STRONG EARTHQUAKE SHAKES RYUKYU ISLANDS, JAPAN

 

EARTHQUAKE SUMMARY FOR APRIL 15, 2024

 

The strongest earthquake in the world today was an M 5.9 in the Ryukyu Islands of Japan. NEIC reported it was felt with intensity up to IV in Koshima, Japan. It is the strongest in the northern Ryukyu Islands within about 200 km of this epicenter since an M 6.1 on December 9, 2021. At the time this summary noted:

 

"The strongest earthquake in the world today was an M 6.0 in the northern Ryukyu Islands, Japan. NEIC reported maximum shaking with this event of VI in Nago, Okinawa with IV in Naha, Okinawa and in Kagoshima at Naze, Nishinoomote and lesser shaking in Ibusuki and Kanoya, Kagoshima and in Hirara, Okinawa, Japan. The last earthquake of M>=6 within about 150 km of this epicenter in the Ryukyu Islands was an M 6.7 on November 13, 2015. An M 6.6 and an M 6.1 about 150 km to the west of this occurred at intermediate depths on June 13, 2020 and July 13, 2019 but because of their depths are not considered possible foreshocks." (December 9, 2021)

 

It is likely this event was related to the M 7.4 on April 2, 2024 in Taiwan at the southern end of the Ryukyu  chain. It seems likely that this series will continue in the next several days and may contain a further strong quake near Kyushu or Shikoku, Japan.

 

Forecast 162118 had expected today's event within about 100 km was likely around April 13, 2024.

 

O: 15APR2024 22:38:57  29.5N  131.7E MW=5.9  ANSS   SE OF KOSHIMA JAPAN          

P: 13APR2024 162118    29.0N  131.0E 4.0-5.5 AAAAA  Kyushu Japan               

 

The strongest earthquake in the U.S. or Canada today was an M 4.6 in the Near Islands, Alaska. NEIC reported it was felt with intensity up to III in Attu Station, Alaska. The last earthquake of M>=4.6 in the Near Islands occurred about 150 km northwest of today's epicenter on December 25, 2023. At the time this summary noted:

 

 

"Among the strongest earthquakes in the world today were a pair in the Aleutians of Alaska of M 4.6 and M 4.7. The strongest earthquake recorded in the U.S. or Canada today was an M 4.7 in the far western Near Islands, Aleutians. It was not reported felt in this westernmost area of the U.S. Aleutian Islands. The last earthquake of larger size in the Near Islands occurred  as an M 4.8 exactly one year ago on December 25, 2022 and again as an M 4.8 on May 20, 2023. At the time this summary noted:

 

 

"The strongest unfelt earthquake in the U.S. today was an M 4.8 in the Near Islands, Aleutians, Alaska. This is the largest earthquake in the Near Islands since an M 4.8 on December 25, 2022. The last earthquake of larger magnitude in this area was an M 5.2 more than a year ago on March 1, 2022. The strongest earthquake within about 300 km of today's event in the Near Islands in the past three years was an M 5.7 on December 29, 2021. 2022. Forecast 153273 had expected this earthquake in the Near Islands was likely around May 17, 2023." (May 20, 2023, December 25, 2023)

 

Forecast 162239 had expected today's event in this area in the Near Islands was likely around April 16.

 

O: 15APR2024 18:17:02  52.6N  172.8E MB=4.6  ANSS   ATTU STATION ALASKA          

P: 16APR2024 162239    53.0N  171.0E 4.0-5.7 AAAAA  Near Islands               

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 16APR2024 04:02:38  36.7N   54.8E ML=4.0  EMSC   NORTHERN IRAN                

P: 17APR2024 162156    36.0N   51.0E 3.8-5.2 AACAA  No. Iran                   

 

No significant (M>=5) or unusual earthquakes were reported in Asia today.

 

INDONESIA AND PHILIPPINES

 

O: 15APR2024 11:11:41   5.5N  123.9E MB=4.2  ANSS   SW OF MALISBENG PHILIPPINES  

P: 19APR2024 162058     4.0N  125.0E 4.0-5.6 BBAAA  Mindanao, Philippines      

 

O: 15APR2024 15:42:26   6.3S  150.4E MB=4.5  ANSS   KIMBE PAPUA NEW GUINEA       

O: 15APR2024 15:42:28   6.4S  150.5E mb=4.5  EMSC   NEW BRITAIN REGION, P.N.G.

P: 15APR2024 162070     5.0S  152.0E 4.0-5.5 ABBAA  New Britain                

 

O: 15APR2024 13:14:37   3.7S  142.0E ML=4.0  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 11APR2024 162077     3.0S  141.0E 4.0-5.5 BAAAA  Papua New Guinea            

 

O: 15APR2024 10:43:29   5.2S  151.9E MW=5.4  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 15APR2024 162070     5.0S  152.0E 4.0-5.5 AAAAA  New Britain                

 

O: 15APR2024 11:11:42   5.4N  124.0E MB=4.2  EMSC   CELEBES SEA                   

P: 19APR2024 162058     4.0N  125.0E 4.0-5.6 BBAAA  Mindanao, Philippines      

 

O: 16APR2024 03:07:17   7.0S  125.0E MB=4.8  EMSC   BANDA SEA                    

P: 12APR2024 162062     6.0S  125.0E 4.0-5.4 BAAAA  Banda Sea                  

 

BMG  reported this earthquake of M 5.0 in the Banda Sea  was felt with intensity up to III in the area(s) of   the Banda Sea in Kab. Alor and Maluku Barat Daya. 

 

O: 16APR2024 03:18:21   7.3S  105.9E MB=4.8  EMSC   JAVA, INDONESIA              

P: 14APR2024 162079     9.0S  106.0E 4.0-5.5 ABAAA  So. of Java                

 

O: 15APR2024 08:31:03   7.3S  129.3E ML=4.4  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 10APR2024 161795     7.0S  127.0E 4.0-5.4 BACAA  Banda Sea                  

 

O: 15APR2024 08:17:34   8.1N  127.1E ML=4.1  EMSC   PHILIPPINE ISLANDS REGION    

O: 16APR2024 00:53:42   9.9N  126.3E ML=4.1  EMSC   MINDANAO, PHILIPPINES

P: 11APR2024 162056     9.0N  127.0E 4.0-5.4 BAAAA  Halmahera                  

P: 14APR2024 162097    10.0N  127.0E 3.5-5.0 ABAAA  Luzon, Philippines         

 

 

CENTRAL AND SOUTH AMERICA

 

O: 15APR2024 07:09:39  15.1N   96.4W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 17APR2024 162105    16.0N   97.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 15APR2024 14:08:32  14.2N   92.4W ML=4.2  EMSC   OFFSHORE GUATEMALA

O: 16APR2024 02:36:31  15.3N   92.0W ML=4.1  EMSC   GUATEMALA                    

P: 17APR2024 162094    14.0N   92.0W 3.5-5.4 ABAAA  Guatemala                  

 

O: 15APR2024 12:48:29  16.9N   94.0W ML=4.0  EMSC   OAXACA, MEXICO               

P: 15APR2024 162105    17.0N   96.0W 3.5-5.6 AABAA  Oaxaca, Mexico             

 

O: 16APR2024 05:38:12  18.6S   70.6W ML=4.0  EMSC   OFFSHORE TARAPACA, CHILE     

P: 16APR2024 162289    20.0S   70.0W 4.0-5.4 ABAAA  So. Peru/Bolivia           

 

GUC  reported this earthquake of M 4.0 in Arica, Chile was felt with intensity up to III in the area(s) of  Arica, Chile.

 

O: 15APR2024 07:02:03  18.9N   64.7W MD=3.7  EMSC   VIRGIN ISLANDS REGION        

O: 15APR2024 12:59:21  19.1N   64.7W MD=3.8  EMSC   VIRGIN ISLANDS REGION

P: 14APR2024 162096    19.0N   64.0W 3.0-5.1 AAAAA  Leeward Islands            

 

O: 15APR2024 11:36:02  19.8N   70.4W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P: 15APR2024 162111    20.0N   71.0W 3.0-4.8 AAAAA  Bahamas/No. Caribbean      

 

AFRICA AND EUROPE

 

O: 15APR2024 14:08:32  63.4N   24.1W ML=3.0  EMSC   ICELAND REGION               

P: 17APR2024 162259    63.0N   23.0W 3.0-4.6 AAAAA  Iceland area               

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.

 

OCEAN RIDGES

 

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

 

 

ZEALANDIA AND AUSTRALIA REGION

 

EMSC reported this earthquake of M 2.7 in Southeastern Australia was felt with intensity up to III in the area(s) of  Southeastern Australia in Mount Barker and Strathalbyn with a thundering earthquake noise.

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today.

 

JAPAN AND KURIL ISLANDS

 

O: 15APR2024 22:38:57  29.5N  131.7E MW=5.9  ANSS   SE OF KOSHIMA JAPAN          

P: 13APR2024 162118    29.0N  131.0E 4.0-5.5 AAAAA  Kyushu Japan               

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 16APR2024 03:08:41  40.4N  124.8W MD=3.0  EMSC   OFFSHORE NORTHERN CALIFORNIA

O: 15APR2024 08:55:36  40.4N  125.1W ML=3.0  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 14APR2024 162212    40.5N  125.8W 2.5-4.8 AAAAA  Off Coast of No. Calif     

 

NEIC reported these earthquakes of M 3.0 off the coast of Northern California  were felt with intensity up to III in the area(s) of  Northern California in Petrolia.

 

ALASKA

 

O: 15APR2024 09:32:41  54.9N  160.3W ML=3.3  EMSC   ALASKA PENINSULA             

P: 15APR2024 162249    54.3N  161.4W 3.5-4.9 AAAAA  Unimak Islands, Aleutians  

 

NEIC reported this earthquake of M 3.6 in Unimak, Alaska was felt with intensity up to III in the area(s) of  Unimak, Alaska in Sand Point.

 

O: 15APR2024 18:17:02  52.6N  172.8E MB=4.6  ANSS   ATTU STATION ALASKA          

P: 16APR2024 162239    53.0N  171.0E 4.0-5.7 AAAAA  Near Islands               

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 15APR2024 10:29:06  52.6N  132.1W MB=3.1  ECAN OF QUEEN CHARLOTTE, BC  

O: 15APR2024 10:29:06  52.6N  132.1W ML=3.1  EMSC   QUEEN CHARLOTTE ISLANDS REGION

P: 12APR2024 162234    53.0N  132.0W 3.0-5.1 BAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 16APR2024 03:58:26  31.6N  104.5W ML=2.2  EMSC   WESTERN TEXAS

O: 16APR2024 05:53:52  31.6N  104.5W ML=2.0  EMSC   WESTERN TEXAS

O: 16APR2024 06:31:52  31.6N  104.6W ML=2.6  EMSC   WESTERN TEXAS

O: 16APR2024 06:33:18  31.6N  104.5W ML=3.1  EMSC   WESTERN TEXAS

O: 16APR2024 06:52:40  31.6N  104.5W ML=2.2  EMSC   WESTERN TEXAS

O: 15APR2024 12:36:04  31.7N  104.4W ML=2.5  EMSC   WESTERN TEXAS

O: 15APR2024 12:54:04  31.6N  104.4W ML=2.1  EMSC   WESTERN TEXAS                

P: 15APR2024 162163    31.2N  104.1W 2.0-3.9 AAAAA  SW U.S.A                   

 

NEIC reported this earthquake of M 2.9 in Western Texas was felt with intensity up to III in the area(s) of  Western Texas in Whites City, New Mexico.

 

EASTERN U.S./CANADA

 

O: 16APR2024 00:46:26  29.1N   97.8W ML=1.7  ANSS   SSW OF NIXON TEXAS           

O: 15APR2024 21:57:25  29.1N   97.8W ML=2.6  ANSS   FALLS CITY TEXAS             

P: 14APR2024 162122    28.0N   98.0W 3.0-4.4 AAAAA  Northern Mexico            

 

O: 15APR2024 13:58:52  40.7N   74.7W ML=1.0  ANSS   CALIFON NEW JERSEY           

O: 15APR2024 10:50:37  40.7N   74.8W ML=1.2  ANSS   CALIFON NEW JERSEY           

P: 13APR2024 162206    40.0N   74.0W 2.0-4.3 AAAAA  New England                

 

HAWAII

 

 

O: 15APR2024 16:31:26  19.2N  155.5W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P: 15APR2024 162095    19.3N  155.1W 3.0-4.4 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.2 in Hawaii was felt with intensity up to III in the area(s) of  Hawaii in Pahala.

 

 

STRONG EARTHQUAKE SHAKES NEW BRITAIN, PAPUA NEW GUINEA

 

EARTHQUAKE SUMMARY FOR APRIL 14, 2024

 

The strongest earthquake in the world today was an M 6.5 in Papua New Guinea. NEIC reported it was felt with intensity up to VI in Kimbe, New Guinea. The last earthquake within about 250 km of this epicenter in New Guinea with M>=6.5 occurred on May 14, 2019. At the time this summary noted:

 

"The strongest earthquake in the world today was an M 7.5-7.7 in the New Britain

region of Papua New Guinea. NEIC reported it was felt with maximum intensity VII

in Rabaul, New Britain and VI in Kokopo; V in Namatanai, New Ireland; IV in Arawa, Solomon Islands and II-III in Kavleng, New Ireland and within about 500 km of the epicenter. It was also reported felt with moderate to strong intensity in Port Vila, Lihir Island, Bougainville, Port Moresby with power blackouts in the Kokopo area. PTWC issued a tsunami warning but this was later withdrawn. Villagers near the epicenter on the west coast of New Ireland reported seeing the ocean recede but no damaging waves were recorded. Damage did occur in New Britain but immediate reports are unclear as to how great it was. … this earthquake was simultaneous with the strongest geomagnetic storm since August 26, 2018 when AP reached 76." (May 14, 2019)

 

The last earthquake in New Britain with M>=6.5 within about 200 km of today's epicenter occurred on October 10, 2018 with M 7.0.

 

Forecast 162070 had expected today's event within this area was likely around

April 15, 2024.

 

O: 14APR2024 20:56:28   5.8S  151.0E MW=6.5  EMSC   NEW BRITAIN REGION, P.N.G.   

O: 14APR2024 20:56:28   5.8S  151.1E MW=6.5  ANSS   KIMBE PAPUA NEW GUINEA       

P: 15APR2024 162070     5.0S  152.0E 4.0-5.5 AAAAA  New Britain                

 

Light earthquakes continued along the path of total eclipse of the sun of April 8 today. These occurred in Quebec, Nova Scotia, Maine and New Brunswick as well as in Tennessee and Missouri. Following is a listing of these minor earthquakes along the total eclipse path today. This continues the extensive series of such earthquakes which have occurred since the eclipse and has been documented in previous issues of this summary.

 

O: 14APR2024 05:02:29  45.7N   67.6W MB=1.7  ECAN OF MCADAM, NB                  

P: 18APR2024 162199    47.0N   69.0W 2.0-4.1 BBAAA  Maine                      

 

O: 13APR2024 23:13:16  45.7N   59.4W MB=3.0  ECAN OF LOUISBOURG, NS              

 

O: 13APR2024 10:13:56  46.6N   76.1W MB=1.5  ECAN OF GRAND-REMOUS, QC            

P: 13APR2024 162207    46.0N   74.0W 2.0-4.1 AABAA  New York State             

 

O: 12APR2024 16:56:03  47.1N   71.1W MB=1.9  ECAN OF SAINTE-BRIGITTE-DE-LAVAL, QC

P: 14APR2024 162206    47.3N   70.5W 2.0-4.0 AAAAA  New England                

 

O: 15APR2024 02:57:33  36.1N   89.4W md=1.6  ANSS   NNW of Dyersburg Tennessee

O: 14APR2024 22:28:46  36.6N   89.6W MD=1.3  ANSS   NORTH LILBOURN MISSOURI      

P: 15APR2024 162152    36.3N   89.5W 2.0-4.1 AAAAA  New Madrid area            

 

The strongest earthquake in the U.S. or Canada today was an M 3.9 in the Near Islands, Aleutians, Alaska. It was not reported felt in this remote area. The last earthquake in the Near Islands of larger magnitude than M  3.9 occurred as an M 4.7 on December 25, 2023. At the time this summary noted:

 

 

"Among the strongest earthquakes in the world today were a pair in the Aleutians of Alaska of M 4.6 and M 4.7. The strongest earthquake recorded in the U.S. or Canada today was an M 4.7 in the far western Near Islands, Aleutians. It was not reported felt in this westernmost area of the U.S. Aleutian Islands. The last earthquake of larger size in the Near Islands occurred  as an M 4.8 exactly one year ago on December 25, 2022 and again as an M 4.8 on May 20, 2023." (December 25, 2023)

 

Forecast 162239 had expected this event within about 25 km was likely around

April 16.

 

O: 14APR2024 08:41:14  52.8N  171.3E MB=3.9  EMSC   NEAR ISLANDS, ALEUTIAN ISLANDS

P: 16APR2024 162239    53.0N  171.0E 4.0-5.7 AAAAA  Near Islands               

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 14APR2024 14:37:51  24.3N  122.0E ML=4.1  EMSC   TAIWAN

O: 14APR2024 23:10:23  24.3N  121.8E ML=4.0  EMSC   TAIWAN

O: 14APR2024 16:15:06  24.2N  121.7E ML=4.2  EMSC   TAIWAN                       

P: 13APR2024 162126    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                      

 

O: 14APR2024 18:16:27  37.8N  101.2E MB=4.9  EMSC   NORTHERN QINGHAI, CHINA      

P: 19APR2024 162175    35.0N   99.0E 3.5-5.0 BCBAA  So. China                  

 

O: 14APR2024 13:51:00  41.2N   78.6E MB=4.6  EMSC   SOUTHERN XINJIANG, CHINA     

P: 16APR2024 162198    41.0N   78.0E 4.0-5.8 AAAAA  Kirgizstan/Xinjiang        

 

NEIC reported this earthquake of M 4.8 in Xinjiang, China was felt with intensity up to III in the area(s) of  Xinjiang, China in Kazakhstan at Almaty, Zhetigen auyldyq okrug, and in Bishkek, Kyrgyzstan.

 

INDONESIA AND PHILIPPINES

 

O: 14APR2024 15:06:56   0.5N  126.7E ML=4.1  EMSC   MOLUCCA SEA                  

P: 16APR2024 162058     3.0N  126.0E 4.0-5.5 ACAAA  Mindanao, Philippines      

 

O: 14APR2024 08:57:36   3.0N   97.4E ML=4.3  EMSC   NORTHERN SUMATRA, INDONESIA  

O: 15APR2024 00:08:26   3.2N   96.6E ML=4.0  EMSC   NORTHERN SUMATRA, INDONESIA

P: 17APR2024 162059     2.0N   95.0E 4.0-5.5 BABAA  Nicobar Islands            

 

O: 14APR2024 20:56:28   5.8S  151.0E MW=6.5  EMSC   NEW BRITAIN REGION, P.N.G.   

O: 14APR2024 20:56:28   5.8S  151.1E MW=6.5  ANSS   KIMBE PAPUA NEW GUINEA       

P: 15APR2024 162070     5.0S  152.0E 4.0-5.5 AAAAA  New Britain                

 

O: 14APR2024 12:37:25   7.5N  126.2E ML=4.3  EMSC   MINDANAO, PHILIPPINES        

O: 14APR2024 14:05:51   7.6N  126.2E ML=4.1  EMSC   MINDANAO, PHILIPPINES

P: 11APR2024 162056     8.0N  125.0E 4.0-5.4 BAAAA  Central Philippines        

P: 11APR2024 162056     9.0N  127.0E 4.0-5.4 BBAAA  Halmahera                   

 

O: 14APR2024 11:24:14  11.9N  125.8E MB=4.7  EMSC   SAMAR, PHILIPPINES           

P: 15APR2024 162097    13.0N  126.0E 3.5-5.1 ABAAA  Luzon, Philippines         

 

O: 14APR2024 17:39:18  21.2N  146.0E MB=4.9  EMSC   MARIANA ISLANDS REGION        

P: 14APR2024 162127    21.0N  146.0E 4.0-5.6 AAAAA  Volcano Islands            

 

CENTRAL AND SOUTH AMERICA

 

O: 14APR2024 10:58:42   1.6S   80.9W MB=4.6  EMSC   NEAR COAST OF ECUADOR        

P:  6APR2024 161799     1.0S   81.0W 4.0-5.4 CAAAA  Ecuador                    

 

NEIC reported this earthquake of M 4.6 in Ecuador was felt with intensity up to III in the area(s) of  Ecuador in Jipijapa.

EMSC reported strong shaking in Ecuador at Salango, Santa Elena.

 

O: 14APR2024 13:56:47  12.2S   77.4W ML=4.8  EMSC   NEAR COAST OF CENTRAL PERU   

P:  8APR2024 162003    13.0S   77.0W 4.0-5.6 CAAAA  Central Peru               

 

NEIC reported this earthquake of M 4.6 in Peru was felt with intensity up to III in the area(s) of  Peru in Lima, Miraflores, Chorrillos, San Juan de Miraflores, Santiago de Surco.

 

O: 14APR2024 19:14:59  14.0N   91.2W MB=4.8  EMSC   GUATEMALA                    

P: 12APR2024 162094    15.0N   92.0W 3.5-5.3 AAAAA  Guatemala                  

P: 17APR2024 162094    14.0N   92.0W 3.5-5.4 BAAAA  Guatemala                  

 

NEIC reported this earthquake of M 4.8 in Guatemala was felt with intensity up to IV in the area(s) of  Guatemala in Gomera.

EMSC reported moderate shaking in Guatemala at Aldea Santo Tomas Milpas Altas, Condominio Cristalinas, Mixco, Colonia El Amparo.

 

O: 15APR2024 06:18:47  14.2N   94.1W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 16APR2024 162090    15.0N   94.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

 

O: 14APR2024 23:29:06  11.1N   87.0W MB=4.7  EMSC   NEAR COAST OF NICARAGUA      

P: 17APR2024 162101    11.0N   86.0W 3.5-5.5 BAAAA  Nicaragua                  

 

O: 14APR2024 14:05:53   6.4S   80.3W ML=4.2  EMSC   NEAR COAST OF NORTHERN PERU  

P: 20APR2024 162075     6.0S   76.0W 4.0-5.8 CACAA  No. Peru                   

 

O: 14APR2024 08:08:53  16.6N   93.1W ML=4.0  EMSC   CHIAPAS, MEXICO              

P: 16APR2024 162090    15.0N   94.0W 3.5-5.5 ABAAA  Chiapas, Mexico            

 

O: 14APR2024 19:58:26  19.2N   65.1W MD=3.7  EMSC   VIRGIN ISLANDS REGION        

O: 14APR2024 19:43:20  19.3N   65.1W MD=3.6  EMSC   VIRGIN ISLANDS REGION

P: 17APR2024 162110    20.0N   65.0W 3.0-4.6 BAAAA  Bahamas/No. Caribbean      

 

O: 14APR2024 20:50:43  19.6N   71.4W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 15APR2024 162111    20.0N   71.0W 3.0-4.8 AAAAA  Bahamas/No. Caribbean      

 

AFRICA AND EUROPE

 

O: 15APR2024 06:06:29  34.4N   26.2E ML=4.4  EMSC   CRETE, GREECE                

P: 19APR2024 162142    34.0N   27.0E 3.0-4.4 BAAAA  Crete                       

 

O: 14APR2024 07:44:24  40.8N   14.1E MD=3.7  EMSC   SOUTHERN ITALY               

P: 16APR2024 162195    42.0N   15.0E 3.0-5.0 ABAAA  Italy                      

 

NEIC reported this earthquake of M 2.7 in Italy was felt with intensity up to III in the area(s) of  Italy in Bacoli.

EMSC reported this earthquake of M 3.7  in Southern Italy was felt with intensity up to III in the area(s) of  Southern Italy in Pozzuoli, Napoli, Quarto. 

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

O: 14APR2024 09:47:50  18.4S  175.5W MB=4.9  EMSC   TONGA                        

P:  9APR2024 162028    20.0S  175.0W 4.0-5.6 BBAAA  Tonga Islands              

P: 12APR2024 162275    19.0S  173.0W 4.0-5.6 AACAA  Tonga Islands              

 

O: 14APR2024 10:15:19  19.2S  177.7W MB=4.5  EMSC   FIJI REGION                  

P: 17APR2024 162276    19.0S  178.0W 4.0-5.4 BAAAA  Tonga Islands              

 

No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.

 

OCEAN RIDGES

 

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

 

 

ZEALANDIA AND AUSTRALIA REGION

 

 

O: 14APR2024 22:00:33  37.2S  146.7E ML=2.8  EMSC   NEAR S.E. COAST OF AUSTRALIA 

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today.

 

JAPAN AND KURIL ISLANDS

 

O: 14APR2024 16:06:12  42.1N  142.7E ML=4.1  EMSC   HOKKAIDO, JAPAN REGION       

P: 17APR2024 162194    41.0N  143.0E 3.5-5.4 BBAAA  Hokkaido, Japan             

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 14APR2024 12:13:56  32.2N  116.6W ML=2.6  EMSC   BAJA CALIFORNIA, MEXICO      

P: 13APR2024 162168    32.6N  116.1W 2.5-4.8 AAAAA  So. California             

 

O: 14APR2024 07:21:27  32.4N  115.2W ML=2.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 15APR2024 162168    32.4N  115.8W 2.5-4.8 AAAAA  So. California             

 

O: 14APR2024 17:46:41  34.1N  119.1W ML=2.0  EMSC   GREATER LOS ANGELES AREA, CALI

P: 19APR2024 162172    34.9N  119.0W 2.5-4.4 BAAAA  So. California             

 

O: 14APR2024 14:53:10  34.9N  118.9W ML=2.0  EMSC   CENTRAL CALIFORNIA           

P: 14APR2024 162173    35.4N  118.5W 2.5-4.8 AAAAA  So. California             

 

O: 14APR2024 13:50:52  36.3N  118.3W ML=2.1  EMSC   CENTRAL CALIFORNIA

O: 14APR2024 10:08:57  36.3N  118.3W ML=2.4  EMSC   CENTRAL CALIFORNIA           

P: 13APR2024 162174    35.8N  117.6W 2.5-4.5 AAAAA  So. California             

P: 14APR2024 162173    35.4N  118.5W 2.5-4.8 AAAAA  So. California              

 

O: 14APR2024 19:57:02  37.5N  121.2W MD=2.9  EMSC   NORTHERN CALIFORNIA          

P: 13APR2024 162137    37.4N  121.8W 2.5-4.6 AAAAA  Central California         

 

O: 14APR2024 09:50:40  38.8N  122.8W MD=2.2  EMSC   NORTHERN CALIFORNIA           

P: 14APR2024 162138    38.7N  122.7W 2.5-4.6 AAAAA  Central California         

 

ALASKA

 

O: 14APR2024 13:07:22  51.4N  178.8E ML=3.5  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 12APR2024 162244    51.0N  179.0E 4.0-5.7 AAAAA  Rat Islands                 

 

O: 14APR2024 08:41:14  52.8N  171.3E MB=3.9  EMSC   NEAR ISLANDS, ALEUTIAN ISLANDS

P: 16APR2024 162239    53.0N  171.0E 4.0-5.7 AAAAA  Near Islands               

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 15APR2024 10:29:06  52.6N  132.1W MB=3.1  ECAN OF QUEEN CHARLOTTE, BC         

P: 12APR2024 162234    53.0N  132.0W 3.0-5.1 BAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 14APR2024 17:06:06  31.4N  103.5W ML=2.1  EMSC   WESTERN TEXAS

O: 15APR2024 01:23:46  31.6N  104.5W ML=3.4  EMSC   WESTERN TEXAS

O: 15APR2024 02:45:57  31.6N  104.5W ML=2.0  EMSC   WESTERN TEXAS

O: 15APR2024 03:27:33  31.6N  104.5W ML=2.4  EMSC   WESTERN TEXAS

O: 14APR2024 07:48:52  31.7N  104.1W ML=2.0  EMSC   WESTERN TEXAS                

P: 15APR2024 162163    31.2N  104.1W 2.0-3.9 AAAAA  SW U.S.A                   

 

NEIC reported this earthquake of M 3.3 in Western Texas was felt with intensity up to IV in the area(s) of  Western Texas in Whites City, New Mexico.

 

O: 14APR2024 20:59:18  32.9N  100.9W ML=2.8  EMSC   WESTERN TEXAS                

P: 11APR2024 162163    32.2N  101.1W 2.0-3.9 BAAAA  SW U.S.A                   

 

O: 15APR2024 03:22:08  39.4N  111.9W ML=2.3  EMSC   UTAH                         

P: 16APR2024 162184    39.7N  111.9W 2.0-3.9 AAAAA  Utah area                  

 

EASTERN U.S./CANADA

 

O: 14APR2024 06:40:04  46.7N   82.3W MB=2.5  ECAN OF ELLIOT LAKE, ON  

O: 14APR2024 08:48:09  46.7N   82.2W MB=2.4  ECAN OF SPANISH RIVER CARBONITE MINE,

P: 13APR2024 162215    46.0N   81.0W 2.0-4.1 AAAAA  Ohio/Lake Erie             

 

O: 14APR2024 05:02:29  45.7N   67.6W MB=1.7  ECAN OF MCADAM, NB                  

P: 18APR2024 162199    47.0N   69.0W 2.0-4.1 BBAAA  Maine                      

 

O: 13APR2024 23:13:16  45.7N   59.4W MB=3.0  ECAN OF LOUISBOURG, NS              

 

O: 13APR2024 15:47:37  71.9N   74.9W MB=2.2  ECAN OF POND INLET, NU              

O: 13APR2024 06:26:14  73.4N   74.8W MB=1.9  ECAN OF POND INLET, NU  

P:  9APR2024 161997    71.0N   75.0W 2.5-4.0 BAAAA  Baffin/Davis Strait Canada 

 

O: 13APR2024 10:13:56  46.6N   76.1W MB=1.5  ECAN OF GRAND-REMOUS, QC            

P: 13APR2024 162207    46.0N   74.0W 2.0-4.1 AABAA  New York State             

 

O: 13APR2024 09:35:30  47.9N   71.5W MB=2.6  ECAN OF CHICOUTIMI - JONQUI├¿RE, QC 

O: 12APR2024 16:56:03  47.1N   71.1W MB=1.9  ECAN OF SAINTE-BRIGITTE-DE-LAVAL, QC

P: 14APR2024 162206    47.3N   70.5W 2.0-4.0 AAAAA  New England                

 

O: 15APR2024 06:29:43  40.7N   74.8W ml=0.9  ANSS   Califon New Jersey

O: 15APR2024 05:17:24  40.7N   74.8W ml=1.3  ANSS   Califon New Jersey

O: 15APR2024 05:02:17  40.7N   74.8W ml=1.1  ANSS   Califon New Jersey

O: 15APR2024 03:01:28  40.7N   74.8W ml=1.0  ANSS   Lebanon New Jersey

P: 13APR2024 162206    40.0N   74.0W 2.0-4.3 AAAAA  New England                

 

O: 14APR2024 07:15:59  35.4N   84.4W MD=1.8  ANSS   E OF ENGLEWOOD TENNESSEE     

P: 13APR2024 162178    34.0N   85.0W 2.0-4.5 ABAAA  Southeast U.S.              

 

O: 15APR2024 02:57:33  36.1N   89.4W md=1.6  ANSS   NNW of Dyersburg Tennessee

O: 14APR2024 22:28:46  36.6N   89.6W MD=1.3  ANSS   NORTH LILBOURN MISSOURI      

P: 15APR2024 162152    36.3N   89.5W 2.0-4.1 AAAAA  New Madrid area             

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

MINOR QUAKES IN LOUISIANA; MISSOURI; MAINE UNDER TOTAL SOLAR ECLIPSE PATH

 

EARTHQUAKE SUMMARY FOR APRIL 13, 2024

 

ECLIPSE-RELATED SEISMICITY

 

Several earthquakes occurred today along the path of total eclipse of the sun. The most unusual of these was an M 2.6 in Louisiana near the border with Texas. NEIC reported it was felt with light intensity II in Edgefield, Louisiana. An M 3.5 hit near this epicenter on January 27, 2024 and this may be an aftershock of that event. At the time this summary noted:

 

"An unusual earthquake of M 3.5 occurred today in Louisiana. NEIC reported it was widely felt with intensity up to V in Louisiana at Hall Summit. An M 2.5 foreshock was felt in the same area today. Light earthquakes occurred in this area of Louisiana in April an December, 2021 and in November, 2022 but none of these were larger than M 3.0. The last event in Louisiana within about 100 km of today's epicenter occurred more that 35 years ago. An M 4.3 about 150 km to the southwest of this epicenter occurred on September 2, 2013." (January 27, 2024)

 

The total eclipse was observed near this epicenter at 18:47 UT on April 8. 

 

Forecast 162179 had expected this activity in Louisiana was likely within  about 100 km around April 17. This epicenter is at 103 degrees from the M 6.9 in the Mariana Is of April 5, 2024 and the M 6.7 in the Loyalty Islands of March 27, 2024 and may have been promoted by energy from those sources.

 

 

O: 13APR2024 20:50:48  32.1N   93.4W ML=2.6  EMSC   LOUISIANA                    

O: 13APR2024 20:50:48  32.1N   93.4W mb=2.6  ANSS   NW of Edgefield Louisiana

P: 17APR2024 162179    34.0N   94.0W 2.0-3.9 BBAAA  Southeast U.S.             

 

Another minor earthquake on the path of total eclipse of April 8 occurred today in southeastern Missouri. It was reported by NEIC to have been lightly felt in Missouri at Williamsville. The total solar eclipse was visible at this epicenter at 18:59 for 4 minutes 11 seconds. This is the strongest earthquake within about 50 km of this epicenter since an M 2.7 on February 20, 2024 and an M 2.4 on July 28, 2023.

 

Forecasts 162152 and 161880 had expected enhanced seismicity in this region was likely with the eclipse around April 9-15.

 

O: 13APR2024 19:31:44  36.9N   90.4W MD=2.2  EMSC   SOUTHEASTERN MISSOURI         

O: 13APR2024 19:31:44  36.9N   90.4W md=2.3  ANSS   ESE of Williamsville Missouri

P:  9APR2024 161880    36.7N   89.7W 2.0-3.9 BAAAA  New Madrid area            

P: 13APR2024 162152    37.0N   89.0W 2.0-4.0 AAAAA  New Madrid area            

P: 15APR2024 162152    36.3N   89.5W 2.0-4.1 AAAAA  New Madrid area            

 

An earthquake of M 1.5 was also reported today in Vanceboro, Maine. This epicenter at 46N 67W saw the total eclipse at 19:34 UT. Today's event occurred near local solar midnight and was probably promoted by tidal stresses with the eclipse.  This is the first earthquake recorded within Maine by NEIC since an M 2.5 about 250 km southwest of this on August 8, 2023. The strongest earthquake in Maine in the past 3.5 years occurred with M 3.3 in southern Maine on January 14, 2023. At the time this summary noted:

 

"A series of light earthquakes were felt in southern Maine near Augusta today. The largest of these was an M 3.3 which NEIC reported was felt with maximum intensity IV in Holden, Orland, Orrington and II-III in Bucksport, Ellsworth, Eddington, Brewer, Penobscot, Orono and Winterport and as far as Bethel and Portland, Maine.  This activity began with an M 2.2 at 12:17 UT on January 13 but a series of aftershocks were widely felt near local solar midnight on January 14, 2023. Solar flare 9950  occurred simultaneously with these events  on January 14 and SFE from this flare may have helped trigger these events. The M 3.3 is the strongest earthquake in Maine within about 100 km of these epicenters since an M 3.8 on October 3, 2006 – the strongest event in this area in at least 30 years (a similar M 3.8 hit the area on February 26, 1999 about 125 km to the southwest of today's epicenter)." (January 14, 2023)

 

Forecast 161927 and 162199 had expected enhanced seismicity in this area of Maine was likely with the eclipse.

 

O: 14APR2024 05:02:29  45.6N   67.6W MB=1.5  ANSS   NW OF VANCEBORO, MAINE       

P:  8APR2024 161927    47.0N   69.0W 2.0-4.1 CBAAA  Maine                      

P: 18APR2024 162199    47.0N   69.0W 2.0-4.1 BBAAA  Maine                      

 

The strongest earthquake in the U.S. or Canada today was an M 4.4 WNW of Fort St. John, British Columbia, Canada. It may have been felt lightly in the epicentral area. The last earthquake within about 200 km of this epicenter with equal or greater magnitude to M 4.4 occurred on August 17, 2015. Other events in the past 35 years in this area occurred as an M 5.3 about 200 km to the east on April 14, 2001 and as an M 5.0 on December 26, 1992 about 100 km to the southeast of today's epicenter.

 

Forecast 161962 had expected today's earthquake was likely in this area in  early April, 2024.

 

O: 13APR2024 11:21:47  56.8N  121.8W MB=4.4  ECAN WNW OF FORT ST. JOHN, BC

O: 13APR2024 11:21:48  56.8N  121.6W mb=4.1  ANSS   Fort St. John Canada

O: 13APR2024 11:21:48  56.8N  121.6W ML=4.4  EMSC   BRITISH COLUMBIA, CANADA     

P:  5APR2024 161962    56.0N  120.0W 2.0-4.1 CABAA  Alberta                    

 

A series of moderate earthquakes also occurred today under the world's oceans. Among these were an  5.3 in the Central Mid-Atlantic; an M 5.0 in the Southeast Indian Ridge; an M 5.1 in the Western Indian-Antarctic Ridge and an M 4.7 as unusual earthquake also occurred today in the central North Pacific Ocean basin. This earthquake occurred near local solar midnight and may have been promoted by strong tidal stresses which maximize near this hour. This is the strongest earthquake within about 500 km of this epicenter in the North Pacific region in at least 35 years.  It was not forecast in this summary.

 

O: 13APR2024 10:37:54  34.0N  177.0W MB=4.7  EMSC   NORTH PACIFIC OCEAN          

O: 13APR2024 10:37:54  34.0N  177.0W mb=4.7  ANSS   North Pacific Ocean

 

The M 5.0 in the Southeast Indian Ridge was nearly antipodal to Missouri and Illinois, and was antipodal to the path of the solar eclipse of April 8.  It was probably promoted by tidal stresses associated with that eclipse. Today's earthquake occurred near local solar noon when tidal stresses maximize. The last earthquake with equal or greater magnitude within about 300 km of today's epicenter was an M 5.9 on October 14, 2018.

 

Forecast 162306 had expected today's event within about 100 km was likely around April 12.

 

O: 13APR2024 06:53:45  42.1S   88.9E MB=5.0  EMSC   SOUTHEAST INDIAN RIDGE       

P: 12APR2024 162306    42.0S   88.0E 4.0-5.6 AAAAA  So. Indian Ocean           

 

Another moderate oceanic earthquake which was antipodal to the path of totality of the eclipse occurred today south of Australia in the western Indian-Antarctic Ridge with M 5.1. Today's event occurred within minutes of local solar midnight and may have been promoted by tidal stresses which maximize near this hour. This is antipodal to Nova Scotia where the eclipse at 49N 58W was visible at 19:42 UT. It too, was probably promoted by stresses associated with the eclipse. A rare earthquake also occurred on April 16, 2024 near the antipode in Nova Scotia of this event south of Australia. Recent earthquakes within about 300 km of this event south of Australia of M 5.1 occurred in April, 2022, February 2021; December, 2019 and September , 2018 but the last of larger magnitude in this region occurred on April 21, 2018 (M 5.8) and June 3, 2009 (M 5.7).

 

Forecast 162044 had expected this event within about 50 km was likely around April 7 with the solar eclipse.

 

O: 13APR2024 15:17:18  49.1S  121.4E MB=5.1  EMSC   WESTERN INDIAN-ANTARCTIC RIDGE

P:  7APR2024 162044    49.0S  122.0E 4.0-5.8 CAAAA  So. of Australia           

 

The last earthquake in the Central Mid-Atlantic with M>=5.3 within about 250 km of this epicenter occurred on October 14, 2023 (half a year ago) with M 5.3-5.4 but the last earthquake of larger magnitude in the area was an M 5.7 aftershock on September 17, 2020 of an M 6.7 on September 6, 2020.

 

Forecast 162050 had expected today's event within about 50 km was likely around April 12, 2024. This epicenter is antipodal to an M 6.9 in Papua New Guinea of March 23, 2024 and may have been promoted by energy from that source.

 

O: 14APR2024 05:28:47   7.6N   37.2W MW=5.3  EMSC   CENTRAL MID-ATLANTIC RIDGE   

P: 12APR2024 162050     8.0N   37.0W 4.0-5.6 AAAAA  Central Mid-Atlantic Ridg  

 

An earthquake of M 3.4-3.8 occurred in Southern California today and was widely

felt at a festival near Borrego Springs, California. NEIC reported this earthquake of M 3.8 in Southern California was felt with intensity up to IV in the area(s) of  Southern California  at Borrego Springs. EMSC reported moderate shaking in Southern California at Thermal, La Quinta (with earthquake noise), Mountain Center, Indio, Indian Wells, Cathedral City, Palm Springs, Lakeside, San Diego, Oceanside.  The last earthquake within about 100 km of this epicenter with larger magnitude was an M 4.0 about 100 km southeast of this on February 14, 2024 but the last within about 100 km of today's epicenter with larger magnitude was an  M 4.2 on December 31, 2022. At the time this summary noted:

 

"The quake of M 4.2-4.3 in the Borrego Springs area of Southern California today was also felt with maximum intensity IV in Borrego Springs and with II-III in Southern California at Ranchita, Mountain Center, Warner Springs, La Quinta, Palm Desert, Anza, Indian Wells, Indio and Coachella among others. This is the strongest earthquake in Southern California within about 75 km of this epicenter since an M 4.5 on May 10, 2020. An M 5.2 also hit the area on June 10, 2016.

 

... A strong earthquake of M 7.3-7.6 hit the region on June 28, 1992, the strongest in Southern California in decades. A repeat is unlikely but 24 years is enough time to accumulated sufficient regional stress to accommodate another strong regional earthquake." (June 3-4, 10, 2016, January 1, 2023)

 

 

Forecast 162169 had expected today's event within about 25 km was likely around April 12. This epicenter at 104 degrees from the M 7.0 in Xinjiang, China of January 22, 2024 and may have been promoted by energy from that source.

 

O: 13APR2024 16:08:38  33.4N  116.3W ML=3.4  EMSC   SOUTHERN CALIFORNIA          

O: 13APR2024 16:08:38  33.4N  116.3W ML=3.8  ANSS   SOUTHERN CALIFORNIA          

P: 12APR2024 162169    33.4N  116.7W 2.5-4.6 AAAAA  So. California             

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 13APR2024 18:39:26  23.4N  120.2E ML=4.2  EMSC   TAIWAN

O: 13APR2024 12:38:49  23.7N  121.6E mb=4.7  EMSC   TAIWAN

O: 13APR2024 14:26:36  24.0N  121.6E MB=4.7  EMSC   TAIWAN                       

P: 13APR2024 162126    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

 

NEIC reported this earthquake of M 4.7 in Taiwan was felt with intensity up to III in the area(s) of  Taiwan in Hualien City.

 

O: 14APR2024 05:58:34  36.5N   70.3E MB=4.0  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 13APR2024 162144    37.0N   70.0E 3.8-5.4 AAAAA  Hindu Kush/Pakistan        

 

INDONESIA AND PHILIPPINES

 

O: 13APR2024 15:50:16   1.3N  126.2E mb=4.6  EMSC   MOLUCCA SEA

O: 13APR2024 16:40:57   2.2N  126.6E mb=5.3  EMSC   MOLUCCA SEA

O: 13APR2024 17:47:01   2.4N  126.8E MB=4.6  EMSC   MOLUCCA SEA                  

P: 11APR2024 162055     3.0N  126.0E 4.0-5.4 AAAAA  Halmahera                  

 

BMG reported this earthquake of M 5.1 in Talaud, Indonesia was felt with intensity up to III in the area(s) of  Talaud, Indonesia in Stasiun Meteorologi, Martim Klas II Bitung and II in Kab Manado, Bitung, Toraja, Halmahera and Kota Ternate, Indonesia.

 

O: 13APR2024 17:20:00   3.1S  129.1E ML=4.3  EMSC   SERAM, INDONESIA             

O: 13APR2024 23:46:52   2.8S  129.4E ML=4.1  EMSC   SERAM, INDONESIA

P:  8APR2024 161798     3.0S  129.0E 4.0-5.4 BAAAA  Ceram area                  

P: 13APR2024 162086     4.0S  131.0E 4.0-5.4 AABAA  West Irian, PNG            

 

O: 13APR2024 18:34:52   8.6N  126.5E ML=4.3  EMSC   MINDANAO, PHILIPPINES        

P: 11APR2024 162056     9.0N  127.0E 4.0-5.4 AAAAA  Halmahera                  

 

O: 13APR2024 19:32:26  12.0N  125.6E mb=4.5  EMSC   SAMAR, PHILIPPINES

O: 13APR2024 09:10:48  11.9N  125.8E MB=4.7  EMSC   SAMAR, PHILIPPINES           

P: 15APR2024 162097    13.0N  126.0E 3.5-5.1 ABAAA  Luzon, Philippines         

 

O: 14APR2024 05:31:49  19.9N  121.5E MB=4.8  EMSC   BABUYAN ISL REGION, PHILIPPINE

P: 16APR2024 162098    19.0N  122.0E 3.5-5.1 AAAAA  Luzon, Philippines         

 

CENTRAL AND SOUTH AMERICA

 

NEIC reported an earthquake of M 4.2 in Nicaragua was felt with intensity up to III in the area(s) of  Nicaragua at El Rosario.

 

O: 13APR2024 16:21:00  14.4N   92.2W ML=4.3  EMSC   OFFSHORE GUATEMALA           

P: 12APR2024 162094    15.0N   92.0W 3.5-5.3 AAAAA  Guatemala                  

 

O: 13APR2024 10:28:30  15.5N   94.8W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 16APR2024 162090    15.0N   94.0W 3.5-5.5 BAAAA  Chiapas, Mexico            

 

O: 14APR2024 05:37:06  18.2N   67.7W MD=3.4  EMSC   MONA PASSAGE, PUERTO RICO    

P: 13APR2024 162106    18.0N   67.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 14APR2024 05:17:23  18.4S   71.3W ML=4.0  EMSC   OFF COAST OF TARAPACA, CHILE 

P: 14APR2024 162272    18.0S   73.0W 4.0-5.9 AABAA  So. Peru/Bolivia           

 

O: 13APR2024 08:59:35  18.8N   65.5W MD=3.6  EMSC   PUERTO RICO REGION

O: 13APR2024 07:01:11  19.5N   66.0W MD=3.6  EMSC   PUERTO RICO REGION           

P: 17APR2024 162110    20.0N   67.0W 3.0-4.8 BAAAA  Bahamas/No. Caribbean      

 

O: 13APR2024 18:39:14  18.5N   69.2W ML=3.2  EMSC   DOMINICAN REPUBLIC

O: 13APR2024 19:59:47  18.6N   68.4W MD=3.5  EMSC   DOMINICAN REPUBLIC

O: 13APR2024 13:51:27  19.0N   68.7W MD=3.8  EMSC   DOMINICAN REPUBLIC REGION

O: 13APR2024 07:25:52  19.5N   69.8W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P: 15APR2024 162111    20.0N   71.0W 3.0-4.8 AAAAA  Bahamas/No. Caribbean      

 

O: 13APR2024 19:10:06  20.9S   69.0W MB=4.2  EMSC   TARAPACA, CHILE              

P: 12APR2024 162282    21.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

 

O: 14APR2024 03:16:24  23.6S   63.7W ML=4.4  EMSC   SALTA, ARGENTINA             

P: 15APR2024 162280    23.0S   64.0W 4.0-5.6 AAAAA  Argentina                  

 

O: 13APR2024 19:27:31  23.9S   67.5W ML=4.2  EMSC   ANTOFAGASTA, CHILE           

P: 12APR2024 162280    22.0S   67.0W 4.0-5.4 ABAAA  Argentina                  

 

O: 13APR2024 08:54:20  27.6N  111.7W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 15APR2024 162115    28.0N  112.0W 3.5-5.1 AAAAA  Gulf of California         

 

O: 13APR2024 23:01:20  32.5S   71.6W ML=4.8  EMSC   OFFSHORE VALPARAISO, CHILE   

P: 14APR2024 162294    34.0S   71.0W 4.0-5.9 ABAAA  Central Chile              

 

EMSC reported this earthquake of M 4.9 in Valparaiso, Chile was felt with intensity up to III in the area(s) of  Valaraiso, Chile in Concon, Vina del Mar, Valparaiso, Quilpue, Xan Felipe, Cartagena, Macul.

 

AFRICA AND EUROPE

 

O: 13APR2024 16:54:09  39.0N   23.3E Mw=4.2  EMSC   GREECE

O: 14APR2024 02:02:43  39.0N   23.4E MB=4.5  EMSC   GREECE                       

P: 13APR2024 162154    37.0N   22.0E 3.0-4.4 ABAAA  No. Greece                 

P: 17APR2024 162154    39.0N   21.0E 3.0-4.7 BABAA  No. Greece                 

 

NEIC reported this earthquake of M 4.5 in Greece was felt with intensity up to III in the area(s) of  Greece in Mantoudi.

EMSC reported an earthquake noise and moderate shaking in Greece at South Pelion, Promyri, Psarochoma, Skopelos, Makryrrachi, Volos, Vathy, Llion, Chalandri, Vrilissia, Nicaea, Keratsini, Tavros, Glyka Nera, Athens, Pallini, Piraeus, Kallithea, Kalamaki among others.

 

NEIC reported this earthquake of M 4.2 in Greece was felt with intensity up to III in the area(s) of  Greece in Isiaia.

EMSC reported this event with moderate shaking was felt in Greece at Asmini, South Pelion, Agria, Anilio, Volos, Chalkida, Vathy, Kifisia, Petroupoli, Illion, Amarousia, Athens, among others.

 

O: 14APR2024 07:02:50  45.8N   26.8E ML=3.9  EMSC   ROMANIA                      

P: 13APR2024 162220    46.0N   26.0E 3.0-5.2 AAAAA  Romania/NW Turkey          

 

O: 13APR2024 10:02:17  63.9N   22.0W ML=3.3  EMSC   ICELAND REGION               

P: 17APR2024 162259    63.0N   23.0W 3.0-4.6 BAAAA  Iceland area               

 

SOUTHWEST PACIFIC

 

O: 13APR2024 08:48:52  20.3S  177.6W MB=4.9  EMSC   FIJI REGION                  

P: 16APR2024 162290    21.0S  178.0W 4.0-5.9 BAAAA  Tonga Islands              

 

O: 13APR2024 10:47:02  15.1S  173.1W MB=5.4  EMSC   TONGA                        

O: 13APR2024 10:47:02  15.0S  173.0W mb=5.3  ANSS   NE of Hihifo Tonga

P: 14APR2024 162274    16.0S  173.0W 4.0-5.4 AAAAA  Tonga Islands              

 

NEIC reported this earthquake of M 5.3 in Tonga was felt with intensity up to IV in the area(s) of  Tonga  in Hihifo.

EMSC reported it was felt with moderate intensity in Samoa.

 

OCEAN RIDGES

 

O: 14APR2024 05:28:47   7.6N   37.2W MW=5.3  EMSC   CENTRAL MID-ATLANTIC RIDGE   

P: 12APR2024 162050     8.0N   37.0W 4.0-5.6 AAAAA  Central Mid-Atlantic Ridg  

 

O: 13APR2024 10:37:54  34.0N  177.0W MB=4.7  EMSC   NORTH PACIFIC OCEAN          

O: 13APR2024 10:37:54  34.0N  177.0W mb=4.7  ANSS   North Pacific Ocean

 

O: 13APR2024 06:53:45  42.1S   88.9E MB=5.0  EMSC   SOUTHEAST INDIAN RIDGE       

P: 12APR2024 162306    42.0S   88.0E 4.0-5.6 AAAAA  So. Indian Ocean           

 

O: 13APR2024 15:17:18  49.1S  121.4E MB=5.1  EMSC   WESTERN INDIAN-ANTARCTIC RIDGE

P:  7APR2024 162044    49.0S  122.0E 4.0-5.8 CAAAA  So. of Australia           

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 14APR2024 03:37:41  29.9S  178.7W MB=4.6  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P: 13APR2024 162298    30.0S  179.0W 4.0-5.6 AAAAA  No. Kermadec Islands       

 

O: 14APR2024 06:05:07  35.2S  178.9W MB=4.6  EMSC   EAST OF NORTH ISLAND, N.Z.   

P: 14APR2024 162298    37.0S  180.0W 3.5-5.1 ABAAA  E. of North Islands N.Z.   

 

O: 13APR2024 18:18:51  37.7S  179.6E ML=4.1  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 16APR2024 162299    38.0S  176.0E 3.0-4.4 BACAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 13APR2024 12:00:29  31.5N  138.3E MB=4.6  EMSC   IZU ISLANDS, JAPAN REGION    

P:  8APR2024 161887    31.0N  142.0E 4.0-5.6 BACAA  Off East Coast Honshu      

 

O: 13APR2024 16:29:51  44.5N  148.2E MB=4.4  EMSC   KURIL ISLANDS                

P: 14APR2024 162221    45.0N  147.0E 3.5-5.4 AAAAA  So. Kurils                 

 

O: 14APR2024 04:50:35  45.9N  151.2E MB=4.4  EMSC   KURIL ISLANDS                

P: 12APR2024 162221    45.0N  151.0E 3.5-5.6 AAAAA  So. Kurils                 

 

No earthquakes of M>=4 were located in Japan or the Kuril Islands today.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 14APR2024 04:36:44  32.6N  115.7W ML=2.2  EMSC   BAJA CALIFORNIA, MEXICO      

P: 15APR2024 162168    32.4N  115.8W 2.5-4.8 AAAAA  So. California             

 

O: 13APR2024 16:08:38  33.4N  116.3W ML=3.4  EMSC   SOUTHERN CALIFORNIA           

P: 12APR2024 162169    33.4N  116.7W 2.5-4.6 AAAAA  So. California             

 

O: 14APR2024 06:47:36  35.8N  117.6W ML=2.4  EMSC   CENTRAL CALIFORNIA           

P: 13APR2024 162174    35.8N  117.6W 2.5-4.5 AAAAA  So. California             

 

O: 14APR2024 06:23:55  37.1N  121.5W ML=2.5  EMSC   NORTHERN CALIFORNIA          

P:  8APR2024 161865    37.1N  121.5W 2.5-4.5 CAAAA  Central California         

P: 13APR2024 162137    37.4N  121.8W 2.5-4.6 AAAAA  Central California         

 

O: 13APR2024 13:45:17  37.3N  118.5W ML=3.1  EMSC   CENTRAL CALIFORNIA           

P: 13APR2024 162133    37.9N  118.2W 2.5-4.6 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.1 in Mammoth Lakes, California was felt with intensity up to IV in the area(s) of  Mammoth Lakes, California in West Bishop.

 

O: 13APR2024 09:18:47  38.8N  122.8W MD=2.3  EMSC   NORTHERN CALIFORNIA          

P: 14APR2024 162138    38.7N  122.7W 2.5-4.6 AAAAA  Central California         

 

O: 13APR2024 13:35:10  40.3N  121.8W MD=2.3  EMSC   NORTHERN CALIFORNIA          

P: 14APR2024 162211    40.4N  122.2W 2.5-4.9 AAAAA  Northern California        

 

 

ALASKA

 

O: 14APR2024 03:23:02  51.1N  179.2W ML=3.6  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 15APR2024 162231    51.7N  179.7W 3.5-4.9 AAAAA  Andreanoff Isls, Aleutians 

 

O: 14APR2024 03:58:03  53.1N  166.8W ML=3.8  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 12APR2024 162237    53.7N  167.0W 3.5-5.0 AAAAA  Fox Islands, Aleutians     

 

O: 13APR2024 20:10:43  62.2N  149.7W MW=4.2  EMSC   CENTRAL ALASKA               

P: 14APR2024 162258    62.9N  150.2W 3.2-4.9 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 4.1 in Central Alaska was felt with intensity up to III in the area(s) of  Central Alaska in Susitna North.

EMSC reported it with M 4.2 was felt with moderate intensity in Central Alaska at Talkeetna, Alaska with a loud earthquake noise.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 13APR2024 08:57:24  46.9N  121.9W ML=2.2  EMSC   WASHINGTON                    

P: 15APR2024 162224    47.5N  121.8W 2.0-4.4 AAAAA  Washington state, U.S.     

 

O: 13APR2024 11:21:47  56.8N  121.8W MB=4.4  ECAN WNW OF FORT ST. JOHN, BC

O: 13APR2024 11:21:48  56.8N  121.6W mb=4.1  ANSS   Fort St. John Canada

O: 13APR2024 11:21:48  56.8N  121.6W ML=4.4  EMSC   BRITISH COLUMBIA, CANADA     

P:  5APR2024 161962    56.0N  120.0W 2.0-4.1 CABAA  Alberta                    

 

ROCKY MOUNTAINS REGION

 

O: 13APR2024 07:30:15  31.7N  104.6W ML=2.2  EMSC   WESTERN TEXAS

O: 13APR2024 18:57:38  31.7N  104.1W ML=2.9  EMSC   WESTERN TEXAS

O: 13APR2024 19:30:19  31.7N  104.0W ML=2.1  EMSC   WESTERN TEXAS

O: 13APR2024 21:33:05  31.7N  104.7W ML=2.1  EMSC   WESTERN TEXAS

O: 14APR2024 06:38:01  32.0N  103.8W ML=2.2  EMSC   WESTERN TEXAS

O: 13APR2024 20:32:57  30.9N  103.5W ML=2.7  EMSC   WESTERN TEXAS                

P: 15APR2024 162163    31.2N  104.1W 2.0-3.9 AAAAA  SW U.S.A                   

 

O: 13APR2024 09:45:45  42.8N  111.2W ML=2.6  EMSC   SOUTHERN IDAHO               

P: 14APR2024 162226    43.0N  111.5W 2.0-4.4 AAAAA  Yellowstone/Wyoming        

 

O: 13APR2024 09:03:12  46.9N  112.5W ML=2.6  EMSC   WESTERN MONTANA              

P:  9APR2024 161960    46.4N  111.4W 2.0-4.1 BAAAA  Yellowstone/Wyoming        

 

NEIC reported this earthquake of M 2.6 in Montana was felt with intensity up to III in the area(s) of  Montana in Lincoln.

 

EASTERN U.S./CANADA

 

O: 13APR2024 20:50:48  32.1N   93.4W ML=2.6  EMSC   LOUISIANA                    

O: 13APR2024 20:50:48  32.1N   93.4W mb=2.6  ANSS   NW of Edgefield Louisiana

P: 17APR2024 162179    34.0N   94.0W 2.0-3.9 BBAAA  Southeast U.S.             

 

O: 13APR2024 19:31:44  36.9N   90.4W MD=2.2  EMSC   SOUTHEASTERN MISSOURI        

O: 13APR2024 19:31:44  36.9N   90.4W md=2.3  ANSS   ESE of Williamsville Missouri

P:  9APR2024 161880    36.7N   89.7W 2.0-3.9 BAAAA  New Madrid area            

P: 13APR2024 162152    37.0N   89.0W 2.0-4.0 AAAAA  New Madrid area            

P: 15APR2024 162152    36.3N   89.5W 2.0-4.1 AAAAA  New Madrid area             

 

O: 14APR2024 05:02:29  45.6N   67.6W MB=1.5  ANSS   NW OF VANCEBORO, MAINE       

P:  8APR2024 161927    47.0N   69.0W 2.0-4.1 CBAAA  Maine                      

P: 18APR2024 162199    47.0N   69.0W 2.0-4.1 BBAAA  Maine                      

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

STRONG EARTHQUAKE IN SOLOMON ISLANDS

 

EARTHQUAKE SUMMARY FOR APRIL 12, 2024

 

The strongest earthquake in the world today was an M 5.8 in the Solomon Islands. NEIC reported it was felt with intensity up to V in Kirakira, Solomon Islands.

This is the strongest earthquake within about 200 km of this epicenter since an M 6.1 on May 21, 2023 which followed an M 7.0 about 200 km northwest of this on November 22, 2022. At the time of the M 6.1 on May 21, 2023 this summary noted:

 

 

"A strong M 6.1 was also felt in the Solomon Islands today. NEIC reported it was felt with intensity V in the Solomon Islands at Kirakira Makira and Ulawa and in Honiara, Guadalcanal. This is part of a regional enhancement of seismicity following the M 7.7 and 7.2 events in the Loyalty Islands of the past two day which occurred about 15 degrees south east of this epicenter in the Solomon Islands. Today's event of M 6.1 is the strongest in the Solomon Islands within about 200 km since an M 6.3 on January 27, 2020 and an M 6.5 on September 9, 2018." (May 21, 2023)

 

Forecasts 162268 had expected today's earthquake within about 10 km was likely around April 15, 2024. This activity is at 145 degrees from the M 6.7 in Brazil of January 20, 2024 and  at 103 degrees from the M 6.7 in the Loyalty Islands of March 27, 2024 and may have been promoted by energy from those sources.

 

O: 12APR2024 15:59:17  10.1S  161.0E Mw=5.8  EMSC   SOLOMON ISLANDS              

P: 15APR2024 162268    10.0S  161.0E 4.0-5.6 BAAAA  No. of Santa Cruz Islands  

 

An M 5.6 also occurred today in western Xizang, China today. This followed a smaller event about 300 km to the south earlier in the day on the Xizang-India border. The only event within about 200 km of today's M 5.6 in Xizang in the past 35 years was an M 5.8-6.1 on May 5, 2007. Today's event occurred near local solar noon and was probably promoted by the new moon of April 8 as it occurred near the longitude of maximum tidal stress with that alignment as noted in this and previous issues of this summary:

 

"The new moon  arrived on April 8, 2024 at 18:21 UT. This involved a total eclipse of the sun which  began in western Mexico and extend through Texas, the east-Central U.S. eastern Canada and the northeastern U.S. States of Emergency have been declared for much of the eclipse path due to expected migrations of people to view the total eclipse.  Longitudes which are at local solar noon at this time are near 100 West while those at local solar midnight area near 80 East. These include areas of central North America and the East Pacific in the west and central Asia including China, India, Nepal in the East. These areas are most likely to see moderate tidal triggering at this time. Tidal enhancement of regional seismicity is possible in many areas, however, a major earthquake associated with this new moon is considered possible in the next week by this report. Minor to moderate seismic enhancement along the path through the U.S. Mexico and Canada is likely in the next week." (April 5-12, 2024)

 

Forecast 162186 had expected this region of Xizang would be active around April 13-15 within about 100 km of the M 4.0.

 

O: 12APR2024 10:25:33  30.3N   80.7E ML=4.0  EMSC   WESTERN XIZANG-INDIA BORDER RE

P: 13APR2024 162186    30.0N   80.0E 3.8-5.4 AAAAA  Xizang                      

 

O: 13APR2024 05:44:41  33.6N   81.9E Mw=5.6  EMSC   WESTERN XIZANG               

O: 12APR2024 08:47:59  33.4N   81.7E mb=4.7  EMSC   WESTERN XIZANG

P: 15APR2024 162186    30.0N   82.0E 3.8-5.4 ACAAA  Xizang                     

 

The strongest earthquake in the U.S. or Canada today was an M 4.0 off the coast of Northern California.  NEIC reported this earthquake of M 4.0 off the coast of Northern California  was felt with intensity up to III in the area(s) of  Northern California in Petrolia.  This is the strongest earthquake within about 100 km of this epicenter since an M 4.1 on February 10, 2023. The only earthquake with significantly larger magnitude in this region in the past half year was an M 4.9 on February 2, 2024.

 

Forecast 162212 had expected today's event within about 50 km of today's epicenter around April 14. This epicenter is at the fourth node (90 degrees) from the M 7.4 in Taiwan of April 2, 2024 and at the fifth node (72 degrees) from  the M 7.5 in Western Honshu, Japan of January 1, 2024 and may have been promoted by energy from those sources.

 

O: 12APR2024 17:41:11  40.4N  125.1W MD=2.4  EMSC   OFFSHORE NORTHERN CALIFORNIA

O: 12APR2024 17:07:30  40.4N  125.3W Mw=4.0  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 14APR2024 162212    40.5N  125.8W 2.5-4.8 AAAAA  Off Coast of No. Calif     

 

An unusually large earthquake of M 3.8 occurred in northern Mexico near Nuevo Leon. This epicenter saw the total eclipse of the sun on April 8, 2024 at 18:24 UT. It is likely that tidal stresses with that alignment helped promote the earthquake in Nuevo Leon today. The last earthquake within about 150 km  of this epicenter in Nuevo Leon, Mexico with M>=3.8 occurred on March 18, 2014 with M 4.0 about 100 km south of today's epicenter. The strongest earthquake in this region in the past 35 years was an M 4.5 on April 6, 2004.  Forecast 162122 had expected today's event in this region was likely around April 12.

 

O: 12APR2024 20:51:09  26.2N   99.8W ML=3.8  EMSC   NUEVO LEON, MEXICO           

P: 12APR2024 162122    26.0N  102.0W 3.0-4.7 AABAA  Northern Mexico            

 

An M 2.8 was also recorded on April 12, 2024 in the New Madrid region of Missouri.  NEIC reported this earthquake of M 2.8 in Missouri was felt with intensity up to III in the area(s) of  Missouri in Risco.  The total eclipse was seen at this epicenter at 19:00 UT on April 8 lasting 4 minutes and 11 seconds. This is a seismic area but the last earthquake of M>=2.8 in this area south of Saint Louis, Missouri within about 100 km of today's epicenter occurred as an M 3.3  half a year ago on December 21, 2023. More such activity is likely in the New Madrid, Missouri, area in the next week.

 

Forecast 161880 had expected today's event within about 25 km was likely around April 9.

 

O: 12APR2024 08:36:15  36.6N   89.8W MD=2.7  EMSC   SOUTHEASTERN MISSOURI        

O: 12APR2024 08:36:15  36.6N   89.8W MD=2.8  ANSS   NW OF RISCO MISSOURI         

P: 13APR2024 162152    37.0N   89.0W 2.0-4.0 AAAAA  New Madrid area            

P: 15APR2024 162152    36.3N   89.5W 2.0-4.1 BAAAA  New Madrid area            

 

An M 5.0 quake hit near the antipode of Missouri today. Forecast 162306 had expected this event within about 100 km was likely around April 12. This epicenter is at the fourth node (90 degrees) from the M 7.5 in western Honshu of January 1, 2024 and the fifth node (72 degrees) from Taiwan event of M 7.4 on April 2 and may have been promoted by energy from those sources.

 

O: 13APR2024 06:53:45  42.1S   88.9E mb=5.0  EMSC   SOUTHEAST INDIAN RIDGE        

P: 12APR2024 162306    42.0S   88.0E 4.0-5.6 AAAAA  So. Indian Ocean           

 

A new series of light earthquakes also occurred today in the region near Falls City and Stockdale, Texas with M 1.9 and 1.6. This epicenter saw the total eclipse of the sun on April 8 at 18:32 UT. This new round of seismicity  in this area was probably promoted by strong tidal stresses with the eclipse. The last earthquake of M>=1.9 in this area was reported by NEIC on March 10, 2024 and as an M 3.9 on February 22, 2024, followed by an M 2.3 on February 24, 2024.

 

Forecast 162122 had expected today's event within about 100 km was likely around April 14.

 

O: 12APR2024 12:31:47  29.1N   97.9W ML=1.9  ANSS   FALLS CITY TEXAS             

O: 12APR2024 08:36:09  29.1N   98.0W ML=1.6  ANSS   S OF STOCKDALE TEXAS         

P: 14APR2024 162122    28.0N   98.0W 3.0-4.4 ABAAA  Northern Mexico            

 

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 12APR2024 18:44:37  23.4N  120.2E Mw=4.6  EMSC   TAIWAN

O: 12APR2024 14:19:58  22.3N  121.7E mb=4.6  EMSC   TAIWAN REGION                

P: 13APR2024 162126    24.0N  121.0E 4.0-5.4 ABAAA  Taiwan                     

 

NEIC reported this earthquake of M 4.6 in Taiwan was felt with intensity up to III in the area(s) of  Taiwan in Pizitou.

A second earthquake of M 4.6 in Taiwan was felt with intensity up to IV in Hengchun, Taiwan.

 

O: 12APR2024 10:25:33  30.3N   80.7E ML=4.0  EMSC   WESTERN XIZANG-INDIA BORDER RE

P: 13APR2024 162186    30.0N   80.0E 3.8-5.4 AAAAA  Xizang                     

 

O: 13APR2024 05:44:41  33.6N   81.9E Mw=5.6  EMSC   WESTERN XIZANG               

O: 12APR2024 08:47:59  33.4N   81.7E mb=4.7  EMSC   WESTERN XIZANG

P: 15APR2024 162186    30.0N   82.0E 3.8-5.4 ACAAA  Xizang                     

 

O: 12APR2024 08:13:43  41.2N   78.6E mb=5.1  EMSC   SOUTHERN XINJIANG, CHINA

O: 13APR2024 05:32:25  41.3N   78.8E mb=4.1  EMSC   SOUTHERN XINJIANG, CHINA     

P: 16APR2024 162198    41.0N   78.0E 4.0-5.8 BAAAA  Kirgizstan/Xinjiang        

 

NEIC reported this earthquake of M 5.1 in Southern Xinjiang, China was felt with intensity up to III in the area(s) of  Southern Xinjiang, China  in Aykol.

EMSC reported strong shaking in Kazakhstan at Esik qalalyq akimshilik, Talgar, Almaty, Besagash, and as far as Bishkek, Kyrgyzstan.

 

 

INDONESIA AND PHILIPPINES

 

O: 13APR2024 06:26:36   2.3N  126.8E mb=5.2  EMSC   MOLUCCA SEA                  

P: 11APR2024 162055     3.0N  126.0E 4.0-5.4 AAAAA  Halmahera                  

 

O: 13APR2024 00:24:30   2.8S  129.4E ML=4.2  EMSC   SERAM, INDONESIA             

P:  8APR2024 161798     3.0S  129.0E 4.0-5.4 BAAAA  Ceram area                 

 

O: 12APR2024 09:18:50   3.3S  145.6E mb=4.7  EMSC   NEAR N COAST OF NEW GUINEA, PN

P: 12APR2024 162077     5.0S  144.0E 4.0-5.4 ABBAA  Papua New Guinea           

P: 19APR2024 162072     3.0S  146.0E 4.0-5.6 CAAAA  New Ireland                

 

O: 12APR2024 10:32:50   8.4S  119.6E ML=4.2  EMSC   FLORES REGION, INDONESIA     

P: 16APR2024 162067     7.0S  121.0E 4.0-5.4 BBBAA  Flores Island area         

 

CENTRAL AND SOUTH AMERICA

 

O: 12APR2024 16:09:33   8.0S   76.4W ML=4.1  EMSC   NORTHERN PERU                

P: 10APR2024 161796     9.0S   75.0W 3.5-5.4 AABAA  Brazil                     

 

O: 12APR2024 20:20:50  13.4N   90.2W ML=4.2  EMSC   OFFSHORE EL SALVADOR         

P: 15APR2024 162094    13.0N   90.0W 3.5-5.4 BAAAA  Guatemala                  

 

O: 13APR2024 01:28:34  13.9N   93.0W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 13APR2024 162090    14.0N   93.0W 3.5-5.4 AAAAA  Chiapas, Mexico            

 

O: 12APR2024 16:47:57  16.0N   98.0W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 15APR2024 162105    17.0N  100.0W 3.5-5.3 BABAA  Oaxaca, Mexico             

 

O: 12APR2024 22:23:21  15.5N   96.1W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO

O: 12APR2024 20:32:29  15.9N   94.7W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO

O: 12APR2024 11:52:06  17.7N   95.6W ML=4.2  EMSC   VERACRUZ, MEXICO             

P: 14APR2024 162090    18.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

EMSC reported this earthquake of M 4.2 in Oaxaca, Mexico was felt with intensity up to III in the area(s) of  Oaxaca, Mexico at Crucecita with a heavy rumbling sound.

 

O: 12APR2024 15:51:07  18.2N   73.6W ML=3.1  EMSC   HAITI REGION                 

P:  5APR2024 161843    19.0N   73.0W 3.0-4.5 CAAAA  Bahamas/No. Caribbean      

 

O: 12APR2024 09:37:43  18.9N  107.3W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO 

P: 12APR2024 162092    19.0N  107.0W 3.5-5.5 AAAAA  Coast of Jalisco, Mexico   

 

O: 12APR2024 06:55:03  19.2N   69.8W ML=3.7  EMSC   DOMINICAN REPUBLIC           

P: 15APR2024 162111    20.0N   71.0W 3.0-4.8 AAAAA  Bahamas/No. Caribbean      

 

O: 13APR2024 07:01:11  19.5N   66.0W MD=3.6  EMSC   PUERTO RICO REGION           

P: 13APR2024 162106    18.0N   67.0W 3.4-5.2 ABAAA  Puerto Rico                 

 

O: 12APR2024 20:38:13  19.7N  104.5W ML=3.4  EMSC   JALISCO, MEXICO              

P: 13APR2024 162099    18.0N  103.0W 3.5-5.3 ABBAA  Michoacan, Mexico          

 

O: 13APR2024 00:02:58  20.8S   70.4W mb=4.0  EMSC   OFFSHORE TARAPACA, CHILE      

P: 12APR2024 162282    21.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

 

EMSC reported this earthquake of M 4.0 in Tarapaca, Chile was felt with intensity up to III in the area(s) of  Tarapaca, Chile in Alto Hospicio.

 

O: 12APR2024 20:51:09  26.2N   99.8W ML=3.8  EMSC   NUEVO LEON, MEXICO           

P: 12APR2024 162122    26.0N  102.0W 3.0-4.7 AABAA  Northern Mexico            

 

O: 12APR2024 07:39:10  27.4N  111.6W ML=3.8  EMSC   GULF OF CALIFORNIA           

P: 15APR2024 162115    28.0N  112.0W 3.5-5.1 AAAAA  Gulf of California         

 

O: 12APR2024 21:02:54  30.1S   72.3W Mw=4.1  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 13APR2024 162294    31.0S   70.0W 4.0-5.8 AABAA  Central Chile              

 

 

O: 12APR2024 22:23:21  15.5N   96.1W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO

O: 12APR2024 20:32:29  15.9N   94.7W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO

 

AFRICA AND EUROPE

 

O: 13APR2024 03:14:17  39.0N   23.4E ML=3.9  EMSC   GREECE

O: 13APR2024 03:36:19  38.9N   23.4E ML=4.0  EMSC   GREECE                        

O: 13APR2024 03:36:19  38.9N   23.4E ML=4.3  ANSS   GREECE                       

P: 13APR2024 162154    37.0N   22.0E 3.0-4.4 ABAAA  No. Greece                 

 

NEIC reported this earthquake of M 4.3 in Greece was felt with intensity up to III in the area(s) of  Greece in Istiaia.

EMSC reported it was felt with moderate intensity at Istiaia, Skiathos, Psachna, Anilio, Chalkida, Volos, Nea Ionia, Livadeia, Itea, Acharnes, Irakleio, Llion, among others.

A number of moderate and light aftershocks were also reported to have been lightly felt in this area.

 

O: 12APR2024 22:18:41  71.6N    3.1W Mw=4.7  EMSC   JAN MAYEN ISLAND REGION      

P: 15APR2024 162263    72.0N    0.0E 3.0-4.8 BAAAA  Norway                     

 

SOUTHWEST PACIFIC

 

O: 12APR2024 20:02:52  15.0S  167.4E mb=4.6  EMSC   VANUATU                      

P: 17APR2024 162278    15.0S  167.0E 4.0-5.6 BAAAA  Vanuatu Islands            

 

O: 12APR2024 15:59:17  10.1S  161.0E Mw=5.8  EMSC   SOLOMON ISLANDS              

P: 15APR2024 162268    10.0S  161.0E 4.0-5.6 BAAAA  No. of Santa Cruz Islands  

 

OCEAN RIDGES

 

O: 13APR2024 06:53:45  42.1S   88.9E mb=5.0  EMSC   SOUTHEAST INDIAN RIDGE       

P: 12APR2024 162306    42.0S   88.0E 4.0-5.6 AAAAA  So. Indian Ocean           

 

O: 12APR2024 19:27:52   9.9N  104.5W mb=4.6  EMSC   NORTHERN EAST PACIFIC RISE   

P:  3APR2024 161786     9.0N  103.0W 4.0-5.4 AAAAA  Central Pacific Ocean      

 

 

ZEALANDIA AND AUSTRALIA REGION

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today.

 

JAPAN AND KURIL ISLANDS

 

O: 12APR2024 09:00:17  28.3N  129.3E Mw=4.9  EMSC   RYUKYU ISLANDS, JAPAN        

P:  4APR2024 161854    29.0N  129.0E 4.0-5.5 CAAAA  Ryukyu Islands             

P: 13APR2024 162118    29.0N  131.0E 4.0-5.5 AABAA  Kyushu Japan               

 

O: 12APR2024 17:07:49  34.1N  141.8E mb=4.7  EMSC   OFF EAST COAST OF HONSHU, JAPA

P: 11APR2024 162160    34.0N  142.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 12APR2024 09:57:37  31.4N  115.5W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 15APR2024 162166    31.9N  116.3W 2.5-4.8 BAAAA  So. California             

 

O: 12APR2024 09:22:37  32.7N  115.9W ML=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 13APR2024 162168    32.6N  116.1W 2.5-4.8 AAAAA  So. California             

 

O: 12APR2024 19:24:47  33.8N  118.2W ML=2.5  EMSC   GREATER LOS ANGELES AREA, CALI

P: 13APR2024 162170    33.7N  117.5W 2.5-4.5 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.6 in Los Angeles, California was felt with intensity up to III in the area(s) of  Los Angeles, California in Long Beach.

EMSC reported moderate to strong shaking in California at Long Beach, Lakewood, Paramount, South Gate with slight rumble, Downey.

 

O: 12APR2024 23:46:00  38.1N  122.3W MD=2.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 13APR2024 162137    37.9N  122.0W 2.5-4.8 AAAAA  Central California         

 

O: 12APR2024 16:42:20  38.8N  122.8W MD=2.2  EMSC   NORTHERN CALIFORNIA           

O: 12APR2024 22:17:42  38.8N  122.5W MD=2.4  EMSC   NORTHERN CALIFORNIA

P: 14APR2024 162138    38.7N  122.7W 2.5-4.6 AAAAA  Central California         

 

O: 12APR2024 18:21:42  40.2N  122.1W MD=2.9  EMSC   NORTHERN CALIFORNIA          

P: 14APR2024 162211    40.4N  122.2W 2.5-4.9 AAAAA  Northern California        

 

NEIC reported this earthquake of M 2.9 in Northern California was felt with intensity up to III in the area(s) of  Northern California in Red Bluff.

 

O: 12APR2024 17:41:11  40.4N  125.1W MD=2.4  EMSC   OFFSHORE NORTHERN CALIFORNIA

O: 12APR2024 17:07:30  40.4N  125.3W Mw=4.0  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 14APR2024 162212    40.5N  125.8W 2.5-4.8 AAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

No events of M>=3 were located in Alaska today.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 13APR2024 03:49:12  48.1N  123.5W ML=2.2  EMSC   OLYMPIC PENINSULA, WASHINGTON

P: 13APR2024 162225    48.0N  123.0W 2.0-4.3 AAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 12APR2024 12:38:20  35.3N  101.8W ML=2.2  EMSC   TEXAS PANHANDLE REGION       

P: 15APR2024 162141    37.0N  105.2W 2.0-4.1 BBCAA  Colorado area              

 

O: 13APR2024 05:48:42  32.7N  104.4W ML=2.8  EMSC   NEW MEXICO

O: 13APR2024 04:23:53  32.6N  104.4W ML=2.5  EMSC   NEW MEXICO                   

P: 15APR2024 162163    31.2N  104.1W 2.0-3.9 ABAAA  SW U.S.A                   

 

NEIC reported this earthquake of M 2.5 in Western Texas was felt with intensity up to III in the area(s) of  Western Texas in Atoka, New Mexico.

 

O: 12APR2024 07:14:42  37.6N  112.3W ML=2.1  EMSC   UTAH                         

P: 13APR2024 162184    37.0N  111.8W 2.0-4.0 AAAAA  Utah area                  

 

EASTERN U.S./CANADA

 

O: 11APR2024 23:58:21  68.8N   69.4W MB=3.1  ECAN OF CLYDE RIVER, NU             

O: 11APR2024 22:51:43  72.0N   75.0W MB=2.8  ECAN OF POND INLET, NU              

P:  9APR2024 161997    71.0N   75.0W 2.5-4.0 AAAAA  Baffin/Davis Strait Canada 

P:  9APR2024 161997    73.3N   73.5W 2.5-4.1 ABAAA  Baffin/Davis Strait Canada 

 

O: 12APR2024 12:31:47  29.1N   97.9W ML=1.9  ANSS   FALLS CITY TEXAS             

O: 12APR2024 08:36:09  29.1N   98.0W ML=1.6  ANSS   S OF STOCKDALE TEXAS         

P: 14APR2024 162122    28.0N   98.0W 3.0-4.4 ABAAA  Northern Mexico             

 

O: 12APR2024 18:56:12  35.9N   95.1W ML=2.0  EMSC   OKLAHOMA                     

P: 13APR2024 162180    35.0N   96.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 12APR2024 08:36:15  36.6N   89.8W MD=2.7  EMSC   SOUTHEASTERN MISSOURI         

O: 12APR2024 08:36:15  36.6N   89.8W MD=2.8  ANSS   NW OF RISCO MISSOURI         

P: 13APR2024 162152    37.0N   89.0W 2.0-4.0 AAAAA  New Madrid area            

P: 15APR2024 162152    36.3N   89.5W 2.0-4.1 BAAAA  New Madrid area            

 

 

O: 12APR2024 09:20:00  40.7N   74.7W ML=1.8  ANSS   GLADSTONE NEW JERSEY         

O: 12APR2024 13:05:04  40.7N   74.7W ML=1.9  ANSS   GLADSTONE NEW JERSEY         

P: 13APR2024 162206    40.0N   74.0W 2.0-4.3 AAAAA  New England                

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

SWARM IN JALISCO, MEXICO CONTINUES

 

EARTHQUAKE SUMMARY FOR APRIL 11, 2024

 

It was a relatively quiet day in global seismicity. No significant earthquakes

of M>5.0 were recorded in the world today. An interesting series continued in the region of Jalisco, and Michoacan Mexico and reached the highest magnitude of the current swarm with an M 4.5 off the coast of Jalisco, Mexico. This event occurred within minutes of local solar midnight and was probably promoted by tidal stresses which maximize near this hour. The current instability in seismicity in Jalisco began shortly after the total eclipse of the sun maximized over these epicenters on April 8 and was reported in previous issues of this summary as:

 

 

"A series of moderate earthquakes also occurred today in the region of Jalisco,

Mexico.  NEIC reported these earthquake of M 4.3 and M 4.5 in Jalisco, Mexico were felt with intensity up to III in the area(s) of  Jalisco, Mexico in Emiliano Zapata. EMSC reported moderate shaking at El Tuito, Mexico. This is the area where the maximum total eclipse in the world occurred on April 8.  The total eclipse of the sun reached its maximum in this area being in shadow for 4 minutes 22 seconds at this epicenter about 17:58 UT. It is likely this activity in Jalisco was promoted by tidal stresses associated with the total eclipse of the sun April 8. This area appears to be at a hair trigger and may see additional induced seismicity with the next full moon. An M 4.3 also hit further east in Michoacan, Mexico on April 11.

 

Forecast 162092 had expected these events were likely around April 12 and 17, 2024 within about 50 km." (April 10-11, 2024)

 

These epicenters are also at 103 degrees from the M 6.9 in the Mariana Islands

of April 5, 2024 and may have been promoted by energy from that source.

 

 

O: 11APR2024 08:57:49  18.4N  106.1W ML=3.6  EMSC   OFF COAST OF JALISCO, MEXICO 

O: 11APR2024 07:29:08  18.5N  106.1W MB=4.5  EMSC   OFF COAST OF JALISCO, MEXICO 

P: 12APR2024 162092    19.0N  107.0W 3.5-5.5 AAAAA  Coast of Jalisco, Mexico   

 

O: 11APR2024 14:55:29  18.7N  103.1W ML=4.3  EMSC   MICHOACAN, MEXICO            

P: 13APR2024 162099    18.0N  103.0W 3.5-5.3 AAAAA  Michoacan, Mexico          

 

O: 11APR2024 09:59:20  19.0N  107.3W ML=3.9  EMSC   OFF COAST OF JALISCO, MEXICO 

O: 11APR2024 08:56:28  18.6N  106.0W ML=3.6  EMSC   OFF COAST OF JALISCO, MEXICO

O: 12APR2024 03:21:19  18.8N  107.4W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO

O: 11APR2024 07:49:47  18.9N  107.3W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO

P: 12APR2024 162092    19.0N  107.0W 3.5-5.5 AAAAA  Coast of Jalisco, Mexico   

 

 

The strongest earthquake in the U.S., Canada or vicinity today was an M 4.0 in the Greenland Sea. It was not reported felt in this remote area. The last earthquakes of equal or larger magnitude in this region of the Greenland Sea occurred as an M 4.7 and associated shocks on October 11, 2023. Forecast 162263  had expected enhanced seismicity in this area was likely in mid-April.

 

O: 11APR2024 08:44:48  73.2N    6.6E MW=4.0  EMSC   GREENLAND SEA                

P: 15APR2024 162263    72.0N    0.0E 3.0-4.8 BBAAA  Norway                     

 

EMSC reported earthquakes of M 2.9 and 2.7 on April 11, 2024 in the Gaspe Peninsula, near Sept-Iles, Quebec. The total eclipse of the sun was viewable in this area around 19:36 UT on April 8. Earthquakes Canada reported the M 2.9 was felt lightly in the Sept-ales area of Quebec. The last earthquake according to NEIC in the Gaspe Peninsula of Quebec within about 150 km of this epicenter with M>=3 was an M 3.4 on November 17, 2017. Smaller events were also observed in the Saint Lawrence Seaway in the past several days but these may not be related to eclipse as the area is  active on a weekly basis. Forecasts 162206 and 161927 had expected these events within about 25 km were likely around April 12.

 

O: 11APR2024 09:00:35  49.9N   66.3W MB=2.9  ECAN OF SEPT-├ÄLES, QC, FELT  

O: 11APR2024 09:02:57  49.9N   66.3W MB=2.7  ECAN OF SEPT-├ÄLES, QC              

P: 12APR2024 162206    49.8N   66.5W 2.0-4.0 AAAAA  New England                

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 11APR2024 14:09:25  24.1N  121.7E ML=4.0  EMSC   TAIWAN

O: 12APR2024 00:29:01  24.0N  121.7E ML=4.2  EMSC   TAIWAN                       

P: 13APR2024 162126    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

 

O: 12APR2024 04:03:43  33.6N   82.0E MB=4.6  EMSC   WESTERN XIZANG               

O: 12APR2024 05:04:57  33.6N   81.9E mb=4.6  EMSC   WESTERN XIZANG

P: 15APR2024 162186    30.0N   82.0E 3.8-5.4 BCAAA  Xizang                     

 

INDONESIA AND PHILIPPINES

 

O: 11APR2024 13:06:19   2.6N  127.4E MB=4.5  EMSC   MOLUCCA SEA                  

P: 11APR2024 162055     3.0N  126.0E 4.0-5.4 AABAA  Halmahera                  

P: 17APR2024 162055     2.0N  128.0E 4.0-5.4 CAAAA  Halmahera                  

 

O: 11APR2024 10:29:45   2.8S  129.5E ML=4.1  EMSC   SERAM, INDONESIA

O: 11APR2024 16:46:19   2.8S  129.5E ML=4.1  EMSC   SERAM, INDONESIA

O: 11APR2024 15:50:25   2.9S  129.4E MB=4.9  EMSC   SERAM, INDONESIA             

P:  8APR2024 161798     3.0S  129.0E 4.0-5.4 BAAAA  Ceram area                 

 

O: 11APR2024 07:55:28   3.2S  135.7E ML=4.3  EMSC   PAPUA, INDONESIA             

P: 17APR2024 162084     2.0S  134.0E 4.0-5.4 CBBAA  West Irian, PNG            

 

O: 11APR2024 17:34:07   3.7N  126.8E MB=5.0  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 11APR2024 162055     3.0N  126.0E 4.0-5.4 AAAAA  Halmahera                  

 

O: 11APR2024 22:56:12   5.3S  140.3E MB=4.7  EMSC   PAPUA, INDONESIA             

P: 13APR2024 162085     5.0S  139.0E 4.0-5.6 AABAA  West Irian, PNG            

 

O: 11APR2024 23:14:37   5.8S  112.5E ML=4.3  EMSC   JAVA SEA                     

P:  4APR2024 161810     6.0S  112.0E 4.0-5.6 CAAAA  So. of Bali                

 

O: 12APR2024 00:02:25   8.6N  123.1E MB=4.6  EMSC   MINDANAO, PHILIPPINES        

P: 11APR2024 162056     8.0N  125.0E 4.0-5.4 AABAA  Central Philippines        

 

NEIC reported this earthquake of M 4.6 in Mindanao, Philippines was felt with intensity up to III in the area(s) of  Mindanao, Philippines in Manukan.

EMSC reported moderate shaking in Zamboanga Del Norte, Philippines.

BMG reported intensity V in New Bataan, Pantukan, Mabini, Nabunturan and Maco, Davao de Oro; IV in City of Tagum, Davao del Norte, City of Bisling, Hinatuan and Lingig, Surigao del Sur and III in Boston, Cateel, Baganga, Manay and Caraga Oriental and in Tabgina, Surgiao del Sur with lesser shaking in Davao Oriental, and Cotabato, Philippines.

 

O: 12APR2024 04:00:34   9.4S  115.5E ML=4.1  EMSC   SOUTH OF BALI, INDONESIA     

P: 13APR2024 162273    11.0S  115.0E 4.0-5.4 ABAAA  So. of Indonesia           

P: 16APR2024 162078     9.0S  114.0E 4.0-5.4 BABAA  So. of Bali                

 

O: 11APR2024 19:18:15   9.6S  106.8E ML=4.3  EMSC   SOUTH OF JAVA, INDONESIA     

P: 14APR2024 162079     9.0S  106.0E 4.0-5.5 BAAAA  So. of Java                 

 

CENTRAL AND SOUTH AMERICA

 

O: 12APR2024 00:27:20   7.3S   74.9W ML=4.2  EMSC   NORTHERN PERU                

P:  4APR2024 161796     8.0S   74.0W 3.5-5.0 CAAAA  Brazil                     

P: 10APR2024 161796     9.0S   75.0W 3.5-5.4 ABAAA  Brazil                     

 

O: 11APR2024 13:59:04   8.3S   77.7W ML=4.0  EMSC   CENTRAL PERU                 

P:  7APR2024 161807     8.0S   78.0W 4.0-5.6 BAAAA  No. Peru                   

 

O: 11APR2024 22:27:30  11.3N   86.8W MB=4.9  EMSC   NEAR COAST OF NICARAGUA      

O: 11APR2024 20:21:07  10.9N   87.2W ML=4.0  EMSC   OFF COAST OF COSTA RICA

O: 11APR2024 20:31:34  11.0N   87.1W ML=4.3  EMSC   OFF COAST OF COSTA RICA

P:  9APR2024 161833    12.0N   86.0W 3.5-5.5 AAAAA  Nicaragua                  

 

O: 11APR2024 14:38:57  16.3N   93.1W ML=4.1  EMSC   CHIAPAS, MEXICO              

P: 12APR2024 162094    15.0N   92.0W 3.5-5.3 ABAAA  Guatemala                  

P: 13APR2024 162090    14.0N   93.0W 3.5-5.4 ACAAA  Chiapas, Mexico            

 

O: 12APR2024 04:35:31  16.5N   98.4W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 15APR2024 162105    17.0N  100.0W 3.5-5.3 BABAA  Oaxaca, Mexico             

 

O: 11APR2024 18:13:18  17.8N  101.6W ML=4.2  EMSC   GUERRERO, MEXICO             

P: 13APR2024 162099    18.0N  103.0W 3.5-5.3 AABAA  Michoacan, Mexico          

 

O: 11APR2024 10:48:56  18.4N   69.1W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P:  7APR2024 161839    18.0N   69.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 11APR2024 08:57:49  18.4N  106.1W ML=3.6  EMSC   OFF COAST OF JALISCO, MEXICO 

O: 11APR2024 07:29:08  18.5N  106.1W MB=4.5  EMSC   OFF COAST OF JALISCO, MEXICO 

P: 12APR2024 162092    19.0N  107.0W 3.5-5.5 AAAAA  Coast of Jalisco, Mexico   

 

O: 11APR2024 14:55:29  18.7N  103.1W ML=4.3  EMSC   MICHOACAN, MEXICO            

P: 13APR2024 162099    18.0N  103.0W 3.5-5.3 AAAAA  Michoacan, Mexico          

 

O: 11APR2024 09:59:20  19.0N  107.3W ML=3.9  EMSC   OFF COAST OF JALISCO, MEXICO 

O: 11APR2024 08:56:28  18.6N  106.0W ML=3.6  EMSC   OFF COAST OF JALISCO, MEXICO

O: 12APR2024 03:21:19  18.8N  107.4W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO

O: 11APR2024 07:49:47  18.9N  107.3W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO

P: 12APR2024 162092    19.0N  107.0W 3.5-5.5 AAAAA  Coast of Jalisco, Mexico   

 

O: 12APR2024 06:55:03  19.2N   69.8W ML=3.7  EMSC   DOMINICAN REPUBLIC           

P: 15APR2024 162111    20.0N   71.0W 3.0-4.8 BAAAA  Bahamas/No. Caribbean      

 

O: 11APR2024 07:59:42  19.8N  104.5W ML=3.3  EMSC   JALISCO, MEXICO

O: 11APR2024 19:59:31  19.7N  104.5W ML=3.4  EMSC   JALISCO, MEXICO              

P: 13APR2024 162099    18.0N  103.0W 3.5-5.3 AABAA  Michoacan, Mexico          

 

O: 11APR2024 07:02:46  20.3S   69.1W ML=4.0  EMSC   TARAPACA, CHILE              

O: 12APR2024 06:25:47  21.5S   68.5W ML=4.1  EMSC   ANTOFAGASTA, CHILE

P:  9APR2024 162027    20.0S   69.0W 4.0-5.6 AAAAA  So. Peru/Bolivia           

 

O: 12APR2024 03:37:31  25.6N  109.9W ML=4.1  EMSC   GULF OF CALIFORNIA           

P: 11APR2024 162114    24.0N  109.0W 3.5-4.9 ABAAA  Gulf of California         

 

O: 11APR2024 16:06:56  33.1S   70.3W ML=4.2  EMSC   VALPARAISO, CHILE            

P: 14APR2024 162294    34.0S   71.0W 4.0-5.9 BAAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O: 12APR2024 05:44:28  38.2N   38.6E ML=4.1  EMSC   EASTERN TURKEY               

P: 11APR2024 162182    39.0N   40.0E 3.5-5.1 AAAAA  Turkey                     

 

EMSC reported this earthquake of M 4.1 in Central Turkey was felt with intensity up to III in the area(s) of  Central Turkey in Camurlu, Malatya, Inonu, Bostanbasi.

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

O: 11APR2024 16:08:52  15.2S  167.4E MB=4.8  EMSC   VANUATU                      

P:  7APR2024 162017    16.0S  168.0E 4.0-5.4 BAAAA  Vanuatu Islands            

P: 17APR2024 162278    15.0S  167.0E 4.0-5.6 CAAAA  Vanuatu Islands            

 

O: 11APR2024 08:54:41  21.8S  179.4W MB=4.8  EMSC   FIJI REGION                  

P: 16APR2024 162290    21.0S  178.0W 4.0-5.9 BABAA  Tonga Islands              

 

O: 12APR2024 03:36:24  23.0S  177.2W MB=4.6  EMSC   SOUTH OF FIJI ISLANDS        

P: 14APR2024 162291    25.0S  180.0W 4.0-5.5 ABCAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 11APR2024 08:44:48  73.2N    6.6E MW=4.0  EMSC   GREENLAND SEA                

P: 15APR2024 162263    72.0N    0.0E 3.0-4.8 BBAAA  Norway                     

 

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 11APR2024 20:43:15  34.0S  178.6W MB=4.7  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 18APR2024 162303    34.0S  180.0W 4.0-5.6 CABAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

No earthquakes of M>=4 were located in Japan or the Kuril Islands today.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 11APR2024 13:44:21  33.0N  117.0W ML=2.0  EMSC   SAN DIEGO CTY URBAN AREA, CALI

P: 12APR2024 162169    33.4N  116.7W 2.5-4.6 AAAAA  So. California             

 

O: 11APR2024 18:35:15  36.4N  121.0W MD=2.3  EMSC   CENTRAL CALIFORNIA           

O: 12APR2024 05:47:26  36.6N  121.2W MD=2.2  EMSC   CENTRAL CALIFORNIA

P:  6APR2024 161864    36.4N  121.0W 2.5-4.6 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.2 in Central California was felt with intensity up to IV in the area(s) of  Central California in Berkeley.

 

O: 12APR2024 06:23:57  37.1N  121.5W MD=2.6  EMSC   NORTHERN CALIFORNIA          

P:  8APR2024 161865    37.1N  121.5W 2.5-4.5 AAAAA  Central California         

P: 13APR2024 162137    37.4N  121.8W 2.5-4.6 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in Central California was felt with intensity up to V in the area(s) of  Central California in Gilroy.

 

O: 12APR2024 00:20:29  37.5N  115.5W ML=2.0  EMSC   NEVADA                       

P: 19APR2024 162132    37.8N  115.8W 2.5-4.7 CAAAA  California/Nevada area     

 

O: 11APR2024 09:13:06  37.9N  122.2W MD=2.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 13APR2024 162137    37.9N  122.0W 2.5-4.8 AAAAA  Central California         

 

O: 11APR2024 23:00:37  39.5N  119.5W ML=2.2  EMSC   NEVADA                       

P: 12APR2024 162134    39.1N  119.6W 2.5-4.4 AAAAA  California/Nevada area     

 

O: 11APR2024 23:44:53  40.6N  121.9W MD=2.2  EMSC   NORTHERN CALIFORNIA          

P: 14APR2024 162211    40.4N  122.2W 2.5-4.9 BAAAA  Northern California        

 

ALASKA

 

O: 11APR2024 10:51:19  59.4N  152.7W ML=3.1  EMSC   SOUTHERN ALASKA              

O: 11APR2024 07:36:37  60.9N  152.8W ML=3.9  EMSC   SOUTHERN ALASKA              

P: 16APR2024 162253    60.2N  151.7W 3.2-4.9 BAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

No events of M>=2 were located in the northwestern U.S. or western Canada today.

 

ROCKY MOUNTAINS REGION

 

O: 12APR2024 03:14:19  31.7N  104.4W ML=2.2  EMSC   WESTERN TEXAS

O: 11APR2024 11:11:29  31.6N  104.5W ML=2.3  EMSC   WESTERN TEXAS                

P: 15APR2024 162163    31.2N  104.1W 2.0-3.9 BAAAA  SW U.S.A                   

 

O: 11APR2024 08:55:25  32.7N  100.7W ML=2.3  EMSC   WESTERN TEXAS                

O: 11APR2024 18:51:24  32.3N  101.8W ML=2.8  EMSC   WESTERN TEXAS

P: 11APR2024 162163    32.2N  101.1W 2.0-3.9 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 11APR2024 09:00:35  49.9N   66.3W ML=2.9  EMSC   GASPE PENINSULA, CANADA

O: 11APR2024 09:02:57  49.9N   66.3W ML=2.7  EMSC   GASPE PENINSULA, CANADA

P: 12APR2024 162206    49.8N   66.5W 2.0-4.0 AAAAA  New England                

 

NEIC reported an earthquake of M 1.7 in New Jersey was felt with intensity up to III in the area(s) of  New Jersey in Califon.

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

MODERATE QUAKES SHAKE XINJIANG, CHINA

 

EARTHQUAKE SUMMARY FOR APRIL 10, 2024

 

 

A series of moderate to moderately strong earthquakes in Southern Xinjiang, China today were the largest in the world.  NEIC reported this earthquake of M 5.4 in China was felt with intensity up to III in the area(s) of  China in Kuqa.

EMSC reported these earthquake with M 5.2 and M 5.4 were felt with moderate shaking in Kuqa Xian, China, in Kyrgyzstan, in Kaskelen,  in Koktobe, Belbulaq, Panfilov, Tuzdybastau, Besagash, Almaty, E'nergeticeskiy.   A foreshock of M 4.4 was also reported with moderate intensity in the same area as per EMSC. This area was at local solar midnight at the time of the new moon on April 8, and saw maximum tidal stresses at that time. This epicenter is located about 300 km east of the M 7.0 in Xinjiang, China of January 22, 2024 and may be a regional aftershock of that event. The only events of M>=5.4 in the past 35 years within about 200 km of today's epicenter occurred with M 5.4-5.6 on March 15, 1999; July 20, 2007 and November 1, 2011. Today's event is about 200 km north of an M 5.7 on January 29, 2023. At the time this summary noted:

 

 

"The strongest earthquake in the world today was an M 5.7 in Southern Xinjiang, China. NEIC reported it was felt with intensity IV in Kuche and Aksu. The only earthquake within about 200 km of this epicenter with M>=5.7 in the past 35 years was an M 5.8-5.9 on March 8, 2012." (January 29, 2023)

 

 

Forecasts 161925 and 162198 had expected this activity within about 50 km was likely in early April, 2024. This epicenter is located at 101 degrees from the M 7.1 in the Loyalty Islands of December 7, 2023 and at the seventh node (51 degrees) from recent strong earthquakes in the Talaud and Mindanao areas of the Philippines and may have been promoted by energy from those sources.

 

 

O: 10APR2024 14:56:17  42.0N   82.6E mw=5.4  ANSS   NW of Kuqa China

O: 10APR2024 10:57:39  41.9N   82.4E mb=5.0  ANSS   WNW of Kuqa China

O: 10APR2024 14:56:17  42.0N   82.6E Mw=5.4  EMSC   SOUTHERN XINJIANG, CHINA

O: 10APR2024 18:53:49  42.0N   82.6E mb=4.6  EMSC   SOUTHERN XINJIANG, CHINA

O: 10APR2024 10:57:39  41.9N   82.4E MB=5.0  EMSC   SOUTHERN XINJIANG, CHINA     

P:  3APR2024 161925    42.0N   79.0E 4.0-5.5 CABAA  Kirgizstan/Xinjiang         

P: 12APR2024 162198    42.0N   82.0E 4.0-5.8 AAAAA  Kirgizstan/Xinjiang        

 

The strongest earthquakes in the U.S. or Canada today were an M 4.7 in the eastern Andreanof Islands, Alaska and an M 4.8 in the Unimak Islands. The event in the western Andreanof Islands was reported felt with intensity II (by NEIC) in Atka, Alaska. The last earthquake of M>=4.7 in the area of today's Andreanof Island event occurred as an M 4.8 on February 12, 2024 and December 4, 2023. The last event of significantly larger magnitude in that area was an M 5.6 on October 12, 2023. At that time this summary noted:

 

"The strongest earthquake in the U.S. or Canada today was an M 5.6 in the western Fox Islands, Aleutians, Alaska. NEIC reported it was felt with intensity IV in Atka, Alaska. The last earthquake within about 150 km of this epicenter with equal of larger magnitude occurred on September 27, 2020 and October 26, 2019 with M 5.6 and 5.9.

 

It is likely that this event was promoted by strong tidal stresses associated with upcoming new moon and eclipse which passes over this epicenter early on  October 14. Further enhanced seismicity in the Aleutians is likely with the new moon and eclipse in the next several days. This could include a strong earthquake." (October 12, 2023)

 

Today's event in the Fox Islands occurred within minutes of local solar noon and was probably promoted by strong tidal stresses which maximize near this hour. Forecast 162232 had expected this event in the Fox Islands was likely around April 12 within about 25 km of today's event.

 

O: 10APR2024 23:41:13  52.1N  171.4W MB=4.7  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 12APR2024 162232    52.1N  171.8W 3.5-5.1 AAAAA  Andreanoff Isls, Aleutians 

 

The M 4.8 in the Unimak Island area is the strongest in that area since an M 4.8 on March 6, 2024. The last of significantly larger magnitude than M 4.8 was an M 5.0 on August 14, 2023. The largest earthquakes in the region in the past three years were events of M 5.1 on January 11, 2021 and September 9, 2021.

 

Forecast 162248 had expected today's event within about 100 km around April 12.

 

O: 10APR2024 08:28:52  53.6N  163.5W MB=4.8  EMSC   UNIMAK ISLAND REGION, ALASKA 

P: 12APR2024 162248    54.1N  164.4W 3.5-5.0 AAAAA  Unimak Islands, Aleutians  

 

A series of moderate earthquakes also occurred today in the region of Jalisco,

Mexico.  NEIC reported these earthquake of M 4.3 and M 4.5 in Jalisco, Mexico were felt with intensity up to III in the area(s) of  Jalisco, Mexico in Emiliano Zapata. EMSC reported moderate shaking at El Tuito, Mexico. This is the area where the maximum total eclipse in the world occurred on April 8.  The total eclipse of the sun reached its maximum in this area being in shadow for 4 minutes 22 seconds at this epicenter about 17:58 UT. It is likely this activity in Jalisco was promoted by tidal stresses associated with the total eclipse of the sun April 8. This area appears to be at a hair trigger and may see additional induced seismicity with the next full moon. An M 4.3 also hit further east in Michoacan, Mexico on April 11.

 

Forecast 162092 had expected these events were likely around April 12 and 17, 2024

within about 50 km.

 

O: 10APR2024 08:56:55  18.2N  105.9W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 09:03:36  18.2N  106.0W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 10:02:18  18.2N  106.1W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 10:04:30  18.2N  106.1W ML=3.7  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 10:12:22  18.2N  106.1W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 10:56:24  18.3N  106.1W ML=3.7  EMSC   OFF COAST OF JALISCO, MEXICO

O: 11APR2024 06:37:33  18.5N  106.2W ML=3.6  EMSC   OFF COAST OF JALISCO, MEXICO

O: 11APR2024 04:52:12  18.9N  107.4W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO

O: 11APR2024 05:24:49  18.9N  107.4W ML=3.9  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 09:01:27  18.1N  106.1W ML=3.7  EMSC   OFF COAST OF JALISCO, MEXICO 

P: 12APR2024 162092    19.0N  107.0W 3.5-5.5 AAAAA  Coast of Jalisco, Mexico   

 

O: 10APR2024 08:18:14  19.7N  104.5W ML=4.2  EMSC   JALISCO, MEXICO

O: 10APR2024 09:12:13  19.7N  104.5W ML=3.4  EMSC   JALISCO, MEXICO

O: 10APR2024 22:58:19  19.8N  104.2W ML=3.4  EMSC   JALISCO, MEXICO

O: 10APR2024 10:37:18  19.4N  105.1W ML=3.6  EMSC   OFFSHORE JALISCO, MEXICO     

P: 17APR2024 162092    19.0N  106.0W 3.5-5.5 CAAAA  Coast of Jalisco, Mexico   

 

 

A moderate earthquake of M 4.4 occurred in Western Texas today. NEIC reported it was felt with intensity up to VI in Stanton, Texas. An aftershock of M 2.7 was also reported felt with intensity IV in Stanton. This earthquake of M 4.3  is the strongest within about 100 km of this epicenter in more than a year. An M 4.7 hit about 100 km eawt of this on February 16, 2023. Larger earthquakes of M 5.4 on December 16 2022; and M 4.5 on December 27, 2021 have also hit the area in the past 10 years - since an M 4.3 on September 11, 2011.  The total eclipse of the sun passed over this epicenter on April 8 and was at maximum eclipse at 18:32 UT on April 8, 2024. Today's M 4.4 occurred at 18:46 UT within several minutes of local solar noon and was probably promoted by high tidal stresses. It is also likely that today's event in Texas was promoted by the strong tidal stresses associated with the solar eclipse.

 

Forecast 162163 had expected this activity within about 25 km was likely around

April 11.

 

O: 11APR2024 00:13:52  32.3N  101.8W ml=2.3  ANSS   N of Stanton Texas

O: 10APR2024 21:40:03  32.3N  101.8W ML=2.7  EMSC   WESTERN TEXAS

O: 11APR2024 00:13:52  32.3N  101.8W ML=2.3  EMSC   WESTERN TEXAS

O: 10APR2024 21:40:03  32.3N  101.8W ml=2.7  ANSS   N of Stanton Texas

O: 10APR2024 20:49:37  32.3N  101.8W ml=1.9  ANSS   N of Stanton Texas

O: 10APR2024 19:30:16  32.3N  101.8W ml=1.9  ANSS   N of Stanton Texas

O: 10APR2024 18:46:45  32.3N  101.8W ml=4.4  ANSS   N of Stanton Texas

O: 10APR2024 18:46:44  32.3N  101.8W MW=4.3  EMSC   WESTERN TEXAS                

O: 10APR2024 18:46:44  32.3N  101.8W MW=4.4  ANSS   WESTERN TEXAS                

P: 11APR2024 162163    32.2N  101.1W 2.0-3.9 AAAAA  SW U.S.A                   

 

EMSC reported earthquakes of M 2.9 and 2.7 on April 11, 2024 in the Gaspe Peninsula, near Sept-Iles, Quebec. The total eclipse of the sun was viewable in this area around 19:36 UT on April 8. The last earthquake according to NEIC in the Gaspe Peninsula of Quebec within about 150 km of this epicenter with M>=3 was an M 3.4 on November 17, 2017. Smaller events were also observed in the Saint Lawrence Seaway in the past several days but these may not be related to eclipse as the area is active on a weekly basis. Forecasts 162206 and 161927 had expected these events within about 25 km were likely around April 12.

 

O: 11APR2024 09:00:35  49.9N   66.3W MB=2.9  ECAN OF SEPT-├ÄLES, QC, FELT  

O: 11APR2024 09:02:57  49.9N   66.3W MB=2.7  ECAN OF SEPT-├ÄLES, QC              

P: 12APR2024 162206    49.8N   66.5W 2.0-4.0 AAAAA  New England                

 

O: 10APR2024 07:27:03  47.4N   70.4W MB=0.3  ECAN OF BAIE-SAINT-PAUL, QC   

O: 10APR2024 00:10:11  47.4N   70.4W MB=2.2  ECAN OF BAIE-SAINT-PAUL, QC         

P:  8APR2024 161927    47.0N   69.0W 2.0-4.1 AAAAA  Maine                      

P: 14APR2024 162206    47.3N   70.5W 2.0-4.0 BAAAA  New England                

 

EFFECTS OF SOLAR ECLIPSE OF APRIL 8 ON SEISMICITY

 

The solar eclipse and new moon of April 8 was described with expected associated seismicity in earlier issues of this summary as:

 

"The new moon  arrived on April 8, 2024 at 18:21 UT. This involved a total eclipse of the sun which  began in western Mexico and extend through Texas, the east-Central U.S. eastern Canada and the northeastern U.S. States of Emergency have been declared for much of the eclipse path due to expected migrations of people to view the total eclipse.  Longitudes which are at local solar noon at this time are near 100 West while those at local solar midnight area near 80 East. These include areas of central North America and the East Pacific in the west and central Asia including China, India, Nepal in the East. These areas are most likely to see moderate tidal triggering at this time. Tidal enhancement of regional seismicity is possible in many areas, however, a major earthquake associated with this new moon is considered possible in the next week by this report. Minor to moderate seismic enhancement along the path through the U.S. Mexico and Canada is likely in the next week." (April 4-10, 2024)

 

Now that several days have passed it is time to evaluate the effects of the tidal stresses associated with this alignment on seismicity in North America. This summary has noted some of these in previous issues but this is a more thorough review of earthquakes which occurred subsequent to and near the path of the total eclipse. There were eight areas where significant local earthquakes occurred following the eclipse. These included events in Southern Texas (M 2.8); western Texas (M 4.4, 2.8, 2.6); Arkansas and New Madrid, Missouri (M 2.5, 2.8);

Jalisco, Mexico (M 4-4.5 and a series of M 3.5-4.0); and in Canada in Ontario (M 3.9); Quebec in the Gaspe Peninsula (M 2.2, 2.5); and the Saint Lawrence Seaway.

Following is a brief summary of these events and their relation to the eclipse.

 

MEXICO

 

A series of moderate earthquakes also occurred today in the region of Jalisco,

Mexico.  NEIC reported these earthquake of M 4.3 and M 4.5 in Jalisco, Mexico were felt with intensity up to III in the area(s) of  Jalisco, Mexico in Emiliano Zapata. EMSC reported moderate shaking at El Tuito, Mexico. This is the area where the maximum total eclipse in the world occurred on April 8.  The total eclipse of the sun reached its maximum in this area being in shadow for 4 minutes 22 seconds at this epicenter about 17:58 UT. It is likely this activity in Jalisco was promoted by tidal stresses associated with the total eclipse of the sun April 8. This area appears to be at a hair trigger and may see additional induced seismicity with the next full moon. An M 4.3 also hit further east in Michoacan, Mexico on April 11.

 

 

TEXAS

 

A moderate earthquake of M 4.4 occurred in Western Texas today. NEIC reported it was felt with intensity up to VI in Stanton, Texas. An aftershock of M 2.7 was also reported felt with intensity IV in Stanton. This earthquake of M 4.3  is the strongest within about 100 km of this epicenter in more than a year. An M 4.7 hit about 100 km eawt of this on February 16, 2023. Larger earthquakes of M 5.4 on December 16 2022; and M 4.5 on December 27, 2021 have also hit the area in the past 10 years - since an M 4.3 on September 11, 2011. The total eclipse of the sun passed over this epicenter on April 8 and was at maximum eclipse at 18:32 UT on April 8, 2024. Today's M 4.3 occurred at 18:46 UT within several minutes of local solar noon and was probably promoted by high tidal stresses. It is also likely that today's event in Texas was promoted by the strong tidal stresses associated with the solar eclipse.

 

An M 2.8 also occurred in Texas on April 15, 2024 in the Falls City area of Southern Texas. This area has been active in recent months but the last earthquake of M>2.8 in the area was an M 3.4 on February 23, 2024.  The total eclipse of the sun was visible near this epicenter in southern Texas on April 8, 2024 at about 18:32-18:33 UT for 4 minutes 27 seconds.

 

QUEBEC, MAINE

 

Another area which saw the total eclipse on April 8 was northern Maine and southern Quebec, Canada. Two minor earthquakes were located in the St. Lawrence

Seaway are of Quebec by Earthquakes Canada on April 10, 2024 along the path of the total eclipse which was observed in the area around 19:32 UT. These events of M 2.2 and 0.3 were probably promoted by tidal stresses associated with the solar eclipse.

 

An M 3.6-3.9 was also reported in the totality path in southern Quebec on April 7 at local solar midnight. At the time this summary noted:

 

"A light M 3.6-3.9 also lightly shook areas of Quebec, near Maniwaki, Canada today. The last earthquake in this area of Quebec with M>=3.9 reported by NEIC was an M 3.9 on May 9, 2020 and prior to that an M 4.1 on October 1, 2007." (April 7-8, 2024)

 

The total eclipse was viewable in this area around 19:30 UT April 8.

 

 

EMSC also reported earthquakes of M 2.9 and 2.7 on April 11, 2024 in the Gaspe Peninsula, near Sept-Iles, Quebec. The total eclipse of the sun was viewable in this area around 19:36 UT on April 8. The last earthquake according to NEIC in the Gaspe Peninsula of Quebec within about 150 km of this epicenter with M>=3 was an M 3.4 on November 17, 2017. Smaller events were also observed in the Saint Lawrence Seaway in the past several days but these may not be related to eclipse as the area is  active on a weekly basis.

 

MISSOURI AND ARKANSAS

 

In addition to these events in the U.S. and Canada which were promoted by the total eclipse of the sun on April 8, an M 2.3 was reported by NEIC to have occurred in Pleasant Plains, Arkansas within minutes of local solar midnight on April 9, 2024. The total eclipse of the sun was visible at this epicenter for more than 4 minutes around 18:54 UT on April 8 and probably helped this subsequent earthquake in Arkansas. The last earthquake  within about 100 km of this epicenter of significantly larger magnitude than today's occurred as an M 2.8 on January 23, 2021. An earthquake of M 2.4 and an aftershock of M 2.3 hit the area about 150 km northwest of this on January 7, 2024. At the time this summary noted:

 

An M 2.8 was also recorded on April 12, 2024 in the New Madrid region of Missouri. The total eclipse was seen at this epicenter at 19:00 UT on April 8 lasting 4 minutes and 11 seconds. This is a seismic area but the last earthquake of M>=2.8 in this area south of Saint Louis, Missouri within about 100 km of today's epicenter occurred as an M 3.3  half a year ago on December 21, 2023.

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 10APR2024 11:22:59  24.0N  121.8E mb=4.6  EMSC   TAIWAN

O: 10APR2024 16:27:07  24.2N  121.8E ML=4.3  EMSC   TAIWAN

O: 10APR2024 16:55:12  24.2N  121.8E Mw=4.5  EMSC   TAIWAN

O: 11APR2024 00:53:27  24.2N  121.7E ML=4.1  EMSC   TAIWAN

O: 10APR2024 09:09:44  23.9N  121.7E ML=4.6  EMSC   TAIWAN                       

P: 13APR2024 162126    24.0N  121.0E 4.0-5.4 BAAAA  Taiwan                     

 

NEIC reported moderate earthquakes including those of of M 4.6 in Taiwan was felt with intensity up to III in the area(s) of  Taiwan in Hualien City.

 

O: 10APR2024 14:56:17  42.0N   82.6E mw=5.4  ANSS   NW of Kuqa China

O: 10APR2024 10:57:39  41.9N   82.4E mb=5.0  ANSS   WNW of Kuqa China

O: 10APR2024 14:56:17  42.0N   82.6E Mw=5.4  EMSC   SOUTHERN XINJIANG, CHINA

O: 10APR2024 18:53:49  42.0N   82.6E mb=4.6  EMSC   SOUTHERN XINJIANG, CHINA

O: 10APR2024 10:57:39  41.9N   82.4E MB=5.0  EMSC   SOUTHERN XINJIANG, CHINA     

P:  3APR2024 161925    42.0N   79.0E 4.0-5.5 CABAA  Kirgizstan/Xinjiang        

P: 12APR2024 162198    42.0N   82.0E 4.0-5.8 AAAAA  Kirgizstan/Xinjiang        

 

INDONESIA AND PHILIPPINES

 

O: 10APR2024 16:41:27   0.0N  124.5E ML=4.1  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  6APR2024 161791     1.0N  124.0E 4.0-5.5 BAAAA  Mindanao, Philippines      

 

O: 10APR2024 12:38:40   3.4N   96.5E ML=4.2  EMSC   NORTHERN SUMATRA, INDONESIA  

P:  9APR2024 161792     2.0N   93.0E 4.0-5.4 ABCAA  Nicobar Islands            

P: 13APR2024 162059     4.0N   93.0E 4.0-5.5 BACAA  Nicobar Islands            

 

O: 10APR2024 14:06:08   4.4N  126.9E MB=4.8  EMSC   KEPULAUAN TALAUD, INDONESIA  

P:  8APR2024 161790     5.0N  128.0E 4.0-5.4 AAAAA  Halmahera                  

P: 11APR2024 162055     3.0N  126.0E 4.0-5.4 ABAAA  Halmahera                   

 

O: 11APR2024 01:47:56   5.0S  102.9E ML=4.0  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 14APR2024 162081     6.0S  102.0E 4.0-5.5 BAAAA  So. of Sumatera            

 

O: 10APR2024 17:24:06   5.9N   93.4E ML=4.0  EMSC   OFF W COAST OF NORTHERN

O: 10APR2024 17:26:11   5.9N   92.9E mb=4.9  EMSC   OFF W COAST OF NORTHERN

O: 10APR2024 19:26:07   6.2N   92.7E MB=4.6  EMSC   NICOBAR ISLANDS, INDIA REGION

P:  6APR2024 161792     6.0N   93.0E 4.0-5.5 BAAAA  Nicobar Islands            

 

O: 11APR2024 03:33:58   7.6N  126.2E MW=5.2  EMSC   MINDANAO, PHILIPPINES        

P: 11APR2024 162056     8.0N  125.0E 4.0-5.4 AAAAA  Central Philippines        

 

NEIC reported this earthquake of M 5.2 in Mindanao, Philippines was felt with intensity up to VI in the area(s) of  Mindanao, Philippines in Bantacan.

 

O: 10APR2024 16:20:21  11.9N  125.9E MW=5.2  EMSC   SAMAR, PHILIPPINES           

P:  5APR2024 161828    11.0N  125.0E 3.5-5.1 BAAAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 5.2 in Samar, Philippines was felt with intensity up to III in the area(s) of  Samar, Philippines in Dolores.

PHIVOLCS reported intensity IV in Dolores, City of Borongan, San Julian, Sulat and Taft, Eastern Samar and III in Arteche, Balangkayan, Can-Avid, General MacArthur, Hernani, Llorente, Maslog, Maydolong, Oras, Salcedo and San Policarpo, Eastern Samar; Gamay and Lapining, Northern Samar and Calbiga and Pinabacdar, Samar with lighter shakin in Leyte.

 

 

CENTRAL AND SOUTH AMERICA

 

O: 11APR2024 04:20:39   1.9S   80.1W MB=4.6  EMSC   NEAR COAST OF ECUADOR        

P:  6APR2024 161799     1.0S   81.0W 4.0-5.4 BAAAA  Ecuador                    

 

NEIC reported this earthquake of M 4.6 in Ecuador was felt with intensity up to IV in the area(s) of  Ecuador in Lomas de Sargentillo.

EMSC reported moderate to sharp jolts in Ecuador at Samborondon, Guayaquil. 

 

O: 10APR2024 18:33:30   9.0N   85.0W ML=4.0  EMSC   OFF COAST OF COSTA RICA      

P:  6APR2024 161789     9.0N   85.0W 3.5-4.9 BAAAA  Costa Rica                 

 

O: 10APR2024 21:07:01  15.4N   95.3W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO      

P:  8APR2024 161819    15.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 11APR2024 06:42:24  16.4N   93.9W ML=4.0  EMSC   CHIAPAS, MEXICO

O: 11APR2024 04:16:31  15.7N   94.0W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 16APR2024 162090    15.0N   94.0W 3.5-5.5 BAAAA  Chiapas, Mexico            

 

O: 10APR2024 19:52:24  16.6S   73.8W ML=4.0  EMSC   NEAR COAST OF SOUTHERN PERU  

P:  9APR2024 162011    17.0S   73.0W 4.0-5.9 AAAAA  So. Peru/Bolivia           

 

O: 10APR2024 09:27:23  17.2N  100.1W ML=4.2  EMSC   GUERRERO, MEXICO             

P: 15APR2024 162105    17.0N  100.0W 3.5-5.3 BAAAA  Oaxaca, Mexico             

 

O: 10APR2024 15:33:43  17.2S   68.5W MW=5.0  EMSC   LA PAZ, BOLIVIA              

P:  7APR2024 162011    17.0S   69.0W 4.0-5.4 BAAAA  So. Peru/Bolivia           

 

O: 10APR2024 11:10:12  18.2N   68.1W MD=3.2  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P: 13APR2024 162106    18.0N   67.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 11APR2024 04:01:01  21.3S   69.9W mb=4.8  EMSC   TARAPACA, CHILE

O: 11APR2024 06:29:24  21.8S   68.9W ML=4.0  EMSC   ANTOFAGASTA, CHILE

O: 10APR2024 17:02:51  18.2S   69.6W MW=4.3  EMSC   TARAPACA, CHILE              

P:  9APR2024 162027    20.0S   69.0W 4.0-5.6 ABAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 4.8 in Northern Chile was felt with intensity up to III in the area(s) of  Northern Chile in Tocopilla.

 

O: 10APR2024 14:57:02  19.0N   65.5W MD=3.3  EMSC   PUERTO RICO REGION           

P: 13APR2024 162110    20.0N   64.0W 3.0-4.4 BABAA  Bahamas/No. Caribbean      

 

O: 11APR2024 00:37:12  19.3N   70.4W ML=3.2  EMSC   DOMINICAN REPUBLIC           

P: 15APR2024 162111    20.0N   71.0W 3.0-4.8 BAAAA  Bahamas/No. Caribbean      

 

O: 11APR2024 07:02:47  20.4S   69.1W ML=4.0  EMSC   TARAPACA, CHILE              

P:  9APR2024 162020    21.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

P:  9APR2024 162027    20.0S   69.0W 4.0-5.6 AAAAA  So. Peru/Bolivia           

 

O: 11APR2024 05:02:36  31.9S   68.4W MB=4.3  EMSC   SAN JUAN, ARGENTINA          

P:  7APR2024 162033    31.0S   68.0W 4.0-5.6 BAAAA  Central Chile              

 

O: 10APR2024 08:56:55  18.2N  105.9W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 09:03:36  18.2N  106.0W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 10:02:18  18.2N  106.1W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 10:04:30  18.2N  106.1W ML=3.7  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 10:12:22  18.2N  106.1W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 10:56:24  18.3N  106.1W ML=3.7  EMSC   OFF COAST OF JALISCO, MEXICO

O: 11APR2024 06:37:33  18.5N  106.2W ML=3.6  EMSC   OFF COAST OF JALISCO, MEXICO

O: 11APR2024 04:52:12  18.9N  107.4W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO

O: 11APR2024 05:24:49  18.9N  107.4W ML=3.9  EMSC   OFF COAST OF JALISCO, MEXICO

O: 10APR2024 09:01:27  18.1N  106.1W ML=3.7  EMSC   OFF COAST OF JALISCO, MEXICO 

P: 12APR2024 162092    19.0N  107.0W 3.5-5.5 AAAAA  Coast of Jalisco, Mexico   

 

O: 10APR2024 08:18:14  19.7N  104.5W ML=4.2  EMSC   JALISCO, MEXICO

O: 10APR2024 09:12:13  19.7N  104.5W ML=3.4  EMSC   JALISCO, MEXICO

O: 10APR2024 22:58:19  19.8N  104.2W ML=3.4  EMSC   JALISCO, MEXICO

O: 10APR2024 10:37:18  19.4N  105.1W ML=3.6  EMSC   OFFSHORE JALISCO, MEXICO     

P: 17APR2024 162092    19.0N  106.0W 3.5-5.5 CAAAA  Coast of Jalisco, Mexico   

 

AFRICA AND EUROPE

 

O: 10APR2024 22:31:16  44.8N   39.9E MB=4.4  EMSC   CAUCASUS REGION, RUSSIA      

P: 11APR2024 162182    39.0N   40.0E 3.5-5.1 ACAAA  Turkey                     

P: 13APR2024 162191    43.0N   44.0E 3.5-5.4 BBCAA  Caucasus/Caspian Sea       

 

EMSC reported this earthquake of M 4.4 in the Russian Caucasus was felt with intensity up to III in the area(s) of  the Russian Caucasus in Yuzhnyy, Khanskaya, Maykop, Kuzhorskoye, Yaroslavskaya, Mezmay, Krasnodar, Mamayskiy Pereval, Russia. 

 

O: 10APR2024 22:39:20  63.3N   24.3W ML=3.1  EMSC   ICELAND REGION

O: 10APR2024 22:40:21  63.3N   24.3W ML=3.0  EMSC   ICELAND REGION

O: 10APR2024 22:33:26  63.3N   24.3W ML=3.0  EMSC   ICELAND REGION               

P:  5APR2024 161990    63.0N   23.0W 3.0-4.6 BAAAA  Iceland area               

 

O: 10APR2024 20:09:05  64.6N   17.4W ML=3.0  EMSC   ICELAND                      

P:  8APR2024 161990    65.0N   17.0W 3.0-4.9 AAAAA  Iceland area               

 

SOUTHWEST PACIFIC

 

O: 10APR2024 16:09:03  19.1S  175.3W MB=4.6  EMSC   TONGA                        

P:  9APR2024 162028    20.0S  175.0W 4.0-5.6 AAAAA  Tonga Islands              

 

No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.

 

OCEAN RIDGES

 

O: 10APR2024 07:57:43  38.9S   47.2E MW=4.8  EMSC   SOUTHWEST INDIAN RIDGE       

P: 12APR2024 162305    41.0S   43.0E 4.0-5.6 ABCAA  So. Indian Ocean           

 

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 11APR2024 03:52:36  45.9S  169.1E ML=4.2  EMSC   SOUTH ISLAND OF NEW ZEALAND  

P:  9APR2024 162042    45.0S  167.0E 3.0-5.0 AABAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

O: 10APR2024 06:19:20  29.1N  128.5E MB=4.6  EMSC   NORTHWEST OF RYUKYU ISLANDS  

P:  4APR2024 161854    29.0N  129.0E 4.0-5.5 CAAAA  Ryukyu Islands             

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 10APR2024 13:52:13  32.6N  115.9W ML=2.1  EMSC   BAJA CALIFORNIA, MEXICO      

P: 13APR2024 162168    32.6N  116.1W 2.5-4.8 BAAAA  So. California             

 

O: 10APR2024 19:42:06  33.9N  117.5W ML=2.0  EMSC   GREATER LOS ANGELES AREA, CALI

P: 13APR2024 162170    33.7N  117.5W 2.5-4.5 BAAAA  So. California             

 

O: 10APR2024 11:22:51  35.5N  120.1W MD=2.4  EMSC   CENTRAL CALIFORNIA           

P: 13APR2024 162135    36.2N  120.2W 2.5-4.6 BAAAA  Central California         

 

O: 10APR2024 18:52:29  36.9N  121.6W MD=2.2  EMSC   CENTRAL CALIFORNIA           

P:  8APR2024 161865    37.1N  121.5W 2.5-4.5 AAAAA  Central California         

 

O: 10APR2024 08:09:36  37.3N  121.6W ML=3.0  EMSC   NORTHERN CALIFORNIA          

P:  8APR2024 161865    37.1N  121.5W 2.5-4.5 AAAAA  Central California         

 

NEIC reported this earthquake of M  3.0 south of San Francisco, California  was felt with intensity up to III in the area(s) of  San Francisco, California in Morgan Hill.

EMSC reported moderate shaking in Morgan Hill, California.

 

O: 10APR2024 19:55:10  37.8N  122.6W MD=2.3  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 13APR2024 162137    37.9N  122.0W 2.5-4.8 BAAAA  Central California         

 

O: 10APR2024 08:30:28  38.8N  122.8W MD=2.2  EMSC   NORTHERN CALIFORNIA          

P: 12APR2024 162138    38.5N  122.7W 2.5-4.6 AAAAA  Central California         

 

ALASKA

 

O: 10APR2024 23:41:13  52.1N  171.4W MB=4.7  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 12APR2024 162232    52.1N  171.8W 3.5-5.1 AAAAA  Andreanoff Isls, Aleutians 

 

O: 10APR2024 08:28:52  53.6N  163.5W MB=4.8  EMSC   UNIMAK ISLAND REGION, ALASKA 

P: 12APR2024 162248    54.1N  164.4W 3.5-5.0 AAAAA  Unimak Islands, Aleutians  

 

O: 10APR2024 18:34:03  56.2N  149.2W ML=3.1  EMSC   GULF OF ALASKA               

P: 15APR2024 162260    55.0N  149.0W 3.0-4.8 BBAAA  Gulf of  Alaska            

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

No events of M>=2 were located in the northwestern U.S. or western Canada today.

 

ROCKY MOUNTAINS REGION

 

O: 10APR2024 08:13:04  31.6N  104.2W ML=2.1  EMSC   WESTERN TEXAS

O: 11APR2024 00:39:35  31.7N  104.2W ML=2.1  EMSC   WESTERN TEXAS

O: 10APR2024 20:57:11  31.4N  103.9W ML=2.0  EMSC   WESTERN TEXAS                

P:  7APR2024 161891    31.6N  103.6W 2.0-4.4 BAAAA  SW U.S.A                   

 

O: 11APR2024 00:13:52  32.3N  101.8W ml=2.3  ANSS   N of Stanton Texas

O: 10APR2024 21:40:03  32.3N  101.8W ML=2.7  EMSC   WESTERN TEXAS

O: 11APR2024 00:13:52  32.3N  101.8W ML=2.3  EMSC   WESTERN TEXAS

O: 10APR2024 21:40:03  32.3N  101.8W ml=2.7  ANSS   N of Stanton Texas

O: 10APR2024 20:49:37  32.3N  101.8W ml=1.9  ANSS   N of Stanton Texas

O: 10APR2024 19:30:16  32.3N  101.8W ml=1.9  ANSS   N of Stanton Texas

O: 10APR2024 18:46:45  32.3N  101.8W ml=4.4  ANSS   N of Stanton Texas

O: 10APR2024 18:46:44  32.3N  101.8W MW=4.3  EMSC   WESTERN TEXAS                

O: 10APR2024 18:46:44  32.3N  101.8W MW=4.4  ANSS   WESTERN TEXAS                 

P: 11APR2024 162163    32.2N  101.1W 2.0-3.9 AAAAA  SW U.S.A                   

 

 

EASTERN U.S./CANADA

 

 

O: 11APR2024 09:00:35  49.9N   66.3W MB=2.9  ECAN OF SEPT-├ÄLES, QC, FELT  

O: 11APR2024 09:02:57  49.9N   66.3W MB=2.7  ECAN OF SEPT-├ÄLES, QC              

P: 12APR2024 162206    49.8N   66.5W 2.0-4.0 AAAAA  New England                

 

O: 10APR2024 07:27:03  47.4N   70.4W MB=0.3  ECAN OF BAIE-SAINT-PAUL, QC   

O: 10APR2024 00:10:11  47.4N   70.4W MB=2.2  ECAN OF BAIE-SAINT-PAUL, QC          

P:  8APR2024 161927    47.0N   69.0W 2.0-4.1 AAAAA  Maine                      

P: 14APR2024 162206    47.3N   70.5W 2.0-4.0 BAAAA  New England                

 

O: 10APR2024 14:16:58  35.3N   84.4W MD=1.9  ANSS   TELLICO PLAINS TENNESSEE     

P:  8APR2024 161876    35.0N   83.0W 2.0-4.4 AAAAA  Kentucky/Tennessee/NC      

P: 13APR2024 162178    34.0N   85.0W 2.0-4.5 BBAAA  Southeast U.S.             

 

O: 10APR2024 14:22:52  40.7N   74.7W ML=2.6  EMSC   NEW JERSEY                   

O: 11APR2024 00:05:14  40.7N   74.7W ml=1.9  ANSS   Gladstone New Jersey

O: 10APR2024 22:21:49  40.7N   74.8W ml=1.3  ANSS   Califon New Jersey

O: 10APR2024 14:22:52  40.7N   74.7W mb=2.6  ANSS   Gladstone New Jersey

P:  8APR2024 161936    40.0N   74.0W 2.0-4.1 AAAAA  New York State             

 

NEIC reported this earthquake of M 2.6 in New Jersey was felt with intensity up to V in the area(s) of  New Jersey in Gladstone. Regional Press reported shaking also occurred in New York City.

EMSC reported moderate shaking in New Jersey and New York with an earthquake

noise at White House Station, Mendham, Long Valley, Asbury, and Sparta among others.

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

STRONG EARTHQUAKE SHAKES TALAUD ISLANDS

 

EARTHQUAKE SUMMARY FOR APRIL 9, 2024

 

The strongest earthquake in the world today was an M 6.6 in Talaud, Indonesia. NEIC reported it was felt with intensity up to IV in Tobelo, Indonesia. PHIVOLCS  reported this earthquake of M  6.5 in Talaud, Indonesia was felt with intensity up to II in the area(s) of   Saranagani, City of Davao at Malungon and Glan.

BMG reported intensity IV in Ibu, Halmahera, Barat, Maluu; III in Kat Sangihe, Talaud, Siau, Halmeahera, Pulau Morotai, Tidore and Ternate among others, This is the strongest earthquake in the Molucca Sea and Talaud within about 200 km of this epicenter since an M 7.0 on January 18, 2023 and may be an aftershock of that event. At the time this summary noted:

 

"The strongest earthquake in the world today was an M 7.0-7.2 in the Molucca Sea, Indonesia. … While BMG did not expect a tsunami with this earthquake, PTWC suggested a minor tsunami is possible with this earthquake and tsunami warnings were made by BMG. In Manado the capital of North Sulawesi and in Melonguane the  quake was felt strongly and forced many people to run from buildings. Residents reported feeling disoriented and dizzy in the area of Gorontalo and that it lasted a long time. The earthquake was also felt in the Maluku Islands. No major damage has been reported at this time. This earthquake occurred at the end of a C3.0 class solar flare (see flare listing below) near local solar noon and may have been promoted by tidal and/or SFE.

 

...

 

The last strong earthquake in the Molucca Sea occurred with M 6.3 on July 10, 2021." (January 18, 2023)

 

Forecast 162055 had expected today's event within about 100 km was likely around April 11, 2024. This epicenter is at the seventh node (51.4 degrees) from the M 6.7 in Fiji of March 27, 2024 and may have been promoted by energy from that source.

 

O: 09APR2024 17:58:13   2.8N  127.2E ML=4.0  EMSC   MOLUCCA SEA

O: 09APR2024 09:48:01   2.7N  127.1E mw=6.6  ANSS   NW of Tobelo Indonesia

O:  9APR2024 09:48:02   2.7N  127.1E MW=6.4  EMSC   MOLUCCA SEA                  

P: 11APR2024 162055     3.0N  126.0E 4.0-5.4 AAAAA  Halmahera                  

 

The strongest earthquake in the U.S. or Canada today was an M 4.9 in the Fox Islands, Aleutians, Alaska. NEIC reported it was felt with intensity up to III in Unalaska. This earthquake, along with an M 3.6 in the Alaska Peninsula, occurred near local solar noon and were probably promoted by tidal stresses which maximize near this hour. The last earthquake with M>=4.9 in the Fox Islands was an M 5.6 on November 28, 2023, and like today's event occurred with an M 6.5 in Papua New Guinea. At the time this summary noted:

 

 

"The full moon arrived on November 27. It was accompanied by a strong M 6.5 in

New Guinea and an M 5.6 in the Fox Islands, Aleutians, Alaska - events which were probably promoted by strong tidal stresses associated with this full moon as noted in this and previous issues of this summary" (November 28, 2023)

 

and

 

"The strongest earthquake in the U.S. or Canada today was an M 5.5-5.6 in the area of the Fox Islands, Aleutians, Alaska. News sources indicated the quake was felt throughout the Fox Islands and the Aleutians. No tsunami was expected or observed with this event. The mainshock occurred near local solar midnight, a time when tidal stresses maximize and may have been promoted by those stresses. The last earthquake in the Fox Islands within about 200 km of this epicenter with M>=5.6 occurred on January 22, 2022, an aftershock of an M 6.8 on January 11, 2022. An event of slightly smaller size (M 5.5) occurred a year ago on November 21, 2022." (November 28, 2023)

 

Forecast 162237 had expected today's event within about 100 km of this epicenter was likely around April 12, 2024. This epicenter is at the fifth node (72 degrees) from recent major earthquakes in Mindanao and Talaud Islands (including today's) and at the sixth node (60 degrees) from the M 7.4 in Taiwan of April 2, 2024 and may have been promoted by energy from these sources.

 

 

O: 10APR2024 01:55:15  53.1N  166.8W MB=4.9  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 12APR2024 162237    53.7N  167.0W 3.5-5.0 AAAAA  Fox Islands, Aleutians     

 

O:  9APR2024 23:03:03  54.2N  162.6W MB=3.6  EMSC   ALASKA PENINSULA             

P:  7APR2024 161983    54.5N  163.5W 3.5-5.1 AAAAA  Unimak Islands, Aleutians  

 

 

NEIC reported an earthquake of M 4.3 in Jalisco, Mexico was felt with intensity up to III in the area(s) of  Jalisco, Mexico in Emiliano Zapata.  The total eclipse of the sun reached its maximum in this area being in shadow for 4 minutes 22 seconds at this epicenter about 17:58 UT. It is likely this activity in Jalisco was promoted by tidal stresses associated with the total eclipse of the sun April 8. The last earthquake of significantly larger magnitude than today's event within about 200 km of today's event in Jalisco occurred as an M 6.0 on December 22, 2021. At that time this summary noted:

 

 

"The strongest earthquake in the world today was an M 6.0 off the coast of Jalisco, western Mexico. NEIC reported it was felt with intensity II-III in Jalisco, Mexico at Tomatlan, Cihiuatlan, Puerto Vallarta, and in Bucerias Nayarti and Colima, Mexico. This is the strongest earthquake in Jalsico, Mexico within about 200 km of this epicenter since an M 6.6  on January 21, 2016 and prior to that an M 6.2 on February 22, 2105." (December 22, 2021)

 

Forecasts 161820, 161845 and 162092 had expected enhanced seismicity within about 50 km of these events with the eclipse in early April. This epicenter in Jalisco, Mexico is at the third node from recent strong earthquakes (including today's) in Mindanao and the Talaud Islands and the M 7.0 in Xinjiang, China of January 22, 2024 and may have been promoted by energy from those sources.

 

O: 09APR2024 08:15:24  18.9N  107.5W ML=3.7  EMSC   OFF COAST OF JALISCO, MEXICO

O: 09APR2024 08:30:42  18.9N  107.5W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O: 09APR2024 16:50:03  18.9N  107.4W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O: 09APR2024 08:36:10  19.0N  107.4W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O:  9APR2024 08:31:46  18.8N  107.4W ML=4.0  EMSC   OFF COAST OF JALISCO, MEXICO 

P:  1APR2024 161820    19.0N  107.0W 3.5-5.3 CAAAA  Coast of Jalisco, Mexico   

P:  7APR2024 161845    20.0N  109.0W 3.5-5.2 ABBAA  Gulf of California         

P: 12APR2024 162092    19.0N  107.0W 3.5-5.5 BAAAA  Coast of Jalisco, Mexico   

 

NEIC reported an earthquake of M 3.7 in Puerto Rico was felt with intensity up to III in the area(s) of  Puerto Rico in Guanica, Barina, Susua Alta, Macana, Llanos Tuna, Coto Laurel, Bayamon.  It epicenter is at the antipode of TC Olga and was probably promoted by energy associated with that oceanic storm. This had been expected in this and previous issues of this summary as:

 

 

"TC Olga (21S) continued today in the area north of Western Australia with winds up to 045 kts.  This system is expected to track to the southwest over the next week. It could help promote enhanced seismicity the area of Indonesia.   It is near antipodal to 19N 65W in the region of Puerto Rico, Caribbean and could enhance seismicity in that region in the next several days." (April 7-10, 2024)

 

Forecast 162106 had expected today's event within about 25 km was likely  around April 13.

 

O:  9APR2024 20:53:33  18.0N   66.8W MD=3.7  EMSC   PUERTO RICO                  

P: 13APR2024 162106    18.0N   67.0W 3.4-5.2 BAAAA  Puerto Rico                

 

 

Two minor earthquakes occurred in Southern Quebec, Canada today with M 2.2 and 0.3. This is another area which saw the total eclipse on April 8 was northern Maine and southern Quebec, Canada. These two minor earthquakes were located in the St. Lawrence Seaway are of Quebec by Earthquakes Canada on April 10, 2024 along the path of the total eclipse which was observed in the area around 19:32 UT. These events of M 2.2 and 0.3 were probably promoted by tidal stresses associated with the solar eclipse.

 

Forecast 161927 had expected this activity within about 100 km was likely with the eclipse on April 8, 2024.

 

O: 10APR2024 07:27:03  47.4N   70.4W MB=0.3  ECAN OF BAIE-SAINT-PAUL, QC         

O: 10APR2024 00:10:11  47.4N   70.4W MB=2.2  ECAN OF BAIE-SAINT-PAUL, QC         

P:  8APR2024 161927    47.0N   69.0W 2.0-4.1 AAAAA  Maine                      

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 09APR2024 21:34:44  24.1N  121.7E mb=4.5  EMSC   TAIWAN

O: 09APR2024 12:20:23  24.2N  121.7E ML=4.1  EMSC   TAIWAN

O:  9APR2024 12:01:49  23.2N  120.7E ML=4.2  EMSC   TAIWAN                       

O:  9APR2024 07:40:11  23.8N  121.5E ML=4.2  EMSC   TAIWAN                       

P:  8APR2024 161857    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

 

O:  9APR2024 14:07:03  28.1N  100.3E MB=5.0  EMSC   WESTERN SICHUAN, CHINA       

P: 15APR2024 162120    28.0N  101.0E 4.0-5.5 CAAAA  Myanmar                    

 

NEIC reported this earthquake of M 5.0 in Sichuan, China was felt with intensity up to III in the area(s) of  Sichuan, China in Yongning.

 

O: 10APR2024 02:54:35  37.6N   72.0E MB=4.0  EMSC   TAJIKISTAN                   

P:  6APR2024 161874    38.0N   73.0E 3.8-5.2 BAAAA  Hindu Kush/Pakistan        

P: 13APR2024 162145    39.0N   72.0E 3.8-5.4 BBAAA  Hindu Kush/Pakistan        

 

O:  9APR2024 08:12:33  39.1N   71.5E MB=4.3  EMSC   TAJIKISTAN                   

P: 13APR2024 162145    39.0N   72.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

O:  9APR2024 09:22:45  39.5N   97.7E MB=4.7  EMSC   GANSU, CHINA                 

P:  6APR2024 161898    35.0N   99.0E 3.5-5.1 BCAAA  So. China                  

 

 

No significant (M>=5) or unusual earthquakes were reported in Asia today.

 

INDONESIA AND PHILIPPINES

 

O: 09APR2024 15:20:54   1.5S  134.6E ML=4.0  EMSC   NEAR N COAST OF PAPUA, INDONESIA

O: 09APR2024 22:22:31   1.5S  134.6E ML=4.0  EMSC   NEAR N COAST OF PAPUA, INDONESIA

O: 10APR2024 03:08:36   1.5S  134.6E ML=4.2  EMSC   NEAR N COAST OF PAPUA, INDONESIA

O:  9APR2024 11:10:11   1.5S  134.6E ML=4.4  EMSC   NEAR N COAST OF PAPUA, INDONES

P:  7APR2024 161815     2.0S  133.0E 4.0-5.6 AABAA  West Irian, PNG            

P: 17APR2024 162084     2.0S  134.0E 4.0-5.4 CAAAA  West Irian, PNG            

 

O:  9APR2024 19:44:57   2.9S  129.4E MB=4.7  EMSC   SERAM, INDONESIA             

P:  8APR2024 161798     3.0S  129.0E 4.0-5.4 AAAAA  Ceram area                 

 

O: 10APR2024 05:11:24   3.6N  128.0E ML=4.0  EMSC   NORTH OF HALMAHERA, INDONESIA

P:  8APR2024 161790     5.0N  128.0E 4.0-5.4 ABAAA  Halmahera                  

 

O: 10APR2024 05:42:11   5.3S  151.6E MB=4.7  EMSC   NEW BRITAIN REGION, P.N.G.   

P:  4APR2024 161804     6.0S  151.0E 4.0-5.5 CAAAA  New Ireland                 

P:  6APR2024 161804     4.0S  152.0E 4.0-5.5 BAAAA  New Britain                

P: 12APR2024 162070     4.0S  152.0E 4.0-5.4 ABAAA  New Britain                

 

O: 09APR2024 17:58:13   2.8N  127.2E ML=4.0  EMSC   MOLUCCA SEA

O: 09APR2024 09:48:01   2.7N  127.1E mw=6.6  ANSS   NW of Tobelo Indonesia

O:  9APR2024 09:48:02   2.7N  127.1E MW=6.4  EMSC   MOLUCCA SEA                  

P: 11APR2024 162055     3.0N  126.0E 4.0-5.4 AAAAA  Halmahera                  

 

CENTRAL AND SOUTH AMERICA

 

O:  9APR2024 16:39:42  14.8S   72.1W MB=4.7  EMSC   CENTRAL PERU                 

P: 13APR2024 162266    14.0S   73.0W 4.0-5.9 BAAAA  Central Peru               

 

O:  9APR2024 22:18:37  15.6N   87.2W ML=4.0  EMSC   HONDURAS                     

P:  8APR2024 161834    14.0N   88.0W 3.5-5.5 ABAAA  Nicaragua                  

 

O: 10APR2024 04:36:14  15.8N   94.3W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  8APR2024 161819    15.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 09APR2024 10:23:01  17.3N   94.9W ML=4.0  EMSC   VERACRUZ, MEXICO

O:  9APR2024 15:46:20  17.0N   94.6W ML=4.0  EMSC   OAXACA, MEXICO               

P: 14APR2024 162090    18.0N   95.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O:  9APR2024 20:53:33  18.0N   66.8W MD=3.7  EMSC   PUERTO RICO                  

P: 13APR2024 162106    18.0N   67.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 10APR2024 05:42:42  18.1N  105.8W ML=4.0  EMSC   OFF COAST OF JALISCO, MEXICO 

P: 12APR2024 162092    19.0N  107.0W 3.5-5.5 AAAAA  Coast of Jalisco, Mexico   

 

O: 10APR2024 06:57:23  18.8N   69.6W ML=3.1  EMSC   DOMINICAN REPUBLIC           

P:  7APR2024 161839    18.0N   69.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 09APR2024 08:15:24  18.9N  107.5W ML=3.7  EMSC   OFF COAST OF JALISCO, MEXICO

O: 09APR2024 08:30:42  18.9N  107.5W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O: 09APR2024 16:50:03  18.9N  107.4W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O: 09APR2024 08:36:10  19.0N  107.4W ML=3.8  EMSC   OFF COAST OF JALISCO, MEXICO

O:  9APR2024 08:31:46  18.8N  107.4W ML=4.0  EMSC   OFF COAST OF JALISCO, MEXICO 

P:  1APR2024 161820    19.0N  107.0W 3.5-5.3 CAAAA  Coast of Jalisco, Mexico   

P:  7APR2024 161845    20.0N  109.0W 3.5-5.2 ABBAA  Gulf of California         

P: 12APR2024 162092    19.0N  107.0W 3.5-5.5 BAAAA  Coast of Jalisco, Mexico   

 

O: 10APR2024 01:06:45  21.3S   70.0W MW=4.3  EMSC   TARAPACA, CHILE              

P:  9APR2024 162020    21.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

P: 12APR2024 162282    21.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

 

NEIC reported this earthquake of M 4.3 in northern Chile was felt with intensity up to III in the area(s) of  northern Chile in Tocopilla.

 

O:  9APR2024 18:50:32  23.5S   66.8W MB=4.5  EMSC   JUJUY, ARGENTINA             

P:  9APR2024 162018    23.0S   64.0W 4.0-5.7 AACAA  Argentina                  

P: 12APR2024 162280    22.0S   67.0W 4.0-5.4 BBAAA  Argentina                  

 

O: 10APR2024 03:14:46  29.6S   72.1W MW=4.6  EMSC   OFFSHORE COQUIMBO, CHILE     

P:  6APR2024 162033    30.0S   71.0W 4.0-5.6 BAAAA  Coast Central Chile        

P: 13APR2024 162281    29.0S   70.0W 4.0-5.6 BABAA  Coast Central Chile        

 

O: 09APR2024 18:36:21  24.1S   67.3W mb=4.5  EMSC   SALTA, ARGENTINA

O:  9APR2024 19:14:30  31.6S   68.8W ML=4.3  EMSC   SAN JUAN, ARGENTINA          

P:  7APR2024 162033    31.0S   68.0W 4.0-5.6 AAAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O:  9APR2024 13:06:34  26.3S   27.6E ML=3.1  EMSC   SOUTH AFRICA                  

P:  8APR2024 162024    27.0S   27.0E 3.0-4.5 AAAAA  Rep. South Africa          

 

SOUTHWEST PACIFIC

 

O:  9APR2024 19:08:06  25.4S  177.2W MB=4.5  EMSC   SOUTH OF FIJI ISLANDS        

P: 13APR2024 162291    27.0S  176.0W 4.0-5.4 BBAAA  Tonga Islands              

 

O:  9APR2024 10:45:27  22.3S  179.8E MB=5.0  EMSC   SOUTH OF FIJI ISLANDS        

P:  7APR2024 162031    23.0S  179.0E 4.0-5.6 AAAAA  Tonga/Fiji                 

 

OCEAN RIDGES

 

O:  9APR2024 17:21:34   2.0N   67.1E MB=4.7  EMSC   CARLSBERG RIDGE              

P: 13APR2024 162068     1.0S   67.0E 4.0-5.5 BCAAA  Indian Ocean               

 

O: 10APR2024 05:53:32  21.3N   45.6W MB=5.0  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 12APR2024 162119    24.0N   46.0W 4.0-5.6 ACAAA  Mid-Atlantic Ridge         

 

O:  9APR2024 14:51:19  37.7N   23.8W ML=4.2  EMSC   AZORES ISLANDS REGION        

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  9APR2024 11:25:25  43.2S  170.9E ML=4.1  EMSC   SOUTH ISLAND OF NEW ZEALAND  

P: 16APR2024 162308    43.0S  171.0E 3.0-5.1 CAAAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

O:  9APR2024 09:56:42  44.4N  149.0E MB=4.2  EMSC   KURIL ISLANDS                

P:  8APR2024 161953    45.0N  149.0E 3.5-5.7 AAAAA  So. Kurils                 

 

O: 10APR2024 06:19:20  29.1N  128.5E MB=4.6  EMSC   NORTHWEST OF RYUKYU ISLANDS  

P:  7APR2024 161854    27.0N  127.0E 4.0-5.5 BBBAA  Ryukyu Islands             

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  9APR2024 15:58:12  31.3N  115.3W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO      

P:  7APR2024 161893    32.9N  115.6W 2.5-5.4 ABAAA  So. California             

P:  8APR2024 161893    31.9N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 10APR2024 00:26:53  31.9N  116.2W ML=2.9  EMSC   BAJA CALIFORNIA, MEXICO      

P:  8APR2024 161893    31.9N  116.3W 2.5-4.8 AAAAA  So. California             

 

O:  9APR2024 08:31:59  33.9N  116.9W ML=2.5  EMSC   SOUTHERN CALIFORNIA          

P:  9APR2024 161895    33.9N  116.9W 2.5-4.4 AAAAA  So. California              

 

NEIC reported this earthquake of M 2.5 in Southern California was felt with intensity up to III in the area(s) of  Southern California in Banning.

 

O: 10APR2024 01:44:30  34.1N  119.4W ML=2.2  EMSC   SANTA BARBARA CHANNEL, CALIF.

P:  6APR2024 161896    34.9N  119.0W 2.5-4.4 BAAAA  So. California             

 

O:  9APR2024 18:58:07  38.7N  119.7W MD=2.2  ANSS   NE OF MARKLEEVILLE CA        

P:  8APR2024 161863    38.3N  119.3W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 10APR2024 02:48:42  40.4N  119.8W ml=2.4  ANSS   WSW of Empire, Nevada

O: 09APR2024 10:59:15  40.5N  119.8W ml=2.6  ANSS   WSW of Empire, Nevada

O: 09APR2024 10:40:02  40.5N  119.8W ml=2.8  ANSS   WSW of Empire, Nevada

O: 10APR2024 02:53:52  40.5N  119.8W ML=2.4  ANSS   NE OF HERLONG             

P:  7APR2024 161915    40.5N  119.5W 2.5-4.4 BAAAA  California/Nevada area     

 

ALASKA

 

O: 10APR2024 01:55:15  53.1N  166.8W MB=4.9  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 12APR2024 162237    53.7N  167.0W 3.5-5.0 AAAAA  Fox Islands, Aleutians     

 

O:  9APR2024 23:03:03  54.2N  162.6W MB=3.6  EMSC   ALASKA PENINSULA             

P:  7APR2024 161983    54.5N  163.5W 3.5-5.1 AAAAA  Unimak Islands, Aleutians  

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  9APR2024 10:15:16  50.7N  130.5W ML=3.4  EMSC   VANCOUVER ISLAND, CANADA REGIO

O:  9APR2024 10:15:16  50.7N  130.5W MB=3.4  ECAN OF HOLBERG, BC                 

P:  7APR2024 161966    50.6N  130.5W 3.0-5.1 AAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 10APR2024 02:59:22  48.8N  112.5W ML=3.5  EMSC   WESTERN MONTANA              

P: 14APR2024 162203    48.0N  115.0W 2.0-4.1 BABAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 10APR2024 07:27:03  47.4N   70.4W MB=0.3  ECAN OF BAIE-SAINT-PAUL, QC         

O: 10APR2024 00:10:11  47.4N   70.4W MB=2.2  ECAN OF BAIE-SAINT-PAUL, QC         

P:  8APR2024 161927    47.0N   69.0W 2.0-4.1 AAAAA  Maine                      

 

O: 10APR2024 02:19:09  35.4N   84.3W MD=1.7  ANSS   TELLICO PLAINS TENNESSEE     

P:  8APR2024 161876    35.0N   83.0W 2.0-4.4 AAAAA  Kentucky/Tennessee/NC      

 

O:  9APR2024 22:38:00  40.7N   74.7W ML=1.5  ANSS   WHITEHOUSE STATION NEW JERSEY

P:  8APR2024 161936    40.0N   74.0W 2.0-4.1 AAAAA  New York State             

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

STRONG EARTHQUAKE HITS NEW GUINEA

 

EARTHQUAKE SUMMARY FOR APRIL 8, 2024

 

The strongest earthquake in the world today was an M 6.0 in Papua New Guinea. NEIC reported it was felt with maximum intensity VI in New Guinea at Ransiki. This is the strongest earthquake within about 250 km of this epicenter since an  M 6.7 on April 21, 2012. At the time this summary noted:

 

"A strong earthquake of M 6.6-6.8 hit the region of northern New Guinea today sending panicked residents running from homes, schools and offices. While it was too small to have triggered a significant tsunami there was some damage reported but no immediate reports of injuries. Children in Manokwan, the city nearest the epicenter ran from their schools screaming and streets were filled with people fleeing their shaking buildings.  ... " (April 21, 2012)

 

Like today's event the earthquake of April 21, 2012 also occurred with the first day of the new moon and was likely promoted by tidal stresses associated with that new moon as noted at the time:

 

"The new moon alignment occurred at 0700 UT today and this earthquake occurred near local solar noon on a subduction zone. These are ideal conditions for tidal triggering by the sun-moon-earth alignment." (April 21, 2012)

 

Forecast 161815 had expected this event in this area was likely around April 7, 2024. This epicenter is at the sixth node (60 degrees) from the M 6.7 in Macquarie Island of March 3, 2024 and may have been promoted by enrgy from that source.

 

O: 09APR2024 04:29:45   1.5S  134.6E ML=4.3  EMSC   NEAR N COAST OF PAPUA, INDONESIA

O: 09APR2024 05:14:10   1.6S  134.5E mb=4.9  EMSC   NEAR N COAST OF PAPUA, INDONESIA

O:  9APR2024 00:02:53   1.7S  134.4E MW=6.0  EMSC   NEAR N COAST OF PAPUA, INDONES

P:  7APR2024 161815     2.0S  133.0E 4.0-5.6 AABAA  West Irian, PNG            

 

A moderate earthquake of M 4.0 occurred in the Hindu Kush area of Afghanistan today. It was not reported felt. This earthquake occurred near local solar noon and may have been promoted by strong tidal stresses associated with today's new moon and solar eclipse as it lies near the longitude of maximum stresses with that event new local solar noon, a time and location where such stresses were maximized with this new moon as noted in this and previous issues of this summary:

 

"The new moon will arrive on April 8, 2024 at 18:21 UT. This involves a total eclipse of the sun which will begin in western Mexico and extend through Texas, the east-Central U.S. eastern Canada and the northeastern U.S. States of Emergency have been declared for much of the eclipse path due to expected migrations of people to view the total eclipse.  Longitudes which are at local solar noon at this time are near 100 West while those at local solar midnight area near 80 East. These include areas of central North America and the East Pacific in the west and central Asia including China, India, Nepal in the East. These areas are most likely to see moderate tidal triggering at this time. Tidal enhancement of regional seismicity is possible in many areas, however, a major earthquake associated with this new moon is considered possible in the next week by this report. Minor to moderate seismic enhancement along the path through the U.S. Mexico and Canada is likely in the next week." (April 5-9, 2024)

 

Forecasts 161873 and 162144 had expected this activity within about 100 km was likely around April 7-13. This epicenter is at the seventh node (51.4 degrees) from the M 7.6 of January 1, 2024 in Honshu, Japan and at the third node (120 degrees) from the Macquarie Is. event of M 6.7 of March 3 and may have been promoted by energy from those sources. Other events at this distance from Macquarie today occurred in Northern Nevada (M 2.3) and Western Texas (M 2.5, 2.8).

 

O:  8APR2024 08:41:30  36.7N   71.3E MB=4.0  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  7APR2024 161873    37.0N   69.0E 3.8-5.3 AABAA  Hindu Kush/Pakistan        

P: 13APR2024 162144    37.0N   70.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

An M 2.3 was reported by NEIC to have occurred near Pleasant Plains, Arkansas within minutes of local solar midnight on April 9, 2024. The total eclipse of the sun was visible at this epicenter for more than 4 minutes around 18:54 UT on April 8 and probably helped this subsequent earthquake in Arkansas. The last earthquake within about 100 km of this epicenter of significantly larger magnitude than today's occurred as an M 2.8 on January 23, 2021.  An earthquake of M 2.4 and an aftershock of M 2.3 hit the area about 150 km  northwest of this on January 7, 2024. Forecast 162151 had expected this earthquake was likely around April 17 within about 50 km of today's epicenter. This epicenter is at 103 degrees from the M 6.9 in Mariana Islands of April 4 from the M 7.0 in Xinjiang China of January 22, 2024 and may have been promoted by energy from those sources.

 

O:  9APR2024 06:28:59  35.4N   91.7W MD=2.3  ANSS   PLEASANT PLAINS ARKANSAS     

P: 17APR2024 162151    35.0N   92.0W 2.0-4.1 CAAAA  New Madrid area            

 

Light earthquakes of M 2.5 and 2.8 also occurred today in western Texas. They were not reported felt in this area. These epicenters were near the path of total eclipse of the sun half a day earlier and may also have been promoted by tidal stresses associated with that event.

 

Forecast 161891 had expected this activity was likely within about 25 km of the M 2.5 around April 7, 2024.  This epicenter is at the third node (120 degrees) from the Macquarie Is. event of M 6.7 of March 3 and may have been promoted by energy from that source. Other events at this distance from Macquarie today occurred in Northern Nevada (M 2.3) and Hindu Kush (M 2.5, 2.8).

 

O: 09APR2024 00:54:38  31.8N  104.5W ML=2.8  EMSC   WESTERN TEXAS

O: 09APR2024 06:05:07  31.8N  103.7W ML=2.5  EMSC   WESTERN TEXAS

P:  7APR2024 161891    31.6N  103.6W 2.0-4.4 AAAAA  SW U.S.A                   

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 08APR2024 18:02:36  23.9N  121.7E Mw=4.8  EMSC   TAIWAN

O: 08APR2024 22:14:06  23.9N  121.8E mb=4.5  EMSC   TAIWAN

O: 08APR2024 23:26:14  24.1N  121.7E mb=4.4  EMSC   TAIWAN

O:  9APR2024 01:33:13  23.8N  121.6E ML=4.3  EMSC   TAIWAN                       

P:  8APR2024 161857    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

 

EMSC reported this earthquake of M 4.8 in Taiwan was felt with intensity up to III in the area(s) of  Taiwan in Sihcheng, Wanhua, Zhudong. 

 

O:  8APR2024 08:41:30  36.7N   71.3E MB=4.0  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  7APR2024 161873    37.0N   69.0E 3.8-5.3 AABAA  Hindu Kush/Pakistan        

P: 13APR2024 162144    37.0N   70.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

O:  9APR2024 04:10:21  42.3N   83.4E MB=4.2  EMSC   NORTHERN XINJIANG, CHINA     

P: 12APR2024 162198    42.0N   82.0E 4.0-5.8 BAAAA  Kirgizstan/Xinjiang        

 

INDONESIA AND PHILIPPINES

 

O:  8APR2024 14:02:15   0.3N  122.3E ML=4.0  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  8APR2024 161784     1.0N  122.0E 4.0-5.4 AAAAA  Celebes Sea                

 

O:  8APR2024 11:43:53   0.7N  129.3E ML=4.1  EMSC   HALMAHERA, INDONESIA         

P:  8APR2024 161798     3.0S  129.0E 4.0-5.4 ACAAA  Ceram area                 

 

O:  8APR2024 17:18:01   2.9S  127.9E MB=4.5  EMSC   CERAM SEA, INDONESIA         

P:  8APR2024 161798     3.0S  129.0E 4.0-5.4 AAAAA  Ceram area                 

 

O:  8APR2024 15:56:21   8.8N  126.4E MB=4.6  EMSC   MINDANAO, PHILIPPINES        

P: 11APR2024 162056     9.0N  127.0E 4.0-5.4 BAAAA  Halmahera                  

 

O:  8APR2024 13:57:42  13.8N  120.7E MB=4.4  EMSC   MINDORO, PHILIPPINES         

P:  6APR2024 161829    14.0N  121.0E 3.5-5.0 AAAAA  Luzon, Philippines         

 

O: 09APR2024 04:29:45   1.5S  134.6E ML=4.3  EMSC   NEAR N COAST OF PAPUA, INDONESIA

O: 09APR2024 05:14:10   1.6S  134.5E mb=4.9  EMSC   NEAR N COAST OF PAPUA, INDONESIA

O:  9APR2024 00:02:53   1.7S  134.4E MW=6.0  EMSC   NEAR N COAST OF PAPUA, INDONES

P:  7APR2024 161815     2.0S  133.0E 4.0-5.6 AABAA  West Irian, PNG            

 

O: 08APR2024 18:48:18   4.2S  103.4E ML=4.0  EMSC   SOUTHERN SUMATRA, INDONESIA

O:  9APR2024 00:58:31   4.9S  103.0E MB=4.7  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  6APR2024 161811     5.0S  102.0E 4.0-5.4 BAAAA  So. of Sumatera            

 

CENTRAL AND SOUTH AMERICA

 

O: 08APR2024 13:46:00  12.7N   87.9W ML=4.0  EMSC   NEAR COAST OF NICARAGUA

O:  8APR2024 09:52:15  11.2N   87.4W ML=4.2  EMSC   NEAR COAST OF NICARAGUA      

P:  9APR2024 161833    12.0N   86.0W 3.5-5.5 AABAA  Nicaragua                  

P: 12APR2024 162101    13.0N   87.0W 3.5-5.3 BBAAA  Nicaragua                  

 

O:  9APR2024 02:42:57  13.7N   92.4W ML=4.0  EMSC   OFFSHORE GUATEMALA           

P:  8APR2024 161822    14.0N   91.0W 3.5-5.2 AABAA  Guatemala                  

 

O: 08APR2024 20:14:04  15.7N   93.7W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O:  8APR2024 08:48:00  16.2N   94.8W ML=4.4  EMSC   OFFSHORE OAXACA, MEXICO      

P:  8APR2024 161819    15.0N   95.0W 3.5-5.3 ABAAA  Chiapas, Mexico            

 

O:  9APR2024 02:16:53  17.1N   96.7W ML=4.0  EMSC   OAXACA, MEXICO               

P:  9APR2024 161837    18.0N   97.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O:  9APR2024 00:26:27  18.1N  103.3W ML=4.2  EMSC   OFFSHORE MICHOACAN, MEXICO   

P:  7APR2024 161831    18.0N  102.0W 3.5-5.4 AAAAA  Michoacan, Mexico          

P: 13APR2024 162099    18.0N  103.0W 3.5-5.3 BAAAA  Michoacan, Mexico          

 

O:  9APR2024 02:31:27  18.3N  100.1W ML=4.0  EMSC   GUERRERO, MEXICO             

P:  6APR2024 161837    17.0N   99.0W 3.5-5.3 BBAAA  Oaxaca, Mexico             

 

O:  8APR2024 11:07:28  19.1N   65.4W MD=3.6  EMSC   PUERTO RICO REGION           

P:  5APR2024 161842    20.0N   65.0W 3.0-4.6 BAAAA  Bahamas/No. Caribbean      

 

O:  8APR2024 10:41:04  19.2N   67.3W MD=3.7  EMSC   PUERTO RICO REGION           

P:  4APR2024 161839    19.0N   67.0W 3.4-5.0 BAAAA  Puerto Rico                

P: 13APR2024 162106    18.0N   67.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O:  8APR2024 08:44:04  19.7N   70.3W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P:  7APR2024 161843    20.0N   71.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O: 08APR2024 09:21:16  27.8N  112.3W ML=3.3  EMSC   GULF OF CALIFORNIA

O:  8APR2024 09:55:58  27.7N  112.4W ML=3.0  EMSC   GULF OF CALIFORNIA           

P: 15APR2024 162115    28.0N  112.0W 3.5-5.1 CAAAA  Gulf of California         

 

O:  8APR2024 12:00:30  31.6S   69.0W ML=4.0  EMSC   SAN JUAN, ARGENTINA          

P:  7APR2024 162033    31.0S   68.0W 4.0-5.6 AAAAA  Central Chile              

 

AFRICA AND EUROPE

 

O:  8APR2024 12:06:31  24.9S   27.3E ML=3.0  EMSC   SOUTH AFRICA                 

P:  8APR2024 162024    27.0S   27.0E 3.0-4.5 ACAAA  Rep. South Africa          

 

O:  8APR2024 21:59:21  38.8N   21.1E MB=4.4  EMSC   GREECE                       

P:  7APR2024 161881    37.0N   21.0E 3.0-4.6 ABAAA  No. Greece                 

 

NEIC reported this earthquake of M 4.4 in Greece was felt with intensity up to III in the area(s) of  Greece in Amfilochia.

EMSC reported this earthquake of M 4.4 in Greece  was felt with intensity up to III in the area(s) of  Greece in Vonitsa, Pogonia, Vathy, Lefkada, Prevesa, Nudri, Agrinio, Vlycho, Kathochori, Arta, Molykreio, Patras, Mousata, Paralia and in Albania at Vlore, Durres. 

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

O:  8APR2024 20:57:59  16.4S  172.9W MW=5.2  EMSC   SAMOA ISLANDS REGION         

P: 14APR2024 162274    16.0S  173.0W 4.0-5.4 CAAAA  Tonga Islands              

 

NEIC reported this earthquake of M 5.2 in Tonga was felt with intensity up to III in the area(s) of  Tonga in Hihifo.

 

O:  8APR2024 11:50:14  19.5S  177.4W MB=4.3  EMSC   FIJI REGION                  

P:  8APR2024 162029    21.0S  177.0W 4.0-5.7 ABAAA  Tonga Islands              

 

O:  8APR2024 17:29:47   7.4N   81.8W ML=4.6  EMSC   PANAMA                       

P:  8APR2024 161789     8.0N   83.0W 3.5-5.1 AABAA  Costa Rica                  

 

O:  8APR2024 14:24:46  23.4S  179.8W MB=4.9  EMSC   SOUTH OF FIJI ISLANDS        

P:  6APR2024 162029    25.0S  180.0W 4.0-5.7 ABAAA  Tonga Islands              

 

OCEAN RIDGES

 

O:  9APR2024 05:38:51  27.7N   15.3W ML=2.7  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 13APR2024 162113    28.0N   16.0W 3.0-4.8 BAAAA  Canary Islands             

 

 

ZEALANDIA AND AUSTRALIA REGION

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today.

 

JAPAN AND KURIL ISLANDS

 

 

O:  9APR2024 05:10:25  23.4N  143.1E MB=5.0  EMSC   VOLCANO ISLANDS, JAPAN REGION

P:  5APR2024 161844    26.0N  143.0E 4.0-5.4 BCAAA  Bonin Islands              

 

O:  8APR2024 13:29:30  37.5N  137.2E ML=4.1  EMSC   NEAR WEST COAST OF HONSHU, JAP

P:  4APR2024 161883    37.0N  137.0E 3.5-4.9 BAAAA  No. Honshu, Japan          

P:  7APR2024 161883    37.0N  139.0E 3.5-4.9 AABAA  No. Honshu, Japan          

 

O:  8APR2024 21:13:03  40.2N  141.6E MB=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  8APR2024 161920    40.0N  143.0E 3.5-5.4 AAAAA  Hokkaido, Japan            

P: 12APR2024 162194    40.0N  142.0E 3.5-5.4 BAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

 

O:  9APR2024 02:26:26  32.4N  115.2W ML=2.9  EMSC   BAJA CALIFORNIA, MEXICO      

P:  7APR2024 161893    32.9N  115.6W 2.5-5.4 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.0 in Baja California, Mexico was felt with intensity up to III in the area(s) of  Baja California, Mexico in Delta.

 

O: 08APR2024 13:27:00  38.8N  122.7W MD=2.2  EMSC   NORTHERN CALIFORNIA

O:  8APR2024 15:45:40  38.8N  122.7W ML=3.0  EMSC   NORTHERN CALIFORNIA          

P:  7APR2024 161867    38.8N  122.8W 2.5-4.7 AAAAA  Central California         

 

NEIC reported this earthquake of M 3.2 in Northern California was felt with intensity up to V in the area(s) of  Northern California in the Geysers.

 

O:  8APR2024 12:10:44  40.4N  121.5W MD=2.2  EMSC   LASSEN PEAK AREA, CALIFORNIA 

P:  7APR2024 161868    39.8N  120.6W 2.5-4.7 AAAAA  Central California         

 

O:  8APR2024 09:31:43  41.9N  119.6W ML=2.3  EMSC   NEVADA                       

P:  7APR2024 161915    40.5N  119.5W 2.5-4.4 ABAAA  California/Nevada area     

P: 11APR2024 162216    42.1N  120.3W 2.0-4.3 BAAAA  Oregon state, U.S.         

 

ALASKA

 

O:  9APR2024 05:19:43  51.1N  179.5E ML=3.7  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  9APR2024 161978    51.0N  179.0E 4.0-5.8 AAAAA  Rat Islands                

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

 

O:  9APR2024 01:58:42  50.7N  130.4W ML=3.3  EMSC   VANCOUVER ISLAND, CANADA REGIO

O: 09APR2024 10:15:16  50.7N  130.5W MB=3.4  ECAN OF HOLBERG, BC   

O: 09APR2024 01:58:42  50.7N  130.4W MB=3.3  ECAN OF HOLBERG, BC   

O: 09APR2024 10:15:16  50.7N  130.5W MB=3.4  ECAN OF HOLBERG, BC   

O: 09APR2024 01:58:42  50.7N  130.4W MB=3.3  ECAN OF HOLBERG, BC   

P:  7APR2024 161966    50.6N  130.5W 3.0-5.1 AAAAA  British Colombia           

 

O:  8APR2024 18:10:20  52.1N  132.0W ML=3.1  EMSC   QUEEN CHARLOTTE ISLANDS REGION

O: 08APR2024 18:10:20  52.1N  132.0W MB=3.1  ECAN OF QUEEN CHARLOTTE, BC  

P:  7APR2024 161967    52.0N  131.0W 3.0-5.1 AAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O:  8APR2024 13:56:37  39.6N  111.3W ML=2.2  EMSC   UTAH                          

P:  7APR2024 161908    39.6N  111.9W 2.0-4.0 AAAAA  Utah area                  

 

O: 08APR2024 20:15:19  31.6N  104.3W ML=2.1  EMSC   WESTERN TEXAS

O: 08APR2024 21:10:51  31.7N  104.4W ML=2.1  EMSC   WESTERN TEXAS

O: 09APR2024 00:54:38  31.8N  104.5W ML=2.8  EMSC   WESTERN TEXAS

O: 09APR2024 06:05:07  31.8N  103.7W ML=2.5  EMSC   WESTERN TEXAS

O:  8APR2024 18:48:00  31.6N  104.5W ML=2.2  ANSS   WHITES CITY NEW MEXICO       

P:  7APR2024 161891    31.6N  103.6W 2.0-4.4 AAAAA  SW U.S.A                    

 

EASTERN U.S./CANADA

 

O:  9APR2024 02:46:40  37.7N   77.5W ML=2.1  EMSC   VIRGINIA                     

P:  5APR2024 161877    37.0N   77.0W 2.0-4.5 BAAAA  Kentucky/Tennessee/NC      

 

EMSC reported this earthquake of M  2.1 in Virginia  was felt with intensity up to III in the area(s) of  Virginia in Glen Allen.

 

O:  8APR2024 08:01:36  38.1N   83.2W MD=2.3  EMSC   EASTERN KENTUCKY             

P:  6APR2024 161877    37.2N   81.9W 2.0-4.0 AAAAA  Kentucky/Tennessee/NC      

 

O:  9APR2024 04:59:00  52.4N   87.7W ML=2.9  EMSC   ONTARIO, CANADA              

O: 09APR2024 04:59:00  52.4N   87.7W MB=2.9  ECAN OF NESKANTAGA, ON   

 

O:  7APR2024 19:24:12  46.0N   75.0W MB=1.9  ECAN OF LAC-DES-PLAGES, QC          

P:  6APR2024 161938    47.0N   76.0W 2.0-4.0 AAAAA  New York State             

 

O:  7APR2024 15:49:09  47.3N   70.4W MB=1.8  ECAN OF PETITE-RIVI├¿RE-SAINT-FRAN├ºO

P:  8APR2024 161927    47.0N   69.0W 2.0-4.1 AAAAA  Maine                      

 

O:  9APR2024 06:28:59  35.4N   91.7W MD=2.3  ANSS   PLEASANT PLAINS ARKANSAS     

P: 17APR2024 162151    35.0N   92.0W 2.0-4.1 CAAAA  New Madrid area            

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

 

MODERATELY STRONG QUAKE IN SOUTHERN XINJIANG, CHINA

 

EARTHQUAKE SUMMARY FOR APRIL 7, 2024

 

The strongest earthquake in the world today was an M 5.4 in Southern Xinjiang, China. It was accompanied by a series of moderate aftershocks. The last earthquake within about 200 km of this epicenter in Southern Xinjiang, China of M>=5.4 occurred on March 23, 2021 with M 5.4 and on January 29, 2023 with M 5.7 about 200 km south of today's epicenter. At the time this summary noted:

 

"The strongest earthquake in the world today was an M 5.7 in Southern Xinjiang, China. NEIC reported it was felt with intensity IV in Kuche and Aksu. The only earthquake within about 200 km of this epicenter with M>=5.7 in the past 35 years was an M 5.8-5.9 on March 8, 2012. At the time this summary noted:

 

"A strong earthquake of M 5.8-6.1 hit the area of southern Xinjiang, China today. NEIC reported it was felt with intensity VI in Aksu, Xinjiang, China. The epicenter is in the Taklimakan Desert region northeast of Hotan and there were no immediate reports of damage or injuries. The earthquake was felt strongly in Hotan and officials are expecting damage reports from the prefectures of Aksu, Kashi, Hotan, Baya Fol and Ili. The quakes was felt in each of these regions according to Xinhua. Reports from this area are often delayed and some damage may have occurred which will be reported at a later time. The epicenter is near the border with Kyrgyzstan." (March 9, 2012, January 29, 2023)

 

 

Today's event occurred near local solar noon and was probably triggered by strong tidal stresses which maximize near this hour. The area was expected to see strong seismic enhancement at this time due to tidal effects of the new moon of April 8, 2024 as previously noted in this summary:

 

"The new moon will arrive on April 8, 2024 at 18:21 UT. This involves a total eclipse of the sun which will begin in western Mexico and extend through Texas, the east-Central U.S. eastern Canada and the northeastern U.S. States of Emergency have been declared for much of the eclipse path due to expected migrations of people to view the total eclipse.  Longitudes which are at local solar noon at this time are near 100 West while those at local solar midnight area near 80 East. These include areas of central North America and the East Pacific in the west and central Asia including China, India, Nepal in the East. These areas are most likely to see moderate tidal triggering at this time. Tidal enhancement of regional seismicity is possible in many areas, however, a major earthquake associated with this new moon is considered possible in the next week by this report. Minor to moderate seismic enhancement along the path through the U.S. Mexico and Canada is likely in the next week." (April 5-9, 2024)

 

Forecasts 161925 and 162198 had expected this earthquake was likely around April 3-12 within about 50 km of this epicenter. This epicenter is at the third node (120 degrees) from the Macquarie Island quake of M 6.7 of March 3, 2024 and at 104 degrees from the M 6.7 in Tonga of March 27 and at the seventh node (51.4 degrees) from recent strong earthquakes in Mindanao, Philippines and may have been promoted by energy from those sources.

 

O: 07APR2024 09:45:28  41.8N   82.5E mb=4.5  EMSC   SOUTHERN XINJIANG, CHINA

O: 07APR2024 14:20:57  41.8N   82.5E mb=4.3  EMSC   SOUTHERN XINJIANG, CHINA

O: 07APR2024 08:46:18  41.9N   82.3E Mw=5.4  EMSC   SOUTHERN XINJIANG, CHINA

O: 07APR2024 11:03:08  41.9N   82.3E mb=4.5  EMSC   SOUTHERN XINJIANG, CHINA

O: 07APR2024 20:47:59  41.9N   82.1E Mw=5.0  EMSC   SOUTHERN XINJIANG, CHINA

O: 07APR2024 23:16:27  41.9N   82.3E mb=4.6  EMSC   SOUTHERN XINJIANG, CHINA

O:  7APR2024 08:44:04  41.8N   82.3E MB=4.6  EMSC   SOUTHERN XINJIANG, CHINA     

P:  3APR2024 161925    42.0N   79.0E 4.0-5.5 BABAA  Kirgizstan/Xinjiang         

P: 12APR2024 162198    42.0N   82.0E 4.0-5.8 BAAAA  Kirgizstan/Xinjiang        

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O:  7APR2024 11:39:49  30.0N   57.6E MB=4.5  EMSC   EASTERN IRAN                 

P: 10APR2024 161899    31.0N   57.0E 3.8-5.4 AAAAA  So. Iran                   

 

EMSC reported this earthquake of M 4.5 in Eastern Iran was felt with intensity up to III in the area(s) of  Eastern Iran at Kerman.

 

O:  8APR2024 04:04:03  36.0N   70.8E MB=4.7  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 13APR2024 162144    37.0N   70.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

O:  8APR2024 01:46:19  37.7N   69.2E MB=4.0  EMSC   TAJIKISTAN                   

P:  7APR2024 161873    37.0N   69.0E 3.8-5.3 AAAAA  Hindu Kush/Pakistan        

 

O: 07APR2024 10:01:22  24.1N  122.0E Mw=4.9  EMSC   TAIWAN REGION

O: 07APR2024 10:24:40  24.1N  121.7E ML=4.4  EMSC   TAIWAN

O: 07APR2024 22:49:29  24.2N  121.9E mb=4.6  EMSC   TAIWAN

O: 08APR2024 05:09:34  24.2N  121.9E Mw=4.6  EMSC   TAIWAN

O: 07APR2024 15:35:22  24.3N  121.9E ML=4.0  EMSC   TAIWAN

O: 07APR2024 18:12:47  24.3N  121.8E ML=4.4  EMSC   TAIWAN

O: 07APR2024 23:28:50  24.3N  121.9E ML=4.3  EMSC   TAIWAN

O:  7APR2024 19:58:40  23.9N  121.8E MB=4.3  EMSC   TAIWAN                       

P:  8APR2024 161857    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

 

EMSC reported this earthquake of M 4.9 in Taiwan was felt with intensity up to III in the area(s) of  Taiwan in Taipei, Da'an, Sanxia, Zhongshan, Wanhua, Shanzihding. 

 

O: 07APR2024 09:45:28  41.8N   82.5E mb=4.5  EMSC   SOUTHERN XINJIANG, CHINA

O: 07APR2024 14:20:57  41.8N   82.5E mb=4.3  EMSC   SOUTHERN XINJIANG, CHINA

O: 07APR2024 08:46:18  41.9N   82.3E Mw=5.4  EMSC   SOUTHERN XINJIANG, CHINA

O: 07APR2024 11:03:08  41.9N   82.3E mb=4.5  EMSC   SOUTHERN XINJIANG, CHINA

O: 07APR2024 20:47:59  41.9N   82.1E Mw=5.0  EMSC   SOUTHERN XINJIANG, CHINA

O: 07APR2024 23:16:27  41.9N   82.3E mb=4.6  EMSC   SOUTHERN XINJIANG, CHINA

O:  7APR2024 08:44:04  41.8N   82.3E MB=4.6  EMSC   SOUTHERN XINJIANG, CHINA     

P:  3APR2024 161925    42.0N   79.0E 4.0-5.5 BABAA  Kirgizstan/Xinjiang        

P: 12APR2024 162198    42.0N   82.0E 4.0-5.8 BAAAA  Kirgizstan/Xinjiang        

 

INDONESIA AND PHILIPPINES

 

O: 07APR2024 17:23:50   1.5N  126.5E ML=4.0  EMSC   MOLUCCA SEA

P:  7APR2024 161790     1.0N  128.0E 4.0-5.6 AABAA  Halmahera                  

 

O:  7APR2024 14:36:56   1.9S  138.5E ML=4.0  EMSC   NEAR N COAST OF PAPUA, INDONES

P:  9APR2024 161816     3.0S  139.0E 4.0-5.4 ABAAA  West Irian, PNG            

 

O:  7APR2024 07:21:54   3.4S  123.3E ML=4.0  EMSC   SULAWESI, INDONESIA          

P: 13APR2024 162083     2.0S  123.0E 4.0-5.4 CBAAA  Sulawesi area              

 

O:  8APR2024 01:02:56   4.5N  127.7E MB=4.5  EMSC   KEPULAUAN TALAUD, INDONESIA  

P:  8APR2024 161790     5.0N  128.0E 4.0-5.4 AAAAA  Halmahera                  

 

O:  7APR2024 20:31:05   4.9S  144.3E MB=5.1  EMSC   NEAR N COAST OF NEW GUINEA, PN

P:  6APR2024 161805     4.0S  145.0E 4.0-5.4 AAAAA  New Ireland                

 

O:  7APR2024 07:25:09   6.4S  149.2E MB=5.2  EMSC   NEW BRITAIN REGION, P.N.G.   

P:  4APR2024 161804     6.0S  151.0E 4.0-5.5 BABAA  New Ireland                

P:  5APR2024 161805     3.0S  149.0E 4.0-5.4 ACAAA  New Ireland                

 

O:  7APR2024 17:46:19   6.5S  104.0E MB=5.2  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P:  2APR2024 161811     6.0S  103.0E 4.0-5.5 BAAAA  So. of Sumatera            

P:  6APR2024 161811     5.0S  102.0E 4.0-5.4 ABBAA  So. of Sumatera            

 

O:  7APR2024 18:28:49   6.9S  130.6E ML=4.4  EMSC   BANDA SEA                    

P: 10APR2024 161795     7.0S  127.0E 4.0-5.4 BACAA  Banda Sea                  

 

O:  7APR2024 22:19:58   7.5S  128.2E MW=5.0  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 10APR2024 161795     7.0S  127.0E 4.0-5.4 BABAA  Banda Sea                   

 

BMG reported this earthquake of M 5.5 in the Banda Sea.

 

O:  8APR2024 02:50:53   8.7S  118.4E ML=4.0  EMSC   SUMBAWA REGION, INDONESIA    

O: 07APR2024 14:57:19   9.0S  118.6E mb=4.9  EMSC   SUMBAWA REGION, INDONESIA

P:  7APR2024 161814     8.0S  117.0E 4.0-5.4 AABAA  Sumbawa Island area        

 

EMSC reported this earthquake of M 4.9 in Sumbawa, Indonesia was felt with intensity up to III in the area(s) of  Sumbawa, Indonesiain Hu'u, Komodo, Batu Layar.

BMG reported it with M 5.2 was felt with intensity IV in Sta Met, Bima; II in Kab Sumbawa, Dompu, Bima, Sumba and Kolaka.

 

O:  7APR2024 15:14:10   8.7N  126.1E ML=4.0  EMSC   MINDANAO, PHILIPPINES        

O:  7APR2024 21:11:19  10.2N  125.8E ML=4.0  EMSC   LEYTE, PHILIPPINES            

P:  6APR2024 161828    10.0N  127.0E 3.5-5.0 AAAAA  Luzon, Philippines         

 

 

CENTRAL AND SOUTH AMERICA

 

O:  7APR2024 07:13:38   3.0S   79.5W ML=4.0  EMSC   NEAR COAST OF ECUADOR        

P:  3APR2024 161799     4.0S   80.0W 4.0-5.8 BAAAA  Ecuador                     

 

O:  7APR2024 14:05:30   9.6N   84.8W ML=4.0  EMSC   COSTA RICA                   

P:  5APR2024 161818    10.0N   84.0W 3.5-5.2 AAAAA  Caribbean Sea              

 

O:  7APR2024 08:03:44  10.5N   65.0W MB=4.5  EMSC   OFFSHORE ANZOATEGUI, VENEZUELA

P:  3APR2024 161841    10.0N   63.0W 3.4-5.4 BABAA  Windward Islands           

 

O:  7APR2024 09:43:36  11.0N   87.0W ML=4.1  EMSC   OFF COAST OF COSTA RICA      

P:  5APR2024 161833    13.0N   87.0W 3.5-5.3 ABAAA  Nicaragua                   

 

O:  7APR2024 21:28:42  11.5N   85.5W MB=4.3  EMSC   NICARAGUA                    

P:  9APR2024 161833    12.0N   86.0W 3.5-5.5 AAAAA  Nicaragua                  

 

O:  7APR2024 17:49:33  13.8N   89.0W MB=5.0  EMSC   EL SALVADOR                  

P:  8APR2024 161834    14.0N   88.0W 3.5-5.5 AAAAA  Nicaragua                  

 

O:  7APR2024 22:20:52  15.6N   92.2W ML=4.0  EMSC   CHIAPAS, MEXICO              

P: 12APR2024 162094    15.0N   92.0W 3.5-5.3 BAAAA  Guatemala                  

 

O: 08APR2024 06:29:29  16.9N   94.8W ML=4.3  EMSC   OAXACA, MEXICO

O:  7APR2024 23:42:52  16.9N   94.3W ML=4.0  EMSC   OAXACA, MEXICO               

P:  6APR2024 161819    15.0N   94.0W 3.5-5.8 ABAAA  Chiapas, Mexico            

 

O:  8APR2024 02:42:52  17.7N  101.5W ML=4.1  EMSC   GUERRERO, MEXICO             

P:  7APR2024 161831    18.0N  102.0W 3.5-5.4 AAAAA  Michoacan, Mexico          

 

O:  7APR2024 09:00:27  18.5N   71.9W ML=3.0  EMSC   HAITI REGION                 

P:  5APR2024 161843    19.0N   73.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O:  7APR2024 07:31:06  18.6N   65.1W MD=3.3  EMSC   VIRGIN ISLANDS REGION        

P:  7APR2024 161827    19.0N   64.0W 3.0-5.2 AAAAA  Leeward Islands            

 

O: 07APR2024 07:17:39  18.9N   68.7W MD=3.8  EMSC   DOMINICAN REPUBLIC

O: 07APR2024 13:42:03  19.0N   68.1W ML=3.5  EMSC   DOMINICAN REPUBLIC REGION

O:  7APR2024 22:39:07  18.8N   68.4W MD=3.4  EMSC   DOMINICAN REPUBLIC REGION    

P:  7APR2024 161839    18.0N   69.0W 3.4-4.9 AAAAA  Puerto Rico                 

 

O:  7APR2024 15:12:51  19.3N   70.9W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P:  7APR2024 161843    20.0N   71.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O:  7APR2024 16:04:45  23.0S   70.9W MB=4.9  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

P:  5APR2024 162019    24.0S   69.0W 4.0-5.5 AABAA  Coast No. Chile            

 

O: 07APR2024 07:16:10  26.0N  110.3W ML=4.1  EMSC   GULF OF CALIFORNIA

O:  7APR2024 10:58:24  24.8N  108.9W ML=4.0  EMSC   GULF OF CALIFORNIA           

P: 11APR2024 162114    24.0N  109.0W 3.5-4.9 BAAAA  Gulf of California         

 

O:  7APR2024 07:56:43  27.8N  112.3W ML=3.6  EMSC   GULF OF CALIFORNIA           

O: 07APR2024 07:16:10  26.0N  110.3W ML=4.1  EMSC   GULF OF CALIFORNIA

O:  7APR2024 07:23:50  26.1N  110.6W ML=3.9  EMSC   GULF OF CALIFORNIA           

P:  2APR2024 161845    26.0N  111.0W 3.5-5.2 BAAAA  Gulf of California         

 

AFRICA AND EUROPE

 

O:  7APR2024 21:53:02  26.2S   27.7E ML=3.0  EMSC   SOUTH AFRICA                 

O:  8APR2024 01:43:26  26.9S   26.9E ML=3.0  EMSC   SOUTH AFRICA                 

P:  8APR2024 162024    27.0S   27.0E 3.0-4.5 AAAAA  Rep. South Africa          

 

O:  7APR2024 21:42:05  32.4S   18.0E ML=3.0  EMSC   SOUTH AFRICA                 

 

O:  7APR2024 18:13:01  74.0N    2.8E MB=3.5  EMSC   GREENLAND SEA                

P: 15APR2024 162263    72.0N    0.0E 3.0-4.8 CBAAA  Norway                     

 

SOUTHWEST PACIFIC

 

O: 08APR2024 06:07:20  20.4S  177.9W mb=4.5  EMSC   FIJI REGION

O:  7APR2024 09:53:39  20.4S  178.1W MB=4.5  EMSC   FIJI REGION                  

P:  8APR2024 162029    21.0S  177.0W 4.0-5.7 AAAAA  Tonga Islands              

 

O:  7APR2024 12:08:35  26.4S  178.7W MB=5.0  EMSC   SOUTH OF FIJI ISLANDS        

P:  8APR2024 162023    28.0S  177.0W 4.0-5.8 ABBAA  No. Kermadec Islands       

 

OCEAN RIDGES

 

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  8APR2024 03:10:15  31.0S  178.4W MB=5.1  EMSC   KERMADEC ISLANDS REGION      

P:  9APR2024 162039    31.0S  177.0W 4.0-5.4 AABAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O:  7APR2024 20:51:30  38.2N  141.7E ML=3.6  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  8APR2024 161889    38.0N  140.0E 4.0-5.5 AABAA  Off East Coast Honshu      

 

O:  7APR2024 17:08:34  36.4N  142.0E MB=4.3  EMSC   OFF EAST COAST OF HONSHU, JAPA

P:  3APR2024 161888    36.0N  141.0E 4.0-5.5 BAAAA  Off East Coast Honshu      

 

O:  7APR2024 20:04:40  24.4N  142.8E MB=4.7  EMSC   VOLCANO ISLANDS, JAPAN REGION

P:  5APR2024 161844    26.0N  143.0E 4.0-5.4 ABAAA  Bonin Islands              

 

O:  8APR2024 01:25:30  31.7N  131.4E MW=5.1  EMSC   KYUSHU, JAPAN                

P:  6APR2024 161878    31.0N  130.0E 3.5-4.9 AAAAA  Kyushu, Japan area         

 

O:  8APR2024 04:57:08  32.1N  131.9E MB=4.6  EMSC   KYUSHU, JAPAN                

P: 14APR2024 162147    34.0N  132.0E 3.5-5.0 CBAAA  Kyushu, Japan area         

 

O:  7APR2024 21:31:02  50.4N  157.3E MB=4.7  EMSC   KURIL ISLANDS                

P:  6APR2024 161970    52.0N  159.0E 4.0-5.8 ABBAA  Kamchatka                  

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  7APR2024 20:21:20  32.0N  116.3W ML=2.1  EMSC   BAJA CALIFORNIA, MEXICO      

P:  8APR2024 161893    31.9N  116.3W 2.5-4.8 AAAAA  So. California              

 

O:  7APR2024 08:05:56  29.9N  115.2W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO      

P:  6APR2024 161892    30.6N  114.6W 2.0-4.4 AAAAA  SW U.S.A                   

 

O:  8APR2024 03:15:09  35.9N  117.7W ML=2.0  EMSC   CENTRAL CALIFORNIA            

P:  6APR2024 161897    35.9N  117.7W 2.5-4.6 AAAAA  So. California             

 

O: 07APR2024 13:38:49  40.1N  121.3W MD=2.2  EMSC   NORTHERN CALIFORNIA

O: 08APR2024 02:38:02  40.1N  121.3W MD=2.4  EMSC   NORTHERN CALIFORNIA

O:  8APR2024 01:26:20  40.0N  121.3W MD=2.5  EMSC   NORTHERN CALIFORNIA          

P:  7APR2024 161942    40.7N  122.3W 2.5-4.9 AAAAA  Northern California        

 

O:  8APR2024 06:11:47  40.3N  124.4W MD=2.6  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  9APR2024 161943    40.7N  124.6W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

O:  7APR2024 07:09:57  41.9N  119.6W ML=2.1  EMSC   NEVADA                       

P: 11APR2024 162216    42.1N  120.3W 2.0-4.3 BAAAA  Oregon state, U.S.         

 

 

ALASKA

 

O:  7APR2024 15:43:52  54.7N  157.8W ML=3.0  EMSC   SOUTH OF ALASKA              

P: 15APR2024 162229    54.8N  158.7W 3.5-5.0 CAAAA  Alaska Peninsula           

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

 

O:  7APR2024 07:16:04  50.7N  130.5W ML=2.5  EMSC   VANCOUVER ISLAND, CANADA REGIO

P:  7APR2024 161966    50.6N  130.5W 3.0-5.1 AAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O:  7APR2024 13:21:44  31.9N  101.7W ML=2.0  EMSC   WESTERN TEXAS                

P:  7APR2024 161891    31.6N  103.6W 2.0-4.4 AABAA  SW U.S.A                    

P: 11APR2024 162163    32.2N  101.1W 2.0-3.9 BAAAA  SW U.S.A                   

 

O:  8APR2024 04:42:48  47.5N  115.8W ML=2.2  EMSC   NORTHERN IDAHO               

P:  6APR2024 161931    47.5N  115.8W 2.0-4.2 AAAAA  Montana/Idaho               

 

EASTERN U.S./CANADA

 

 

O:  7APR2024 15:35:13  40.7N   74.7W ML=2.2  EMSC   NEW JERSEY                   

P:  8APR2024 161936    40.0N   74.0W 2.0-4.1 AAAAA  New York State             

 

O:  7APR2024 19:24:12  46.0N   75.0W MB=1.9  ECAN OF LAC-DES-PLAGES, QC          

P:  6APR2024 161938    47.0N   76.0W 2.0-4.0 AAAAA  New York State             

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

LIGHT ACTIVITY SHAKES CENTRAL CALIFORNIA, SAN FRANCISCO

 

EARTHQUAKE SUMMARY FOR APRIL 6, 2024

 

An earthquake of M 3.2 was also widely felt in the region of San Francisco, California today. NEIC reported intensity up to IV with this event was felt in the area of Berkeley, California. EMSC reported it was felt as a strong jolt in California in Berkeley, Oakland, Emeryville, El Cerrito, Moraga, El Sobrante, Pinole, San Francisco, Concord, San Leandro, Benicia, San Bruno. Recent triggering forces which may have helped promote enhanced seismicity in the region of San Francisco at this time have included a strong geomagnetic storm at the end of March, 2024; the nor'easter in Northeastern U.S. of the past several days and the M 7.5 earthquake in Taiwan of April 3, 2024. This is unlikely a foreshock to a moderate to large regional earthquake as (in this area) such events are commonly associated with a strong solar flare(s) and the sun is currently quiet of such. Two lighter earthquakes today of M 2.5 and 2.1 also shook areas of the San Francisco Bay area, both to the south of today's eventi of M 3.2. Similar events of M 3.2 in the San Francisco Bay area occurred on February 22 and February 2, 2024 but the last event of stronger magnitude than M 3.2 in the northern area near today's epicenter was an M 3.7 on April 20, 2023 and an M 3.7 about 30 km south of this on October 28, 2023. At that time this summary noted:

 

 

"A series of unusual earthquakes occurred today with the new moon and solar eclipse of early April 20. These began with an M 6.3 next to the eclipse path in New Guinea. This was followed by the strongest earthquake in at least 35 years in the southern North American Continental slope area off South Carolina of M 4.5-4.7. This may have been a clathate eruption in an area where large clathate deposits are know to exist. Later in the day and within minutes of the new moon and eclipse an M 3.7-3.8 earthquake shook areas of San Francisco, California. These all implicate the new moon and eclipse as important triggers for this seismicity." (April 20, 2023)

 

Readers may note the similarity of new moon and solar eclipse with this previous event in San Francisco and current conditions of new moon and solar eclipse on April 8, 2024 as outlined in this and previous issues of this summary:

 

"The new moon will arrive on April 8, 2024 at 18:21 UT. This involves a total eclipse of the sun which will begin in western Mexico and extend through Texas, the east-Central U.S. eastern Canada and the northeastern U.S. States of Emergency have been declared for much of the eclipse path due to expected migrations of people to view the total eclipse.  Longitudes which are at local solar noon at this time are near 100 West while those at local solar midnight area near 80 East. These include areas of central North America and the East Pacific in the west and central Asia including China, India, Nepal in the East. These areas are most likely to see moderate tidal triggering at this time. Tidal enhancement of regional seismicity is possible in many areas, however, a major earthquake associated with this new moon is considered possible in the next week by this report. Minor to moderate seismic enhancement along the path through the U.S. Mexico and Canada is likely in the next week." (April 4-7. 2024)

 

Today's activity in the San Francisco area had been anticipated to occur near the new moon on April 8 within about 10 km of these epicenters.  The smaller events had been forecast with similar precision to occur on April 6-8 in forecast 161865. This activity is near 103 degrees from recent strong earthquakes in Mindanao and Talaud Islands, Philippines and may have been promoted by energy from those sources.

 

O:  6APR2024 18:12:37  37.9N  122.3W MW=3.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  8APR2024 161866    38.0N  122.3W 2.5-4.8 AAAAA  Central California         

 

NEIC reported the earthquake of M 2.5 in Central California was felt with intensity up to III in the area(s) of  Central California in Gilroy.

 

O:  7APR2024 00:28:45  37.0N  121.6W MD=2.5  EMSC   NORTHERN CALIFORNIA          

P:  8APR2024 161865    37.1N  121.5W 2.5-4.5 AAAAA  Central California         

 

O:  6APR2024 11:55:35  37.5N  121.9W MD=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  6APR2024 161865    37.4N  121.8W 2.5-4.7 AAAAA  Central California         

 

 

NEIC reported a series of  earthquake aftershocks of M 4.8-5.0 in Taiwan were felt with intensity up to III in the area(s) of  Taiwan in Hualien, Yilan, Nantou and other counties of Taiwan. The largest of today's aftershocks was an M 5.2 felt with intensity up to V in Hualien, Taiwan. The strongest earthquake in the world today was the M 5.2 aftershock in Taiwan. This event was reported felt in Taiwan with intensity IV in Hualien, Yilan; III in Nantou, Taichung, II in Changhua, Taitung, Yunlin, Miaoli, Taoyuan and I in Tainan, Chiayi and Kaohsiung Counties, Taiwan. A listing of aftershocks today in Taiwan with M>=4.2 follows. Forecasts 161856 and 161857 had expected strongly enhanced seismicity in Taiwan around April 6-8.

 

O: 07APR2024 04:48:02  23.8N  121.6E ML=4.2  EMSC   TAIWAN

O: 06APR2024 10:47:12  23.9N  121.7E Mw=5.2  EMSC   TAIWAN

O: 06APR2024 21:15:09  24.0N  121.8E mb=4.9  EMSC   TAIWAN

O: 06APR2024 07:53:29  24.1N  121.7E ML=4.1  EMSC   TAIWAN

O: 06APR2024 22:30:50  24.1N  121.6E ML=4.0  EMSC   TAIWAN

O: 06APR2024 13:17:53  24.2N  121.8E mb=4.2  EMSC   TAIWAN

O: 06APR2024 15:43:09  24.2N  121.8E ML=4.3  EMSC   TAIWAN

O: 06APR2024 15:53:11  24.2N  121.9E Mw=4.8  EMSC   TAIWAN

O: 06APR2024 16:03:05  24.2N  121.8E ML=4.1  EMSC   TAIWAN

O: 07APR2024 02:06:00  24.2N  121.8E mb=4.6  EMSC   TAIWAN

O: 06APR2024 09:07:57  24.3N  121.7E ML=4.1  EMSC   TAIWAN

O: 06APR2024 15:46:26  24.3N  121.8E ML=4.0  EMSC   TAIWAN

O: 06APR2024 21:50:20  24.3N  121.7E ML=4.1  EMSC   TAIWAN

O:  6APR2024 08:10:25  23.8N  121.6E MW=4.1  EMSC   TAIWAN                       

P:  6APR2024 161856    23.0N  121.0E 4.0-5.5 AAAAA  Taiwan                     

P:  8APR2024 161857    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

 

The strongest earthquake in the U.S. or Canada today was an M 4.1 off the coast of Washington State, U.S. NEIC reported it was lightly felt with intensity II along the Washington coast. This earthquake is the strongest recorded in this area off the coast of Washington State since an M 4.5 on March 6, 2024 and an M 4.1 on September 25, 2023. A strong M 6.0 about 150 km north of today's epicenter occurred on April 13, 2023. At the time this summary noted:

 

 

"The strongest earthquake in the world today was an M 6.0 off the western coast of Vancouver Island, British Columbia, Canada. NEIC reported intensity I-III in British Columbia at Port Hardy, Port MacNeill, Nanaimo, Sidney, Vancouver, White Rock and in Washington State at Friday Harbor, Eastsound, Ferndale and Port Townsend among others. The last earthquake in the Vancouver Island area within about 150 km of this epicenter with M>=6 was an M 6.3 on December 25, 2019 and an M 6.0 on December 23, 2019 But the last earthquake within about 100 km of this epicenter with M>=6 was an M 6.5 on October 22, 2018." (April 13, 2023)

 

 

Forecast 161956 had expected today's event in this region was likely around

April 8, 2024.

 

O:  7APR2024 04:40:23  47.5N  129.1W MB=4.1  EMSC   OFF COAST OF WASHINGTON      

P:  8APR2024 161956    49.3N  129.0W 2.8-5.1 ABAAA  Vancouver Island area      

 

A light M 3.6-3.9 also lightly shook areas of Quebec, near Maniwaki, Canada today. The last earthquake in this area of Quebec with M>=3.9 reported by NEIC was an M 3.9 on May 9, 2020 and prior to that an M 4.1 on October 1, 2007. At the time of the 2020 event this summary noted:

 

"An earthquake of M 3.9-4.3 was also widely felt in southern Quebec, Canada today. NEIC reported intensity IV in Quebec at Ferre-Neuve, Mont-Laurier, Shawville, and II-III in Maniwaki, Pembroke, Buckingham, Ottawa, Kanata, Eganville and Chesterville. The last earthquake of M>=4.3 in southern Quebec within about 200 km of this epicenter was an M 4.4 on May 17, 2013." (May 9, 2020)

 

This epicenter is near 103 degrees from the M 7.5 in Taiwan of April 2 and the Mariana Islands of April 5, 2024 and at the third node (120 degrees) from recent strong earthquakes in the area of Mindanao, Philippines and the Loyalty Islands and at the fourth node (90 degrees) from the M 7.5 of January 1, 2024 in Honshu, Japan and may have been promoted by energy from those sources.

 

O: 07APR2024 04:39:01  47.0N   76.2W MB=3.9  ECAN NNW OF MANIWAKI, QC  

O:  7APR2024 04:39:00  47.0N   76.2W ML=3.6  EMSC   SOUTHERN QUEBEC, CANADA      

P:  6APR2024 161938    47.0N   76.0W 2.0-4.0 AAAAA  New York State             

 

Aftershocks also continued in New Jersey, U.S. following the M 4.8 there on

April 5, 2024. NEIC reported an M 2.5 today was felt with intensity V in Gladstone, New Jersey. Forecast 161936 had expected this activity was likely around April 8.

 

O:  6APR2024 10:46:39  40.7N   74.7W ML=2.5  EMSC   NEW JERSEY                   

P:  8APR2024 161936    40.0N   74.0W 2.0-4.1 AAAAA  New York State             

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 07APR2024 04:48:02  23.8N  121.6E ML=4.2  EMSC   TAIWAN

O: 06APR2024 10:47:12  23.9N  121.7E Mw=5.2  EMSC   TAIWAN

O: 06APR2024 21:15:09  24.0N  121.8E mb=4.9  EMSC   TAIWAN

O: 06APR2024 07:53:29  24.1N  121.7E ML=4.1  EMSC   TAIWAN

O: 06APR2024 22:30:50  24.1N  121.6E ML=4.0  EMSC   TAIWAN

O: 06APR2024 13:17:53  24.2N  121.8E mb=4.2  EMSC   TAIWAN

O: 06APR2024 15:43:09  24.2N  121.8E ML=4.3  EMSC   TAIWAN

O: 06APR2024 15:53:11  24.2N  121.9E Mw=4.8  EMSC   TAIWAN

O: 06APR2024 16:03:05  24.2N  121.8E ML=4.1  EMSC   TAIWAN

O: 07APR2024 02:06:00  24.2N  121.8E mb=4.6  EMSC   TAIWAN

O: 06APR2024 09:07:57  24.3N  121.7E ML=4.1  EMSC   TAIWAN

O: 06APR2024 15:46:26  24.3N  121.8E ML=4.0  EMSC   TAIWAN

O: 06APR2024 21:50:20  24.3N  121.7E ML=4.1  EMSC   TAIWAN

O:  6APR2024 08:10:25  23.8N  121.6E MW=4.1  EMSC   TAIWAN                       

P:  6APR2024 161856    23.0N  121.0E 4.0-5.5 AAAAA  Taiwan                     

P:  8APR2024 161857    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

 

O:  6APR2024 10:42:53  31.8N   71.4E ML=4.5  EMSC   PAKISTAN                     

O:  6APR2024 09:23:24  33.2N   76.8E MB=4.3  EMSC   KASHMIR-INDIA BORDER REGION  

P:  3APR2024 161890    34.0N   74.0E 3.8-5.2 BABAA  Pakistan                   

 

NEIC reported this earthquake of M 4.3 in Pakistan was felt with intensity up to III in the area(s) of  Pakistan in Dullewala.

EMSC reported severe shaking in Khushab, Pakistan.

 

O:  6APR2024 10:25:58  39.3N   72.6E MB=4.1  EMSC   TAJIKISTAN                   

P:  3APR2024 161874    39.0N   72.0E 3.8-5.5 BAAAA  Hindu Kush/Pakistan        

 

INDONESIA AND PHILIPPINES

 

O: 07APR2024 01:06:36   3.7S  124.2E ML=4.0  EMSC   BANDA SEA

O:  7APR2024 02:03:22   3.3S  123.3E ML=4.1  EMSC   SULAWESI, INDONESIA          

P: 10APR2024 161798     3.0S  126.0E 4.0-5.4 BACAA  Ceram area                 

 

O:  6APR2024 08:24:31   3.3S  138.3E MB=5.0  EMSC   PAPUA, INDONESIA             

P:  9APR2024 161816     3.0S  139.0E 4.0-5.4 BAAAA  West Irian, PNG            

 

NEIC reported this earthquake of M 5.1 in Papua New Guinea was felt with intensity up to III in the area(s) of  Papua New Guinea in Ambunti.

 

O:  6APR2024 12:25:46   4.1S  142.9E MB=5.1  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P:  3APR2024 161809     3.0S  141.0E 4.0-5.6 BBBAA  Papua New Guinea           

P:  6APR2024 161805     4.0S  145.0E 4.0-5.4 AABAA  New Ireland                

 

NEIC reported this earthquake of M 5.2 in Papua New Guinea was felt with intensity up to III in the area(s) of  Papua New Guinea in Kandrian.

 

O:  6APR2024 22:25:45   4.1S  152.7E MB=4.8  EMSC   NEW BRITAIN REGION, P.N.G.   

P:  6APR2024 161804     4.0S  152.0E 4.0-5.5 AAAAA  New Britain                

 

O:  6APR2024 09:32:53   5.4N  126.4E ML=4.2  EMSC   MINDANAO, PHILIPPINES        

P:  6APR2024 161791     6.0N  125.0E 4.0-5.4 AABAA  Mindanao, Philippines      

 

O:  6APR2024 12:24:32   5.4S  147.1E MB=4.2  EMSC   EASTERN NEW GUINEA REG., P.N.G

P:  2APR2024 161805     7.0S  147.0E 4.0-5.4 BBAAA  New Ireland                

 

O:  7APR2024 02:23:42   5.4S  153.6E MB=4.8  EMSC   NEW IRELAND REGION, P.N.G.   

P:  6APR2024 161804     4.0S  152.0E 4.0-5.5 ABBAA  New Britain                

 

O: 06APR2024 10:03:26   7.5S  128.8E ML=4.3  EMSC   KEPULAUAN BARAT DAYA, INDONESIA

P: 10APR2024 161795     7.0S  127.0E 4.0-5.4 BABAA  Banda Sea                  

 

O:  6APR2024 11:49:38  15.8N  147.0E MB=4.8  EMSC   MARIANA ISLANDS REGION       

P:  5APR2024 161835    16.0N  145.0E 4.0-5.4 AABAA  No. Marianas               

 

CENTRAL AND SOUTH AMERICA

 

O:  6APR2024 20:04:30  11.8S   75.0W ML=4.0  EMSC   CENTRAL PERU                 

P:  6APR2024 162003    11.0S   74.0W 4.0-6.0 AAAAA  Central Peru               

 

O:  6APR2024 07:16:13  12.6N   88.0W MB=4.4  EMSC   NEAR COAST OF NICARAGUA      

P:  8APR2024 161834    14.0N   88.0W 3.5-5.5 ABAAA  Nicaragua                  

 

O:  6APR2024 10:46:09  15.6N   93.4W ML=4.3  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  4APR2024 161819    14.0N   94.0W 3.5-5.3 ABAAA  Chiapas, Mexico            

 

O: 07APR2024 06:01:37  14.8N   93.8W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO

O:  6APR2024 10:41:54  16.0N   92.8W ML=4.0  EMSC   CHIAPAS, MEXICO              

P:  6APR2024 161819    15.0N   94.0W 3.5-5.8 AABAA  Chiapas, Mexico            

 

O:  6APR2024 09:12:31  17.2S   70.1W ML=4.0  EMSC   SOUTHERN PERU                

P:  7APR2024 162011    17.0S   69.0W 4.0-5.4 AAAAA  So. Peru/Bolivia           

 

O:  7APR2024 06:21:53  17.5N   68.0W MD=3.4  EMSC   DOMINICAN REPUBLIC REGION    

P:  3APR2024 161838    18.0N   68.0W 3.4-5.1 BAAAA  Puerto Rico                

 

O:  6APR2024 07:38:05  17.7N  101.8W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  7APR2024 161831    18.0N  102.0W 3.5-5.4 AAAAA  Michoacan, Mexico          

 

O: 07APR2024 02:15:03  18.2N   67.3W MD=3.3  EMSC   MONA PASSAGE, PUERTO RICO

O:  6APR2024 10:48:28  18.1N   67.5W MD=4.0  EMSC   MONA PASSAGE, PUERTO RICO    

P:  5APR2024 161838    18.0N   67.0W 3.4-5.4 AAAAA  Puerto Rico                

 

NEIC reported this earthquake of M 4.0 in Puerto Rico was felt with intensity up to IV in the area(s) of  Puerto Rico in Stella.

 

O:  6APR2024 07:12:05  19.0N   66.9W MD=3.2  EMSC   PUERTO RICO REGION           

P:  4APR2024 161839    19.0N   67.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O:  6APR2024 14:47:35  20.0N   73.3W ML=3.2  EMSC   HAITI REGION                 

P:  5APR2024 161843    19.0N   73.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O: 07APR2024 06:01:37  14.8N   93.8W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO

 

 

AFRICA AND EUROPE

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

 

O:  6APR2024 22:47:12  20.5S  175.9W MB=4.6  EMSC   TONGA                        

P:  8APR2024 162029    21.0S  177.0W 4.0-5.7 AAAAA  Tonga Islands              

P:  9APR2024 162028    20.0S  175.0W 4.0-5.6 BAAAA  Tonga Islands              

 

O:  7APR2024 02:38:40  21.9S  170.3E MW=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P:  8APR2024 162021    22.0S  169.0E 4.0-5.6 AAAAA  Loyalty Islands            

 

O:  7APR2024 00:58:24  25.9S  179.9W MB=4.4  EMSC   SOUTH OF FIJI ISLANDS        

P:  6APR2024 162029    25.0S  180.0W 4.0-5.7 AAAAA  Tonga Islands              

 

OCEAN RIDGES

 

 

O:  7APR2024 05:23:42  59.3S   17.6W MB=5.1  EMSC   EAST OF SOUTH SANDWICH ISLANDS

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 06APR2024 12:20:08  42.4S  171.1E ML=3.9  EMSC   SOUTH ISLAND OF NEW ZEALAND

O: 06APR2024 16:25:13  43.2S  170.9E ML=3.4  EMSC   SOUTH ISLAND OF NEW ZEALAND

O:  6APR2024 10:37:56  42.4S  171.1E MB=4.3  EMSC   SOUTH ISLAND OF NEW ZEALAND  

O: 06APR2024 10:37:56  42.4S  171.1E MS=5.1  GEONET South Island, New Zealand

O: 06APR2024 12:20:08  42.4S  171.1E MS=3.9  GEONET South Island, New Zealand

P:  3APR2024 162041    42.0S  173.0E 3.0-4.9 BABAA  So. Island, N.Z.           

 

GEONET reported the M 5.1 was felt with moderate intensity in the area of Greymouth, South Island, New Zealand. 1427 felt reports were published including 341 of weak and 640 of light shaking; 393 moderate; 44 strong; 2 severe and 6 extreme shaking in northern South Island.

GEONET  reported the M 3.9 was felt with moderate intensity in the area of Greymouth, South Island, New Zealand. 389 felt reports were published including  85 of weak and 216 of light shaking; 76 moderate; 9 strong; 0 severe and 2 extreme shaking in northern South Island.

NEIC reported this earthquake of M 4.3 in South Island, New Zealand was felt with intensity up to III in the area(s) of  South Island, New Zealand in Karoro.

 

O:  6APR2024 08:55:03  45.1S  167.4E ML=3.6  EMSC   SOUTH ISLAND OF NEW ZEALAND  

P:  4APR2024 162042    45.0S  168.0E 3.0-5.0 AAAAA  So. Island, N.Z.           

 

 

JAPAN AND KURIL ISLANDS

 

 

O:  7APR2024 01:41:19  47.2N  151.5E MB=4.4  EMSC   KURIL ISLANDS                

P:  4APR2024 161954    46.0N  153.0E 3.5-5.5 BBAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  6APR2024 21:28:22  30.3N  114.8W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO      

P:  6APR2024 161892    30.6N  114.6W 2.0-4.4 AAAAA  SW U.S.A                   

 

O:  7APR2024 05:36:09  33.5N  116.7W ML=2.2  EMSC   SOUTHERN CALIFORNIA          

O:  6APR2024 19:28:19  34.1N  117.5W ML=2.3  EMSC   GREATER LOS ANGELES AREA, CALI

P:  9APR2024 161895    33.9N  116.9W 2.5-4.4 BAAAA  So. California             

 

O:  6APR2024 15:16:22  36.0N  117.8W ML=2.3  EMSC   CENTRAL CALIFORNIA           

P:  6APR2024 161897    35.9N  117.7W 2.5-4.6 AAAAA  So. California             

 

O:  7APR2024 00:28:45  37.0N  121.6W MD=2.5  EMSC   NORTHERN CALIFORNIA          

P:  8APR2024 161865    37.1N  121.5W 2.5-4.5 AAAAA  Central California         

 

O:  6APR2024 11:55:35  37.5N  121.9W MD=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  6APR2024 161865    37.4N  121.8W 2.5-4.7 AAAAA  Central California         

 

O:  6APR2024 18:12:37  37.9N  122.3W MW=3.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  8APR2024 161866    38.0N  122.3W 2.5-4.8 AAAAA  Central California         

 

O:  6APR2024 21:07:52  40.0N  121.3W MD=2.2  EMSC   NORTHERN CALIFORNIA          

P:  3APR2024 161942    40.2N  121.2W 2.5-4.8 BAAAA  Northern California        

 

O:  7APR2024 00:35:07  40.4N  125.3W ML=3.2  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  9APR2024 161943    40.7N  124.6W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.4 off the coast of Northern California was felt with intensity up to III in the area(s) of  Northern California in Petrolia.

 

ALASKA

 

O:  6APR2024 15:39:12  51.8N  178.5E ML=3.7  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  6APR2024 161978    52.0N  179.0E 4.0-5.8 AAAAA  Rat Islands                 

 

O: 06APR2024 07:15:56  53.5N  164.5W ML=3.6  EMSC   UNIMAK ISLAND REGION, ALASKA

O:  6APR2024 23:00:29  53.3N  164.2W ML=3.5  EMSC   UNIMAK ISLAND REGION, ALASKA 

P:  5APR2024 161983    54.2N  165.0W 3.5-5.0 AAAAA  Unimak Islands, Aleutians  

 

NEIC reported this earthquake of M 3.6 in Fox Islands, Aleutians, Alaska was felt with intensity up to III in the area(s) of  Fox Islands, Aleutians, Alaska in Akutan.

 

O:  6APR2024 08:27:42  56.4N  153.7W ML=3.2  EMSC   KODIAK ISLAND REGION, ALASKA 

P:  4APR2024 161961    54.8N  158.7W 3.5-5.3 ABCAA  Alaska Peninsula           

 

NEIC reported this earthquake of M 3.3 in Southern Alaska was felt with intensity up to IV in the area(s) of  Southern Alaska in Skwentna.

 

O: 06APR2024 18:50:09  61.9N  150.5W ML=3.1  EMSC   SOUTHERN ALASKA

O:  7APR2024 05:43:07  62.0N  151.5W ML=3.3  EMSC   SOUTHERN ALASKA              

P:  6APR2024 161989    62.9N  151.2W 3.2-4.9 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.1 in Southern Alaska was felt with intensity up to III in the area(s) of  Southern Alaska in Willow.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  7APR2024 04:40:23  47.5N  129.1W MB=4.1  EMSC   OFF COAST OF WASHINGTON      

P:  8APR2024 161956    49.3N  129.0W 2.8-5.1 ABAAA  Vancouver Island area      

 

O:  6APR2024 21:30:47  48.1N  124.5W ML=2.0  EMSC   OLYMPIC PENINSULA, WASHINGTON

P:  7APR2024 161959    48.4N  123.2W 2.0-4.3 AAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O:  6APR2024 13:32:41  31.7N  104.2W ML=2.5  EMSC   WESTERN TEXAS                

P:  7APR2024 161891    31.6N  103.6W 2.0-4.4 AAAAA  SW U.S.A                   

 

O:  6APR2024 13:02:02  32.4N  104.6W ML=2.6  EMSC   NEW MEXICO                   

P:  4APR2024 161891    32.5N  104.6W 2.0-4.4 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O:  7APR2024 06:32:06  34.3N   97.6W ML=3.2  EMSC   OKLAHOMA                     

P:  3APR2024 161902    34.0N   98.0W 2.0-3.9 BAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.1 in Oklahoma was felt with intensity up to III in the area(s) of  Oklahoma in Healdton.

 

O:  6APR2024 10:46:39  40.7N   74.7W ML=2.5  EMSC   NEW JERSEY                   

P:  8APR2024 161936    40.0N   74.0W 2.0-4.1 AAAAA  New York State              

 

O: 07APR2024 04:39:01  47.0N   76.2W MB=3.9  ECAN NNW OF MANIWAKI, QC  

O:  7APR2024 04:39:00  47.0N   76.2W ML=3.6  EMSC   SOUTHERN QUEBEC, CANADA      

P:  6APR2024 161938    47.0N   76.0W 2.0-4.0 AAAAA  New York State             

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

STRONG EARTHQUAKE SHAKE NORTHERN MARIANA ISLANDS

 

EARTHQUAKE SUMMARY FOR APRIL 5, 2024

 

The strongest earthquake of the day was an M 6.8 in the northern Mariana Islands. NEIC reported it was felt with intensity up to IV in the Maug Islands. EMSC reported strong shaking in the Northern Mariana Islands at Kagman II, San Vicente, Dandan, San Jose, Mangilao, Guam and Kagman Vlg, Saipan. This follows a series of strong earthquakes in the area of northern Mariana Islands and Volcano Islands, Japan in the past several months including an M 6.9 on November 24, 2023 on November 24, 2023. Major earthquakes in the past 35 years hit the region at intermediate and deep focus on July 29, 2016 (M 7.7); May 14, 2013 (M 6.8); October 31, 2007 (M 7.2) and August 23, 1995 (M 7.1).

 

Forecasts 161836 abd 161858 had expected today's event was likely within about 50 km of this epicenter around April 3-7, 2024. This epicenter is at 142 degrees  from the M 6.7 in Brazil of January 20, 2024 and the sixth node (60 degrees) from the M 7.1 in Xinjiang, China of January 22, 2024 and may have been promoted by energy from those sources.

 

O:  5APR2024 11:03:15  19.1N  145.4E MW=6.8  EMSC   MAUG ISLANDS REG, N. MARIANA I

P:  3APR2024 161836    19.0N  146.0E 4.0-5.5 AAAAA  No. Marianas                

P:  7APR2024 161858    20.0N  146.0E 4.0-5.6 AAAAA  Volcano Islands            

 

An earthquake of M 4.8 occurred on April 5, 2024 in the region of New Jersey. This event was widely felt along the northeastern coast of the United States. It was followed by several moderate aftershocks. NEIC reported this earthquake was felt with maximum intensity VII in Whitehouse Station, New Jersey. EMSC reported strong shaking in New Jersey at Whitehouse Station, Somerville, Califon, Bedminster, Far Hills, Bridgewater, High Bridge, Basking Ridge among others. Also reported with moderate shaking as far as Syracuse, West Kingston, New York City, Clifton Park, Massachusetts, Maryland, Connecticut, Rhode Island, Delaware, Pennsylvania among others. In the previous issue of this summary this event had been discussed as:

 

"Regional press reported it was widely felt in New York and throughout much of northeastern U.S. This earthquake occurred near  local solar noon and was probably promoted by high tidal stresses which maximize near this hour. It was also associated with a strong geomagnetic storm which reached KP5 at this hour with maximum effects at this longitude. It is likely that this earthquake was promoted by the passage of a strong nor'easter through the region over the past two days. Nor'easters of this type have been associated with previous regionally enhanced seismicity. They can also help promote moderate to strong seismicity along the west coast of North America from Alaska to California. This relation may help explain the  correlation between moderate earthquakes in this region of New Jersey and Pennsylvania and New York. For example the previous strongest earthquake within about 200 km of this epicenter in the past 35 years occurred on January 16, 1994 hours before the M 6.7 in Northridge and Los Angeles, California.   These followed a major nor'easter which hit the area on January 4-6, 1994 and dumped as much s 13 inches of snow in the area. One of the three largest snowfall and nor'easters since record keeping began in southern Maine occurred on April 10, 1906 and dumped up to 15 inches of snow in the area. Today's storm matched that total snowfall. With this in mind a precautionary warning of possible enhanced seismicity in California is in effect for the next 10 days." (April 4, 2024)

 

Forecast 161936 had expected this activity in New Jersey was likely within about 100 km around April 8, 2024. These epicenter are at the third node (120 degrees) from the M 6.7 in Southern Vanuatu of March 27, 2024 the M 7.1 in the Loyalty Islands of December 7, 2023 and may have been promoted by energy from those sources.

 

O: 06APR2024 05:07:47  40.7N   74.7W ml=1.7  ANSS   Gladstone New Jersey

O: 06APR2024 00:51:18  40.7N   74.7W ml=1.5  ANSS   Gladstone New Jersey

O: 06APR2024 00:39:11  40.7N   74.7W ml=1.8  ANSS   Bedminster New Jersey

O: 05APR2024 23:39:23  40.7N   74.7W ml=1.5  ANSS   Whitehouse Station New Jersey

O: 05APR2024 23:10:49  40.7N   74.7W ml=1.9  ANSS   Bedminster New Jersey

O: 05APR2024 22:16:18  40.7N   74.7W ml=1.9  ANSS   Bedminster New Jersey

O: 05APR2024 21:59:13  40.7N   74.7W mw=3.8  ANSS   Gladstone New Jersey

O: 05APR2024 20:21:07  40.6N   74.7W ml=1.9  ANSS   Whitehouse Station New Jersey

O: 05APR2024 20:13:47  40.7N   74.7W ml=2.0  ANSS   Whitehouse Station New Jersey

O: 05APR2024 19:58:22  40.6N   74.7W ml=1.7  ANSS   Bridgewater New Jersey

O: 05APR2024 18:40:20  40.7N   74.8W ml=1.8  ANSS   Califon New Jersey

O: 05APR2024 17:32:13  40.6N   74.7W ml=2.2  ANSS   Whitehouse Station New Jersey

O: 05APR2024 17:21:55  40.7N   74.8W ml=1.9  ANSS   Califon New Jersey

O: 05APR2024 17:18:48  40.7N   74.7W ml=2.0  ANSS   Chester New Jersey

O: 05APR2024 17:14:13  40.7N   74.7W ml=2.0  ANSS   Chester New Jersey

O: 05APR2024 16:49:49  40.7N   74.7W ml=1.8  ANSS   Whitehouse Station New Jersey

O: 05APR2024 16:31:50  40.7N   74.7W ml=1.8  ANSS   Bedminster New Jersey

O: 05APR2024 15:37:10  40.7N   74.8W ml=1.8  ANSS   Califon New Jersey

O: 05APR2024 15:33:15  40.7N   74.8W ml=1.9  ANSS   Califon New Jersey

O: 05APR2024 15:27:56  40.7N   74.8W ml=1.9  ANSS   Whitehouse Station New Jersey

O: 05APR2024 15:20:20  40.7N   74.7W ml=2.0  ANSS   Whitehouse Station New Jersey

O: 05APR2024 14:23:20  40.7N   74.8W mr=4.8  ANSS   Station New Jersey Earthquake

O:  5APR2024 21:59:13  40.7N   74.7W MW=3.8  EMSC   NEW JERSEY                   

P:  8APR2024 161936    40.0N   74.0W 2.0-4.1 BAAAA  New York State             

 

 

An earthquake of M 5.8 also occurred today in the India-Myanmar border region.

NEIC reported it was felt with intensity up to M 5.8 in Sarupathar, India.

EMSC reported moderate shaking in India at Duliajan, Na Pukhuri, Sisibargaon, Tarapur, Old Ziro. The last earthquake in Myanmar within about 300 km of today's epicenter occurred on May 31, 2023 with M 5.8 but the last within about 200 km was an M 6.3 on June 7, 2000. A pair of events of M 5.8 and M 5.9 occurred about 200 km southwest of today's epicenter late May, 2014. At the time this summary noted:

 

 

"A moderately large earthquake of M 5.9-6.0 hit the region of Myanmar and southern China today. Initial reports indicate it was felt along the China-Myanmar border near Yunnan Province in China and Myitkyina, capital of the Kachin state in North Myanmar. This may be an aftershock of the earthquake of M 5.6 that hit near this area a week ago injuring 13 people. Many people fled their homes and offices during the quake and web posted pictures showed people standing outside office buildings in Mang, Yingjiang county. The quakes was felt strongly in the epicentral area according to social media posters. EMSC reported light shaking as far away as Bangkok, Thailand. Light to moderate damage may have occurred in Kachang township, China. CENC gave the earthquake M 6.1. NEIC reported the quake was felt with intensity V-VII. The region has been hit by strong rainstorms in recent days, leftover from the tropical storm which formed last week in the Bay of Bengal, and the first tropical storm of the season. These storms have caused major damage in the region. The first tropical storms have the most impact on triggered seismicity as areas which have accumulated stress during quiet weather may release it with major storms. This earthquake was also highly stressed by yesterday's new moon tides." (May 30, 2014)

 

Forecast 161850 had expected today's event was likely within this area around

April 1.

 

O:  5APR2024 12:45:32  26.6N   97.0E MB=5.8  EMSC   MYANMAR                      

P:  1APR2024 161850    25.0N   97.0E 4.0-5.8 BBAAA  Myanmar                    

 

Aftershocks continued in central and northern Taiwan today. The largest of these was an M 5.0 felt with intensity up to V throughout much of the island with maximum shaking in Hualien, Yilan and Nantou counties. These area aftershocks of the M 7.5 in Taiwan of April 2.

 

Forecasts 161857 and 161856  had expected this activity in Taiwan was likely around April 4-6, 2024.  This activity is at the fourth node (90 degrees) from the Macquarie  Island M 6.7 of March 3, 2024 and may have been promoted by energy from that source.             

 

O: 05APR2024 18:49:23  23.9N  122.0E Mw=4.6  EMSC   TAIWAN

O: 05APR2024 20:26:26  23.9N  121.8E Mw=4.8  EMSC   TAIWAN

O: 06APR2024 06:02:18  23.9N  121.8E ML=4.6  EMSC   TAIWAN

O: 05APR2024 09:04:57  24.0N  121.7E Mw=4.3  EMSC   TAIWAN

O: 05APR2024 21:34:12  24.0N  121.7E mb=4.5  EMSC   TAIWAN

O: 05APR2024 10:08:50  24.1N  121.7E ML=4.1  EMSC   TAIWAN

O: 05APR2024 13:34:31  24.1N  121.7E ML=4.0  EMSC   TAIWAN

O: 05APR2024 16:14:51  24.1N  121.8E ML=4.2  EMSC   TAIWAN

O: 05APR2024 17:17:18  24.1N  121.6E ML=4.0  EMSC   TAIWAN

O: 05APR2024 20:12:11  24.1N  121.7E ML=4.4  EMSC   TAIWAN

O: 05APR2024 22:53:17  24.1N  121.7E ML=4.1  EMSC   TAIWAN

O: 05APR2024 09:53:36  24.2N  121.8E ML=4.1  EMSC   TAIWAN

O: 05APR2024 12:59:12  24.2N  121.8E mb=4.6  EMSC   TAIWAN

O: 05APR2024 15:00:38  24.2N  121.8E mb=4.9  EMSC   TAIWAN

O: 05APR2024 16:19:15  24.2N  121.8E ML=4.2  EMSC   TAIWAN

O: 06APR2024 03:52:55  24.2N  121.7E mb=4.9  EMSC   TAIWAN

O: 06APR2024 05:25:22  24.2N  121.7E ML=4.2  EMSC   TAIWAN

O:  6APR2024 01:37:49  23.6N  122.0E MB=5.0  EMSC   TAIWAN REGION                

P:  4APR2024 161857    24.0N  121.0E 4.0-6.4 AAAAA  Taiwan                     

P:  6APR2024 161856    23.0N  121.0E 4.0-5.5 AAAAA  Taiwan                     

 

 

A moderately large earthquake also occurred off northern Honshu, Japan today with M 5.4 It was lightly felt in the region of northern Honshu. This may be a regional aftershock of the M 5.9 that occurred about 200 km southwest of this epicenter on April 1. At the time this summary noted:

 

 

"The strongest earthquake in the world today occurred in northern Honshu, Japan. NEIC reported it was felt with intensity up to VII in Northern Honshu in Kuji. The last earthquake with equal or larger magnitude within about 150 km of this epicenter occurred on May 5, 2023 with M 5.9." (April 1, 2024)

 

Forecast 161920 had expected today's event within about 100 km of this epicenter was likely around April 8, 2024. This epicenter is at 102 degrees from the M 6.7 in the region of Macquarie Island of March 3, 2024 and may have been promoted by energy from that source.

 

O:  6APR2024 00:12:17  40.9N  143.2E MW=5.4  EMSC   OFF EAST COAST OF HONSHU,    

O: 06APR2024 00:12:17  40.9N  143.2E mw=5.4  ANSS   S of Honch┼ì Japan

P:  8APR2024 161920    40.0N  143.0E 3.5-5.4 AAAAA  Hokkaido, Japan            

 

An M 5.6 also shook regions of northern Tonga where it may have been lightly felt in Neiafu, Tonga. Forecast 162013 had expected this event within about 25 km was likely around April 5. This activity is at the fifth node (72 degrees) from the M 7.5 in western Honshu, Japan of January 1, 2024 and may have been promoted by energy from that source. Other activity at this distance from Honshu today includes a series in Iran and a light quake off the coast of Oregon.

 

O:  5APR2024 20:32:13  18.3S  174.6W MW=5.6  EMSC   TONGA                        

O: 05APR2024 20:32:12  18.2S  174.2W mw=5.6  ANSS   NNW of Neiafu Tonga

P:  5APR2024 162013    18.0S  174.0W 4.0-5.6 AAAAA  Tonga Islands              

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O:  5APR2024 12:45:32  26.6N   97.0E MB=5.8  EMSC   MYANMAR                      

P:  1APR2024 161850    25.0N   97.0E 4.0-5.8 BBAAA  Myanmar                    

 

O:  6APR2024 02:29:23  27.3N  103.5E MB=5.0  EMSC   SICHUAN-YUNNAN-GUIZHOU RG, CHI

P: 30MAR2024 161588    26.0N  101.0E 4.0-5.5 CBBAA  Myanmar                    

 

NEIC reported this earthquake of M 5.0 in Sichuan, China was felt with intensity up to III in the area(s) of  Sichuan, China in Zhaotong.

 

O:  5APR2024 22:50:07  34.4N   69.3E MB=4.6  EMSC   CENTRAL AFGHANISTAN          

P:  3APR2024 161873    35.0N   70.0E 3.8-5.2 AAAAA  Hindu Kush/Pakistan        

 

EMSC reported this earthquake of M 4.5 in Afghanistan was felt with intensity up to III in the area(s) of  Afghanistan in Kabul, Hazara-L-Baghal.

 

O:  5APR2024 08:58:33  31.0N   49.4E ML=4.2  EMSC   WESTERN IRAN                 

O: 05APR2024 08:45:54  31.1N   49.5E mb=4.6  EMSC   WESTERN IRAN

O: 05APR2024 08:54:09  31.1N   49.4E mb=4.4  EMSC   WESTERN IRAN

O: 05APR2024 09:01:37  31.3N   49.5E mb=4.4  EMSC   WESTERN IRAN

P:  8APR2024 161855    29.0N   51.0E 3.5-5.1 BBBAA  So. Iran/Persian Gulf      

 

EMSC reported this earthquake of M 4.5 in Western Iran was felt with intensity up to III in the area(s) of  Western Iran in Ramhormoz, Ahvaz. 

 

O:  5APR2024 17:40:19  53.2N  160.0E MB=3.9  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  4APR2024 161970    53.0N  159.0E 4.0-5.8 AAAAA  Kamchatka                  

P:  5APR2024 161968    54.0N  161.0E 4.0-5.5 AAAAA  E. of Kamchatka            

 

O:  6APR2024 06:47:08  59.5N  165.0E MB=4.5  EMSC   KAMCHATKA PENINSULA, RUSSIA  

P:  7APR2024 161971    55.0N  165.0E 4.0-5.9 ACAAA  Komandorsky Isl            

 

O: 05APR2024 18:49:23  23.9N  122.0E Mw=4.6  EMSC   TAIWAN

O: 05APR2024 20:26:26  23.9N  121.8E Mw=4.8  EMSC   TAIWAN

O: 06APR2024 06:02:18  23.9N  121.8E ML=4.6  EMSC   TAIWAN

O: 05APR2024 09:04:57  24.0N  121.7E Mw=4.3  EMSC   TAIWAN

O: 05APR2024 21:34:12  24.0N  121.7E mb=4.5  EMSC   TAIWAN

O: 05APR2024 10:08:50  24.1N  121.7E ML=4.1  EMSC   TAIWAN

O: 05APR2024 13:34:31  24.1N  121.7E ML=4.0  EMSC   TAIWAN

O: 05APR2024 16:14:51  24.1N  121.8E ML=4.2  EMSC   TAIWAN

O: 05APR2024 17:17:18  24.1N  121.6E ML=4.0  EMSC   TAIWAN

O: 05APR2024 20:12:11  24.1N  121.7E ML=4.4  EMSC   TAIWAN

O: 05APR2024 22:53:17  24.1N  121.7E ML=4.1  EMSC   TAIWAN

O: 05APR2024 09:53:36  24.2N  121.8E ML=4.1  EMSC   TAIWAN

O: 05APR2024 12:59:12  24.2N  121.8E mb=4.6  EMSC   TAIWAN

O: 05APR2024 15:00:38  24.2N  121.8E mb=4.9  EMSC   TAIWAN

O: 05APR2024 16:19:15  24.2N  121.8E ML=4.2  EMSC   TAIWAN

O: 06APR2024 03:52:55  24.2N  121.7E mb=4.9  EMSC   TAIWAN

O: 06APR2024 05:25:22  24.2N  121.7E ML=4.2  EMSC   TAIWAN

O:  6APR2024 01:37:49  23.6N  122.0E MB=5.0  EMSC   TAIWAN REGION                

P:  4APR2024 161857    24.0N  121.0E 4.0-6.4 AAAAA  Taiwan                     

P:  6APR2024 161856    23.0N  121.0E 4.0-5.5 AAAAA  Taiwan                     

 

INDONESIA AND PHILIPPINES

 

O: 06APR2024 06:03:13   0.1S  123.7E ML=4.0  EMSC   SULAWESI, INDONESIA

O:  6APR2024 00:37:28   0.2S  124.6E ML=4.2  EMSC   MOLUCCA SEA                  

P:  6APR2024 161791     1.0N  124.0E 4.0-5.5 ABAAA  Mindanao, Philippines      

 

O:  5APR2024 16:13:20   0.5N   98.5E MB=4.8  EMSC   NIAS REGION, INDONESIA       

P:  8APR2024 161793     1.0N   98.0E 4.0-5.6 BAAAA  So. Sumatera               

 

O:  6APR2024 02:08:23   3.3S  123.4E ML=4.0  EMSC   SULAWESI, INDONESIA          

P: 10APR2024 161798     3.0S  126.0E 4.0-5.4 BACAA  Ceram area                 

 

O:  5APR2024 21:21:37   5.9N  126.8E ML=4.2  EMSC   MINDANAO, PHILIPPINES        

P:  6APR2024 161791     6.0N  125.0E 4.0-5.4 AABAA  Mindanao, Philippines      

P:  8APR2024 161790     5.0N  128.0E 4.0-5.4 BAAAA  Halmahera                  

 

O:  6APR2024 00:48:12   6.7S  128.4E ML=4.4  EMSC   BANDA SEA                    

O:  5APR2024 17:25:22   7.8S  127.9E ML=4.4  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P:  4APR2024 161795     6.0S  128.0E 4.0-5.4 AAAAA  Banda Sea                  

P: 10APR2024 161795     7.0S  127.0E 4.0-5.4 BAAAA  Banda Sea                  

 

O:  5APR2024 11:03:15  19.1N  145.4E MW=6.8  EMSC   MAUG ISLANDS REG, N. MARIANA I

P:  3APR2024 161836    19.0N  146.0E 4.0-5.5 AAAAA  No. Marianas               

P:  7APR2024 161858    20.0N  146.0E 4.0-5.6 AAAAA  Volcano Islands            

 

 

BMG  reported an earthquake of M 5.2 in Papua New Guinea was felt with intensity up to III in the area(s) of  Papua New Guinea in Kab. Jayawiya, Puncak Jaya and Tolikara.

 

 

CENTRAL AND SOUTH AMERICA

 

O:  5APR2024 12:07:47   6.8N   73.0W MB=4.8  EMSC   NORTHERN COLOMBIA            

P:  6APR2024 161788     7.0N   73.0W 4.0-6.3 AAAAA  Colombia                   

 

O:  5APR2024 12:09:24   7.6S   74.8W ML=4.0  EMSC   NORTHERN PERU                

P:  4APR2024 161796     8.0S   74.0W 3.5-5.0 AAAAA  Brazil                     

 

O: 05APR2024 13:48:43  13.7N   93.2W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO

O:  5APR2024 09:01:54  15.4N   93.6W MW=5.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  6APR2024 161819    15.0N   94.0W 3.5-5.8 AAAAA  Chiapas, Mexico            

 

O:  5APR2024 20:07:16  16.7S   69.4W ML=4.0  EMSC   SOUTHERN PERU                

P:  7APR2024 162011    17.0S   69.0W 4.0-5.4 AAAAA  So. Peru/Bolivia           

 

O:  5APR2024 07:39:15  18.6N   67.6W MD=3.1  EMSC   PUERTO RICO REGION           

P:  5APR2024 161838    18.0N   67.0W 3.4-5.4 AAAAA  Puerto Rico                

 

O:  6APR2024 06:07:49  18.6N   69.0W ML=3.1  EMSC   DOMINICAN REPUBLIC           

P:  7APR2024 161839    18.0N   69.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 06APR2024 05:57:38  18.8N   64.4W MD=3.6  EMSC   VIRGIN ISLANDS REGION

O:  6APR2024 06:36:13  18.9N   65.2W MD=3.3  EMSC   PUERTO RICO REGION           

P:  5APR2024 161842    20.0N   65.0W 3.0-4.6 ABAAA  Bahamas/No. Caribbean      

 

O:  5APR2024 17:30:57  18.9N   73.9W ML=3.4  EMSC   HAITI REGION                 

P:  5APR2024 161843    19.0N   73.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O:  6APR2024 03:33:01  19.2N   67.7W MD=3.3  EMSC   PUERTO RICO REGION           

P:  4APR2024 161839    19.0N   67.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O:  5APR2024 09:33:11  19.5N   73.1W ML=3.3  EMSC   HAITI REGION                  

P:  5APR2024 161843    19.0N   73.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O: 06APR2024 05:41:48  18.7N   69.5W ML=3.2  EMSC   DOMINICAN REPUBLIC

O:  6APR2024 06:27:53  19.7N   70.0W ML=3.1  EMSC   DOMINICAN REPUBLIC           

P:  7APR2024 161843    20.0N   71.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O:  5APR2024 20:01:28  27.7N  112.0W ML=3.8  EMSC   GULF OF CALIFORNIA           

P:  2APR2024 161845    26.0N  111.0W 3.5-5.2 BBAAA  Gulf of California         

P:  6APR2024 161845    25.0N  113.0W 3.5-5.2 ACAAA  Gulf of California         

 

AFRICA AND EUROPE

 

O:  5APR2024 17:26:23  23.6S   31.3E ML=3.4  EMSC   SOUTH AFRICA                 

P: 29MAR2024 161756    22.0S   33.0E 4.0-5.5 CBBAA  So. Indian Ocean           

 

O:  5APR2024 07:48:02  36.6N    7.3W ML=3.0  EMSC   STRAIT OF GIBRALTAR          

P:  7APR2024 161879    37.0N   10.0W 3.5-5.4 AABAA  Morocco/Spain              

 

SOUTHWEST PACIFIC

 

O:  5APR2024 18:57:24  11.0S  161.4E MB=4.7  EMSC   SOLOMON ISLANDS              

P:  3APR2024 162015    11.0S  161.0E 4.0-5.4 AAAAA  Vanuatu Islands            

 

O:  5APR2024 20:32:13  18.3S  174.6W MW=5.6  EMSC   TONGA                        

O: 05APR2024 20:32:12  18.2S  174.2W mw=5.6  ANSS   NNW of Neiafu Tonga

P:  5APR2024 162013    18.0S  174.0W 4.0-5.6 AAAAA  Tonga Islands              

 

O:  5APR2024 13:34:39  19.3S  177.4W MB=4.5  EMSC   FIJI REGION                  

P:  5APR2024 162014    18.0S  177.0W 4.0-5.4 ABAAA  Tonga Islands              

 

O:  6APR2024 01:22:15  20.5S  177.6W MB=4.4  EMSC   FIJI REGION                  

P:  4APR2024 162029    20.0S  178.0W 4.0-5.6 AAAAA  Tonga Islands              

 

O:  6APR2024 02:09:54  25.6S  179.9E MB=4.8  EMSC   SOUTH OF FIJI ISLANDS        

P:  3APR2024 162031    25.0S  179.0E 4.0-5.8 BAAAA  Tonga/Fiji                 

 

O:  5APR2024 23:35:25  23.4S  170.8E MB=4.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P:  3APR2024 162021    23.0S  169.0E 4.0-5.4 AABAA  Loyalty Islands            

 

 

OCEAN RIDGES

 

O:  6APR2024 06:31:14   4.0S  103.0W MB=5.0  EMSC   CENTRAL EAST PACIFIC RISE    

P:  6APR2024 161806     4.0S  104.0W 4.0-5.4 AAAAA  No. East Pacific Rise      

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  6APR2024 02:11:17  33.0S  178.3E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  6APR2024 162039    34.0S  180.0E 4.0-5.7 AABAA  So. Kermadec Islands       

 

O:  5APR2024 16:25:29  34.9S  179.7E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  6APR2024 162039    34.0S  180.0E 4.0-5.7 AAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O:  6APR2024 01:13:39  25.8N  128.4E MB=4.7  EMSC   RYUKYU ISLANDS, JAPAN        

P:  2APR2024 161853    26.0N  128.0E 4.0-5.6 BAAAA  Ryukyu Islands             

 

NEIC reported this earthquake of M 4.7 in Ryukyu Islands, Japan was felt with intensity up to III in the area(s) of  Ryukyu Islands, Japan in Yonabaru.

 

O:  6APR2024 00:12:17  40.9N  143.2E MW=5.4  EMSC   OFF EAST COAST OF HONSHU,    

O: 06APR2024 00:12:17  40.9N  143.2E mw=5.4  ANSS   S of Honch┼ì Japan

P:  8APR2024 161920    40.0N  143.0E 3.5-5.4 AAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 05APR2024 08:13:05  33.9N  116.7W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O:  5APR2024 18:45:42  33.3N  116.4W ML=2.5  EMSC   SOUTHERN CALIFORNIA          

P:  5APR2024 161894    33.7N  116.1W 2.5-4.5 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.6 in Southern California was felt with intensity up to IV in the area(s) of  Southern California in Borrego Springs.

 

O:  5APR2024 20:00:20  35.7N  117.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA          

P:  2APR2024 161897    35.8N  117.6W 2.5-4.7 BAAAA  So. California             

 

O:  6APR2024 05:21:06  36.8N  117.7W ML=2.1  EMSC   CENTRAL CALIFORNIA           

P:  7APR2024 161860    36.9N  117.4W 2.5-4.4 AAAAA  California/Nevada area     

 

O: 05APR2024 10:26:15  40.0N  121.3W MD=2.6  EMSC   NORTHERN CALIFORNIA

O: 05APR2024 10:46:46  40.0N  121.3W MD=2.9  EMSC   NORTHERN CALIFORNIA

O:  5APR2024 10:12:56  40.0N  121.3W MD=2.2  EMSC   NORTHERN CALIFORNIA          

P:  3APR2024 161942    40.2N  121.2W 2.5-4.8 AAAAA  Northern California        

 

NEIC reported this earthquake of M 2.9 in Northern California was felt with intensity up to III in the area(s) of  Northern California in Belden.

 

ALASKA

 

O:  5APR2024 11:16:40  51.0N  179.6E ML=3.2  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  6APR2024 161978    52.0N  179.0E 4.0-5.8 AAAAA  Rat Islands                 

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  5APR2024 09:49:44  45.6N  120.2W ML=2.1  EMSC   OREGON                       

P:  4APR2024 161958    47.7N  120.3W 2.0-4.0 ACAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O:  5APR2024 11:15:24  41.2N  112.0W ML=2.6  EMSC   WASATCH FRONT URBAN AREA, UTAH

P:  7APR2024 161908    39.6N  111.9W 2.0-4.0 ABAAA  Utah area                  

 

O:  5APR2024 11:15:26  44.8N  111.1W ML=2.9  EMSC   YELLOWSTONE NAT. PARK, MONTANA

P:  5APR2024 161960    44.4N  110.4W 2.0-4.1 AAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

 

O: 06APR2024 05:07:47  40.7N   74.7W ml=1.7  ANSS   Gladstone New Jersey

O: 06APR2024 00:51:18  40.7N   74.7W ml=1.5  ANSS   Gladstone New Jersey

O: 06APR2024 00:39:11  40.7N   74.7W ml=1.8  ANSS   Bedminster New Jersey

O: 05APR2024 23:39:23  40.7N   74.7W ml=1.5  ANSS   Whitehouse Station New Jersey

O: 05APR2024 23:10:49  40.7N   74.7W ml=1.9  ANSS   Bedminster New Jersey

O: 05APR2024 22:16:18  40.7N   74.7W ml=1.9  ANSS   Bedminster New Jersey

O: 05APR2024 21:59:13  40.7N   74.7W mw=3.8  ANSS   Gladstone New Jersey

O: 05APR2024 20:21:07  40.6N   74.7W ml=1.9  ANSS   Whitehouse Station New Jersey

O: 05APR2024 20:13:47  40.7N   74.7W ml=2.0  ANSS   Whitehouse Station New Jersey

O: 05APR2024 19:58:22  40.6N   74.7W ml=1.7  ANSS   Bridgewater New Jersey

O: 05APR2024 18:40:20  40.7N   74.8W ml=1.8  ANSS   Califon New Jersey

O: 05APR2024 17:32:13  40.6N   74.7W ml=2.2  ANSS   Whitehouse Station New Jersey

O: 05APR2024 17:21:55  40.7N   74.8W ml=1.9  ANSS   Califon New Jersey

O: 05APR2024 17:18:48  40.7N   74.7W ml=2.0  ANSS   Chester New Jersey

O: 05APR2024 17:14:13  40.7N   74.7W ml=2.0  ANSS   Chester New Jersey

O: 05APR2024 16:49:49  40.7N   74.7W ml=1.8  ANSS   Whitehouse Station New Jersey

O: 05APR2024 16:31:50  40.7N   74.7W ml=1.8  ANSS   Bedminster New Jersey

O: 05APR2024 15:37:10  40.7N   74.8W ml=1.8  ANSS   Califon New Jersey

O: 05APR2024 15:33:15  40.7N   74.8W ml=1.9  ANSS   Califon New Jersey

O: 05APR2024 15:27:56  40.7N   74.8W ml=1.9  ANSS   Whitehouse Station New Jersey

O: 05APR2024 15:20:20  40.7N   74.7W ml=2.0  ANSS   Whitehouse Station New Jersey

O: 05APR2024 14:23:20  40.7N   74.8W mr=4.8  ANSS   Station New Jersey Earthquake

O:  5APR2024 21:59:13  40.7N   74.7W MW=3.8  EMSC   NEW JERSEY                   

P:  8APR2024 161936    40.0N   74.0W 2.0-4.1 BAAAA  New York State             

 

O:  6APR2024 05:17:30  36.1N   97.8W ML=3.0  EMSC   OKLAHOMA                     

P:  8APR2024 161903    36.0N   97.0W 2.0-4.2 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.0 in Oklahoma was felt with intensity up to IV in the area(s) of  Oklahoma in Hennessey.

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

MODERATE QUAKE SHAKES NORTHEASTERN U.S.A.

 

EARTHQUAKE SUMMARY FOR APRIL 4, 2024

 

 

An earthquake of M 4.7-4.8 occurred on April 5, 2024 in the region of New Jersey. This event was widely felt along the northeastern coast of the United States. It was followed by several moderate aftershocks. NEIC reported this earthquake was felt with maximum intensity VII in Whitehouse Station, New Jersey. EMSC reported strong shaking in New Jersey at Whitehouse Station, Somerville, Califon, Bedminster, Far Hills, Bridgewater, High Bridge, Basking Ridge among others. Also reported with moderate shaking as far as Syracuse, West Kingston, New York City, Clifton Park, Massachusetts, Connecticut, Rhode Island, Delaware, Maryland, Pennsylvania among others.  Regional press reported it was widely felt in New York and throughout much of northeastern U.S. This earthquake occurred near  local solar noon and was probably promoted by high tidal stresses which maximize near this hour. It was also associated with a strong geomagnetic storm which reached KP5 at this hour with maximum effects at this longitude. It is likely that this earthquake was promoted by the passage of a strong nor'easter through the region over the past two days. Nor'easters of this type have been associated in this summary with previous regionally enhanced seismicity. They can also help promote moderate to strong seismicity along the west coast of North America from Alaska to California. This relation may help explain the correlation between moderate earthquakes in this region of New Jersey and Pennsylvania and New York. For example the previous strongest earthquake within about 200 km of this epicenter in the past 35 years occurred on January 16, 1994 hours before the M 6.7 in Northridge and Los Angeles, California.   These followed a major nor'easter which hit the area on January 4-6, 1994 and dumped as much s 13 inches of snow in the area. One of the three largest snowfall and nor'easters since record keeping began in southern Maine occurred on  April 10, 1906 and dumped up to 15 inches of snow in the area. Today's storm matched that total snowfall. With this in mind a precautionary warning of possible enhanced seismicity in California is in effect for the next 10 days.

 

Forecast 161936 had expected this earthquake was likely within about 75 km was likely around April 8, 2024. These earthquakes are located at 142 degrees from the M 6.7 in Macquarie Islands of March 3, 2024 (and aftershocks) and at the third node (120 degrees) from the Vanuatu Islands event of M 6.7 of March 27, 2024 and may have been promoted by energy from those sources.

 

O: 05APR2024 21:59:13  40.7N   74.7W mb=4.0  ANSS   Gladstone New Jersey

O: 05APR2024 18:40:20  40.7N   74.8W ml=1.8  ANSS   Califon New Jersey

O: 05APR2024 17:32:13  40.6N   74.7W ml=2.2  ANSS   Whitehouse Station New Jersey

O: 05APR2024 17:21:55  40.7N   74.8W ml=1.9  ANSS   Califon New Jersey

O: 05APR2024 17:18:48  40.7N   74.7W ml=2.0  ANSS   Chester New Jersey

O: 05APR2024 17:14:13  40.7N   74.7W ml=2.0  ANSS   Chester New Jersey

O: 05APR2024 16:49:49  40.7N   74.7W ml=1.8  ANSS   Whitehouse Station New Jersey

O: 05APR2024 16:31:50  40.7N   74.7W ml=1.8  ANSS   Bedminster New Jersey

O: 05APR2024 15:49:36  40.7N   74.8W ml=2.0  ANSS   Long Valley New Jersey

O: 05APR2024 15:37:10  40.7N   74.8W ml=1.8  ANSS   Califon New Jersey

O: 05APR2024 15:33:14  40.7N   74.8W ml=1.9  ANSS   Califon New Jersey

O: 05APR2024 15:20:20  40.7N   74.7W ml=2.0  ANSS   Whitehouse Station New Jersey

O: 05APR2024 14:23:20  40.7N   74.8W mw=4.8  ANSS   Whitehouse Station New Jersey

O:  5APR2024 14:23:21  40.7N   74.8W MB=4.7  ECAN OF NEWARK, NJ                  

P:  8APR2024 161936    40.0N   74.0W 2.0-4.1 BAAAA  New York State             

P:  8APR2024 161936    40.0N   76.0W 2.0-3.9 BAAAA  New York State             

 

 

The second strongest earthquake in the U.S. or Canada today was an M 4.5 in northern California followed by an M 4.3. EMSC reported it was felt with moderate intensity in Northern California at Magalia, Paradise, Chico, Oroville, Blairsden Graeagle, Susanville, Nevada City, Grass Valley, Smartsville, Alta, Yuba City, Olivehurst, Colfax, Foresthill, Cool, Antelope, Citrus Heights, North Highlands, Folsom, Shingle Springs, Fair Oaks, Sacramento, Lockeford, Stockton.  NEIC reported these earthquakes of M 4.4, 4.2, 2.7 in Northern California were felt with intensity up to V in the area(s) of  Northern California in Belden.  These earthquake occurred while a strong nor'easter was hitting New England. In a number of previous issues, this summary has noted the correspondence of significant earthquakes in northern California with nor'easters in New England. The most recent discussion followed a smaller nor'easter on March 26 as follows:

 

"The strongest earthquake in the U.S. or Canada today was an M 5.7 off the coast of Oregon. NEIC reported it was felt with intensity up to III along the coast of Oregon, especially in the Port Orford area. EMSC reported light shaking in Springfield, Oregon. A foreshock of M 3.0 hit the area within minutes of local solar noon about 12 hours earlier and was felt in the Port Orford, Oregon area.  These earthquake occurred near local solar noon and midnight and may have been promoted by tidal stresses with the full moon of March 25

 

 

Earthquakes in this area often accompany or follow shortly after strong nor'easter storms in the northeastern U.S. Such a storm occurred over the past three days bringing ice and power outages throughout the area. This summary has noted this correlation on a number of previous occasions. For example on January 29, 2022 this summary noted:

 

"...This may have been promoted by movement of the North American plate associated with the massive nor'easter off the east coast of North America today. This system dumped a foot of snow on Boston, the most ever reported in that city in a 24-hour period. This summary had expected this type of seismic response to this storm in the previous issue as:

 

" ... a major nor'easter is beginning to progress up the eastern coast of the U.S. It may hit the Boston area with record snows today and on Saturday, January 29, 2022. Such nor'easters are often associated with a strong enhancement of seismicity along the western North American tectonic plate. A precautionary seismic watch is being called by this summary for this region through February 2, 2022." (January 27, 2022)

 

The last earthquakes with M>=5.7 off the coast of Oregon occurred on June 4, 2021 (M 5.9) and December 8, 2021 (M 5.8). This event also followed a full moon and was likely promoted by tidal stresses associated with that alignment as explained in  this summary at the time:

 

"A strong series of earthquakes occurred off the coast of Oregon today at 120-130 West longitude. These events were reported lightly felt on the coast of Oregon including at Waldport, Eugene and Beaverton. The largest of these was M 5.8 which was felt with intensity II-III in Oregon in  Depoe Bay, Newport, Florence, Waldport, Hammond, Tualatin, Medford, Cloverdale, Seaside, Sheridan, Forest Grove, Springfield, Portland and as far as southern Washington State.

Other moderately large events of M 5.5, 5.5, 5.5, 5.5, 5.8, 5.3 ... also were recorded in this series. The last earthquakes of M>=5.8 in this area off the coast of Oregon occurred in August and September, 2019 with M 6.3 and 5.9 and as an M 6.2 on August 22, 2018 and an M 5.9 on August 22, 2018. The M 6.3 on August 29, 2019 is the strongest event in this area in the past 30 years. Today's activity appears to be occurring in the volcanic vents off the coast of Oregon. It is likely that this series was promoted by high tidal stresses associated with the new moon/eclipse of December 4." (December 8, 2021, March 26, 2024)

 

Today's earthquake in Northern California is the strongest within about 150 km  of that epicenter since an M 5.5 and 5.2 occurred on May 11, 2023 with a regional aftershock on September 8, 2023. In May, 2023 this summary discussed those earthquakes as:

 

"The strongest earthquake in the U.S. or Canada today was an 5.5 in Northern California. NEIC reported this earthquake was widely felt in northern California and Nevada with maximum intensity VI in Westwood, Chester and Greenville, California, V in Twain, Mineral,  California and IV in Quincy Meadow Valley, Forest Ranch, Janesville and Magalia and Taylorsville and II-III in Forest Ranch, Mineral, Janesville, Magalia, Comptonville, Chico and as far as Reno and Las Vegas, Nevada and in southern Oregon.

 

...

 

The only event within about 150 km of today's epicenter with M>=5.5 in the past 35 years was an M 5.7 on May 24, 2013 within about 10 km of today's epicenter." (May 12, 2023)

 

Forecast 161942 had expected a moderate aftershock within about 25 km of today's epicenter was likely around April 3, 2024. These earthquakes are at 103 degrees from recent major earthquakes in the region of Talaud and Mindanao, Philippines and may have been promoted by energy from these sources.

 

O: 05APR2024 01:34:49  40.0N  121.3W mb=4.3  EMSC   NORTHERN CALIFORNIA

O: 05APR2024 01:44:08  40.0N  121.3W MD=2.2  EMSC   NORTHERN CALIFORNIA

O: 05APR2024 02:03:34  40.0N  121.3W MD=2.6  EMSC   NORTHERN CALIFORNIA

O:  5APR2024 01:34:25  40.0N  121.3W MW=4.5  EMSC   NORTHERN CALIFORNIA          

P:  3APR2024 161942    40.2N  121.2W 2.5-4.8 AAAAA  Northern California        

 

 

A moderate earthquake of M 4.4 followed by an M 3.4 seconds later occurred today in the Fox Islands, Alaska.  NEIC reported this earthquake of M 4.4 and 4.2 in Unalaska, Alaska was felt with intensity up to III in the area(s) of  Unalaska, Alaska.  An earthquake of M 5.6 hit near this epicenter on November 28, 2023. At the time this summary noted:

 

 

"The strongest earthquake in the U.S. or Canada today was an M 5.5-5.6 in the area of the Fox Islands, Aleutians, Alaska. News sources indicated the quake was felt throughout the Fox Islands and the Aleutians. No tsunami was expected or observed with this event. The mainshock occurred near local solar midnight, a time when tidal stresses maximize and may have been promoted by those stresses. The last earthquake in the Fox Islands within about 200 km of this epicenter with M>=5.6 occurred on January 22, 2022, an aftershock of an M 6.8 on January 11, 2022. An event of slightly smaller size (M 5.5) occurred a year ago on November 21, 2022.  At the time this summary noted in this regard:

 

 

"The last earthquake in the Fox Islands within about 200 km of today's epicenter was an M 6.6 and 6.8 on January 11, 2022. At the time this summary noted in this regard:

 

 

"Strong earthquakes of M 6.8 and M 6.4 shook the region of the Fox Islands, Aleutians, Alaska today. NEIC reported the M 6.8 was felt with intensity VI in Nikolski; IV in Dutch Harbor, Unalaska, False Pass and II-III in Akutan, Atka, Cold Bay, and Adak,  Alaska. The M 6.4 aftershock was reported with intensity IV in Nikolski, Alaska and III in Unalaska. An aftershock of M 5.8 was also reported felt with intensity IV in Nikolski and Dutch Harbor, Alaska. The last earthquake within about 250 km of this epicenter in the Fox Islands with M>=6.8 was an M 6.9 on July 27, 2015 about 150 km west of today's epicenter." (January 11-12, 2022; November 21, 2022, November 28, 2023)

 

Forecast 161969 had expected this event was likely within about 50 km around April 3, 2024. These events are at the sixth node (60 degrees) from the M 7.5 in Taiwan of April 2, 2024 and may have been promoted by energy from that source. Other events at this distance from Taiwan today occurred as an M 4.2 in eastern Iran.

 

O: 04APR2024 19:59:06  53.4N  167.3W ML=3.4  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

O:  4APR2024 19:57:02  53.5N  167.4W MB=4.4  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  3APR2024 161969    53.7N  167.0W 3.5-5.1 AAAAA  Fox Islands, Aleutians     

 

 

Two series of moderate earthquake occurred today in the region of the central and mid-Atlantic Ridge today. These are at different epicenters (but close to) the series of events in the region in late March at the antipode of Tropical Cyclone Megan as discussed in this summary on March 29, 2024:

 

 

"A series of moderate earthquakes occurred today near local solar noon today in the Northern Mid-Atlantic Ridge and included events of M 4.7, 4.9, 5.0 and 5.2. This is about 300 km south of the recent earthquakes in the area as reported in the previous issue of this summary:

 

"The remarkable series of moderate earthquakes at antipodal locations to Tropical Storms Megan and Neville in the Indian Ocean continued today. These occurred with an M 3.9 in the Gulf of Mexico and an M 4.6 in the northern Mid-Atlantic.

 

The stronger of these was the M 4.8 in the Northern Mid-Atlantic Ocean. This  event is slightly south of the M 5.5 on March 25, 2024. At the time this summary noted in this regard:

 

"The strongest earthquake in the world today was an M 5.5 in the northern mid-Atlantic Ridge area. It was not reported felt in this remote area. The last earthquake of M>=5.5 within about 200 km of this epicenter in the North Atlantic Ridge occurred as an M 6.0 on September 18, 2015 and prior to that an M 6.0 on September 5, 2013. A smaller M 4.6 hit the area to the south of this yesterday. This summary speculated it may have been triggered by antipodal focusing of energy associated with the landfall of Tropical Cyclone Megan as follows:

 

 

"An earthquake of M 4.6 occurred today in the Northern Mid-Atlantic. It was not felt in this remote epicentral area. It was likely promoted by antipodal energy from Tropical storm Megan which passed over the antipode to this epicenter three days ago and was expected in this summary at the time as:

 

"TC Megan (19P) continued today in the area North of Australia with winds up to 80 kts.  This system is expected to track to the southwest over the next week and to make landfall today. It could help promote enhanced seismicity the area of New Guinea and northern Australia during this period. It is currently nearly antipodal to the northern mid-Atlantic at 16N 43W where some promoted antipodal seismicity may occur in the next several days." (March 20, 2024)

 

Today's event in the northern Mid-Atlantic Ridge area is the largest reported within about 250 km of this epicenter since an M 4.7 on July 23, 2023 and an M 5.0 on September 27, 2022." (March 25, 2024)

 

The M 4.8 today is about 150 km south of the M 5.5 on March 25 and is the strongest within about 150 km of today's epicenter since an M  5.2 on August 17m 2020. Further seismicity in this area of the Atlantic antipodal to the past of

TC Megan is considered likely in the next several days." (March 29, 2024)

 

TC Megan passed directly over the antipode of today's epicenters on March 17 as noted in this summary at the time:

 

"A tropical cyclone may be forming north of western Australia. This system is currently located at 13S 136E south of Papua New Guinea ..." (March 17, 2024)

 

Readers should note that the epicenter cited in mid-March for TC Megan (see above) at 13S 136E is antipodal to 13N 44W, the epicenter of the strong activity in the Northern Mid-Atlantic today. It is likely that antipodal focusing from TC Megan helped promoted the volcanism associated with today's events in the North Atlantic." (March 29, 2024)

 

A new series today occurred in the Central Mid-Atlantic and included events of M 5.2, 5.1, .... This activity is the strongest within about 150 km of these events since an M 5.3 on February 15, 2023 and an M 5.8 on September 17, 2020. This epicenter is near the antipode of an M 6.9 in Papua New Guinea of March 23, 2024 and may have been promoted focused energy at the antipode of that event.  

 

Forecast 161785 had expected today's events were likely within about 100 km around April 4, 2024. These earthquakes are at 143 degrees from the M 7.5 in

Taiwan of April 2, 2024 and were likely promoted by energy from that source. They are also at this distance from recent earthquakes in southern Vanuatu of M 6.7 on March 27, 2024 and from the Mariana Islands M 6.9 of April 5, 2024 and at 104 degrees from the Xinjiang quake of January 22, 2024 and near the antipode of the M 6.9 in New Guinea and may have been promoted by energy from those sources.

 

O: 04APR2024 23:37:31   8.0N   38.2W Mw=5.2  EMSC   CENTRAL MID-ATLANTIC RIDGE

O: 04APR2024 23:46:41   8.0N   38.1W mb=5.1  EMSC   CENTRAL MID-ATLANTIC RIDGE

O: 04APR2024 23:16:57   8.1N   38.2W mb=5.0  EMSC   CENTRAL MID-ATLANTIC RIDGE

O: 04APR2024 23:18:25   8.1N   38.2W mb=5.0  EMSC   CENTRAL MID-ATLANTIC RIDGE

O:  4APR2024 23:43:55   7.9N   38.1W MB=5.0  EMSC   CENTRAL MID-ATLANTIC RIDGE   

P:  4APR2024 161785     8.0N   37.0W 4.0-5.7 AAAAA  Central Mid-Atlantic Ridg  

 

The M 4.9 and 5.0 in the Northern Mid-Atlantic had been anticipated in  forecast 161832 to occur within about 25 km around April 4, 2024.

 

O: 05APR2024 01:44:15  14.9N   45.0W mb=4.9  EMSC   NORTHERN MID-ATLANTIC RIDGE

O:  5APR2024 02:30:04  14.9N   45.0W MB=5.0  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P:  4APR2024 161832    15.0N   45.0W 4.0-5.6 AAAAA  Mid-Atlantic Ridge         

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 05APR2024 02:10:35  23.9N  121.6E ML=4.2  EMSC   TAIWAN

O: 04APR2024 18:35:01  24.1N  121.7E Mw=4.9  EMSC   TAIWAN

O: 05APR2024 04:50:50  24.1N  121.7E Mw=5.1  EMSC   TAIWAN

O: 05APR2024 05:02:46  24.1N  121.7E ML=4.1  EMSC   TAIWAN

O: 04APR2024 14:30:08  24.2N  121.7E ML=5.1  EMSC   TAIWAN

O: 04APR2024 17:24:50  24.2N  121.8E Mw=4.4  EMSC   TAIWAN

O: 04APR2024 18:42:36  24.2N  121.9E mb=4.5  EMSC   TAIWAN

O: 04APR2024 19:48:08  24.2N  121.8E ML=4.3  EMSC   TAIWAN

O: 04APR2024 20:28:44  24.2N  121.8E ML=4.4  EMSC   TAIWAN

O: 05APR2024 04:36:42  24.2N  121.8E ML=4.0  EMSC   TAIWAN

O: 05APR2024 04:40:52  24.2N  121.8E mb=4.6  EMSC   TAIWAN

O: 04APR2024 14:53:35  24.3N  121.8E ML=4.2  EMSC   TAIWAN

O: 04APR2024 17:22:41  24.3N  121.7E ML=4.1  EMSC   TAIWAN

O: 04APR2024 21:10:08  24.3N  121.7E ML=4.1  EMSC   TAIWAN

O: 05APR2024 01:17:49  24.3N  121.8E ML=4.1  EMSC   TAIWAN

O:  5APR2024 06:12:47  23.8N  121.6E MW=4.7  EMSC   TAIWAN                       

P:  4APR2024 161857    24.0N  121.0E 4.0-6.4 AAAAA  Taiwan                     

P:  6APR2024 161856    23.0N  121.0E 4.0-5.5 AAAAA  Taiwan                     

 

Most of these aftershocks in Taiwan today were felt with moderate intensity

in the areas of Hualien, Yilan and Nantou and surrounding counties in Taiwan.

Details are available on the CWB on-line website.

 

htts://www.cwa.gov.tw/V8/E/E/index.html

 

NEIC reported aftershocks of M 4.9 ... in Taiwan was felt with intensity up to III in the area(s) of  aftershocks in Hualien, Yilan Nantou and other counties, Taiwan.

 

O:  4APR2024 16:04:33  33.2N   76.8E MW=5.2  EMSC   KASHMIR-INDIA BORDER REGION  

P:  3APR2024 161890    34.0N   74.0E 3.8-5.2 AABAA  Pakistan                   

 

EMSC reported this earthquake of M 5.2 in Kashmir, India was felt with intensity up to III in the area(s) of  Kashmir, India in Padshai, Sopore, Khawaja Bagh, Ludhiana, Mohali, Kupwara, Derabassi, Gokalpuri and in Pakistan.

NEIC reported this earthquake of M 5.2 in India was felt with intensity up to V in the area(s) of  India in Padam.

 

O:  5APR2024 05:05:38  28.0N   54.3E MB=4.2  EMSC   SOUTHERN IRAN                

P: 28MAR2024 161593    28.0N   56.0E 3.5-5.1 CABAA  So. Iran/Persian Gulf      

 

 

INDONESIA AND PHILIPPINES

 

O:  4APR2024 18:29:27   1.5N  126.4E MB=4.7  EMSC   MOLUCCA SEA                  

O: 05APR2024 02:13:41   2.3N  126.9E ML=4.4  EMSC   MOLUCCA SEA

P:  6APR2024 161791     1.0N  124.0E 4.0-5.5 AACAA  Mindanao, Philippines      

 

O:  4APR2024 22:07:34   4.2S  135.0E ML=4.1  EMSC   NEAR S COAST OF PAPUA, INDONES

P: 30MAR2024 161551     5.0S  134.0E 4.0-5.4 BAAAA  West Irian, PNG            

 

O:  4APR2024 07:21:38   4.7S  154.4E MB=4.5  EMSC   BOUGAINVILLE REGION, P.N.G.  

P:  6APR2024 161804     4.0S  152.0E 4.0-5.5 AACAA  New Britain                

 

O:  4APR2024 10:51:47   5.4S  112.4E ML=4.1  EMSC   JAVA SEA                     

P:  4APR2024 161810     6.0S  112.0E 4.0-5.6 AAAAA  So. of Bali                

 

O:  4APR2024 08:44:09   8.9S  124.2E ML=4.1  EMSC   KEPULAUAN ALOR, INDONESIA    

P:  2APR2024 161801     9.0S  124.0E 4.0-5.7 AAAAA  Flores Island area         

 

O:  4APR2024 19:29:07  21.1N  145.7E MB=4.9  EMSC   MARIANA ISLANDS REGION       

P:  4APR2024 161858    21.0N  146.0E 4.0-5.6 AAAAA  Volcano Islands            

 

PHIVOLCS reported an earthquake of M 4.5 in Mindanao, Philippines was felt with intensity up to II in the area(s) of  Mindanao, Philippines in Jose Abad Santos, Davao Occidental.

 

 

CENTRAL AND SOUTH AMERICA

 

O:  4APR2024 07:38:05  12.9N   88.8W MW=5.1  EMSC   OFFSHORE EL SALVADOR         

P:  5APR2024 161833    13.0N   87.0W 3.5-5.3 AABAA  Nicaragua                  

P:  8APR2024 161834    14.0N   88.0W 3.5-5.5 BAAAA  Nicaragua                  

 

NEIC reported this earthquake of M 5.1 in El Salvador was felt with intensity up to III in the area(s) of  El Salvador in Puerto El Triunfo.

EMSC reported moderate shaking in El Salvador at Soyapango, Nueva San Salvador.

 

O:  4APR2024 11:55:42  15.6N   96.4W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

O:  4APR2024 17:59:21  16.5N   94.8W ML=4.1  EMSC   OAXACA, MEXICO               

P:  3APR2024 161837    16.0N   96.0W 3.5-5.1 AAAAA  Oaxaca, Mexico             

 

O:  4APR2024 15:38:26  16.8N   99.7W ML=4.0  EMSC   GUERRERO, MEXICO              

P:  6APR2024 161837    17.0N   99.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O:  5APR2024 00:31:18  18.0N   67.0W MD=3.1  EMSC   PUERTO RICO                  

P:  3APR2024 161838    18.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O:  4APR2024 23:49:24  18.5N   93.1W ML=4.0  EMSC   OFFSHORE TABASCO, MEXICO     

P:  3APR2024 161819    18.0N   95.0W 3.5-5.5 AABAA  Chiapas, Mexico            

 

O:  4APR2024 09:37:26  18.6N   74.0W ML=3.5  EMSC   HAITI REGION                 

P:  5APR2024 161843    19.0N   73.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O:  4APR2024 13:45:26  18.9N   68.3W MD=3.5  EMSC   DOMINICAN REPUBLIC REGION    

P:  3APR2024 161838    18.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O:  4APR2024 22:53:59  19.4N  108.2W ML=4.1  EMSC   REVILLA GIGEDO ISLANDS REGION

P:  7APR2024 161845    20.0N  109.0W 3.5-5.2 BAAAA  Gulf of California         

 

O:  5APR2024 00:27:07  19.9N   64.5W MD=3.7  EMSC   NORTH OF THE VIRGIN ISLANDS  

P:  7APR2024 161842    20.0N   64.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

O:  5APR2024 03:31:24  22.6S   68.9W MB=4.2  EMSC   ANTOFAGASTA, CHILE           

P:  5APR2024 162019    24.0S   69.0W 4.0-5.5 ABAAA  Coast No. Chile            

P: 28MAR2024 161751    23.0S   69.0W 4.0-5.6 CAAAA  Coast No. Chile            

 

O:  4APR2024 21:29:07  26.2N   99.8W ML=3.8  EMSC   NUEVO LEON, MEXICO           

P:  5APR2024 161852    28.0N   98.0W 3.0-4.6 ABBAA  Northern Mexico            

 

O: 04APR2024 17:06:27  27.6N  111.9W ML=3.5  EMSC   GULF OF CALIFORNIA

O: 04APR2024 09:26:06  27.7N  112.3W ML=3.1  EMSC   GULF OF CALIFORNIA

O: 04APR2024 09:27:31  27.8N  112.3W ML=3.3  EMSC   GULF OF CALIFORNIA

O: 04APR2024 10:11:37  27.8N  112.2W ML=3.0  EMSC   GULF OF CALIFORNIA

O:  4APR2024 09:57:38  27.6N  112.6W ML=3.0  EMSC   GULF OF CALIFORNIA           

P:  2APR2024 161845    26.0N  111.0W 3.5-5.2 ABBAA  Gulf of California         

 

EMSC reported an earthquake of M 4.0 in Peru was felt with intensity up to III in the area(s) of  Peru in Los Olivos.

 

AFRICA AND EUROPE

 

O:  4APR2024 13:19:56  36.6N    3.0W ML=2.7  EMSC   STRAIT OF GIBRALTAR          

P: 10APR2024 161879    35.0N    3.0W 3.5-4.9 CBAAA  Morocco/Spain              

 

SOUTHWEST PACIFIC

 

O:  4APR2024 11:42:08  16.0S  167.9E MB=4.5  EMSC   VANUATU                      

P:  7APR2024 162017    16.0S  168.0E 4.0-5.4 BAAAA  Vanuatu Islands            

 

O:  4APR2024 12:53:30  20.2S  177.1W MB=4.5  EMSC   FIJI REGION                  

P:  4APR2024 162029    20.0S  178.0W 4.0-5.6 AAAAA  Tonga Islands              

 

OCEAN RIDGES

 

O:  4APR2024 14:20:28  36.2N   34.0W MB=5.0  EMSC   AZORES ISLANDS REGION        

O:  4APR2024 13:47:55  36.4N   33.9W MB=4.5  EMSC   AZORES ISLANDS REGION        

P:  7APR2024 161885    38.0N   32.0W 4.0-5.8 BBBAA  No. Mid-Atlantic Ridge     

 

O: 04APR2024 23:37:31   8.0N   38.2W Mw=5.2  EMSC   CENTRAL MID-ATLANTIC RIDGE

O: 04APR2024 23:46:41   8.0N   38.1W mb=5.1  EMSC   CENTRAL MID-ATLANTIC RIDGE

O: 04APR2024 23:16:57   8.1N   38.2W mb=5.0  EMSC   CENTRAL MID-ATLANTIC RIDGE

O: 04APR2024 23:18:25   8.1N   38.2W mb=5.0  EMSC   CENTRAL MID-ATLANTIC RIDGE

O:  4APR2024 23:43:55   7.9N   38.1W MB=5.0  EMSC   CENTRAL MID-ATLANTIC RIDGE   

P:  4APR2024 161785     8.0N   37.0W 4.0-5.7 AAAAA  Central Mid-Atlantic Ridg   

 

O: 05APR2024 01:44:15  14.9N   45.0W mb=4.9  EMSC   NORTHERN MID-ATLANTIC RIDGE

O:  5APR2024 02:30:04  14.9N   45.0W MB=5.0  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P:  4APR2024 161832    15.0N   45.0W 4.0-5.6 AAAAA  Mid-Atlantic Ridge         

 

ZEALANDIA AND AUSTRALIA REGION

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today.

 

JAPAN AND KURIL ISLANDS

 

O:  4APR2024 20:31:48  42.0N  142.4E MW=5.0  EMSC   HOKKAIDO, JAPAN REGION       

P:  2APR2024 161920    41.0N  141.0E 3.5-5.4 AAAAA  Hokkaido, Japan            

 

NEIC reported this earthquake of M 5.0 in Northern Japan was felt with intensity up to III in the area(s) of  Northern Japan in Urakawa, Japan.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  4APR2024 11:21:56  37.4N  118.6W MD=2.6  EMSC   CENTRAL CALIFORNIA           

P:  3APR2024 161862    37.4N  118.6W 2.5-4.8 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.6 in Mammoth Lakes, California was felt with intensity up to III in the area(s) of  Mammoth Lakes, California in Round Valley.

 

O:  4APR2024 14:53:01  38.8N  122.8W MD=2.3  EMSC   NORTHERN CALIFORNIA          

P:  3APR2024 161867    38.5N  122.7W 2.5-4.7 AAAAA  Central California         

 

O: 05APR2024 01:34:49  40.0N  121.3W mb=4.3  EMSC   NORTHERN CALIFORNIA

O: 05APR2024 01:44:08  40.0N  121.3W MD=2.2  EMSC   NORTHERN CALIFORNIA

O: 05APR2024 02:03:34  40.0N  121.3W MD=2.6  EMSC   NORTHERN CALIFORNIA

O:  5APR2024 01:34:25  40.0N  121.3W MW=4.5  EMSC   NORTHERN CALIFORNIA           

P:  3APR2024 161942    40.2N  121.2W 2.5-4.8 AAAAA  Northern California        

 

O:  4APR2024 12:19:17  40.4N  125.1W MD=2.6  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  3APR2024 161943    40.2N  124.2W 2.5-4.8 AAAAA  Off Coast of No. Calif     

 

ALASKA

 

O: 04APR2024 19:59:06  53.4N  167.3W ML=3.4  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

O:  4APR2024 19:57:02  53.5N  167.4W MB=4.4  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  3APR2024 161969    53.7N  167.0W 3.5-5.1 AAAAA  Fox Islands, Aleutians     

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 04APR2024 08:33:07  65.4N  134.8W MB=3.3  ECAN OF EAGLE (DUBLIN GULCH) MINE, NT

O:  4APR2024 08:33:07  65.4N  134.8W ML=3.3  EMSC   NORTHERN YUKON TERRITORY, CANA

P:  3APR2024 161992    66.9N  135.8W 3.0-4.6 ABAAA  Northern Alaska            

 

O:  4APR2024 20:38:38  48.6N  129.0W MB=3.0  ECAN OF HOUPSITAS, BC               

P:  2APR2024 161956    49.9N  130.2W 2.8-5.0 ABAAA  Vancouver Island area      

P:  6APR2024 161956    49.5N  127.2W 2.8-5.4 AABAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 04APR2024 15:05:29  32.0N  104.0W ML=2.3  EMSC   WESTERN TEXAS

O:  4APR2024 14:24:26  32.0N  104.0W ML=2.5  EMSC   WESTERN TEXAS                

P:  4APR2024 161891    32.5N  104.6W 2.0-4.4 AAAAA  SW U.S.A                   

 

O:  4APR2024 13:16:11  44.4N  116.1W ML=2.1  EMSC   SOUTHERN IDAHO               

P:  6APR2024 161929    44.4N  116.1W 2.0-4.0 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O:  4APR2024 07:01:15  35.5N   83.6W MD=2.1  EMSC   NORTH CAROLINA               

P:  4APR2024 161876    35.9N   82.8W 2.0-4.4 AAAAA  Kentucky/Tennessee/NC      

 

O: 05APR2024 06:30:13  36.5N   89.6W MD=2.4  EMSC   SOUTHEASTERN MISSOURI

O:  5APR2024 06:17:14  36.2N   89.6W MD=2.1  EMSC   TENNESSEE                     

P:  5APR2024 161880    36.3N   89.5W 2.0-4.0 AAAAA  New Madrid area            

 

O: 05APR2024 21:59:13  40.7N   74.7W mb=4.0  ANSS   Gladstone New Jersey

O: 05APR2024 18:40:20  40.7N   74.8W ml=1.8  ANSS   Califon New Jersey

O: 05APR2024 17:32:13  40.6N   74.7W ml=2.2  ANSS   Whitehouse Station New Jersey

O: 05APR2024 17:21:55  40.7N   74.8W ml=1.9  ANSS   Califon New Jersey

O: 05APR2024 17:18:48  40.7N   74.7W ml=2.0  ANSS   Chester New Jersey

O: 05APR2024 17:14:13  40.7N   74.7W ml=2.0  ANSS   Chester New Jersey

O: 05APR2024 16:49:49  40.7N   74.7W ml=1.8  ANSS   Whitehouse Station New Jersey

O: 05APR2024 16:31:50  40.7N   74.7W ml=1.8  ANSS   Bedminster New Jersey

O: 05APR2024 15:49:36  40.7N   74.8W ml=2.0  ANSS   Long Valley New Jersey

O: 05APR2024 15:37:10  40.7N   74.8W ml=1.8  ANSS   Califon New Jersey

O: 05APR2024 15:33:14  40.7N   74.8W ml=1.9  ANSS   Califon New Jersey

O: 05APR2024 15:20:20  40.7N   74.7W ml=2.0  ANSS   Whitehouse Station New Jersey

O: 05APR2024 14:23:20  40.7N   74.8W mw=4.8  ANSS   Whitehouse Station New Jersey

O:  5APR2024 14:23:21  40.7N   74.8W MB=4.7  ECAN OF NEWARK, NJ                  

P:  8APR2024 161936    40.0N   74.0W 2.0-4.1 BAAAA  New York State             

P:  8APR2024 161936    40.0N   76.0W 2.0-3.9 BAAAA  New York State             

 

O: 04APR2024 07:26:10  47.6N   70.4W MB=1.8  ECAN OF SAINT-URBAIN, QC   

O: 03APR2024 18:10:34  47.8N   69.9W MB=1.6  ECAN OF SAINT-SIM├⌐ON, QC   

O:  4APR2024 22:42:56  47.6N   70.2W MB=1.2  ECAN OF LA MALBAIE, QC              

P:  3APR2024 161927    47.0N   70.0W 2.0-4.2 AAAAA  Maine                      

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

STRONG EARTHQUAKE IN HONSHU, JAPAN

 

EARTHQUAKE SUMMARY FOR APRIL 3, 2024

 

 

The strongest earthquake in the world today was an M 6.1 in the region of eastern Honshu, Japan. NEIC reported it was felt with maximum intensity IV in Minami-Soma, Honshu, Japan. EMSC reported moderate to strong shaking in Japan at Minuma, Nakahara, Tokyo. No major damage was reported with this earthquake. The last earthquake of M>=6.1 off the east coast of Honshu, Japan within about 150 km of this epicenter occurred on March 16, 2022 with M 7.3. Today's event caused some concern of a repeat of the March 11, 2011 earthquake and tsunami of M>9. That event however was probably triggered by several strong X-class flares and the current solar conditions are quiet, so a repeat appears unlikely at this time. At the time of March 16, 2022 event this summary noted:

 

"A major earthquake of M 7.3 off the east coast of Honshu, Japan followed an M 6.4 minutes earlier. Today's mainshock killed four in Fukushima, Japan and did minor damage throughout the area. More than 97 were injured in this earthquake but millions lost power. Some trains came off their tracks but no injuries were reported with these incidents. High Speed trains were temporarily shut down. A tsunami warning was issued and waves of up to 20 cm were reported. No damage was reported at nuclear facilities with these earthquakes. Some residents of Fukushima were evacuated for fear of tsunamis. This is the strongest earthquake in this area since a similar M 7.3 on February 13, 2021. An M 9.3+ earthquake shook this area and triggered a major Pacific-wide tsunami NEIC reported maximum intensity IX with the M 7.3 with damage was felt in Namie, Fukushima with VIII in Haramachi, Soma, Watan, Natori, Shiogama, Miyagi and lesser shaking throughout most of eastern Honshu, Japan. The M 6.5 foreshock was reported with maximum intensity VII in Miyagi and V in Fukushima with lesser shaking in Chiba, Saitama, and Tokyo Prefectures, Japan.  These earthquakes occurred within a couple of minutes of local solar midnight and were probably promoted by strong tidal and geomagnetic stresses which maximize near this hour. Today's earthquake followed a major geomagnetic storm of the past three days. A series of M-class solar flares have been occurring over the past day and a moderate geomagnetic sudden commencement storm began about  14:00 UT today, coincident with the earthquakes in Japan and may have helped trigger this activity." (March 16, 2022)

 

Forecast 161889 had expected today's event was likely within about 50 km  of this epicenter around April 4, 2024.

 

O:  4APR2024 03:16:31  37.7N  141.8E MW=6.1  EMSC   NEAR EAST COAST OF HONSHU,   

P:  4APR2024 161889    38.0N  141.0E 4.0-5.6 AAAAA  Off East Coast Honshu      

 

Moderate aftershocks of the M 7.5 in Taiwan of April 2-3, 2024 continued today.

Many of these were felt with light to moderated intensity up to IV in the region of Hualien, Taiwan. The latest of these was an M 4.8 felt with intensity IV in  Hualien with lighter intensity throughout much of Taiwan.

 

Forecast 161857 had expected continuing moderate to strong aftershocks in Taiwan at this time.

 

 

O: 03APR2024 09:08:18  23.8N  121.5E ML=4.1  EMSC   TAIWAN

O: 03APR2024 09:22:39  23.8N  121.5E ML=4.1  EMSC   TAIWAN

O: 03APR2024 18:29:48  23.8N  121.8E Mw=4.9  EMSC   TAIWAN

O: 03APR2024 19:46:52  23.8N  121.8E Mw=4.5  EMSC   TAIWAN

O: 04APR2024 01:29:07  23.8N  121.6E mb=4.6  EMSC   TAIWAN

O: 03APR2024 17:39:11  23.9N  121.7E Mw=4.2  EMSC   TAIWAN

O: 03APR2024 19:07:24  23.9N  121.8E mb=4.3  EMSC   TAIWAN

O: 03APR2024 22:46:34  23.9N  121.8E mb=4.3  EMSC   TAIWAN

O: 03APR2024 08:17:12  24.0N  121.7E mb=4.6  EMSC   TAIWAN

O: 03APR2024 08:56:29  24.0N  121.7E mb=4.7  EMSC   TAIWAN

O: 03APR2024 09:15:02  24.0N  121.6E ML=4.4  EMSC   TAIWAN

O: 03APR2024 09:20:09  24.0N  121.7E ML=4.4  EMSC   TAIWAN

O: 03APR2024 10:56:36  24.0N  121.8E Mw=4.1  EMSC   TAIWAN

O: 03APR2024 11:51:36  24.0N  121.6E ML=4.3  EMSC   TAIWAN

O: 03APR2024 12:02:07  24.0N  121.6E ML=4.3  EMSC   TAIWAN

O: 04APR2024 03:14:29  24.0N  121.7E mb=4.5  EMSC   TAIWAN

O: 03APR2024 09:40:38  24.1N  121.6E ML=4.2  EMSC   TAIWAN

O: 03APR2024 09:53:42  24.1N  121.7E ML=4.3  EMSC   TAIWAN

O: 03APR2024 14:49:14  24.1N  121.9E mb=4.8  EMSC   TAIWAN

O: 03APR2024 15:55:12  24.1N  121.7E mb=4.8  EMSC   TAIWAN

O: 03APR2024 17:18:59  24.1N  121.8E Mw=4.1  EMSC   TAIWAN

O: 03APR2024 21:56:11  24.1N  121.8E mb=4.8  EMSC   TAIWAN

O: 03APR2024 07:05:19  24.2N  121.7E ML=4.4  EMSC   TAIWAN

O: 03APR2024 09:28:51  24.2N  121.8E ML=4.1  EMSC   TAIWAN

O: 03APR2024 10:38:55  24.2N  121.7E ML=4.6  EMSC   TAIWAN

O: 03APR2024 11:22:30  24.2N  121.7E ML=4.0  EMSC   TAIWAN

O: 03APR2024 13:24:30  24.2N  121.8E ML=4.4  EMSC   TAIWAN

O: 03APR2024 13:52:04  24.2N  121.8E ML=4.1  EMSC   TAIWAN

O: 03APR2024 14:29:09  24.2N  121.7E ML=4.3  EMSC   TAIWAN

O: 03APR2024 15:20:04  24.2N  121.7E ML=4.1  EMSC   TAIWAN

O: 03APR2024 15:39:10  24.2N  121.7E Mw=4.5  EMSC   TAIWAN

O: 03APR2024 15:42:36  24.2N  121.7E Mw=4.5  EMSC   TAIWAN

O: 03APR2024 18:30:45  24.2N  121.7E ML=4.3  EMSC   TAIWAN

O: 03APR2024 18:55:58  24.2N  121.7E ML=4.1  EMSC   TAIWAN

O: 03APR2024 21:19:16  24.2N  121.8E ML=4.0  EMSC   TAIWAN

O: 04APR2024 00:18:09  24.2N  121.7E ML=4.3  EMSC   TAIWAN

O: 04APR2024 00:32:40  24.2N  121.7E ML=4.2  EMSC   TAIWAN

O: 04APR2024 02:04:21  24.2N  121.7E ML=4.0  EMSC   TAIWAN

O: 04APR2024 03:10:11  24.2N  121.7E ML=4.0  EMSC   TAIWAN

O: 04APR2024 03:31:23  24.2N  121.7E ML=4.0  EMSC   TAIWAN

O: 04APR2024 04:11:47  24.2N  121.7E ML=4.1  EMSC   TAIWAN

O: 04APR2024 05:00:29  24.2N  121.8E Mw=4.5  EMSC   TAIWAN

O: 04APR2024 05:16:56  24.2N  121.8E mb=4.4  EMSC   TAIWAN

O: 03APR2024 14:17:03  24.3N  121.8E ML=4.0  EMSC   TAIWAN

O: 03APR2024 20:26:57  24.3N  121.7E ML=4.3  EMSC   TAIWAN

O: 03APR2024 20:29:18  24.3N  121.8E mb=4.5  EMSC   TAIWAN

O: 04APR2024 02:02:55  24.3N  121.8E mb=4.6  EMSC   TAIWAN

O:  3APR2024 08:38:01  23.7N  121.6E MB=4.9  EMSC   TAIWAN                       

P:  4APR2024 161857    24.0N  121.0E 4.0-6.4 AAAAA  Taiwan                     

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 03APR2024 09:08:18  23.8N  121.5E ML=4.1  EMSC   TAIWAN

O: 03APR2024 09:22:39  23.8N  121.5E ML=4.1  EMSC   TAIWAN

O: 03APR2024 18:29:48  23.8N  121.8E Mw=4.9  EMSC   TAIWAN

O: 03APR2024 19:46:52  23.8N  121.8E Mw=4.5  EMSC   TAIWAN

O: 04APR2024 01:29:07  23.8N  121.6E mb=4.6  EMSC   TAIWAN

O: 03APR2024 17:39:11  23.9N  121.7E Mw=4.2  EMSC   TAIWAN

O: 03APR2024 19:07:24  23.9N  121.8E mb=4.3  EMSC   TAIWAN

O: 03APR2024 22:46:34  23.9N  121.8E mb=4.3  EMSC   TAIWAN

O: 03APR2024 08:17:12  24.0N  121.7E mb=4.6  EMSC   TAIWAN

O: 03APR2024 08:56:29  24.0N  121.7E mb=4.7  EMSC   TAIWAN

O: 03APR2024 09:15:02  24.0N  121.6E ML=4.4  EMSC   TAIWAN

O: 03APR2024 09:20:09  24.0N  121.7E ML=4.4  EMSC   TAIWAN

O: 03APR2024 10:56:36  24.0N  121.8E Mw=4.1  EMSC   TAIWAN

O: 03APR2024 11:51:36  24.0N  121.6E ML=4.3  EMSC   TAIWAN

O: 03APR2024 12:02:07  24.0N  121.6E ML=4.3  EMSC   TAIWAN

O: 04APR2024 03:14:29  24.0N  121.7E mb=4.5  EMSC   TAIWAN

O: 03APR2024 09:40:38  24.1N  121.6E ML=4.2  EMSC   TAIWAN

O: 03APR2024 09:53:42  24.1N  121.7E ML=4.3  EMSC   TAIWAN

O: 03APR2024 14:49:14  24.1N  121.9E mb=4.8  EMSC   TAIWAN

O: 03APR2024 15:55:12  24.1N  121.7E mb=4.8  EMSC   TAIWAN

O: 03APR2024 17:18:59  24.1N  121.8E Mw=4.1  EMSC   TAIWAN

O: 03APR2024 21:56:11  24.1N  121.8E mb=4.8  EMSC   TAIWAN

O: 03APR2024 07:05:19  24.2N  121.7E ML=4.4  EMSC   TAIWAN

O: 03APR2024 09:28:51  24.2N  121.8E ML=4.1  EMSC   TAIWAN

O: 03APR2024 10:38:55  24.2N  121.7E ML=4.6  EMSC   TAIWAN

O: 03APR2024 11:22:30  24.2N  121.7E ML=4.0  EMSC   TAIWAN

O: 03APR2024 13:24:30  24.2N  121.8E ML=4.4  EMSC   TAIWAN

O: 03APR2024 13:52:04  24.2N  121.8E ML=4.1  EMSC   TAIWAN

O: 03APR2024 14:29:09  24.2N  121.7E ML=4.3  EMSC   TAIWAN

O: 03APR2024 15:20:04  24.2N  121.7E ML=4.1  EMSC   TAIWAN

O: 03APR2024 15:39:10  24.2N  121.7E Mw=4.5  EMSC   TAIWAN

O: 03APR2024 15:42:36  24.2N  121.7E Mw=4.5  EMSC   TAIWAN

O: 03APR2024 18:30:45  24.2N  121.7E ML=4.3  EMSC   TAIWAN

O: 03APR2024 18:55:58  24.2N  121.7E ML=4.1  EMSC   TAIWAN

O: 03APR2024 21:19:16  24.2N  121.8E ML=4.0  EMSC   TAIWAN

O: 04APR2024 00:18:09  24.2N  121.7E ML=4.3  EMSC   TAIWAN

O: 04APR2024 00:32:40  24.2N  121.7E ML=4.2  EMSC   TAIWAN

O: 04APR2024 02:04:21  24.2N  121.7E ML=4.0  EMSC   TAIWAN

O: 04APR2024 03:10:11  24.2N  121.7E ML=4.0  EMSC   TAIWAN

O: 04APR2024 03:31:23  24.2N  121.7E ML=4.0  EMSC   TAIWAN

O: 04APR2024 04:11:47  24.2N  121.7E ML=4.1  EMSC   TAIWAN

O: 04APR2024 05:00:29  24.2N  121.8E Mw=4.5  EMSC   TAIWAN

O: 04APR2024 05:16:56  24.2N  121.8E mb=4.4  EMSC   TAIWAN

O: 03APR2024 14:17:03  24.3N  121.8E ML=4.0  EMSC   TAIWAN

O: 03APR2024 20:26:57  24.3N  121.7E ML=4.3  EMSC   TAIWAN

O: 03APR2024 20:29:18  24.3N  121.8E mb=4.5  EMSC   TAIWAN

O: 04APR2024 02:02:55  24.3N  121.8E mb=4.6  EMSC   TAIWAN

O:  3APR2024 08:38:01  23.7N  121.6E MB=4.9  EMSC   TAIWAN                        

P:  4APR2024 161857    24.0N  121.0E 4.0-6.4 AAAAA  Taiwan                     

 

O:  3APR2024 22:43:15  41.8N   72.2E MB=4.3  EMSC   KYRGYZSTAN                   

P:  3APR2024 161925    42.0N   79.0E 4.0-5.5 AAAAA  Kirgizstan/Xinjiang         

 

EMSC reported this earthquake of M 4.3 in Kyrgyzstan was felt with intensity up to III in the area(s) of  Kyrgyzstan at Bishkek.

 

O:  4APR2024 00:39:38  38.5N   90.9E MB=5.3  EMSC   XINJIANG-QINGHAI BDR REG, CHIN

P: 26MAR2024 161658    35.0N   90.0E 3.8-5.2 CCAAA  Xizang                     

 

O:  4APR2024 06:03:41  53.1N   99.0E MB=3.7  EMSC   IRKUTSKAYA OBLAST', RUSSIA   

P:  7APR2024 161980    51.0N   98.0E 3.0-4.6 BBAAA  So. Siberia                

 

INDONESIA AND PHILIPPINES

 

O:  4APR2024 06:39:52   0.1N  123.4E MB=4.9  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  1APR2024 161813     1.0S  123.0E 4.0-5.4 BBAAA  Sulawesi area              

 

O:  3APR2024 19:39:51   3.3S  123.5E ML=4.1  EMSC   SULAWESI, INDONESIA          

P:  1APR2024 161813     1.0S  123.0E 4.0-5.4 ACAAA  Sulawesi area              

 

O:  3APR2024 09:02:17   5.9S  112.3E MB=4.9  EMSC   JAVA SEA                     

P:  4APR2024 161810     6.0S  112.0E 4.0-5.6 AAAAA  So. of Bali                

 

NEIC reported this earthquake of M 4.9 north of Java, Indonesia  was felt with intensity up to III in the area(s) of  Java, Indonesia in Paciran.

EMSC reported moderate shaking in Java at Kamal, Bojonegoro, Bubutan, Manquharjo.

 

O:  3APR2024 15:45:12   7.2S  129.6E ML=4.4  EMSC   KEPULAUAN BABAR, INDONESIA   

P:  4APR2024 161795     6.0S  128.0E 4.0-5.4 ABBAA  Banda Sea                  

 

 

CENTRAL AND SOUTH AMERICA

 

O:  3APR2024 23:06:55  14.0N   90.2W MB=4.5  EMSC   GUATEMALA                    

P:  4APR2024 161822    13.0N   90.0W 3.5-5.6 AAAAA  Guatemala                  

 

O: 03APR2024 08:47:29  14.2N   92.7W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O:  3APR2024 08:19:01  14.0N   92.7W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  2APR2024 161823    14.0N   92.0W 3.5-5.4 AAAAA  Guatemala                  

 

O: 03APR2024 20:13:14  15.2N   94.6W ML=4.0  EMSC   OFF COAST OF OAXACA, MEXICO

O:  3APR2024 08:34:37  14.9N   94.1W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P:  4APR2024 161819    14.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O:  4APR2024 00:29:18  17.5N   94.3W ML=4.0  EMSC   VERACRUZ, MEXICO             

P:  3APR2024 161819    18.0N   95.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

P: 28MAR2024 161557    17.0N   94.0W 3.5-5.5 CAAAA  Chiapas, Mexico             

 

O:  4APR2024 06:03:04  19.3N   67.7W MD=3.2  EMSC   PUERTO RICO REGION           

P:  2APR2024 161842    20.0N   67.0W 3.0-4.8 AAAAA  Bahamas/No. Caribbean      

 

O:  4APR2024 00:28:15  24.5S   69.4W MB=5.1  EMSC   ANTOFAGASTA, CHILE           

P:  5APR2024 162019    24.0S   69.0W 4.0-5.5 AAAAA  Coast No. Chile            

P: 28MAR2024 161751    23.0S   69.0W 4.0-5.6 CBAAA  Coast No. Chile            

 

NEIC reported this earthquake of M 5.1 in Northern Chile was felt with intensity up to III in the area(s) of  Northern Chile in Antofagasta.

EMSC reported it was felt with moderate intensity in Mina La Escondida.

 

O:  3APR2024 13:51:57  36.9S   72.8W MW=5.2  EMSC   BIO-BIO, CHILE               

P:  3APR2024 162035    36.0S   71.0W 4.0-5.6 AABAA  Central Chile              

P: 30MAR2024 161765    37.0S   74.0W 4.0-5.7 BAAAA  Central Chile              

 

NEIC reported this earthquake of M 5.2 in Bio-Bio, Chile was felt with intensity up to V in the area(s) of  Bio-Bio, Chile in Chiguayante.

EMSC reported it was felt with moderate intensity in Chile at Chiguayante, Concepcion, Talcahuano, San Pedro de la Paz, Lota, Los Angeles, San Ignacio, Chillan, San Carlos, Lebu, Lautaro, Villarrica, Macul, Providencia, Las Condes.

 

AFRICA AND EUROPE

 

O:  3APR2024 07:48:13  38.0N   37.7E ML=4.6  EMSC   CENTRAL TURKEY               

P:  3APR2024 161905    37.0N   38.0E 3.5-4.9 AAAAA  Turkey                     

 

EMSC reported this earthquake of M 4.6 in Turkey was felt with intensity up to III in the area(s) of  Turkey in Ciglik, Yeni, Cicek, Pinarbasi, Altinsehir, Tecde, Ozalper, Malatya, Inonu, Cukcrdere, Cosnuk, Kahramanmaraas, Suleymansah, Siyahgul, among others.

 

EMSC reported an earthquake of M 4.0 in Crete, Greece was felt with intensity up to III in the area(s) of  Crete, Greece in Agios Nikolaos, Crete, Heraklion, Nea Alikarnassos, Gazi, Ierapetra, Magnesia, Nea Makri.  

 

 

O:  2APR2024 19:07:42  43.0N   18.6E MW=4.0  EMSC   MONTENEGRO                   

P:  4APR2024 161913    44.0N   18.0E 3.0-4.9 AAAAA  Adriatic Sea               

P: 25MAR2024 161659    43.0N   18.0E 3.0-4.9 CAAAA  Adriatic Sea               

 

EMSC reported an earthquake of M 4.7 in Montenegro was felt with intensity up to III in the area(s) of  Montenegro in iBosnia and Herzegovina at Gacko, Bileca, Niksic, Trebinje among others.

NEIC reported this earthquake of M 4.4 in Montenegro was felt with intensity up to III in the area(s) of  Montenegro in Pluzine.

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

O:  3APR2024 22:57:52  11.6S  166.4E MB=4.5  EMSC   SANTA CRUZ ISLANDS           

P:  4APR2024 162016    11.0S  166.0E 4.0-5.6 AAAAA  Vanuatu Islands            

 

O: 03APR2024 11:25:31  14.4S  167.7E mb=4.5  EMSC   VANUATU

O:  3APR2024 07:52:39  14.3S  167.3E MB=5.1  EMSC   VANUATU                      

P:  4APR2024 162016    14.0S  168.0E 4.0-5.4 AAAAA  Vanuatu Islands            

 

OCEAN RIDGES

 

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  4APR2024 01:02:46  39.5S  174.8E ML=3.9  EMSC   NORTH ISLAND OF NEW ZEALAND  

P:  5APR2024 162037    39.0S  174.0E 3.0-4.7 AAAAA  North Island, N.Z.         

 

O:  4APR2024 00:19:51  33.0S  178.3W MB=5.1  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  3APR2024 162039    32.0S  180.0W 4.0-5.6 AABAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O:  4APR2024 02:15:51  35.6N  139.7E MB=4.4  EMSC   NEAR S. COAST OF HONSHU,     

P:  6APR2024 161882    35.0N  139.0E 3.5-4.9 AAAAA  No. Honshu, Japan          

 

NEIC reported this earthquake of M 4.4 in Eastern Honshu, Japan was felt with intensity up to III in the area(s) of  Eastern Honshu, Japan in Motoyoyogicho.

 

O:  4APR2024 03:16:31  37.7N  141.8E MW=6.1  EMSC   NEAR EAST COAST OF HONSHU,   

P:  4APR2024 161889    38.0N  141.0E 4.0-5.6 AAAAA  Off East Coast Honshu      

 

O:  3APR2024 18:09:31  41.9N  141.5E MB=4.5  EMSC   HOKKAIDO, JAPAN REGION       

P:  2APR2024 161920    41.0N  141.0E 3.5-5.4 AAAAA  Hokkaido, Japan            

 

O:  3APR2024 22:41:52  44.3N  148.4E MB=4.9  EMSC   KURIL ISLANDS                

P:  5APR2024 161921    44.0N  148.0E 3.5-5.4 AAAAA  Hokkaido, Japan            

 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 03APR2024 12:42:18  32.3N  115.2W ML=2.1  EMSC   BAJA CALIFORNIA, MEXICO

O: 03APR2024 10:18:09  32.4N  115.2W ML=2.5  EMSC   BAJA CALIFORNIA, MEXICO

O:  3APR2024 10:21:34  32.4N  115.2W ML=2.4  EMSC   BAJA CALIFORNIA, MEXICO      

P:  4APR2024 161893    32.6N  116.1W 2.5-4.9 AAAAA  So. California             

 

O:  3APR2024 10:00:15  38.8N  122.7W MD=2.6  EMSC   NORTHERN CALIFORNIA          

O: 03APR2024 13:38:33  38.8N  122.8W MD=2.8  EMSC   NORTHERN CALIFORNIA

O: 03APR2024 20:53:39  38.8N  122.8W MD=2.4  EMSC   NORTHERN CALIFORNIA

O: 04APR2024 01:27:29  38.8N  122.5W MD=2.0  EMSC   NORTHERN CALIFORNIA

O: 04APR2024 06:50:50  38.8N  122.8W MD=2.8  EMSC   NORTHERN CALIFORNIA

P:  3APR2024 161867    38.5N  122.7W 2.5-4.7 AAAAA  Central California         

 

NEIC reported these earthquakes of M 2.8 and 3.0 in Northern California were felt with intensity up to IV in the area(s) of  Northern California in the Geysers.

 

O:  3APR2024 08:57:03  38.9N  124.1W MD=2.3  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  3APR2024 161943    40.2N  124.2W 2.5-4.8 ABAAA  Off Coast of No. Calif     

P:  5APR2024 161867    39.4N  123.3W 2.5-4.9 AAAAA  Central California         

 

ALASKA

 

O:  3APR2024 11:35:03  55.9N  154.9W ML=3.3  EMSC   SOUTH OF ALASKA              

P:  4APR2024 161961    54.8N  158.7W 3.5-5.3 ABCAA  Alaska Peninsula           

 

O:  4APR2024 06:27:25  58.1N  151.7W ML=3.4  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 29MAR2024 161720    60.1N  148.4W 3.2-5.0 BBBAA  Central Alaska             

 

NEIC reported this earthquake of M 3.4 in Southern Alaska was felt with intensity up to III in the area(s) of  Southern Alaska in Ouzinkie.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

No events of M>=2 were located in the northwestern U.S. or western Canada today.

 

ROCKY MOUNTAINS REGION

 

O: 03APR2024 15:56:38  31.6N  104.0W ML=2.0  EMSC   WESTERN TEXAS

O: 03APR2024 22:40:37  31.6N  104.5W ML=2.0  EMSC   WESTERN TEXAS

O:  4APR2024 01:38:32  31.6N  104.4W ML=2.8  EMSC   WESTERN TEXAS                

P:  7APR2024 161891    31.6N  103.6W 2.0-4.4 BAAAA  SW U.S.A                   

 

O:  3APR2024 13:41:09  41.3N  111.6W ML=2.4  EMSC   UTAH                         

P:  4APR2024 161908    39.7N  110.8W 2.0-3.9 ABAAA  Utah area                  

 

EASTERN U.S./CANADA

 

O: 03APR2024 15:32:28  35.7N   97.4W ML=2.5  EMSC   OKLAHOMA CITY AREA, OKLAHOMA

O: 04APR2024 01:33:20  35.7N   97.4W ML=2.7  EMSC   OKLAHOMA

O:  3APR2024 10:01:25  34.9N   97.3W ML=2.3  EMSC   OKLAHOMA                     

P:  3APR2024 161902    34.0N   98.0W 2.0-3.9 AAAAA  Southern Plains             

 

NEIC reported these earthquakes of M 2.5 and 2.7 in Oklahoma were felt with intensity up to V in the area(s) of  Oklahoma in Arcadia.

 

O:  3APR2024 09:29:32  45.1N   81.0W MB=2.1  ECAN OF NEYAASHIINIGMIING, ON       

P:  6APR2024 161937    43.0N   77.0W 2.0-4.2 BCCAA  New York State             

 

O: 03APR2024 10:20:50  28.7N   99.3W ML=2.0  EMSC   SOUTHERN TEXAS

O:  3APR2024 09:53:27  28.7N   99.3W ML=2.0  EMSC   SOUTHERN TEXAS               

P:  5APR2024 161852    28.0N   98.0W 3.0-4.6 AAAAA  Northern Mexico            

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

MAJOR EARTHQUAKE DAMAGING IN TAIWAN

 

EARTHQUAKE SUMMARY FOR APRIL 2, 2024

 

A major M 7.4 earthquake damaged much of the Island of Taiwan today. International Press reports indicated that this event and several strong aftershocks killed at least 7 while injuring more than 700. The quake occurred about 20 km south of Hualien and damaged and toppled buildings while causing many damaging landslides. It is the strongest earthquake to hit Taiwan in at least 25 years - since September 20, 1999 (M 7.7) - the strongest event in Taiwan in the past 35 years. Major earthquakes have most recently hit with M>=7.5 in Taiwan on November 14, 1986 (M 7.8); July 24, 1978 (M 8.0); April 24, 1972 (M 7.7) and January 25, 1972 (M 7.7). JMA gave today's event M 7.7 and reported several minor tsunami waves. A tsunami warning was also made for Taiwan but the Pacific Tsunami Warning Center (PTWC) reported that no damaging tsunami waves had been reported nor were any now expected. NEIC reported it was felt with intensity up to IX (major damage) in the area southwest of Hualien City, Taiwan, EMSC reported it was also felt in mainland China as a double quake in Nanjing City nearly 1000 km from the epicenter, in Wuxi City with mild shaking; Shanghai City, Hong Kong, Hangzhou, Shaoxing, Zhonggeng, Xiamen, and Quanzhou.  PHIVOLCS reported it at M 7.5 was felt in the Philippines with intensity II in Itbayat, Batanes, and I in Basco, Mahatao, Ivana, Uyugan,  and Sabtang, Batanes. This event may be related to the upcoming solar eclipse of April 8, 2024. It is interesting to note that the total eclipse path through North America is near 103 degrees from Taiwan throughout and some enhanced seismicity is the northeastern U.S. and eastern Canada may be expected following this event in Taiwan. The most likely area affected by strong energy from Taiwan in the U.S. is southern and Baja California which is near 103 degrees from today's epicenter and subject to far-field seismic triggering at this time. This distance also passes through areas of Utah and portions of Ontario, Nunuvat and Quebec, Canada. It is likely that the recent geomagnetic storm helped promote this earthquake in Taiwan. The storm occurred at the end of March, 2024 and was one of the largest in recent years as reported in this summary. It had been expected to affect most strongly areas near the geomagnetic equator and at high latitudes. Taiwan is located about 10 degrees north of the local geomagnetic equator. The timing is also suspicious as maximum ionospheric ring current intensities occur about 4-9 days after such storms near 10 degrees either side of the geomagnetic equator.

 

A foreshock in Taiwan with M 4.2 occurred about 100 km west of today's mainshock about four hours before the mainshock. Moderate to strong aftershocks of today's M 7.4 are expected for the next several days. NEIC reported the foreshock was felt with intensity II in Pizitou, Taiwan.

 

CWB gives the following maximum intensities per County in Taiwan as:

 

       

        Hualien County          7                                                              

        Yilan   County          6                                          

        Nantou  County          5                                        

        Taichung County         5                                       

        Kaohsiung County        4                                           

        Changhua County         5                                           

        Taitung  County         4                                            

        Yunlin   County         4                                           

        Taipei   County         5                                            

        Chiayi   County         4                                            

        Miaoli   County         6                                             

        Taoyuan  County         5                                            

        Tainan   County         4                                            

        Hsinchu  County         5                                             

        Penghu   County         3                                            

        Pingtung County         4                                         

        Lienchiang County       2                                         

 

Far-field earthquake triggering is possible with earthquakes of M 7.5 or greater. In the case of Taiwan, the most likely triggering zones - near 144 degrees and 103 degrees from Taiwan do not contain many areas of high seismicity and far-field triggering is likely to be muted. Following is a listing of potential triggering sites with this earthquake:

 

180 degrees: Brazil, Argentina,

144 degrees: Panama, Colombia, South Sandwich Islands, East Pacific Rise, eastern Caribbean, Venezuela

120 degrees: Western Mexico, Michoacan, Jalisco, SE U.S., Northern Mid-Atlantic, 

103 degrees: Southern, Baja California, Utah, Nunuvat, Ontario, Quebec Canada, NE U.S., South Africa, Spain, Morocco, Portugal, 

90 degrees: Northwest U.S., Italy, Mediterranean, East Africa Rift, 

72 degrees: Tonga, Fiji, Kermadec Is. Turkey,

60 degrees: Iran, Fox Islands,

52 degrees: Rat, Andreanof Is, Pakistan

 

Tsunamis from today's event were located in Hualien with 1-3 meters, Taitung (0.3-1 meter); in Philippines with 0.3-1 meter at Basco.

 

Forecasts 161195 had expected today's earthquake within about 25 km was likely at the end of March or early April, 2024. The foreshocks to the southwest had been expected in forecast 161857 within about 50 km. These earthquakes are located at the fourth node (90 degrees) from the M 6.7 in Macquarie of March 3 and may have been promoted by energy from that source.

 

O: 03APR2024 06:28:46  23.5N  120.3E ML=4.3  EMSC   TAIWAN

O:  2APR2024 19:26:33  23.4N  120.2E MW=4.2  EMSC   TAIWAN                       

P:  4APR2024 161857    24.0N  121.0E 4.0-6.4 AAAAA  Taiwan                     

 

O: 03APR2024 04:08:08  23.7N  121.8E mb=4.5  EMSC   TAIWAN

O: 03APR2024 00:50:46  23.8N  121.6E mb=5.2  EMSC   TAIWAN

O: 03APR2024 01:39:37  23.8N  121.8E ML=5.5  EMSC   TAIWAN

O: 03APR2024 01:53:57  23.8N  121.6E mb=5.1  EMSC   TAIWAN

O: 03APR2024 03:45:35  23.8N  121.8E mb=4.8  EMSC   TAIWAN

O: 03APR2024 03:57:18  23.8N  121.6E Mw=4.9  EMSC   TAIWAN

O: 02APR2024 23:58:09  23.9N  121.6E Mw=7.4  EMSC   TAIWAN

O: 03APR2024 01:49:39  23.9N  121.9E mb=5.1  EMSC   TAIWAN

O: 03APR2024 02:38:29  23.9N  121.6E mb=4.9  EMSC   TAIWAN

O: 03APR2024 03:12:30  23.9N  121.6E ML=4.6  EMSC   TAIWAN

O: 03APR2024 03:37:07  23.9N  121.5E ML=4.1  EMSC   TAIWAN

O: 03APR2024 05:22:07  23.9N  121.6E ML=4.0  EMSC   TAIWAN

O: 03APR2024 05:38:42  23.9N  121.6E ML=4.0  EMSC   TAIWAN

O: 03APR2024 06:31:34  23.9N  121.6E mb=4.8  EMSC   TAIWAN

O: 03APR2024 00:11:27  24.0N  121.8E mb=6.2  EMSC   TAIWAN

O: 03APR2024 00:23:39  24.0N  121.7E ML=4.4  EMSC   TAIWAN

O: 03APR2024 00:43:57  24.0N  121.8E mb=5.2  EMSC   TAIWAN

O: 03APR2024 01:17:42  24.0N  121.8E mb=5.1  EMSC   TAIWAN

O: 03APR2024 02:14:37  24.0N  121.9E mB=5.8  EMSC   TAIWAN

O: 03APR2024 04:34:44  24.0N  121.7E Mw=4.8  EMSC   TAIWAN

O: 03APR2024 05:23:51  24.0N  121.7E mb=4.6  EMSC   TAIWAN

O: 03APR2024 01:11:13  24.1N  121.7E ML=4.4  EMSC   TAIWAN

O: 03APR2024 01:15:35  24.1N  121.7E ML=4.4  EMSC   TAIWAN

O: 03APR2024 01:45:44  24.1N  121.7E ML=4.2  EMSC   TAIWAN

O: 03APR2024 02:13:39  24.1N  121.8E mb=4.7  EMSC   TAIWAN

O: 03APR2024 02:35:07  24.1N  121.6E ML=4.0  EMSC   TAIWAN

O: 03APR2024 03:20:54  24.1N  121.6E mb=4.7  EMSC   TAIWAN

O: 03APR2024 04:21:16  24.1N  121.7E ML=4.1  EMSC   TAIWAN

O: 03APR2024 00:35:41  24.2N  121.7E ML=5.6  EMSC   TAIWAN

O: 03APR2024 00:46:44  24.2N  121.8E mb=5.7  EMSC   TAIWAN

O: 03APR2024 01:09:40  24.2N  121.7E mb=5.1  EMSC   TAIWAN

O: 03APR2024 02:28:18  24.2N  121.8E mb=5.2  EMSC   TAIWAN

O: 03APR2024 03:01:41  24.2N  121.8E ML=4.4  EMSC   TAIWAN

O: 03APR2024 03:22:04  24.2N  121.7E ML=4.2  EMSC   TAIWAN

O: 03APR2024 03:35:21  24.2N  121.9E mb=5.1  EMSC   TAIWAN

O: 03APR2024 04:48:43  24.2N  121.7E ML=4.1  EMSC   TAIWAN

O: 03APR2024 05:28:04  24.2N  121.7E ML=4.6  EMSC   TAIWAN

O: 03APR2024 05:33:21  24.2N  121.8E ML=4.3  EMSC   TAIWAN

O: 03APR2024 06:09:23  24.2N  121.7E ML=4.2  EMSC   TAIWAN

O:  3APR2024 06:33:58  24.2N  121.9E MB=5.0  EMSC   TAIWAN                       

P: 28MAR2024 161595    24.0N  121.0E 4.0-5.5 BAAAA  Taiwan                     

P: 31MAR2024 161595    24.0N  123.0E 4.0-5.4 BAAAA  Taiwan                     

 

 

A strong earthquake also occurred today southeast of Taiwan in the area of the Northern Mariana Islands. NEIC reported this event of M 6.2 was felt with maximum intensity IV ENE of Saipan. Like the earthquake in Taiwan, this event lies about 10 degrees north of the local geomagnetic equator and was probably promoted by strong ionospheric currents following the geomagnetic storm of late March, 2024.  This is the strongest earthquake in the Mariana Islands within about 200 km of this epicenter since an M 6.4 on August 28, 2018 and prior to that an M 6.6 on February 5, 2005. Forecasts 161835 and 161571 had expected this activity in the Mariana Islands was likely in late March or early April, 2024.

More significant activity in this region may be expected in the next several days.

 

O: 02APR2024 22:16:48  15.8N  147.0E mb=5.4  EMSC   MARIANA ISLANDS REGION

O:  2APR2024 09:54:13  15.7N  147.0E MB=6.0  EMSC   MARIANA ISLANDS REGION       

O:  2APR2024 09:54:09  15.8N  146.8E MB=6.2  ANSS   MARIANA ISLANDS REGION       

P:  2APR2024 161835    17.0N  147.0E 4.0-5.4 ABAAA  No. Marianas               

P: 24MAR2024 161571    17.0N  147.0E 4.0-5.4 CBAAA  No. Marianas               

 

An unusual M 3.0 occurred today in eastern Texas near the Louisiana border about an hour prior to the mainshock in Taiwan. NEIC reported it was felt with intensity up to IV in Chireno, Texas. This continues a series of light to  moderate earthquakes near the antipode of Tropical Storm Neville and may  be related to those earlier events. It may also be a precursor to the event in Taiwan. The last earthquake within about 150 km of this epicenter in eastern Texas was an M 3.2 on January 20, 2019. Today's event was preceded 20 hours earlier by an M 2.8 about 200 km southwest of today's event. Forecast 161648 had expected enhanced seismicity within about 150 km of this epicenter was likely in lat March or early April, 2024.

 

O:  2APR2024 22:17:27  31.5N   94.4W ML=2.8  EMSC   EASTERN TEXAS                

O:  2APR2024 22:17:27  31.5N   94.4W ML=3.0  ANSS   EASTERN TEXAS                

O:  2APR2024 02:03:19  30.1N   96.6W ML=2.8  ANSS   EASTERN TEXAS                

P: 23MAR2024 161648    33.0N   95.0W 2.0-4.3 CBAAA  Southeast U.S.              

 

A strong nor'easter is likely to occur in the northeastern U.S. over the next two days. Besides promoting regional seismicity in the northeastern U.S. such storms are often associated with enhanced seismicity along the Pacific-North American transition zone as previously detailed in this summary. The current storm, however is traveling up the Appalachian mountains and does not appear to be likely to have the effects of ocean  approaching storms. While possible a triggered moderate to strong earthquake in the western U.S. or Canada seems unlikely at this time with this storm. Enhanced earthquakes in the Baja or Southern California area, however are still considered likely as this region is at 103 degrees from the M 7.5 in  Taiwan of April 2.

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 03APR2024 06:28:46  23.5N  120.3E ML=4.3  EMSC   TAIWAN

O:  2APR2024 19:26:33  23.4N  120.2E MW=4.2  EMSC   TAIWAN                       

P:  4APR2024 161857    24.0N  121.0E 4.0-6.4 AAAAA  Taiwan                     

 

O: 03APR2024 04:08:08  23.7N  121.8E mb=4.5  EMSC   TAIWAN

O: 03APR2024 00:50:46  23.8N  121.6E mb=5.2  EMSC   TAIWAN

O: 03APR2024 01:39:37  23.8N  121.8E ML=5.5  EMSC   TAIWAN

O: 03APR2024 01:53:57  23.8N  121.6E mb=5.1  EMSC   TAIWAN

O: 03APR2024 03:45:35  23.8N  121.8E mb=4.8  EMSC   TAIWAN

O: 03APR2024 03:57:18  23.8N  121.6E Mw=4.9  EMSC   TAIWAN

O: 02APR2024 23:58:09  23.9N  121.6E Mw=7.4  EMSC   TAIWAN

O: 03APR2024 01:49:39  23.9N  121.9E mb=5.1  EMSC   TAIWAN

O: 03APR2024 02:38:29  23.9N  121.6E mb=4.9  EMSC   TAIWAN

O: 03APR2024 03:12:30  23.9N  121.6E ML=4.6  EMSC   TAIWAN

O: 03APR2024 03:37:07  23.9N  121.5E ML=4.1  EMSC   TAIWAN

O: 03APR2024 05:22:07  23.9N  121.6E ML=4.0  EMSC   TAIWAN

O: 03APR2024 05:38:42  23.9N  121.6E ML=4.0  EMSC   TAIWAN

O: 03APR2024 06:31:34  23.9N  121.6E mb=4.8  EMSC   TAIWAN

O: 03APR2024 00:11:27  24.0N  121.8E mb=6.2  EMSC   TAIWAN

O: 03APR2024 00:23:39  24.0N  121.7E ML=4.4  EMSC   TAIWAN

O: 03APR2024 00:43:57  24.0N  121.8E mb=5.2  EMSC   TAIWAN

O: 03APR2024 01:17:42  24.0N  121.8E mb=5.1  EMSC   TAIWAN

O: 03APR2024 02:14:37  24.0N  121.9E mB=5.8  EMSC   TAIWAN

O: 03APR2024 04:34:44  24.0N  121.7E Mw=4.8  EMSC   TAIWAN

O: 03APR2024 05:23:51  24.0N  121.7E mb=4.6  EMSC   TAIWAN

O: 03APR2024 01:11:13  24.1N  121.7E ML=4.4  EMSC   TAIWAN

O: 03APR2024 01:15:35  24.1N  121.7E ML=4.4  EMSC   TAIWAN

O: 03APR2024 01:45:44  24.1N  121.7E ML=4.2  EMSC   TAIWAN

O: 03APR2024 02:13:39  24.1N  121.8E mb=4.7  EMSC   TAIWAN

O: 03APR2024 02:35:07  24.1N  121.6E ML=4.0  EMSC   TAIWAN

O: 03APR2024 03:20:54  24.1N  121.6E mb=4.7  EMSC   TAIWAN

O: 03APR2024 04:21:16  24.1N  121.7E ML=4.1  EMSC   TAIWAN

O: 03APR2024 00:35:41  24.2N  121.7E ML=5.6  EMSC   TAIWAN

O: 03APR2024 00:46:44  24.2N  121.8E mb=5.7  EMSC   TAIWAN

O: 03APR2024 01:09:40  24.2N  121.7E mb=5.1  EMSC   TAIWAN

O: 03APR2024 02:28:18  24.2N  121.8E mb=5.2  EMSC   TAIWAN

O: 03APR2024 03:01:41  24.2N  121.8E ML=4.4  EMSC   TAIWAN

O: 03APR2024 03:22:04  24.2N  121.7E ML=4.2  EMSC   TAIWAN

O: 03APR2024 03:35:21  24.2N  121.9E mb=5.1  EMSC   TAIWAN

O: 03APR2024 04:48:43  24.2N  121.7E ML=4.1  EMSC   TAIWAN

O: 03APR2024 05:28:04  24.2N  121.7E ML=4.6  EMSC   TAIWAN

O: 03APR2024 05:33:21  24.2N  121.8E ML=4.3  EMSC   TAIWAN

O: 03APR2024 06:09:23  24.2N  121.7E ML=4.2  EMSC   TAIWAN

O:  3APR2024 06:33:58  24.2N  121.9E MB=5.0  EMSC   TAIWAN                       

P: 28MAR2024 161595    24.0N  121.0E 4.0-5.5 BAAAA  Taiwan                     

P: 31MAR2024 161595    24.0N  123.0E 4.0-5.4 BAAAA  Taiwan                     

 

O:  2APR2024 14:37:20  41.9N   79.4E MB=4.1  EMSC   KYRGYZSTAN                   

P:  3APR2024 161925    42.0N   79.0E 4.0-5.5 AAAAA  Kirgizstan/Xinjiang        

 

EMSC reported this earthquake of M 4.6 in Kazakhstan at Almaty, Besqaynar auyldyq Okrug among others,  was felt with intensity up to III in the area(s) of  

 

INDONESIA AND PHILIPPINES

 

O:  2APR2024 12:19:25   0.8N  124.4E ML=4.2  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 26MAR2024 161525     0.0N  125.0E 4.0-5.6 CAAAA  Mindanao, Philippines      

 

O:  2APR2024 15:55:37   3.3S  123.4E MB=4.9  EMSC   SULAWESI, INDONESIA          

O: 02APR2024 16:17:10   3.3S  123.3E mb=4.9  EMSC   SULAWESI, INDONESIA

P:  1APR2024 161813     1.0S  123.0E 4.0-5.4 ACAAA  Sulawesi area              

 

O:  3APR2024 01:02:22   5.7S  112.4E ML=4.4  EMSC   JAVA SEA                     

O: 02APR2024 18:35:47   5.5S  112.6E ML=4.0  EMSC   JAVA SEA

P:  4APR2024 161810     6.0S  112.0E 4.0-5.6 AAAAA  So. of Bali                

 

BMG reported this earthquake of M 5.6 North of Java, Indonesia  was felt with intensity up to III in the area(s) of  North of Java, Indonesia in Kab. Rembangk, Bojonegoro, Tuban, Lamongan, Gresik and Bangkalan.

 

O:  2APR2024 21:23:42   7.9S  128.3E MB=4.4  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P:  4APR2024 161795     6.0S  128.0E 4.0-5.4 ABAAA  Banda Sea                  

 

O:  3APR2024 04:51:22   8.5N  126.7E MB=5.1  EMSC   MINDANAO, PHILIPPINES        

O: 03APR2024 05:45:06   8.5N  126.9E ML=4.9  EMSC   MINDANAO, PHILIPPINES

P: 31MAR2024 161525     8.0N  127.0E 4.0-5.4 BAAAA  Halmahera                   

 

O:  2APR2024 09:10:44  11.3N  126.5E MB=4.9  EMSC   PHILIPPINE ISLANDS REGION    

P:  2APR2024 161828    12.0N  126.0E 3.5-4.9 AAAAA  Luzon, Philippines         

P: 26MAR2024 161563    12.0N  126.0E 3.5-4.9 CAAAA  Luzon, Philippines          

 

O: 02APR2024 22:16:48  15.8N  147.0E mb=5.4  EMSC   MARIANA ISLANDS REGION

O:  2APR2024 09:54:13  15.7N  147.0E MB=6.0  EMSC   MARIANA ISLANDS REGION       

P:  2APR2024 161835    17.0N  147.0E 4.0-5.4 ABAAA  No. Marianas               

P: 24MAR2024 161571    17.0N  147.0E 4.0-5.4 CBAAA  No. Marianas               

 

CENTRAL AND SOUTH AMERICA

 

O:  3APR2024 02:02:10   1.1N   85.2W ML=5.2  EMSC   OFF COAST OF ECUADOR         

P: 23MAR2024 161523     4.0N   83.0W 4.0-6.0 CCCAA  Ecuador                     

 

O:  2APR2024 08:38:22  12.6S   76.8W ML=4.0  EMSC   NEAR COAST OF CENTRAL PERU   

P:  8APR2024 162003    13.0S   77.0W 4.0-5.6 CAAAA  Central Peru               

 

O:  2APR2024 23:16:51   5.4N   72.4W MB=4.9  EMSC   COLOMBIA                     

P: 30MAR2024 161521     7.0N   73.0W 4.0-5.9 ABAAA  Colombia                   

 

O:  3APR2024 03:48:00  13.8N   89.9W ML=4.1  EMSC   EL SALVADOR                  

P:  4APR2024 161822    13.0N   90.0W 3.5-5.6 AAAAA  Guatemala                  

P: 27MAR2024 161560    14.0N   91.0W 3.5-5.3 CAAAA  Guatemala                  

 

NEIC reported this earthquake of M 4.3 in  El Salvador was felt with intensity up to III in the area(s) of  El Salvador  in Jujutla.

EMSC reported light noise and shaking in El Salvador at San Antonio Del Monte.

 

O:  2APR2024 13:26:27  15.6N   92.1W ML=4.0  EMSC   CHIAPAS, MEXICO              

P:  2APR2024 161823    14.0N   92.0W 3.5-5.4 ABAAA  Guatemala                  

P: 26MAR2024 161560    15.0N   92.0W 3.5-5.2 CAAAA  Guatemala                  

 

O:  3APR2024 03:32:23  10.4S   75.5W MB=5.0  EMSC   CENTRAL PERU                 

P:  3APR2024 162002    10.0S   75.0W 3.5-5.6 AAAAA  Brazil                     

P: 29MAR2024 161735    11.0S   74.0W 4.0-5.9 BABAA  Central Peru                

 

NEIC reported this earthquake of M 5.0 in Peru was felt with intensity up to VI in the area(s) of  Peru in Oxapampa.

EMSC reported intensity II in Chorrillos, Miraflores.

 

 

O: 02APR2024 11:28:43  16.4N   94.3W ML=4.1  EMSC   OAXACA, MEXICO

O:  2APR2024 11:10:08  15.6N   94.2W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 28MAR2024 161557    17.0N   94.0W 3.5-5.5 BBAAA  Chiapas, Mexico            

 

O:  2APR2024 15:13:38  17.5N   94.7W ML=4.0  EMSC   VERACRUZ, MEXICO             

O:  2APR2024 16:15:39  17.9N   95.2W ML=4.0  EMSC   VERACRUZ, MEXICO             

P:  3APR2024 161819    18.0N   95.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

P: 28MAR2024 161557    17.0N   94.0W 3.5-5.5 BAAAA  Chiapas, Mexico            

 

O:  2APR2024 20:36:39  18.6N   68.7W MD=3.7  EMSC   DOMINICAN REPUBLIC           

P:  3APR2024 161838    18.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

P: 26MAR2024 161576    18.0N   68.0W 3.4-5.2 CAAAA  Puerto Rico                

 

O:  2APR2024 08:04:28  21.0N   99.2W ML=3.9  EMSC   HIDALGO, MEXICO              

P: 29MAR2024 161575    19.0N   99.0W 3.5-5.1 BBAAA  Oaxaca, Mexico             

 

O:  2APR2024 18:54:33  25.0N  109.4W ML=3.8  EMSC   GULF OF CALIFORNIA           

P:  2APR2024 161845    26.0N  111.0W 3.5-5.2 AABAA  Gulf of California         

 

O: 02APR2024 10:48:29  27.7N  112.0W ML=3.8  EMSC   GULF OF CALIFORNIA

O: 03APR2024 04:39:32  27.7N  112.1W ML=4.2  EMSC   GULF OF CALIFORNIA

O: 03APR2024 06:21:12  27.7N  112.0W ML=3.4  EMSC   GULF OF CALIFORNIA

O: 02APR2024 10:43:48  27.9N  111.8W ML=3.3  EMSC   GULF OF CALIFORNIA

O: 02APR2024 10:51:22  27.9N  112.3W ML=3.3  EMSC   GULF OF CALIFORNIA

O:  2APR2024 09:50:47  27.7N  112.5W ML=3.4  EMSC   GULF OF CALIFORNIA           

P: 26MAR2024 161583    28.0N  111.0W 3.5-5.1 CABAA  Gulf of California         

 

O: 03APR2024 161583    36.9S   72.8W ML-5.2  ANSS   Bio-Bio, Chile             

P: 03APR2024 162035    36.0S   71.0W 4.0-5.6 CABAA  Bio-Bio, Chile             

 

GUC  reported this earthquake of M 5.1 in Bio-Bio, Chile was felt with intensity up to IV in the area(s) of  Bio-Bio, Chile in Cobquecura.

NEIC reported this earthquake of M 4.9 in Bio-Bio, Chile was felt with intensity up to IV in the area(s) of  Bio-Bio, Chile in Tome.

 

 

AFRICA AND EUROPE

 

EMSC reported an earthquake of M 3.7 in Crete was felt with intensity up to III in the area(s) of  Crete in Greece at Arkalochori, Alagni, Kallithea, Vatheianos Kampos, Heraklion Nea Alikarnassos, Kato Asites, Mories, Sykologos. This event occurred seconds after the M 7.4 in Taiwan.

 

O:  2APR2024 15:38:59  26.0S   29.0E ML=3.1  EMSC   SOUTH AFRICA                 

P: 23MAR2024 161754    27.0S   30.0E 3.0-4.6 CAAAA  Rep. South Africa          

 

O:  2APR2024 13:33:44  36.5N   27.8E ML=4.5  EMSC   DODECANESE IS.-TURKEY BORDER R

P:  5APR2024 161906    37.0N   29.0E 3.5-5.0 BAAAA  Turkey                     

 

NEIC reported this earthquake of M 4.2 in Greece was felt with intensity up to III in the area(s) of  Greece in Symi.

EMSC reported this earthquake of M 4.6  in Dodecanese Islands, Greece was felt with intensity up to III in the area(s) of  Dodecanese Islands, Greece in Simi, Rhodes, Kos, Asfendiou,   and in Turkey in Kumbahce, Carsi, Eskicesme,  Icmeler, Iskele, Orhaniye among others.  

 

O:  2APR2024 19:07:42  43.0N   18.6E MW=4.0  EMSC   MONTENEGRO                   

P:  4APR2024 161913    44.0N   18.0E 3.0-4.9 AAAAA  Adriatic Sea               

P: 25MAR2024 161659    43.0N   18.0E 3.0-4.9 CAAAA  Adriatic Sea               

 

EMSC reported these earthquakes of M 4.0 and M 4.7 in Montenegro was felt with intensity up to III in the area(s) of  Montenegro in iBosnia and Herzegovina at Gacko, Bileca, Niksic, Trebinje among others.

NEIC reported this earthquake of M 4.0 in Bosnia and Herzegovina was felt with intensity up to III in the area(s) of  Bosnia and Herzegovina in Bileca.

 

SOUTHWEST PACIFIC

 

No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.

 

OCEAN RIDGES

 

O:  3APR2024 03:01:08  31.9S   77.4E MB=5.0  EMSC   MID-INDIAN RIDGE             

P: 29MAR2024 161771    37.0S   79.0E 4.0-5.6 BCAAA  So. Indian Ocean           

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  2APR2024 16:34:37  43.2S  170.9E MW=3.9  EMSC   SOUTH ISLAND OF NEW ZEALAND  

P: 27MAR2024 161776    42.0S  173.0E 3.0-5.1 BBBAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

O:  2APR2024 09:32:54  44.7N  149.2E MB=5.5  EMSC   KURIL ISLANDS                

P:  5APR2024 161921    44.0N  148.0E 3.5-5.4 BAAAA  Hokkaido, Japan            

P: 25MAR2024 161690    45.0N  151.0E 3.5-5.7 CAAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  2APR2024 19:07:23  31.4N  114.5W ML=3.9  EMSC   GULF OF CALIFORNIA           

P:  6APR2024 161892    30.6N  114.6W 2.0-4.4 BAAAA  SW U.S.A                   

P: 27MAR2024 161633    30.2N  114.1W 2.0-3.9 BAAAA  SW U.S.A                   

 

O:  2APR2024 09:16:46  31.4N  115.5W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO      

P:  6APR2024 161892    30.6N  114.6W 2.0-4.4 BAAAA  SW U.S.A                    

P: 28MAR2024 161638    32.4N  115.8W 2.5-4.7 BAAAA  So. California             

 

O:  2APR2024 12:09:24  32.4N  115.2W ML=2.5  EMSC   BAJA CALIFORNIA, MEXICO      

P:  4APR2024 161893    32.6N  116.1W 2.5-4.9 AAAAA  So. California              

P: 30MAR2024 161638    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

 

O:  3APR2024 00:56:01  35.5N  117.5W ML=2.5  EMSC   SOUTHERN CALIFORNIA          

P:  2APR2024 161897    35.8N  117.6W 2.5-4.7 AAAAA  So. California             

P: 28MAR2024 161599    36.2N  117.9W 2.5-4.6 BAAAA  California/Nevada area     

 

O:  2APR2024 14:17:56  35.9N  119.9W MD=2.1  EMSC   CENTRAL CALIFORNIA           

P: 29MAR2024 161602    36.1N  120.1W 2.5-4.7 BAAAA  Central California         

 

O:  3APR2024 02:48:09  36.4N  121.0W MD=2.5  EMSC   CENTRAL CALIFORNIA           

P:  6APR2024 161864    36.4N  121.0W 2.5-4.6 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.5 in Central California was felt with intensity up to III in the area(s) of  Central California in Pinnacles.

 

O:  3APR2024 01:01:43  36.7N  114.9W ML=2.4  EMSC   NEVADA                       

P: 27MAR2024 161601    38.7N  115.4W 2.5-4.5 CBAAA  California/Nevada area     

 

O:  2APR2024 15:48:12  38.5N  119.5W MD=2.0  EMSC   CENTRAL CALIFORNIA           

P:  4APR2024 161863    38.8N  119.6W 2.5-4.6 AAAAA  California/Nevada area     

 

O:  3APR2024 03:25:38  38.5N  122.7W ML=2.9  EMSC   NORTHERN CALIFORNIA          

O: 03APR2024 05:15:09  38.8N  122.8W MD=2.4  EMSC   NORTHERN CALIFORNIA

P:  3APR2024 161867    38.5N  122.7W 2.5-4.7 AAAAA  Central California         

 

NEIC reported this earthquake of M 3.0 in Northern California was felt with intensity up to III in the area(s) of  Northern California in Santa Rosa.

EMSC reported moderate shaking in Santa Rosa.

 

O:  2APR2024 14:13:14  39.4N  119.7W ML=2.0  EMSC   NEVADA                       

P:  7APR2024 161863    39.1N  119.6W 2.5-4.6 BAAAA  California/Nevada area     

 

O:  3APR2024 02:38:21  40.3N  124.6W MD=2.0  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  3APR2024 161943    40.2N  124.2W 2.5-4.8 AAAAA  Off Coast of No. Calif     

 

O:  2APR2024 18:17:42  42.0N  119.6W ML=2.1  EMSC   NEVADA                       

P: 28MAR2024 161661    40.2N  119.6W 2.5-4.4 BBAAA  California/Nevada area     

 

ALASKA

 

O:  3APR2024 00:39:55  62.2N  144.8W ML=3.2  EMSC   CENTRAL ALASKA               

P: 28MAR2024 161724    63.2N  145.5W 3.2-4.9 BAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 02APR2024 22:28:40  46.7N  122.8W ML=2.3  EMSC   WASHINGTON

O:  2APR2024 21:20:39  46.6N  122.7W ML=2.9  EMSC   WASHINGTON                   

P:  5APR2024 161957    46.9N  122.0W 2.0-4.1 BAAAA  Washington state, U.S.     

 

NEIC reported this earthquake of M 2.9 in Washington State was felt with intensity up to III in the area(s) of  Washington State in Onalaska.

 

O:  2APR2024 18:21:15  53.1N  132.9W ML=3.3  EMSC   QUEEN CHARLOTTE ISLANDS REGION

P:  4APR2024 161967    54.0N  133.0W 3.0-5.6 AAAAA  British Colombia            

 

O:  2APR2024 18:21:15  53.1N  132.9W MB=3.3  ECAN OF QUEEN CHARLOTTE, BC         

P:  4APR2024 161967    54.0N  133.0W 3.0-5.6 AAAAA  British Colombia           

P: 27MAR2024 161703    53.0N  133.0W 3.0-5.1 BAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 02APR2024 20:41:14  31.7N  104.4W ML=2.1  EMSC   WESTERN TEXAS

O:  3APR2024 04:08:15  31.6N  104.5W ML=2.0  EMSC   WESTERN TEXAS                

P: 27MAR2024 161636    31.4N  104.8W 2.0-4.3 CAAAA  SW U.S.A                   

 

O: 02APR2024 22:01:03  44.5N  115.2W ML=2.2  EMSC   SOUTHERN IDAHO

O:  3APR2024 01:07:57  44.3N  114.8W ML=2.1  EMSC   SOUTHERN IDAHO               

P:  3APR2024 161929    44.4N  114.1W 2.0-4.0 AAAAA  Montana/Idaho              

 

O:  2APR2024 15:53:36  46.9N  112.5W ML=3.2  EMSC   WESTERN MONTANA              

P: 26MAR2024 161697    45.6N  111.9W 2.0-3.9 CBAAA  Yellowstone/Wyoming        

 

NEIC reported this earthquake of M 3.1 in Western Montana was felt with intensity up to III in the area(s) of  Western Montana in Lincoln.

 

NEIC reported an earthquake of M 2.5 in Utah was felt with intensity up to IV in the area(s) of  Utah in Cedar City.

 

EASTERN U.S./CANADA

 

O:  2APR2024 22:17:27  31.5N   94.4W ML=2.8  EMSC   EASTERN TEXAS                

P: 23MAR2024 161648    33.0N   95.0W 2.0-4.3 CBAAA  Southeast U.S.             

 

O:  2APR2024 11:24:16  36.1N   89.8W MD=2.5  EMSC   SOUTHEASTERN MISSOURI        

P:  5APR2024 161880    36.3N   89.5W 2.0-4.0 BAAAA  New Madrid area            

 

NEIC reported this earthquake of M 2.5 in Missouri was felt with intensity up to III in the area(s) of  Missouri in Steele.

 

O:  1APR2024 07:04:15  49.6N   65.2W MB=2.2  ECAN OF GRANDE-VALL├⌐E, QC          

P:  2APR2024 161918    49.0N   66.0W 2.0-3.9 AAAAA  E. of Maine                

P: 30MAR2024 161664    49.0N   66.0W 2.0-4.1 AAAAA  E. of Maine                

 

O: 31MAR2024 15:04:38  78.8N   94.6W MB=4.5  ECAN OF GRISE FIORD, NU             

P:  9APR2024 161996    80.0N   90.0W 4.0-5.6 CBAAA  Arctic Ocean Region        

 

O: 30MAR2024 01:43:44  47.7N   69.9W MB=1.5  ECAN OF SAINT-SIM├⌐ON, QC           

P:  2APR2024 161935    47.3N   70.5W 2.0-4.1 AAAAA  New England                

P: 25MAR2024 161671    47.0N   69.0W 2.0-4.0 BAAAA  Maine                      

 

O:  3APR2024 09:29:32  45.1N   81.0W MB=2.1  ECAN OF NEYAASHIINIGMIING, ON       

P: 23MAR2024 161685    46.0N   81.0W 2.0-4.1 CAAAA  Ohio/Lake Erie             

 

O:  3APR2024 06:06:44  49.5N   91.2W MB=1.6  ECAN OF IGNACE, ON                  

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

A major M 7.4-7.7 earthquake has struck Taiwan, the largest in at least 25 years in the area. Considerable damage, deaths and injuries have been reported. For more details see the Updates section of this summary.

 

 

April  3, 2024

 

A major M 7.4 earthquake damaged much of the Island of Taiwan today. International Press reports indicated that this event and several strong aftershocks killed at least 7 while injuring more than 700. The quake occurred about 20 km south of Hualien and damaged and toppled buildings while causing many damaging landslides. It is the strongest earthquake to hit Taiwan in at least 25 years. JMA gave this event M 7.7 and reported several minor tsunami waves. A tsunami warning was also made for Taiwan but the Pacific Tsunami Warning Center (PTWC) reported that no damaging tsunami waves had been reported nor were any now expected. CWB reported damaging intensities throughout much of Taiwan with some shaking also in mainland China.

 

 

MODERATELY STRONG QUAKE HITS NORTHERN HONSHU, JAPAN

 

EARTHQUAKE SUMMARY FOR APRIL 1, 2024

 

 

The strongest earthquake in the world today occurred in northern Honshu, Japan. NEIC reported it was felt with intensity up to VII in Northern Honshu in Kuji. The last earthquake with equal or larger magnitude within about 150 km of this epicenter occurred on May 5, 2023 with M 5.9. At the time of this earthquake this summary noted in this regard:

 

 

The strong seismicity in the region near Honshu, Japan which began with an M 6.2 yesterday in northwestern Honshu continued today. The largest of these was an M 5.9 south of Hokkaido but an aftershock off northwestern Honshu of M 5.6-5.8 also occurred with additional damage and casualties.

 

"The aftershock of M 5.6-5.8 also occurred today off the northwest coast of Honshu, Japan. This follows an M 6.2 reported in the previous issue of this summary.  Today's aftershock did some damage in the region and killed at least one person. NEIC reported it was felt with maximum intensity IV in Ishikawa and Niigata with II-III in Nagano, Kyoto, Shizuoka and Tokushima Prefectures, Japan.

 

This activity appears to be related to the full moon of May 5 and accompanying lunar eclipse as noted in this and previous issues of this summary as:

 

"A strong earthquake of M 6.2 occurred in western Japan today in the Ishikawa Prefecture. No tsunami warning was issued and none was observed. No abnormalities were reported at the Shika power plant or in the Kashiwazaki-Karina plant in Niigata Prefecture. NEIC reported maximum intensity VIII in Suzu, Ishikawa and IV in Niigata and Ishikawa with II-III shaking in Nagano, Gifu, Tokyo, Saitama, Kawagawa and Aichi Prefectures. This earthquake occurred within about an hour of local solar noon and was probably promoted by high tidal stresses with today's full moon and lunar eclipse which maximize near this hour as previous reported in this summary:

 

 

The last earthquake within about 150 km of this epicenter in western Honshu, Japan was an M 6.2 on November 22, 2014 with the last of larger magnitude in this region an  6.5-6.6 on July 16, 2007." (May 5, 2023)

 

Forecast 161666 had expected this event in this area was likely towards the end of March, 2024. This epicenter is at 101 degrees from the M 6.7 in the Macquarie Island area of March 3, 2024. It is likely that this earthquake was promoted by energy from that event. The second largest earthquake of the day today was an M 5.5 in the Northern East Pacific Rise. This event is also at 101 degrees from Macquarie Island.

 

O:  1APR2024 19:24:35  40.2N  141.6E MW=5.9  EMSC   NEAR EAST COAST OF HONSHU,   

P: 28MAR2024 161666    41.0N  143.0E 3.5-5.5 BAAAA  Hokkaido, Japan            

 

O: 01APR2024 15:31:09   8.3N  103.4W mb=4.5  EMSC   NORTHERN EAST PACIFIC RISE

O:  1APR2024 14:45:17   8.4N  103.3W MW=5.5  EMSC   NORTHERN EAST PACIFIC RISE   

 

The strongest earthquake in the U.S. or Canada today was an M 4.0 in the Kodiak Island region of Alaska. This is the strongest earthquake in the Kodiak, Alaska area since an M 4.1 on November 6, 2023. The last earthquake in the Kodiak area of significantly larger magnitude was an M 4.5 on January 25, 2023. At the time this summary noted:

 

 

"The strongest earthquake in the U.S. or Canada today was an M 4.5 in the Kodiak Island region of Alaska. This is the strongest earthquake in the Kodiak Island area since an M 4.6 on October 12, 2022. The only earthquakes of significantly larger magnitude in the Kodiak area in the past 2.5 years was an M 4.9 on January 3, 2021 and an M 4.8 on January 11, 2022." (January 25, 2023)

 

Forecast 161722 had expected today's Kodiak event was likely towards the end of March, 2024.

 

NEIC reported this earthquake of M 4.0 in Southern Alaska was felt with intensity up to IV in the area(s) of  Southern Alaska in Nanwalek.

 

O:  1APR2024 07:18:19  58.9N  152.7W ML=4.0  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 26MAR2024 161722    60.2N  153.2W 3.2-4.9 BBAAA  Central Alaska             

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O:  1APR2024 06:51:25  23.4N  120.2E ML=4.1  EMSC   TAIWAN                       

P: 28MAR2024 161595    24.0N  121.0E 4.0-5.5 BAAAA  Taiwan                     

 

O:  2APR2024 05:33:17  54.9N  161.8E MB=4.5  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 24MAR2024 161704    53.0N  161.0E 4.0-5.5 CBAAA  E. of Kamchatka            

 

O:  1APR2024 21:31:46  65.0N  170.3W ML=3.7  EMSC   NEAR S COAST OF CHUKOTKA, RUSS

 

O:  2APR2024 00:03:22  23.4N  124.8E MW=4.5  EMSC   SOUTHWESTERN RYUKYU ISL., JAPA

P: 31MAR2024 161595    24.0N  123.0E 4.0-5.4 AABAA  Taiwan                      

 

INDONESIA AND PHILIPPINES

 

O:  1APR2024 10:32:54   5.3S  102.6E ML=4.0  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 30MAR2024 161548     5.0S  103.0E 4.0-5.4 AAAAA  So. of Sumatera            

 

O:  1APR2024 18:20:38   5.7N  126.4E ML=4.0  EMSC   MINDANAO, PHILIPPINES        

P: 25MAR2024 161525     5.0N  126.0E 4.0-5.5 CAAAA  Halmahera                  

 

O:  2APR2024 06:03:59   7.9S  114.4E ML=4.2  EMSC   BALI SEA                     

P: 26MAR2024 161743    11.0S  115.0E 4.0-5.4 CCAAA  So. of Indonesia           

 

O:  2APR2024 02:52:08  12.0N  142.5E MB=4.7  EMSC   SOUTH OF MARIANA ISLANDS     

P: 23MAR2024 161577    12.0N  144.0E 4.0-5.4 CAAAA  So. Marianas/Guam          

 

O:  2APR2024 06:36:51  13.1N  120.5E ML=4.2  EMSC   MINDORO, PHILIPPINES         

P: 26MAR2024 161564    13.0N  121.0E 3.5-5.0 CAAAA  Luzon, Philippines         

 

CENTRAL AND SOUTH AMERICA

 

O:  1APR2024 20:00:20   8.6S   76.2W ML=4.0  EMSC   CENTRAL PERU                 

P: 29MAR2024 161735    11.0S   74.0W 4.0-5.9 ACBAA  Central Peru               

 

O:  1APR2024 06:57:30   9.3N   84.4W ML=4.0  EMSC   COSTA RICA                   

P: 24MAR2024 161522     9.0N   84.0W 3.5-5.3 CAAAA  Costa Rica                 

 

O:  1APR2024 13:23:31  10.4S   75.6W ML=4.4  EMSC   CENTRAL PERU                 

P: 29MAR2024 161735    11.0S   74.0W 4.0-5.9 AABAA  Central Peru               

 

O:  1APR2024 07:45:30  10.8N   86.7W ML=4.0  EMSC   OFF COAST OF COSTA RICA      

P: 28MAR2024 161570    10.0N   86.0W 3.5-5.1 BAAAA  Nicaragua                   

 

O:  1APR2024 07:41:13  14.8N   92.7W ML=4.4  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 26MAR2024 161560    15.0N   92.0W 3.5-5.2 BAAAA  Guatemala                  

 

O:  1APR2024 07:42:33  16.2S   74.4W ML=4.0  EMSC   NEAR COAST OF SOUTHERN PERU  

P: 27MAR2024 161742    17.0S   73.0W 4.0-6.1 BAAAA  So. Peru/Bolivia           

 

O:  1APR2024 10:30:03  17.1N   99.7W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 27MAR2024 161574    16.0N   99.0W 3.5-5.3 BBAAA  Oaxaca, Mexico             

 

O:  1APR2024 10:16:27  18.2N   70.1W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P: 23MAR2024 161576    18.0N   69.0W 3.4-5.1 CAAAA  Puerto Rico                

 

O:  2APR2024 01:03:13  18.5N  103.2W ML=4.2  EMSC   MICHOACAN, MEXICO            

P: 28MAR2024 161568    18.0N  104.0W 3.5-5.1 BAAAA  Michoacan, Mexico          

 

O: 01APR2024 12:50:23  18.6N  106.7W ML=4.2  EMSC   OFF COAST OF JALISCO, MEXICO

O:  2APR2024 05:00:29  18.8N  107.1W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO 

P: 28MAR2024 161568    18.0N  104.0W 3.5-5.1 BACAA  Michoacan, Mexico          

 

O:  2APR2024 05:19:48  19.8S   71.0W MB=4.9  EMSC   OFF COAST OF TARAPACA, CHILE 

P: 25MAR2024 161758    20.0S   71.0W 4.0-5.6 CAAAA  So. Peru/Bolivia           

 

O:  2APR2024 00:15:41  21.7S   68.6W MB=4.1  EMSC   ANTOFAGASTA, CHILE           

P: 28MAR2024 161751    23.0S   69.0W 4.0-5.6 BBAAA  Coast No. Chile            

 

O: 01APR2024 21:15:45  27.6N  111.6W ML=3.5  EMSC   GULF OF CALIFORNIA

O: 01APR2024 08:27:01  27.7N  111.6W ML=3.6  EMSC   GULF OF CALIFORNIA

O:  1APR2024 20:51:10  27.6N  111.6W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 26MAR2024 161583    28.0N  111.0W 3.5-5.1 BAAAA  Gulf of California         

 

 

AFRICA AND EUROPE

 

O:  1APR2024 17:05:19  26.6S   26.9E ML=3.0  EMSC   SOUTH AFRICA                 

P: 27MAR2024 161754    27.0S   27.0E 3.0-4.6 BAAAA  Rep. South Africa          

 

O:  1APR2024 14:24:06  73.0N    5.8E MW=4.0  EMSC   NORWEGIAN SEA                

P: 24MAR2024 161732    72.0N    0.0E 3.0-4.5 CAAAA  Norway                      

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

O:  1APR2024 08:33:04  17.7S  178.6W MB=4.4  EMSC   FIJI REGION                  

P: 29MAR2024 161745    19.0S  178.0W 4.0-5.6 ABAAA  Tonga Islands              

 

O:  1APR2024 21:11:19  21.1S  178.5W MB=4.7  EMSC   FIJI REGION                  

P: 29MAR2024 161745    19.0S  178.0W 4.0-5.6 ABAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 01APR2024 15:31:09   8.3N  103.4W mb=4.5  EMSC   NORTHERN EAST PACIFIC RISE

O:  1APR2024 14:45:17   8.4N  103.3W MW=5.5  EMSC   NORTHERN EAST PACIFIC RISE   

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  2APR2024 05:39:44  43.2S  170.9E MS=4.6  GEONET SOUTH ISLAND, NEW ZEALAND    

P: 27MAR2024 161776    42.0S  173.0E 3.0-5.1 BBBAA  So. Island, N.Z.           

 

GEONET reported this earthquake was felt with moderate intensity in the area of Hokitika, South Island, New Zealand. 101 felt reports were published including 61 of weak and 37 of light shaking; 3 moderate; 0 strong; 0 severe and 0 extreme shaking in northern South Island.

 

JAPAN AND KURIL ISLANDS

 

O:  2APR2024 05:08:28  32.3N  141.9E MB=4.6  EMSC   IZU ISLANDS, JAPAN REGION    

P: 24MAR2024 161628    32.0N  142.0E 4.0-5.4 CAAAA  Off East Coast Honshu      

 

O:  1APR2024 20:57:30  35.6N  141.0E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU,   

P: 27MAR2024 161629    35.0N  140.0E 4.0-5.5 BAAAA  Off East Coast Honshu      

P: 30MAR2024 161624    35.0N  139.0E 3.5-4.9 AABAA  No. Honshu, Japan          

 

O:  1APR2024 19:24:35  40.2N  141.6E MW=5.9  EMSC   NEAR EAST COAST OF HONSHU,   

P: 28MAR2024 161666    41.0N  143.0E 3.5-5.5 BAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  1APR2024 21:45:50  30.9N  114.6W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 27MAR2024 161633    30.2N  114.1W 2.0-3.9 BAAAA  SW U.S.A                   

 

O:  1APR2024 08:13:11  31.2N  115.5W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO      

P: 28MAR2024 161638    32.4N  115.8W 2.5-4.7 BBAAA  So. California             

 

O:  1APR2024 17:52:30  32.9N  116.2W ML=2.8  EMSC   SOUTHERN CALIFORNIA          

P: 30MAR2024 161638    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.9 in Southern California was felt with intensity up to III in the area(s) of  Southern California in Ocotillo Wells.

 

O:  1APR2024 20:20:29  35.7N  117.5W ML=2.1  EMSC   SOUTHERN CALIFORNIA          

O:  1APR2024 08:22:00  35.9N  117.7W ML=2.4  EMSC   CENTRAL CALIFORNIA            

P: 27MAR2024 161644    35.8N  117.6W 2.5-4.8 BAAAA  So. California             

 

NEIC reported this earthquake of M 2.5 in Central California was felt with intensity up to III in the area(s) of  Central California in Little Lake.

 

O:  1APR2024 08:46:59  38.2N  117.8W ML=2.5  EMSC   NEVADA                       

P: 29MAR2024 161661    40.0N  117.9W 2.5-4.4 ABAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.6 in Nevada was felt with intensity up to III in the area(s) of  Nevada in Mina.

 

O:  2APR2024 03:04:19  38.8N  122.8W MD=2.5  EMSC   NORTHERN CALIFORNIA          

P: 27MAR2024 161606    38.9N  122.8W 2.5-4.7 BAAAA  Central California         

 

ALASKA

 

No events of M>=3 were located in Alaska today.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

 

O: 01APR2024 21:16:58  43.3N  126.9W ML=3.1  EMSC   OFF COAST OF OREGON

O:  1APR2024 15:58:42  43.0N  126.3W ML=3.1  EMSC   OFF COAST OF OREGON          

P: 22MAR2024 161682    42.5N  126.8W 3.0-5.1 CAAAA  Off Coast of Oregon        

 

NEIC reported this earthquake of M 3.1 off the coast of Oregon  was felt with intensity up to III in the area(s) of  Oregon in Port Orford.

This area may see further volcanism in the next several weeks, perhaps most

likely with the solar eclipse of April 8. An M 5.7 hit the area with a strong aftershock

sequence on March 27, 2024.

 

ROCKY MOUNTAINS REGION

 

O: 02APR2024 05:00:43  31.6N  104.5W ML=3.4  EMSC   WESTERN TEXAS

O: 02APR2024 06:06:20  31.6N  104.5W ML=2.0  EMSC   WESTERN TEXAS

O: 01APR2024 18:34:43  31.7N  104.4W ML=2.0  EMSC   WESTERN TEXAS

O:  2APR2024 03:42:02  31.6N  104.3W ML=2.0  EMSC   WESTERN TEXAS                

P: 27MAR2024 161636    31.4N  104.8W 2.0-4.3 BAAAA  SW U.S.A                   

 

O:  1APR2024 19:38:05  32.1N  101.7W ML=2.9  EMSC   WESTERN TEXAS                

O:  1APR2024 12:44:27  32.4N  102.1W ML=2.3  EMSC   WESTERN TEXAS                

P: 24MAR2024 161635    32.4N  101.5W 2.0-4.3 CAAAA  SW U.S.A                   

 

O:  2APR2024 06:22:03  37.7N  113.1W ML=2.5  EMSC   UTAH                         

P: 24MAR2024 161655    37.0N  112.8W 2.0-4.0 CAAAA  Utah area                  

 

EASTERN U.S./CANADA

 

O:  1APR2024 14:11:20  28.9N   98.4W ML=2.7  EMSC   SOUTHERN TEXAS               

P: 29MAR2024 161589    28.0N   97.0W 3.0-4.4 AAAAA  Northern Mexico            

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

STRONG EARTHQUAKE IN BALLENY ISLANDS ANTIPODAL TO ICELANDIC VOLCANISM

 

EARTHQUAKE SUMMARY FOR MARCH 31, 2024

 

The strongest earthquake in the world today was an M 5.9 in the Balleny Islands south of New Zealand. The epicenter of this unfelt earthquake is exactly antipodal to the strong volcanic eruption in southern Iceland which has been ongoing for several weeks. It is likely that today's earthquake in the Balleny Islands was promoted by antipodal focusing of energy from the volcanic eruption in Iceland. Compare the eruption coordinates (63N 24W) with the epicenter of the M 5.9 in the Balleny Islands today (63S 156E) for antipodality. The last earthquake in the Balleny Islands with M>=5.9 occurred on July 6, 2023 also in connection with a volcanic eruption in Iceland. At the time this summary noted this relation as:

 

"The volcanic swarm of earthquakes in Iceland continued today near Reykjavik where many of the moderate quakes in this swarm were felt today. A volcanic warning has been issued by Icelandic authorites as more than 2000 light to moderate quakes have occurred in this region in the past two days.

 

...

 

 

NEIC reported these earthquake of M 4.2-4.5 in Iceland was felt with intensity II-III in the area(s) of Iceland in Keflavik, Suournes. The antipode of today's activity in Iceland is in the Balleny Islands south of Australia and New Zealand at 63S 156E. Some enhanced seismicity in  this area is likely with the swarm in Iceland.

...

 

 

The strongest earthquake of the day occurred near the antipode of the tremors in Iceland. This event of M 5.9 in the Balleny Islands was not reported felt in this remote epicentral area. This event occurred simultaneously with Solar Flare 7970, the strongest solar of the day and was probably promoted by Solar Flare Effects (SFE) associated with that flare." (July 6, 2023)

 

Also on January 11, 2024, a strong volcanic eruption in Iceland was related in this summary to the Balleny Islands as:

 

 

"An earthquake of M 4.5 occurred today in northeastern Iceland. NEIC reported it was felt with intensity up to VI in Hofn, Iceland. This follows a pair of antipodal earthquake in the Balleny Islands two day ago. At the time this summary noted in this regard:

 

"A series of moderate to strong earthquakes hit today at epicenters which were the antipodes of active volcanism. The strongest of these was an M 5.6-6.0 in the Balleny Islands south of New Zealand. This is exactly opposite on the earth to Iceland where volcanism has been active over the past several weeks and months.

 

...

 

 

The earthquake in the Balleny Islands was the strongest in that region in at least three years. A smaller M 5.5 hit the area on June 27, 2011. The last earthquakes of similar or larger magnitude in the region occurred on April 12, and April 16, 2007 with M 6.0 and 5.8.

 

The Balleny Islands are a remote sparsely populated region and today's earthquake was not reported felt in the region. Followers of the P103 theory may be interested to note that this epicenter is located at 103 degrees from the mainshock in Japan of March 11. This suggest that some triggering is possible at this distance from great earthquake because seismic energy is concentrated at the surface at this distance." (July 21, 2011)

 

It is important to note that this summary written nearly 13 years ago is completely congrueous with the current situation following a major quake in Japan at  103 degrees and a major eruption near the antipode in Iceland." (January 8, 2024)

 

The earthquake in Iceland was the beginning of a new eruption. Bubbling lava could be seen on video on the web. Another area where a volcanic eruption is occurring is in Mount Lewotobi Laki-Laki in Indonesia. This volcano is on Flores Island. Thousands have been evacuated following several days of eruption in this area." (January 11, 2024)

 

Forecast 161777 had expected enhanced seismicity in the area of the Balleny and Macquarie Island was likely at the end of March, 2024. A strong earthquake hit this region northeast of today's epicenter with M 6.7 on March 3, 2024 with a moderately strong aftershock of M 5.5 on March 25 with the strong geomagnetic storm of March 24-25. It is likely that today's event of M 5.9 in the Balleny Islands was promoted by stress redistribution with these event in Macquarie as well as with the major geomagnetic storm of late March, 2024.

 

O: 31MAR2024 17:01:52  62.8S  155.8E MW=5.9  EMSC   BALLENY ISLANDS REGION       

P: 26MAR2024 161777    59.0S  158.0E 3.0-4.9 BCBAA  Macquarie Island           

 

 

A strong M-class solar flare (M3.9) occurred on April 1, 2024 beginning about 1:13 UT and maximizing around 01:32 UT. It was accompanied by an M 5.3 in Papua New Guinea in the Bougainville area which occurred at 01:39 UT. This epicenter was at sub-solar conditions at the time of this flare and occurred near local solar noon. It is highly likely that the earthquake in New Guinea was promoted by Solar Flare Effects (SFE) associated with this flare.

 

Flare data:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

 170       0113   0132      0157   M3.9      (April 1, 2024)   6.2E-02  

 

 

Forecast 161549 had expected this earthquake in New Guinea within about 100 km to occur in late March. This epicenter is at 101-102 degrees from the M 7.5 in

Honshu, Japan of January 1, 2024 and the M 6.7 in Brazil of January 20, 2024 and may have been promoted by energy from those sources. A moderate earthquake today in Crete of M 4.8 was also at this distance from Brazil.

 

O:  1APR2024 01:39:04   6.2S  155.1E MB=5.3  EMSC   BOUGAINVILLE REGION, P.N.G.  

P: 24MAR2024 161549     7.0S  155.0E 4.0-5.5 CAAAA  Solomon Islands            

 

 

The strongest earthquake in the U.S. or Canada today was an M 4.9 in the Sverdrup Island area of Northern Canada, Nunavut. It was not reported felt in this remote area. This event is near the North Geomagnetic Pole and may have been promoted by the very strong geomagnetic storm of late March, 2024. That storm was  described in this summary as:

 

 

"The geomagnetic field saw severe storm conditions today. The AP level was 64.  High latitudes  saw severe storm conditions with AP 100. Middle latitudes were at strong storm conditions with AP 43. The last time high latitude AP was at 100 or greater was on November 4, 2021 when it reached 131. Planetary AP was 69 on that date. At that time this summary noted in regard to possible seismic triggering:

 

"The strongest earthquake in the world today was an M 5.8 in Ceram, Indonesia. BMG reported it was felt with intensity V in Sawai; IV in Wahai; III in Ambon and Masohi and Saparua, Indonesia. This continues a strong activation of the region of Indonesia which has accompanied the current geomagnetic storm. Indonesia is located on the geomagnetic equator and is often activated during such storms. The last earthquake within Seram, Indonesia within about 200 km of today's epicenter with M>=5.7 occurred on June 15, 2021 and September 25, 2019 with M 5.9 and M 6,5 respectively. " (November 4, 2021)

 

and

 

"The last time high latitude AP exceeded 120 was on December 15, 2006 when it hit AP 120 with global AP at 104. The earthquake in 2006 was followed several days later by an M 7.0 in Taiwan. The last time the AP disturbance at high latitudes exceeded today's index of 131 was on September 11-12 (AP 131 and 136).

The storm in September, 2005 was accompanied by an M 7.7 in New Ireland and an M 6.4 in the Nias region of Indonesia. This history suggests that a major earthquake is likely in the next several days. In general, strong geomagnetic storms see major earthquakes at the time of the storm's commencement or about 4-5 days later as the ionospheric ring currents at high latitude and about 10 degrees from the geomagnetic equator reemerge after the disturbance. This often includes a strong to major  earthquake. At this time such an event appears most likely near the geomagnetic equator or at high latitudes ... (November 5, 2021, March 25, 2024)

 

Today's event in Nunavut is the strongest within about 300 km of this epicenter since an M 5.0 on April 15, 2009 and an M 5.2 on August 14, 2001 - the only such events in the past 35 years. In both cases these earthquakes accompanied strong geomagnetic storms at high latitudes.

 

Forecast 161733 had expected enhanced seismicity in this region was likely at the end of March, 2024. This epicenter is located at 101 degrees from the M 6.9 in Papua New Guinea of March 23, 2024 and at 104 degrees from the Banda Sea M 7.1 of November 8, 2023 and may have been promoted by energy from those sources.

 

O: 31MAR2024 15:04:37  78.8N   94.5W MB=4.9  EMSC   SVERDRUP ISL., NUNAVUT, CANADA

P: 26MAR2024 161733    76.0N  107.0W 4.0-5.6 BCAAA  Arctic Ocean Region        

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O:  1APR2024 06:51:25  23.4N  120.2E ML=4.1  EMSC   TAIWAN                       

O:  1APR2024 06:51:25  23.4N  120.2E ML=4.1  EMSC   TAIWAN                       

P: 26MAR2024 161595    23.0N  122.0E 4.0-5.4 BABAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity IV in Chiayi; II in Yunlin, Tainan and I in Kaohsiung, Changhua Counties, Taiwan.

 

O: 31MAR2024 13:25:29  36.7N   71.4E MB=4.5  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 24MAR2024 161612    37.0N   71.0E 3.8-5.2 CAAAA  Hindu Kush/Pakistan        

 

O: 31MAR2024 22:55:04  44.3N   82.6E MB=4.3  EMSC   NORTHERN XINJIANG, CHINA     

P: 25MAR2024 161670    41.0N   78.0E 4.0-5.6 CCCAA  Kirgizstan/Xinjiang        

 

O: 31MAR2024 23:37:25  47.5N  142.7E MB=4.1  EMSC   SAKHALIN, RUSSIA             

P: 26MAR2024 161691    47.0N  143.0E 3.5-5.5 BAAAA  So. Kurils                  

 

 

INDONESIA AND PHILIPPINES

 

O: 31MAR2024 15:08:30   2.3S  138.3E MB=4.5  EMSC   PAPUA, INDONESIA             

P: 25MAR2024 161552     2.0S  139.0E 4.0-5.5 CAAAA  West Irian, PNG            

 

O:  1APR2024 01:39:04   6.2S  155.1E MB=5.3  EMSC   BOUGAINVILLE REGION, P.N.G.  

P: 24MAR2024 161549     7.0S  155.0E 4.0-5.5 CAAAA  Solomon Islands            

 

O: 31MAR2024 11:20:40   6.8S  129.6E MB=4.5  EMSC   BANDA SEA                    

O: 31MAR2024 13:30:49   6.8S  129.7E ML=4.0  EMSC   BANDA SEA

P: 25MAR2024 161531     6.0S  129.0E 4.0-5.4 CAAAA  Banda Sea                  

P: 27MAR2024 161553     5.0S  131.0E 4.0-5.7 BBBAA  West Irian, PNG            

 

O: 01APR2024 02:12:53   7.8N  125.2E ML=4.3  EMSC   MINDANAO, PHILIPPINES

O: 31MAR2024 21:16:44   8.3N  126.7E Mw=4.7  EMSC   MINDANAO, PHILIPPINES

O: 31MAR2024 15:57:19   8.7N  126.5E ML=4.0  EMSC   MINDANAO, PHILIPPINES        

P: 31MAR2024 161525     8.0N  127.0E 4.0-5.4 AAAAA  Halmahera                  

 

NEIC reported this earthquake of M 4.7 in Mindanao, Philippines was felt with intensity up to IV in the area(s) of  Mindanao, Philippines in Barcelona.

PHIVOLCS reported it with M 5.0 was felt with intensity V in Surigao Del Sur at Lingig and Hinatuan; in City of Bislig, Surigao del Sur and III in Boston, Davao Oriental and Nabuntura, Davao de Oro, Philippines.

 

O: 31MAR2024 08:00:31  13.3N  120.6E MB=4.9  EMSC   MINDORO, PHILIPPINES         

O: 31MAR2024 11:04:33  13.3N  120.6E mb=4.9  EMSC   MINDORO, PHILIPPINES

P: 26MAR2024 161564    13.0N  121.0E 3.5-5.0 BAAAA  Luzon, Philippines         

 

NEIC reported these earthquakes of M 4.9 and M 4.9 in Mindoro, Philippines were felt with intensity up to III in the area(s) of  Luzon, Philippines in Tayaman and V in Mamburao, Philippines.

PHIVOLCS reported these were felt with intensity IV in Mamburao, Abra De Ilog, Santa Cruz, Occidental Mindoro, Puerto Galera, San Teodoro, Baco, City of Calapan, Oriental Mindoro and III in Paluan, Occidental Mindoro and Naujan, Oriental Mindoro, Philippins.

 

O:  1APR2024 04:44:58  15.5N  120.5E MB=4.6  EMSC   LUZON, PHILIPPINES           

P: 26MAR2024 161564    13.0N  121.0E 3.5-5.0 BCAAA  Luzon, Philippines         

 

CENTRAL AND SOUTH AMERICA

 

O: 31MAR2024 09:13:43  27.6N  112.0W ML=3.5  EMSC   GULF OF CALIFORNIA

O: 31MAR2024 22:37:19  27.6N  112.0W ML=3.5  EMSC   GULF OF CALIFORNIA

O: 31MAR2024 18:41:24  27.8N  112.2W ML=3.4  EMSC   GULF OF CALIFORNIA

O: 31MAR2024 21:04:56  27.8N  111.9W ML=3.6  EMSC   GULF OF CALIFORNIA

O: 31MAR2024 21:07:15  27.9N  112.0W ML=3.5  EMSC   GULF OF CALIFORNIA

O: 31MAR2024 07:25:32  27.6N  111.9W ML=3.7  EMSC   GULF OF CALIFORNIA           

P: 26MAR2024 161583    28.0N  111.0W 3.5-5.1 BAAAA  Gulf of California         

 

O: 31MAR2024 14:19:05  14.1N   93.2W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 26MAR2024 161560    15.0N   92.0W 3.5-5.2 BAAAA  Guatemala                  

 

O: 31MAR2024 11:18:13   2.1S   79.9W ML=4.3  EMSC   NEAR COAST OF ECUADOR        

P: 29MAR2024 161535     4.0S   80.0W 4.0-5.6 ABAAA  Ecuador                    

 

EMSC reported this earthquake of M 4.3 in Ecuador was felt with intensity up to III in the area(s) of  Ecuador in Guayaquil with loud earthquake noise. 

 

O:  1APR2024 06:57:30   9.3N   84.4W ML=4.0  EMSC   COSTA RICA                    

P: 24MAR2024 161522     9.0N   84.0W 3.5-5.3 CAAAA  Costa Rica                 

P: 28MAR2024 161570    10.0N   86.0W 3.5-5.1 BABAA  Nicaragua                  

 

O: 31MAR2024 14:22:21  14.1N   93.1W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 31MAR2024 08:46:21  15.9N   94.1W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 28MAR2024 161557    17.0N   94.0W 3.5-5.5 BBAAA  Chiapas, Mexico            

 

O: 31MAR2024 21:41:38  17.3N  100.5W ML=4.2  EMSC   GUERRERO, MEXICO

O: 31MAR2024 20:32:26  17.2N  100.8W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 26MAR2024 161567    19.0N  101.0W 3.5-5.3 BBAAA  Michoacan, Mexico          

 

O:  1APR2024 05:22:57  17.7N   68.5W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 26MAR2024 161576    18.0N   68.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 31MAR2024 13:41:35  18.8N   72.4W ML=3.1  EMSC   HAITI REGION

O: 31MAR2024 21:10:47  17.9N   72.7W ML=3.1  EMSC   HAITI REGION                 

P: 24MAR2024 161580    20.0N   73.0W 3.0-4.6 CCAAA  Bahamas/No. Caribbean      

 

O: 31MAR2024 12:46:17  18.5N   69.1W ML=3.2  EMSC   DOMINICAN REPUBLIC

O: 01APR2024 04:28:53  18.6N   69.0W ML=3.0  EMSC   DOMINICAN REPUBLIC

O:  1APR2024 03:41:07  18.5N   68.9W ML=3.3  EMSC   DOMINICAN REPUBLIC           

P: 26MAR2024 161576    18.0N   68.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 31MAR2024 13:38:46  19.1N   65.9W MD=3.5  EMSC   PUERTO RICO REGION           

O: 31MAR2024 13:33:10  19.5N   65.7W MD=3.6  EMSC   PUERTO RICO REGION

O: 31MAR2024 16:37:02  19.6N   65.7W MD=3.8  EMSC   PUERTO RICO REGION

P: 22MAR2024 161579    20.0N   65.0W 3.0-4.7 CAAAA  Bahamas/No. Caribbean      

 

O: 31MAR2024 09:00:51  18.0N   66.8W MD=3.1  EMSC   PUERTO RICO

O: 31MAR2024 08:08:04  17.9N   66.9W MD=3.0  EMSC   PUERTO RICO REGION

O: 01APR2024 05:40:22  18.2N   67.2W MD=3.1  EMSC   MONA PASSAGE, PUERTO RICO

O: 31MAR2024 15:18:51  19.2N   67.1W MD=3.8  EMSC   PUERTO RICO REGION           

P: 26MAR2024 161576    18.0N   68.0W 3.4-5.2 BBAAA  Puerto Rico                

 

AFRICA AND EUROPE

 

O: 31MAR2024 13:30:12  41.4N    6.5W ML=2.2  EMSC   PORTUGAL                     

P: 28MAR2024 161687    42.0N    6.0W 3.0-5.6 BAAAA  Portugal                   

 

O: 31MAR2024 08:43:58  26.3S   27.7E ML=3.1  EMSC   SOUTH AFRICA                 

O: 31MAR2024 08:43:58  26.3S   27.7E ML=3.4  ANSS   SOUTH AFRICA                 

P: 27MAR2024 161754    27.0S   27.0E 3.0-4.6 BAAAA  Rep. South Africa          

 

NEIC reported this earthquake of M 3.4 in South Africa was felt with intensity up to IV in the area(s) of  South Africa in Westonaria.

 

O: 31MAR2024 10:38:01  34.4N   26.6E MB=4.6  EMSC   CRETE, GREECE                

P: 26MAR2024 161611    34.0N   26.0E 3.0-4.6 BAAAA  Crete                      

 

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

O: 31MAR2024 11:35:30  14.0S  171.9E MB=4.7  EMSC   VANUATU REGION               

P: 30MAR2024 161737    14.0S  172.0E 4.0-5.4 AAAAA  Fiji Islands               

 

O: 31MAR2024 14:51:58  17.6S  178.9W MB=4.5  EMSC   FIJI REGION                  

P: 29MAR2024 161745    19.0S  178.0W 4.0-5.6 ABAAA  Tonga Islands              

 

O: 31MAR2024 18:20:24  22.6S  171.6E MB=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 26MAR2024 161752    22.0S  172.0E 4.0-5.7 BAAAA  Loyalty Islands            

 

OCEAN RIDGES

 

O: 31MAR2024 17:01:52  62.8S  155.8E MW=5.9  EMSC   BALLENY ISLANDS REGION       

P: 26MAR2024 161777    59.0S  158.0E 3.0-4.9 BCBAA  Macquarie Island           

 

O: 31MAR2024 15:04:37  78.8N   94.5W MB=4.9  EMSC   SVERDRUP ISL., NUNAVUT, CANADA

P: 26MAR2024 161733    76.0N  107.0W 4.0-5.6 BCAAA  Arctic Ocean Region        

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 31MAR2024 10:36:18  34.8S  179.2E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 28MAR2024 161772    34.0S  179.0E 4.0-5.5 BAAAA  So. Kermadec Islands       

 

O: 31MAR2024 17:01:52  62.8S  155.8E MW=5.9  EMSC   BALLENY ISLANDS REGION       

P: 26MAR2024 161777    59.0S  158.0E 3.0-4.9 BCBAA  Macquarie Island           

 

JAPAN AND KURIL ISLANDS

 

O: 31MAR2024 20:19:52  47.8N  152.6E MB=4.0  EMSC   KURIL ISLANDS                

P: 23MAR2024 161692    47.0N  153.0E 3.5-5.4 CAAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 31MAR2024 22:35:23  31.2N  115.5W ML=3.1  EMSC   BAJA CALIFORNIA, MEXICO      

P: 28MAR2024 161638    32.4N  115.8W 2.5-4.7 BBAAA  So. California             

 

NEIC reported this earthquake of M 3.2 in Southern California was felt with intensity up to IV in the area(s) of  Southern California in Lake Henshaw.

EMSC reported moderate shaking in southern California at Pauma Valley, Aguanga, Valley Center, Julian, Escondido, Poway, Fallbrook, San Diego, Alpine, Santee, Menifee, Palm Springs, Huntington Beach, Torrance, North Hills.

 

O: 31MAR2024 17:17:27  38.2N  117.9W ML=2.1  EMSC   NEVADA                       

P: 27MAR2024 161600    38.6N  118.6W 2.5-4.5 BAAAA  California/Nevada area     

P: 29MAR2024 161661    40.0N  117.9W 2.5-4.4 ABAAA  California/Nevada area     

 

ALASKA

 

O: 31MAR2024 23:56:55  55.9N  149.7W ML=3.7  EMSC   GULF OF ALASKA               

P: 26MAR2024 161698    54.9N  149.9W 3.5-4.9 BAAAA  Alaska Peninsula           

 

NEIC reported this earthquake of M 3.3 in Southern Alaska was felt with intensity up to III in the area(s) of  Southern Alaska in Ugashik.

 

O: 31MAR2024 10:14:05  56.6N  156.4W ML=3.3  EMSC   ALASKA PENINSULA             

P: 24MAR2024 161698    54.7N  156.9W 3.5-4.9 CBAAA  Alaska Peninsula           

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 31MAR2024 07:23:41  45.0N  122.5W ML=2.1  EMSC   OREGON                       

P: 29MAR2024 161686    45.3N  121.7W 2.0-4.2 AAAAA  Oregon state, U.S.         

 

O:  1APR2024 05:08:58  47.8N  122.6W ML=2.8  EMSC   SEATTLE-TACOMA AREA, WASHINGTO

P: 29MAR2024 161696    48.4N  123.2W 2.0-4.4 AAAAA  Washington state, U.S.     

 

NEIC reported this earthquake of M 2.8 in Washington State was felt with intensity up to IV in the area(s) of  Washington State in Indianola.

EMSC reported light shaking in Washington at Kingston, Poulsbo.

 

ROCKY MOUNTAINS REGION

 

O: 31MAR2024 18:10:16  31.7N  104.4W ML=2.0  EMSC   WESTERN TEXAS

O: 31MAR2024 21:09:07  32.0N  103.8W ML=2.0  EMSC   WESTERN TEXAS

O: 31MAR2024 22:59:17  32.0N  103.4W ML=2.0  EMSC   WESTERN TEXAS

O:  1APR2024 03:07:56  31.7N  104.4W ML=2.0  EMSC   WESTERN TEXAS                

P: 27MAR2024 161636    31.4N  104.8W 2.0-4.3 BAAAA  SW U.S.A                   

 

O: 31MAR2024 16:01:26  32.9N  100.9W ML=2.8  EMSC   WESTERN TEXAS                

P: 24MAR2024 161635    32.4N  101.5W 2.0-4.3 CAAAA  SW U.S.A                   

 

O: 31MAR2024 09:22:54  44.7N  112.5W ML=2.7  EMSC   WESTERN MONTANA              

P: 26MAR2024 161697    45.6N  111.9W 2.0-3.9 BAAAA  Yellowstone/Wyoming        

P: 31MAR2024 161674    44.9N  113.4W 2.0-4.1 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 31MAR2024 15:04:37  78.8N   94.5W MB=4.9  EMSC   SVERDRUP ISL., NUNAVUT, CANADA

P: 26MAR2024 161733    76.0N  107.0W 4.0-5.6 BCAAA  Arctic Ocean Region        

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

MODERATELY STRONG QUAKE IN RAT ISLANDS, ALEUTIANS, ALASKA

 

EARTHQUAKE SUMMARY FOR MARCH 30, 2024

 

 

The strongest earthquake in the world today was an M 5.8 in the Rat Islands, Aleutians, Alaska. It was not reported felt in this remote area. This earthquake was not reported felt in this epicentral area. The last earthquake of equal or larger magnitude in the Rat Islands was an M 6.3 on December 14, 2022. At the time this summary noted:

 

 

"The strongest earthquake in the U.S. or Canada or the world today was an M 6.3 in the Rat Islands, Aleutians, Alaska. It was not reported felt in this remote region. A smaller earthquake of M 5.3 hit the Rat Islands on December 10, 2022. At the time this summary noted:

 

"The strongest earthquake in the U.S. or Canada today was an M 5.3 in the Rat Islands, Aleutians, Alaska. It was not reported felt in this remote epicentral area. The last earthquake with M>=5.3 in the Rat Islands was an M 6.3 half a year ago on June 4, 2022. At the time this summary noted in this regard:

 

 

"The event of M 6.3 in the Rat Islands was not reported felt in this remote area. This is the strongest earthquake in the Rat Islands since an M 6.4 on April 2, 2019. These appear to be aftershocks of the M 7.9 that hit about 50 km southeast of today's epicenter on June 23, 2014. Today's event occurred near local solar noon and was likely promoted by high tidal stresses which maximize near this hour. It may also have been promoted by the recent geomagnetic storm." (June 5, 2022)

 

Today's event also occurred near local solar noon and may have been promoted by high tidal stresses with the full moon of December 8." (December 14, 2022)

 

Forecast 161712 had expected today's event in the Rat Islands within about

150 km was likely around March 28, 2024.

 

O: 30MAR2024 16:28:58  52.1N  178.4E MW=5.8  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 28MAR2024 161712    52.0N  175.0E 4.0-5.8 AABAA  Rat Islands                

 

An unusual earthquake of M 3.0 occurred in the region of northern Ohio today. NEIC reported it was felt with intensity up to IV in Maple Ridge, Ohio. The last earthquake in Ohio within about 200 km of this epicenter with M>=3 occurred as an M 3.6 on August 28, 2023. At the time this summary noted this event as:

 

"An unusually large earthquake of M 3.7-4.3 shook areas of Ohio today. NEIC reported it was felt with intensity IV in Ohio at Geneva, Madison, Rock Creek, Austinburg, Thompson, Perry, Montville, Rome, Ashtabula, Jefferson and as far as New York, Ontario, Indiana with intensity II-IV. It follows a series of foreshocks in the region on August 24, 2023." (August 24, 2023)

 

When an M 4.2 hit the area on July 17, 2021 this summary noted:

 

"As often occurs the significant earthquake off the coast of Northern California was preceded several hours earlier by a significant earthquake in the northeastern U.S. In this case an M 4.2 occurred in Lake Erie, Ohio and was lightly felt in the area. Two earthquakes of equal or larger magnitude have occurred in the Lake Erie area of Ohio in the past 30 years - an M 4.4 on January 26, 2001 and an M 4.5 on September 25, 1998." (July 17, 2021)

 

As with that event today's quake in Ohio was closely associated with a strong M 5.9 along the North American-Pacific rim in the Rat Islands (see above).

 

Forecast 161684 had expected this event in this area was likely around March 28.

 

O: 30MAR2024 08:42:40  40.9N   81.1W ML=3.0  EMSC   OHIO                         

P: 28MAR2024 161684    42.0N   80.0W 2.0-4.4 ABAAA  Ohio/Lake Erie             

 

An M9.4 class solar flare occurred today beginning about 21:01 UT and maximizing around 21:15 UT March 30. The strongest earthquake immediately associated with this flare was an M 4.4 in Minahasa, Sulawesi at 21:15 UT. Earthquakes of M 5.1 in New Britain, New Guinea and an M 2.3 on the Virginia-North Carolina border also occurred during the course of this flare (among others). The timing of this flare may enhance seismicity along the western coast of North America in the area from California, Oregon and Washington states which were near local noon at the time of the flare. Flare data for this event follows:

 

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

  40       2101   2116      2215   M9.4      (March 30, 2024)   2.7E-01  

 

A strong series of moderate earthquakes occurred with M 4.9, 5.1, 5.3 and 5.5 in  Central Tonga and Fiji today. These events were not reported felt in this remote region.

 

Forecast 161759 had expected this activity within about 100 km was likely around

March 28, 2024.

 

O: 30MAR2024 14:38:27  19.7S  175.8W mb=4.9  EMSC   TONGA

O: 30MAR2024 17:35:49  19.7S  175.9W mb=5.1  EMSC   TONGA

O: 30MAR2024 16:44:25  19.6S  175.8W MW=5.3  EMSC   TONGA                        

O: 31MAR2024 03:01:45  19.8S  176.0W MW=5.5  EMSC   FIJI REGION                  

P: 28MAR2024 161759    20.0S  175.0W 4.0-5.7 BAAAA  Tonga Islands              

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 30MAR2024 20:27:35  29.7N   65.4E MB=4.0  EMSC   WESTERN AFGHANISTAN          

P: 26MAR2024 161590    29.0N   68.0E 3.5-4.9 BABAA  Pakistan                   

 

O: 31MAR2024 00:25:14  39.0N   70.8E MB=5.0  EMSC   TAJIKISTAN                   

P: 24MAR2024 161612    37.0N   71.0E 3.8-5.2 CBAAA  Hindu Kush/Pakistan        

 

NEIC reported this earthquake of M 5.0 in Tajikistan was felt with intensity up to III in the area(s) of  Tajikistan in Rasht.

EMSC reported moderate shaking in Tajikistan at Dushanbe, Abay, Shymkent,  and in Tashkent, Uzbekistan.

 

INDONESIA AND PHILIPPINES

 

O: 31MAR2024 06:20:53   0.4N  129.2E ML=4.1  EMSC   HALMAHERA, INDONESIA

O: 30MAR2024 19:22:57   2.3N  122.9E mb=4.3  EMSC   CELEBES SEA

O: 30MAR2024 07:27:26   0.3N  122.1E mb=4.4  EMSC   MINAHASA, SULAWESI, INDONESIA

O: 30MAR2024 21:15:58   1.3N  123.5E MB=4.4  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 26MAR2024 161525     0.0N  125.0E 4.0-5.6 BBBAA  Mindanao, Philippines      

 

O: 30MAR2024 22:51:55   5.9S  112.5E ML=4.1  EMSC   JAVA SEA

O: 30MAR2024 22:59:19   5.7S  112.6E ML=4.0  EMSC   JAVA SEA                      

P: 28MAR2024 161546     9.0S  108.0E 4.0-5.4 ACCAA  So. of Java                

 

O: 30MAR2024 22:55:51   6.3S  154.8E MW=5.1  EMSC   BOUGAINVILLE REGION, P.N.G.  

P: 24MAR2024 161549     7.0S  155.0E 4.0-5.5 CAAAA  Solomon Islands            

P: 28MAR2024 161539     6.0S  153.0E 4.0-5.6 AABAA  New Britain                

 

O: 31MAR2024 03:53:04   6.9S  129.8E MB=4.5  EMSC   BANDA SEA                    

P: 25MAR2024 161531     6.0S  129.0E 4.0-5.4 CAAAA  Banda Sea                  

 

O: 30MAR2024 10:59:01   8.2S  124.1E ML=4.2  EMSC   KEPULAUAN ALOR, INDONESIA    

P: 24MAR2024 161536     8.0S  123.0E 4.0-5.6 CAAAA  Flores Island area         

 

O: 30MAR2024 12:06:31   8.4S  119.3E ML=4.3  EMSC   FLORES REGION, INDONESIA     

P: 24MAR2024 161550     9.0S  118.0E 4.0-5.4 CABAA  Sumbawa Island area        

 

O: 30MAR2024 13:43:11   8.8N  126.7E ML=4.3  EMSC   MINDANAO, PHILIPPINES        

P: 31MAR2024 161525     8.0N  127.0E 4.0-5.4 AAAAA  Halmahera                  

 

NEIC reported this earthquake of M 4.6 in Mindanao, Philippines was felt with intensity up to III in the area(s) of  Mindanao, Philippines in Aras-asan.

 

CENTRAL AND SOUTH AMERICA

 

O: 30MAR2024 08:56:17   3.7S   80.9W ML=4.2  EMSC   PERU-ECUADOR BORDER REGION   

P: 29MAR2024 161535     4.0S   80.0W 4.0-5.6 AAAAA  Ecuador                    

 

O: 30MAR2024 18:34:55   9.4N   84.2W ML=4.6  EMSC   COSTA RICA                   

P: 24MAR2024 161522     9.0N   84.0W 3.5-5.3 CAAAA  Costa Rica                 

 

NEIC reported this earthquake of M 4.9 in Costa Rica was felt with intensity up to IV in the area(s) of  Costa Rica in Tamarindo.

EMSC reported strong shaking in Costa Rica at Mercedes, Puerto Cortes.

 

O: 31MAR2024 05:07:19  10.4S   75.6W ML=4.1  EMSC   CENTRAL PERU                  

P: 29MAR2024 161735    11.0S   74.0W 4.0-5.9 AABAA  Central Peru               

 

O: 31MAR2024 03:46:13  10.8N   86.2W MB=4.9  EMSC   OFF COAST OF COSTA RICA      

P: 28MAR2024 161570    10.0N   86.0W 3.5-5.1 BAAAA  Nicaragua                  

 

O: 31MAR2024 05:21:08  14.0N   93.3W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 31MAR2024 06:25:43  14.0N   93.3W ML=4.4  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 30MAR2024 11:47:33  14.0N   92.5W ML=4.2  EMSC   OFFSHORE GUATEMALA           

P: 26MAR2024 161560    15.0N   92.0W 3.5-5.2 BAAAA  Guatemala                  

 

O: 30MAR2024 11:21:34  16.1N   98.9W ML=4.3  EMSC   OFFSHORE GUERRERO, MEXICO

O: 30MAR2024 11:17:00  16.1N   98.9W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 27MAR2024 161574    16.0N   99.0W 3.5-5.3 BAAAA  Oaxaca, Mexico             

 

O: 31MAR2024 04:34:59  16.9N   95.1W ML=4.1  EMSC   OAXACA, MEXICO               

P: 28MAR2024 161557    17.0N   94.0W 3.5-5.5 BAAAA  Chiapas, Mexico            

 

O: 30MAR2024 22:39:37  18.8N   65.4W MD=3.4  EMSC   PUERTO RICO REGION           

P: 22MAR2024 161579    20.0N   65.0W 3.0-4.7 CAAAA  Bahamas/No. Caribbean      

 

O: 31MAR2024 00:57:51  17.9N   66.9W MD=3.0  EMSC   PUERTO RICO REGION

O: 31MAR2024 01:04:50  18.1N   68.3W MD=3.2  EMSC   MONA PASSAGE, DOMINICAN REPUBLIC

O: 30MAR2024 11:03:42  18.8N   67.5W MD=3.2  EMSC   PUERTO RICO REGION           

P: 26MAR2024 161576    18.0N   68.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 30MAR2024 08:35:05  21.1S   69.0W MB=4.4  EMSC   TARAPACA, CHILE              

P: 24MAR2024 161751    22.0S   69.0W 4.0-5.4 CAAAA  Coast No. Chile            

P: 28MAR2024 161751    23.0S   69.0W 4.0-5.6 ABAAA  Coast No. Chile            

 

O: 30MAR2024 06:56:45  21.6S   68.4W mb=4.1  EMSC   ANTOFAGASTA, CHILE

O: 30MAR2024 09:03:21  23.9S   70.6W ML=4.2  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

P: 28MAR2024 161751    23.0S   69.0W 4.0-5.6 AABAA  Coast No. Chile            

 

EMSC reported this earthquake of M 4.2 in Northern Chile was felt with intensity up to III in the area(s) of  Northern Chile in Antofagasta.

 

O: 30MAR2024 08:16:38  27.6N  112.0W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 26MAR2024 161583    28.0N  111.0W 3.5-5.1 BAAAA  Gulf of California         

 

AFRICA AND EUROPE

 

O: 30MAR2024 13:50:45  42.5N   43.6E ML=4.2  EMSC   GEORGIA (SAK'ART'VELO)

O: 30MAR2024 14:31:48  42.5N   43.5E ML=4.1  EMSC   GEORGIA (SAK'ART'VELO)

O: 30MAR2024 13:44:36  42.6N   43.6E MB=4.7  EMSC   GEORGIA (SAK'ART'VELO)       

P: 23MAR2024 161662    40.0N   44.0E 3.5-4.9 CCAAA  Caucasus/Caspian Sea       

 

EMSC reported these earthquakes of M 4.2 and M 4.6 in Georgia were felt with intensity up to III in the area(s) of  Georgia in Tbilisi, Zest'aponi, Batumi. 

 

SOUTHWEST PACIFIC

 

O: 30MAR2024 22:07:15  18.5S  174.0W MB=5.0  EMSC   TONGA                        

P: 27MAR2024 161744    19.0S  173.0W 4.0-5.7 BAAAA  Tonga Islands              

 

O: 30MAR2024 14:38:27  19.7S  175.8W mb=4.9  EMSC   TONGA

O: 30MAR2024 17:35:49  19.7S  175.9W mb=5.1  EMSC   TONGA

O: 30MAR2024 16:44:25  19.6S  175.8W MW=5.3  EMSC   TONGA                        

O: 31MAR2024 03:01:45  19.8S  176.0W MW=5.5  EMSC   FIJI REGION                  

P: 28MAR2024 161759    20.0S  175.0W 4.0-5.7 BAAAA  Tonga Islands              

 

O: 30MAR2024 18:24:00  23.1S  177.0W MB=4.8  EMSC   SOUTH OF FIJI ISLANDS        

P: 29MAR2024 161760    25.0S  177.0W 4.0-5.5 ABAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 30MAR2024 10:25:26  14.7S  109.3W MB=4.7  EMSC   CENTRAL EAST PACIFIC RISE    

 

O: 30MAR2024 09:48:15   4.4S  104.1W MW=5.1  EMSC   CENTRAL EAST PACIFIC RISE    

P: 27MAR2024 161542     5.0S  105.0W 4.0-5.4 BAAAA  No. East Pacific Rise      

 

O: 31MAR2024 04:55:21  85.3N   92.1E MB=4.3  EMSC   NORTH OF SEVERNAYA ZEMLYA    

P: 22MAR2024 161734    82.0N  119.0E 4.0-5.6 CCAAA  Arctic Ocean Region        

 

 

ZEALANDIA AND AUSTRALIA REGION

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today.

 

JAPAN AND KURIL ISLANDS

 

O: 30MAR2024 14:23:30  36.7N  141.5E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU,   

P: 26MAR2024 161624    37.0N  139.0E 3.5-5.0 BABAA  No. Honshu, Japan          

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 30MAR2024 19:30:50  34.1N  117.3W ML=3.0  EMSC   GREATER LOS ANGELES AREA, CALI

P: 30MAR2024 161639    34.1N  117.4W 2.5-4.4 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.1 in  Greater Los Angeles, California was felt with intensity up to III in the area(s) of  Greater Los Angeles, California  in San Bernardino.

EMSC reported light shaking with an earthquake noise in Fontana, California.

 

O: 30MAR2024 20:03:39  34.7N  116.3W ML=2.5  EMSC   SOUTHERN CALIFORNIA          

P: 29MAR2024 161641    34.6N  116.7W 2.5-4.4 AAAAA  So. California             

 

O: 30MAR2024 15:26:51  36.6N  121.3W ML=2.6  EMSC   CENTRAL CALIFORNIA           

P: 25MAR2024 161604    36.9N  121.7W 2.5-4.4 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in Central California was felt with intensity up to III in the area(s) of  Central California in Tres Pinos.

 

O: 30MAR2024 15:37:32  38.0N  118.8W MD=1.9  EMSC   CENTRAL CALIFORNIA           

P: 27MAR2024 161600    38.6N  118.6W 2.5-4.5 BAAAA  California/Nevada area     

 

O: 30MAR2024 09:15:01  38.8N  122.8W MD=2.6  EMSC   NORTHERN CALIFORNIA          

P: 27MAR2024 161606    38.9N  122.8W 2.5-4.7 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in Northern California was felt with intensity up to III in the area(s) of  Northern California in  the Geysers.

 

O: 30MAR2024 14:43:32  40.2N  125.1W ML=2.5  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 26MAR2024 161682    40.3N  124.7W 2.5-4.5 BAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 2.5 off the coast of Northern California  was felt with intensity up to III in the area(s) of  Northern California in Petrolia.

 

 

ALASKA

 

O: 30MAR2024 16:28:58  52.1N  178.4E MW=5.8  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 28MAR2024 161712    52.0N  175.0E 4.0-5.8 AABAA  Rat Islands                

 

O: 30MAR2024 12:12:01  69.2N  145.6W ML=3.0  EMSC   NORTHERN ALASKA              

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

No events of M>=2 were located in the northwestern U.S. or western Canada today.

 

ROCKY MOUNTAINS REGION

 

NEIC reported an earthquake of M 2.7 in Northern Montana was felt with intensity up to III in the area(s) of  Northern Montana in Augusta.

 

EASTERN U.S./CANADA

 

O: 30MAR2024 23:48:52  36.5N   80.9W ML=2.3  EMSC   VIRGINIA-N CAROLINA BORDER REG

P: 27MAR2024 161613    35.9N   82.8W 2.0-4.4 BABAA  Kentucky/Tennessee/NC      

P: 27MAR2024 161614    37.0N   77.0W 2.0-4.4 BABAA  Kentucky/Tennessee/NC      

 

O: 30MAR2024 08:42:40  40.9N   81.1W ML=3.0  EMSC   OHIO                         

P: 28MAR2024 161684    42.0N   80.0W 2.0-4.4 ABAAA  Ohio/Lake Erie             

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

NORTH ATLANTIC SEISMICITY EXPANDS

 

EARTHQUAKE SUMMARY FOR MARCH 29, 2024

 

A series of moderate earthquakes occurred today near local solar noon today

in the Northern Mid-Atlantic Ridge and included events of M 4.7, 4.9, 5.0 and 5.2. This is about 300 km south of the recent earthquakes in the area as reported in the previous issue of this summary:

 

"The remarkable series of moderate earthquakes at antipodal locations to Tropical Storms Megan and Neville in the Indian Ocean continued today. These occurred with an M 3.9 in the Gulf of Mexico and an M 4.6 in the northern Mid-Atlantic.

 

The stronger of these was the M 4.8 in the Northern Mid-Atlantic Ocean. This  event is slightly south of the M 5.5 on March 25, 2024. At the time this summary noted in this regard:

 

"The strongest earthquake in the world today was an M 5.5 in the northern mid-Atlantic Ridge area. It was not reported felt in this remote area. The last earthquake of M>=5.5 within about 200 km of this epicenter in the North Atlantic Ridge occurred as an M 6.0 on September 18, 2015 and prior to that an M 6.0 on September 5, 2013. A smaller M 4.6 hit the area to the south of this yesterday. This summary speculated it may have been triggered by antipodal focusing of energy associated with the landfall of Tropical Cyclone Megan as follows:

 

 

"An earthquake of M 4.6 occurred today in the Northern Mid-Atlantic. It was not felt in this remote epicentral area. It was likely promoted by antipodal energy from Tropical storm Megan which passed over the antipode to this epicenter three days ago and was expected in this summary at the time as:

 

"TC Megan (19P) continued today in the area North of Australia with winds up to 80 kts.  This system is expected to track to the southwest over the next week and to make landfall today. It could help promote enhanced seismicity the area of New Guinea and northern Australia during this period. It is currently nearly antipodal to the northern mid-Atlantic at 16N 43W where some promoted antipodal seismicity may occur in the next several days." (March 20, 2024)

 

Today's event in the northern Mid-Atlantic Ridge area is the largest reported

within about 250 km of this epicenter since an M 4.7 on July 23, 2023 and an M 5.0 on September 27, 2022." (March 25, 2024)

 

The M 4.8 today is about 150 km south of the M 5.5 on March 25 and is the strongest within about 150 km of today's epicenter since an M  5.2 on August 17m 2020. Further seismicity in this area of the Atlantic antipodal to the past of

TC Megan is considered likely in the next several days." (March 29, 2024)

 

TC Megan passed directly over the antipode of today's epicenters on March 17 as noted in this summary at the time:

 

"A tropical cyclone may be forming north of western Australia. This system is currently located at 13S 136E south of Papua New Guinea ..." (March 17, 2024)

 

Readers should note that the epicenter cited in mid-March for TC Megan (see above) at 13S 136E is antipodal to 13N 44W, the epicenter of the strong activity in the Northern Mid-Atlantic today. It is likely that antipodal focusing from TC Megan helped promoted the volcanism associated with today's events in the North Atlantic.

 

Forecast 161569 had expected today's activity was likely within about 200 km in the northern Mid-Atlantic Ridge was likely at the end of March, 2024.

 

Like the M 5.9 in Greece today, this activity is at 146 degrees from the M 7.1 in the Loyalty Islands of December 7, 2023 and may have been promoted by energy from that source.  It is also at 143 degrees from the Vanuatu event of M 6.7 on March 27, 2024 and at 105 degrees from the Xinjiang China earthquake of January 22, 2022 and may have been promoted by energy from those sources.

 

O: 29MAR2024 16:20:57  12.8N   44.8W mb=4.9  EMSC   NORTHERN MID-ATLANTIC RIDGE

O: 29MAR2024 17:58:36  12.8N   44.9W Mw=5.2  EMSC   NORTHERN MID-ATLANTIC RIDGE

O: 29MAR2024 16:47:59  12.9N   45.1W mb=4.7  EMSC   NORTHERN MID-ATLANTIC RIDGE

O: 29MAR2024 16:19:38  12.8N   45.0W MB=5.0  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 27MAR2024 161569    15.0N   45.0W 4.0-5.6 ACAAA  Mid-Atlantic Ridge         

 

Another unusual earthquake also occurred today along the antipodal path of TC Neville. Today's earthquake occurred in the Tamaulipas area of Mexico. Today's earthquake is the strongest within about 150 km of this epicenter since an  M 4.2 on June 5, 2023 and May 16, 2023 (M 5.0) and prior to that on June 25, 2013 (M 4.0). When the M 5.0 occurred west of today's epicenter on May 16, 2023, this summary noted:

 

 

"The M 5.0 in San Luis Potosi, Mexico occurred within minutes of local solar noon and may have been triggered by high tidal stresses which maximize near this hour. It is the strongest earthquake within about 200 km of this epicenter in more than 35 years. 

 

NEIC reported this earthquake of M 5.0 in San Luis Potosi, Mexico was felt with intensity II-III in the area(s) of Mexico in Tlalnepantla." (May 16, 2023)

 

This epicenter is north the volcanic area of central Mexico. It is likely that it was promoted by antipodal effects associated with TC Neville as reported in previous issues of this summary as for example:

 

 

"An earthquake of M 4.2 also occurred today in the Gulf of Mexico. Tropical Cyclone Neville passed over the antipode of this epicenter in the Gulf of Mexico three days ago in the area of the South Indian Ocean. This had been emphasized in the previous issue of this summary when an unusual earthquake in northern Mexico also followed this pattern as:

 

"The strongest earthquake in the U.S., Canada or vicinity today was an M 3.9 in northern Mexico in the Nuevo Leon region. This is the largest earthquake within about 150 km of this epicenter since an M 4.0 on March 18, 2014.  It is likely that antipodal energy from Tropical Cyclone Neville helped promote this event. TC Neville passed at the antipode to this event on March 26-27, 2024 at about 25S 82E (compare with the epicenter in Mexico of 26N 99W for antipodality). At the time the expected effects of TC Neville were outlined in this summary as:

 

"TC Neville (18S) continued today in the area North of W. Australia with winds up to 85 kts.  This system is expected to track to the west over the next week. It could help promote enhanced seismicity the area of Sumatra and Java during this period.  It is currently nearly antipodal to the Yucatan, Honduras and Guatemala and could help trigger further antipodal seismicity in this area in the next several days." (March 25, 2024, March 29, 2024)

 

Today's event occurred near local solar midnight and may have been promoted by strong tidal stresses. Forecast 161575 had expected enhanced seismicity near this epicenter was likely around March 29.

 

O: 29MAR2024 08:52:12  22.9N   99.4W ML=3.8  EMSC   TAMAULIPAS, MEXICO           

P: 29MAR2024 161575    19.0N   99.0W 3.5-5.1 ACAAA  Oaxaca, Mexico             

 

A moderately strong earthquake of M 5.6 also occurred today in the Bismarck Sea. The last earthquake significantly larger magnitude in the Bismarck Sea occurred on March 1, 2023. Today's event is probably an aftershock of that event which was described in this summary at the time as:

 

 

"The strongest earthquake in the world today was an M 6.5 in the Bismarck Sea near Papua New Guinea. NEIC reported this deep focus earthquake was felt with intensity II in Kainantu, Papua  New Guinea. The Bismarck Sea epicenter is located along the geomagnetic equator and was probably promoted by the current geomagnetic storm - the strongest in nearly six years - as it occurred near local solar noon. An M 6.3 hit the Bismarck Sea on May 9, 2022 about 400 km northwest of today's epicenter but the last earthquake within about 300 km of today's epicenter with M>=6.5 occurred  on October 10, 2018 with M 7.0. This event may have been triggered by stress redistribution from an M 6.2 in New Britain of February 25, 2023." (March 1, 2023)

 

Like the event on March 1, 2023, today's epicenter follows a strong M 6.9

in Papua New Guinea of March 23, 2024 and may have been promoted by stress redistribution following that earthquake.

 

Forecasts 161541 and 161540 had expected today's event within about 100 km was likely at the end of March, 2024.

 

O: 29MAR2024 09:57:05   4.5S  149.6E MW=5.6  EMSC   BISMARCK SEA                 

P: 22MAR2024 161541     5.0S  150.0E 4.0-5.4 CAAAA  New Ireland                

P: 28MAR2024 161540     3.0S  148.0E 4.0-5.4 ABBAA  New Ireland                

 

A moderate earthquake occurred with M 5.4 in the Kermadec Islands of New Zealand today. The last earthquake of larger magnitude in the Kermadec Islands occurred on February 9, 2024 with M 6.1 At the time this summary noted:

 

"The strongest earthquake in the world today was an M 6.1 in the Kermadec Islands, New Zealand. It was not reported felt in this remote area. This event occurred near local solar midnight and may have been promoted by tidal stresses which maximize near this hour. The last earthquake in this region of the Kermadec Islands with M>=6.1 occurred on April 24, 2023 (M 7.1) and March 16, 2023 (M 7.0)." (February 9, 2024)

 

Forecast 161753 had expected this event within about 100 km in the northern  Kermadec Islands was likely around March 26, 2024.

 

 

O: 29MAR2024 14:41:00  28.0S  178.0W MW=5.4  EMSC   KERMADEC ISLANDS REGION      

P: 26MAR2024 161753    28.0S  177.0W 4.0-5.6 BAAAA  No. Kermadec Islands       

 

A strong earthquake of M 5.9 shook the area of Greece today. This was reported in the previous issue of this summary as:

 

"The strongest earthquake in the world today was an M 5.8-5.9 in Greece. NEIC reported it was felt with intensity up to VII in Filiatra, Greece. EMSC reported strong shaking in Greece in Filiatra, Kyparissia, Tholo, Spiantza, Epitalio, Pyrgos, Vytineika, Gargalianoi, Dounaiika, Amaliada, Vasilikos, Amaliada, Savalia, Schinolakka, Pylos and as far as 230 km from the epicenter in Athens, Greece among other communities. No major damage was reported. A foreshock a minute before the mainshock was felt with moderate intensity in Greece at Filiatra, Tholo, Epitalio, Schinolakka, Pylos, Dounmaiika, Vasilikos, Amaliada, Pantokratoras, Xifytas and as far as 400 km from the epicenter in Athens and Heraklion. This is the strongest earthquake to occur in southern Greece within about 200 km of today's epicenter since an M 6.8 on October 24, 2018 and a series of event of M 6.7 on February 14, 2008; M 6.1 on February 20, 2008 and June 8, 2008. At the time this summary noted:

 

 

"A series of moderate to strong earthquakes hit the Ionian Sea of Greece today.

The strongest of these was an M 6.8 but the series included a number of events of M>=5. As the epicenter occurred under the Ionian Sea about 40 km from the nearest habitation, it was not as damaging as it may have been. NEIC reported maximum intensity VI in Zakinthos, Greece in Lithakia, Zakinthos, Argostolion, Pirgos Ilia, Makrisia. Intensity V was reported within about 300 km of the epicenter at Penteli, Attiki, Ambelakia, Aryirades, Kerkira, Sparti Lakonia, Leukas Levkas, Agrinion, Patrai Ahaia, Gargalianoi, Kiparissa, Kardamas, Planos Zakinthos, Mpokhali, Katastarion, Makhairadon, Greece. Other communities within about 350 km of the epicenter also reported light (II-III) to moderate (IV) shaking. The mainshock and most of the larger events occurred within minutes of local solar midnight. Tidal stresses maximize at this hour and with the full moon yesterday, it is likely that tidal stresses were important in the occurrence of this activity at this time in the Ionian Sea. This summary had noted tidal stresses which could trigger earthquakes in the past two issues ... " (October 25, 2018) as:

 

and

 

"A strong earthquake and aftershocks (M 6.7, 6.0) was felt widely in the region  of southern Greece today with maximum intensity V. This earthquake with an  epicenter SSW of Kalamata, Greece was felt with intensity V at Kalamata and

Pirgos, Greece. NEIC reported intensity IV in Greece at Ilion, ayioi Theodoroi,

Voula, Tripoli, Amarousion, Arkhaia Epidauros, Galatos,  Iraklion, Kato Akhaia,

Khora, Megara, Moskhaton, Nea Smirni, Palaion Faliron, Patrai, Piraieus.  Intensity III was felt within about 200 km of the epicenter and intensity II  within about 300 km of the epicenter. The earthquake was felt as far away as  Malta in Sliema, San Swann, Xghajra, Valletta, Birkirkara and Birzebugia and in  Italy at Catania more than 600 km from the epicenter. In Egypt the quake was  felt with intensity III at al-Iskandariyah more than 900 km away. Associated  Press also reported the quake was felt in Cairo, Egypt and the southern Italian  regions of Pulia and Calabria. People fled their homes and offices and schools were evacuated by only minor damage was reported to buildings. No victims were  reported. The depth and location off the coast of this epicenter may have helped  mitigate the damage. The M 6.0-6.4 aftershock two hours after the mainshock was  reported with intensity VIII at Vlakhiotis, Greece; intensity V in Greece at

Yithion, Neapoli Voion, Kissamos and Ilioupoli and with intensity IV at Nea

Ionia, Oatrai, Pilos, Piraieus and Sparti, Greece. This aftershock was also  reported felt in Malta and Italy. An aftershock of M 4.6 was reported felt with  intensity II in Greece at Athinai and Rafina. The last major earthquake to kill

people in Greece killed more than 100 in September, 1999." (February 14, 2008)  

 

Forecasts 161622 had expected today's event in Greece within about 50 km of this epicenter was likely in late March. This epicenter is located at 145 degrees from the M 6.7 in the Macquarie Island of March 3, 2024 and may have been promoted by energy from that source. A series of minor earthquakes in Connecticut today including those of M 2.1, 1.6, 1.8 also occurred at this distance from Macquarie Island and may have been promoted by similar energies." (March 29, 2024)

 

Like the events in the North Atlantic today this activity is at 146 degrees from the M 7.1 in the Loyalty Islands of December 7, 2023 and may have been promoted by energy from that source.

 

O: 29MAR2024 07:11:52  37.2N   21.2E mb=4.1  EMSC   SOUTHERN GREECE

O: 29MAR2024 07:12:47  37.3N   21.3E mw=5.8  ANSS   NW of Filiatr├í Greece

O: 29MAR2024 07:12:49  37.3N   21.3E MW=5.9  EMSC   SOUTHERN GREECE              

P: 24MAR2024 161622    37.0N   21.0E 3.0-4.8 BAAAA  No. Greece                 

P: 27MAR2024 161622    39.0N   20.0E 3.0-4.6 ABAAA  No. Greece                 

 

O: 28MAR2024 12:20:23  41.4N   72.0W ml=1.8  ANSS   ESE of Ledyard Connecticut

O: 28MAR2024 12:12:04  41.4N   72.0W ml=1.6  ANSS   Old Mystic Connecticut

O: 28MAR2024 12:03:55  41.4N   72.0W ml=2.1  ANSS   Old Mystic Connecticut

O: 28MAR2024 12:03:55  41.4N   72.0W ML=2.1  EMSC   SOUTHERN NEW ENGLAND         

P: 22MAR2024 161676    41.0N   71.0W 2.0-4.1 CAAAA  New England                

 

 

The earthquake in Greece was followed today by an M 4.8 in Eastern Turkey. EMSC reported this earthquake of M 4.6 in Eastern Turkey was felt with intensity up to III in the area(s) of  Eastern Turkey in Akcakiraz, Elazig, Olgunlar, Safran, Sursuru, Universite, Yakacik, Sanayi, Fikripasa, Peyas, Bagcilar, Mevlana Halit, Kelesabdioglu, Karakopru and as far as 300 km from the epicenter in Syria. 

The last earthquake in eastern Turkey within about 150 km of this epicenter with M>=4.8 occurred on  January 25, 2024 with M 5.0. Forecast 161654 had expected enhanced seismicity within about 100 km of today's epicenter was likely at the end of March.

 

O: 30MAR2024 00:25:07  38.5N   39.4E MW=4.8  EMSC   EASTERN TURKEY               

P: 24MAR2024 161654    39.0N   40.0E 3.5-5.2 CAAAA  Turkey                     

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 29MAR2024 11:11:19  22.8N  121.3E ML=4.0  EMSC   TAIWAN REGION                

O: 29MAR2024 11:11:19  22.8N  121.3E ML=4.0  CWB    TAIWAN REGION                

P: 26MAR2024 161595    23.0N  122.0E 4.0-5.4 BAAAA  Taiwan                      

 

CWB reported this earthquake was felt with intensity III in Taitung and II in Hualien Counties, Taiwan.

 

O: 29MAR2024 19:26:18  32.6N   88.9E MB=4.7  EMSC   WESTERN XIZANG               

P: 26MAR2024 161658    30.0N   88.0E 3.8-5.2 BCAAA  Xizang                      

P: 26MAR2024 161658    35.0N   90.0E 3.8-5.2 BCAAA  Xizang                     

 

O: 29MAR2024 22:10:13  30.8N   49.9E MB=4.2  EMSC   WESTERN IRAN                 

P: 28MAR2024 161593    29.0N   53.0E 3.5-4.9 ABCAA  So. Iran/Persian Gulf      

 

NEIC reported this earthquake of M 4.0 in Iran was felt with intensity up to V in the area(s) of  Iran in Aghajari.

 

No significant (M>=5) or unusual earthquakes were reported in Asia today.

 

INDONESIA AND PHILIPPINES

 

O: 29MAR2024 23:56:33   1.0S  128.6E ML=4.4  EMSC   HALMAHERA, INDONESIA         

P: 28MAR2024 161534     1.0S  127.0E 4.0-5.7 AABAA  Ceram area                 

 

BMG reported this earthquake of M 5.2 in Halmahera, Indonesia was felt with intensity up to II in the area(s) of  Halmahera, Indonesia in Loloda, Ibu Seltan, Galela, Loloda, and in Ternate at Pulau Batang Dua. 

 

O: 30MAR2024 01:13:15   2.4N  126.8E mb=4.7  EMSC   MOLUCCA SEA

O: 29MAR2024 18:06:55   2.1N  127.0E MB=5.1  EMSC   MOLUCCA SEA                  

P: 28MAR2024 161524     2.0N  129.0E 4.0-5.4 AABAA  Halmahera                  

 

O: 29MAR2024 07:38:34   4.5S  143.2E ML=4.4  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 28MAR2024 161545     5.0S  144.0E 4.0-5.4 AAAAA  Papua New Guinea           

 

O: 29MAR2024 09:57:05   4.5S  149.6E MW=5.6  EMSC   BISMARCK SEA                 

P: 22MAR2024 161541     5.0S  150.0E 4.0-5.4 CAAAA  New Ireland                

P: 28MAR2024 161540     3.0S  148.0E 4.0-5.4 ABBAA  New Ireland                

 

O: 29MAR2024 09:37:27  17.0N  147.4E MB=4.6  EMSC   MARIANA ISLANDS REGION       

P: 24MAR2024 161571    17.0N  147.0E 4.0-5.4 BAAAA  No. Marianas               

 

CENTRAL AND SOUTH AMERICA

 

O: 30MAR2024 00:39:18   5.8S   78.7W ML=4.0  EMSC   NORTHERN PERU                

P: 29MAR2024 161535     4.0S   80.0W 4.0-5.6 ABBAA  Ecuador                    

 

O: 29MAR2024 14:53:34  11.7N   88.8W ML=4.2  EMSC   OFF COAST OF CENTRAL AMERICA 

P: 22MAR2024 161570    12.0N   88.0W 3.5-5.5 CAAAA  Nicaragua                  

 

O: 30MAR2024 00:16:32  17.0N   95.8W ML=4.0  EMSC   OAXACA, MEXICO               

P: 28MAR2024 161557    17.0N   94.0W 3.5-5.5 AABAA  Chiapas, Mexico            

 

O: 30MAR2024 03:18:50  18.5N  101.4W ML=4.1  EMSC   MICHOACAN, MEXICO            

P: 26MAR2024 161567    19.0N  101.0W 3.5-5.3 BAAAA  Michoacan, Mexico          

 

O: 29MAR2024 20:15:37  18.8N   65.2W MD=3.4  EMSC   PUERTO RICO REGION

O: 29MAR2024 19:27:34  18.8N   65.3W MD=3.2  EMSC   PUERTO RICO REGION           

P: 22MAR2024 161579    20.0N   65.0W 3.0-4.7 CBAAA  Bahamas/No. Caribbean      

 

O: 30MAR2024 04:33:31  19.4N   68.3W MD=3.8  EMSC   DOMINICAN REPUBLIC REGION    

P: 26MAR2024 161576    18.0N   68.0W 3.4-5.2 BBAAA  Puerto Rico                

 

O: 30MAR2024 00:49:04  22.6S   66.3W MB=4.4  EMSC   JUJUY, ARGENTINA             

P: 24MAR2024 161749    23.0S   66.0W 4.0-5.4 CAAAA  Argentina                  

 

O: 29MAR2024 08:52:12  22.9N   99.4W ML=3.8  EMSC   TAMAULIPAS, MEXICO           

P: 29MAR2024 161575    19.0N   99.0W 3.5-5.1 ACAAA  Oaxaca, Mexico             

 

O: 30MAR2024 03:54:10  24.9S   68.5W MB=4.5  EMSC   ANTOFAGASTA, CHILE           

P: 28MAR2024 161751    23.0S   69.0W 4.0-5.6 ABAAA  Coast No. Chile            

 

O: 29MAR2024 15:06:17  27.7N  112.1W ML=4.0  EMSC   GULF OF CALIFORNIA

O: 29MAR2024 19:24:34  26.3N  110.6W ML=4.0  EMSC   GULF OF CALIFORNIA           

O: 29MAR2024 10:09:09  27.6N  112.0W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 26MAR2024 161583    28.0N  111.0W 3.5-5.1 BAAAA  Gulf of California         

 

O: 29MAR2024 19:39:21  41.8S   74.0W ML=4.1  EMSC   OFFSHORE LOS LAGOS, CHILE    

P: 22MAR2024 161765    39.0S   73.0W 4.0-5.5 CCAAA  Central Chile              

 

AFRICA AND EUROPE

 

O: 29MAR2024 10:37:12  35.8N   25.5E ML=3.6  EMSC   CRETE, GREECE                

P: 26MAR2024 161611    34.0N   26.0E 3.0-4.6 BBAAA  Crete                      

 

O: 29MAR2024 09:14:59  36.6N   11.1E MB=4.4  EMSC   TUNISIA                      

P: 24MAR2024 161616    38.0N   14.0E 3.0-4.6 BBBAA  Mediterranean/Sicily       

 

EMSC reported this earthquake of M 4.4 in Tunisia was felt with intensity up to III in the area(s) of  Tunisia in Dar Noureddine, Ben Arous, Tunis. 

 

O: 29MAR2024 07:12:49  37.3N   21.3E MW=5.9  EMSC   SOUTHERN GREECE              

P: 27MAR2024 161622    39.0N   20.0E 3.0-4.6 ABAAA  No. Greece                 

 

O: 29MAR2024 20:06:19  38.1N   36.9E MW=3.8  EMSC   CENTRAL TURKEY               

P: 24MAR2024 161652    38.0N   36.0E 3.5-5.2 BAAAA  Turkey                     

 

O: 29MAR2024 07:16:41  41.7N   24.4E ML=3.2  EMSC   BULGARIA                     

P: 27MAR2024 161597    39.0N   26.0E 3.0-4.4 ACAAA  Aegean Sea                 

 

O: 30MAR2024 00:25:07  38.5N   39.4E MW=4.8  EMSC   EASTERN TURKEY               

P: 24MAR2024 161654    39.0N   40.0E 3.5-5.2 CAAAA  Turkey                     

 

O: 29MAR2024 07:11:52  37.2N   21.2E mb=4.1  EMSC   SOUTHERN GREECE

 

SOUTHWEST PACIFIC

 

O: 29MAR2024 21:02:16  20.6S  178.4W MB=4.4  EMSC   FIJI REGION                  

P: 26MAR2024 161759    20.0S  178.0W 4.0-6.0 BAAAA  Tonga Islands              

 

O: 29MAR2024 21:12:14  24.8S  175.0W MB=5.0  EMSC   SOUTH OF TONGA               

P: 29MAR2024 161760    25.0S  177.0W 4.0-5.5 AABAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 29MAR2024 09:31:17   4.1S  104.0W MB=4.6  EMSC   CENTRAL EAST PACIFIC RISE    

P: 27MAR2024 161542     5.0S  105.0W 4.0-5.4 AAAAA  No. East Pacific Rise      

 

O: 29MAR2024 16:20:57  12.8N   44.8W mb=4.9  EMSC   NORTHERN MID-ATLANTIC RIDGE

O: 29MAR2024 17:58:36  12.8N   44.9W Mw=5.2  EMSC   NORTHERN MID-ATLANTIC RIDGE

O: 29MAR2024 16:47:59  12.9N   45.1W mb=4.7  EMSC   NORTHERN MID-ATLANTIC RIDGE

O: 29MAR2024 16:19:38  12.8N   45.0W MB=5.0  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 27MAR2024 161569    15.0N   45.0W 4.0-5.6 ACAAA  Mid-Atlantic Ridge          

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 29MAR2024 14:41:00  28.0S  178.0W MW=5.4  EMSC   KERMADEC ISLANDS REGION      

P: 26MAR2024 161753    28.0S  177.0W 4.0-5.6 BAAAA  No. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

No earthquakes of M>=4 were located in Japan or the Kuril Islands today.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 29MAR2024 08:20:20  31.4N  115.2W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO

O: 29MAR2024 09:49:29  31.1N  115.8W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO       

P: 28MAR2024 161638    32.4N  115.8W 2.5-4.7 ABAAA  So. California             

 

O: 29MAR2024 06:56:20  38.8N  122.8W MD=2.1  EMSC   NORTHERN CALIFORNIA          

P: 27MAR2024 161606    38.9N  122.8W 2.5-4.7 AAAAA  Central California         

 

O: 29MAR2024 08:43:02  40.3N  124.4W MD=2.2  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 26MAR2024 161682    40.3N  124.7W 2.5-4.5 BAAAA  Off Coast of No. Calif     

 

ALASKA

 

O: 30MAR2024 04:00:45  62.3N  149.1W ML=3.3  EMSC   CENTRAL ALASKA               

O: 30MAR2024 00:42:25  62.4N  151.1W ML=3.1  EMSC   CENTRAL ALASKA               

P: 26MAR2024 161724    63.0N  148.6W 3.2-4.9 BAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.3 in Central Alaska was felt with intensity up to III in the area(s) of  Central Alaska in Susitna North.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 29MAR2024 16:53:48  46.9N  122.0W ML=2.4  EMSC   WASHINGTON                   

P: 25MAR2024 161695    46.9N  122.0W 2.0-4.4 BAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 29MAR2024 10:51:57  31.6N  104.5W ML=2.9  EMSC   WESTERN TEXAS

O: 29MAR2024 22:05:19  31.6N  104.6W ML=2.2  EMSC   WESTERN TEXAS

O: 30MAR2024 03:12:49  31.6N  103.9W ML=2.7  EMSC   WESTERN TEXAS

O: 29MAR2024 09:05:09  31.7N  104.3W ML=2.0  EMSC   WESTERN TEXAS

O: 29MAR2024 21:00:26  31.7N  104.4W ML=2.0  EMSC   WESTERN TEXAS

O: 29MAR2024 22:51:51  31.7N  104.2W ML=2.1  EMSC   WESTERN TEXAS                

P: 27MAR2024 161636    31.4N  104.8W 2.0-4.3 AAAAA  SW U.S.A                    

 

NEIC reported this earthquake of M 2.7 in Western Texas was felt with intensity up to III in the area(s) of  Western Texas in Toyah.

 

EASTERN U.S./CANADA

 

O: 29MAR2024 12:33:23  35.7N   97.4W ML=2.1  EMSC   OKLAHOMA

O: 29MAR2024 21:48:25  35.7N   97.4W ML=2.5  EMSC   OKLAHOMA

O: 30MAR2024 00:22:49  36.3N   98.2W ML=2.3  EMSC   OKLAHOMA                     

P: 27MAR2024 161650    39.0N   99.0W 2.0-4.0 BCAAA  Southern Plains            

 

NEIC reported this earthquake of M 2.5 in Oklahoma was felt with intensity up to IV in the area(s) of  Oklahoma in Arcadia.

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

STRONG EARTHQUAKE SHAKES SOUTHERN GREECE

 

EARTHQUAKE SUMMARY FOR MARCH 28, 2024

 

The strongest earthquake in the world today was an M 5.8-5.9 in Greece. NEIC reported it was felt with intensity up to VII in Filiatra, Greece.

EMSC reported strong shaking in Greece in Filiatra, Kyparissia, Tholo, Spiantza, Epitalio, Pyrgos, Vytineika, Gargalianoi, Dounaiika, Amaliada, Vasilikos, Amaliada, Savalia, Schinolakka, Pylos and as far as 230 km from the epicenter in Athens, Greece among other communities. No major damage was reported. A foreshock a minute before the mainshock was felt with moderate intensity in Greece at Filiatra, Tholo, Epitalio, Schinolakka, Pylos, Dounmaiika, Vasilikos, Amaliada, Pantokratoras, Xifytas and as far as 400 km from the epicenter in Athens and Heraklion. This is the strongest earthquake to occur in southern Greece within about 200 km of today's epicenter since an M 6.8 on October 24, 2018 and a series of event of M 6.7 on February 14, 2008; M 6.1 on February 20, 2008 and June 8, 2008. At the time this summary noted:

 

 

"A series of moderate to strong earthquakes hit the Ionian Sea of Greece today. The strongest of these was an M 6.8 but the series included a number of events of M>=5. As the epicenter occurred under the Ionian Sea about 40 km from the nearest habitation, it was not as damaging as it may have been. NEIC reported maximum intensity VI  in Zakinthos, Greece in Lithakia, Zakinthos, Argostolion, Pirgos Ilia, Makrisia. Intensity V was

reported within about 300 km of the epicenter at Penteli, Attiki, Ambelakia, Aryirades, Kerkira, Sparti Lakonia, Leukas Levkas, Agrinion, Patrai Ahaia, Gargalianoi, Kiparissa, Kardamas, Planos Zakinthos, Mpokhali, Katastarion, Makhairadon, Greece. Other communities within about 350 km of the epicenter also reported light (II-III) to moderate (IV) shaking. The mainshock and most of the larger events occurred within minutes of local

solar midnight. Tidal stresses maximize at this hour and with the full moon yesterday, it is likely that tidal stresses were important in the occurrence

of this activity at this time in the Ionian Sea. This summary had noted tidal stresses which could trigger earthquakes in the past two issues ... " (October 25, 2018) as:

 

and

 

"A strong earthquake and aftershocks (M 6.7, 6.0) was felt widely in the region of southern Greece today with maximum intensity V. This earthquake with an

epicenter SSW of Kalamata, Greece was felt with intensity V at Kalamata and Pirgos, Greece. NEIC reported intensity IV in Greece at Ilion, ayioi Theodoroi, Voula, Tripoli, Amarousion, Arkhaia Epidauros, Galatos,  Iraklion, Kato Akhaia,  Khora, Megara, Moskhaton, Nea Smirni, Palaion Faliron, Patrai, Piraieus. Intensity III was felt within about 200 km of the epicenter and intensity II  within about 300 km of the epicenter. The earthquake was felt as far away as  Malta in Sliema, San Swann, Xghajra, Valletta, Birkirkara and Birzebugia and in  Italy at Catania more than 600 km from the epicenter. In Egypt the quake was felt with intensity III at al-Iskandariyah more than 900 km away. Associated  Press also reported the quake was felt in Cairo, Egypt and the southern Italian  regions of Pulia and Calabria. People fled their homes and offices and schools  were evacuated by only minor damage was reported to buildings. No victims were reported. The depth and location off the coast of this epicenter may have helped  mitigate the damage. The M 6.0-6.4 aftershock two hours after the mainshock was  reported with intensity VIII at Vlakhiotis, Greece; intensity V in Greece at

Yithion, Neapoli Voion, Kissamos and Ilioupoli and with intensity IV at Nea  Ionia, Oatrai, Pilos, Piraieus and Sparti, Greece. This aftershock was also

reported felt in Malta and Italy. An aftershock of M 4.6 was reported felt with intensity II in Greece at Athinai and Rafina. The last major earthquake to kill  people in Greece killed more than 100 in September, 1999." (February 14, 2008)  

 

Forecasts 161622 had expected today's event in Greece within about 50 km of this epicenter was likely in late March. This epicenter is located at 145 degrees from the M 6.7 in the Macquarie Island of March 3, 2024 and may have been promoted by energy from that source. A series of minor earthquakes in Connecticut today including those of M 2.1, 1.6, 1.8 also occurred at this distance from Macquarie Island and may have been promoted by similar energies.

 

O: 29MAR2024 07:11:52  37.2N   21.2E mb=4.1  EMSC   SOUTHERN GREECE

O: 29MAR2024 07:12:47  37.3N   21.3E mw=5.8  ANSS   NW of Filiatr├í Greece

O: 29MAR2024 07:12:49  37.3N   21.3E MW=5.9  EMSC   SOUTHERN GREECE              

P: 24MAR2024 161622    37.0N   21.0E 3.0-4.8 BAAAA  No. Greece                 

P: 27MAR2024 161622    39.0N   20.0E 3.0-4.6 ABAAA  No. Greece                 

 

O: 28MAR2024 12:20:23  41.4N   72.0W ml=1.8  ANSS   ESE of Ledyard Connecticut

O: 28MAR2024 12:12:04  41.4N   72.0W ml=1.6  ANSS   Old Mystic Connecticut

O: 28MAR2024 12:03:55  41.4N   72.0W ml=2.1  ANSS   Old Mystic Connecticut

O: 28MAR2024 12:03:55  41.4N   72.0W ML=2.1  EMSC   SOUTHERN NEW ENGLAND         

P: 22MAR2024 161676    41.0N   71.0W 2.0-4.1 CAAAA  New England                

 

The remarkable series of moderate earthquakes at antipodal locations to Tropical Storms Megan and Neville in the Indian Ocean continued today. These occurred with an M 3.9 in the Gulf of Mexico and an M 4.6 in the northern Mid-Atlantic.

 

The stronger of these was the M 4.8 in the Northern Mid-Atlantic Ocean. This  event is slightly south of the M 5.5 on March 25, 2024. At the time this summary noted in this regard:

 

"The strongest earthquake in the world today was an M 5.5 in the northern mid-Atlantic Ridge area. It was not reported felt in this remote area. The last earthquake of M>=5.5  within about 200 km of this epicenter in the North Atlantic Ridge occurred as an M 6.0 on September 18, 2015 and prior to that an M 6.0 on September 5, 2013. A smaller M 4.6 hit the area to the south of this yesterday. This summary speculated it may have been triggered by antipodal focusing of energy associated with the landfall of Tropical Cyclone Megan  as follows:

 

 

"An earthquake of M 4.6 occurred today in the Northern Mid-Atlantic. It was not felt in this remote epicentral area. It was likely promoted by antipodal energy from Tropical storm Megan which passed over the antipode to this epicenter three days ago and was expected in this summary  at the time as:

 

"TC Megan (19P) continued today in the area North of Australia with winds up to 80 kts.  This system is expected to track to the southwest over the next week and to make landfall today. It could help promote enhanced seismicity the area of New Guinea and northern Australia during this period. It is currently nearly antipodal to the northern mid-Atlantic at 16N 43W where some promoted antipodal seismicity may occur in the next several days." (March 20, 2024)

 

Today's event in the northern Mid-Atlantic Ridge area is the largest reported within about 250 km of this epicenter since an M 4.7 on July 23, 2023 and an M 5.0 on September 27, 2022." (March 25, 2024)

 

The M 4.8 today is about 150 km south of the M 5.5 on March 25 and is the strongest within about 150 km of today's epicenter since an M  5.2 on August 17m 2020. Further seismicity in this area of the Atlantic antipodal to the past of  TC Megan is considered likely in the next several days.

 

Forecast 161569 had expected this event within about 25 km was likely in the Mid-Atlantic Ridge around March 27.

 

O: 28MAR2024 13:21:16  15.2N   45.3W MB=4.8  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 27MAR2024 161569    15.0N   45.0W 4.0-5.6 AAAAA  Mid-Atlantic Ridge         

 

 

An earthquake of M 4.2 also occurred today in the Gulf of Mexico. Tropical Cyclone Neville passed over the antipode of this epicenter in the Gulf of Mexico three days ago in the area of the South Indian Ocean. This had been emphasized in the previous issue of this summary when an unusual earthquake in northern Mexico also followed this pattern as:

 

"The strongest earthquake in the U.S., Canada or vicinity today was an M 3.9 in northern Mexico in the Nuevo Leon region. This is the largest earthquake

within about 150 km of this epicenter since an M 4.0 on March 18, 2014. It is likely that antipodal energy from Tropical Cyclone Neville helped promote

this event. TC Neville passed at the antipode to this event on March 24-25, 2024 at about 21S 86E (compare with the epicenter in the Gulf of Mexico of 21N 94W for antipodality). At the time the expected effects of TC Neville were outlined in this summary as:

 

"TC Neville (18S) continued today in the area North of W. Australia with winds up to 85 kts.  This system is expected to track to the west over the next week. It could help promote enhanced seismicity the area of Sumatra and Java during this period.  It is currently nearly antipodal to the Yucatan, Honduras and Guatemala and could help trigger further antipodal seismicity in this area in the next several days." (March 25, 2024)

 

Today's earthquake is the strongest (at M 4.2) within the Gulf of Mexico within about 200 km of this epicenter since an M 4.3 on September 3, 2013. The only event of significantly larger magnitude in this area in the past 35 years was an M 5.6 on May 23, 2007. At the time this summary noted:

 

 

"An earthquake of M 5.6 hit off the coast of southern Texas and northeast of Tuxpam de Rgz, Mexico in the Gulf of Mexico today. This is a very unusual earthquake and the strongest to occur in this region in more than 15 years. NEIC reported that this earthquake was felt with intensity IV and III at Austin, Texas nearly 1000 km to the west of the epicenter. The quake was also felt with intensity IV in Mexico at Xalapa and Madero and with intensity III at  Altamira, Poza Rica, Progreso, Tampico and Tuxpam in northeastern Mexico along the coast with the Gulf of Mexico. This earthquake was located offshore from the port city of Tampico in the Gulf state of Veracruz, Mexico." (May 23, 2007)

 

Forecast 161575 had expected regional seismic enhancement was likely in the area around March 29, 2024.

 

 

O: 29MAR2024 01:59:09  21.4N   96.0W ML=4.2  EMSC   GULF OF MEXICO               

P: 29MAR2024 161575    19.0N   99.0W 3.5-5.1 ACCAA  Oaxaca, Mexico             

 

The strongest earthquake in the U.S. or Canada today was an M 3.7 in the Unimak Island region of the Aleutians, Alaska. This appears to be an aftershock of an M 4.1 in the Unimak area of March 22, 2024. At the time this summary noted:

 

 

"The strongest earthquake in the U.S. or Canada today was an M 4.1 in the  Unimak Island region of Alaska. This appears to be an aftershock of an M 4.6

which hit six hours earlier in the Unimak Island area." (March 22, 2024)

 

Both today's earthquake and that of March 22 occurred within minutes of local solar midnight and may have been promoted by tidal stresses which  maximize near this hour. 

 

Forecast 161717 had expected today's event in the Unimak Island area was likely within about 100 km around March 29. This activity is located at the fifth node (72 degrees) from recent strong earthquakes in Talaud, New Guinea, Xinjiang and Mindanao, Philippines and may have been promoted by energy from those sources.

 

O: 28MAR2024 11:18:12  53.2N  164.1W ML=3.1  EMSC   UNIMAK ISLAND REGION, ALASKA

O: 28MAR2024 11:13:09  53.3N  164.2W ML=3.7  EMSC   UNIMAK ISLAND REGION, ALASKA 

P: 29MAR2024 161717    54.0N  164.9W 3.5-4.9 AAAAA  Unimak Islands, Aleutians  

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 28MAR2024 23:41:56  36.2N   71.1E mb=4.4  EMSC   HINDU KUSH REGION, AFGHANISTAN

O: 28MAR2024 10:55:12  36.2N   71.2E MB=5.1  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 24MAR2024 161612    37.0N   71.0E 3.8-5.2 BAAAA  Hindu Kush/Pakistan        

 

NEIC reported this earthquake of M 5.1 in Afghanistan was felt with intensity up to III in the area(s) of  Afghanistan in Ashkasham.

EMSC reported weak shaking in Kabul, Afghanistan and in Pakistan at Peshawar, Islamabad, and in Tajikistan at Dushanbe.

 

INDONESIA AND PHILIPPINES

 

O: 28MAR2024 07:49:59   2.2S  128.2E MB=4.6  EMSC   CERAM SEA, INDONESIA         

P: 28MAR2024 161534     1.0S  127.0E 4.0-5.7 ABBAA  Ceram area                 

 

O: 28MAR2024 21:23:01   5.9S  112.5E mb=4.5  EMSC   JAVA SEA

O: 28MAR2024 18:29:35   5.6S  112.5E ML=4.1  EMSC   JAVA SEA                     

P: 25MAR2024 161546     7.0S  106.0E 4.0-5.4 BBCAA  So. of Java                

 

O: 28MAR2024 20:56:21   7.8S  127.6E ML=4.2  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 24MAR2024 161531     7.0S  127.0E 4.0-5.4 BAAAA  Banda Sea                  

 

O: 28MAR2024 08:01:55   9.1S  110.2E MB=4.9  EMSC   SOUTH OF JAVA, INDONESIA     

P: 28MAR2024 161546     9.0S  108.0E 4.0-5.4 AABAA  So. of Java                

 

O: 29MAR2024 02:02:40  17.0N  147.3E Mw=5.1  EMSC   MARIANA ISLANDS REGION

O: 29MAR2024 04:58:55  17.0N  147.3E mb=5.0  EMSC   MARIANA ISLANDS REGION

O: 29MAR2024 04:18:31  17.1N  147.3E mb=4.6  EMSC   MARIANA ISLANDS REGION

O: 29MAR2024 01:54:38  17.0N  147.3E MB=5.0  EMSC   MARIANA ISLANDS REGION       

P: 24MAR2024 161571    17.0N  147.0E 4.0-5.4 BAAAA  No. Marianas               

 

O: 29MAR2024 02:09:59  13.7N  144.6E MB=4.4  EMSC   GUAM REGION                  

P: 23MAR2024 161577    12.0N  144.0E 4.0-5.4 CBAAA  So. Marianas/Guam          

 

 

CENTRAL AND SOUTH AMERICA

 

O: 28MAR2024 20:04:16   8.5S   76.0W ML=4.1  EMSC   CENTRAL PERU

O: 28MAR2024 11:01:17   8.8S   75.5W mb=4.9  EMSC   CENTRAL PERU

O: 28MAR2024 12:49:02   9.0S   75.6W ML=4.0  EMSC   CENTRAL PERU                 

P: 22MAR2024 161532     8.0S   74.0W 3.5-5.1 CABAA  Brazil                     

 

O: 29MAR2024 03:02:30   9.6N   70.0W MB=4.3  EMSC   LARA, VENEZUELA              

O: 28MAR2024 23:23:47   9.7N   69.9W mb=4.9  EMSC   LARA, VENEZUELA

P: 26MAR2024 161530     9.0N   70.0W 4.0-5.6 BAAAA  Venezuela                  

 

NEIC reported this earthquake of M 4.9 in northern Venezuela was felt with intensity up to III in the area(s) of  northern Venezuela in Tocuyo.

 

O: 29MAR2024 06:35:05  14.2N   92.8W ML=4.4  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 26MAR2024 161560    15.0N   92.0W 3.5-5.2 BAAAA  Guatemala                  

 

O: 28MAR2024 12:26:11  14.5N   93.8W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 28MAR2024 22:44:26  14.9N   93.9W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 29MAR2024 03:08:15  14.9N   94.6W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 28MAR2024 161557    17.0N   94.0W 3.5-5.5 ACAAA  Chiapas, Mexico            

 

O: 28MAR2024 08:29:50  15.6N   95.7W ML=3.9  EMSC   OFFSHORE OAXACA, MEXICO

O: 28MAR2024 14:05:47  16.0N   95.8W ML=4.0  EMSC   OAXACA, MEXICO               

P: 24MAR2024 161557    17.0N   95.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

P: 28MAR2024 161557    17.0N   94.0W 3.5-5.5 AABAA  Chiapas, Mexico            

 

O: 28MAR2024 17:47:31  17.7N  101.2W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 26MAR2024 161567    18.0N  102.0W 3.5-5.4 AAAAA  Michoacan, Mexico          

P: 26MAR2024 161567    19.0N  101.0W 3.5-5.3 ABAAA  Michoacan, Mexico          

 

O: 28MAR2024 06:37:17  17.7S   69.2W MB=4.3  EMSC   LA PAZ, BOLIVIA              

P: 25MAR2024 161742    17.0S   69.0W 4.0-5.6 BAAAA  So. Peru/Bolivia            

 

O: 29MAR2024 01:58:57  18.0N   68.0W MD=3.4  EMSC   PUERTO RICO REGION           

P: 26MAR2024 161576    18.0N   68.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 28MAR2024 17:39:18  18.4N   73.6W ML=3.2  EMSC   HAITI REGION                  

P: 24MAR2024 161580    20.0N   73.0W 3.0-4.6 BBAAA  Bahamas/No. Caribbean      

 

O: 29MAR2024 04:19:10  18.9N   70.3W ML=3.3  EMSC   DOMINICAN REPUBLIC

O: 28MAR2024 21:14:42  18.7N   69.3W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 23MAR2024 161576    18.0N   69.0W 3.4-5.1 BAAAA  Puerto Rico                

P: 26MAR2024 161576    18.0N   68.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 29MAR2024 01:59:09  21.4N   96.0W ML=4.2  EMSC   GULF OF MEXICO               

P: 29MAR2024 161575    19.0N   99.0W 3.5-5.1 ACCAA  Oaxaca, Mexico             

 

O: 28MAR2024 20:19:14  24.5N  109.4W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 17MAR2024 161318    24.0N  109.0W 3.5-4.9 DAAAA  Gulf of California         

 

O: 28MAR2024 20:06:00  26.0N  110.6W ML=3.8  EMSC   GULF OF CALIFORNIA           

P: 26MAR2024 161583    28.0N  111.0W 3.5-5.1 BAAAA  Gulf of California         

 

AFRICA AND EUROPE

 

EMSC reported an earthquake of M 3.9 in Bulgaria was felt with intensity up to III in the area(s) of  Bulgaria in Devin, Smolyan, Rakitovo, Stamboliyski, Plovdiv, Echinos, Sofia, and as far as Pernik (151 km).

 

O: 29MAR2024 07:11:52  37.2N   21.2E mb=4.1  EMSC   SOUTHERN GREECE

O: 29MAR2024 07:12:47  37.3N   21.3E mw=5.8  ANSS   NW of Filiatr├í Greece

O: 29MAR2024 07:12:49  37.3N   21.3E MW=5.9  EMSC   SOUTHERN GREECE              

P: 24MAR2024 161622    37.0N   21.0E 3.0-4.8 BAAAA  No. Greece                 

P: 27MAR2024 161622    39.0N   20.0E 3.0-4.6 ABAAA  No. Greece                 

 

 

SOUTHWEST PACIFIC

 

O: 29MAR2024 06:29:33  16.8S  168.0E MB=5.0  EMSC   VANUATU                      

P: 28MAR2024 161748    17.0S  168.0E 4.0-5.4 AAAAA  Vanuatu Islands            

 

OCEAN RIDGES

 

O: 29MAR2024 01:59:09  21.4N   96.0W ML=4.2  EMSC   GULF OF MEXICO               

P: 29MAR2024 161575    19.0N   99.0W 3.5-5.1 ACCAA  Oaxaca, Mexico             

 

O: 28MAR2024 13:21:16  15.2N   45.3W MB=4.8  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 27MAR2024 161569    15.0N   45.0W 4.0-5.6 AAAAA  Mid-Atlantic Ridge         

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 28MAR2024 23:17:27  41.0S  174.6E ML=3.7  EMSC   COOK STRAIT, NEW ZEALAND     

P: 26MAR2024 161775    41.0S  174.0E 3.0-5.1 AAAAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

No earthquakes of M>=4 were located in Japan or the Kuril Islands today.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 28MAR2024 20:47:17  31.0N  116.7W ML=3.3  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 28MAR2024 20:11:48  31.4N  115.2W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO      

P: 28MAR2024 161638    32.4N  115.8W 2.5-4.7 AAAAA  So. California             

 

O: 28MAR2024 11:46:32  33.0N  117.9W ML=2.0  EMSC   GULF OF SANTA CATALINA, CALIF.

P: 27MAR2024 161639    33.0N  117.7W 2.5-4.5 AAAAA  So. California             

 

O: 28MAR2024 21:16:00  33.1N  115.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 28MAR2024 19:39:48  33.1N  115.9W ML=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 30MAR2024 161638    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

 

O: 28MAR2024 12:21:16  36.0N  117.3W ML=2.0  EMSC   CENTRAL CALIFORNIA           

P: 28MAR2024 161599    36.2N  117.9W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 28MAR2024 23:04:02  38.2N  117.8W ML=2.0  EMSC   NEVADA                       

P: 27MAR2024 161600    38.6N  118.6W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 28MAR2024 08:30:28  38.8N  122.8W MD=2.4  EMSC   NORTHERN CALIFORNIA

O: 28MAR2024 23:32:06  38.8N  122.7W MD=2.5  EMSC   NORTHERN CALIFORNIA

O: 29MAR2024 06:56:20  38.8N  122.8W MD=2.1  EMSC   NORTHERN CALIFORNIA

O: 28MAR2024 07:19:25  38.8N  122.8W MD=2.3  EMSC   NORTHERN CALIFORNIA          

P: 27MAR2024 161606    38.9N  122.8W 2.5-4.7 AAAAA  Central California         

 

ALASKA

 

O: 28MAR2024 11:18:12  53.2N  164.1W ML=3.1  EMSC   UNIMAK ISLAND REGION, ALASKA

O: 28MAR2024 11:13:09  53.3N  164.2W ML=3.7  EMSC   UNIMAK ISLAND REGION, ALASKA 

P: 29MAR2024 161717    54.0N  164.9W 3.5-4.9 AAAAA  Unimak Islands, Aleutians  

 

O: 29MAR2024 03:15:53  61.3N  146.9W ML=3.0  EMSC   SOUTHERN ALASKA              

P: 24MAR2024 161720    60.9N  147.4W 3.2-5.0 BAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

No events of M>=2 were located in the northwestern U.S. or western Canada today.

 

ROCKY MOUNTAINS REGION

 

O: 28MAR2024 20:38:28  31.6N  104.2W ML=2.0  EMSC   WESTERN TEXAS

O: 28MAR2024 20:54:40  31.6N  104.0W ML=2.6  EMSC   WESTERN TEXAS

O: 28MAR2024 14:29:33  31.7N  104.1W ML=2.3  EMSC   WESTERN TEXAS

O: 29MAR2024 01:13:11  31.7N  104.4W ML=2.4  EMSC   WESTERN TEXAS

O: 28MAR2024 11:46:55  31.6N  104.0W ML=2.2  EMSC   WESTERN TEXAS                

P: 27MAR2024 161636    31.4N  104.8W 2.0-4.3 AAAAA  SW U.S.A                   

 

O: 29MAR2024 05:40:54  44.3N  116.2W ML=2.7  EMSC   SOUTHERN IDAHO               

P: 27MAR2024 161673    44.5N  116.2W 2.0-3.9 AAAAA  Montana/Idaho              

 

NEIC reported this earthquake of M 2.7 in Southern Idaho was felt with intensity up to III in the area(s) of  Southern Idaho in Smiths Ferry.

 

EASTERN U.S./CANADA

 

O: 28MAR2024 09:42:42  35.0N   84.7W MD=2.0  EMSC   EASTERN TENNESSEE            

P: 27MAR2024 161613    35.9N   82.8W 2.0-4.4 AABAA  Kentucky/Tennessee/NC      

 

O: 28MAR2024 15:07:55  35.7N   97.4W ML=3.0  EMSC   OKLAHOMA                     

P: 27MAR2024 161649    34.0N   97.0W 2.0-4.0 ABAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.1 in Oklahoma was felt with intensity up to III in the area(s) of  Oklahoma in Arcadia.

 

O: 28MAR2024 23:55:12  38.6N   89.5W ML=3.0  EMSC   ILLINOIS                     

O: 28MAR2024 23:55:12  38.6N   89.5W md=2.8  ANSS   NNE of Germantown Illinois

P: 25MAR2024 161621    38.0N   89.0W 2.0-4.4 BAAAA  New Madrid area            

 

NEIC reported this earthquake of M 2.8 in Illinois was felt with intensity up to V in the area(s) of  Illinois in Germantown.

 

O: 27MAR2024 22:18:58  50.4N   67.6W MB=2.6  ECAN OF PORT-CARTIER, QC            

P: 26MAR2024 161671    49.3N   67.5W 2.0-4.1 ABAAA  Maine                       

 

 

O: 28MAR2024 12:20:23  41.4N   72.0W ml=1.8  ANSS   ESE of Ledyard Connecticut

O: 28MAR2024 12:12:04  41.4N   72.0W ml=1.6  ANSS   Old Mystic Connecticut

O: 28MAR2024 12:03:55  41.4N   72.0W ml=2.1  ANSS   Old Mystic Connecticut

O: 28MAR2024 12:03:55  41.4N   72.0W ML=2.1  EMSC   SOUTHERN NEW ENGLAND         

P: 22MAR2024 161676    41.0N   71.0W 2.0-4.1 CAAAA  New England                

 

O: 28MAR2024 09:42:42  35.0N   84.7W md=2.0  ANSS   Wildwood Lake Tennessee

 

HAWAII

 

O: 28MAR2024 19:56:39  20.1N  157.4W ml=3.2  ANSS   Lanai City Hawaii

O: 28MAR2024 19:56:39  20.1N  157.4W MD=3.2  EMSC   OAHU REGION, HAWAII          

P: 26MAR2024 161584    20.4N  155.1W 4.0-5.5 AABAA  Hawaii area                

 

NEIC reported this earthquake of M 3.2 in Oahu, Hawaii was felt with intensity up to III in the area(s) of  Mauai, Hawaii in Lanai City.

 

 

MODERATE QUAKE SHAKES NORTHERN ITALY

 

EARTHQUAKE SUMMARY FOR MARCH 27, 2024

 

 

An unusual M 4.4-4.5 earthquake occurred today in the region of northern Italy. NEIC reported it was felt with intensity V in Preone, Italy. EMSC reported it was felt with moderate to strong intensity in Italy at Ovaro, Meduno, Travesio, Bordano, Gemona del Friuli, Paluzza, Majano, Maniago, San Daniele del Griuli, Montereale Valcellina, and as far as Croatia, Austria, and Czechia among others.  

The last earthquake of M>=4.5 within about 150 km of today's epicenter occurred as an M 4.5 on June 9, 2012. At the time this summary noted in this regard:

 

 

"A new epicenter in northern Italy saw a moderate earthquake today. This event

of M 4.5 was felt with the following intensities in Italy in Friuli-Venezia Giulia at Aviano (4), Budoia (5), Cordenons (4), Fontanafredda (3), Maniago (4), Pordenone (4), Roveredoin Piano (3), Sacile (3), San Giorgiodella Richinvelda (3), San Quirino (4), and  Udine (2); in Lombardei Gardone at Val Trompia (3), in  Veneto at Belluno (3), Farra d'Alpago (2), Noventa Vicentina (2), Oderzo (2), Ormelle (3), San Dona di Piave (3), Treviso (2), Venice (2), Verona (2). It was also felt in Slovenia in Gorenjska at Bled (2), and in  Goriska at Tolmin (3). EMSC reported light shaking in Innsbruck, Austria with intensity II and at Ljubljana, Slovenia. EMSC also reported moderate shaking in Sacile, Fontanafredda, San Michele al Tagliamento, Treviso, Marcon, Venice, Pardova, Verona, and Aviano, Italy. The only earthquake of similar or larger magnitude within 100 km of this epicenter in the past 22 years was an M 4.8 on April 20, 1994." (June 9, 2012)

 

Forecast 161660 had expected today's event in northern Italy within about 50 km was likely around March 27, 2024. This epicenter is located at the third node (120 degrees) from the M 6.9 in New Guinea of March 23, 2024 and at 102 degrees from the M 6.8 in Talaud of January 8, 2024 and was likely promoted by energy from those sources.

 

O: 27MAR2024 21:19:37  46.4N   12.9E MB=4.5  EMSC   NORTHERN ITALY               

P: 27MAR2024 161660    46.0N   13.0E 3.0-5.1 AAAAA  Austria                    

 

The strongest earthquake in the U.S., Canada or vicinity today was an M 3.9 in northern Mexico in the Nuevo Leon region. This is the largest earthquake within about 150 km of this epicenter since an M  4.0 on March 18, 2014. It is likely that antipodal energy from Tropical Cyclone Neville helped promote this event. TC Neville passed at the antipode to this event on March 26-27, 2024 at about 25S 82E (compare with the epicenter in Mexico of 26N 99W for antipodality). At the time the expected effects of TC Neville were outlined in this summary as:

 

"TC Neville (18S) continued today in the area North of W. Australia with winds up to 85 kts.  This system is expected to track to the west over the next week. It could help promote enhanced seismicity the area of Sumatra and Java during this period.  It is currently nearly antipodal to the Yucatan, Honduras and Guatemala and could help trigger further antipodal seismicity in this area in the next several days." (March 25, 2024)

 

Forecast 161589 had expected enhanced seismicity north of this in late March.

 

O: 27MAR2024 19:12:21  26.1N   99.9W ML=3.9  EMSC   NUEVO LEON, MEXICO           

P: 29MAR2024 161589    28.0N   97.0W 3.0-4.4 ABBAA  Northern Mexico            

 

The strongest earthquake in the world today was an M 5.4 in the southern

Vanuatu region. This is an aftershock of the M 6.7 which shook that area on March 27, 2024 as described in the previous issue of this summary as:

 

"The strongest earthquake in the world today was an M 6.7 in the area of the Loyalty Islands south of Vanuatu. This is the strongest earthquake within about 200 km  of this epicenter since an M 7.1 on May 20, 2023 - an aftershock of an M 7.7 on May 19, 2023.

 

...

 

Today's event in Vanuatu occurred within minutes of local solar noon and may have been promoted by strong tidal stresses associated with the full moon of March 25 (see below) and/or by geomagnetic stresses associated with the  severe geomagnetic storm of the past several days. Vanuatu is located near the geomagnetic equator and often sees enhanced seismicity with major geomagnetic storms." (March 27, 2024)

 

Today's aftershock occurred near local solar midnight and may have been promoted by strong tidal stresses which maximize near this hour.

 

Forecasts 161752 and 161861 had expected today's event was likely within about 200 km of today's epicenter was likely around March 26-29.

 

O: 27MAR2024 13:49:18  20.7S  173.9E MW=5.4  EMSC   VANUATU REGION               

P: 29MAR2024 161761    21.0S  176.0E 4.0-5.6 AABAA  Tonga/Fiji                 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 27MAR2024 10:36:34  31.9N  101.5E MB=4.6  EMSC   WESTERN SICHUAN, CHINA       

P: 30MAR2024 161588    26.0N  101.0E 4.0-5.5 BCAAA  Myanmar                    

 

O: 28MAR2024 00:40:56  32.5N   82.9E MB=4.4  EMSC   WESTERN XIZANG               

P: 23MAR2024 161657    30.0N   82.0E 3.8-5.7 BCAAA  Xizang                     

 

O: 27MAR2024 11:39:22  36.6N   67.9E MB=4.3  EMSC   CENTRAL AFGHANISTAN          

P: 22MAR2024 161612    36.0N   69.0E 3.8-5.2 BAAAA  Hindu Kush/Pakistan        

 

NEIC reported this earthquake of M 4.3 in Afghanistan was felt with intensity up to III in the area(s) of  Afghanistan in Khulm.

 

O: 27MAR2024 12:26:07  56.2N  162.9E mb=4.5  EMSC   NEAR EAST COAST OF KAMCHATKA

 

INDONESIA AND PHILIPPINES

 

O: 28MAR2024 05:08:17   1.7N   97.4E ML=4.2  EMSC   NIAS REGION, INDONESIA       

P: 27MAR2024 161526     2.0N   97.0E 4.0-5.6 AAAAA  Nicobar Islands            

 

O: 27MAR2024 08:10:12   2.0S  136.7E ML=4.0  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 24MAR2024 161551     2.0S  134.0E 4.0-5.5 BACAA  West Irian, PNG            

 

O: 27MAR2024 17:35:46   3.9N  127.0E MB=4.6  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 25MAR2024 161525     5.0N  126.0E 4.0-5.5 ABAAA  Halmahera                  

 

O: 27MAR2024 18:07:03   5.4N   93.9E ML=4.3  EMSC   OFF W COAST OF NORTHERN      

P: 23MAR2024 161527     7.0N   92.0E 4.0-5.8 BBBAA  Nicobar Islands             

 

O: 27MAR2024 22:22:59   5.7S  153.3E MB=4.7  EMSC   NEW IRELAND REGION, P.N.G.   

P: 28MAR2024 161539     6.0S  153.0E 4.0-5.6 AAAAA  New Britain                

 

O: 27MAR2024 12:51:52   6.9S  129.8E ML=4.3  EMSC   BANDA SEA                    

P: 25MAR2024 161531     6.0S  129.0E 4.0-5.4 AAAAA  Banda Sea                  

 

O: 27MAR2024 18:16:53   9.4S  123.6E ML=4.0  EMSC   TIMOR REGION, INDONESIA      

P: 24MAR2024 161536     8.0S  123.0E 4.0-5.6 BBAAA  Flores Island area         

 

 

BMG  reported an earthquake of M 5.1 South of Java, Indonesia  was felt with intensity up to II in the area(s) of  South of Java, Indonesia iin Kab Wonogiri at Pracimantoro, Giritontro, Baturetno, Eeomoko, Paranggupito; in Kulon Progo at Galur; Bantul at Srandakan, Sanden, Kretek, Pundong; Gunungkidul at Playen, Paliyan, Panggang, Tepus, Semanu, Rongkop, Gisisubo, Purworsi; in Paritan at Pringkulu, Punung; Ponorogo at Balong, Pasuruan and Bonjonegoro at Purwosari, Indonesia.

 

CENTRAL AND SOUTH AMERICA

 

O: 28MAR2024 02:17:15   3.8N   82.6W MB=4.5  EMSC   SOUTH OF PANAMA              

P: 23MAR2024 161523     4.0N   83.0W 4.0-6.0 BAAAA  Ecuador                    

 

O: 27MAR2024 11:29:30   7.1S   74.3W mb=4.4  EMSC   NORTHERN PERU

O: 28MAR2024 04:05:15   7.9S   74.4W Mw=5.2  EMSC   NORTHERN PERU

O: 27MAR2024 14:16:14   8.8S   72.9W MB=5.0  EMSC   ACRE, BRAZIL                 

O: 27MAR2024 20:16:15   8.9S   74.8W ML=4.1  EMSC   CENTRAL PERU                 

P: 22MAR2024 161532     8.0S   74.0W 3.5-5.1 BAAAA  Brazil                      

 

NEIC reported this earthquake of M 5.1 in Northern Peru was felt with intensity up to III in the area(s) of  Northern Peru in Pucallpa.

EMSC reported moderate shaking in Los Olivos, Peru.

 

O: 27MAR2024 21:02:24  16.1N   91.3W ML=4.3  EMSC   CHIAPAS, MEXICO              

P: 26MAR2024 161560    15.0N   92.0W 3.5-5.2 ABAAA  Guatemala                  

 

O: 27MAR2024 09:41:19  17.2N   94.3W ML=4.1  EMSC   VERACRUZ, MEXICO             

P: 28MAR2024 161557    17.0N   94.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

 

O: 27MAR2024 15:46:14  17.3N   61.6W MD=3.5  EMSC   ANTIGUA AND BARBUDA REGION   

P: 26MAR2024 161562    17.0N   61.0W 3.0-5.3 AAAAA  Leeward Islands            

 

O: 27MAR2024 14:31:53  17.3N  101.3W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 26MAR2024 161567    18.0N  102.0W 3.5-5.4 AAAAA  Michoacan, Mexico          

 

O: 27MAR2024 17:13:57  17.9N   72.6W ML=3.1  EMSC   HAITI REGION                 

P: 24MAR2024 161580    20.0N   73.0W 3.0-4.6 BCAAA  Bahamas/No. Caribbean      

 

O: 27MAR2024 14:49:47  18.6N  104.7W ML=4.1  EMSC   OFFSHORE COLIMA, MEXICO      

P: 28MAR2024 161568    18.0N  104.0W 3.5-5.1 AAAAA  Michoacan, Mexico          

 

O: 27MAR2024 15:29:39  24.4S   69.6W ML=4.0  EMSC   ANTOFAGASTA, CHILE            

P: 28MAR2024 161751    23.0S   69.0W 4.0-5.6 ABAAA  Coast No. Chile            

 

O: 27MAR2024 19:12:21  26.1N   99.9W ML=3.9  EMSC   NUEVO LEON, MEXICO           

P: 29MAR2024 161589    28.0N   97.0W 3.0-4.4 ABBAA  Northern Mexico            

 

O: 27MAR2024 10:54:45  31.7S   67.1W MB=4.6  EMSC   SAN JUAN, ARGENTINA          

P: 27MAR2024 161763    32.0S   68.0W 4.0-5.8 AAAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O: 27MAR2024 21:19:37  46.4N   12.9E MB=4.5  EMSC   NORTHERN ITALY                

P: 27MAR2024 161660    46.0N   13.0E 3.0-5.1 AAAAA  Austria                    

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

O: 28MAR2024 06:25:22  18.5S  175.5W MB=4.4  EMSC   TONGA                         

P: 26MAR2024 161746    19.0S  176.0W 4.0-5.5 AAAAA  Tonga Islands              

 

O: 27MAR2024 13:49:18  20.7S  173.9E MW=5.4  EMSC   VANUATU REGION               

P: 29MAR2024 161761    21.0S  176.0E 4.0-5.6 AABAA  Tonga/Fiji                  

 

O: 27MAR2024 22:49:51  24.4S  179.6W MB=5.0  EMSC   SOUTH OF FIJI ISLANDS        

P: 23MAR2024 161760    24.0S  180.0W 4.0-5.6 BAAAA  Tonga Islands              

 

OCEAN RIDGES

 

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 27MAR2024 21:07:32  45.2S  167.9E ML=3.8  EMSC   SOUTH ISLAND OF NEW ZEALAND

O: 27MAR2024 15:58:33  44.4S  168.1E ML=3.7  EMSC   SOUTH ISLAND OF NEW ZEALAND  

O: 27MAR2024 15:58:33  44.3S  168.0E MS=4.0  GEONET South Island, New Zealand

P: 22MAR2024 161777    44.0S  168.0E 3.0-4.9 BAAAA  So. Island, N.Z.           

P: 26MAR2024 161777    45.0S  167.0E 3.0-4.9 AAAAA  So. Island, N.Z.           

 

GEONET reported this earthquake was felt with weak intensity in the area southwest of Haast, South Island. 1 report of felt intensity came from the area east and north of the epicenter including 1 with weak intensity; 0 light; 0 moderate; 0 strong; 0 severe and 0 extreme.

 

JAPAN AND KURIL ISLANDS

 

O: 27MAR2024 12:03:17  56.1N  163.0E MB=4.0  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 25MAR2024 161707    56.0N  164.0E 4.0-5.6 AAAAA  Komandorsky Isl            

 

O: 27MAR2024 14:13:49  34.0N  137.2E MB=4.2  EMSC   NEAR S. COAST OF HONSHU,     

P: 26MAR2024 161608    33.0N  138.0E 3.5-4.9 AAAAA  Central/So. Honshu Japan   

 

O: 27MAR2024 09:12:15  44.2N  148.7E MB=4.6  EMSC   KURIL ISLANDS                

P: 25MAR2024 161667    43.0N  148.0E 3.5-5.4 ABAAA  Hokkaido, Japan            

 

O: 27MAR2024 07:19:55  47.4N  153.2E MB=4.1  EMSC   KURIL ISLANDS                

P: 23MAR2024 161692    47.0N  153.0E 3.5-5.4 BAAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 27MAR2024 22:25:48  35.9N  115.0W ML=2.2  EMSC   NEVADA                       

P: 27MAR2024 161601    38.7N  115.4W 2.5-4.5 ACAAA  California/Nevada area     

 

O: 27MAR2024 20:03:37  30.8N  114.3W ML=3.5  EMSC   GULF OF CALIFORNIA           

P: 27MAR2024 161633    30.2N  114.1W 2.0-3.9 AAAAA  SW U.S.A                   

 

O: 27MAR2024 17:34:22  40.4N  124.9W ML=2.9  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 26MAR2024 161682    40.3N  124.7W 2.5-4.5 AAAAA  Off Coast of No. Calif     

 

ALASKA

 

O: 27MAR2024 17:00:42  56.5N  135.1W ML=3.1  EMSC   SOUTHEASTERN ALASKA          

P: 28MAR2024 161703    55.0N  135.0W 3.0-5.1 ABAAA  British Colombia           

 

NEIC reported this earthquake of M 3.1 in Southeastern Alaska was felt with intensity up to III in the area(s) of  Southeastern Alaska in Port Alexander.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 27MAR2024 08:40:36  42.9N  125.0W ML=2.1  EMSC   OFFSHORE OREGON              

P: 22MAR2024 161682    42.5N  126.8W 3.0-5.1 BABAA  Off Coast of Oregon        

 

O: 27MAR2024 11:48:28  49.2N  129.4W MB=3.2  ECAN OF PORT HARDY, BC               

P: 23MAR2024 161694    48.7N  129.0W 2.8-5.1 BAAAA  Vancouver Island area      

 

O: 26MAR2024 19:48:47  50.8N  130.5W MB=3.6  ECAN OF HOLBERG, BC                 

P: 25MAR2024 161702    50.7N  130.5W 3.0-5.2 AAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 27MAR2024 20:20:43  31.7N  101.7W ML=2.6  EMSC   WESTERN TEXAS                

O: 27MAR2024 11:30:29  32.1N  102.7W ML=2.4  EMSC   WESTERN TEXAS                

P: 24MAR2024 161635    32.4N  101.5W 2.0-4.3 BAAAA  SW U.S.A                    

P: 24MAR2024 161636    31.4N  103.8W 2.0-4.3 BAAAA  SW U.S.A                   

 

 

NEIC reported this earthquake of M 2.5 in Western Texas was felt with intensity up to III in the area(s) of  Western Texasi n Garden City.

 

EASTERN U.S./CANADA

 

O: 27MAR2024 07:46:27  36.2N   96.5W ML=2.0  EMSC   OKLAHOMA                     

P: 25MAR2024 161649    35.0N   96.0W 2.0-4.1 ABAAA  Southern Plains            

 

O: 28MAR2024 00:56:55  43.6N   71.4W ML=2.2  EMSC   NEW HAMPSHIRE                

P: 24MAR2024 161678    44.5N   73.7W 2.0-4.2 BABAA  New York State             

 

NEIC reported this earthquake of M 2.2 in New Hampshire was felt with intensity up to III in the area(s) of  New Hampshirein Gilford and Sanbornton. A loud booming sound accompanied the shaking.

 

O: 24MAR2024 15:59:50  75.8N  105.1W MB=3.3  ECAN OF RESOLUTE, NU                

P: 26MAR2024 161733    76.0N  107.0W 4.0-5.6 AAAAA  Arctic Ocean Region        

 

O: 26MAR2024 15:28:35  47.6N   70.0W MB=0.7  ECAN OF KAMOURASKA, QC   

O: 25MAR2024 09:43:15  47.5N   70.0W MB=1.6  ECAN OF LA POCATI├¿RE, QC  

O: 24MAR2024 20:31:24  47.6N   70.2W MB=0.7  ECAN OF LA MALBAIE, QC  

O: 24MAR2024 03:02:58  47.7N   70.0W MB=0.8  ECAN OF LA MALBAIE, QC  

O: 26MAR2024 19:19:43  47.7N   70.2W MB=0.8  ECAN OF LA MALBAIE, QC              

P: 25MAR2024 161671    47.0N   69.0W 2.0-4.0 AAAAA  Maine                      

 

O: 26MAR2024 05:51:57  49.2N   67.0W MB=1.1  ECAN OF LES M├⌐CHINS, QC            

P: 26MAR2024 161671    49.3N   67.5W 2.0-4.1 AAAAA  Maine                       

 

O: 25MAR2024 22:48:52  49.4N   93.0W MB=1.3  ECAN OF EAGLE LAKE, ON              

 

O: 24MAR2024 02:41:24  50.3N   63.3W MB=1.0  ECAN OF HAVRE-SAINT-PIERRE, QC      

P: 26MAR2024 161671    49.3N   67.5W 2.0-4.1 AACAA  Maine                       

 

O: 24MAR2024 02:10:25  72.7N   77.4W MB=1.8  ECAN OF POND INLET, NU  

O: 26MAR2024 09:23:08  72.0N   75.0W MB=2.1  ECAN OF POND INLET, NU  

O: 24MAR2024 12:05:41  71.2N   72.8W MB=2.2  ECAN OF CLYDE RIVER, NU  

O: 24MAR2024 02:24:02  71.9N   75.3W MB=2.2  ECAN OF POND INLET, NU              

P: 25MAR2024 161730    73.3N   73.5W 2.5-4.1 ABAAA  Baffin/Davis Strait Canada 

P: 27MAR2024 161730    71.0N   75.0W 2.5-4.1 AAAAA  Baffin/Davis Strait Canada 

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

STRONG QUAKES IN VANUATU AND OFF COAST OF OREGON

 

EARTHQUAKE SUMMARY FOR MARCH 26, 2024

 

 

The strongest earthquake in the world today was an M 6.7 in the area of the Loyalty Islands south of Vanuatu. This is the strongest earthquake within about 200 km of this epicenter since an M 7.1 on May 20, 2023 - an aftershock of an M 7.7 on May 19, 2023. At the time this summary noted:

 

 

"A major to great earthquake occurred today in the region of New Caledonia and the Loyalty Islands. NEIC reported this earthquake was felt with intensity II-III in New Caledonia at We Iles, Noumea, Paita, Norfold Island, Suva, Fiji and Sydney, New South Wasles, Australia. This earthquake occurred at the peak of an M2.3 solar flare but was probably triggered by an M8.0 flare which maximized within a couple of minutes of local solar noon at the epicenter an hour earlier. Solar Flare Effects (SFE) on seismicity is most prominent at local solar noon when the epicenter is directly beneath the sun. The second flare appears to have triggered the actual earthquake  of M 7.7." (May 19, 2023)

 

Today's event in Vanuatu occurred within minutes of local solar noon and may have been promoted by strong tidal stresses associated with the full moon of March 25 (see below) and/or by geomagnetic stresses associated with the  severe geomagnetic storm of the past several days. Vanuatu is located near the geomagnetic equator and often sees enhanced seismicity with major geomagnetic storms.

 

Forecast 161752 had expected today's event was likely within about 200 km of today's epicenter was likely around March 26.

 

O: 27MAR2024 01:28:20  21.0S  173.7E MW=6.7  EMSC   VANUATU REGION               

P: 26MAR2024 161752    22.0S  172.0E 4.0-5.7 AABAA  Loyalty Islands            

 

A regional foreshock of M 5.4 occurred in Tonga about 1000 km to the east of the M 6.7 earlier in the day. This event occurred near local solar midnight and may also have been promoted by strong tidal stresses. Forecast 161759 had expected this event within about 100 km was likely around March 28, 2024.

 

O: 26MAR2024 09:37:14  20.7S  174.0W MW=5.4  EMSC   TONGA                        

P: 28MAR2024 161759    20.0S  175.0W 4.0-5.7 AAAAA  Tonga Islands              

 

The strongest earthquake in the U.S. or Canada today was an M 5.7 off the coast of  Oregon. NEIC reported it was felt with intensity up to III along the coast of Oregon, especially in the Port Orford area. EMSC reported light shaking in Springfield, Oregon. A foreshock of M 3.0 hit the area within minutes of local solar noon about 12 hours earlier and was felt in the Port Orford, Oregon area.  These earthquake occurred near local solar noon and midnight and may have been promoted by tidal stresses with the full moon of March 25 as noted in this and previous issues of this summary:

 

"The full moon arrived on March 25, 2024 at 07:00 UT. Longitudes near local solar noon are near 105W while those at solar midnight are near 75E. These include in the west portions of the South-east Pacific Rise, western Mexico and central North America; in the east areas of central Asia are included in this longitude zone. These are the areas most likely to see significant tidal triggering with this full moon. As these include limited areas of high seismicity the likelihood of a major earthquake within about 4 days of March 25 would normally be deemed moderate to low. But this full moon will coincide with a major geomagnetic storm and this may help promote a major earthquake at this time." (March 23-25, 2024)

 

Earthquakes in this area often accompany or follow shortly after strong nor'easter storms in the northeastern U.S. Such a storm occurred over the past three days bringing ice and power outages throughout the area. This summary has noted this correlation on a number of previous occasions. For example on January 29, 2022 this summary noted:

 

"...This may have been promoted by movement of the North American plate associated with the massive nor'easter off the east coast of North America today. This system dumped a foot of snow on Boston, the most ever reported in that city in a 24-hour period. This summary had expected this type of seismic response to this storm in the previous issue as:

 

" ... a major nor'easter is beginning to progress up the eastern coast of the U.S. It may hit the Boston area with record snows today and on Saturday, January 29, 2022. Such nor'easters are often associated with a strong enhancement of seismicity along the western North American tectonic plate. A precautionary seismic watch is being called by this summary for this region through February 2, 2022." (January 27, 2022)

 

The last earthquakes with M>=5.7 off the coast of Oregon occurred on June 4, 2021 (M 5.9) and December 8, 2021 (M 5.8). This event also followed a full moon and was likely promoted by tidal stresses associated with that alignment as explained in this summary at the time:

 

"A strong series of earthquakes occurred off the coast of Oregon today at 120-130 West longitude. These events were reported lightly felt on the coast of Oregon including at Waldport, Eugene and Beaverton. The largest of these was M 5.8 which was felt with intensity II-III in Oregon in  Depoe Bay, Newport, Florence, Waldport, Hammond, Tualatin, Medford, Cloverdale, Seaside, Sheridan, Forest Grove, Springfield, Portland and as far as southern Washington State.

Other moderately large events of M 5.5, 5.5, 5.5, 5.5, 5.8, 5.3 ... also were recorded in this series. The last earthquakes of M>=5.8 in this area off the coast of Oregon occurred in August and September, 2019 with M 6.3 and 5.9 and as an M 6.2 on August 22, 2018 and an M 5.9 on August 22, 2018. The M 6.3 on August 29, 2019 is the strongest event in this area in the past 30 years. Today's activity appears to be occurring in the volcanic vents off the coast of Oregon. It is likely that this series was promoted by high tidal stresses associated with the new moon/eclipse of December 4." (December 8, 2021)

 

A foreshock of M 3.0 occurred within minutes of local solar noon today. It  was probably promoted by high tidal stresses which maximize near this hour. This foreshock may have brought on the major series which followed.

 

Forecast 161682 had expected today's activity within about 25 km was likely in late March, 2024. This activity is at 104 degrees from the M 7.1 in the Banda Sea of Indonesia of November 8, 2023 and near this distance from recent major earthquakes in Mindanao, Philippines and at the fourth node (90 degrees) from the New Guinea quake of March 23, 2024 and at the fifth node (72 degrees) from Brazil where an M 6.7 occurred on January 20, 2024 and may have been promoted by energy associated with those sources.

 

O: 27MAR2024 03:23:04  42.3N  126.6W Mw=5.7  EMSC   OFF COAST OF OREGON

O: 27MAR2024 03:34:31  42.3N  126.5W ML=3.5  EMSC   OFF COAST OF OREGON

O: 27MAR2024 03:49:16  42.3N  126.5W mb=4.1  EMSC   OFF COAST OF OREGON

O: 27MAR2024 03:14:25  42.4N  126.5W mb=3.9  EMSC   OFF COAST OF OREGON

O: 27MAR2024 03:25:34  42.4N  126.5W mb=4.8  EMSC   OFF COAST OF OREGON

O: 26MAR2024 20:15:21  42.7N  127.4W ML=3.0  EMSC   OFF COAST OF OREGON

O: 27MAR2024 03:22:05  42.3N  126.6W MB=4.4  EMSC   OFF COAST OF OREGON          

P: 22MAR2024 161682    42.5N  126.8W 3.0-5.1 BAAAA  Off Coast of Oregon        

 

The series of moderate earthquakes in the central mid-Atlantic which included an M 5.5 and 4.6 near the antipode of TC Megan's landfall in Australia several days earlier with an M 5.1 north of Ascension Island. The last earthquake in this region near Ascension Island with equal or larger magnitude was an M 5.4 on January 25, 2024 and prior to that an M 5.3 on October 1, 2022. This epicenter is near the geomagnetic equator and this may have been promoted by geomagnetic stresses with the recent geomagnetic storm. This event occurred within minutes of local solar noon and was also probably promoted by strong tidal stresses which maximize near this hour. Continued enhanced seismicity is likely in this area in the next several days.

 

Forecast 161533 had expected enhanced seismicity in the Central Mid-Atlantic was likely in late March.

 

O: 26MAR2024 13:14:10   1.5S   15.4W MB=5.1  EMSC   NORTH OF ASCENSION ISLAND    

P: 21MAR2024 161533     1.0S   20.0W 4.0-5.9 BACAA  Central Mid-Atlantic       

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 26MAR2024 08:58:51  32.6N   48.9E MB=4.5  EMSC   WESTERN IRAN                 

P: 27MAR2024 161646    34.0N   49.0E 3.8-5.3 ABAAA  So. Iran                   

 

NEIC reported this earthquake of M 4.5 in Iran was felt with intensity up to III in the area(s) of  Iran in Shahrak-e Kuluri.

 

O: 26MAR2024 08:02:55  36.6N   71.0E MB=4.6  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 24MAR2024 161612    37.0N   71.0E 3.8-5.2 AAAAA  Hindu Kush/Pakistan        

 

O: 26MAR2024 10:34:26  55.7N  160.0E MB=4.7  EMSC   KAMCHATKA PENINSULA, RUSSIA  

P: 24MAR2024 161704    53.0N  161.0E 4.0-5.5 ACAAA  E. of Kamchatka            

P: 25MAR2024 161707    56.0N  164.0E 4.0-5.6 AACAA  Komandorsky Isl            

 

No significant (M>=5) or unusual earthquakes were reported in Asia today.

 

INDONESIA AND PHILIPPINES

 

O: 26MAR2024 13:31:55   0.2N  123.9E MB=4.7  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 26MAR2024 161525     0.0N  125.0E 4.0-5.6 AAAAA  Mindanao, Philippines      

 

O: 26MAR2024 19:22:01   2.2N  126.8E MB=4.6  EMSC   MOLUCCA SEA                  

P: 24MAR2024 161524     2.0N  127.0E 4.0-5.5 AAAAA  Halmahera                  

 

O: 26MAR2024 23:33:11   4.2S  143.0E mb=4.6  EMSC   NEW GUINEA, PAPUA NEW GUINEA

O: 26MAR2024 10:15:26   4.4S  143.1E ML=4.7  EMSC   NEW GUINEA, PAPUA NEW GUINEA

O: 27MAR2024 03:03:55   4.0S  143.2E MB=4.9  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 28MAR2024 161545     5.0S  144.0E 4.0-5.4 AAAAA  Papua New Guinea           

 

O: 27MAR2024 04:37:05   5.8S  112.3E ML=4.1  EMSC   JAVA SEA

O: 26MAR2024 14:54:19   6.1S  112.3E ML=4.0  EMSC   JAVA, INDONESIA

O: 26MAR2024 13:11:09   5.3S  112.1E ML=4.1  EMSC   JAVA SEA                     

O: 26MAR2024 07:14:09   5.6S  112.6E ML=4.2  EMSC   JAVA SEA                     

P: 26MAR2024 161743    11.0S  115.0E 4.0-5.4 ACCAA  So. of Indonesia           

 

O: 26MAR2024 17:49:36   5.3S  145.8E MW=5.2  EMSC   EASTERN NEW GUINEA REG., P.N.G

O: 27MAR2024 04:27:20   6.6S  147.3E MB=4.9  EMSC   EASTERN NEW GUINEA REG., P.N.G

P: 31MAR2024 161540     6.0S  146.0E 4.0-5.4 BABAA  New Ireland                

 

NEIC reported this earthquake of M 4.9 in New Guinea was felt with intensity up to III in the area(s) of Papua New Guinea in Lae.

An M 5.2 hit east of this in Papua New Guinea today with M 5.2. NEIC reported it was felt with intensity up to III in Madang, PNG.

 

O: 26MAR2024 09:03:01   9.0S  100.5E MB=4.6  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P: 25MAR2024 161548     5.0S  102.0E 4.0-5.6 ACBAA  So. of Sumatera            

 

CENTRAL AND SOUTH AMERICA

 

O: 26MAR2024 12:30:44   3.4S   81.7W ML=4.4  EMSC   NEAR COAST OF NORTHERN PERU  

P: 29MAR2024 161535     4.0S   80.0W 4.0-5.6 BABAA  Ecuador                    

 

O: 27MAR2024 05:37:26  13.1N   90.1W ML=4.2  EMSC   OFFSHORE EL SALVADOR

O: 26MAR2024 18:33:18  13.3N   89.3W mb=4.3  EMSC   OFFSHORE EL SALVADOR

O: 27MAR2024 00:24:47  12.0N   89.4W MW=4.7  EMSC   OFF THE COAST OF EL SALVADOR 

P: 25MAR2024 161559    13.0N   91.0W 3.5-5.4 AAAAA  Guatemala                  

P: 27MAR2024 161560    14.0N   91.0W 3.5-5.3 AAAAA  Guatemala                  

 

NEIC reported this earthquake of M 4.3  in El Salvador was felt with intensity up to III in the area(s) of  El Salvador in Libertad.

EMSC reported moderate shaking in El Salvador at San Salvador and Sonsonate.

 

O: 26MAR2024 07:16:11  16.0S   74.0W ML=4.2  EMSC   NEAR COAST OF SOUTHERN PERU  

P: 27MAR2024 161742    17.0S   73.0W 4.0-6.1 AAAAA  So. Peru/Bolivia           

 

O: 27MAR2024 04:13:07  19.2N   64.8W MD=3.5  EMSC   VIRGIN ISLANDS REGION        

P: 22MAR2024 161579    20.0N   65.0W 3.0-4.7 BAAAA  Bahamas/No. Caribbean      

 

O: 26MAR2024 08:30:03  19.5N   68.7W MD=3.7  EMSC   DOMINICAN REPUBLIC REGION    

P: 26MAR2024 161576    18.0N   68.0W 3.4-5.2 ABAAA  Puerto Rico                

 

O: 26MAR2024 21:22:31  19.7N  102.4W ML=4.0  EMSC   MICHOACAN, MEXICO            

P: 26MAR2024 161567    18.0N  102.0W 3.5-5.4 ABAAA  Michoacan, Mexico          

 

O: 27MAR2024 05:08:28  23.6S   68.1W MB=5.2  EMSC   ANTOFAGASTA, CHILE           

P: 28MAR2024 161751    23.0S   69.0W 4.0-5.6 AAAAA  Coast No. Chile            

 

NEIC reported this earthquake of M 4.9-5.2 in Antofagasta, Chile was felt with intensity up to III in the area(s) of  Antofagasta, Chile in San Pedro de Atacama.

EMSC reported it was felt with moderate intensity in Antofagasta, Chile.

 

O: 26MAR2024 07:23:24  27.7N  112.3W ML=3.3  EMSC   GULF OF CALIFORNIA           

P: 26MAR2024 161583    28.0N  111.0W 3.5-5.1 AAAAA  Gulf of California         

 

O: 27MAR2024 01:20:40  27.7S   70.6W ML=4.6  EMSC   ATACAMA, CHILE               

P: 26MAR2024 161750    29.0S   71.0W 4.0-5.8 ABAAA  Coast Central Chile         

 

EMSC reported this earthquake of M 4.1 in Atacama, Chile was felt with intensity up to III in the area(s) of  Atacama, Chile in Copiapo.

GUC reported light shaking in Copiapo as well as in Tierra Amarilla, and Caldera, Chile.

 

O: 26MAR2024 07:59:13  35.4S   69.6W MB=4.4  EMSC   MENDOZA, ARGENTINA           

P: 20MAR2024 161500    35.0S   70.0W 4.0-5.8 CAAAA  Central Chile              

 

NEIC reported this earthquake of M 4.4 in Argentina was felt with intensity up to III in the area(s) of  Argentina in San Rafael.

 

 

AFRICA AND EUROPE

 

O: 26MAR2024 23:23:38  26.2S   27.8E ML=3.0  EMSC   SOUTH AFRICA                 

P: 27MAR2024 161754    27.0S   27.0E 3.0-4.6 AAAAA  Rep. South Africa          

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

O: 26MAR2024 06:57:48   9.9S  161.2E MB=4.9  EMSC   SOLOMON ISLANDS              

P: 25MAR2024 161739    10.0S  161.0E 4.0-5.6 AAAAA  No. of Santa Cruz Islands  

 

O: 26MAR2024 09:37:14  20.7S  174.0W MW=5.4  EMSC   TONGA                        

P: 28MAR2024 161759    20.0S  175.0W 4.0-5.7 AAAAA  Tonga Islands              

 

O: 27MAR2024 01:28:20  21.0S  173.7E MW=6.7  EMSC   VANUATU REGION               

P: 26MAR2024 161752    22.0S  172.0E 4.0-5.7 AABAA  Loyalty Islands            

 

OCEAN RIDGES

 

O: 26MAR2024 13:14:10   1.5S   15.4W MB=5.1  EMSC   NORTH OF ASCENSION ISLAND    

P: 21MAR2024 161533     1.0S   20.0W 4.0-5.9 BACAA  Central Mid-Atlantic       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 26MAR2024 10:34:58  32.3S  180.0E ML=4.2  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 28MAR2024 161772    34.0S  179.0E 4.0-5.5 ABAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 27MAR2024 04:15:26  33.1N  140.1E MB=4.4  EMSC   IZU ISLANDS, JAPAN REGION     

P: 21MAR2024 161629    34.0N  141.0E 4.0-5.5 CAAAA  Off East Coast Honshu      

P: 26MAR2024 161608    33.0N  138.0E 3.5-4.9 AABAA  Central/So. Honshu Japan   

 

O: 26MAR2024 21:06:06  35.4N  140.4E MB=4.6  EMSC   NEAR EAST COAST OF HONSHU,   

P: 27MAR2024 161629    35.0N  140.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

NEIC reported this earthquake of M 4.6 in Tokyo, Japan was felt with intensity up to III in the area(s) of  Tokyo, Japan in Togane.

 

O: 27MAR2024 02:03:28  46.1N  153.4E MB=4.9  EMSC   KURIL ISLANDS                

P: 29MAR2024 161675    46.0N  155.0E 3.5-5.5 AAAAA  NE Pacific                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 26MAR2024 17:45:29  30.5N  114.3W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 27MAR2024 161633    30.2N  114.1W 2.0-3.9 AAAAA  SW U.S.A                   

 

O: 26MAR2024 07:54:58  31.5N  115.6W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 28MAR2024 161638    32.4N  115.8W 2.5-4.7 AAAAA  So. California             

 

O: 27MAR2024 00:45:39  36.9N  121.3W MD=2.2  EMSC   CENTRAL CALIFORNIA           

P: 25MAR2024 161604    36.9N  121.7W 2.5-4.4 AAAAA  Central California         

 

O: 26MAR2024 08:10:41  38.2N  117.8W ML=2.3  EMSC   NEVADA                       

P: 27MAR2024 161600    38.6N  118.6W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 26MAR2024 07:10:11  40.4N  122.2W MD=2.4  EMSC   NORTHERN CALIFORNIA          

P: 27MAR2024 161681    40.6N  122.4W 2.5-4.9 AAAAA  Northern California        

 

 

ALASKA

 

O: 27MAR2024 03:35:16  61.5N  146.6W ML=3.1  EMSC   SOUTHERN ALASKA              

P: 24MAR2024 161720    60.9N  147.4W 3.2-5.0 BAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.1 in Southern Alaska was felt with intensity up to III in the area(s) of  Southern Alaska in Valdez.

 

O: 27MAR2024 06:20:23  63.1N  150.8W ML=3.2  EMSC   CENTRAL ALASKA               

P: 26MAR2024 161724    63.0N  148.6W 3.2-4.9 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 27MAR2024 03:23:04  42.3N  126.6W Mw=5.7  EMSC   OFF COAST OF OREGON

O: 27MAR2024 03:34:31  42.3N  126.5W ML=3.5  EMSC   OFF COAST OF OREGON

O: 27MAR2024 03:49:16  42.3N  126.5W mb=4.1  EMSC   OFF COAST OF OREGON

O: 27MAR2024 03:14:25  42.4N  126.5W mb=3.9  EMSC   OFF COAST OF OREGON

O: 27MAR2024 03:25:34  42.4N  126.5W mb=4.8  EMSC   OFF COAST OF OREGON

O: 26MAR2024 20:15:21  42.7N  127.4W ML=3.0  EMSC   OFF COAST OF OREGON

O: 27MAR2024 03:22:05  42.3N  126.6W MB=4.4  EMSC   OFF COAST OF OREGON          

P: 22MAR2024 161682    42.5N  126.8W 3.0-5.1 BAAAA  Off Coast of Oregon        

 

O: 26MAR2024 17:09:50  46.3N  122.2W ML=2.5  EMSC   WASHINGTON                   

P: 25MAR2024 161695    46.9N  122.0W 2.0-4.4 AAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 26MAR2024 20:34:46  31.7N  104.4W ML=2.2  EMSC   WESTERN TEXAS

O: 26MAR2024 20:52:48  31.7N  104.5W ML=2.5  EMSC   WESTERN TEXAS

O: 26MAR2024 09:59:43  31.6N  104.2W ML=2.7  EMSC   WESTERN TEXAS                

P: 24MAR2024 161636    31.4N  103.8W 2.0-4.3 AAAAA  SW U.S.A                   

P: 27MAR2024 161636    31.4N  104.8W 2.0-4.3 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 27MAR2024 05:46:07  34.2N   80.7W ML=2.1  EMSC   SOUTH CAROLINA               

P: 27MAR2024 161648    34.0N   80.0W 2.0-4.3 AAAAA  Southeast U.S.             

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

 

MODERATELY STRONG AFTERSHOCK IN MACQUARIE ISLANDS

 

EARTHQUAKE SUMMARY FOR MARCH 25, 2024

 

 

The strongest earthquake in the world today was an M 5.5 aftershock in the Macquarie Island region south of New Zealand.  It follows a series of moderate to strong earthquakes in the region in early March and late February, 2024 which included an M 5.4 on February; M 6.7 on March 3, and M 5.9 on March 5. Readers should note the similar conditions on March 4 as currently (solar-lunar alignment - and strong geomagnetic storm). At the time of the mainshock this summary noted:

 

 

"The geomagnetic field saw minor storm conditions today. The AP level was 29.  High latitudes  saw minor storm conditions with AP 49. Middle latitudes were at active conditions with AP 20.

 

On March 1, 2024 this summary noted in anticipation of this:

 

"Active conditions in the geomagnetic field could lead to enhanced seismicity at high auroral latitudes and near the geomagnetic equator. Recent seismicity in these regions in the Macquarie Island area south of New Zealand of M 5.5 on February 28; in Sumatra and Indonesia may help provide clues as to where such geomagnetic induced seismicity is likely with a strong geomagnetic storm at this time. This is most likely around March 3-4, 2024 according to SWPC." (March 1, 2024).

 

The AP reading of 29 today is the most disturbed the ionosphere has been since December 18, 2023 when it reached AP 36. The storm began as a sudden commencement event at about 16:15 UT according to data from SWPC reaching KP 7. At the time of the sudden commencement of this storm a strong earthquake of M 6.7 occurred in the Macquarie Island region south of New Zealand. It appears very likely that this event was triggered by the onset of this geomagnetic storm. Today's event in  the Macquarie Island area is the strongest in the world since an M 7.0 in Southern Xinjiang, China of January 22, 2024 (nearly 6 weeks). Two other events of M>=6.7 have hit in the world during the year 2024 - an M 7.6 in western Honshu, Japan on January 1, 2024 and an M 6.7 in the Talaud Islands of January 8, 2024.

 

This earthquake of M 6.7 is the strongest located within about 300 km of this epicenter in the Macquarie Island region in the past 35 years at least." (March 3, 2024) A foreshock in the Macquarie Island area of M 5.4 occurred on February 28, 2024.

 

 

"The M 6.0 in the Macquarie Island area was the strongest within about 250 km of that epicenter since an M 6.0 on April 12, 2007. The only event in this region in the past 35 years of significantly larger magnitude was an M 6.3-6.5 on November 5, 1994. Moderate earthquakes in the Macquarie Island area more recently occurred on June 8 (M 4.8) and as an M 5.3 on June 5, 2023." (June 9, 2023)

 

It is likely that today's event in Macquarie was promoted by strong tidal stresses with the full moon of February 24 as it occurred near the longitude of maximum stress with that event as noted in this and previous issues" (March 3, 2024)

 

Forecast 161777 had expected today's event within about 15 km was likely in the Macquarie Island region around March 26. This epicenter is at the third node (120 degrees) from the M 7.0 in Xinjiang, China of January 22, 2024 and at 103 degrees from the M 6.7 in Brazil of January 20, 2023 and was probably promoted by energy from those sources.

 

 

O: 25MAR2024 17:00:04  59.0S  158.3E MW=5.5  EMSC   MACQUARIE ISLAND REGION      

P: 26MAR2024 161777    59.0S  158.0E 3.0-4.9 AAAAA  Macquarie Island           

 

The strongest earthquake in the U.S. or Canada today was an M 3.7 off the coast of Oregon. This event occurred in an area which was strongly affected by the full moon of March 25 and may have been promoted by strong tidal stresses. This may be followed by further enhanced seismicity off the coast of Oregon - much associated with the current strong high-latitude geomagnetic storms. This summary had expected seismicity in this region would accelerate with the current full moon as noted in this and previous issues as:

 

"The full moon arrived on March 25, 2024 at 07:00 UT. Longitudes near local solar midnight are near 105W while those at solar noon are near 75E. These include in the west portions of the South-east Pacific Rise, western Mexico and central North America; in the east areas of central Asia are included in this longitude zone. These are the areas most likely to see significant tidal triggering with this full moon. As these include limited areas of high seismicity the likelihood of a major earthquake within about 4 days of March 25 would normally be deemed moderate to low. But this full moon will coincide with a major geomagnetic storm and this may help promote a major earthquake at this time." (March 19-24, 2024)

 

Forecast 161682 had expected today's activity off the coast of Oregon was likely around March 22, 2024. This epicenter is at the third node from the M 6.7 in the Macquarie Islands of March 3, 2024 and at the fifth node (72 degrees) from the M 6.7 in Brazil of January 20, 2024 and was probably promoted by energy from those sources.

 

O: 26MAR2024 00:30:03  43.4N  127.0W MB=3.7  EMSC   OFF COAST OF OREGON          

P: 22MAR2024 161682    42.5N  126.8W 3.0-5.1 BAAAA  Off Coast of Oregon        

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 25MAR2024 18:33:01  35.9N   91.5E MB=4.9  EMSC   SOUTHERN QINGHAI, CHINA      

P: 24MAR2024 161658    36.0N   93.0E 3.8-5.2 AABAA  Xizang                     

P: 26MAR2024 161658    35.0N   90.0E 3.8-5.2 AABAA  Xizang                     

 

O: 25MAR2024 10:13:35  24.0N  121.7E MB=4.4  EMSC   TAIWAN                       

O: 25MAR2024 10:13:35  24.0N  121.6E MB=4.6  CWB    TAIWAN                       

P: 24MAR2024 161591    25.0N  122.0E 4.0-5.5 AAAAA  Ryukyu Islands             

 

CWB reported this earthquake was felt with intensity III in Hualien, II in Yilan, Nantou, Taichung, Kaohsiung, Changhua, Yunlin and I in Taitung, Taipei, Chiayi, Miaoli, Taoyuan, Hsinchu Counties, Taiwan.

NEIC reported this earthquake of M 4.4 in Taiwan  was felt with intensity up to III in the area(s) of   Taiwan in Hualien City.

EMSC reported light shaking in Taiwan in Xincheng Township.

TAI reported intensity up to III in the Hualien and Yilan County areas.

 

No significant (M>=5) or unusual earthquakes were reported in Asia today.

 

INDONESIA AND PHILIPPINES

 

O: 25MAR2024 17:36:34   0.9N  125.4E MB=4.6  EMSC   MOLUCCA SEA                   

P: 26MAR2024 161525     0.0N  125.0E 4.0-5.6 AAAAA  Mindanao, Philippines      

 

NEIC reported this earthquake of M 4.6 in Ceram, Indonesia was felt with intensity up to III in the area(s) of  Ceram, Indonesia in Bitung.

 

O: 25MAR2024 11:54:26   1.0N  113.1E ML=4.0  EMSC   KALIMANTAN, INDONESIA        

P: 14MAR2024 161255     0.0N  120.0E 4.0-5.4 DADAA  Celebes Sea                

 

O: 25MAR2024 14:03:22   4.3S  137.5E ML=4.2  EMSC   PAPUA, INDONESIA             

P: 25MAR2024 161552     2.0S  139.0E 4.0-5.5 ACBAA  West Irian, PNG            

 

O: 25MAR2024 07:09:38   4.7S  133.8E ML=4.1  EMSC   NEAR S COAST OF PAPUA, INDONES

P: 30MAR2024 161551     5.0S  134.0E 4.0-5.4 BAAAA  West Irian, PNG            

 

O: 26MAR2024 07:14:09   5.6S  112.6E ML=4.2  EMSC   JAVA SEA                     

O: 25MAR2024 08:23:52   5.7S  112.3E ML=4.0  EMSC   JAVA SEA

O: 25MAR2024 13:54:20   5.7S  112.5E ML=4.0  EMSC   JAVA SEA

O: 26MAR2024 06:07:54   6.1S  112.4E ML=4.1  EMSC   JAVA, INDONESIA

P: 25MAR2024 161546     7.0S  106.0E 4.0-5.4 ABCAA  So. of Java                

 

O: 25MAR2024 07:30:58   6.9S  105.4E ML=4.2  EMSC   SUNDA STRAIT, INDONESIA      

P: 25MAR2024 161546     7.0S  106.0E 4.0-5.4 AAAAA  So. of Java                

 

O: 25MAR2024 17:47:21   8.7S  118.4E ML=4.1  EMSC   SUMBAWA REGION, INDONESIA    

P: 24MAR2024 161550     9.0S  118.0E 4.0-5.4 AAAAA  Sumbawa Island area        

 

CENTRAL AND SOUTH AMERICA

 

O: 25MAR2024 15:40:00   3.8S   79.7W ML=4.0  EMSC   NEAR COAST OF ECUADOR

 

O: 25MAR2024 16:06:30   8.1N   83.6W ML=4.4  EMSC   COSTA RICA                   

P: 24MAR2024 161522     9.0N   84.0W 3.5-5.3 AAAAA  Costa Rica                 

 

O: 25MAR2024 18:48:20   3.2S   78.3W ML=4.0  EMSC   PERU-ECUADOR BORDER REGION   

P: 29MAR2024 161535     4.0S   80.0W 4.0-5.6 BABAA  Ecuador                    

 

O: 25MAR2024 14:40:40  14.2N   93.3W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 25MAR2024 16:33:02  14.2N   93.3W ML=4.3  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 26MAR2024 05:08:42  15.3N   94.4W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 25MAR2024 20:39:39  15.9N   93.4W ML=4.1  EMSC   CHIAPAS, MEXICO              

P: 24MAR2024 161556    16.0N   94.0W 3.5-5.4 AAAAA  Chiapas, Mexico            

 

O: 26MAR2024 07:16:11  16.0S   74.0W ML=4.2  EMSC   NEAR COAST OF SOUTHERN PERU  

P: 27MAR2024 161742    17.0S   73.0W 4.0-6.1 AAAAA  So. Peru/Bolivia           

 

O: 26MAR2024 00:50:22  17.3N  100.7W ML=4.1  EMSC   GUERRERO, MEXICO             

P: 26MAR2024 161567    19.0N  101.0W 3.5-5.3 ABAAA  Michoacan, Mexico          

 

O: 25MAR2024 07:08:25  19.1N   66.1W MD=3.2  EMSC   PUERTO RICO REGION           

P: 22MAR2024 161579    20.0N   65.0W 3.0-4.7 BAAAA  Bahamas/No. Caribbean      

 

O: 25MAR2024 21:24:43  19.6N   70.8W ML=3.1  EMSC   DOMINICAN REPUBLIC            

P: 21MAR2024 161576    19.0N   71.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 25MAR2024 16:14:19  25.8S   63.5W MB=4.7  EMSC   SANTIAGO DEL ESTERO, ARGENTINA

P: 25MAR2024 161749    24.0S   64.0W 4.0-5.7 ABAAA  Argentina                  

 

O: 25MAR2024 20:36:51  27.6N  111.4W ML=3.7  EMSC   GULF OF CALIFORNIA           

O: 25MAR2024 17:54:43  28.1N  112.3W ML=3.8  EMSC   GULF OF CALIFORNIA

P: 26MAR2024 161583    28.0N  111.0W 3.5-5.1 AAAAA  Gulf of California         

 

 

AFRICA AND EUROPE

 

EMSC reported an earthquake of M 3.6 in northern Germany was felt with intensity up to III in the area(s) of Bassum, Weyhe, Stuhr, Bremen.  

 

O: 25MAR2024 10:10:44  37.9N   36.3E ML=3.9  EMSC   CENTRAL TURKEY               

P: 24MAR2024 161652    38.0N   36.0E 3.5-5.2 AAAAA  Turkey                     

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

O: 26MAR2024 06:57:48   9.9S  161.2E mb=4.9  EMSC   SOLOMON ISLANDS

O: 25MAR2024 17:24:27  10.1S  161.0E MB=4.5  EMSC   SOLOMON ISLANDS              

P: 25MAR2024 161739    10.0S  161.0E 4.0-5.6 AAAAA  No. of Santa Cruz Islands  

 

O: 26MAR2024 03:14:15  26.0S  179.6E MB=4.4  EMSC   SOUTH OF FIJI ISLANDS        

P: 22MAR2024 161761    23.0S  179.0E 4.0-5.8 BCAAA  Tonga/Fiji                 

 

OCEAN RIDGES

 

O: 25MAR2024 17:00:04  59.0S  158.3E MW=5.5  EMSC   MACQUARIE ISLAND REGION      

P: 26MAR2024 161777    59.0S  158.0E 3.0-4.9 AAAAA  Macquarie Island           

 

 

ZEALANDIA AND AUSTRALIA REGION

 

 

O: 25MAR2024 17:00:04  59.0S  158.3E MW=5.5  EMSC   MACQUARIE ISLAND REGION      

P: 26MAR2024 161777    59.0S  158.0E 3.0-4.9 AAAAA  Macquarie Island           

 

JAPAN AND KURIL ISLANDS

 

O: 25MAR2024 11:31:57  46.5N  156.5E MB=4.0  EMSC   EAST OF KURIL ISLANDS        

P: 29MAR2024 161675    46.0N  155.0E 3.5-5.5 BAAAA  NE Pacific                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 26MAR2024 05:18:12  32.7N  115.7W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 25MAR2024 14:47:03  33.0N  115.9W ML=2.4  EMSC   SOUTHERN CALIFORNIA          

P: 24MAR2024 161638    32.9N  115.6W 2.5-4.6 AAAAA  So. California             

 

O: 26MAR2024 06:13:32  35.3N  118.6W ML=2.3  EMSC   CENTRAL CALIFORNIA           

P: 25MAR2024 161644    35.7N  118.1W 2.5-4.4 AAAAA  So. California             

 

O: 25MAR2024 15:40:07  35.8N  119.9W MD=2.4  EMSC   CENTRAL CALIFORNIA           

O: 25MAR2024 08:25:39  36.3N  119.7W MD=2.7  EMSC   CENTRAL CALIFORNIA           

P: 29MAR2024 161602    36.1N  120.1W 2.5-4.7 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in Central California was felt with intensity up to III in the area(s) of  Central California in Armona.

 

O: 25MAR2024 07:14:02  37.1N  121.2W ML=3.1  EMSC   CENTRAL CALIFORNIA           

P: 25MAR2024 161604    36.9N  121.7W 2.5-4.4 AAAAA  Central California         

P: 28MAR2024 161604    37.1N  121.5W 2.5-4.4 BAAAA  Central California         

 

NEIC reported this earthquake of M 3.1 in San Francisco, California was felt with intensity up to III in the area(s) of  San Francisco, California in Gustine.

 

O: 25MAR2024 23:54:31  38.2N  118.2W ML=2.4  EMSC   NEVADA                       

P: 27MAR2024 161600    38.6N  118.6W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 26MAR2024 00:57:23  38.8N  122.8W MD=2.1  EMSC   NORTHERN CALIFORNIA          

O: 26MAR2024 01:00:50  38.8N  122.8W MD=2.4  EMSC   NORTHERN CALIFORNIA

P: 27MAR2024 161606    38.9N  122.8W 2.5-4.7 AAAAA  Central California         

 

O: 26MAR2024 07:10:11  40.4N  122.2W MD=2.4  EMSC   NORTHERN CALIFORNIA          

P: 27MAR2024 161681    40.6N  122.4W 2.5-4.9 AAAAA  Northern California        

 

ALASKA

 

No events of M>=3 were located in Alaska today.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 26MAR2024 00:30:03  43.4N  127.0W MB=3.7  EMSC   OFF COAST OF OREGON          

P: 22MAR2024 161682    42.5N  126.8W 3.0-5.1 BAAAA  Off Coast of Oregon        

 

O: 26MAR2024 06:50:42  46.7N  122.4W ML=2.5  EMSC   WASHINGTON                   

O: 25MAR2024 08:01:30  47.7N  122.1W ML=2.6  EMSC   SEATTLE-TACOMA AREA, WASHINGTO

P: 25MAR2024 161695    46.9N  122.0W 2.0-4.4 AAAAA  Washington state, U.S.     

 

NEIC reported this earthquake of M 2.6 in Washington State was felt with intensity up to III in the area(s) of  Washington State in Alder.

NEIC reported this earthquake of M 2.6 in Washington State was felt with intensity up to III in the area(s) of  Washington State in Redmond.

 

ROCKY MOUNTAINS REGION

 

O: 25MAR2024 16:30:23  31.7N  104.3W ML=2.1  EMSC   WESTERN TEXAS

O: 25MAR2024 23:51:41  31.6N  104.5W ML=2.5  EMSC   WESTERN TEXAS                

P: 27MAR2024 161636    31.4N  104.8W 2.0-4.3 AAAAA  SW U.S.A                   

 

O: 26MAR2024 03:47:16  43.5N  110.4W ML=2.5  EMSC   WYOMING                      

P: 26MAR2024 161697    44.2N  110.3W 2.0-4.0 AAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O: 25MAR2024 09:43:15  47.5N   70.0W MB=1.6  ECAN OF LA POCATI├¿RE, QC  

O: 24MAR2024 20:31:24  47.6N   70.2W MB=0.7  ECAN OF LA MALBAIE, QC              

P: 25MAR2024 161671    47.0N   69.0W 2.0-4.0 AAAAA  Maine                      

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

STRONGEST HIGH-LATITUDE GEOMAGNETIC STORM IN NEARLY 2.5 YEARS THREATENS GLOBAL SEISMICITY

 

EARTHQUAKE SUMMARY FOR MARCH 24, 2024

 

The geomagnetic field saw severe storm conditions today. The AP level was 64.  High latitudes  saw severe storm conditions with AP 100. Middle latitudes were at strong storm conditions with AP 43. The last time high latitude AP was at 100 or greater was on November 4, 2021 when it reached 131. Planetary AP was 69 on that date. At that time this summary noted in regard to possible seismic triggering:

 

"The strongest earthquake in the world today was an M 5.8 in Ceram, Indonesia. BMG reported it was felt with intensity V in Sawai; IV in Wahai; III in Ambon and Masohi and Saparua, Indonesia. This continues a strong activation of the region of Indonesia which has accompanied the current geomagnetic storm. Indonesia is located on the geomagnetic equator and is often activated during such storms. The last earthquake within Seram, Indonesia within about 200 km of today's epicenter with M>=5.7 occurred on June 15, 2021 and September 25, 2019 with M 5.9 and M 6,5 respectively. " November 4, 2021)

 

and

 

"The last time high latitude AP exceeded 120 was on December 15, 2006 when it hit AP 120 with global AP at 104. The earthquake in 2006 was followed several days later by an M 7.0 in Taiwan. The last time the AP disturbance at high latitudes exceeded today's index of 131 was on September 11-12 (AP 131 and 136).

The storm in September, 2005 was accompanied by an M 7.7 in New Ireland and an M 6.4 in the Nias region of Indonesia. This history suggests that a major earthquake is likely in the next several days. In general, strong geomagnetic storms see major earthquakes at the time of the storm's commencement or about 4-5 days later as the ionospheric ring currents at high latitude and about 10 degrees from the geomagnetic equator reemerge after the disturbance. This often includes a strong to major earthquake. At this time such an event appears most likely near the geomagnetic equator or at high latitudes ... (November 5, 2021)

 

A strong M 6.2 followed this geomagnetic storm in the Molucca Sea of Indonesia on November 6, 2021. A similar M 6.2 hit Nicaragua on November 9, 2021 with an M 6.6 on November 10, 2021 in Taiwan. These were probably promoted by effects associated with this geomagnetic storm. Similar seismicity is considered likely in the next three days following today's storm.

 

The strongest earthquake in the world today was an M 5.5 in the northern mid-Atlantic Ridge area. It was not reported felt in this remote area. The last earthquake of M>=5.5 within about 200 km of this epicenter in the North Atlantic Ridge occurred as an M 6.0 on September 18, 2015 and prior to that an M 6.0 on September 5, 2013.   A smaller M 4.6 hit the area to the south of this yesterday. This summary speculated it may have been triggered by antipodal focusing of energy associated with the landfall of Tropical Cyclone Megan  as follows:

 

 

"An earthquake of M 4.6 occurred today in the Northern Mid-Atlantic. It was not felt in this remote epicentral area. It was likely promoted by antipodal energy from Tropical storm Megan which passed over the antipode to this epicenter three days ago and was expected in this summary at the time as:

 

"TC Megan (19P) continued today in the area North of Australia with winds up to 80 kts.  This system is expected to track to the southwest over the next week and to make landfall today. It could help promote enhanced seismicity the area of New Guinea and northern Australia during this period. It is currently nearly antipodal to the northern mid-Atlantic at 16N 43W where some promoted antipodal seismicity may occur in the next several days." (March 20, 2024)

 

Today's event in the northern Mid-Atlantic Ridge area is the largest reported within about 250 km of this epicenter since an M 4.7 on July 23, 2023 and an M 5.0 on September 27, 2022.

 

Forecast 161569 had expected this event in this area was likely around March 27.

This epicenter is at 104 degrees from the M 7.0 in Xinjiang, China of January 22, 2024 and may have been promoted by energy from that source." (March 24, 2024)

 

The precise location of the landfall of TC Megan on March 19, 2024 was 16.5S 136E with the exact antipode at 16.5N 44W. This area appears to be particularly vulnerable to energy associated with Tropical Cyclones as noted in this  summary when the last event of M>=5.5 occurred on September 18, 2015:

 

"The relation of seismicity to triggering phenomena was underscored today when an M 5.6-6.0 earthquake hit in the Northern Mid-Atlantic ocean floor. Two major promoters of this earthquake were Tropical Depression Nine which crossed over this epicenter today ...

 

... The last earthquake within about 200 km of this epicenter in the Northern Atlantic of M>=5.5 occurred as events of M 5.9 on September 5, 2013 and prior to that as an M 5.5 on December 8, 2008. The last earthquake of M>=6 in this region occurred on October 1, 1998 with M 6.0, the only such event in the past 25 years in the area. All but one of the 11 earthquakes in this portion of the Atlantic have occurred during hurricane season (September through December) in the past 25 years, further suggesting regional seismic activation during the Hurricane season. This storm had been noted in the previous summary as a possible seismic trigger" (September 18, 2015)

 

Today's earthquake occurred near local solar midnight within several hours of today's full moon and was likely promoted by associated strong tidal stresses and/or the current geomagnetic storm which was strong at the time of this earthquake with KP reaching up to 5 about 05-06:00 UT. Full moon tidal

effects were expected to maximize (as per this report) as:

 

"The full moon will arrive on March 25, 2024 at 07:00 UT. Longitudes near local solar noon are near 105W while those at solar midnight are near 75E. These include in the west portions of the South-east Pacific Rise, western Mexico and central North America; in the east areas of central Asia are included in this longitude zone. These are the areas most likely to see significant tidal triggering with this full moon. As these include limited areas of high seismicity the likelihood of a major earthquake within about 4 days of March 25 would normally be deemed moderate to low. But this full moon will coincide with a major geomagnetic storm and this may help promote a major earthquake at this time." (March 17-24. 2024)

 

Forecast 161569 had expected today's event was likely within about 50 km of this epicenter between March 21 and 27, 2024. This epicenter is at 103 degrees from the M 7.0 in Xinjiang, China of January 22, 2024 and may have been promoted by energy from that source.

 

O: 25MAR2024 05:22:18  16.6N   46.5W MW=5.5  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 21MAR2024 161569    17.0N   47.0W 4.0-5.5 BAAAA  Mid-Atlantic Ridge         

P: 27MAR2024 161569    15.0N   45.0W 4.0-5.6 ABAAA  Mid-Atlantic Ridge         

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

 

O: 25MAR2024 03:27:32  31.1N   70.3E MB=4.5  EMSC   PAKISTAN                     

O: 25MAR2024 03:28:48  31.9N   69.6E MB=4.8  EMSC   PAKISTAN                     

P: 26MAR2024 161590    29.0N   68.0E 3.5-4.9 ACBAA  Pakistan                   

 

O: 24MAR2024 10:36:04  36.8N   71.1E MB=4.1  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 24MAR2024 161612    37.0N   71.0E 3.8-5.2 AAAAA  Hindu Kush/Pakistan        

 

O: 24MAR2024 09:45:04  45.2N   99.9E MB=4.1  EMSC   CENTRAL MONGOLIA             

P: 29MAR2024 161672    45.0N  102.0E 4.0-5.4 BABAA  Mongolia                   

 

O: 25MAR2024 02:36:42  52.4N  163.6E MW=5.1  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 24MAR2024 161704    53.0N  161.0E 4.0-5.5 AABAA  E. of Kamchatka            

P: 25MAR2024 161707    56.0N  164.0E 4.0-5.6 ACAAA  Komandorsky Isl            

 

INDONESIA AND PHILIPPINES

 

O: 24MAR2024 19:19:30   0.1S   97.0E ML=4.1  EMSC   KEPULAUAN BATU, INDONESIA    

P: 23MAR2024 161528     0.0N   99.0E 4.0-5.4 AABAA  So. Sumatera               

 

O: 24MAR2024 11:53:56   1.7S  133.3E MB=5.0  EMSC   PAPUA, INDONESIA             

P: 26MAR2024 161551     2.0S  133.0E 4.0-5.6 AAAAA  West Irian, PNG            

 

O: 24MAR2024 23:17:32   1.8S  123.3E ML=4.3  EMSC   SULAWESI, INDONESIA          

P: 26MAR2024 161525     0.0N  125.0E 4.0-5.6 ABBAA  Mindanao, Philippines      

 

O: 24MAR2024 10:52:07   1.9N  127.3E ML=4.1  EMSC   HALMAHERA, INDONESIA         

P: 24MAR2024 161524     2.0N  127.0E 4.0-5.5 AAAAA  Halmahera                  

 

O: 24MAR2024 19:49:08   4.3N   97.0E mb=4.4  EMSC   NORTHERN SUMATRA, INDONESIA

O: 24MAR2024 19:55:07   4.2N   97.0E ML=4.3  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 27MAR2024 161526     2.0N   97.0E 4.0-5.6 BCAAA  Nicobar Islands            

 

O: 24MAR2024 15:34:06   7.6S  108.6E MB=4.6  EMSC   JAVA, INDONESIA              

P: 28MAR2024 161546     9.0S  108.0E 4.0-5.4 BBAAA  So. of Java                

 

NEIC reported this earthquake of M 4.6 in Java, Indonesia was felt with intensity up to III in the area(s) of  Java, Indonesia in Sidareja.

 

O: 24MAR2024 06:22:26   8.8N  126.4E MB=5.2  EMSC   MINDANAO, PHILIPPINES        

P: 25MAR2024 161520     9.0N  126.0E 4.0-5.4 AAAAA  Central Philippines        

 

O: 25MAR2024 02:21:45  12.2N  143.9E MB=5.2  EMSC   GUAM REGION                  

P: 23MAR2024 161577    12.0N  144.0E 4.0-5.4 AAAAA  So. Marianas/Guam          

 

NEIC reported this earthquake of M 5.2 in Guam was felt with intensity up to III in the area(s) of  Guam in Merizo Village.

 

 

CENTRAL AND SOUTH AMERICA

 

O: 24MAR2024 22:04:07  13.5N   92.6W ML=4.1  EMSC   OFF THE COAST OF GUATEMALA   

P: 25MAR2024 161559    13.0N   91.0W 3.5-5.4 AABAA  Guatemala                   

 

O: 24MAR2024 08:36:58  15.4N   94.8W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 24MAR2024 161556    16.0N   94.0W 3.5-5.4 AAAAA  Chiapas, Mexico            

 

O: 24MAR2024 06:51:59  17.4N   95.0W ML=3.9  EMSC   VERACRUZ, MEXICO

O: 25MAR2024 05:34:11  17.0N   95.3W ML=4.0  EMSC   OAXACA, MEXICO               

P: 24MAR2024 161557    17.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 24MAR2024 21:46:59  17.8N   74.0W ML=3.5  EMSC   HAITI REGION                 

P: 24MAR2024 161580    20.0N   73.0W 3.0-4.6 ACAAA  Bahamas/No. Caribbean      

 

O: 24MAR2024 22:18:50  19.3N   69.4W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION

O: 25MAR2024 00:27:18  19.4N   69.6W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION

O: 25MAR2024 03:33:52  18.2N   69.1W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 23MAR2024 161576    18.0N   69.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 25MAR2024 03:15:23  18.4N   72.1W ML=3.0  EMSC   HAITI REGION                 

P: 21MAR2024 161576    19.0N   71.0W 3.4-4.9 BAAAA  Puerto Rico                

P: 24MAR2024 161580    20.0N   73.0W 3.0-4.6 ABAAA  Bahamas/No. Caribbean      

 

O: 24MAR2024 19:50:11  19.5S   70.0W MB=5.1  EMSC   TARAPACA, CHILE              

P: 25MAR2024 161758    20.0S   71.0W 4.0-5.6 AAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 5.1 in  Northern Chile was felt with intensity up to IV in the area(s) of  Northern Chile  in Cuya.

EMSC reported this earthquake of M 5.1 in Northern Chile was felt with intensity up to III in the area(s) of  Northern Chile in Tarapaca at Iquique, Alto Hospicio, Arica.  

 

O: 24MAR2024 11:17:30  25.8S   64.5W ML=4.0  EMSC   SALTA, ARGENTINA             

P: 25MAR2024 161749    24.0S   64.0W 4.0-5.7 ABAAA  Argentina                  

 

O: 24MAR2024 10:35:03  26.3N  110.7W ML=4.0  EMSC   GULF OF CALIFORNIA           

O: 24MAR2024 20:41:02  26.5N  110.9W ML=4.0  EMSC   GULF OF CALIFORNIA

O: 25MAR2024 05:15:12  26.5N  110.7W ML=4.1  EMSC   GULF OF CALIFORNIA

O: 25MAR2024 05:32:17  26.6N  110.5W ML=3.9  EMSC   GULF OF CALIFORNIA

P: 26MAR2024 161583    28.0N  111.0W 3.5-5.1 ABAAA  Gulf of California         

 

O: 25MAR2024 05:40:39  27.8N  112.3W ML=3.5  EMSC   GULF OF CALIFORNIA           

P: 26MAR2024 161583    28.0N  111.0W 3.5-5.1 AAAAA  Gulf of California         

 

O: 24MAR2024 13:16:23  30.0S   71.3W ML=4.0  EMSC   COQUIMBO, CHILE              

P: 23MAR2024 161750    29.0S   70.0W 4.0-5.9 AAAAA  Coast Central Chile        

 

EMSC reported this earthquake of M 4.1  in Coquimbo, Chile was felt with intensity up to III in the area(s) of  Coquimbo, Chile in La Serena.

 

AFRICA AND EUROPE

 

O: 24MAR2024 09:21:58  45.3N   14.7E MB=4.0  EMSC   CROATIA                      

P: 24MAR2024 161660    45.0N   12.0E 3.0-5.1 AABAA  Austria                     

 

EMSC reported this earthquake of M 4.0 in Croatia was felt with intensity up to III in the area(s) of  Croatia in Fuzine, Drivenik, Hreljin, Krizisce, Smrika, Jadranovo, among others.

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

O: 24MAR2024 13:12:06  15.5S  177.5E MB=5.1  EMSC   FIJI                         

P: 22MAR2024 161737    18.0S  176.0E 4.0-5.4 ACBAA  Fiji Islands               

 

O: 25MAR2024 04:16:39  20.1S  178.3W MB=4.8  EMSC   FIJI REGION                  

P: 26MAR2024 161759    20.0S  178.0W 4.0-6.0 AAAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 25MAR2024 05:22:18  16.6N   46.5W MW=5.5  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 21MAR2024 161569    17.0N   47.0W 4.0-5.5 BAAAA  Mid-Atlantic Ridge         

P: 27MAR2024 161569    15.0N   45.0W 4.0-5.6 ABAAA  Mid-Atlantic Ridge         

 

 

ZEALANDIA AND AUSTRALIA REGION

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today.

 

JAPAN AND KURIL ISLANDS

 

O: 24MAR2024 17:46:59  46.7N  152.8E MB=4.6  EMSC   KURIL ISLANDS                

P: 22MAR2024 161690    46.0N  154.0E 3.5-5.4 AAAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 24MAR2024 22:36:53  36.6N  121.2W MD=2.2  EMSC   CENTRAL CALIFORNIA           

P: 26MAR2024 161602    36.2N  120.8W 2.5-4.5 AAAAA  Central California         

 

O: 24MAR2024 17:22:43  38.8N  122.8W MD=2.2  EMSC   NORTHERN CALIFORNIA          

P: 25MAR2024 161606    38.5N  122.7W 2.5-4.9 AAAAA  Central California         

 

O: 25MAR2024 06:58:25  40.5N  124.4W MD=2.8  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 26MAR2024 161682    40.3N  124.7W 2.5-4.5 AAAAA  Off Coast of No. Calif     

 

ALASKA

 

No events of M>=3 were located in Alaska today.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 24MAR2024 08:33:16  48.1N  122.7W ML=2.8  EMSC   PUGET SOUND REGION, WASHINGTON

P: 26MAR2024 161696    49.0N  123.0W 2.0-4.3 AAAAA  Washington state, U.S.     

 

NEIC reported this earthquake of M 2.8 in Washington State was felt with intensity up to III in the area(s) of  Washington State in Townsend.

 

ROCKY MOUNTAINS REGION

 

O: 24MAR2024 07:00:26  31.6N  104.0W ML=2.0  EMSC   WESTERN TEXAS

O: 24MAR2024 08:01:36  31.6N  104.5W ML=2.0  EMSC   WESTERN TEXAS

O: 24MAR2024 21:16:40  31.6N  104.5W ML=2.0  EMSC   WESTERN TEXAS

O: 25MAR2024 01:41:58  31.7N  104.1W ML=2.2  EMSC   WESTERN TEXAS

O: 24MAR2024 12:10:51  31.0N  103.7W ML=2.1  EMSC   WESTERN TEXAS                

O: 25MAR2024 04:27:10  31.4N  103.8W ML=2.0  EMSC   WESTERN TEXAS                

P: 24MAR2024 161636    31.4N  103.8W 2.0-4.3 AAAAA  SW U.S.A                   

 

EMSC reported this earthquake of M 2.1 in Western Texas was felt with intensity up to III in the area(s) of  Western Texas in Balmorhea with an earthquake noise.

 

O: 24MAR2024 08:39:27  43.2N  110.9W ML=2.1  EMSC   WYOMING                      

P: 26MAR2024 161697    44.2N  110.3W 2.0-4.0 AAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O: 24MAR2024 09:18:46  29.0N   98.0W ML=2.8  EMSC   SOUTHERN TEXAS               

P: 19MAR2024 161324    28.0N   98.0W 3.0-4.5 BAAAA  Northern Mexico            

P: 29MAR2024 161589    28.0N   97.0W 3.0-4.4 BAAAA  Northern Mexico            

 

NEIC reported this earthquake of M 2.8 in Southern Texas was felt with intensity up to IV in the area(s) of  Southern Texas in Falls City.

 

O: 24MAR2024 07:22:20  34.2N   80.7W MD=2.2  EMSC   SOUTH CAROLINA               

P: 27MAR2024 161648    34.0N   80.0W 2.0-4.3 BAAAA  Southeast U.S.             

 

O: 24MAR2024 15:45:06  34.7N   85.0W MD=2.2  EMSC   GEORGIA, USA                 

P: 19MAR2024 161381    34.0N   85.0W 2.0-4.6 BAAAA  Southeast U.S.             

 

O: 25MAR2024 06:54:57  34.7N   96.6W ML=2.3  EMSC   OKLAHOMA

O: 25MAR2024 02:16:40  35.6N   96.7W ML=2.3  EMSC   OKLAHOMA                     

P: 25MAR2024 161649    35.0N   96.0W 2.0-4.1 AAAAA  Southern Plains            

 

HAWAII

 

O: 24MAR2024 07:06:56  19.3N  155.4W ML=3.4  EMSC   ISLAND OF HAWAII, HAWAII     

P: 25MAR2024 161561    19.3N  155.2W 3.0-4.6 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.2 in Hawaii was felt with intensity up to IV in the area(s) of  Hawaii in Pahala.

EMSC reported rattled walls in Naalehu, Hawaii.

 

 

MAJOR QUAKE SHAKES PAPUA NEW GUINEA WITH SEVERE GEOMAGNETIC STORM

 

EARTHQUAKE SUMMARY FOR MARCH 23, 2024

 

 

A major earthquake of M 6.9-7.0 occurred today in Papua New Guinea. NEIC reported to have been felt with intensity VIII in Ambunti, New Guinea.

EMSC reported intensity IV-V in Madang Province and light shaking in Goroka in Eastern Highlands Province, Papua, New Guinea. Aftershocks of M 5.1 and 5.2 were also felt in New Guinea at Ambunti. It is likely that this event was promoted by the major geomagnetic storm today as it occurred at the height of that storm on the geomagnetic equator in an area where a major earthquake was expected at this time as noted in the previous summary:

 

"The full moon will arrive on March 25, 2024 at 07:00 UT. Longitudes near local solar noon are near 105W while those at solar midnight are near 75E. These include in the west portions of the South-east Pacific Rise, western Mexico and central North America; in the east areas of central Asia are included in this longitude zone. These are the areas most likely to see significant tidal triggering with this full moon. As these include limited areas of high seismicity the likelihood of a major earthquake within about 4 days of March 25 would normally be deemed moderate to low. But this full moon will coincide with a major geomagnetic storm and this may help promote a major earthquake at this time." (March 23, 2024)

 

 and by the geomagnetic storm today which maximized with KP around 7 at 09:00 UT (see external effects section of this report below) as reported in previous issues of this summary:

 

"It is likely that the current geomagnetic storms along with an expected severe geomagnetic storm in the next two days will help promote enhanced seismicity near the equator especially in Indonesia ..." (March 23-24, 2024)

 

Today's event may be an aftershock of a similar M 6.9-7.0 on April 2, 2023 as it occurred about 25 km from that epicenter. At that time this summary noted in this regard:

 

 

"A series of moderately strong to major earthquakes occurred today. These included an M 5.5 in the Flores Sea; an M 5.6 north of Borneo; an M 7.0 in  Papua New Guinea and an M 6.5 in Kamchatka, Russia. Much of this activity occurred in southern and eastern New Guinea near the geomagnetic equator or at high latitudes and may have been promoted by the current geomagnetic storm as reported in this summary:

 

"The geomagnetic field saw disturbed conditions today. The AP level was 15.  High latitudes also saw slight disturbance with AP 17. Middle latitudes were disturbed  with AP 13. This continues a moderate geomagnetic storm  which may bring freshly enhanced seismicity to areas near the geomagnetic equator and at high latitudes." (April 2-3, 2023)

 

Another factor promoting this activity in Indonesia was probably the occurrence of Tropical Cyclone Herman south of this area at this time. This summary had noted this possibility in this and previous issues as:

 

"TC HERMAN (17S) continued today in the area south of Sumbawa, Indonesia with winds up to  45 kts.   This storm is expected to track to the southeast and reversing to southwest in the next several days. It could enhance regional seismicity in Central Indonesia from Flores to Sumatra while in the area." (April 1-3, 2023)

 

 

For example, the M 6.7 in February, 1971 was preceded a month earlier by an M 8.1 in New Guinea at 3S 140E. This area - at 103 degrees from Los Angeles, California - has shown several swarms in recent days and could generate a strong earthquake at this time. " (January 25, 2023)

 

...

 

The last earthquake of M>=7.0 within about 200 km of today's epicenter occurred as an M 7.2 on September 8, 2002 and an M 7.0 on July 17, 1998, the only such regional events in the past 35 years." (April 2, 2023)

 

Readers should note the environmental conditions with the event of April 2, 2023 - including a geomagnetic storm, a regional Tropical Cyclone and a full moon were similar to those today.

 

Forecast 161545 had expected today's event was likely within about 100 km around the end of March. This epicenter is at 144 degrees from the M 6.7 in Brazil of January 20, 2024 and may have been promoted by energy from that source.

 

O: 24MAR2024 03:26:37   4.0S  143.0E mb=5.2  EMSC   NEW GUINEA, PAPUA NEW GUINEA

O: 23MAR2024 20:22:06   4.1S  143.1E Mw=6.9  EMSC   NEW GUINEA, PAPUA NEW GUINEA

O: 23MAR2024 20:40:26   4.1S  143.3E mb=5.1  EMSC   NEW GUINEA, PAPUA NEW GUINEA

O: 23MAR2024 20:22:04   4.1S  143.2E MW=6.9  ANSS   AMBUNTI PAPUA NEW GUINEA     

P: 28MAR2024 161545     5.0S  144.0E 4.0-5.4 BAAAA  Papua New Guinea            

 

 

A moderately strong earthquake also occurred today in Indonesia in the Savu Sea with M 5.8-6.1. EMSC reported this earthquake of M 5.8 in Indonesia was felt with intensity up to III in the area(s) of  Indonesia in Kuta, Bali. NEIC reported this earthquake of M 5.3 in Indonesia was felt with intensity up to III in the area(s) of  Indonesia in Pagar Alam. BGM reported it with M 6.1 was felt with intensity III in Kab Flores at Wulanggitang, Sikka at Paga, Lela, Nita, Alok, Nelle, Kewapante, Bola, Waiblama, Alok Barat, Koting, Hewokloang, Kangae; in Ende, Detusoko, Wewaria, Wolowaru, Detukeli, Ndona Timur, Ndori, in Timur at Rindi, Rote Ndao at Lobalain, Ndao Nuse; Sabu Raijua at Hawu Mehara, and in Wajo at Bola, Indonesia. It occurred near local solar noon and was also probably promoted by strong tidal stresses associated with the full moon of March 25 (see above). The last moderate or larger earthquake in the Savu Sea was an M 4.6 on September 3, 2023. The last event with M>=5.8 in this region within about 200 km of today's epicenter was an M 7.3 on December 14, 2021. At the time this summary noted:

 

 

"A major earthquake of M 7.3-7.6 occurred today in the Flores Sea of Central Indonesia. NEIC reported maximum intensity IX (damage) in Timur at Ende Nusa Tenggara; VIII in Maumere, VII in Ruteng and VI in Sulawesi at Kendari and V in Mima; IV in Makasar, and lesser shaking at Mataram, Singkang, Kupang.

BMG gave this event M 7.4 and reported intensity IV in Ruteng, Labuan Bajo, Larantuka, Maumere, Adonara, Lembata; III in Tambolaka, Waikabubak, Waingapu and II-III in Makassar, Takalar and Pangkep, Indonesia. This event occurred within minutes of local solar noon and was probably promoted by tidal stresses which maximize near this hour.

It was followed by a strong aftershock series. A tsunami warning was issued but later withdrawn when no significant increases in sea level were observed. Residents fled from their homes during the earthquake which was strongest in the Sulawesi and Flores areas near the town of Larantuka. At least one person was injured in Manggarai on Flores in the quake and some minor damage was reported in South Sulawesi to a school and several homes on Selayar island. This is the strongest earthquake in the Flores Sea area within about 300 km  since an M 7.9 at great depth on June 17, 1996. A shallow focus event (like today's) occurred southwest of today's epicenter on December 12, 1992." (December 14, 2021)

 

Forecast 161536 had expected today's event was likely in this area around March 24.

 

O: 23MAR2024 14:02:06   9.1S  122.8E ML=4.1  EMSC   SAVU SEA

O: 24MAR2024 03:04:08   9.6S  122.1E MW=5.8  EMSC   SAVU SEA                     

O: 24MAR2024 03:04:08   9.6S  122.1E MW=6.1  BMG    SAVU SEA                     

P: 24MAR2024 161536     8.0S  123.0E 4.0-5.6 ABAAA  Flores Island area         

 

An earthquake of M 4.6 occurred today in the Northern Mid-Atlantic. It was not felt in this remote epicentral area. It was likely  promoted by antipodal energy from Tropical storm Megan which passed over the antipode to this epicenter three days ago and was expected in this summary at the time as:

 

"TC Megan (19P) continued today in the area North of Australia with winds up to 80 kts.  This system is expected to track to the southwest over the next week and to make landfall today. It could help promote enhanced seismicity the area of New Guinea and northern Australia during this period. It is currently nearly antipodal to the northern mid-Atlantic at 16N 43W where some promoted antipodal seismicity may occur in the next several days." (March 20, 2024)

 

Today's event in the northern Mid-Atlantic Ridge area is the largest reported

within about 250 km of this epicenter since an M 4.7 on July 23, 2023 and an M 5.0 on September 27, 2022.

 

Forecast 161569 had expected this event in this area was likely around March 27.

This epicenter is at 104 degrees from the M 7.0 in Xinjiang, China of January 22, 2024 and may have been promoted by energy from that source.

 

O: 23MAR2024 09:00:10  13.2N   45.1W MB=4.6  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 27MAR2024 161569    15.0N   45.0W 4.0-5.6 BBAAA  Mid-Atlantic Ridge         

 

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 23MAR2024 19:57:49  28.1N   54.3E mb=4.4  EMSC   SOUTHERN IRAN

O: 24MAR2024 00:12:21  27.5N   55.6E MB=4.2  EMSC   SOUTHERN IRAN                

P: 28MAR2024 161593    28.0N   56.0E 3.5-5.1 BAAAA  So. Iran/Persian Gulf      

 

O: 23MAR2024 13:32:36  32.3N   82.2E ML=3.5  EMSC   WESTERN XIZANG               

P: 23MAR2024 161657    30.0N   82.0E 3.8-5.7 ACAAA  Xizang                      

 

O: 23MAR2024 19:54:38  36.3N   69.4E MB=4.0  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 22MAR2024 161612    36.0N   69.0E 3.8-5.2 AAAAA  Hindu Kush/Pakistan        

 

INDONESIA AND PHILIPPINES

 

O: 24MAR2024 03:26:37   4.0S  143.0E mb=5.2  EMSC   NEW GUINEA, PAPUA NEW GUINEA

O: 23MAR2024 20:22:06   4.1S  143.1E Mw=6.9  EMSC   NEW GUINEA, PAPUA NEW GUINEA

O: 23MAR2024 20:40:26   4.1S  143.3E mb=5.1  EMSC   NEW GUINEA, PAPUA NEW GUINEA

O: 23MAR2024 20:22:04   4.1S  143.2E MW=6.9  ANSS   AMBUNTI PAPUA NEW GUINEA     

O: 23MAR2024 22:50:06   4.1S  143.1E MB=5.2  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 28MAR2024 161545     5.0S  144.0E 4.0-5.4 BAAAA  Papua New Guinea           

P: 28MAR2024 161545     5.0S  144.0E 4.0-5.4 BAAAA  Papua New Guinea            

 

O: 23MAR2024 14:02:06   9.1S  122.8E ML=4.1  EMSC   SAVU SEA

O: 24MAR2024 03:04:08   9.6S  122.1E MW=5.8  EMSC   SAVU SEA                     

P: 24MAR2024 161536     8.0S  123.0E 4.0-5.6 ABAAA  Flores Island area         

 

O: 23MAR2024 21:20:16   4.2S  134.5E ML=4.4  EMSC   NEAR S COAST OF PAPUA, INDONES

O: 23MAR2024 21:20:16   4.2S  134.5E ML=5.1  BMG    NEAR S COAST OF PAPUA, INDONES

P: 24MAR2024 161551     2.0S  134.0E 4.0-5.5 ACAAA  West Irian, PNG            

P: 30MAR2024 161551     5.0S  134.0E 4.0-5.4 CAAAA  West Irian, PNG            

 

BMG  reported this earthquake of M 5.1 in Irian Jaya, Indonesia was felt with intensity up to III in the area(s) of  Irian Jaya, Indonesia with IV in Kab. Teluk Bintumi at Meyado, Bintuni, Merdey, Aranday, Moskona, Tembuni, Tuhiba, Dataran Beimes, Biscoop, Tomu, Weriagar, Moskona and in Kab. Manokwari at Dataran Isim and Pengunungan Arfak at Didohu, Testega, Indonesia.

 

O: 23MAR2024 23:47:16   0.1S  123.1E MB=4.9  EMSC   SULAWESI, INDONESIA          

P: 26MAR2024 161525     0.0N  125.0E 4.0-5.6 BABAA  Mindanao, Philippines      

 

O: 23MAR2024 13:20:28   4.5S  102.8E MW=5.3  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 23MAR2024 161548     4.0S  103.0E 4.0-5.4 AAAAA  So. of Sumatera            

 

O: 23MAR2024 18:23:05   5.0N  127.3E MB=4.3  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 25MAR2024 161525     5.0N  126.0E 4.0-5.5 AAAAA  Halmahera                  

 

O: 23MAR2024 08:08:45   5.7S  112.5E ML=4.0  EMSC   JAVA SEA

O: 23MAR2024 07:04:18   5.8S  112.3E ML=4.2  EMSC   JAVA SEA

O: 23MAR2024 23:14:58   5.8S  112.3E ML=4.4  EMSC   JAVA SEA                     

P: 13MAR2024 161280     9.0S  113.0E 4.0-5.4 CCAAA  So. of Bali                

 

O: 23MAR2024 07:29:08   7.1S  105.1E MB=5.0  EMSC   JAVA, INDONESIA               

P: 25MAR2024 161546     7.0S  106.0E 4.0-5.4 AAAAA  So. of Java                

 

O: 23MAR2024 18:47:00   8.4N  127.1E ML=4.1  EMSC   PHILIPPINE ISLANDS REGION    

P: 31MAR2024 161525     8.0N  127.0E 4.0-5.4 CAAAA  Halmahera                   

P: 25MAR2024 161520     9.0N  126.0E 4.0-5.4 AAAAA  Central Philippines        

 

O: 24MAR2024 06:22:26   8.8N  126.4E MB=5.2  EMSC   MINDANAO, PHILIPPINES        

P: 25MAR2024 161520     9.0N  126.0E 4.0-5.4 AAAAA  Central Philippines        

 

NEIC reported this earthquake of M 5.2 in Mindanao, Philippines was felt with intensity up to IV in the area(s) of  Mindanao, Philippines in Marihatag.

PHIVOLCS reported intensity IV in Hnatuan and Marihatag, Surigao del Sur; III in City of Bislig and City of Tandag, Surigao del sur; City of Butuan and City of Cabadbaran, Agusan del Norte with lesser shiking in Suriago del Norte and Davao Oriental, Philippines.

 

O: 24MAR2024 00:30:54   9.7S  154.7E MB=5.1  EMSC   D'ENTRECASTEAUX ISLANDS REGION

P: 26MAR2024 161549     9.0S  157.0E 4.0-5.4 AACAA  Solomon Islands            

 

 

CENTRAL AND SOUTH AMERICA

 

O: 24MAR2024 05:46:47   5.5S   79.8W ML=4.1  EMSC   NORTHERN PERU                

P: 29MAR2024 161535     4.0S   80.0W 4.0-5.6 BBAAA  Ecuador                    

 

O: 23MAR2024 13:35:27   8.4S   75.0W ML=4.2  EMSC   CENTRAL PERU                 

P: 22MAR2024 161532     8.0S   74.0W 3.5-5.1 AAAAA  Brazil                     

 

O: 23MAR2024 15:44:35  12.6S   76.6W ML=4.0  EMSC   NEAR COAST OF CENTRAL PERU   

P: 17MAR2024 161471    13.0S   77.0W 4.0-5.8 CAAAA  Central Peru               

 

O: 23MAR2024 22:35:15   6.1S   79.6W MB=4.2  EMSC   NEAR COAST OF NORTHERN PERU  

P: 16MAR2024 161277     6.0S   79.0W 4.0-5.6 CAAAA  No. Peru                   

 

O: 23MAR2024 18:15:48  16.6N  100.5W ML=4.2  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 23MAR2024 161575    17.0N  100.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 23MAR2024 17:17:06  18.6N   67.4W MD=3.0  EMSC   PUERTO RICO REGION

O: 23MAR2024 16:34:39  18.8N   67.5W MD=3.1  EMSC   PUERTO RICO REGION

O: 23MAR2024 10:52:47  18.1N   66.3W MD=3.6  EMSC   PUERTO RICO                  

O: 23MAR2024 20:19:39  18.5N   67.4W MD=3.0  EMSC   PUERTO RICO REGION           

P: 21MAR2024 161580    20.0N   68.0W 3.0-4.5 ABAAA  Bahamas/No. Caribbean      

 

O: 24MAR2024 00:13:48  18.5N   73.4W ML=3.0  EMSC   HAITI REGION                 

P: 24MAR2024 161580    20.0N   73.0W 3.0-4.6 ABAAA  Bahamas/No. Caribbean      

 

O: 23MAR2024 18:34:48  18.9N   65.4W MD=3.2  EMSC   PUERTO RICO REGION           

P: 22MAR2024 161579    20.0N   65.0W 3.0-4.7 ABAAA  Bahamas/No. Caribbean      

 

O: 24MAR2024 02:08:14  21.2S   68.4W MB=4.3  EMSC   ANTOFAGASTA, CHILE           

O: 23MAR2024 17:23:16  22.2S   70.4W ML=4.0  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

P: 24MAR2024 161751    22.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

 

EMSC reported this earthquake of M 5.1 in Northern Chile was felt with intensity up to III in the area(s) of  Northern Chile in Tarapaca at Iquique, Alto Hospicio, Arica.  

A foreshock of M 4.0 was felt with moderate intensity up to III in Tocopilla, Chile.

 

O: 23MAR2024 19:36:15  24.2S   67.2W ML=4.2  EMSC   SALTA, ARGENTINA             

O: 23MAR2024 14:29:25  24.3S   67.2W mb=4.8  EMSC   SALTA, ARGENTINA

P: 24MAR2024 161749    23.0S   66.0W 4.0-5.4 ABAAA  Argentina                  

 

O: 23MAR2024 23:11:52  28.9S   70.5W MB=4.3  EMSC   ATACAMA, CHILE               

P: 23MAR2024 161750    29.0S   70.0W 4.0-5.9 AAAAA  Coast Central Chile        

 

AFRICA AND EUROPE

 

O: 23MAR2024 23:20:43  64.7N   17.4W ML=3.8  EMSC   ICELAND                      

P: 22MAR2024 161725    65.0N   17.0W 3.0-4.5 AAAAA  Iceland area               

 

No significant (M>=5) or unusual earthquakes were reported in Europe today.

 

SOUTHWEST PACIFIC

 

No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.

 

OCEAN RIDGES

 

O: 23MAR2024 09:00:10  13.2N   45.1W MB=4.6  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 27MAR2024 161569    15.0N   45.0W 4.0-5.6 BBAAA  Mid-Atlantic Ridge         

 

O: 23MAR2024 23:20:43  64.7N   17.4W ML=3.8  EMSC   ICELAND                      

P: 22MAR2024 161725    65.0N   17.0W 3.0-4.5 AAAAA  Iceland area               

 

 

ZEALANDIA AND AUSTRALIA REGION

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today.

 

JAPAN AND KURIL ISLANDS

 

O: 23MAR2024 23:30:16  27.3N  140.1E MB=4.2  EMSC   BONIN ISLANDS, JAPAN REGION  

P: 22MAR2024 161581    27.0N  140.0E 4.0-5.4 AAAAA  Bonin Islands              

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 23MAR2024 20:48:24  32.8N  115.8W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 24MAR2024 05:15:12  33.1N  115.9W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 23MAR2024 19:28:48  32.5N  115.3W ML=2.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 24MAR2024 161638    32.9N  115.6W 2.5-4.6 AAAAA  So. California             

 

O: 24MAR2024 06:35:13  30.6N  116.3W ML=3.3  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 25MAR2024 161633    30.2N  116.1W 2.0-3.9 AAAAA  SW U.S.A                    

 

O: 23MAR2024 07:25:14  36.6N  121.3W MD=2.2  EMSC   CENTRAL CALIFORNIA

O: 23MAR2024 22:29:39  36.4N  121.0W MD=2.7  EMSC   CENTRAL CALIFORNIA           

P: 26MAR2024 161602    36.2N  120.8W 2.5-4.5 BAAAA  Central California         

 

O: 23MAR2024 09:11:43  37.1N  116.2W ML=2.3  EMSC   NEVADA                       

P: 23MAR2024 161599    36.7N  117.2W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 23MAR2024 17:01:16  37.2N  119.4W MD=2.5  EMSC   CENTRAL CALIFORNIA           

P: 25MAR2024 161600    37.3N  119.4W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 23MAR2024 22:24:00  38.1N  121.9W MD=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 24MAR2024 161605    37.7N  121.9W 2.5-4.8 AAAAA  Central California         

 

O: 24MAR2024 05:32:49  38.8N  121.4W MD=2.1  EMSC   NORTHERN CALIFORNIA          

P: 24MAR2024 161605    37.7N  121.9W 2.5-4.8 ABAAA  Central California         

 

O: 23MAR2024 21:49:43  38.8N  122.9W MD=2.5  EMSC   NORTHERN CALIFORNIA          

O: 23MAR2024 21:52:59  38.8N  122.9W MD=2.4  EMSC   NORTHERN CALIFORNIA

P: 23MAR2024 161606    38.7N  122.7W 2.5-4.9 AAAAA  Central California         

 

O: 23MAR2024 20:27:59  42.0N  119.7W ML=2.5  EMSC   NEVADA

O: 23MAR2024 15:37:12  41.9N  119.6W ML=3.1  EMSC   NEVADA                       

P: 23MAR2024 161661    41.3N  118.7W 2.5-4.5 AAAAA  California/Nevada area     

 

ALASKA

 

O: 24MAR2024 05:07:46  51.6N  177.9E ML=3.8  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 24MAR2024 161712    52.0N  179.0E 4.0-5.8 AAAAA  Rat Islands                

 

O: 23MAR2024 09:39:20  65.0N  164.2W ML=3.2  EMSC   NORTHERN ALASKA              

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 23MAR2024 09:31:17  44.6N  115.2W ML=2.4  EMSC   SOUTHERN IDAHO               

P: 24MAR2024 161673    44.4N  115.1W 2.0-4.1 AAAAA  Montana/Idaho              

 

O: 23MAR2024 10:51:28  47.7N  120.1W ML=2.2  EMSC   WASHINGTON                   

P: 27MAR2024 161695    47.7N  120.3W 2.0-4.3 BAAAA  Washington state, U.S.     

 

O: 23MAR2024 22:55:22  48.9N  122.6W ML=2.0  EMSC   WASHINGTON                   

P: 26MAR2024 161696    49.0N  123.0W 2.0-4.3 BAAAA  Washington state, U.S.     

 

O: 22MAR2024 22:56:02  52.7N  132.3W MB=3.1  ECAN OF QUEEN CHARLOTTE, BC         

P: 27MAR2024 161703    53.0N  133.0W 3.0-5.1 BAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 23MAR2024 23:52:54  31.4N  103.9W ML=2.0  EMSC   WESTERN TEXAS

O: 23MAR2024 21:49:54  31.6N  104.3W ML=2.0  EMSC   WESTERN TEXAS

O: 23MAR2024 10:43:39  31.7N  104.1W ML=2.0  EMSC   WESTERN TEXAS

O: 23MAR2024 15:25:53  31.4N  103.7W ML=2.0  EMSC   WESTERN TEXAS                

P: 24MAR2024 161636    31.4N  103.8W 2.0-4.3 AAAAA  SW U.S.A                   

 

O: 23MAR2024 21:54:59  32.1N  101.1W ML=2.7  EMSC   WESTERN TEXAS

O: 23MAR2024 07:36:02  32.3N  101.9W ML=3.0  EMSC   WESTERN TEXAS                

P: 24MAR2024 161635    32.4N  101.5W 2.0-4.3 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 23MAR2024 08:24:51  34.3N   97.6W ML=2.4  EMSC   OKLAHOMA                     

P: 21MAR2024 161649    35.0N   97.0W 2.0-3.9 AAAAA  Southern Plains            

 

O: 23MAR2024 16:58:46  36.4N   95.4W ML=2.5  EMSC   OKLAHOMA                     

P: 25MAR2024 161649    35.0N   96.0W 2.0-4.1 ABAAA  Southern Plains            

 

NEIC reported this earthquake of M 2.8 in Oklahoma was felt with intensity up to IV in the area(s) of  Oklahoma in Foyil.

 

O: 24MAR2024 20:31:24  47.6N   70.2W MB=0.7  ECAN OF LA MALBAIE, QC  

O: 24MAR2024 03:02:58  47.7N   70.0W MB=0.8  ECAN OF LA MALBAIE, QC  

O: 25MAR2024 09:43:15  47.5N   70.0W MB=1.6  ECAN OF LA POCATI├¿RE, QC           

P: 25MAR2024 161671    47.0N   69.0W 2.0-4.0 AAAAA  Maine                      

 

O: 24MAR2024 02:41:24  50.3N   63.3W MB=1.0  ECAN OF HAVRE-SAINT-PIERRE, QC      

O: 22MAR2024 14:23:24  48.3N   65.9W MB=2.3  ECAN OF CASCAP├⌐DIA--SAINT-JULES, QC

P: 30MAR2024 161664    49.0N   66.0W 2.0-4.1 CAAAA  E. of Maine                

 

HAWAII

 

O: 23MAR2024 07:45:18  19.2N  155.5W ML=3.2  EMSC   ISLAND OF HAWAII, HAWAII     

P: 25MAR2024 161561    19.3N  155.2W 3.0-4.6 AAAAA  Hawaii                     

 

NEIC reported these earthquakes of M 3.1 and 3.2 in Hawaii were felt with intensity up to IV in the area(s) of  Hawaii in Pahala. 

 

 

STRONG EARTHQUAKE SHAKES JAVA, INDONESIA

 

EARTHQUAKE SUMMARY FOR MARCH 22, 2024

 

The strongest earthquake in the world today was an M 6.4 north of Java, Indonesia. NEIC reported it was felt with intensity up to IV in Paciran, Indonesia. BMG reported it at M 6.5 was felt with intensity VI in Gresik at Sangkapura and IV-V in Kab. Mageland, Boyolali, Klaten, Sukoharjo, Wonogiri, Karanganyar, Sragen, Grobogan, Blora, Rembang, Pati, Kudus, Jepara, Demak and Semarang. This event may have been promoted by the passage of Tropical Cyclone 18S (Neville) to the south of this epicenter. This storm passed directly south of Java at 112E on March 20 and was expected to enhance seismicity in Java as noted in this summary at the time:

 

"TC 18S continued today in the area North of W. Australia with winds up to 40 kts.  This system is expected to track to the southwest over the next week. It could help promote enhanced seismicity the area of Sumatra and Java during this period. It is now expected to track to the west and to dissipate today (March 18). It is currently nearly antipodal to Puerto Rico the Virgin Islands and could help trigger further antipodal seismicity in the northern Caribbean at that time. (March 20, 2024)

 

A second triggering factor in today's event north of Java was a strong geomagnetic storm which maximized at the time of this earthquake. Java lies near the geomagnetic equator and was probably strongly affected by this storm of March 21 which had planetary AP of 27 and high latitude AP 45 maximizing with KP 7 around 12:00 UT. In previous issues of this summary it had been noted as:

 

"The geomagnetic field was the most disturbed today since AP at high latitudes reached 49 on March 3, 2024 with global AP 29 on that date and prior to that when global AP reached 36 on December 17, 2023. It is likely that today's geomagnetic storm will help promote enhanced seismicity near auroral latitudes and the geomagnetic equator especially in Indonesia which was near local solar midnight when the storm commenced." (March 22, 2024)

 

The last earthquake in the region of Java or the Java Sea within about 250 km of today's epicenters with M>=6.4 occurred on April 14, 2023 with M 7.0 at a deep focal depth of M 7.0. A similar deep focus quake (624 km depth) hit the area on September 2, 1992.  Today's event is the largest shallow or intermediate focus earthquake  in this area in at least 35 years. The mainshock was followed by a series of moderate aftershocks.

 

Forecast 161280 had expected today's activity to the south of this was likely

in mid-March, 2024.

 

O: 23MAR2024 00:49:42   5.6S  112.7E ML=4.1  EMSC   JAVA SEA

O: 22MAR2024 09:12:50   5.7S  112.5E ML=4.4  EMSC   JAVA SEA

O: 22MAR2024 10:54:45   5.7S  112.4E ML=4.0  EMSC   JAVA SEA

O: 23MAR2024 01:59:06   5.7S  112.4E ML=4.3  EMSC   JAVA SEA

O: 23MAR2024 06:28:38   5.7S  112.5E ML=4.2  EMSC   JAVA SEA

O: 22MAR2024 10:26:50   5.8S  112.4E ML=4.0  EMSC   JAVA SEA

O: 22MAR2024 10:57:23   5.8S  112.3E mb=4.6  EMSC   JAVA SEA

O: 22MAR2024 16:12:22   5.8S  112.3E ML=4.1  EMSC   JAVA SEA

O: 22MAR2024 21:42:02   5.8S  112.3E ML=4.1  EMSC   JAVA SEA

O: 22MAR2024 08:52:59   5.9S  112.4E Mw=6.4  EMSC   JAVA SEA

O: 22MAR2024 09:19:27   6.0S  112.5E MB=4.5  EMSC   JAVA SEA                     

P: 13MAR2024 161280     9.0S  113.0E 4.0-5.4 CCAAA  So. of Bali                

 

 

A moderate earthquake of M 4.8-5.6 was also widely felt in South Island,  New Zealand today. GEONET reported this event with M 5.6 was felt with weak ntensity in the area southwest of Haast, South Island. 1559 reports of felt intensity came from the area east and north of the epicenter including 739 with weak intensity; 706 light; 99 moderate; 7 strong; 1 severe and 7 extreme. NEIC reported this earthquake of M 4.8 in South Island, New Zealand was felt with intensity up to IV in the area(s) of  South Island, New Zealand in Arthurs Point. The last earthquake reported by NEIC within about 200 km of this epicenter in South Island with M>=5.6 occurred on May 5, 2015 with M 5.6. At the time this summary noted:

 

"The strongest earthquake in the world today was an M 5.6-6.0 in South Island, New Zealand. GeoNet reported this earthquake was felt with severe intensity northwest of Wanaka,   South Island, New Zealand. Felt with strong intensity in Queenstown, Mount Barker, Arrowtown, Bannockburn, and Invercargill, South Island and moderate intensity at Milton, Macandrew Bay, Mataura, Lumsden, Oamaru, Te Anau, Kingston, Alexandra, and most other communities in South Island and as far north as Wellington, Newtown, Tikokino, and Inglewood, North Island. NEIC gave the event M 5.6 and reported intensity II in Christchurch and III in Invercargill, Southland, New Zealand. The last earthquake of M>=6.0 in southern South Island, New Zealand occurred as an M 5.8 on December 7, 2001 with M 5.8, the only such earthquake within 100 km of today's epicenter of M>=5.6 in the past 25 years. ...

 

This activity was associated with the full moon alignment and was probably

promoted by tidal effects.” (May 5, 2015)

 

 

Forecast 161777 had expected today's event within about 50 km was likely

around March 22.

 

O: 22MAR2024 10:36:34  44.4S  168.0E MW=4.8  EMSC   SOUTH ISLAND OF NEW ZEALAND  

O: 22MAR2024 10:36:34  44.4S  168.0E MS=5.6  GEONET South Island, New Zealand

P: 22MAR2024 161777    44.0S  168.0E 3.0-4.9 AAAAA  So. Island, N.Z.           

 

A series of moderate earthquakes (M 4.5, 4.4, 4.6) also occurred today in the Red Sea east of Sudan. An M 4.5 hit this area on February 15, 2024 but the last regional event within the Red Sea with M>=4.6 was an M 4.9 in a similar series on January 9, 2023.  This activity is near the geomagnetic equator and may have been promoted by the strong geomagnetic storm of March 21. Forecast 161578 had expected today's activity was likely within about 200 km around March 25.

 

O: 22MAR2024 23:10:34  17.2N   40.5E MB=4.5  EMSC   RED SEA                      

O: 22MAR2024 23:57:26  17.2N   40.5E mb=4.6  EMSC   RED SEA

O: 23MAR2024 01:26:55  17.4N   40.5E mb=4.4  EMSC   RED SEA

P: 25MAR2024 161578    19.0N   39.0E 3.0-5.4 BBBAA  Sudan                      

 

The strongest earthquake in the U.S. or Canada today was an M 4.1 in the Unimak Island region of Alaska. This appears to be an aftershock of an M 4.6 which hit six hours earlier in the Unimak Island area. Forecast 161717 had expected today's event within about 100 km was likely around March 21.

 

O: 22MAR2024 11:51:34  53.4N  163.7W MB=4.1  EMSC   UNIMAK ISLAND REGION, ALASKA 

P: 21MAR2024 161717    52.5N  163.7W 3.5-5.1 AAAAA  Unimak Islands, Aleutians  

 

An earthquake of M 4.1 also occurred in Alberta, Canada today. It was not reported felt in this remote area. It appears to be at the same epicenter as an M 4.0 on January 31, 2024. The last earthquake of larger magnitude than M 4.1

in Alberta was an M 5.0 on March 16, 2023. At the time this summary noted:

 

 

"The strongest earthquakes in the U.S. or Canada today occurred as an M 4.5, 4.8 and 5.1 in Alberta, Canada. These were reported by NEIC with intensity V in Alberta in Grimshaw and IV in Peace River with II-III shaking in Falher, High Prairie, Fairview, Valleyview, Spirit River, Slave Lake, Fox Creek, Grand Prairie, Barrhead and Athabasca. These events are apparently aftershocks of an M 5.3 which hit the same epicenter on November 30, 2022. At the time this summary noted in this regard:

 

"The largest earthquake in the U.S. or Canada today was an M 5.3 in Alberta, Canada. The mainshock was felt widely in Alberta with maximum intensity IV in Peace River, Falher, High Prairie, Manning, Fairview, and III in Grimshaw, Valleyview, Slave Lake, Spirit River and Sexsmith. It was followed by an aftershock of M 4.5 which was reported felt with intensity IV in Alberta at Slave Lake, Whitecourt and II-III in Peace River, High Prairie, Fairview, Grande Prairie, Athabasca, High Leven and Wood Buffalo and in Dawson Creek, British Columbia. Foreshocks of M 4.6 and 4.9 to the M 5.3 was felt in the same area as the mainshock with maximum intensity IV in Alberta at Peace River, High Prairie, Spirit River, Sexsmith, Slave Lake and in Dawson, BC. This activity is a continuation of events which hit the area on November 22-24, 2022. That included an M 4.5 which previous to the M 5.3 today was the largest earthquake in the area in more than 35 years as noted in this summary at the time:

 

"The strongest earthquake in the U.S. or Canada today was an M 4.5 in Alberta,

Canada. This event occurred within minutes of local solar midnight and was probably promoted by strong tidal stresses with today's new moon. These maximize near local sola midnight. The mainshock was followed by an M 3.8 aftershock near Reno, Alberta. This is the strongest earthquake within about 200 km of this epicenter in Alberta, Canada in at least 35 years. Smaller quakes hit about 200 km to the south of this as an M 4.2 on January 12, 2016 and an M 4.0 on June 13, 2015." (November 30, 2022, March 17, 2023)

 

Forecast 161699 had expected today's event was likely in Alberta to the northwest around March 25, 2024.

 

O: 22MAR2024 22:26:30  54.3N  117.4W ML=4.1  EMSC   ALBERTA, CANADA               

P: 25MAR2024 161699    56.0N  120.0W 2.0-4.1 BBBAA  Alberta                    

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O: 23MAR2024 03:45:30  41.1N   78.5E mb=4.4  EMSC   SOUTHERN XINJIANG, CHINA

O: 22MAR2024 21:03:04  41.2N   78.7E Mw=4.1  EMSC   SOUTHERN XINJIANG, CHINA

O: 23MAR2024 01:41:14  41.2N   78.5E MB=4.9  EMSC   SOUTHERN XINJIANG, CHINA     

P: 25MAR2024 161670    41.0N   78.0E 4.0-5.6 AAAAA  Kirgizstan/Xinjiang        

 

NEIC reported this earthquake of M 4.9 in Kyrgyzstan was felt with intensity up to III in the area(s) of  Kyrgyzstan in Kyzyl-Suu.

 

INDONESIA AND PHILIPPINES

 

O: 22MAR2024 11:39:50   0.5S   99.2E ML=4.4  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 23MAR2024 161528     0.0N   99.0E 4.0-5.4 AAAAA  So. Sumatera               

 

O: 23MAR2024 05:05:12   4.7S  102.0E MB=4.6  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 23MAR2024 161548     4.0S  103.0E 4.0-5.4 AAAAA  So. of Sumatera            

 

NEIC reported this earthquake of M 5.3 in Southern Sumatra was felt with intensity up to III in the area(s) of  Southern Sumatra in Pagar Alam, Indonesia.

BMG reported intensity V in GEOFON Station, Manna, Sumatra; IV in Sungai Are, Ogan Komering, Ulu; Bengkulu at Seginim, Pino, Manna, Kota, Manna, Kedurang Ilir, Ulu Manna, Bunga Mas, Pasar Manna; in Kab. Karu at Lungkang Kule, Guci Hilir; and in Seluma at Talo, Semidang Alas Maras, Seluma, Talos Kecil and Ilir Talo. Lesser shaking was noted in Kab. Ogan Komering, Muara Enim, Lahat, Musi Rawas, Banyuasin, Timor, Komering among others.

 

O: 23MAR2024 01:53:49   6.1N  124.0E ML=4.3  EMSC   MORO GULF, MINDANAO, PHILIPPIN

P: 31MAR2024 161520     7.0N  124.0E 4.0-5.4 CAAAA  Central Philippines        

 

O: 22MAR2024 14:51:42   7.4S  126.5E ML=4.1  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 24MAR2024 161531     7.0S  127.0E 4.0-5.4 AAAAA  Banda Sea                  

 

O: 23MAR2024 00:49:42   5.6S  112.7E ML=4.1  EMSC   JAVA SEA

O: 22MAR2024 09:12:50   5.7S  112.5E ML=4.4  EMSC   JAVA SEA

O: 22MAR2024 10:54:45   5.7S  112.4E ML=4.0  EMSC   JAVA SEA

O: 23MAR2024 01:59:06   5.7S  112.4E ML=4.3  EMSC   JAVA SEA

O: 23MAR2024 06:28:38   5.7S  112.5E ML=4.2  EMSC   JAVA SEA

O: 22MAR2024 10:26:50   5.8S  112.4E ML=4.0  EMSC   JAVA SEA

O: 22MAR2024 10:57:23   5.8S  112.3E mb=4.6  EMSC   JAVA SEA

O: 22MAR2024 16:12:22   5.8S  112.3E ML=4.1  EMSC   JAVA SEA

O: 22MAR2024 21:42:02   5.8S  112.3E ML=4.1  EMSC   JAVA SEA

O: 22MAR2024 08:52:59   5.9S  112.4E Mw=6.4  EMSC   JAVA SEA

O: 22MAR2024 09:19:27   6.0S  112.5E MB=4.5  EMSC   JAVA SEA                     

P: 13MAR2024 161280     9.0S  113.0E 4.0-5.4 CCAAA  So. of Bali                

 

CENTRAL AND SOUTH AMERICA

 

O: 22MAR2024 08:57:00  13.7N   92.6W ML=4.0  EMSC   OFFSHORE GUATEMALA           

P: 26MAR2024 161560    15.0N   92.0W 3.5-5.2 BBAAA  Guatemala                  

 

O: 22MAR2024 21:19:43  13.9N   92.2W ML=4.2  EMSC   OFFSHORE GUATEMALA           

P: 25MAR2024 161559    13.0N   91.0W 3.5-5.4 BABAA  Guatemala                  

 

O: 22MAR2024 10:16:09  15.0S   75.9W ML=4.4  EMSC   NEAR COAST OF CENTRAL PERU   

P: 23MAR2024 161736    15.0S   76.0W 4.0-5.6 AAAAA  Central Peru               

 

O: 22MAR2024 17:50:53  15.6N   94.8W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 21MAR2024 161556    15.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 22MAR2024 19:01:50  15.7N   93.9W ML=4.3  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 22MAR2024 09:05:30  16.6N   93.9W ML=4.3  EMSC   CHIAPAS, MEXICO              

P: 24MAR2024 161556    16.0N   94.0W 3.5-5.4 AAAAA  Chiapas, Mexico            

 

O: 23MAR2024 02:40:20  16.9N  100.5W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO

O: 22MAR2024 20:13:33  16.9N  100.0W ML=4.4  EMSC   GUERRERO, MEXICO             

P: 23MAR2024 161575    17.0N  100.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 22MAR2024 07:14:58  18.2N  103.8W ML=4.0  EMSC   OFFSHORE MICHOACAN, MEXICO   

P: 22MAR2024 161568    19.0N  104.0W 3.5-5.1 AAAAA  Michoacan, Mexico          

 

O: 23MAR2024 05:42:35  18.3N   65.4W MD=3.2  EMSC   PUERTO RICO REGION           

P: 22MAR2024 161579    20.0N   65.0W 3.0-4.7 ABAAA  Bahamas/No. Caribbean      

 

O: 22MAR2024 20:02:58  18.3N   74.3W ML=3.2  EMSC   HAITI REGION                 

P: 24MAR2024 161580    20.0N   73.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

O: 22MAR2024 23:51:01  18.4N   68.9W ML=3.1  EMSC   DOMINICAN REPUBLIC

O: 22MAR2024 19:43:28  18.5N   69.2W ML=3.2  EMSC   DOMINICAN REPUBLIC

O: 22MAR2024 22:25:21  18.5N   70.4W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 21MAR2024 161576    19.0N   71.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 22MAR2024 18:52:41  19.3N   64.7W MD=3.8  EMSC   VIRGIN ISLANDS REGION        

P: 22MAR2024 161579    20.0N   65.0W 3.0-4.7 AAAAA  Bahamas/No. Caribbean      

 

O: 22MAR2024 13:39:23  33.8S   72.5W MB=4.2  EMSC   OFFSHORE VALPARAISO, CHILE   

P: 25MAR2024 161764    34.0S   73.0W 4.0-5.5 BAAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O: 23MAR2024 04:56:54  35.3N   27.7E ML=4.1  EMSC   DODECANESE ISLANDS, GREECE   

P: 18MAR2024 161330    35.0N   26.0E 3.0-4.5 BABAA  Aegean Sea                 

 

O: 22MAR2024 23:10:34  17.2N   40.5E MB=4.5  EMSC   RED SEA                      

O: 22MAR2024 23:57:26  17.2N   40.5E mb=4.6  EMSC   RED SEA

O: 23MAR2024 01:26:55  17.4N   40.5E mb=4.4  EMSC   RED SEA

P: 25MAR2024 161578    19.0N   39.0E 3.0-5.4 BBBAA  Sudan                       

 

O: 22MAR2024 10:24:19  42.8N   45.7E ML=4.1  EMSC   CAUCASUS REGION, RUSSIA      

P: 23MAR2024 161662    40.0N   44.0E 3.5-4.9 ACBAA  Caucasus/Caspian Sea       

 

SOUTHWEST PACIFIC

 

O: 23MAR2024 04:18:42  16.1S  168.1E MB=4.9  EMSC   VANUATU                       

P: 28MAR2024 161748    17.0S  168.0E 4.0-5.4 BAAAA  Vanuatu Islands            

 

No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.

 

OCEAN RIDGES

 

O: 23MAR2024 03:32:24  27.1S  112.9W MB=4.9  EMSC   EASTER ISLAND REGION         

P: 25MAR2024 161755    24.0S  112.0W 4.0-5.6 ACAAA  So. East Pacific Rise      

 

O: 22MAR2024 17:31:03  28.5N   43.9W MB=4.6  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 27MAR2024 161586    27.0N   44.0W 4.0-5.4 BBAAA  Mid-Atlantic Ridge         

 

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 22MAR2024 11:11:18  29.8S  177.7W MB=4.8  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P: 18MAR2024 161503    30.0S  179.0W 4.0-5.7 BAAAA  No. Kermadec Islands       

P: 28MAR2024 161768    30.0S  179.0W 4.0-5.6 CAAAA  No. Kermadec Islands       

 

O: 22MAR2024 10:33:03  33.5S  178.7W MB=4.7  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 24MAR2024 161772    33.0S  178.0W 4.0-5.5 AAAAA  So. Kermadec Islands       

 

O: 22MAR2024 10:36:34  44.4S  168.0E MW=4.8  EMSC   SOUTH ISLAND OF NEW ZEALAND  

O: 22MAR2024 10:36:34  44.4S  168.0E MS=5.6  GEONET South Island, New Zealand

P: 22MAR2024 161777    44.0S  168.0E 3.0-4.9 AAAAA  So. Island, N.Z.           

 

NEIC reported this earthquake of M 4.8 in South Island, New Zealand was felt with intensity up to IV in the area(s) of  South Island, New Zealand in Arthurs Point.

GEONET reported this event with M 5.6 was felt with weak intensity in the area southwest of Haast, South Island. 1559 reports of felt intensity came from the area east and north of the epicenter including 739 with weak intensity; 706 light; 99 moderate; 7 strong; 1 severe and 7 extreme.

 

JAPAN AND KURIL ISLANDS

 

O: 22MAR2024 23:31:50  35.5N  136.8E MB=4.5  EMSC   WESTERN HONSHU, JAPAN        

P: 21MAR2024 161623    35.0N  137.0E 3.5-5.3 AAAAA  No. Honshu, Japan          

 

NEIC reported this earthquake of M 4.5 in Central Honshu, Japan was felt with intensity up to IV in the area(s) of  Central Honshu, Japan in Gifu-shi.

 

O: 22MAR2024 17:56:03  37.5N  137.5E MB=4.3  EMSC   NEAR WEST COAST OF HONSHU, JAP

P: 21MAR2024 161624    37.0N  138.0E 3.5-5.0 AAAAA  No. Honshu, Japan          

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 22MAR2024 14:55:38  32.8N  115.5W ML=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 24MAR2024 161638    32.9N  115.6W 2.5-4.6 AAAAA  So. California             

 

O: 22MAR2024 07:42:43  31.1N  115.5W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 25MAR2024 161633    30.2N  116.1W 2.0-3.9 BAAAA  SW U.S.A                   

 

O: 22MAR2024 22:32:25  32.8N  117.4W ML=2.1  EMSC   CHANNEL ISLANDS REG., CALIFORN

P: 21MAR2024 161637    32.0N  117.4W 2.5-4.8 AAAAA  So. California              

P: 23MAR2024 161639    33.9N  116.9W 2.5-4.4 AAAAA  So. California             

 

O: 23MAR2024 02:58:18  34.6N  118.9W ML=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 24MAR2024 161642    34.7N  119.0W 2.5-4.4 AAAAA  So. California             

 

O: 23MAR2024 06:34:48  37.2N  121.5W MD=2.4  EMSC   NORTHERN CALIFORNIA          

P: 25MAR2024 161604    36.9N  121.7W 2.5-4.4 AAAAA  Central California         

 

O: 22MAR2024 23:00:56  37.3N  115.7W ML=2.2  EMSC   NEVADA                       

P: 21MAR2024 161618    37.3N  114.9W 2.5-4.4 AAAAA  Nevada area                

 

O: 22MAR2024 16:36:44  37.9N  122.0W MD=2.6  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 24MAR2024 161605    37.7N  121.9W 2.5-4.8 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in San Francisco, California was felt with intensity up to IV in the area(s) of  San Francisco, California in Pleasant Hill.

 

O: 23MAR2024 05:34:49  39.6N  122.3W MD=2.2  EMSC   NORTHERN CALIFORNIA          

P: 24MAR2024 161607    39.4N  123.3W 2.5-4.9 AAAAA  Central California         

 

O: 22MAR2024 09:11:43  40.2N  121.0W MD=2.0  EMSC   NORTHERN CALIFORNIA          

P: 25MAR2024 161681    40.3N  121.2W 2.5-4.9 BAAAA  Northern California        

 

O: 23MAR2024 04:18:15  40.9N  123.3W MD=2.1  EMSC   NORTHERN CALIFORNIA          

P: 17MAR2024 161418    40.0N  123.0W 2.5-4.9 CAAAA  Northern California        

 

O: 22MAR2024 23:07:39  41.0N  120.1W MD=2.4  EMSC   NORTHERN CALIFORNIA          

P: 19MAR2024 161418    40.3N  121.2W 2.5-5.0 BAAAA  Northern California        

 

NEIC reported this earthquake of M 2.6 in Northern Nevada was felt with intensity up to III in the area(s) of  Northern Nevada in Reederville.

 

ALASKA

 

O: 22MAR2024 13:36:30  50.2N  180.0E ML=3.8  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 24MAR2024 161712    52.0N  179.0E 4.0-5.8 ABAAA  Rat Islands                

 

O: 22MAR2024 11:51:34  53.4N  163.7W MB=4.1  EMSC   UNIMAK ISLAND REGION, ALASKA 

P: 21MAR2024 161717    52.5N  163.7W 3.5-5.1 AAAAA  Unimak Islands, Aleutians  

 

O: 22MAR2024 09:42:46  56.5N  156.7W ML=3.0  EMSC   ALASKA PENINSULA             

P: 24MAR2024 161698    54.7N  156.9W 3.5-4.9 ABAAA  Alaska Peninsula           

 

O: 22MAR2024 18:30:12  62.0N  150.7W ML=3.1  EMSC   SOUTHERN ALASKA              

P: 22MAR2024 161722    61.3N  152.3W 3.2-4.9 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 22MAR2024 09:14:58  47.7N  120.2W ML=2.0  EMSC   WASHINGTON                   

P: 27MAR2024 161695    47.7N  120.3W 2.0-4.3 BAAAA  Washington state, U.S.     

 

O: 22MAR2024 22:26:30  54.3N  117.4W ML=4.1  EMSC   ALBERTA, CANADA              

P: 25MAR2024 161699    56.0N  120.0W 2.0-4.1 BBBAA  Alberta                    

 

No events of M>=2 were located in the northwestern U.S. or western Canada today.

 

ROCKY MOUNTAINS REGION

 

O: 23MAR2024 02:47:18  31.6N  103.9W ML=2.2  EMSC   WESTERN TEXAS

O: 23MAR2024 02:52:44  31.6N  103.9W ML=2.0  EMSC   WESTERN TEXAS

O: 23MAR2024 03:02:20  31.6N  103.9W ML=2.1  EMSC   WESTERN TEXAS

O: 22MAR2024 13:11:39  31.7N  104.5W ML=2.0  EMSC   WESTERN TEXAS

O: 22MAR2024 10:55:25  32.6N  104.7W ML=2.5  EMSC   NEW MEXICO

O: 22MAR2024 12:00:40  31.5N  104.0W ML=2.0  EMSC   WESTERN TEXAS                

P: 24MAR2024 161636    31.4N  103.8W 2.0-4.3 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 22MAR2024 14:57:38  35.7N   97.4W ML=2.0  EMSC   OKLAHOMA

O: 23MAR2024 06:40:20  36.4N   97.0W ML=2.6  EMSC   OKLAHOMA                     

P: 21MAR2024 161649    35.0N   97.0W 2.0-3.9 BAAAA  Southern Plains            

 

NEIC reported this earthquake of M  2.9 in Oklahoma was felt with intensity up to IV in the area(s) of  Oklahoma at Sequoyah.

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.

 

LIGHT QUAKE RESUMES SEISMIC SERIES IN SOUTH CAROLINA

 

EARTHQUAKE SUMMARY FOR MARCH 9, 2024

 

A M 2.8 earthquake was lightly felt in South Carolina today. NEIC reported this earthquake of M 2.8 in South Carolina was felt with intensity up to IV in the area(s) of  South Carolina in Elgin. This continues a series in the area which continued throughout much of the year 2023. It is the strongest earthquake in this area in more than a year - since an M 2.9 on February 18, 2023. This series began in December, 2021 with an M 3.6. At the time this summary noted in this regard:

 

 

"A series of earthquakes also occurred today in South Carolina. The largest of these was an M 3.3-3.6 (EMSC). NEIC reported the mainshock at M 3.3 was felt with intensity IV in South Carolina with intensity IV in Lugoff and Elgin and III in Columbia, Camden, Rembert, Ridgeway, Blythewood. An aftershock of M 2.5 was felt in South Carolina at Lugoff, Elgin, Columbia, Camden, Ridgeway, Blythewood, and other areas of South Carolina.

 

The only earthquake of M>3.6 in South Carolina in the past 10 years was an M 4.1 on February 15, 2014 and prior to that an M 4.4 on November 11, 2002 and August 21, 1992 also with M 4.4." (December 28, 2021)

 

Forecast 161123 had expected today's event in South Carolina was likely within about 50 km around March 9, 2024.

 

O:  9MAR2024 14:27:02  34.1N   80.7W ML=2.8  EMSC   SOUTH CAROLINA               

P:  9MAR2024 161123    34.0N   80.0W 2.0-4.0 AAAAA  Southeast U.S.             

 

The strongest earthquake in the world today was an M 5.4 in the area of Fiji. The last earthquake of equal or larger magnitude in Fiji was an M 5.8 on March 2, 2024. Today's earthquake occurred within minutes of local solar midnight and was probably promoted by strong tidal stresses which maximize near this  hour and which are associated with the new moon of March 10 as noted in this and previous summaries:

 

 

"The new moon will arrive at 09:00 on March 10, 2024.  Longitudes at local solar noon are near 45 East while those at local solar midnight are near 135 West longitude. These include Hawaii and areas of eastern Alaska and western Canada and to a lesser extent areas off the coast of Oregon and California while in the east they include Eastern Turkey where an M 7.7 hit on February 6, 2023 as well as Greece and areas off southern Africa. These and surrounding areas are the most likely to see tidally enhanced seismicity at this time. A moderate to large aftershock is possible in Turkey at this time." (March 5-9, 2024)

 

The M 5.8 on March 2 occurred within minutes of local solar noon as noted

at the time in this summary:

 

 

"An earthquake of M 5.8 also occurred in the region of Fiji today. It was not reported felt in this area. This event occurred near local solar noon and may have been promoted by strong tidal stresses which maximize near this hour and perhaps by stresses associated with the full moon" (March 2, 2024)

 

Forecast 161221 had expected today's event within about 100 km was likely around March 8, 2024.

 

O:  9MAR2024 12:01:08  18.0S  178.4W MB=5.4  EMSC   FIJI REGION                  

P:  8MAR2024 161221    19.0S  178.0W 4.0-5.6 AAAAA  Tonga Islands              

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

ASIA

 

O:  9MAR2024 12:35:44  41.2N   78.8E MB=4.5  EMSC   SOUTHERN XINJIANG, CHINA     

P:  9MAR2024 161144    40.0N   78.0E 4.0-5.6 ABAAA  Kirgizstan/Xinjiang        

P: 13MAR2024 161406    42.0N   79.0E 4.0-5.4 BAAAA  Kirgizstan/Xinjiang        

 

No significant (M>=5) or unusual earthquakes were reported in Asia today.

 

INDONESIA AND PHILIPPINES

 

O: 10MAR2024 04:05:03   7.3S  129.2E MB=5.0  EMSC   KEPULAUAN BABAR, INDONESIA   

P:  5MAR2024 160997     7.0S  129.0E 4.0-5.5 BAAAA  Banda Sea                  

 

O:  9MAR2024 10:25:53  19.9N  145.9E MB=4.7  EMSC   MAUG ISLANDS REG, N. MARIANA 

P:  6MAR2024 161070    20.0N  146.0E 4.0-5.4 BAAAA  Volcano Islands            

 

CENTRAL AND SOUTH AMERICA

 

O:  9MAR2024 19:52:25   9.2N   78.5W ML=4.3  EMSC   PANAMA                       

P: 12MAR2024 161259     7.0N   78.0W 4.0-5.4 BCAAA  Colombia                   

 

O:  9MAR2024 09:00:14  11.0N   86.9W ML=4.1  EMSC   NEAR COAST OF NICARAGUA      

P:  7MAR2024 161043    11.0N   86.0W 3.5-5.1 AAAAA  Nicaragua                  

 

O: 09MAR2024 20:31:39  14.5N   93.1W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O:  9MAR2024 16:40:27  15.4N   95.7W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P:  7MAR2024 161030    17.0N   95.0W 3.5-5.3 ABAAA  Chiapas, Mexico            

 

O: 10MAR2024 01:40:32  17.6S   73.3W ML=4.0  EMSC   OFF COAST OF SOUTHERN PERU   

P:  9MAR2024 161218    18.0S   72.0W 4.0-5.8 AABAA  So. Peru/Bolivia           

 

O:  9MAR2024 13:21:53  19.4N   70.1W ML=4.6  EMSC   DOMINICAN REPUBLIC           

P:  7MAR2024 161048    18.0N   69.0W 3.4-5.3 ABAAA  Puerto Rico                

 

O: 09MAR2024 07:46:05  18.8N   67.2W MD=3.4  EMSC   PUERTO RICO REGION

O: 09MAR2024 11:15:37  18.8N   67.4W MD=3.1  EMSC   PUERTO RICO REGION

O:  9MAR2024 18:05:19  19.6N   66.8W MD=3.6  EMSC   PUERTO RICO REGION           

P:  4MAR2024 161048    19.0N   67.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O:  9MAR2024 15:51:33  20.2N   73.3W ML=3.0  EMSC   HAITI REGION                 

P:  7MAR2024 161053    20.0N   73.0W 3.0-4.4 AAAAA  Bahamas/No. Caribbean      

 

O: 09MAR2024 08:57:18  21.7S   68.5W mb=4.4  EMSC   ANTOFAGASTA, CHILE

O: 09MAR2024 19:58:53  22.4S   68.8W mb=4.9  EMSC   ANTOFAGASTA, CHILE

O: 09MAR2024 09:22:28  23.9S   69.1W mb=4.5  EMSC   ANTOFAGASTA, CHILE

O:  9MAR2024 16:43:10  20.2S   69.3W MB=4.3  EMSC   TARAPACA, CHILE              

P:  5MAR2024 161218    18.0S   69.0W 4.0-5.5 BCAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 4.4 in Tarapaca, Chile was felt with intensity up to III in the area(s) of  Tarapaca, Chile in Tirana.

 

O:  9MAR2024 10:28:47  24.0N  108.9W ML=3.9  EMSC   GULF OF CALIFORNIA           

P:  4MAR2024 161055    24.0N  109.0W 3.5-5.1 BAAAA  Gulf of California         

 

O:  9MAR2024 18:32:18  26.2N  110.7W ML=3.9  EMSC   GULF OF CALIFORNIA           

O: 09MAR2024 18:26:06  26.2N  110.8W ML=3.9  EMSC   GULF OF CALIFORNIA

P:  4MAR2024 161056    26.0N  110.0W 3.5-5.1 BAAAA  Gulf of California         

 

O:  9MAR2024 19:23:11  28.0N  112.1W ML=3.9  EMSC   GULF OF CALIFORNIA           

P:  3MAR2024 161056    28.0N  112.0W 3.5-5.4 CAAAA  Gulf of California         

 

O:  9MAR2024 19:23:13  33.3S   72.9W MB=4.9  EMSC   OFF COAST OF VALPARAISO, CHILE

P:  4MAR2024 161237    33.0S   72.0W 4.0-5.9 BAAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

 

O:  9MAR2024 13:54:32  34.5N    4.4E MB=4.3  EMSC   NORTHERN ALGERIA             

P: 16MAR2024 161391    37.0N    5.0E 3.0-5.0 CCAAA  Western Mediterranean      

 

O:  9MAR2024 15:24:39  63.4N   23.9W ML=2.9  EMSC   ICELAND REGION               

P:  4MAR2024 161201    63.0N   23.0W 3.0-4.6 BAAAA  Iceland area               

 

SOUTHWEST PACIFIC

 

O:  9MAR2024 12:01:08  18.0S  178.4W MB=5.4  EMSC   FIJI REGION                  

P:  8MAR2024 161221    19.0S  178.0W 4.0-5.6 AAAAA  Tonga Islands              

 

O:  9MAR2024 20:37:28  24.4S  179.8E MB=4.3  EMSC   SOUTH OF FIJI ISLANDS         

P:  8MAR2024 161233    23.0S  179.0E 4.0-5.9 ABAAA  Tonga/Fiji                 

 

 

OCEAN RIDGES

 

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  9MAR2024 21:43:02  19.8S  134.1E ML=2.8  EMSC   NORTHERN TERRITORY, AUSTRALIA

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today.

 

JAPAN AND KURIL ISLANDS

 

No earthquakes of M>=4 were located in Japan or the Kuril Islands today.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  9MAR2024 09:11:01  30.3N  115.8W ML=3.5  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

O:  9MAR2024 18:27:56  31.7N  114.5W ML=3.5  EMSC   GULF OF CALIFORNIA           

P: 11MAR2024 161364    30.2N  114.1W 2.0-4.1 ABAAA  SW U.S.A                    

 

O:  9MAR2024 10:56:36  32.0N  115.0W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO      

P:  7MAR2024 161108    32.5N  115.7W 2.5-4.4 AAAAA  So. California             

 

O:  9MAR2024 09:21:06  34.0N  116.3W ML=2.0  EMSC   SOUTHERN CALIFORNIA           

P:  9MAR2024 161110    33.7N  116.1W 2.5-4.6 AAAAA  So. California             

 

O: 10MAR2024 06:31:48  36.7N  121.3W MD=2.2  EMSC   CENTRAL CALIFORNIA           

P: 12MAR2024 161336    36.4N  121.0W 2.5-4.6 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in Central California was felt with intensity up to III in the area(s) of  Central California in Independence.

 

O:  9MAR2024 08:05:41  36.8N  118.2W ML=2.4  EMSC   CENTRAL CALIFORNIA           

P: 12MAR2024 161331    36.3N  118.1W 2.5-4.8 BAAAA  California/Nevada area     

 

O:  9MAR2024 13:30:18  38.8N  122.8W MD=2.4  EMSC   NORTHERN CALIFORNIA          

P:  9MAR2024 161079    38.7N  122.7W 2.5-4.6 AAAAA  Central California         

 

O: 10MAR2024 04:44:43  39.4N  119.7W ML=2.0  EMSC   NEVADA                       

P:  8MAR2024 161077    38.7N  119.7W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 10MAR2024 01:00:04  40.3N  124.4W ML=3.2  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  9MAR2024 161158    40.7N  124.6W 2.5-4.8 AAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.5 off Northern California  was felt with intensity up to III in the area(s) of  Northern California in Petrolia.

 

ALASKA

 

O: 10MAR2024 04:19:03  53.3N  160.2W ML=3.0  EMSC   SOUTH OF ALASKA              

P:  7MAR2024 161192    54.5N  161.8W 3.5-5.1 BBAAA  Unimak Islands, Aleutians  

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

No events of M>=2 were located in the northwestern U.S. or western Canada today.

 

ROCKY MOUNTAINS REGION

 

O: 09MAR2024 18:45:49  31.6N  104.2W ML=2.4  EMSC   WESTERN TEXAS

O: 10MAR2024 04:00:25  31.7N  104.6W ML=2.2  EMSC   WESTERN TEXAS                

P: 14MAR2024 161365    31.6N  103.6W 2.0-4.3 BAAAA  SW U.S.A                   

 

O:  9MAR2024 13:18:13  44.4N  114.8W ML=2.5  EMSC   SOUTHERN IDAHO               

P:  9MAR2024 161148    44.4N  114.1W 2.0-3.9 AAAAA  Montana/Idaho              

 

O: 10MAR2024 05:50:34  44.4N  116.1W ML=3.3  EMSC   SOUTHERN IDAHO               

P: 15MAR2024 161409    44.5N  116.2W 2.0-4.0 BAAAA  Montana/Idaho              

 

NEIC reported this earthquake of M 3.3 in Southern Idaho was felt with intensity up to IV in the area(s) of  Southern Idaho in Smiths Ferry.

 

O: 10MAR2024 04:50:28  44.8N  111.1W ML=2.5  EMSC   WESTERN MONTANA              

P: 12MAR2024 161432    44.8N  110.9W 2.0-3.9 AAAAA  Yellowstone/Wyoming        

 

NEIC reported this earthquake of M 2.6 in Yellowstone National Park, Montana was felt with intensity up to III in the area(s) of  Yellowstone National Park, Montana in Hebgen Lake Estates.

 

EASTERN U.S./CANADA

 

O: 09MAR2024 20:33:28  35.1N   98.0W ML=2.1  EMSC   OKLAHOMA

O: 09MAR2024 11:35:23  35.7N   97.4W ML=2.0  EMSC   OKLAHOMA

O:  9MAR2024 15:36:38  35.1N   98.0W ML=2.4  EMSC   OKLAHOMA                      

P:  8MAR2024 161125    35.0N   96.0W 2.0-4.1 AABAA  Southern Plains            

 

O:  9MAR2024 14:27:02  34.1N   80.7W ML=2.8  EMSC   SOUTH CAROLINA               

P:  9MAR2024 161123    34.0N   80.0W 2.0-4.0 AAAAA  Southeast U.S.             

 

O: 08MAR2024 14:32:57  47.5N   70.0W MB=1.4  ECAN OF SAINT-PASCAL, QC   

O: 08MAR2024 11:18:42  47.6N   69.9W MB=0.9  ECAN OF KAMOURASKA, QC   

O:  7MAR2024 13:23:47  47.3N   70.4W MB=0.9  ECAN OF SAINT-JEAN-PORT-JOLI, QC    

P:  7MAR2024 161146    47.0N   70.0W 2.0-3.9 AAAAA  Maine                      

 

O: 07MAR2024 18:05:43  72.4N   75.8W MB=3.0  ECAN OF POND INLET, NU  

O:  7MAR2024 11:47:47  72.1N   75.2W MB=1.9  ECAN OF POND INLET, NU              

P:  7MAR2024 161206    71.0N   75.0W 2.5-3.9 ABAAA  Baffin/Davis Strait Canada 

 

O:  7MAR2024 10:45:31  45.7N   75.6W MB=1.6  ECAN OF NOTRE-DAME-DE-LA-SALETTE, QC

P:  6MAR2024 161154    46.0N   74.0W 2.0-3.9 AAAAA  New York State             

 

HAWAII

 

No earthquakes of M>=3 were located in Hawaii.