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: 23OCT2021 10:32:38  24.1N  121.7E ML=4.5  EMSC   TAIWAN

O: 24OCT2021 04:38:52  24.1N  121.6E ML=4.5  EMSC   TAIWAN

O: 24OCT2021 05:12:42  24.6N  121.7E ML=5.4  EMSC   TAIWAN

O: 24OCT2021 05:11:34  24.5N  121.9E Mw=6.2  EMSC   TAIWAN                       

P: 24OCT2021 138158    24.0N  124.0E 4.0-5.4 AABAA  Taiwan                     

P: 25OCT2021 138157    23.0N  122.0E 4.0-5.4 ABAAA  Taiwan                     

P: 28OCT2021 138158    24.0N  123.0E 4.0-5.5 BAAAA  Taiwan                     

 

O: 23OCT2021 19:57:13  39.6N   71.2E mb=4.2  EMSC   KYRGYZSTAN                   

P: 25OCT2021 138230    41.0N   73.0E 4.0-5.4 ABBAA  Kirgizstan/Xinjiang        

P: 28OCT2021 138182    38.0N   72.0E 3.8-5.4 BBAAA  Hindu Kush/Pakistan        

 

O: 24OCT2021 05:59:08  35.9N   75.0E ML=4.2  EMSC   NORTHWESTERN KASHMIR         

P: 28OCT2021 138195    35.0N   75.0E 3.8-5.3 BAAAA  Northern India             

 

O: 23OCT2021 14:16:03  51.1N   98.1E mb=4.2  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 29OCT2021 138276    51.0N   98.0E 3.0-4.7 CAAAA  So. Siberia                

 

O: 23OCT2021 08:33:30  18.8N   79.4E ML=4.0  EMSC   ANDHRA PRADESH, INDIA        

 

INDONESIA AND PHILIPPINES

 

O: 24OCT2021 05:28:10   1.3N  122.5E ML=4.2  EMSC   MINAHASA, SULAWESI, INDONESIA

O: 23OCT2021 13:25:41   1.0N  122.0E ML=4.1  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 25OCT2021 138095     1.0N  124.0E 4.0-5.4 AABAA  Mindanao, Philippines      

 

O: 24OCT2021 03:22:09   1.7N  126.6E mb=4.8  EMSC   MOLUCCA SEA                  

P: 25OCT2021 138094     2.0N  129.0E 4.0-5.6 AACAA  Halmahera                  

 

O: 24OCT2021 01:30:21   2.6S  128.9E ML=4.2  EMSC   CERAM SEA, INDONESIA         

P: 27OCT2021 138101     3.0S  128.0E 4.0-5.4 BAAAA  Ceram area                 

 

O: 24OCT2021 00:24:03   2.8S  122.1E ML=4.6  EMSC   SULAWESI, INDONESIA          

P: 23OCT2021 138115     1.0S  123.0E 4.0-5.6 ABAAA  Sulawesi area              

 

O: 23OCT2021 23:34:26   4.7S  102.1E mb=4.9  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 27OCT2021 138114     6.0S  103.0E 4.0-5.6 BBAAA  So. of Sumatera            

 

O: 23OCT2021 10:32:42   7.0S  129.9E mb=4.5  EMSC   BANDA SEA

O: 23OCT2021 07:12:58   6.0S  129.1E mb=4.3  EMSC   BANDA SEA                    

P: 22OCT2021 138118     6.0S  130.0E 4.0-5.5 AAAAA  West Irian, PNG            

 

O: 23OCT2021 23:08:33   8.5N  127.0E mb=5.0  EMSC   PHILIPPINE ISLANDS REGION    

P: 24OCT2021 138094     8.0N  127.0E 4.0-5.4 AAAAA  Halmahera                  

 

NEIC reported this earthquake of M 5.0 in Caraga, Philippines was felt with intensity II-III in the area(s) of Caraga, Philippines at Barcelona (VI), Hinatuan (IV) and Tandag.

 

O: 23OCT2021 14:58:15   9.8S  118.9E mb=4.1  EMSC   SUMBAWA REGION, INDONESIA    

P: 26OCT2021 138304    11.0S  118.0E 4.0-5.6 BBAAA  So. of Indonesia           

 

 

CENTRAL AND SOUTH AMERICA

 

O: 24OCT2021 03:07:03  14.5N   93.8W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 26OCT2021 138124    16.0N   93.0W 3.5-5.1 ABAAA  Chiapas, Mexico            

 

O: 23OCT2021 16:34:53  16.1S   74.0W ML=4.0  EMSC   NEAR COAST OF SOUTHERN PERU  

P: 22OCT2021 138302    16.0S   74.0W 4.0-5.4 AAAAA  So. Peru/Bolivia           

 

O: 24OCT2021 06:33:37  16.7N   95.1W ML=4.0  EMSC   OAXACA, MEXICO               

P: 27OCT2021 138124    16.0N   95.0W 3.5-5.2 BAAAA  Chiapas, Mexico            

 

O: 23OCT2021 22:47:26  17.3N   62.1W mb=4.6  EMSC   ANTIGUA AND BARBUDA REGION   

P: 24OCT2021 138129    18.0N   62.0W 3.0-5.3 AAAAA  Leeward Islands            

 

O: 23OCT2021 21:28:36  16.9N   94.4W ML=4.0  EMSC   OAXACA, MEXICO

O: 24OCT2021 05:06:17  17.3N   92.1W ML=4.0  EMSC   CHIAPAS, MEXICO              

P: 26OCT2021 138124    16.0N   93.0W 3.5-5.1 AAAAA  Chiapas, Mexico            

 

O: 24OCT2021 05:57:00  18.3N   68.4W Md=3.3  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P: 25OCT2021 138139    18.0N   67.0W 3.4-5.1 AABAA  Puerto Rico                

 

O: 23OCT2021 09:09:47  18.3N   72.1W ML=3.0  EMSC   HAITI REGION                 

P: 16OCT2021 137874    19.0N   71.0W 3.4-4.9 CAAAA  Dominican Republic         

 

O: 23OCT2021 22:04:51  18.6N   67.1W Md=3.1  EMSC   PUERTO RICO REGION

O: 23OCT2021 14:16:06  18.6N   66.2W Md=3.1  EMSC   PUERTO RICO REGION           

P: 25OCT2021 138139    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 23OCT2021 07:56:41  18.5N   73.9W ML=3.3  EMSC   HAITI REGION

O: 24OCT2021 04:59:17  18.8N   74.1W mb=4.1  EMSC   HAITI REGION

O: 23OCT2021 11:16:34  18.8N   74.0W ML=3.4  EMSC   HAITI REGION                 

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 CAAAA  Haiti                      

 

O: 23OCT2021 18:25:35  19.3N   96.3W ML=4.0  EMSC   VERACRUZ, MEXICO             

P: 22OCT2021 138137    18.0N   97.0W 3.5-5.5 ABAAA  Oaxaca, Mexico             

 

O: 23OCT2021 19:43:39  22.1S   68.7W mb=4.1  EMSC   ANTOFAGASTA, CHILE           

P: 19OCT2021 138060    23.0S   69.0W 4.0-5.4 BAAAA  Coast No. Chile            

 

O: 23OCT2021 08:21:42  24.2S   67.1W mb=4.8  EMSC   SALTA, ARGENTINA             

P: 22OCT2021 138313    23.0S   66.0W 4.0-5.5 ABAAA  Argentina                  

 

O: 23OCT2021 20:18:17  27.3N  111.4W ML=3.7  EMSC   GULF OF CALIFORNIA           

P: 13OCT2021 137881    28.0N  112.0W 3.5-4.9 CAAAA  Gulf of California         

 

 

AFRICA AND EUROPE

 

O: 23OCT2021 07:28:25  28.7N   17.8W ML=4.1  EMSC   CANARY ISLANDS, SPAIN REGION

O: 23OCT2021 15:34:47  28.6N   17.8W ML=4.7  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 23OCT2021 138144    28.0N   18.0W 3.5-4.9 AAAAA  Canary Islands             

 

SOUTHWEST PACIFIC

 

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

 

OCEAN RIDGES

 

O: 23OCT2021 14:17:52  37.5S   50.9E Mw=4.9  EMSC   SOUTHWEST INDIAN RIDGE       

P: 15OCT2021 138075    34.0S   55.0E 4.0-5.8 CCCAA  So. Indian Ocean           

 

O: 23OCT2021 08:00:47  57.5S   25.6W mb=5.0  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 24OCT2021 138341    58.0S   25.0W 4.0-5.9 AAAAA  So. Sandwich Islands       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 23OCT2021 16:28:41  37.7S  179.7E ML=4.2  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 28OCT2021 138329    38.0S  178.0E 3.0-4.5 BABAA  North 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: 23OCT2021 07:55:33  31.4N  115.5W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO       

P: 24OCT2021 138200    30.9N  114.6W 2.5-4.8 AAAAA  So. California             

 

O: 23OCT2021 11:27:14  32.0N  117.6W ML=2.8  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 25OCT2021 138202    32.0N  117.4W 2.5-4.8 AAAAA  So. California             

 

O: 24OCT2021 06:49:11  33.0N  115.9W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 24OCT2021 06:49:11  33.0N  115.9W ML=3.6  ANSS   SOUTHERN CALIFORNIA

O: 23OCT2021 16:12:50  33.2N  116.0W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 23OCT2021 13:22:33  32.9N  115.5W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 23OCT2021 138201    33.3N  115.8W 2.5-4.8 AAAAA  So. California             

P: 26OCT2021 138201    32.9N  115.6W 2.5-4.8 BAAAA  So. California             

 

NEIC reported this earthquake of M 3.6 in Southern California was felt with intensity II-III in the area(s) of Southern California in Imperial, El Centro, Calexico, Mexicali.

 

O: 23OCT2021 21:24:47  34.1N  117.3W Ml=2.0  EMSC   GREATER LOS ANGELES AREA, CALI

P: 25OCT2021 138203    33.7N  117.5W 2.5-4.5 AAAAA  So. California             

P: 28OCT2021 138203    34.1N  117.4W 2.5-4.6 BAAAA  So. California             

 

O: 23OCT2021 16:28:35  37.0N  121.6W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 25OCT2021 138172    37.1N  121.5W 2.5-4.6 AAAAA  Central California         

 

O: 23OCT2021 12:30:17  37.6N  118.7W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 25OCT2021 138167    37.8N  118.2W 2.5-4.7 AAAAA  California/Nevada area     

P: 27OCT2021 138165    37.4N  118.6W 2.5-4.6 CAAAA  California/Nevada area     

 

O: 23OCT2021 15:36:45  38.0N  122.3W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O: 23OCT2021 13:34:44  38.0N  122.3W ML=2.5  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 22OCT2021 138175    37.9N  122.0W 2.5-4.6 AAAAA  Central California          

P: 26OCT2021 138175    38.0N  122.3W 2.5-4.6 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.8 in San Francisco Bay, California was felt with intensity II-III in the area(s) of San Francisco Bay, California at Hercules, Pinole, Rodeo, El Sobrante, Crockett, Marginez, Richmond, San Pablo, El Cerrito, Berkeley.

 

O: 23OCT2021 21:12:54  38.2N  117.9W ml=2.5  EMSC   NEVADA                       

P: 25OCT2021 138167    37.8N  118.2W 2.5-4.7 AAAAA  California/Nevada area     

 

O: 23OCT2021 21:46:28  39.6N  120.3W ML=3.2  EMSC   NORTHERN CALIFORNIA          

P: 22OCT2021 138169    39.3N  120.0W 2.5-4.6 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.3 in Loyalton, northern California was felt with intensity II-III in the area(s) of Loyalton, northern California at Sierraville, Loyalton, Truckee, Chicoot, Norden, Nevada City, Foresthill, Grass Valley and in Reno, Nevada.

 

O: 24OCT2021 03:53:39  38.8N  122.9W Md=2.8  EMSC   NORTHERN CALIFORNIA

O: 24OCT2021 04:09:22  38.8N  122.9W Md=2.6  EMSC   NORTHERN CALIFORNIA

O: 24OCT2021 02:57:36  38.8N  122.9W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 22OCT2021 138176    38.7N  122.7W 2.5-4.4 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.8 in the Geysers, California was felt with intensity II-III in the area(s) of the Geysers, California at Hopland and Guerneville.

 

ALASKA

 

O: 23OCT2021 23:02:31  56.3N  156.5W ML=3.5  EMSC   ALASKA PENINSULA             

P: 24OCT2021 138264    57.0N  156.6W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O: 24OCT2021 05:33:51  59.7N  153.0W ML=3.3  EMSC   SOUTHERN ALASKA              

P: 25OCT2021 138282    60.2N  153.2W 3.2-5.3 AAAAA  Central Alaska             

 

O: 24OCT2021 03:51:42  64.4N  146.7W ML=3.5  EMSC   CENTRAL ALASKA               

P: 27OCT2021 138285    63.2N  145.5W 3.2-5.3 BBAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.3 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska at Eielson AFB, North Pole and Delta Junction.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 23OCT2021 09:10:58  42.3N  126.2W ML=3.2  EMSC   OFF COAST OF OREGON

O: 23OCT2021 15:59:37  42.2N  126.6W ML=3.1  EMSC   OFF COAST OF OREGON          

P: 23OCT2021 138244    43.1N  126.5W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

NEIC reported this earthquake of M 3.2 off the coast of Oregon was felt with intensity II-III in the area(s) of Oregon at Gold Beach, Eugene, Corvallis.

 

ROCKY MOUNTAINS REGION

 

O: 23OCT2021 08:00:22  31.6N  104.4W ML=2.6  EMSC   WESTERN TEXAS                

P: 24OCT2021 138199    32.6N  104.6W 2.0-3.9 AAAAA  SW U.S.A                   

 

O: 24OCT2021 03:37:05  47.9N  114.0W Ml=2.7  EMSC   WESTERN MONTANA              

P: 17OCT2021 137984    48.0N  115.0W 2.0-3.9 CAAAA  Montana/Idaho              

 

NEIC reported this earthquake of M 2.5 in Western Montana was felt with intensity II-III in the area(s) of Western Montana at Bigfork and Polson.

 

EASTERN U.S./CANADA

 

No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.

 

HAWAII

 

O: 23OCT2021 15:23:51  19.4N  155.5W ML=3.4  EMSC   ISLAND OF HAWAII, HAWAII     

P: 23OCT2021 138128    18.8N  155.2W 3.0-4.8 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.2 in Hawaii was felt with intensity II-III in the area(s) of Hawaii in Captain Cook, Hilo, Naalehu, Holualoa and Kailua Kona.

 

 

 

 

 

 

UNUSUAL QUAKE IN MICRONESIA LIKELY TIDALLY TRIGGERED

 

EARTHQUAKE SUMMARY FOR OCTOBER 22, 2021

 

 

An unusual earthquake of M 5.4 in Micronesia was the largest earthquake in the world today. NEIC reported light intensity in Micronesia at Polowat and Chuuk.

The last earthquake within about 400 km of this epicenter of M>=5.4 was an M 5.6 on November 11, 2015 but no such earthquakes have hit within about 200 km in at least 30 years. This epicenter is located near the longitude of maximum tidal stress with the recent full moon as noted in previous issues of this summary:

 

"The full moon arrived on October 20 at 14:57 UT. Longitudes which were sub-solar (local solar noon) at this time are near 45 West while those which are anti-solar (local solar mid-night) are near 135 East. In the west these include areas of the northern Mid-Atlantic and the Caribbean while in the east most of the subduction zone from eastern Indonesia north to Japan and the Kuril Islands are included. These are the longitudes where enhanced seismicity with this full moon are most likely. A geomagnetic storm is likely to favor seismicity in the region of Indonesia and at higher latitudes with major events most likely around local solar noon and midnight. The likelihood of a major earthquake in the next week (October 18-24, 2021), as estimated by this summary, is moderate." (October 20-23, 2021)

 

O: 22OCT2021 07:27:53   4.4N  147.2E Mw=5.4  EMSC   FED. STATES OF MICRONESIA REGI

 

A moderate earthquake of M 5.1-5.3 was also widely felt in Taiwan today.

NEIC reported this earthquake of M 5.1 in Taiwan was felt with intensity II-III in the area(s) of Taiwan in Ilan, Taichung, Taipei, Tainan, and IV in Hualien, and Nantou. CWB reported this earthquake was felt with intensity IV in Hualien, III in Yilan, Nantou, Taichung; II in Hsinchu, Yunlin, Chiayi, I in Taoyuan, Taipei, Taitung, Changhua and Tainan Counties, Taiwan. This earthquake, like that in Micronesia was likely triggered by high tidal stresses associated with the full moon. It occurred within about one hour of local solar noon, a time when tidal stresses maximize. Further seismic enhancement is likely in Taiwan in the next several days. Forecast 138157 had expected this event within about 100 km was likely around October 25.

 

O: 23OCT2021 03:16:03  24.1N  121.8E mb=5.1  EMSC   TAIWAN                       

O: 23OCT2021 03:16:04  24.1N  121.7E ML=5.3  TAI    Hualien, Taiwan              

P: 25OCT2021 138157    23.0N  122.0E 4.0-5.4 AAAAA  Taiwan                     

 

The strongest earthquake in the U.S. or Canada today was an M 5.1 in the Rat Islands, Aleutians, Alaska. NEIC reported it was felt with intensity II in Adak, Alaska. The last earthquake in the Rat Islands within about 150 km of this epicenter occurred on July 11, 2021 with M 5.3 and 5.1. The only other such event in the Rat Islands in the past two years occurred on May 17, 2021 with M 5.4. Forecast 138274 had expected today's event with in about 50 km was likely around October 27.

 

O: 23OCT2021 03:10:03  51.6N  178.8E mb=5.1  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 27OCT2021 138274    51.0N  179.0E 4.0-5.6 BAAAA  Rat Islands                

 

The strongest earthquake felt outside Alaska in the U.S. today was an M 3.5-3.7 off the coast of Baja California. NEIC reported this earthquake of M 3.6 off the coast of Baja California  was felt with intensity II-III in the area(s) of California in Imperial Beach, Coronado, San Diego, La Mesa, La Jolla. This is the strongest earthquake within about 100 km of this epicenter since an M 4.2 more than two years ago on June 5, 2019. Forecast 138202 had expected this activity was likely within about 50 km around October 25. 

 

O: 23OCT2021 02:56:32  31.9N  117.9W ML=3.5  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

O: 23OCT2021 02:56:32  31.9N  117.9W ML=3.7  ANSS   OFFSHORE BAJA CALIFORNIA, MEXI

P: 25OCT2021 138202    32.0N  117.4W 2.5-4.8 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: 23OCT2021 03:16:03  24.1N  121.8E mb=5.1  EMSC   TAIWAN                       

O: 23OCT2021 03:16:04  24.1N  121.7E ML=5.3  TAI    Hualien, Taiwan              

P: 25OCT2021 138157    23.0N  122.0E 4.0-5.4 ABAAA  Taiwan                     

 

O: 22OCT2021 20:58:09  29.1N   67.6E mb=4.2  EMSC   PAKISTAN                     

P: 19OCT2021 137908    30.0N   68.0E 3.8-5.8 BAAAA  Hindu Kush/Pakistan        

 

O: 22OCT2021 23:03:13  51.4N   90.7E Mw=5.1  EMSC   SOUTHWESTERN SIBERIA, RUSSIA 

P: 14OCT2021 137981    46.0N   96.0E 4.0-5.6 CCCAA  Mongolia                   

 

NEIC reported this earthquake of M 5.1 in Siberia, Russia was felt with intensity II-III in the area(s) of Siberia, Russia at Kyzyl-Mazhalyk.

 

INDONESIA AND PHILIPPINES

 

O: 22OCT2021 17:01:13   2.3S  100.8E mb=4.3  EMSC   KEP. MENTAWAI REGION, INDONESI

P: 27OCT2021 138114     2.0S  101.0E 4.0-5.5 BAAAA  So. of Sumatera            

 

O: 22OCT2021 20:51:43   4.1S  136.4E ML=4.0  EMSC   NEAR S COAST OF PAPUA, INDONES

P: 29OCT2021 138117     4.0S  136.0E 4.0-5.6 CAAAA  West Irian, PNG            

 

O: 22OCT2021 07:27:53   4.4N  147.2E Mw=5.4  EMSC   FED. STATES OF MICRONESIA REGI

 

O: 23OCT2021 01:16:13   9.5S  118.5E ML=4.3  EMSC   SUMBAWA REGION, INDONESIA    

P: 26OCT2021 138304    11.0S  118.0E 4.0-5.6 BBAAA  So. of Indonesia           

 

O: 22OCT2021 19:44:49  13.7N  123.1E ML=4.2  EMSC   LUZON, PHILIPPINES           

P: 24OCT2021 138131    14.0N  121.0E 3.5-5.0 AABAA  Luzon, Philippines         

 

O: 22OCT2021 17:52:51  18.1N  145.4E mb=4.3  EMSC   PAGAN REG., N. MARIANA ISLANDS

P: 13OCT2021 137892    20.0N  146.0E 4.0-5.4 CBAAA  Volcano Islands            

 

 

CENTRAL AND SOUTH AMERICA

 

 

O: 22OCT2021 18:06:25  11.1S   74.7W ML=4.2  EMSC   CENTRAL PERU                 

P: 27OCT2021 138297    11.0S   74.0W 4.0-5.9 BAAAA  Central Peru               

 

O: 23OCT2021 04:20:41  15.7S   72.0W ML=4.0  EMSC   SOUTHERN PERU                

P: 26OCT2021 138297    14.0S   73.0W 4.0-5.5 BBAAA  Central Peru               

 

O: 22OCT2021 18:38:59  15.9N   94.9W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 27OCT2021 138124    16.0N   95.0W 3.5-5.2 BAAAA  Chiapas, Mexico            

 

O: 22OCT2021 22:20:58  18.3N   67.7W Md=3.2  EMSC   MONA PASSAGE, PUERTO RICO    

P: 22OCT2021 138139    18.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

NEIC reported this earthquake of M 3.7 north of Puerto Rico  was felt with intensity II-III in the area(s) of Puerto Rico in Toa Baja and Morovis.

 

O: 22OCT2021 20:39:42  18.3N   72.0W ML=3.0  EMSC   HAITI REGION                 

O: 22OCT2021 17:14:15  18.8N   74.0W ML=3.6  EMSC   HAITI REGION                 

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 CAAAA  Haiti                       

 

O: 22OCT2021 11:14:50  22.2S   69.1W mb=4.4  EMSC   ANTOFAGASTA, CHILE           

P: 19OCT2021 138060    23.0S   69.0W 4.0-5.4 BAAAA  Coast No. Chile            

 

NEIC reported this earthquake of M 4.4 in Calama, Antofagasta, Chile was felt with intensity II-III in the area(s) of Calama, Antofagasta, Chile.

 

O: 23OCT2021 02:13:56  33.2S   71.7W mb=5.0  EMSC   VALPARAISO, CHILE            

P: 24OCT2021 138326    33.0S   71.0W 4.0-5.9 AAAAA  Central Chile              

 

NEIC reported this earthquake of M 5.0 in Valparaiso, Chile was felt with intensity II-III in the area(s) of Valparaiso, Chile with VI in Valparaiso and Quilpue; V in Vina del Mar, IV in San Antonio, La Ligua and II-III in Villa Alemana, Calera, Lampa, Penaflor and San Bernardo.

 

O: 23OCT2021 01:45:27  36.9S   72.8W mb=4.7  EMSC   BIO-BIO, CHILE               

P: 29OCT2021 138327    37.0S   74.0W 4.0-5.6 CAAAA  Central Chile              

 

NEIC reported this earthquake of M 4.7 in Biobio, Chile was felt with intensity II-III in the area(s) of Biobio, Chile with VI in Concepcion, Talcahuano, Los Angeles, Chillan, Angol, Araucania; III in Chiguayante, Penco,  Coronel, Arauco, and Curanilahue.

 

 

AFRICA AND EUROPE

 

O: 23OCT2021 06:07:00  28.6N   17.8W ML=3.9  EMSC   CANARY ISLANDS, SPAIN REGION

O: 23OCT2021 00:22:27  28.3N   17.5W ML=3.9  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 23OCT2021 138144    28.0N   18.0W 3.5-4.9 AAAAA  Canary Islands             

 

O: 22OCT2021 17:12:50  35.2N   25.3E mb=4.3  EMSC   CRETE, GREECE

O: 22OCT2021 10:11:31  35.1N   25.2E ML=4.4  EMSC   CRETE, GREECE                

P: 24OCT2021 138160    35.0N   25.0E 3.0-4.6 AAAAA  Aegean Sea                 

 

NEIC reported this earthquake of M 4.3 and M 4.5 in Crete, Greece was felt with intensity II-III in the area(s) of Crete, Greece with V in Anoyia and Arkalokhorion; IV in Glavinica, Bulgaria and Nea Alikarnassos, Greece and II-III in Koutouloufarion and Khanion tou, Limin and Gazion, Iraklion.

 

O: 23OCT2021 01:17:19  38.8N   20.6E mb=4.1  EMSC   GREECE                        

P: 24OCT2021 138190    38.0N   20.0E 3.0-4.5 AAAAA  No. Greece                 

 

NEIC reported this earthquake of M 4.1 in Levkas, Greece was felt with intensity II-III in the area(s) of Levkas, Greece at Karia, Leukas and Nidrion.

 

SOUTHWEST PACIFIC

 

O: 22OCT2021 21:59:48  16.9S  174.1W mb=5.0  EMSC   TONGA                        

P: 23OCT2021 138306    16.0S  174.0W 4.0-5.4 AAAAA  Tonga Islands              

 

O: 22OCT2021 08:28:53  26.0S  178.5E mb=4.3  EMSC   SOUTH OF FIJI ISLANDS         

P: 26OCT2021 138325    25.0S  179.0E 4.0-5.5 BAAAA  Tonga/Fiji                 

 

O: 22OCT2021 14:21:02  18.8S  177.6W mb=4.5  EMSC   FIJI REGION                  

P: 24OCT2021 138308    19.0S  176.0W 4.0-5.6 AABAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 23OCT2021 00:34:17  56.3S   27.9W Mw=5.2  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 25OCT2021 138341    55.0S   29.0W 4.0-5.9 ABAAA  So. Sandwich Islands       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 22OCT2021 15:43:26  31.8S  179.1E ML=4.1  EMSC   KERMADEC ISLANDS REGION      

P: 27OCT2021 138333    31.0S  180.0E 4.0-5.4 BAAAA  So. Kermadec Islands       

 

O: 23OCT2021 06:51:53  35.1S  179.7E ML=4.2  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 24OCT2021 138333    33.0S  178.0E 4.0-5.6 ACBAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

 

O: 23OCT2021 06:50:30  35.5N  138.9E ML=4.0  EMSC   EASTERN HONSHU, JAPAN        

P: 26OCT2021 138191    35.0N  139.0E 3.5-5.0 BAAAA  No. Honshu, Japan          

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 22OCT2021 09:42:53  29.5N  116.3W ML=3.8  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 17OCT2021 137929    31.9N  116.3W 2.5-4.7 BCAAA  So. California             

 

O: 22OCT2021 09:56:02  29.8N  113.9W ML=3.7  EMSC   GULF OF CALIFORNIA            

P: 24OCT2021 138200    30.9N  114.6W 2.5-4.8 ABAAA  So. California             

 

O: 23OCT2021 02:56:32  31.9N  117.9W ML=3.5  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 25OCT2021 138202    32.0N  117.4W 2.5-4.8 AAAAA  So. California             

 

O: 23OCT2021 06:54:53  36.5N  118.0W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P: 23OCT2021 138164    36.9N  117.4W 2.5-4.7 AAAAA  California/Nevada area     

 

O: 22OCT2021 21:14:19  37.6N  118.8W ML=3.1  EMSC   CENTRAL CALIFORNIA           

O: 22OCT2021 21:14:19  37.6N  118.8W ML=3.5  ANSS   CENTRAL CALIFORNIA           

P: 24OCT2021 138165    37.3N  118.3W 2.5-4.6 AAAAA  California/Nevada area     

P: 27OCT2021 138165    37.4N  118.6W 2.5-4.6 BAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.5 in Mammoth Lakes, California was felt with intensity II-III in the area(s) of Mammoth Lakes, California at Benton and Bishop.

 

O: 22OCT2021 14:52:56  38.0N  122.3W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 22OCT2021 138175    37.9N  122.0W 2.5-4.6 AAAAA  Central California         

 

O: 22OCT2021 13:55:27  38.5N  119.4W ml=2.4  EMSC   CENTRAL CALIFORNIA           

P: 24OCT2021 138168    38.5N  119.6W 2.5-4.4 AAAAA  California/Nevada area     

 

 

O: 23OCT2021 04:26:26  38.9N  122.7W ML=2.7  EMSC   NORTHERN CALIFORNIA

O: 23OCT2021 04:28:00  38.8N  122.8W Md=2.7  EMSC   NORTHERN CALIFORNIA          

P: 22OCT2021 138176    38.7N  122.7W 2.5-4.4 AAAAA  Central California         

 

NEIC reported these earthquakes of M 3.2 and 2.9 in the Geysers, California was felt with intensity II-III in the area(s) of the Geysers, California in Geyserville, Cloverdale, Healdsburg, Cotati and V in Kelseyville.

 

ALASKA

 

O: 23OCT2021 03:10:03  51.6N  178.8E mb=5.1  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 27OCT2021 138274    51.0N  179.0E 4.0-5.6 BAAAA  Rat Islands                

 

O: 23OCT2021 01:52:40  69.1N  144.6W ML=3.2  EMSC   NORTHERN ALASKA              

P: 26OCT2021 138290    69.0N  144.0W 2.5-4.0 BAAAA  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

 

 

O: 22OCT2021 23:55:22  31.7N  104.4W ML=3.5  EMSC   WESTERN TEXAS                

P: 24OCT2021 138199    32.6N  104.6W 2.0-3.9 AAAAA  SW U.S.A                   

 

O: 22OCT2021 11:29:38  39.5N  112.0W ML=3.4  EMSC   UTAH

O: 22OCT2021 15:24:36  39.4N  112.0W Ml=2.1  EMSC   UTAH                         

P: 25OCT2021 138217    38.7N  112.6W 2.0-4.1 BAAAA  Utah area                   

 

NEIC reported this earthquake of M 3.2 in Utah was felt with intensity II-III in the area(s) of Utah at Nephi, Centerfield, Santaquin,  Provo, Todele and West Jordan.

 

O: 22OCT2021 11:00:48  44.5N  115.2W Ml=2.7  EMSC   SOUTHERN IDAHO

O: 22OCT2021 17:06:37  44.3N  115.0W Ml=2.2  EMSC   SOUTHERN IDAHO               

P: 24OCT2021 138234    44.4N  115.4W 2.0-4.0 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.

 

HAWAII

 

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

 

MODERATE QUAKE SHAKES NORTH ISLAND, NEW ZEALAND

 

EARTHQUAKE SUMMARY FOR OCTOBER 21, 2021

 

The strongest earthquake felt in the world today was an M 5.6-5.9 under North Island, New Zealand. NEIC reported it was felt with intensity IV in North Island at Taumaraunui, Manawatu-Wanganui, Taupo, Wakato, Palmerston North, and II-III in Ohura, Te Kuiti, Wanganui, Tokoroa, Hastings, Kapiti, Wellington and Pukekohe. GEONET reported this earthquake was felt with moderate intensity east of Stratford and in southwestern North Island and northern South Island. Light to moderate intensity was reported throughout much of southern North Island and northern South Island. More than 24738 people reported feeling this earthquake with 9670 reporting weak shaking; 11956 light; 2824 moderate and 243 strong intensity; 21 severe and 24 extreme shaking. The last earthquake under North Island with M>=5.9 within about 200 km of today's epicenter occurred on October 30, 2018 with M 6.1 and prior to that on December 7, 2012 with M 6.3. Forecast 138074 had expected today's activity within about 15 km of the epicenter was likely in mid-October.

 

O: 21OCT2021 21:58:19  39.0S  174.9E MS=5.9  GEONET North Island, New Zealand                      

O: 21OCT2021 21:58:18  39.1S  175.0E Mw=5.6  EMSC   NORTH ISLAND OF NEW ZEALAND  

P: 16OCT2021 138074    39.0S  175.0E 3.0-4.4 BAAAA  North Island, N.Z.         

 

A series of moderate earthquakes continued today in the eruption of Cumbre Viejo, La Palma, Canary Islands and in the aftershock zone in Crete, Greece. The activity in the Canary Islands accompanied a major continuing eruption of the volcano with which shut down air traffic today amid continuing ash and lava flows. Forecast 138144 had expected this enhanced activity around October 23.

 

O: 22OCT2021 06:54:49  28.6N   17.8W ML=4.2  EMSC   CANARY ISLANDS, SPAIN REGION 

O: 21OCT2021 22:54:03  28.6N   17.8W ML=4.4  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 23OCT2021 138144    28.0N   18.0W 3.5-4.9 AAAAA  Canary Islands             

 

Earthquakes of M 4.3 and 4.5-4.6 were widely felt in the area of Crete, Greece today. These are the strongest aftershocks to date of the M 6.4 about 100 km to the east of these epicenter of October 12, 2021. Forecasts 137906 and 138160 had expected this activity was likely within about 100 km around October 19-24. The strongest of these, the M 4.5, occurred within minutes of local solar noon, and was probably promoted by high tidal stresses which maximize near this hour. 

 

NEIC reported the earthquake of M 4.5-4.6 in Crete, Greece was felt with intensity II-III in the area(s) of Epano and Nea Alikarnassos and V in Arkalokhorion, Iraklion.

 

O: 21OCT2021 09:38:42  35.1N   25.3E ML=4.5  EMSC   CRETE, GREECE                

O: 21OCT2021 09:38:42  35.1N   25.3E ML=4.6  ANSS   CRETE, GREECE                

P: 19OCT2021 137906    34.0N   24.0E 3.0-4.7 ABAAA  Crete                      

 

O: 21OCT2021 08:12:58  35.2N   25.3E ML=4.3  EMSC   CRETE, GREECE                

P: 24OCT2021 138160    35.0N   25.0E 3.0-4.6 BAAAA  Aegean Sea                 

 

A strong earthquake also occurred as  an M 6.0 in Fiji. It was not reported felt in this remote area. The last earthquake of M>=6 in Fiji within about 150 km of this epicenter occurred on September 16, 2018 with M 6.5 abou 150 km to the southwest and an M 6.1 on June 17, 2017 about 100 km to the north. All the events in this region of magnitudes greater than 6.0 in the past 30 years have occurred at deep focal depths of 450-700 km and are unlikely to trigger tsunamis or local damage. Forecasts 138068 and 138069 had expected today's event was likely to the north around October 19.

 

O: 21OCT2021 08:10:43  25.2S  179.6E mw=6.0  ANSS   Fiji                         

O: 21OCT2021 08:10:44  25.3S  179.7E Mw=6.0  EMSC   SOUTH OF FIJI ISLANDS        

P: 19OCT2021 138068    22.0S  179.0W 4.0-5.6 ACAAA  Tonga Islands              

P: 19OCT2021 138069    23.0S  179.0E 4.0-5.4 ACAAA  Tonga/Fiji                 

 

A moderately strong earthquake also occurred as an M 5.5 in the Izu Islands, Japan. NEIC reported this earthquake was felt with maximum intensity IV in Japan in Kanagawa and II-III in Shizuoka, Tokyo, and Saitama. A moderate geomagnetic disturbance with maximum Kp 4 coincident with this and the earthquake in Tonga and may have helped trigger them. This earthquake follows the eruption of the volcano Mount Aso in southwestern Japan. This eruption blew ash up to 3500 meters and a lava flow accompanied the eruption, the first since October 2016. It also  occurred near local solar noon and was probably promoted by high tidal stresses associated with the full moon today as it was located at 138 East longitude near the longitude of maximum tidal stress with this alignment (at 135 E). This summary had noted this possibility in previous issues as:

 

"The full moon arrives on October 20 at 14:57 UT. Longitudes which are sub-solar (local solar noon) at this time are near 45 West while those which are anti-solar (local solar mid-night) are near 135 East. In the west these include areas of the northern Mid-Atlantic and the Caribbean while in the east most of the subduction zone from eastern Indonesia north to Japan and the Kuril Islands are included. These are the longitudes where enhanced seismicity with this full moon are most likely. A geomagnetic storm is likely to favor seismicity in the region of Indonesia and at higher latitudes with major events most likely around local solar noon and midnight. The likelihood of a major earthquake in the next week (October 18-24, 2021), as estimated by this summary, is moderate." (October 18-20, 2021)

 

This is the strongest earthquake within about 200 km of today's epicenter since an M 5.6 on July 6, 2020. The last of significantly larger magnitude was an M 6.3 on July 27, 2019. All of these events occurred between 325 and 500 km depth and caused little damage on the surface. Forecasts 137925 and 137904 had expected today's activity in mid-October around October 17-18. This earthquake is located at 105 degrees from the M 7.2 Guerrero Mexico quake of September 8 and may have been promoted by energy from this source.

 

O: 21OCT2021 08:36:47  32.1N  138.2E Mw=5.5  EMSC   IZU ISLANDS, JAPAN REGION    

P: 17OCT2021 137904    30.0N  139.0E 3.5-5.1 BCAAA  Central/So. Honshu Japan   

P: 18OCT2021 137925    31.0N  141.0E 4.0-5.5 BBBAA  Off East Coast Honshu      

 

The strongest earthquake in the U.S. or Canada today was an M 4.7 South of Alaska. The last earthquake of M>=4.7 in the area south of Alaska within about 150 km of this epicenter occurred with the mainshock in the Alaska Peninsula of

M 8.2 on July 30, 2021. A strong M 6.9 aftershock about 200 km to the northwest of today's event in the Alaska Peninsula was felt in the area on October 11, 2021.  Forecast 138011 had expected today's event in this area in mid-October.

 

O: 21OCT2021 08:24:40  55.5N  154.8W mb=4.7  EMSC   SOUTH OF ALASKA              

P: 15OCT2021 138011    54.7N  155.9W 3.5-4.9 CAAAA  Alaska Peninsula           

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: 21OCT2021 17:46:04  38.2N   72.7E mb=4.2  EMSC   TAJIKISTAN                   

P: 28OCT2021 138182    38.0N   72.0E 3.8-5.4 CAAAA  Hindu Kush/Pakistan        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 21OCT2021 13:39:25   3.2S  140.1E ML=4.0  EMSC   PAPUA, INDONESIA             

P: 19OCT2021 137847     2.0S  139.0E 4.0-5.4 ABAAA  West Irian, PNG            

 

O: 21OCT2021 19:34:36   6.0S  122.6E mb=4.4  EMSC   FLORES SEA                   

P: 24OCT2021 138099     7.0S  125.0E 4.0-5.4 BACAA  Banda Sea                  

 

O: 22OCT2021 00:29:09   6.7S  104.4E ML=4.0  EMSC   SUNDA STRAIT, INDONESIA      

P: 17OCT2021 137842     6.0S  104.0E 4.0-5.4 BAAAA  So. of Sumatera            

 

O: 22OCT2021 02:39:16   9.2S  110.4E mb=4.6  EMSC   SOUTH OF JAVA, INDONESIA     

P: 16OCT2021 137840     9.0S  111.0E 4.0-5.4 CAAAA  So. of Java                

 

 

NEIC reported the earthquake of M 4.6 in Java, Indonesia was felt with intensity II-III in the area(s) of Java, Indonesia in Prambanan and Jetis, Indonesia.

NEIC reported an earthquake of M 5.3 in Java was felt with intensity II-III in the area(s) of Java at Malang, Pasuruan, Surabaya, and IV in Blitar.

 

O: 22OCT2021 05:19:50  14.5N  123.4E mb=4.5  EMSC   LUZON, PHILIPPINES           

P: 14OCT2021 137861    14.0N  122.0E 3.5-5.1 CAAAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 4.5 in Bicol, Philippines  was felt with intensity II-III in the area(s) of  Bicol, Philippines at Daet, Garchitorena and Barcelonita.

 

O: 21OCT2021 18:00:18  20.1N  121.8E ML=3.9  EMSC   BATAN ISL REGION, PHILIPPINES

P: 23OCT2021 138156    20.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

 

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 21OCT2021 12:55:44  14.8N   94.3W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 21OCT2021 13:08:19  15.2N   93.9W mb=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 17OCT2021 137854    14.0N   93.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O: 22OCT2021 06:30:56  15.4N   95.8W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 17OCT2021 137870    15.0N   96.0W 3.5-5.6 BAAAA  Oaxaca, Mexico             

 

O: 21OCT2021 09:21:10  16.1N   99.3W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 20OCT2021 137871    16.0N  100.0W 3.5-5.3 AAAAA  Oaxaca, Mexico              

 

O: 21OCT2021 20:22:10  16.2N   93.7W mb=4.4  EMSC   CHIAPAS, MEXICO              

P: 26OCT2021 138124    16.0N   93.0W 3.5-5.1 BAAAA  Chiapas, Mexico            

 

O: 21OCT2021 13:37:00  16.7N   99.7W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO     

O: 22OCT2021 04:37:19  16.9N   99.7W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 20OCT2021 137871    16.0N  100.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 21OCT2021 21:47:07  17.4N   92.1W ML=4.0  EMSC   CHIAPAS, MEXICO              

P: 23OCT2021 138124    15.0N   92.0W 3.5-5.4 ACAAA  Chiapas, Mexico            

 

O: 21OCT2021 22:28:46  18.7N   74.1W ML=3.5  EMSC   HAITI REGION                 

O: 21OCT2021 20:45:23  18.9N   74.0W ML=3.4  EMSC   HAITI REGION                 

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 CAAAA  Haiti                      

 

 

AFRICA AND EUROPE

 

O: 22OCT2021 06:54:49  28.6N   17.8W ML=4.2  EMSC   CANARY ISLANDS, SPAIN REGION 

O: 21OCT2021 22:54:03  28.6N   17.8W ML=4.4  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 23OCT2021 138144    28.0N   18.0W 3.5-4.9 AAAAA  Canary Islands             

 

O: 21OCT2021 09:38:42  35.1N   25.3E ML=4.5  EMSC   CRETE, GREECE                

P: 19OCT2021 137906    34.0N   24.0E 3.0-4.7 ABAAA  Crete                      

 

O: 21OCT2021 08:12:58  35.2N   25.3E ML=4.3  EMSC   CRETE, GREECE                

P: 24OCT2021 138160    35.0N   25.0E 3.0-4.6 BAAAA  Aegean Sea                 

 

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

 

SOUTHWEST PACIFIC

 

O: 21OCT2021 08:10:44  25.3S  179.7E Mw=6.0  EMSC   SOUTH OF FIJI ISLANDS        

P: 26OCT2021 138325    25.0S  179.0E 4.0-5.5 BAAAA  Tonga/Fiji                 

 

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: 21OCT2021 21:58:18  39.1S  175.0E Mw=5.6  EMSC   NORTH ISLAND OF NEW ZEALAND  

P: 16OCT2021 138074    39.0S  175.0E 3.0-4.4 BAAAA  North Island, N.Z.         

 

O: 21OCT2021 08:12:01  32.6S  178.7E ML=4.7  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 18OCT2021 138076    32.0S  179.0E 4.0-5.5 BAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 21OCT2021 08:36:47  32.1N  138.2E Mw=5.5  EMSC   IZU ISLANDS, JAPAN REGION    

P: 26OCT2021 138178    33.0N  138.0E 3.5-5.2 BAAAA  Central/So. Honshu Japan   

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 21OCT2021 21:47:04  30.7N  114.3W ML=3.5  EMSC   GULF OF CALIFORNIA           

O: 21OCT2021 17:11:16  30.8N  114.3W ML=3.5  EMSC   GULF OF CALIFORNIA           

O: 21OCT2021 19:31:52  30.8N  114.3W ML=3.6  EMSC   GULF OF CALIFORNIA           

O: 21OCT2021 15:57:01  31.1N  114.8W ML=3.7  EMSC   GULF OF CALIFORNIA            

O: 21OCT2021 07:38:52  31.2N  115.4W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO      

O: 21OCT2021 07:20:29  31.3N  114.4W ML=3.5  EMSC   GULF OF CALIFORNIA           

O: 21OCT2021 15:39:23  31.4N  115.6W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 24OCT2021 138200    30.9N  114.6W 2.5-4.8 BAAAA  So. California             

 

O: 21OCT2021 15:41:36  32.4N  115.4W Ml=2.3  EMSC   BAJA CALIFORNIA, MEXICO      

P: 17OCT2021 137931    32.0N  116.3W 2.5-4.7 BAAAA  So. California             

 

O: 21OCT2021 17:22:23  33.6N  116.7W Ml=2.4  EMSC   SOUTHERN CALIFORNIA          

P: 14OCT2021 137935    33.9N  116.9W 2.5-4.4 CAAAA  So. California             

 

O: 21OCT2021 13:58:03  34.0N  118.4W Ml=2.4  EMSC   GREATER LOS ANGELES AREA, CALI

P: 19OCT2021 137938    34.0N  118.7W 2.5-4.5 AAAAA  So. California             

 

O: 21OCT2021 22:51:44  36.0N  119.8W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 17OCT2021 137898    36.1N  120.1W 2.5-4.8 BAAAA  Central California         

P: 22OCT2021 138171    36.1N  120.1W 2.5-4.5 AAAAA  Central California         

 

O: 21OCT2021 22:07:54  36.5N  121.0W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P: 19OCT2021 137898    36.2N  120.8W 2.5-4.8 AAAAA  Central California         

 

O: 21OCT2021 22:35:35  37.2N  119.3W ML=2.6  EMSC   CENTRAL CALIFORNIA           

P: 24OCT2021 138165    37.3N  118.3W 2.5-4.6 BAAAA  California/Nevada area     

 

O: 22OCT2021 02:30:17  37.6N  118.7W ML=2.9  EMSC   CENTRAL CALIFORNIA           

P: 24OCT2021 138165    37.3N  118.3W 2.5-4.6 AAAAA  California/Nevada area     

 

NEIC reported these earthquakes of M 2.8 and 3.4 in Central California were felt with intensity II-III in the area(s) of Central California in Mammoth Lakes, Bishop, June Lake, Shaver Lake (IV).

 

O: 21OCT2021 13:10:50  40.3N  125.0W ML=2.8  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 23OCT2021 138244    40.6N  124.9W 2.5-4.7 AAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O: 21OCT2021 08:24:40  55.5N  154.8W mb=4.7  EMSC   SOUTH OF ALASKA              

P: 15OCT2021 138011    54.7N  155.9W 3.5-4.9 CAAAA  Alaska Peninsula           

 

O: 21OCT2021 16:57:39  57.1N  146.5W ML=3.5  EMSC   GULF OF ALASKA               

P: 24OCT2021 138281    60.1N  147.1W 3.2-5.4 BBAAA  Central Alaska             

 

O: 21OCT2021 08:42:27  60.0N  153.4W ML=3.2  EMSC   SOUTHERN ALASKA              

P: 25OCT2021 138282    60.2N  153.2W 3.2-5.3 BAAAA  Central Alaska             

 

O: 22OCT2021 02:39:45  60.3N  150.2W ML=3.6  EMSC   KENAI PENINSULA, ALASKA      

P: 24OCT2021 138281    60.1N  147.1W 3.2-5.4 AABAA  Central Alaska             

 

NEIC reported this earthquake of M 3.4 in Kenai, Alaska was felt with intensity II-III in the area(s) of Kenai, Alaska at Cooper Landing, Sterling, Seldotna, Kenai, Kasilof, Seward and Anchorage.

 

O: 21OCT2021 18:44:34  63.0N  148.3W mb=4.4  EMSC   CENTRAL ALASKA               

P: 22OCT2021 138284    62.7N  150.6W 3.2-5.3 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 4.4 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska at Cantwell, Healy, Palmer, Chugiak, Wasilla, Fairbanks, Fort Richardson, Eagle River and Anchorage.

 

O: 21OCT2021 23:31:58  63.1N  150.9W ML=3.1  EMSC   CENTRAL ALASKA               

P: 22OCT2021 138284    62.7N  150.6W 3.2-5.3 AAAAA  Central Alaska             

 

O: 22OCT2021 00:48:52  69.3N  144.5W ML=3.3  EMSC   NORTHERN ALASKA              

P: 13OCT2021 138039    69.0N  144.0W 3.0-4.8 CAAAA  Northern Alaska            

P: 26OCT2021 138290    69.0N  144.0W 2.5-4.0 BAAAA  Northern Alaska            

 

O: 21OCT2021 03:31:03  55.4N  131.3W MB=3.2  ECAN Ketchikan, AK                  

P: 25OCT2021 138265    58.3N  133.5W 3.0-4.9 BCBAA  British Colombia           

 

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: 21OCT2021 15:13:36  31.7N  104.4W ML=2.3  EMSC   WESTERN TEXAS                

O: 21OCT2021 11:31:54  31.7N  104.4W ML=3.2  EMSC   WESTERN TEXAS                

O: 21OCT2021 15:33:13  31.7N  104.4W ML=3.2  EMSC   WESTERN TEXAS                

O: 21OCT2021 17:56:08  31.8N  104.6W ML=3.3  EMSC   WESTERN TEXAS                

P: 24OCT2021 138199    32.6N  104.6W 2.0-3.9 BAAAA  SW U.S.A                   

 

O: 21OCT2021 11:54:37  39.4N  110.3W MD=2.0  EMSC   UTAH                         

P: 18OCT2021 137905    38.3N  108.9W 2.0-4.0 BBAAA  Colorado area              

 

EASTERN U.S./CANADA

 

O: 21OCT2021 07:25:05  35.2N   96.1W ML=2.0  EMSC   OKLAHOMA                     

P: 23OCT2021 138212    35.0N   96.0W 2.0-4.1 AAAAA  Southeast U.S.             

 

HAWAII

 

O: 22OCT2021 04:34:43  19.2N  155.5W ML=3.2  EMSC   ISLAND OF HAWAII, HAWAII     

O: 21OCT2021 17:28:39  19.3N  155.2W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P: 17OCT2021 137858    19.4N  155.1W 3.0-4.6 BAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.0 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Volcano.

 

MODERATE EARTHQUAKE SHAKES SOUTHEASTERN HONSHU, JAPAN

 

EARTHQUAKE SUMMARY FOR OCTOBER 20, 2021

 

The strongest earthquake in the world today was an M 6.0 in Fiji. It was not reported felt in this remote area. The last earthquake of M>=6 in Fiji within about 150 km of this epicenter occurred on September 16, 2018 with M 6.5 abou 150 km to the southwest and an M 6.1 on June 17, 2017 about 100 km to the north. All the events in this region of magnitudes greater than 6.0 in the past 30 years have occurred at deep focal depths of 450-700 km and are unlikely to trigger tsunamis or local damage. Forecasts 138068 and 138069 had expected today's event was likely to the north around October 19.

 

O: 21OCT2021 08:10:43  25.2S  179.6E mw=6.0  ANSS   Fiji                          

O: 21OCT2021 08:10:44  25.3S  179.7E Mw=6.0  EMSC   SOUTH OF FIJI ISLANDS        

P: 19OCT2021 138068    22.0S  179.0W 4.0-5.6 ACAAA  Tonga Islands              

P: 19OCT2021 138069    23.0S  179.0E 4.0-5.4 ACAAA  Tonga/Fiji                 

 

A moderately strong earthquake also occurred as an M 5.5 in the Izu Islands, Japan. NEIC reported this earthquake was felt with maximum intensity IV in Japan in Kanagawa and II-III in Shizuoka, Tokyo, and Saitama. A moderate geomagnetic disturbance with maximum Kp 4 coincident with this and the earthquake in Tonga and may have helped trigger them. This earthquake follows the eruption of the volcano Mount Aso in southwestern Japan. This eruption blew ash up to 3500 meters and  a lava flow accompanied the eruption, the first since October 2016. It also  occurred near local solar noon and was probably promoted by high tidal stresses associated with the full moon today as it was located at 138 East longitude  near the longitude of maximum tidal stress with this alignment (at 135 E). This summary had noted this possibility in previous issues as:

 

"The full moon arrives on October 20 at 14:57 UT. Longitudes which are sub-solar (local solar noon) at this time are near 45 West while those which are anti-solar (local solar mid-night) are near 135 East. In the west these include areas of the northern Mid-Atlantic and the Caribbean while in the east most of the subduction zone from eastern Indonesia north to Japan and the Kuril Islands are included. These are the longitudes where enhanced seismicity with this full moon are most likely. A geomagnetic storm is likely to favor seismicity in the region of Indonesia and at higher latitudes with major events most likely around local solar noon and midnight. The likelihood of a major earthquake in the next week (October 18-24, 2021), as estimated by this summary, is moderate." (October 18-20, 2021)

 

This is the strongest earthquake within about 200 km of today's epicenter since an M 5.6 on July 6, 2020. The last of significantly larger magnitude was an M 6.3 on July 27, 2019. All of these events occurred between 325 and 500 km depth and caused little damage on the surface. Forecasts 137925 and 137904 had expected today's activity in mid-October around October 17-18. This earthquake is located at 105 degrees from the M 7.2 Guerrero Mexico quake of September 8 and may have been promoted by energy from this source.

 

O: 21OCT2021 08:36:47  32.1N  138.2E Mw=5.5  EMSC   IZU ISLANDS, JAPAN REGION    

P: 17OCT2021 137904    30.0N  139.0E 3.5-5.1 BCAAA  Central/So. Honshu Japan   

P: 18OCT2021 137925    31.0N  141.0E 4.0-5.5 BBBAA  Off East Coast Honshu      

 

A light earthquake of M 3.7 was widely felt in central California today and was followed by several lightly felt aftershocks and a foreshock. NEIC reported the mainshock was felt with intensity II-III in Central California at Gonzales, Hollister, Salinas, San Juan Bautista, Soledad, Paicines and Castroville among others. NEIC reported the aftershock of M 2.6 in Central California was felt with intensity II-III in the area(s) of Central California at Salinas, Paicines, Marina, Los Banos and Seaside. While a similar M 3.7 hit the area on October 4 with the new moon, the last earthquake of larger magnitude in the area was an M 4.1 on August 31, 2021. Today's M 3.7 occurred within minutes of local solar midnight and was probably promoted by high tidal stresses associated with today's full moon, as was the event on October 4. Forecast 137898 had expected today's event in the region was likely around October 19.

 

O: 20OCT2021 08:52:50  36.7N  121.3W ML=2.4  EMSC   CENTRAL CALIFORNIA           

O: 20OCT2021 08:57:14  36.7N  121.4W ML=3.6  EMSC   CENTRAL CALIFORNIA

O: 20OCT2021 14:07:02  36.7N  121.3W Md=2.6  EMSC   CENTRAL CALIFORNIA

P: 19OCT2021 137898    36.2N  120.8W 2.5-4.8 AAAAA  Central California         

 

An earthquake of M 4.1-4.2 in Alberta, Canada was the largest in the U.S. or Canada today. It may have been lightly felt in this remote area of the Rocky Mountains. Five earthquakes of M>=4.1 have hit within about 150 km of this epicenter in the past 30 years - all of which were M 4.1-4.4. The last of these was an M 4.4 about 150 km southwest of today's epicenter on February 14, 2021. An M 4.3 hit nearer today's epicenter on March 10, 2019. Forecast 138012 had expected today's event this area was likely around October 18.

 

O: 21OCT2021 03:23:20  52.7N  114.5W MB=4.2  ECAN OF ROCKY MOUNTAIN HOUSE, AB 

O: 21OCT2021 03:23:24  52.7N  115.0W ML=4.1  EMSC   ALBERTA, CANADA               

P: 18OCT2021 138012    52.0N  115.0W 2.0-4.2 BAAAA  Alberta                    

 

An earthquake of M 3.4 was also felt in southeastern Idaho today.  NEIC reported this earthquake of M 3.4 in Southeastern Idaho was felt with intensity II-III in the area(s) of Southeastern Idaho in Pocatello and Hayden with IV in Montpelier and in Wyoming with III in Afton, Auburn and Freedom. The last earthquake of greater or equal magnitude within about 100 km of this epicenter was an M 4.2 on January 3, 2021. Forecast 138009 had expected enhanced seismicity in this area was likely in mid-October.

 

O: 21OCT2021 02:38:50  42.5N  111.2W ML=3.4  EMSC   SOUTHERN IDAHO

O: 21OCT2021 02:25:59  42.5N  111.2W ML=2.9  EMSC   SOUTHERN IDAHO               

P: 14OCT2021 138009    43.0N  111.5W 2.0-3.9 CAAAA  Yellowstone/Wyoming        

 

A similar M 3.4 was felt in the area of south-central Idaho in the aftershock area of the M 6.1 of March 31, 2020. This is not an unusual aftershock in this long term aftershock sequence but is the largest since an M 4.0 on October 2, 2021. Forecast 137982 had expected this event was likely around October 17.  NEIC reported this earthquake of M 3.1-3.4 in Southern Idaho was felt with intensity II-III in the area(s) of Southern Idaho at Stanley and Meridian.

 

O: 20OCT2021 07:25:52  44.1N  115.1W Ml=3.4  EMSC   SOUTHERN IDAHO               

O: 20OCT2021 15:03:06  44.3N  115.2W Ml=2.0  EMSC   SOUTHERN IDAHO

P: 17OCT2021 137982    44.4N  115.1W 2.0-4.0 BAAAA  Montana/Idaho              

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: 21OCT2021 06:05:11  27.8N   58.5E mb=4.9  EMSC   SOUTHEASTERN IRAN            

P: 17OCT2021 137888    28.0N   55.0E 3.5-5.1 BACAA  So. Iran/Persian Gulf      

 

O: 21OCT2021 00:12:23  43.9N   84.3E mb=4.6  EMSC   NORTHERN XINJIANG, CHINA     

P: 15OCT2021 137978    41.0N   82.0E 4.0-5.6 CCBAA  Kirgizstan/Xinjiang        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 20OCT2021 12:47:59   4.2S  143.3E mb=4.3  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 20OCT2021 137839     3.0S  144.0E 4.0-5.4 ABAAA  Papua New Guinea           

 

O: 20OCT2021 18:53:18   7.8S  106.5E ML=4.2  EMSC   JAVA, INDONESIA              

P: 15OCT2021 137841     9.0S  107.0E 4.0-5.4 BBAAA  So. of Java                

 

O: 20OCT2021 09:21:11   8.2S  116.8E mb=4.8  EMSC   LOMBOK REGION, INDONESIA     

P: 16OCT2021 137845     8.0S  117.0E 4.0-5.4 BAAAA  Sumbawa Island area        

 

NEIC reported this earthquake of M 4.8 in Lombok, Indonesia was felt with intensity IV in the area(s) of Lombok, Indonesia at Sumbawa.

 

O: 20OCT2021 21:48:46  18.6N  121.1E mb=4.2  EMSC   LUZON, PHILIPPINES           

P: 18OCT2021 137862    19.0N  121.0E 3.5-5.0 AAAAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 4.2 in Luzon, Philippines was felt with intensity II-III in the area(s) of Luzon, Philippines at Claveria, Cagayan Valley and Pasilquin, Ilocos.

 

CENTRAL AND SOUTH AMERICA

 

O: 20OCT2021 17:57:21  13.0N   89.5W ML=4.0  EMSC   OFFSHORE EL SALVADOR         

P: 18OCT2021 137867    13.0N   88.0W 3.5-5.5 AABAA  Nicaragua                   

 

O: 20OCT2021 08:57:30  16.4N   93.2W ML=4.1  EMSC   CHIAPAS, MEXICO              

P: 17OCT2021 137854    14.0N   93.0W 3.5-5.3 BCAAA  Chiapas, Mexico            

 

O: 20OCT2021 07:17:37  18.1N  103.3W ML=4.2  EMSC   OFFSHORE MICHOACAN, MEXICO   

P: 20OCT2021 137871    16.0N  100.0W 3.5-5.3 ABBAA  Oaxaca, Mexico             

 

O: 20OCT2021 19:37:45  18.2N   68.5W Md=3.6  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P: 20OCT2021 137872    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 20OCT2021 08:58:28  18.4N   73.5W ML=3.5  EMSC   HAITI REGION                 

O: 21OCT2021 04:23:50  18.4N   73.5W ML=3.2  EMSC   HAITI REGION

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 CAAAA  Haiti                      

 

O: 20OCT2021 09:22:53  27.4N  111.3W ML=3.4  EMSC   GULF OF CALIFORNIA           

P: 13OCT2021 137881    28.0N  112.0W 3.5-4.9 CAAAA  Gulf of California         

 

AFRICA AND EUROPE

 

O: 21OCT2021 00:45:47  28.6N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION

O: 21OCT2021 02:14:47  28.7N   17.8W ML=4.1  EMSC   CANARY ISLANDS, SPAIN REGION

O: 20OCT2021 07:45:38  28.6N   17.8W ML=3.5  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 CAAAA  Canary Islands             

 

O: 21OCT2021 08:12:58  35.2N   25.3E ML=4.3  EMSC   CRETE, GREECE                

P: 19OCT2021 137906    34.0N   24.0E 3.0-4.7 ABAAA  Crete                      

 

NEIC reported this earthquake of M 4.8 in Crete, Greece was felt with intensity II-III in the area(s) of Crete, Greece at Nea Alikarnassoc, Limin and Stalis, Iraklion.

 

O: 20OCT2021 15:05:46  38.7N   43.2E mb=4.4  EMSC   EASTERN TURKEY               

P: 15OCT2021 137960    38.0N   43.0E 3.5-5.0 BAAAA  Turkey                     

 

NEIC reported this earthquake of M 4.4 in Eastern Turkey was felt with intensity II-III in the area(s) of Eastern Turkey at Ercis and Van.

 

O: 21OCT2021 00:28:55  46.4N   13.1E ML=3.8  EMSC   NORTHERN ITALY               

P: 16OCT2021 137971    46.0N   14.0E 3.0-5.1 BAAAA  Austria                     

 

O: 21OCT2021 05:17:39  63.9N   22.2W ML=3.6  EMSC   ICELAND REGION               

P: 18OCT2021 138038    62.0N   23.0W 3.0-4.6 BBAAA  Iceland area               

 

SOUTHWEST PACIFIC

 

O: 21OCT2021 08:10:43  25.2S  179.6E mw=6.0  ANSS   Fiji                          

O: 21OCT2021 08:10:44  25.3S  179.7E Mw=6.0  EMSC   SOUTH OF FIJI ISLANDS        

P: 19OCT2021 138068    22.0S  179.0W 4.0-5.6 ACAAA  Tonga Islands              

P: 19OCT2021 138069    23.0S  179.0E 4.0-5.4 ACAAA  Tonga/Fiji                  

 

O: 21OCT2021 03:37:20  16.8S  172.8W mb=4.8  EMSC   SAMOA ISLANDS REGION         

P: 12OCT2021 138057    17.0S  172.0W 4.0-5.7 CAAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 20OCT2021 19:37:07  57.7S   25.2W mb=4.9  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 14OCT2021 138085    57.0S   26.0W 4.0-5.8 CAAAA  So. Sandwich Islands       

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 21OCT2021 03:10:49  34.3S  179.2E ML=4.3  EMSC   SOUTH OF KERMADEC ISLANDS    

O: 21OCT2021 08:12:01  32.6S  178.7E ML=4.7  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 18OCT2021 138076    32.0S  179.0E 4.0-5.5 BAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 21OCT2021 08:36:47  32.1N  138.2E Mw=5.5  EMSC   IZU ISLANDS, JAPAN REGION    

P: 17OCT2021 137904    30.0N  139.0E 3.5-5.1 BCAAA  Central/So. Honshu Japan   

P: 18OCT2021 137925    31.0N  141.0E 4.0-5.5 BBBAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 21OCT2021 05:49:41  31.3N  114.4W ML=4.1  EMSC   GULF OF CALIFORNIA           

P: 15OCT2021 137930    31.0N  114.3W 2.5-4.7 CAAAA  So. California             

 

O: 20OCT2021 20:07:18  31.4N  115.6W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO      

P: 17OCT2021 137929    31.9N  116.3W 2.5-4.7 BAAAA  So. California             

 

O: 21OCT2021 00:50:55  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 15OCT2021 137932    32.8N  116.0W 2.5-4.7 CAAAA  So. California             

 

O: 20OCT2021 23:39:43  35.6N  117.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

O: 20OCT2021 21:27:17  36.1N  117.8W Ml=2.0  EMSC   CENTRAL CALIFORNIA           

P: 19OCT2021 137945    35.7N  118.1W 2.5-4.7 AAAAA  So. California             

 

O: 20OCT2021 08:52:50  36.7N  121.3W ML=2.4  EMSC   CENTRAL CALIFORNIA           

O: 20OCT2021 08:57:14  36.7N  121.4W ML=3.6  EMSC   CENTRAL CALIFORNIA

O: 20OCT2021 14:07:02  36.7N  121.3W Md=2.6  EMSC   CENTRAL CALIFORNIA

P: 19OCT2021 137898    36.2N  120.8W 2.5-4.8 AAAAA  Central California         

 

O: 20OCT2021 22:03:37  37.5N  115.4W ml=2.1  EMSC   NEVADA                       

P: 20OCT2021 137895    37.1N  117.8W 2.5-4.7 AACAA  California/Nevada area     

 

O: 20OCT2021 12:36:13  38.6N  119.5W Md=2.4  EMSC   CENTRAL CALIFORNIA           

P: 16OCT2021 137897    38.8N  119.6W 2.5-4.4 BAAAA  California/Nevada area     

 

O: 21OCT2021 04:56:12  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 18OCT2021 137901    38.7N  122.7W 2.5-4.6 BAAAA  Central California         

 

O: 20OCT2021 19:27:16  40.5N  124.0W Ml=2.4  EMSC   NORTHERN CALIFORNIA          

P: 17OCT2021 137993    40.2N  124.2W 2.5-4.6 BAAAA  Off Coast of No. Calif     

 

O: 20OCT2021 09:46:06  40.6N  122.4W Md=2.2  EMSC   NORTHERN CALIFORNIA           

P: 19OCT2021 137992    40.6N  122.4W 2.5-4.6 AAAAA  Northern California        

 

ALASKA

 

O: 21OCT2021 08:24:43  55.3N  155.4W ml=4.2  EMSC   SOUTH OF ALASKA              

P: 18OCT2021 138011    55.7N  157.9W 3.5-4.9 BABAA  Alaska Peninsula            

 

O: 21OCT2021 03:31:02  55.5N  131.3W ML=3.0  EMSC   SOUTHEASTERN ALASKA          

P: 14OCT2021 138027    58.0N  136.0W 3.0-4.6 CCBAA  Southeast Alaska           

 

O: 20OCT2021 13:31:14  62.1N  149.7W ml=3.4  EMSC   CENTRAL ALASKA               

P: 20OCT2021 138036    62.8N  149.1W 3.2-5.3 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.4 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska in Chugiak, Anchorage, Skwentna and IV in Eagle River.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 21OCT2021 03:23:20  52.7N  114.5W MB=4.1  ECAN OF ROCKY MOUNTAIN HOUSE, AB 

O: 21OCT2021 03:23:24  52.7N  115.0W ML=4.1  EMSC   ALBERTA, CANADA              

P: 18OCT2021 138012    52.0N  115.0W 2.0-4.2 BAAAA  Alberta                    

 

O: 19OCT2021 21:49:44  60.0N  138.1W MB=3.5  ECAN Haines Junction, YT            

P: 14OCT2021 138027    58.0N  136.0W 3.0-4.6 BBAAA  Southeast Alaska           

 

O: 19OCT2021 21:11:18  50.2N  130.2W MB=3.5  ECAN Port Alice, BC                 

P: 18OCT2021 138005    49.9N  130.2W 2.8-5.3 AAAAA  Vancouver Island area      

 

O: 19OCT2021 14:56:29  49.7N  123.6W MB=2.6  ECAN Sechelt, BC                    

P: 15OCT2021 138008    48.9N  122.1W 2.0-4.2 BABAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 20OCT2021 08:18:05  31.7N  104.0W ML=2.3  EMSC   WESTERN TEXAS

O: 20OCT2021 10:34:11  31.7N  104.0W ML=2.1  EMSC   WESTERN TEXAS

O: 20OCT2021 16:16:54  31.8N  104.6W ML=2.3  EMSC   WESTERN TEXAS

O: 20OCT2021 08:03:26  31.7N  104.3W ML=2.9  EMSC   WESTERN TEXAS                

 

O: 21OCT2021 02:38:50  42.5N  111.2W ML=3.4  EMSC   SOUTHERN IDAHO

O: 21OCT2021 02:25:59  42.5N  111.2W ML=2.9  EMSC   SOUTHERN IDAHO               

P: 14OCT2021 138009    43.0N  111.5W 2.0-3.9 CAAAA  Yellowstone/Wyoming        

 

O: 20OCT2021 07:25:52  44.1N  115.1W Ml=3.4  EMSC   SOUTHERN IDAHO               

O: 20OCT2021 15:03:06  44.3N  115.2W Ml=2.0  EMSC   SOUTHERN IDAHO

P: 17OCT2021 137982    44.4N  115.1W 2.0-4.0 BAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 21OCT2021 07:25:05  35.1N   96.1W ML=2.3  EMSC   OKLAHOMA

O: 20OCT2021 22:04:16  35.1N   96.1W ML=2.2  EMSC   OKLAHOMA                     

P: 17OCT2021 137955    36.0N   97.0W 2.0-4.1 BAAAA  Southern Plains             

 

HAWAII

 

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

 

SOUTHWEST PACIFIC ACTIVE

 

EARTHQUAKE SUMMARY FOR OCTOBER 19, 2021

 

The strongest earthquake in the world today was an M 5.6 in Tonga. NEIC reported it was felt with maximum intensity V in Tonga at Haveloloto; IV in Nuku'alofa and III in Tofoa-Koloua, Tonagtapu. The last earthquake within about 200 km of this epicenter with M>=5.6 occurred as an M 5.9 on September 5, 2021 about 100 km southeast of today's epicenter. Forecast 138067 had expected this earthquake was likely around October 18. This event occurred within about an hour of local solar midnight and was probably promoted by high tidal stresses which maximize near this hour.

 

O: 19OCT2021 10:28:45  21.3S  175.8W mb=5.0  EMSC   TONGA                        

O: 19OCT2021 10:28:45  21.3S  175.8W mb=5.6  ANSS   TONGA                        

P: 18OCT2021 138067    20.0S  174.0W 4.0-5.8 ABBAA  Tonga Islands              

 

An earthquake of M 5.1 also occurred today in the Santa Cruz Islands north of

Vanuatu. It was not reported felt in this remote area. An M 5.4 hit about 100 km north of this on September 12, 2021.  NEIC reported this earthquake of M 5.1 in the Santa Cruz Islands was felt with intensity II-III in the area(s) of the Solomon Islands at Kirakira Makira and Ulawa.  Forecasts 138059 and 138052 had expected enhanced seismicity in this region was likely in mid-October.

 

O: 20OCT2021 06:38:28  11.8S  166.8E mb=5.1  EMSC   SANTA CRUZ ISLANDS           

P: 15OCT2021 138059    11.0S  165.0E 4.0-5.4 BABAA  Vanuatu Islands            

P: 19OCT2021 138052    11.0S  162.0E 4.0-5.5 AACAA  Vanuatu Islands            

 

A moderate earthquake of M 4.7-5.3 also occurred south of New Zealand in the Snares Island area today. GEONET reported this earthquake was felt by five persons, four with weak intensity and 1 with moderate shaking. The last earthquake in the Snare's Island area of New Zealand with M>=5.3 occurred on November 24, 2018 with M 5.8. A strong quake of M 6.6 occurred on July 11, 2017. Forecast 138081 had expected today's activity was likely around October 17.

 

O: 19OCT2021 21:11:17  47.1S  165.7E mb=4.7  EMSC   OFF W. COAST OF S. ISLAND, N.Z

O: 19OCT2021 21:11:22  46.8S  165.8E ML=5.3  GEONET Felt by five persons,

P: 17OCT2021 138081    45.0S  168.0E 3.0-5.1 ACBAA  So. Island, N.Z.           

 

The strongest earthquake in the U.S. or Canada today was an M 4.9 in the Rat Islands, Aleutians, Alaska. It was not reported felt in this remote area. The last earthquake within about 200 km of this epicenter in the Rat Islands with M>=4.9 occurred on July 11, 2021 with M 5.4 and 5.1. Today's earthquake occurred within about 30 minutes of local solar noon and may have been promoted by high tidal stresses which maximize near this hour. Forecast  138024 had expected today in this region was likely around October 17. 

 

O: 19OCT2021 23:30:05  50.3N  178.7E mb=4.9  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 17OCT2021 138024    52.0N  177.0E 4.0-5.8 ABAAA  Rat 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: 20OCT2021 01:05:00  43.2N   77.6E mb=4.0  EMSC   EASTERN KAZAKHSTAN           

P: 15OCT2021 137978    40.0N   75.0E 4.0-5.6 BCBAA  Kirgizstan/Xinjiang        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 20OCT2021 06:10:49   2.3S  139.2E mb=4.9  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 19OCT2021 137847     2.0S  139.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O: 19OCT2021 13:03:36   3.9S  136.0E ML=4.4  EMSC   PAPUA, INDONESIA             

P: 13OCT2021 137846     2.0S  135.0E 4.0-5.5 CBAAA  West Irian, PNG            

 

O: 19OCT2021 23:30:51   5.0N  125.9E ML=4.2  EMSC   MINDANAO, PHILIPPINES        

P: 20OCT2021 137824     4.0N  125.0E 4.0-5.4 AAAAA  Mindanao, Philippines      

 

O: 19OCT2021 22:12:24  11.0N  124.8E mb=4.4  EMSC   LEYTE, PHILIPPINES           

P: 18OCT2021 137861    12.0N  122.0E 3.5-5.0 AACAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 4.4 in Leyte, Philippines was felt with intensity II-III in the area(s) of Leyte, Philippines in Dagami, Eastern Visayas.

 

O: 20OCT2021 03:28:30  21.8N  144.5E mb=4.9  EMSC   MARIANA ISLANDS REGION       

P: 13OCT2021 137892    20.0N  146.0E 4.0-5.4 CBBAA  Volcano Islands            

 

CENTRAL AND SOUTH AMERICA

 

O: 19OCT2021 17:58:58   8.5N   83.0W ML=4.0  EMSC   PANAMA-COSTA RICA BORDER REGION

O: 19OCT2021 19:53:26   8.1N   83.2W mb=4.5  EMSC   COSTA RICA                   

P: 19OCT2021 137821     9.0N   84.0W 3.5-4.9 AAAAA  Costa Rica                 

 

NEIC reported this earthquake of M 4.5 in Costa Rica was felt with intensity II-III in the area(s) of Panama at Volcan, Chiriqui.

 

O: 19OCT2021 23:22:09  10.9N   86.3W ML=3.9  EMSC   OFF COAST OF COSTA RICA      

P: 20OCT2021 137866    11.0N   87.0W 3.5-5.3 AAAAA  Nicaragua                  

 

O: 19OCT2021 19:01:11  15.6N   93.6W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 19OCT2021 18:34:56  15.5N   93.6W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 17OCT2021 137854    14.0N   93.0W 3.5-5.3 ABAAA  Chiapas, Mexico            

 

O: 19OCT2021 08:17:03  15.8N   95.0W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 17OCT2021 137870    15.0N   96.0W 3.5-5.6 AAAAA  Oaxaca, Mexico             

 

O: 19OCT2021 20:02:59  16.3N   98.0W ML=4.1  EMSC   OAXACA, MEXICO               

P: 19OCT2021 137870    16.0N   98.0W 3.5-5.4 AAAAA  Oaxaca, Mexico             

 

O: 19OCT2021 15:24:23  18.0N   66.8W Md=3.1  EMSC   PUERTO RICO REGION           

P: 20OCT2021 137872    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 19OCT2021 21:57:23  18.5N   73.7W ML=3.1  EMSC   HAITI REGION                 

O: 19OCT2021 14:15:36  19.7N   72.3W ML=3.1  EMSC   HAITI REGION

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 BAAAA  Haiti                      

 

O: 19OCT2021 08:01:23  18.7N   65.1W Md=3.4  EMSC   VIRGIN ISLANDS REGION        

O: 19OCT2021 07:40:34  19.3N   67.3W Md=3.5  EMSC   PUERTO RICO REGION           

O: 19OCT2021 22:28:42  19.4N   67.1W Md=3.0  EMSC   PUERTO RICO REGION

P: 18OCT2021 137873    19.0N   66.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 19OCT2021 12:17:52  19.7N   70.8W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 16OCT2021 137874    19.0N   71.0W 3.4-4.9 BAAAA  Dominican Republic         

 

O: 19OCT2021 18:37:55  27.7S   71.2W Mw=4.2  EMSC   OFFSHORE ATACAMA, CHILE      

P: 14OCT2021 138061    29.0S   70.0W 4.0-5.6 BBAAA  Coast Central Chile        

 

NEIC reported this earthquake of M 4.2 in Atacama, Chile was felt with intensity II-III in the area(s) of Atacama, Chile at Copiapo.

 

O: 20OCT2021 01:21:27  45.7S   77.8W mb=4.2  EMSC   OFF COAST OF AISEN, CHILE    

P: 14OCT2021 138077    43.0S   83.0W 4.0-5.8 CCCAA  Chile Rise                 

 

AFRICA AND EUROPE

 

O: 19OCT2021 18:08:39  12.8S   45.6E ML=3.3  EMSC   MAYOTTE REGION               

P: 18OCT2021 138051    12.0S   45.0E 3.0-4.6 AAAAA  Madagascar area            

 

O: 19OCT2021 21:47:58  28.7N   17.8W ML=4.5  EMSC   CANARY ISLANDS, SPAIN REGION

O: 19OCT2021 14:10:15  28.6N   17.8W ML=4.3  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 BAAAA  Canary Islands             

 

O: 19OCT2021 17:43:32  37.0N    5.3W ML=4.1  EMSC   SPAIN                        

P: 17OCT2021 137914    37.0N    4.0W 3.5-5.4 AAAAA  Morocco/Spain              

 

O: 20OCT2021 02:44:05  35.0N   25.3E mb=4.3  EMSC   CRETE, GREECE                

P: 19OCT2021 137906    34.0N   24.0E 3.0-4.7 AAAAA  Crete                       

 

NEIC reported this earthquake of M 4.3 in Greece was felt with intensity II-III in the area(s) of Greece at Dafnes, Gournai, Khanion tou Kokkini, Kato Govai, Limin Khersonisou, Stalis, Anissarias, Ilea Alkarnossos, Gazion, Iraklion.

 

O: 20OCT2021 04:45:43  43.2N   45.7E mb=4.7  EMSC   CAUCASUS REGION, RUSSIA      

P: 15OCT2021 137960    38.0N   43.0E 3.5-5.0 BCBAA  Turkey                     

 

NEIC reported this earthquake of M 4.7 in the Caucasus was felt with intensity II-III in the area(s) of the Caucasus, Russia with IV in Starja Sunza Cacenja and Nalchik Kabardino-Balkaria.

 

SOUTHWEST PACIFIC

 

O: 20OCT2021 06:38:28  11.8S  166.8E mb=5.1  EMSC   SANTA CRUZ ISLANDS           

P: 15OCT2021 138059    11.0S  165.0E 4.0-5.4 BABAA  Vanuatu Islands            

P: 19OCT2021 138052    11.0S  162.0E 4.0-5.5 AACAA  Vanuatu Islands            

 

O: 19OCT2021 10:18:19  15.2S  177.7W mb=4.1  EMSC   FIJI REGION                  

P: 18OCT2021 138053    15.0S  177.0W 4.0-5.4 AAAAA  Samoa Islands              

 

O: 19OCT2021 10:28:45  21.3S  175.8W mb=5.0  EMSC   TONGA                        

P: 18OCT2021 138067    20.0S  174.0W 4.0-5.8 ABBAA  Tonga Islands              

 

 

OCEAN RIDGES

 

O: 20OCT2021 01:02:58  58.5S   24.3W mb=4.8  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 14OCT2021 138085    57.0S   26.0W 4.0-5.8 CBAAA  So. Sandwich Islands       

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 19OCT2021 21:11:17  47.1S  165.7E mb=4.7  EMSC   OFF W. COAST OF S. ISLAND, N.Z

O: 19OCT2021 21:11:22  46.8S  165.8E ML=5.3  GEONET Felt by five persons,

P: 17OCT2021 138081    45.0S  168.0E 3.0-5.1 ACBAA  So. Island, N.Z.           

 

GEONET reported this earthquake was felt by five persons, four with weak intensity and 1 with moderate shaking.

 

JAPAN AND KURIL ISLANDS

 

O: 19OCT2021 22:10:48  41.6N  142.9E mb=4.5  EMSC   HOKKAIDO, JAPAN REGION

O: 19OCT2021 15:18:19  41.7N  142.8E mb=4.5  EMSC   HOKKAIDO, JAPAN REGION

O: 19OCT2021 12:36:39  41.6N  142.9E Mw=5.1  EMSC   HOKKAIDO, JAPAN REGION       

P: 17OCT2021 137975    40.0N  142.0E 3.5-5.6 ABAAA  Hokkaido, Japan            

 

NEIC reported these earthquakes of M 5.1 and 4.5 in Hokkaido, Japan were felt with intensity II-III in the area(s) of Hokkaido, Japan at Misawa, Aomori, Citose and Otofuke.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 19OCT2021 21:49:58  31.1N  115.0W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO      

P: 17OCT2021 137929    31.9N  116.3W 2.5-4.7 AAAAA  So. California             

 

O: 19OCT2021 19:11:09  33.7N  116.8W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 19OCT2021 18:11:45  33.7N  116.8W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 14OCT2021 137935    33.9N  116.9W 2.5-4.4 BAAAA  So. California              

 

NEIC reported this earthquake of M 2.8 in Southern California was felt with intensity II-III in the area(s) of Southern California at Idyllwild, Aguanga, Hemet, Palm Springs, Sun City.

 

O: 20OCT2021 01:15:34  36.2N  117.9W ML=2.6  EMSC   CENTRAL CALIFORNIA

O: 20OCT2021 03:18:22  36.4N  117.8W ML=2.1  EMSC   CENTRAL CALIFORNIA

O: 19OCT2021 19:27:45  36.2N  117.9W Ml=2.0  EMSC   CENTRAL CALIFORNIA           

P: 19OCT2021 137945    35.7N  118.1W 2.5-4.7 AAAAA  So. California             

 

O: 19OCT2021 13:56:35  36.6N  121.2W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P: 19OCT2021 137898    36.2N  120.8W 2.5-4.8 AAAAA  Central California         

 

O: 19OCT2021 08:11:24  38.1N  118.9W Md=2.3  EMSC   CENTRAL CALIFORNIA           

O: 20OCT2021 00:18:08  38.1N  118.8W ML=2.4  EMSC   CENTRAL CALIFORNIA

P: 15OCT2021 137896    37.3N  118.3W 2.5-4.9 BAAAA  California/Nevada area     

 

O: 19OCT2021 09:29:09  38.4N  119.6W ml=2.6  EMSC   CENTRAL CALIFORNIA

O: 19OCT2021 18:27:54  38.5N  119.5W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 16OCT2021 137897    38.8N  119.6W 2.5-4.4 BAAAA  California/Nevada area     

 

O: 20OCT2021 05:20:51  38.8N  122.8W Md=2.7  EMSC   NORTHERN CALIFORNIA          

O: 20OCT2021 04:05:04  38.8N  122.8W Ml=3.4  EMSC   NORTHERN CALIFORNIA          

P: 18OCT2021 137901    38.7N  122.7W 2.5-4.6 AAAAA  Central California         

 

NEIC reported this earthquake of M 3.4 in the Geysers, northern California was felt with intensity II-III in the area(s) of the Geysers, northern California in Geyserville, Middletown, Kelseyville, HJealdsburg, Calistoga, Forestville, Sant Rosa and Saint Helena.

 

 

ALASKA

 

 

O: 19OCT2021 23:30:05  50.3N  178.7E mb=4.9  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 17OCT2021 138024    52.0N  177.0E 4.0-5.8 ABAAA  Rat Islands                

 

O: 19OCT2021 23:18:15  56.8N  155.9W ML=3.0  EMSC   ALASKA PENINSULA

O: 19OCT2021 20:25:53  56.2N  156.6W ML=3.1  EMSC   ALASKA PENINSULA             

P: 18OCT2021 138011    55.7N  157.9W 3.5-4.9 AAAAA  Alaska Peninsula            

 

O: 19OCT2021 18:17:23  58.9N  142.9W ml=3.8  EMSC   GULF OF ALASKA               

P: 17OCT2021 138032    60.2N  147.1W 3.2-5.1 AABAA  Central Alaska             

 

O: 19OCT2021 08:24:50  59.8N  152.9W ML=3.1  EMSC   SOUTHERN ALASKA               

P: 15OCT2021 138031    60.0N  153.5W 3.2-5.4 BAAAA  Central Alaska             

 

O: 19OCT2021 08:06:28  62.7N  149.6W mb=3.9  EMSC   CENTRAL ALASKA               

P: 18OCT2021 138035    62.7N  149.3W 3.2-5.3 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.9 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska in Willow, Wasilla, Chugiak, Palmer, Anchorage and Girdwood with IV in Talkeetna.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 19OCT2021 14:56:27  49.7N  123.6W ML=2.5  EMSC   BRITISH COLUMBIA, CANADA     

P: 12OCT2021 138008    49.0N  123.0W 2.0-4.1 CAAAA  Washington state, U.S.     

 

NEIC reported this earthquake of M 2.5 in British Columbia was felt with intensity II-III in the area(s) of British Columbia at Sechelt and Vancouver.

 

O: 19OCT2021 21:49:44  60.1N  138.2W ML=3.4  EMSC   SOUTHERN YUKON TERRITORY, CANA

O: 19OCT2021 21:49:44  60.0N  138.1W MB=3.5  ECAN Haines Junction, YT            

P: 14OCT2021 138027    58.0N  136.0W 3.0-4.6 BBAAA  Southeast Alaska           

 

O: 19OCT2021 21:11:18  50.2N  130.2W MB=3.5  ECAN Port Alice, BC                 

P: 18OCT2021 138005    49.9N  130.2W 2.8-5.3 AAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 19OCT2021 22:09:26  31.7N  104.0W mb=2.8  EMSC   WESTERN TEXAS

O: 19OCT2021 23:32:18  31.7N  104.0W ML=2.7  EMSC   WESTERN TEXAS

O: 19OCT2021 11:45:27  32.0N  103.9W ML=2.0  EMSC   WESTERN TEXAS

O: 19OCT2021 08:23:47  31.6N  104.0W ML=2.4  EMSC   WESTERN TEXAS                

 

EASTERN U.S./CANADA

 

No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.

 

HAWAII

 

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

 

STRONG QUAKE IN EASTERN MEDITERRANEAN

 

EARTHQUAKE SUMMARY FOR OCTOBER 18, 2021

 

The strongest earthquake in the world today was an M 5.9-6.1 in the eastern Mediterranean south of Greece. NEIC reported it was felt with maximum intensity VI in the Dodecanese Islands at Karpathos and V in Falirakion and II-III in Afantou, Koskinou, Lilisos, Kremasti, Rodoa, and in Turkey at Fethiye and Marmara. This may be a regional aftershock of an earthquake of M 6.4 which hit Crete a week ago on October 12, 2012 but is about 200 km to the southeast of that epicenter. The last earthquake of larger size in this region was an M 6.4 on July 15, 2008, the only such event in this area of larger or equal size in the past 30 years. Forecast 137906 had expected today's event was likely in this region around October 13. This epicenter is at 147 degrees from the M 7.2  in Vanuatu of October 2 and may have been promoted by energy from that source.

 

O: 19OCT2021 05:32:32  34.6N   28.3E Mw=6.0  EMSC   EASTERN MEDITERRANEAN SEA    

P: 13OCT2021 137906    34.0N   27.0E 3.0-5.6 CAAAA  Crete                      

 

The eruption of Cumbre Viejo continued today with strong lava fountains from the cone in the Canary Islands. The largest earthquake in the area today was an M 4.2. Larger earthquakes are possible with this eruption as the lava flows continue through new vents. Forecast 137880 had expected enhanced seismicity in the area in mid-October.

 

O: 19OCT2021 01:29:35  28.6N   17.9W ML=3.8  EMSC   CANARY ISLANDS, SPAIN REGION 

O: 18OCT2021 11:33:54  28.6N   17.8W ML=4.2  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary Islands             

 

A strong earthquake of M 6.1 also occurred today in northern Vanuatu. NEIC reported it was felt with maximum intensity V in Sola Torba, Vanuatu with IV in Port Olry, Sanma and III in Luganville. This is the strongest earthquake within about 100 km of this epicenter since an M 6.1 on March 18, 2020 but the last of stronger magnitude in the region was an M 6.6 on January 15, 2019. Forecast 138059 had expected this activity in this region was likely around October 14.

 

O: 18OCT2021 07:26:52  13.7S  167.0E Mw=6.1  EMSC   VANUATU                      

P: 14OCT2021 138059    15.0S  167.0E 4.0-5.4 BBAAA  Vanuatu Islands            

 

An unusual earthquake in the Yukon Territory of Canada also occurred today with M 4.4-4.8. This is the strongest earthquake within about 200 km of this epicenter in the Northern Yukon since an M 6.0 about 100 km to the west occurred on December 22, 2017. Forecast 138044 had expected this event was likely within in this area around October 15. This epicenter is at 144 degrees from the M 8.1 in the South Sandwich Islands of August 12, 2021 and was likely promoted by energy from  that source.

 

 

O: 18OCT2021 07:35:38  65.3N  133.4W ML=4.8  EMSC   NORTHERN YUKON TERRITORY, CANADA

O: 18OCT2021 15:17:49  65.3N  133.4W ML=3.9  EMSC   NORTHERN YUKON TERRITORY, CANADA

O: 18OCT2021 15:17:49  65.2N  133.3W MB=3.9  ECAN Keno, YT    

O: 18OCT2021 07:35:38  65.3N  132.9W MB=4.4  ECAN OF ELSA, YT   

O: 18OCT2021 07:35:38  65.3N  133.4W MB=4.8  ECAN Keno, YT    

O: 18OCT2021 09:10:05  65.2N  133.6W MB=3.5  ECAN Keno, YT    

O: 18OCT2021 09:10:05  65.2N  133.6W ML=3.5  EMSC   NORTHERN YUKON TERRITORY, CANA

P: 17OCT2021 138041    66.9N  135.8W 3.0-4.6 ABAAA  Northern Alaska            

 

An M 3.4 was widely felt in central California today near Coalinga. NEIC reported intensity II-III with this quake was felt in Coalinga, Huron, Lemoore, Visalia, Clovis, Los Banos, San Juan Bautista. This area has seen four earthquakes of M>=3.4 in the past year - the largest of which was an M 3.8 on September 14, 2021. Forecast 137898 had expected today's event was likely within about 25 km of this epicenter around October 17.

 

O: 19OCT2021 06:49:25  36.0N  119.8W Md=2.3  EMSC   CENTRAL CALIFORNIA           

O: 18OCT2021 09:42:15  36.2N  120.2W ML=2.6  EMSC   CENTRAL CALIFORNIA

O: 18OCT2021 09:45:06  36.2N  120.2W ML=3.4  EMSC   CENTRAL CALIFORNIA           

P: 17OCT2021 137898    36.1N  120.1W 2.5-4.8 AAAAA  Central 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: 18OCT2021 08:11:30  27.9N   85.8E ML=4.7  EMSC   NEPAL

O: 18OCT2021 09:35:30  27.9N   85.8E ML=4.1  EMSC   NEPAL

O: 18OCT2021 09:38:30  27.9N   85.8E ML=4.0  EMSC   NEPAL

O: 18OCT2021 08:01:37  27.9N   85.8E mb=4.3  EMSC   NEPAL                        

O: 18OCT2021 10:32:12  28.4N   87.2E mb=4.5  EMSC   WESTERN XIZANG               

P: 18OCT2021 137966    30.0N   83.0E 3.8-5.4 ABCAA  Xizang                     

 

O: 18OCT2021 07:21:20  37.5N   72.2E mb=4.4  EMSC   TAJIKISTAN                   

P: 14OCT2021 137909    37.0N   71.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

O: 18OCT2021 23:57:59  50.5N   96.5E mb=4.2  EMSC   SOUTHWESTERN SIBERIA, RUSSIA 

P: 14OCT2021 137981    46.0N   96.0E 4.0-5.6 BCAAA  Mongolia                    

 

O: 18OCT2021 08:24:31  54.0N  158.6E Mw=5.2  EMSC   KAMCHATKA PENINSULA, RUSSIA  

P: 20OCT2021 138017    54.0N  162.0E 4.0-5.4 AABAA  E. of Kamchatka            

 

O: 19OCT2021 04:48:47  63.4N  157.8E mb=4.1  EMSC   MAGADANSKAYA OBLAST', RUSSIA 

 

INDONESIA AND PHILIPPINES

 

O: 18OCT2021 16:29:20   1.1N  128.1E ML=4.4  EMSC   HALMAHERA, INDONESIA         

O: 18OCT2021 07:03:50   2.7N  128.1E mb=4.7  EMSC   HALMAHERA, INDONESIA         

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 AABAA  Mindanao, Philippines      

 

O: 19OCT2021 00:37:34   3.7S  134.7E mb=4.7  EMSC   PAPUA, INDONESIA             

P: 13OCT2021 137846     2.0S  135.0E 4.0-5.5 CBAAA  West Irian, PNG            

 

O: 18OCT2021 16:18:54   5.5S  147.1E mb=4.3  EMSC   EASTERN NEW GUINEA REG., P.N.G

P: 12OCT2021 137835     7.0S  146.0E 4.0-5.4 CBAAA  New Ireland                

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 19OCT2021 06:32:20   9.3N   84.7W mb=4.6  EMSC   COSTA RICA                   

P: 19OCT2021 137821     9.0N   84.0W 3.5-4.9 AAAAA  Costa Rica                 

 

NEIC reported these earthquakes of M 4.4 and 4.6 in Costa Rica were felt with intensity II-III in the area(s) of Costa Rica in Puntarenas at Jaco, Quepos and Paquera.

 

O: 19OCT2021 05:13:07   9.5N   86.0W mb=4.4  EMSC   OFF COAST OF COSTA RICA      

P: 20OCT2021 137866    11.0N   87.0W 3.5-5.3 ABAAA  Nicaragua                  

 

O: 18OCT2021 11:16:00  12.3N   88.1W mb=4.4  EMSC   NEAR COAST OF NICARAGUA      

P: 18OCT2021 137867    13.0N   88.0W 3.5-5.5 AAAAA  Nicaragua                  

 

O: 18OCT2021 21:44:04  15.1N   94.5W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 17OCT2021 137870    15.0N   96.0W 3.5-5.6 AABAA  Oaxaca, Mexico             

 

O: 18OCT2021 21:08:24  14.6N   93.7W mb=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 18OCT2021 22:31:01  15.2N   92.5W mb=4.2  EMSC   CHIAPAS, MEXICO              

P: 15OCT2021 137857    15.0N   92.0W 3.5-5.1 BAAAA  Guatemala                  

P: 17OCT2021 137854    14.0N   93.0W 3.5-5.3 ABAAA  Chiapas, Mexico            

 

O: 19OCT2021 06:45:01  16.0N   96.8W ML=4.2  EMSC   OAXACA, MEXICO

O: 18OCT2021 23:23:49  15.6N   96.0W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO      

P: 17OCT2021 137870    15.0N   96.0W 3.5-5.6 AAAAA  Oaxaca, Mexico             

 

O: 18OCT2021 18:10:22  16.1N   98.3W mb=4.3  EMSC   OFFSHORE OAXACA, MEXICO      

P: 19OCT2021 137870    16.0N   98.0W 3.5-5.4 AAAAA  Oaxaca, Mexico             

 

NEIC reported this earthquake of M 4.3 in Guerrero, Mexico was felt with intensity II-III in the area(s) of Tlalnepantla, Mexico.

 

O: 18OCT2021 07:26:36  17.2S   70.5W mb=4.0  EMSC   SOUTHERN PERU                

P: 16OCT2021 138056    18.0S   71.0W 4.0-5.7 AAAAA  So. Peru/Bolivia           

 

O: 18OCT2021 23:58:07  18.2N   66.8W Md=3.2  EMSC   PUERTO RICO                  

P: 20OCT2021 137872    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 19OCT2021 02:44:20  18.5N   73.4W ML=3.3  EMSC   HAITI REGION

O: 18OCT2021 08:54:34  18.9N   72.8W ML=3.0  EMSC   HAITI REGION

O: 19OCT2021 04:20:31  19.0N   73.9W ML=3.9  EMSC   HAITI REGION

O: 18OCT2021 10:45:03  18.5N   73.7W ML=3.4  EMSC   HAITI REGION                 

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 BAAAA  Haiti                      

 

O: 18OCT2021 20:56:25  18.7N   67.3W Md=3.2  EMSC   PUERTO RICO REGION           

O: 18OCT2021 13:45:23  18.7N   68.0W Md=3.3  EMSC   DOMINICAN REPUBLIC REGION    

O: 18OCT2021 08:14:19  18.8N   67.3W Md=3.2  EMSC   PUERTO RICO REGION

P: 20OCT2021 137872    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 19OCT2021 02:22:35  19.2N   66.5W Md=3.4  EMSC   PUERTO RICO REGION           

P: 18OCT2021 137873    19.0N   66.0W 3.4-5.1 AAAAA  Puerto Rico                 

 

O: 19OCT2021 01:12:37  19.3N   65.1W Md=3.7  EMSC   VIRGIN ISLANDS REGION        

P: 17OCT2021 137859    19.0N   65.0W 3.0-5.2 AAAAA  Leeward Islands            

 

O: 18OCT2021 23:22:13  19.3N   69.5W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P: 16OCT2021 137874    19.0N   71.0W 3.4-4.9 AABAA  Dominican Republic         

 

O: 18OCT2021 11:27:12  24.1S   67.2W mb=4.5  EMSC   SALTA, ARGENTINA             

P: 17OCT2021 138060    24.0S   68.0W 4.0-5.4 AAAAA  Argentina                  

 

O: 18OCT2021 09:12:47  28.5S   62.9W mb=4.1  EMSC   SANTIAGO DEL ESTERO, ARGENTINA

P: 14OCT2021 138061    29.0S   70.0W 4.0-5.6 BADAA  Coast Central Chile        

 

O: 19OCT2021 00:03:33  31.6S   72.1W mb=4.6  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 14OCT2021 138070    33.0S   72.0W 4.0-5.7 BBAAA  Central Chile              

 

NEIC reported this earthquake of M 4.6 in Central Chile was felt with intensity II-III in the area(s) of Central Chile at Illapel, Coquimbo, and in Valparaiso at Vina del Mar and Quilpue.

 

O: 18OCT2021 18:32:15  45.7S   77.1W mb=4.7  EMSC   OFF COAST OF AISEN, CHILE

O: 18OCT2021 22:23:37  45.6S   77.1W Mw=5.1  EMSC   OFF COAST OF AISEN, CHILE    

P: 14OCT2021 138077    43.0S   83.0W 4.0-5.8 BCCAA  Chile Rise                 

 

 

NEIC reported the earthquake of M 5.1 in Aisen, Chile was felt with intensity II-III in the area(s) of Aisen, Chile at Coihaque.

NEIC reported the earthquake of M 4.3 in Nepal was felt with intensity II-III in the area(s) of Nepal in Banepa, Tribuvannagar and Malangwa.

 

 

AFRICA AND EUROPE

 

O: 18OCT2021 20:20:53  12.8S   45.6E ML=3.4  EMSC   MAYOTTE REGION               

P: 18OCT2021 138051    12.0S   45.0E 3.0-4.6 AAAAA  Madagascar area            

 

O: 19OCT2021 01:29:35  28.6N   17.9W ML=3.8  EMSC   CANARY ISLANDS, SPAIN REGION 

O: 18OCT2021 11:33:54  28.6N   17.8W ML=4.2  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary Islands             

 

O: 19OCT2021 05:32:32  34.6N   28.3E Mw=6.0  EMSC   EASTERN MEDITERRANEAN SEA    

P: 13OCT2021 137906    34.0N   27.0E 3.0-5.6 CAAAA  Crete                      

 

 

SOUTHWEST PACIFIC

 

O: 19OCT2021 00:16:23  16.0S  174.8W mb=4.3  EMSC   TONGA                        

P: 12OCT2021 138053    15.0S  173.0W 4.0-5.4 CABAA  Samoa Islands              

 

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

 

OCEAN RIDGES

 

O: 19OCT2021 01:42:28  58.0S   25.4W mb=4.7  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 12OCT2021 138085    58.0S   26.0W 4.0-5.6 CAAAA  So. Sandwich Islands       

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 18OCT2021 08:56:13  31.4S  179.3E ML=4.2  EMSC   KERMADEC ISLANDS REGION      

P: 18OCT2021 138076    32.0S  179.0E 4.0-5.5 AAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 19OCT2021 06:03:30  37.5N  137.2E ML=4.0  EMSC   NEAR WEST COAST OF HONSHU, JAP

P: 18OCT2021 137927    37.0N  141.0E 4.0-5.4 AACAA  Off East Coast Honshu       

 

O: 19OCT2021 00:03:25  49.4N  156.8E mb=4.2  EMSC   KURIL ISLANDS                

P: 18OCT2021 138019    51.0N  157.0E 4.0-5.8 ABAAA  Kamchatka                  

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 18OCT2021 17:45:37  34.0N  117.2W Ml=2.2  EMSC   GREATER LOS ANGELES AREA, CALI

P: 14OCT2021 137936    33.7N  117.5W 2.5-4.6 BAAAA  So. California             

 

O: 18OCT2021 21:16:00  30.6N  113.9W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 15OCT2021 137930    31.0N  114.3W 2.5-4.7 BAAAA  So. California             

 

O: 18OCT2021 08:46:40  31.1N  116.0W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO      

P: 17OCT2021 137929    31.9N  116.3W 2.5-4.7 AAAAA  So. California             

 

O: 19OCT2021 06:49:25  36.0N  119.8W Md=2.3  EMSC   CENTRAL CALIFORNIA           

O: 18OCT2021 09:42:15  36.2N  120.2W ML=2.6  EMSC   CENTRAL CALIFORNIA

O: 18OCT2021 09:45:06  36.2N  120.2W ML=3.4  EMSC   CENTRAL CALIFORNIA           

P: 17OCT2021 137898    36.1N  120.1W 2.5-4.8 AAAAA  Central California          

 

O: 18OCT2021 08:13:53  36.6N  121.2W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P: 13OCT2021 137899    36.8N  121.3W 2.5-4.7 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.8 in Central California was felt with intensity II-III in the area(s) of Central California at San Juan Bautista, Salinas, Castroville, Marina, Hollister, Pacific Grove, Los Banos and IV in Aromas.

 

O: 18OCT2021 07:36:12  37.1N  117.9W Ml=2.5  EMSC   CENTRAL CALIFORNIA           

P: 20OCT2021 137895    37.1N  117.8W 2.5-4.7 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.5 in Bishop, California was felt with intensity II-III in the area(s) of Bishop, California.

 

O: 18OCT2021 20:40:39  37.3N  120.0W Md=2.7  EMSC   CENTRAL CALIFORNIA           

P: 17OCT2021 137898    36.1N  120.1W 2.5-4.8 ABAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in Central California was felt with intensity II-III in the area(s) of Central California at Dos Palos, Los Banos.

 

O: 18OCT2021 10:13:44  38.5N  119.4W ml=2.4  EMSC   CENTRAL CALIFORNIA           

P: 16OCT2021 137897    38.8N  119.6W 2.5-4.4 AAAAA  California/Nevada area     

 

O: 18OCT2021 07:09:59  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 18OCT2021 137901    38.7N  122.7W 2.5-4.6 AAAAA  Central California         

 

O: 18OCT2021 21:59:42  40.8N  126.2W ML=3.2  EMSC   OFF COAST OF NORTHERN CALIFORN

P: 14OCT2021 137994    40.3N  127.2W 2.5-4.8 BAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O: 19OCT2021 02:08:44  55.8N  155.5W ml=3.4  EMSC   SOUTH OF ALASKA              

P: 18OCT2021 138011    55.7N  157.9W 3.5-4.9 AABAA  Alaska Peninsula           

 

O: 18OCT2021 18:57:37  59.8N  152.8W ML=3.1  EMSC   SOUTHERN ALASKA              

P: 15OCT2021 138031    60.0N  153.5W 3.2-5.4 BAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 18OCT2021 07:35:38  65.3N  133.4W ML=4.8  EMSC   NORTHERN YUKON TERRITORY, CANADA

O: 18OCT2021 15:17:49  65.3N  133.4W ML=3.9  EMSC   NORTHERN YUKON TERRITORY, CANADA

O: 18OCT2021 15:17:49  65.2N  133.3W MB=3.9  ECAN Keno, YT    

O: 18OCT2021 07:35:38  65.3N  132.9W MB=4.4  ECAN OF ELSA, YT   

O: 18OCT2021 07:35:38  65.3N  133.4W MB=4.8  ECAN Keno, YT    

O: 18OCT2021 09:10:05  65.2N  133.6W MB=3.5  ECAN Keno, YT    

O: 18OCT2021 09:10:05  65.2N  133.6W ML=3.5  EMSC   NORTHERN YUKON TERRITORY, CANA

P: 17OCT2021 138041    66.9N  135.8W 3.0-4.6 ABAAA  Northern Alaska            

 

ROCKY MOUNTAINS REGION

 

 

O: 18OCT2021 08:07:22  31.6N  104.2W ML=3.5  EMSC   WESTERN TEXAS                

O: 18OCT2021 08:08:29  31.6N  104.1W ML=3.1  EMSC   WESTERN TEXAS

 

O: 19OCT2021 06:30:05  44.2N  115.1W Ml=2.1  EMSC   SOUTHERN IDAHO

O: 19OCT2021 02:45:45  44.2N  115.1W Ml=2.2  EMSC   SOUTHERN IDAHO                

P: 17OCT2021 137982    44.4N  115.1W 2.0-4.0 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 19OCT2021 00:12:32  36.5N   98.8W ML=2.0  EMSC   OKLAHOMA                     

P: 15OCT2021 137956    37.0N   98.0W 2.0-4.1 BAAAA  Southern Plains            

 

HAWAII

 

O: 18OCT2021 18:12:51  19.2N  155.4W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII     

O: 18OCT2021 22:11:34  19.3N  155.4W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII     

P: 17OCT2021 137858    19.4N  155.1W 3.0-4.6 AAAAA  Hawaii                      

 

O: 18OCT2021 08:56:34  19.9N  156.7W ML=3.4  EMSC   HAWAII REGION, HAWAII        

P: 14OCT2021 137882    20.3N  156.6W 4.0-5.6 AAAAA  Hawaii area                

 

NEIC reported this earthquake of M 3.6 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Kailua Kona, Kamuela and Hilo.

 

STRONG QUAKE SHAKES VANUATU

 

EARTHQUAKE SUMMARY FOR OCTOBER 17, 2021

 

The strongest earthquake in the world today was an M 6.1 in northern Vanuatu. NEIC reported it was felt with maximum intensity V in Sola Torba, Vanuatu with IV in Port Olry, Sanma and III in Luganville. This is the strongest earthquake within about 100 km of this epicenter since an M 6.1 on March 18, 2020 but the last of stronger magnitude in the region was an M 6.6 on January 15, 2019. Forecast 138059 had expected this activity in this region was likely around October 14.

 

O: 18OCT2021 07:26:52  13.7S  167.0E Mw=6.1  EMSC   VANUATU                      

P: 14OCT2021 138059    15.0S  167.0E 4.0-5.4 BBAAA  Vanuatu Islands            

 

An M 4.4 earthquake in northern Albania today was widely felt. NEIC reported maximum shaking with intensity V in Albania at Lezhe, IV in Shkoder, and II-III in Shengjn, Ulcinj, Tirana. It was also felt lightly in Serbia and Montenegro, Croatia and Macedonia. The last earthquake of M>=4.4 within about 150 km of this epicenter in Albania was an M 4.5 on January 26, 2021 and an M 4.6 on March 22, 2021. Forecast 137998 had expected today's event was likely within about 100 km  of this epicenter around October 15.

 

O: 17OCT2021 20:13:30  41.8N   19.8E mb=4.4  EMSC   ALBANIA                      

P: 15OCT2021 137998    41.0N   20.0E 3.0-5.1 AAAAA  Romania/NW Turkey          

 

The strongest earthquake in the U.S. or Canada today was an M 4.7 aftershock  in the Alaska Peninsula. It may have been felt lightly in the epicentral area. An M 6.9 hit the Alaska Peninsula on October 11 and was followed by an M 4.9 later in the day but this is the largest event in the Alaska Peninsula since those events. Today's M 4.7 is located about 200 km southwest of the M 6.9 on October 11 but is probably a regional aftershock. Forecast 138011 had expected this event was likely within about 50 km around October 18.

 

O: 17OCT2021 19:32:22  55.1N  157.6W ML=3.2  EMSC   ALASKA PENINSULA

O: 17OCT2021 19:27:07  55.1N  157.7W mb=4.7  EMSC   ALASKA PENINSULA             

O: 18OCT2021 01:34:47  56.3N  156.6W ml=3.0  EMSC   ALASKA PENINSULA             

P: 18OCT2021 138011    55.7N  157.9W 3.5-4.9 AAAAA  Alaska Peninsula           

 

An unusual earthquake in the Yukon Territory of Canada also occurred today with M 4.4. This is the strongest earthquake within about 200 km of this epicenter in the Northern Yukon since an M 6.0 about 100 km to the west occurred on December 22, 2017. Forecast 138044 had expected this event was likely within in this area around October 15.

 

O: 18OCT2021 07:35:38  65.3N  132.9W MB=4.4  ECAN  ELSA, YT   

O: 18OCT2021 07:35:38  65.3N  132.9W ML=4.4  EMSC   NORTHERN YUKON TERRITORY, CANA

P: 15OCT2021 138044    66.0N  130.0W 2.5-4.1 BAAAA  Yukon Territory, Canada    

 

The strongest earthquake in the U.S. or Canada outside Alaska today was an M 4.0 in the Olancha area of Central California. NEIC reported it was felt with maximum intensity IV in Lone Pine and II-III in Ridgecrest,  Independence, Lake Isabella, Exeter, Bakersfield, Dinuba, Clovis, Los Angeles and Los Banos, California. This is the strongest earthquake in this aftershock area of Ridgecrest, California since an M 4.0 on February 12 and January 17, 2021 but the last event of significantly larger magnitude in this area was an M 5.8  - the mainshock and an M 4.6 aftershock on June 24, 2020. Forecast 137894 had expected today's event within about 25 km was likely around October 15.

 

O: 17OCT2021 13:18:59  36.2N  117.9W Mw=4.0  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2021 137894    36.1N  118.1W 2.5-4.7 AAAAA  California/Nevada area     

 

An earthquake of M 3.8-4.0 in Hawaii also was widely felt today. It was reported with intensity VI in Pahala and II-III in Naalehu, Hawaii National Park, Captain Cook, Volcano, Holualoa, Hilo, Mountain View, Pahoa and Kealakekua. This is the strongest earthquake in the region of the Kilauea eruption since an M 4.6 on October 6, 2021. An event of M 6.2 south of Hawaii was followed by an M 4.3 aftershock on October 10, 2021. Forecast 137858 had expected today's event was likely within about 25 km around October 12.

 

O: 17OCT2021 15:52:11  19.2N  155.5W ML=4.0  EMSC   ISLAND OF HAWAII, HAWAII

P: 12OCT2021 137858    18.9N  155.4W 3.0-4.6 BAAAA  Hawaii                     

 

A second moderate earthquake occurred with M 4.2 in eastern Poland today. This was reported felt with intensity IV in Poland at Glogow and II in Wroclaw and possibly in Belarus.  A similar earthquake, both of which may be related regional mining, occurred on October 16, 2021 and was reported in this summary as:

 

 

"An unusually large M 4.3 occurred in Poland today.  NEIC reported this earthquake of M 4.3 in Lubin, Poland was felt with intensity V in the area(s) of Lubin, Poland. The last earthquake in Poland within about 200 km of this epicenter with M>=4.3 was recorded by NEIC as occurring a year ago near today's epicenter on November 19, 2020; the last of larger magnitude was an M 4.9 on July 8, 2020. Forecast 137738 had expected today's event in early October." (October 16, 2021)

 

Forecast 138021 had expected the area of northern Germany and western Poland could see enhanced seismicity around October 16.

 

O: 17OCT2021 12:20:54  51.6N   16.2E mb=4.2  EMSC   POLAND                       

P: 16OCT2021 138021    50.0N   12.0E 3.0-4.4 ABCAA  No. Germany                

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: 18OCT2021 05:49:17  24.2N  121.8E mb=4.8  EMSC   TAIWAN                       

O: 18OCT2021 05:49:16  24.2N  121.7E ML=5.2  TAI    Hualien, Taiwan              

P: 13OCT2021 137891    24.0N  121.0E 4.0-5.4 BAAAA  Taiwan                      

P: 18OCT2021 137890    23.0N  122.0E 4.0-5.5 ABAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity IV in Hualien, Yilan, Nantou; III in Taichung, Taoyuan; II in Taipei, Hsinchu, Miaoli, Yunlin, and I in Hsinchu, Taitung, Changhua, Chiayi Counties, Taiwan.

NEIC reported this earthquake of M 4.8 in Taiwan was felt with intensity II-III in the area(s) of Taiwan in Taoyuan, Taichung and Changhua.

 

O: 18OCT2021 00:37:00  29.3N  104.1E mb=4.5  EMSC   EASTERN SICHUAN, CHINA        

 

O: 17OCT2021 20:11:58  36.1N   70.8E mb=4.5  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 14OCT2021 137909    37.0N   71.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

O: 18OCT2021 07:21:20  37.5N   72.2E mb=4.4  EMSC   TAJIKISTAN                   

P: 14OCT2021 137909    37.0N   71.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

O: 17OCT2021 17:50:49  55.9N  113.5E mb=4.6  EMSC   BURYATIYA, RUSSIA            

P:  9OCT2021 137741    56.0N  110.0E 3.0-4.5 CABAA  So. Siberia                

 

O: 18OCT2021 04:37:33  51.0N   93.8E mb=4.3  EMSC   SOUTHWESTERN SIBERIA, RUSSIA 

P: 10OCT2021 137741    51.0N   98.0E 3.0-4.6 CACAA  So. Siberia                

 

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

 

INDONESIA AND PHILIPPINES

 

O: 17OCT2021 23:02:48   1.5N  122.7E ML=4.0  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 20OCT2021 137824     4.0N  123.0E 4.0-5.5 BCAAA  Mindanao, Philippines      

 

O: 17OCT2021 15:02:11   2.1S  125.8E mb=4.6  EMSC   KEPULAUAN SULA, INDONESIA    

P: 13OCT2021 137844     2.0S  124.0E 4.0-5.5 BABAA  Sulawesi area              

 

O: 18OCT2021 07:03:50   2.7N  128.1E mb=4.7  EMSC   HALMAHERA, INDONESIA         

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 ABAAA  Mindanao, Philippines      

 

O: 17OCT2021 22:04:33   2.8S  129.4E ML=4.8  EMSC   SERAM, INDONESIA             

P: 15OCT2021 137830     3.0S  129.0E 4.0-5.5 AAAAA  Ceram area                 

 

O: 17OCT2021 17:16:05   4.2N  125.9E ML=4.2  EMSC   KEPULAUAN SANGIHE, INDONESIA 

P: 20OCT2021 137824     4.0N  125.0E 4.0-5.4 BAAAA  Mindanao, Philippines      

 

O: 17OCT2021 17:40:36   6.6S  129.4E ML=4.1  EMSC   BANDA SEA

O: 17OCT2021 20:12:48   6.5S  129.4E ML=4.1  EMSC   BANDA SEA                    

P: 15OCT2021 137849     7.0S  130.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O: 18OCT2021 00:49:01  10.3S  117.7E ML=4.4  EMSC   SOUTH OF SUMBAWA, INDONESIA  

P: 16OCT2021 137845     8.0S  117.0E 4.0-5.4 ACAAA  Sumbawa Island area        

 

O: 17OCT2021 10:51:55  13.6N  123.2E ML=4.2  EMSC   LUZON, PHILIPPINES           

P: 14OCT2021 137861    14.0N  122.0E 3.5-5.1 BAAAA  Luzon, Philippines         

 

 

CENTRAL AND SOUTH AMERICA

 

O: 18OCT2021 02:51     20.2S   70.5W mb=4.1  GUC    Tarapaca at Iquique and Pozo A

P: 14OCT2021 138066    20.0S   70.0W 4.0-5.9 BAAAA  So. Peru/Bolivia           

 

CWB reported thise earthquake was felt with intensity  III in  Tarapaca at Iquique and Pozo Almonte and II in Alto Hospicio, Chile.

 

O: 17OCT2021 22:16:30   7.5N   82.3W ML=4.3  EMSC   SOUTH OF PANAMA              

P: 13OCT2021 137821     8.0N   82.0W 3.5-5.1 BAAAA  Costa Rica                 

 

O: 17OCT2021 23:26:32  16.7N   93.9W mb=4.4  EMSC   CHIAPAS, MEXICO              

P: 13OCT2021 137854    17.0N   94.0W 3.5-5.2 BAAAA  Chiapas, Mexico            

 

NEIC reported this earthquake of M 4.4 in Chiapas, Mexico was felt with intensity II-III in the area(s) of Chiapas, Mexico at Tuxtla Gutierrez.

 

O: 18OCT2021 07:26:36  17.2S   70.5W mb=4.0  EMSC   SOUTHERN PERU                

P: 16OCT2021 138056    18.0S   71.0W 4.0-5.7 AAAAA  So. Peru/Bolivia           

 

O: 17OCT2021 12:47:09  18.0N   68.5W Md=3.7  EMSC   DOMINICAN REPUBLIC REGION    

P: 12OCT2021 137872    18.0N   68.0W 3.4-5.1 BAAAA  Puerto Rico                

 

O: 17OCT2021 09:25:07  18.8N   73.8W ML=3.7  EMSC   HAITI REGION                 

O: 17OCT2021 11:30:09  18.9N   74.0W ML=3.3  EMSC   HAITI REGION

O: 17OCT2021 20:38:05  18.9N   74.0W ML=3.3  EMSC   HAITI REGION

O: 18OCT2021 00:01:52  18.9N   74.0W ML=3.1  EMSC   HAITI REGION

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 BAAAA  Haiti                      

 

O: 18OCT2021 02:48:42  19.1N   66.5W Md=3.5  EMSC   PUERTO RICO REGION           

P: 18OCT2021 137873    19.0N   66.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 18OCT2021 02:51:31  20.2S   70.5W ML=4.1  EMSC   OFFSHORE TARAPACA, CHILE     

P: 14OCT2021 138066    20.0S   70.0W 4.0-5.9 BAAAA  So. Peru/Bolivia           

 

O: 17OCT2021 15:42:32  21.7N  101.0W ML=4.0  EMSC   GUANAJUATO, MEXICO           

P: 17OCT2021 137864    18.0N  101.0W 3.5-5.2 ACAAA  Michoacan, Mexico          

 

O: 17OCT2021 16:56:42  24.1S   67.2W mb=4.0  EMSC   SALTA, ARGENTINA

O: 17OCT2021 07:29:43  24.0S   67.0W mb=4.4  EMSC   SALTA, ARGENTINA             

P: 17OCT2021 138060    24.0S   68.0W 4.0-5.4 AAAAA  Argentina                  

 

O: 17OCT2021 13:04:03  26.0S   71.2W mb=4.4  EMSC   OFF COAST OF ATACAMA, CHILE  

P: 14OCT2021 138061    29.0S   70.0W 4.0-5.6 BCAAA  Coast Central Chile        

 

O: 17OCT2021 16:14:22  50.6S   73.2W mb=4.4  EMSC   SANTA CRUZ, ARGENTINA        

 

AFRICA AND EUROPE

 

O: 17OCT2021 19:38:13  28.7N   17.8W ML=3.5  EMSC   CANARY ISLANDS, SPAIN REGION 

O: 17OCT2021 23:57:34  28.7N   17.8W ML=4.4  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 BAAAA  Canary Islands             

 

O: 17OCT2021 20:13:30  41.8N   19.8E mb=4.4  EMSC   ALBANIA                      

P: 15OCT2021 137998    41.0N   20.0E 3.0-5.1 AAAAA  Romania/NW Turkey          

 

O: 17OCT2021 12:20:54  51.6N   16.2E mb=4.2  EMSC   POLAND                        

P: 16OCT2021 138021    50.0N   12.0E 3.0-4.4 ABCAA  No. Germany                

 

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

 

SOUTHWEST PACIFIC

 

O: 18OCT2021 07:26:52  13.7S  167.0E Mw=6.1  EMSC   VANUATU                       

P: 14OCT2021 138059    15.0S  167.0E 4.0-5.4 BBAAA  Vanuatu Islands            

 

O: 17OCT2021 15:57:33  14.9S  168.0E mb=4.9  EMSC   VANUATU                      

P: 14OCT2021 138059    15.0S  167.0E 4.0-5.4 BAAAA  Vanuatu Islands             

 

O: 18OCT2021 06:24:15  25.6S  180.0E mb=4.8  EMSC   SOUTH OF FIJI ISLANDS        

P: 19OCT2021 138069    23.0S  179.0E 4.0-5.4 ACAAA  Tonga/Fiji                 

 

O: 17OCT2021 07:38:47  11.9S  167.0E mb=4.4  EMSC   SANTA CRUZ ISLANDS            

P: 15OCT2021 138059    11.0S  165.0E 4.0-5.4 AABAA  Vanuatu Islands            

 

 

OCEAN RIDGES

 

O: 17OCT2021 20:37:01  79.6N    4.4E mb=4.7  EMSC   GREENLAND SEA                

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 17OCT2021 09:05:36  33.4S  178.8E ML=4.1  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 18OCT2021 138076    32.0S  179.0E 4.0-5.5 ABAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 17OCT2021 21:59:51  28.7N  138.2E Mw=5.1  EMSC   BONIN ISLANDS, JAPAN REGION  

P: 19OCT2021 137879    28.0N  140.0E 4.0-5.4 AABAA  Bonin Islands              

 

O: 18OCT2021 02:01:22  38.3N  141.5E mb=4.6  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 17OCT2021 137928    38.0N  140.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

O: 17OCT2021 15:49:31  41.0N  142.2E mb=4.8  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 17OCT2021 137975    40.0N  142.0E 3.5-5.6 AAAAA  Hokkaido, Japan            

 

NEIC reported this earthquake of M 4.8 in Hokkaido, Japan was felt with intensity II-III in the area(s) of Hokkaido, Japan at Misawa.

 

O: 17OCT2021 17:39:15  49.2N  156.0E mb=5.2  EMSC   KURIL ISLANDS

O: 17OCT2021 15:17:04  49.3N  156.0E mb=4.5  EMSC   KURIL ISLANDS

O: 17OCT2021 16:47:59  49.4N  155.9E mb=4.5  EMSC   KURIL ISLANDS

O: 17OCT2021 12:05:17  49.2N  156.0E mb=5.0  EMSC   KURIL ISLANDS                

P: 14OCT2021 138003    49.0N  153.0E 3.5-5.4 BAAAA  So. Kurils                 

P: 18OCT2021 138019    51.0N  157.0E 4.0-5.8 ABAAA  Kamchatka                  

 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 17OCT2021 18:04:27  30.8N  114.5W ML=3.6  EMSC   GULF OF CALIFORNIA

O: 17OCT2021 09:37:43  30.1N  114.1W ML=3.5  EMSC   GULF OF CALIFORNIA           

P: 15OCT2021 137930    31.0N  114.3W 2.5-4.7 AAAAA  So. California             

 

O: 18OCT2021 03:58:44  33.3N  116.1W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 15OCT2021 137932    32.8N  116.0W 2.5-4.7 BAAAA  So. California             

 

O: 17OCT2021 20:17:14  34.0N  117.2W Ml=2.5  EMSC   GREATER LOS ANGELES AREA, CALI

P: 14OCT2021 137936    33.7N  117.5W 2.5-4.6 BAAAA  So. California             

 

NEIC reported this earthquake of M 2.5 in Southern California was felt with intensity II-III in the area(s) of Southern California at Orange.

 

O: 17OCT2021 19:34:03  37.6N  118.9W Md=2.1  EMSC   LONG VALLEY AREA, CALIFORNIA 

P: 15OCT2021 137896    37.3N  118.3W 2.5-4.9 AAAAA  California/Nevada area     

 

 

O: 17OCT2021 13:46:03  36.2N  117.9W Ml=2.3  EMSC   CENTRAL CALIFORNIA

O: 17OCT2021 16:07:40  36.2N  117.9W Ml=2.4  EMSC   CENTRAL CALIFORNIA

O: 17OCT2021 17:15:32  36.2N  117.9W Ml=2.1  EMSC   CENTRAL CALIFORNIA

O: 17OCT2021 21:41:06  36.2N  117.9W Ml=2.7  EMSC   CENTRAL CALIFORNIA

O: 18OCT2021 00:41:49  36.2N  117.9W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 17OCT2021 13:18:59  36.2N  117.9W Mw=4.0  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2021 137894    36.1N  118.1W 2.5-4.7 AAAAA  California/Nevada area     

 

O: 17OCT2021 14:53:10  38.8N  122.8W Md=2.4  EMSC   NORTHERN CALIFORNIA

O: 18OCT2021 07:09:59  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 17OCT2021 08:27:14  38.8N  122.8W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 16OCT2021 137901    38.9N  122.8W 2.5-4.6 AAAAA  Central California         

 

ALASKA

 

O: 17OCT2021 19:32:22  55.1N  157.6W ML=3.2  EMSC   ALASKA PENINSULA

O: 17OCT2021 19:27:07  55.1N  157.7W mb=4.7  EMSC   ALASKA PENINSULA             

O: 18OCT2021 01:34:47  56.3N  156.6W ml=3.0  EMSC   ALASKA PENINSULA             

P: 18OCT2021 138011    55.7N  157.9W 3.5-4.9 AAAAA  Alaska Peninsula           

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 18OCT2021 02:42:00  45.4N  121.7W Ml=2.5  EMSC   MOUNT HOOD AREA, OREGON      

P: 19OCT2021 137997    45.3N  121.7W 2.0-4.0 AAAAA  Oregon state, U.S.         

 

O: 18OCT2021 07:35:38  65.3N  132.9W MB=4.4  ECAN  ELSA, YT   

O: 18OCT2021 07:35:38  65.3N  132.9W ML=4.4  EMSC   NORTHERN YUKON TERRITORY, CANA

P: 15OCT2021 138044    66.0N  130.0W 2.5-4.1 BAAAA  Yukon Territory, Canada    

 

ROCKY MOUNTAINS REGION

 

O: 18OCT2021 06:31:37  44.3N  115.2W Ml=2.3  EMSC   SOUTHERN IDAHO                

P: 17OCT2021 137982    44.4N  115.1W 2.0-4.0 AAAAA  Montana/Idaho              

 

O: 17OCT2021 19:33:57  45.6N  115.6W Ml=2.4  EMSC   NORTHERN IDAHO               

P: 17OCT2021 137982    44.4N  115.1W 2.0-4.0 ABAAA  Montana/Idaho              

 

O: 18OCT2021 00:27:33  31.6N  104.6W ML=2.9  EMSC   WESTERN TEXAS

O: 17OCT2021 16:58:41  31.7N  104.0W ML=3.0  EMSC   WESTERN TEXAS

O: 17OCT2021 19:00:10  31.7N  104.0W ML=3.5  EMSC   WESTERN TEXAS

O: 18OCT2021 04:14:41  31.7N  104.0W ML=2.6  EMSC   WESTERN TEXAS

 

EASTERN U.S./CANADA

 

O: 17OCT2021 07:01:56  33.9N   82.4W Md=2.0  EMSC   GEORGIA, USA                 

P: 17OCT2021 137953    34.0N   85.0W 2.0-3.9 AABAA  Southeast U.S.             

 

O: 18OCT2021 05:33:00  35.1N   95.4W ML=2.1  EMSC   OKLAHOMA                      

P: 17OCT2021 137955    36.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

HAWAII

 

O: 17OCT2021 22:58:40  19.2N  155.4W ML=3.5  EMSC   ISLAND OF HAWAII, HAWAII

O: 17OCT2021 15:52:11  19.2N  155.5W ML=3.8  ANSS   ISLAND OF HAWAII, HAWAII

O: 17OCT2021 15:52:11  19.2N  155.5W ML=4.0  EMSC   ISLAND OF HAWAII, HAWAII

O: 18OCT2021 05:34:56  19.2N  155.5W ML=3.4  EMSC   ISLAND OF HAWAII, HAWAII

O: 17OCT2021 09:44:32  18.9N  155.5W ML=3.1  EMSC   HAWAII REGION, HAWAII        

P: 12OCT2021 137858    18.9N  155.4W 3.0-4.6 BAAAA  Hawaii                     

 

NEIC reported the earthquake of M 3.3 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Naalehu, Captain Cook and Kailua Kona.

 

MODERATE QUAKE SHAKES CAYMAN ISLANDS AND CUBA

 

EARTHQUAKE SUMMARY FOR OCTOBER 16, 2021

 

A series of moderate earthquakes struck the area near the Caribbean today. These events occurred as an M 5.3 in the Cayman Islands; an M 5.1 in the North Atlantic and an M 4.9 in the Trinidad and Tobago area.

 

The earthquake of M 5.3 was felt with intensity II-III in the area of the Cayman Islands south of Cuba at George Town, Bodden Town, and West Bay and possibly in southern Cuba. This was the strongest earthquake in the world today following a similar quiet global lull in seismicity yesterday. This appears to be the strongest aftershock of the M 7.7 and 6.1 in the Cayman Islands of January 28, 2020 and the M 7.6 to the southwest of this on January 10, 2018. Forecast 137586 had expected today's event within about 50 km was likely around October 8. This epicenter is near 105 degrees from the M 7.2 in Vanuatu of October 2, 2021 and may have been promoted by energy from that source.

 

O: 16OCT2021 18:27:29  18.7N   81.7W Mw=5.3  EMSC   CAYMAN ISLANDS REGION        

P:  8OCT2021 137586    19.0N   81.0W 3.5-5.4 CAAAA  Caribbean Sea              

 

An earthquake of M 5.1 also hit east of the event in the Cayman Islands in the North Atlantic Ocean today. It was not reported felt in this remote area. The lsat earthquake within about 200 km of this epicenter with M>=4.9 as an M 6.3 on November 11, 2018 followed by aftershocks of M 5.5-5.6 on November 17 and 27, 2018. An event of M 5.5 occurred about 250 km southeast of today's epicenter on May 17, 2021. Forecast 137865 had expected today's event in the Mid-Atlantic around October 16.

 

O: 16OCT2021 22:56:15  15.5N   50.0W mb=5.1  EMSC   NORTH ATLANTIC OCEAN         

P: 16OCT2021 137865    17.0N   47.0W 4.0-5.5 ABCAA  Mid-Atlantic Ridge         

 

An M 4.9 also hit the southern Caribbean in the Tobago region of Trinidad and Tobago. NEIC reported an earthquake of M 4.9 in Trinidad and Tobago was felt with intensity II-III in the area(s) of Trinidad and Tobago at Scarborough.  This is the strongest event within about 250 km of this epicenter since a similar M 4.9 on May 4, 2020, an aftershocks of an M 5.2 on April 7, 2020. Forecast 137877 had expected today's event in this region was likely around October 20.

 

O: 16OCT2021 07:07:45  11.6N   60.1W mb=4.9  EMSC   TOBAGO REGION, TRINIDAD-TOBAGO

P: 20OCT2021 137877    11.0N   63.0W 3.4-5.3 BACAA  Windward Islands           

 

The strongest earthquake in the U.S. or Canada today was an M 4.6-4.9 in Southern Alaska. NEIC reported it was felt with intensity IV in Alaska at Ninilchik and III in Clam Gulch, Kasilof, Anchor Point, Soldotna, Sterling, Home, Kenai, Cooper Landing and the West Kenai Peninsula. The last earthquakes within about 150 km of this epicenter in the Kenai Peninsula of Alaska with M>=4.9 occurred on November 5, 2017 with M 5.0 and M 5.1. Forecasts 138031 and 130833 had expected today's event within about 25 km  in mid-October.

 

O: 16OCT2021 17:47:22  60.1N  151.5W mb=4.9  EMSC   KENAI PENINSULA, ALASKA      

P: 13OCT2021 138033    60.2N  151.7W 3.2-5.2 BAAAA  Central Alaska             

P: 15OCT2021 138031    60.0N  153.5W 3.2-5.4 AAAAA  Central Alaska             

 

An earthquake of M 4.9 occurred in the south Atlantic-Indian Ridge southwest of Africa today. It was not reported felt in this remote area. A similar M 5.3 hit the area on August 29, 2021 within tens of km of today's epicenter. A series of events of M 4.9-5.2 hit about 200 km east of this in May, 2021. Forecast 137811 had expected today's activity in early to mid-October.  This epicenter is near 103 degrees from the M 7.2 in Haiti of August 14, 2021 and the M 7.2 in Vanuatu of October 2, 2021 and may have been promoted by energy from that source.

 

O: 16OCT2021 17:33:17  52.4S   13.5E mb=4.9  EMSC   SOUTHWEST OF AFRICA          

P:  6OCT2021 137811    53.0S   19.0E 4.0-5.4 CACAA  Atlantic-Indian 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: 16OCT2021 15:35:02  21.1N  121.2E mb=4.8  EMSC   TAIWAN REGION                

P: 15OCT2021 137890    22.0N  122.0E 4.0-5.4 AAAAA  Taiwan                     

 

O: 16OCT2021 22:24:30  28.2N   84.9E ML=4.3  EMSC   NEPAL                        

P: 18OCT2021 137966    30.0N   83.0E 3.8-5.4 ABBAA  Xizang                     

 

O: 16OCT2021 11:46:02  30.9N   56.5E mb=4.8  EMSC   CENTRAL IRAN                 

O: 16OCT2021 12:59:19  31.0N   56.5E ML=4.0  EMSC   CENTRAL IRAN

P: 14OCT2021 137950    31.0N   57.0E 3.8-5.5 AAAAA  So. Iran                   

 

O: 16OCT2021 21:42:14  41.4N   83.8E mb=4.4  EMSC   SOUTHERN XINJIANG, CHINA     

P: 15OCT2021 137978    41.0N   82.0E 4.0-5.6 AABAA  Kirgizstan/Xinjiang        

 

O: 16OCT2021 12:50:57  55.9N  113.5E mb=4.0  EMSC   BURYATIYA, RUSSIA            

P:  9OCT2021 137741    56.0N  110.0E 3.0-4.5 CABAA  So. Siberia                

 

INDONESIA AND PHILIPPINES

 

O: 16OCT2021 11:13:10   0.5S  131.4E ML=4.0  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 19OCT2021 137848     3.0S  130.0E 4.0-5.5 BCBAA  West Irian, PNG            

 

O: 16OCT2021 10:08:28   0.8N  126.2E mb=4.6  EMSC   MOLUCCA SEA                  

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 ACAA  Mindanao, Philippines      

 

O: 17OCT2021 05:49:02   2.4N  128.5E mb=4.3  EMSC   HALMAHERA, INDONESIA         

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 AACAA  Mindanao, Philippines      

 

O: 17OCT2021 05:18:51   4.6S  153.0E mb=4.8  EMSC   NEW IRELAND REGION, P.N.G.   

P: 15OCT2021 137836     6.0S  150.0E 4.0-5.6 ABCAA  New Ireland                

 

O: 16OCT2021 07:43:00   5.8S  130.6E mb=4.4  EMSC   BANDA SEA                    

P: 17OCT2021 137849     6.0S  131.0E 4.0-5.4 AAAAA  West Irian, PNG             

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 17OCT2021 05:52:49   7.0N   82.6W mb=4.2  EMSC   SOUTH OF PANAMA

O: 17OCT2021 04:58:06   6.3N   82.6W mb=4.5  EMSC   SOUTH OF PANAMA              

P: 13OCT2021 137821     8.0N   82.0W 3.5-5.1 BBAAA  Costa Rica                 

 

O: 16OCT2021 13:23:30   9.4N   84.8W ML=4.0  EMSC   COSTA RICA                   

P: 16OCT2021 137852    10.0N   84.0W 3.5-5.5 AAAAA  Caribbean Sea               

 

O: 16OCT2021 07:07:45  11.6N   60.1W mb=4.9  EMSC   TOBAGO REGION, TRINIDAD-TOBAGO

P: 20OCT2021 137877    11.0N   63.0W 3.4-5.3 BACAA  Windward Islands           

 

O: 16OCT2021 12:53:40  11.7S   77.7W mb=4.4  EMSC   NEAR COAST OF CENTRAL PERU   

P: 13OCT2021 138049    13.0S   77.0W 4.0-5.8 BBAAA  Central Peru               

 

NEIC reported this earthquake of M 4.4 in Central Peru was felt with intensity II-III in the area(s) of Central Peru at Lima and San Luis.

 

O: 16OCT2021 18:27:40  13.4N   90.4W ML=4.1  EMSC   OFFSHORE GUATEMALA           

P: 14OCT2021 137855    13.0N   89.0W 3.5-5.3 AAAAA  Coast of Central America   

 

O: 16OCT2021 14:16:58  13.7N   92.2W ML=4.2  EMSC   OFFSHORE GUATEMALA           

P: 17OCT2021 137854    14.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 16OCT2021 15:39:57  16.0N   94.7W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13OCT2021 137854    17.0N   94.0W 3.5-5.2 BAAAA  Chiapas, Mexico            

 

O: 16OCT2021 16:31:23  16.5N  100.7W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 14OCT2021 137864    17.0N  101.0W 3.5-5.3 AAAAA  Michoacan, Mexico          

 

O: 16OCT2021 21:52:39  16.6N   98.5W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 19OCT2021 137870    16.0N   98.0W 3.5-5.4 BAAAA  Oaxaca, Mexico             

 

O: 17OCT2021 00:53:11  16.7N   99.6W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 14OCT2021 137871    17.0N  100.0W 3.5-5.5 BAAAA  Oaxaca, Mexico             

 

O: 16OCT2021 07:04:49  18.0N   66.8W Md=3.0  EMSC   PUERTO RICO                  

P: 16OCT2021 137873    19.0N   67.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 17OCT2021 05:01:25  18.0N   71.7W ML=3.3  EMSC   DOMINICAN REPUBLIC           

P: 16OCT2021 137874    19.0N   71.0W 3.4-4.9 AAAAA  Dominican Republic         

 

O: 17OCT2021 05:34:31  18.3N   73.5W ML=3.5  EMSC   HAITI REGION                 

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 BAAAA  Haiti                      

 

O: 17OCT2021 02:35:41  18.4N  102.2W ML=4.1  EMSC   MICHOACAN, MEXICO             

P: 17OCT2021 137864    18.0N  101.0W 3.5-5.2 AAAAA  Michoacan, Mexico          

 

O: 16OCT2021 18:27:29  18.7N   81.7W Mw=5.3  EMSC   CAYMAN ISLANDS REGION        

P:  8OCT2021 137586    19.0N   81.0W 3.5-5.4 CAAAA  Caribbean Sea              

 

O: 17OCT2021 06:40:38  19.0N   65.0W Md=3.7  EMSC   VIRGIN ISLANDS REGION

O: 17OCT2021 05:57:17  19.0N   65.0W Md=3.5  EMSC   VIRGIN ISLANDS REGION        

P: 17OCT2021 137859    19.0N   65.0W 3.0-5.2 AAAAA  Leeward Islands            

 

O: 16OCT2021 18:45:01  31.7S   72.0W mb=4.7  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 14OCT2021 138070    33.0S   72.0W 4.0-5.7 BAAAA  Central Chile              

 

O: 16OCT2021 18:34:37  36.9S   74.1W mb=4.4  EMSC   OFFSHORE BIO-BIO, CHILE      

P: 16OCT2021 138071    36.0S   73.0W 4.0-5.6 AAAAA  Central Chile              

 

O: 16OCT2021 07:04:24  42.3S   72.3W mb=4.6  EMSC   LOS LAGOS, CHILE             

P: 13OCT2021 138071    39.0S   73.0W 4.0-5.6 BCAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O: 16OCT2021 20:26:25  11.8N   42.3E ML=4.3  EMSC   DJIBOUTI                     

O: 17OCT2021 06:25:37  10.1N   41.5E ML=4.3  EMSC   ETHIOPIA                     

 

O: 16OCT2021 23:25:41  26.3S   27.5E ML=3.0  EMSC   SOUTH AFRICA                 

P: 17OCT2021 138064    26.0S   28.0E 3.0-4.9 AAAAA  Rep. South Africa          

 

O: 16OCT2021 10:54:43  28.6N   17.8W ML=3.5  EMSC   CANARY ISLANDS, SPAIN REGION

O: 16OCT2021 08:57:51  28.6N   17.8W ML=3.4  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary Islands             

 

SOUTHWEST PACIFIC

 

O: 16OCT2021 08:20:59  21.2S  178.6W mb=4.1  EMSC   FIJI REGION                  

P: 19OCT2021 138068    22.0S  179.0W 4.0-5.6 BAAAA  Tonga Islands              

 

O: 16OCT2021 09:51:15  22.8S  171.0E mb=4.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 15OCT2021 138062    21.0S  170.0E 4.0-5.5 BAAAA  Loyalty Islands            

 

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

 

OCEAN RIDGES

 

O: 16OCT2021 22:56:15  15.5N   50.0W mb=5.1  EMSC   NORTH ATLANTIC OCEAN         

P: 16OCT2021 137865    17.0N   47.0W 4.0-5.5 ABCAA  Mid-Atlantic Ridge         

 

O: 16OCT2021 17:33:17  52.4S   13.5E mb=4.9  EMSC   SOUTHWEST OF AFRICA          

P:  6OCT2021 137811    53.0S   19.0E 4.0-5.4 CACAA  Atlantic-Indian Ridge      

 

O: 16OCT2021 13:24:11  58.9S   25.0W mb=5.1  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 12OCT2021 138085    58.0S   26.0W 4.0-5.6 BAAAA  So. Sandwich Islands       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 17OCT2021 02:30:56  30.0S  177.4W mb=5.1  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P: 15OCT2021 138072    30.0S  177.0W 4.0-5.6 AAAAA  No. Kermadec Islands       

 

O: 16OCT2021 16:05:26  31.3S  177.4W mb=4.9  EMSC   KERMADEC ISLANDS REGION       

P: 10OCT2021 137803    31.0S  177.0W 4.0-5.4 CAAAA  So. Kermadec Islands       

P: 15OCT2021 138072    30.0S  177.0W 4.0-5.6 ABAAA  No. Kermadec Islands       

 

O: 16OCT2021 14:58:12  32.7S  179.4E ML=4.3  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 18OCT2021 138076    32.0S  179.0E 4.0-5.5 AAAAA  So. Kermadec Islands       

 

O: 16OCT2021 09:11:51  34.2S  179.6E ML=4.3  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 18OCT2021 138076    32.0S  179.0E 4.0-5.5 ACAAA  So. Kermadec Islands       

 

O: 16OCT2021 22:15:12  48.4S  165.1E mb=4.7  EMSC   OFF W. COAST OF S. ISLAND, N.Z

O: 16OCT2021 22:15:12  48.3S  164.8E ML=5.1  GEONET Not felt

P: 14OCT2021 138081    45.0S  167.0E 3.0-5.1 ACBAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

O: 17OCT2021 01:12:40  28.7N  138.2E mb=4.8  EMSC   BONIN ISLANDS, JAPAN REGION  

P: 17OCT2021 137904    30.0N  139.0E 3.5-5.1 ABAAA  Central/So. Honshu Japan   

 

O: 17OCT2021 02:32:06  29.4N  130.7E Mw=5.1  EMSC   RYUKYU ISLANDS, JAPAN        

P: 17OCT2021 137884    29.0N  130.0E 4.0-5.4 AAAAA  Kyushu Japan               

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 16OCT2021 08:15:07  30.8N  114.3W ML=3.8  EMSC   GULF OF CALIFORNIA

O: 16OCT2021 21:31:00  30.7N  114.1W ML=3.8  EMSC   GULF OF CALIFORNIA            

P: 15OCT2021 137930    31.0N  114.3W 2.5-4.7 AAAAA  So. California             

 

O: 16OCT2021 16:31:29  33.3N  116.0W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 14OCT2021 137934    33.7N  116.1W 2.5-4.8 AAAAA  So. California             

 

O: 17OCT2021 02:27:34  36.0N  119.8W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 17OCT2021 137898    36.1N  120.1W 2.5-4.8 AAAAA  Central California         

 

O: 16OCT2021 07:53:58  36.7N  121.4W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 13OCT2021 137899    36.8N  121.3W 2.5-4.7 BAAAA  Central California         

 

O: 17OCT2021 02:17:06  37.3N  116.6W ml=2.3  EMSC   NEVADA                       

O: 17OCT2021 03:38:02  37.4N  117.1W ml=2.2  EMSC   NEVADA                       

P: 14OCT2021 137895    37.4N  117.2W 2.5-4.5 BAAAA  California/Nevada area     

 

O: 16OCT2021 22:55:40  37.5N  118.8W ML=2.5  EMSC   CENTRAL CALIFORNIA           

P: 13OCT2021 137896    37.5N  118.6W 2.5-4.8 BAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.0 in Mammoth Lakes, Central California was felt with intensity II-III in the area(s) of Mammoth Lakes, Central California and Bishop.

 

O: 17OCT2021 02:55:02  37.6N  121.7W Md=2.8  EMSC   NORTHERN CALIFORNIA          

P: 15OCT2021 137900    37.4N  121.8W 2.5-4.7 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.8 in Livermore, northern California was felt with intensity II-III in the area(s) of Livermore, northern California at Fremont, Pleasanton, Dublin, Tracy, San Ramon.

 

O: 16OCT2021 23:38:44  38.2N  117.9W ml=2.1  EMSC   NEVADA                       

P: 15OCT2021 137896    37.3N  118.3W 2.5-4.9 AAAAA  California/Nevada area     

 

O: 16OCT2021 21:10:18  38.6N  119.5W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P: 16OCT2021 137897    38.8N  119.6W 2.5-4.4 AAAAA  California/Nevada area     

 

 

ALASKA

 

 

O: 16OCT2021 07:36:58  54.2N  156.1W ML=3.4  EMSC   SOUTH OF ALASKA              

P: 15OCT2021 138011    54.7N  155.9W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O: 16OCT2021 14:30:13  56.3N  156.5W ML=3.2  EMSC   ALASKA PENINSULA             

P: 18OCT2021 138011    55.7N  157.9W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O: 16OCT2021 14:56:11  58.7N  153.1W ML=3.1  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 15OCT2021 138031    60.0N  153.5W 3.2-5.4 ABAAA  Central Alaska             

 

O: 16OCT2021 17:47:22  60.1N  151.5W mb=4.9  EMSC   KENAI PENINSULA, ALASKA      

P: 13OCT2021 138033    60.2N  151.7W 3.2-5.2 BAAAA  Central Alaska             

P: 15OCT2021 138031    60.0N  153.5W 3.2-5.4 AAAAA  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: 16OCT2021 10:09:33  36.3N  106.8W ML=2.7  EMSC   NEW MEXICO                   

P: 14OCT2021 137905    37.0N  105.2W 2.0-3.9 AABAA  Colorado area              

 

NEIC reported this earthquake of M 2.7 in Lindrith, New Mexico was felt with intensity II-III in the area(s) of Lindrith, New Mexico.

 

O: 17OCT2021 02:19:19  44.3N  115.0W Ml=2.2  EMSC   SOUTHERN IDAHO

O: 16OCT2021 21:36:55  44.3N  115.0W Ml=2.1  EMSC   SOUTHERN IDAHO               

P: 17OCT2021 137982    44.4N  115.1W 2.0-4.0 AAAAA  Montana/Idaho              

 

O: 16OCT2021 23:49:47  45.1N  114.4W Ml=2.8  EMSC   SOUTHERN IDAHO               

P: 17OCT2021 137982    44.4N  115.1W 2.0-4.0 AAAAA  Montana/Idaho              

 

O: 16OCT2021 08:30:50  46.4N  116.6W ML=2.9  EMSC   NORTHERN IDAHO               

P: 19OCT2021 137984    47.7N  117.4W 2.0-3.9 BBAAA  Montana/Idaho              

 

NEIC reported this earthquake of M 2.9 in Northern Idaho was felt with intensity II-III in the area(s) of Northern Idaho at Reubens, Culdesac, Lapwal, Winchester, Lewiston, and in Asotin, Clarkston, Washington.

 

O: 16OCT2021 22:34:15  31.7N  104.4W ML=2.5  EMSC   WESTERN TEXAS                

 

EASTERN U.S./CANADA

 

O: 16OCT2021 09:06:17  36.1N   89.8W Md=2.1  EMSC   SOUTHEASTERN MISSOURI        

P: 15OCT2021 137915    36.5N   89.6W 2.0-4.3 AAAAA  New Madrid area             

 

O: 16OCT2021 10:09:33  36.3N  106.8W ML=2.7  EMSC   NEW MEXICO                   

P: 14OCT2021 137905    37.0N  105.2W 2.0-3.9 AABAA  Colorado area              

 

O: 16OCT2021 21:29:41  36.4N   92.4W Md=2.1  EMSC   ARKANSAS                      

P: 15OCT2021 137915    36.5N   89.6W 2.0-4.3 AABAA  New Madrid area            

 

HAWAII

 

O: 17OCT2021 03:41:53  19.2N  155.5W ML=3.2  EMSC   ISLAND OF HAWAII, HAWAII     

P: 17OCT2021 137858    19.4N  155.1W 3.0-4.6 AAAAA  Hawaii                      

 

NEIC reported this earthquake of M 3.0 in Hawaii was felt with intensity II-III in the area(s) of Hawaii in Hawaii National Park, Naalehu, Volcano and Captain Cook.

QUIET CONDITIONS RETURN TO GLOBAL SEISMICITY

 

EARTHQUAKE SUMMARY FOR OCTOBER 15, 2021

 

It was a very quiet day in global seismicity. There were no event of M>=5.2 located in the world in the past day and no significant regional events were identified. Ongoing eruptions in the Canary Islands at Cumbre Viejo, La Palma and in Kiluaea, Hawaii, however continued with considerable energy. The strongest earthquake associated with the La Palma eruption was an M 4.5, the largest to date in this eruption which began in mid-September. This was noted in the previous issue of this summary as:

 

 

"The eruption at Cumbre Viejo in La Palma, Canary Islands, Spain continued today at elevated levels. An M 4.4 in the region today was the strongest earthquake in the current eruption and before since an M 5.4 on December 27, 2013. Lava overflowed the cone of Cumbre Viejo today for the first time indicating a further strong eruption is likely.  Forecast 137880 had expected today's activity in the Canary Islands within  about 50 km around October 14." (October 13-14, 2021)

 

Forecast 137880 had expected continuing activity in the Canary Islands was likely around October 14.

 

O: 15OCT2021 17:47:42  28.6N   17.8W ML=4.0  EMSC   CANARY ISLANDS, SPAIN REGION

O: 15OCT2021 10:48:30  28.7N   17.8W ML=4.0  EMSC   CANARY ISLANDS, SPAIN REGION

O: 16OCT2021 04:41:52  28.7N   17.7W ML=4.3  EMSC   CANARY ISLANDS, SPAIN REGION

O: 15OCT2021 07:02:17  28.6N   17.8W ML=4.5  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary Islands             

 

The strongest earthquake in the U.S. or Canada today was an M 3.6-3.9 in Hawaii. NEIC reported this earthquake of M 3.6-3.9 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Naalehu, Volcano, Captain Cook, Mountain View, Hilo, Holualoa, Kealakekua, Papaikou, Kailua Kona and Kamuela. This continues active conditions in this area which began with the eruption of Kilauea last month and included a large M 6.2 on October 10. Today's event occurred within minutes of local solar midnight and may have been promoted by high tidal stresses which maximize near this hour. Forecast 137858 had expected today's event within about 25 km around October 17.

 

O: 15OCT2021 10:03:12  19.2N  155.4W ML=3.9  EMSC   ISLAND OF HAWAII, HAWAII     

P: 17OCT2021 137858    19.4N  155.1W 3.0-4.6 AAAAA  Hawaii                     

 

 

The strongest earthquake in the world today was an M 5.1 in the Kuril Islands. It was not reported felt in this remote area. The only event within about 150 km of this epicenter in the past year was an M 5.3 on August 2, 2021 and an aftershock of M 5.1 on August 10, 2021. The last event with significantly larger magnitude in this area was an M 7.0 on February 13, 2020. Forecast 137975 had expected today's activity in this region around October 16.

 

O: 16OCT2021 02:02:12  45.8N  149.3E mb=5.1  EMSC   KURIL ISLANDS                

P: 16OCT2021 137975    44.0N  148.0E 3.5-5.8 ABAAA  Hokkaido, Japan            

 

The strongest earthquake in the U.S. or Canada outside Hawaii today was an M 3.4 in Central Alaska. The last earthquake within about 100 km of this epicenter with M>=3.4 was an M 3.4 on August 13 and another on August 3, 2021. An M 4.4 hit this area on July 19, 2021 and these may be regional aftershocks of that event. Forecast 138037 had expected this event within about 50 km was likely around October 16.

 

O: 15OCT2021 18:46:38  63.3N  150.7W ML=3.4  EMSC   CENTRAL ALASKA               

P: 16OCT2021 138037    62.9N  150.2W 3.2-5.4 AAAAA  Central Alaska             

 

An unusually large M 4.3 occurred in Poland today.  NEIC reported this earthquake of M 4.3 in Lubin, Poland was felt with intensity V in the area(s) of Lubin, Poland. The last earthquake in Poland within about 200 km of this epicenter with M>=4.3 was recorded by NEIC as occurring a year ago near today's epicenter on November 19, 2020; the last of larger magnitude was an M 4.9 on July 8, 2020. Forecast 137738 had expected today's event in early October.

 

O: 16OCT2021 04:01:44  51.6N   16.2E mb=4.3  EMSC   POLAND                       

P:  6OCT2021 137738    51.0N   16.0E 3.0-4.7 CAAAA  Poland                     

P: 16OCT2021 138021    50.0N   12.0E 3.0-4.4 ABCAA  No. Germany                

 

QUIET CONDITIONS RETURN TO GLOBAL SEISMICITY

 

EARTHQUAKE SUMMARY FOR OCTOBER 15, 2021

 

It was a very quiet day in global seismicity. There were no event of M>=5.2 located in the world in the past day and no significant regional events were identified. Ongoing eruptions in the Canary Islands at Cumbre Viejo, La Palma and in Kiluaea, Hawaii, however continued with considerable energy. The strongest earthquake associated with the La Palma eruption was an M 4.5, the largest to date in this eruption which began in mid-September. This was noted in the previous issue of this summary as:

 

 

"The eruption at Cumbre Viejo in La Palma, Canary Islands, Spain continued today at elevated levels. An M 4.4 in the region today was the strongest earthquake in the current eruption and before since an M 5.4 on December 27, 2013. Lava overflowed the cone of Cumbre Viejo today for the first time indicating a further strong eruption is likely.  Forecast 137880 had expected today's activity in the Canary Islands within  about 50 km around October 14." (October 13-14, 2021)

 

Forecast 137880 had expected continuing activity in the Canary Islands was likely around October 14.

 

O: 15OCT2021 17:47:42  28.6N   17.8W ML=4.0  EMSC   CANARY ISLANDS, SPAIN REGION

O: 15OCT2021 10:48:30  28.7N   17.8W ML=4.0  EMSC   CANARY ISLANDS, SPAIN REGION

O: 16OCT2021 04:41:52  28.7N   17.7W ML=4.3  EMSC   CANARY ISLANDS, SPAIN REGION

O: 15OCT2021 07:02:17  28.6N   17.8W ML=4.5  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary Islands             

 

The strongest earthquake in the U.S. or Canada today was an M 3.6-3.9 in Hawaii. NEIC reported this earthquake of M 3.6-3.9 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Naalehu, Volcano, Captain Cook, Mountain View, Hilo, Holualoa, Kealakekua, Papaikou, Kailua Kona and Kamuela. This continues active conditions in this area which began with the eruption of Kilauea last month and included a large M 6.2 on October 10. Today's event occurred within minutes of local solar midnight and may have been promoted by high tidal stresses which maximize near this hour. Forecast 137858 had expected today's event within about 25 km around October 17.

 

O: 15OCT2021 10:03:12  19.2N  155.4W ML=3.9  EMSC   ISLAND OF HAWAII, HAWAII     

P: 17OCT2021 137858    19.4N  155.1W 3.0-4.6 AAAAA  Hawaii                     

 

 

The strongest earthquake in the world today was an M 5.1 in the Kuril Islands. It was not reported felt in this remote area. The only event within about 150 km of this epicenter in the past year was an M 5.3 on August 2, 2021 and an aftershock of M 5.1 on August 10, 2021. The last event with significantly larger magnitude in this area was an M 7.0 on February 13, 2020. Forecast 137975 had expected today's activity in this region around October 16.

 

O: 16OCT2021 02:02:12  45.8N  149.3E mb=5.1  EMSC   KURIL ISLANDS                

P: 16OCT2021 137975    44.0N  148.0E 3.5-5.8 ABAAA  Hokkaido, Japan            

 

The strongest earthquake in the U.S. or Canada outside Hawaii today was an M 3.4 in Central Alaska. The last earthquake within about 100 km of this epicenter with M>=3.4 was an M 3.4 on August 13 and another on August 3, 2021. An M 4.4 hit this area on July 19, 2021 and these may be regional aftershocks of that event. Forecast 138037 had expected this event within about 50 km was likely around October 16.

 

O: 15OCT2021 18:46:38  63.3N  150.7W ML=3.4  EMSC   CENTRAL ALASKA               

P: 16OCT2021 138037    62.9N  150.2W 3.2-5.4 AAAAA  Central Alaska             

 

An unusually large M 4.3 occurred in Poland today.  NEIC reported this earthquake of M 4.3 in Lubin, Poland was felt with intensity V in the area(s) of Lubin, Poland. The last earthquake in Poland within about 200 km of this epicenter with M>=4.3 was recorded by NEIC as occurring a year ago near today's epicenter on November 19, 2020; the last of larger magnitude was an M 4.9 on July 8, 2020. Forecast 137738 had expected today's event in early October.

 

O: 16OCT2021 04:01:44  51.6N   16.2E mb=4.3  EMSC   POLAND                       

P:  6OCT2021 137738    51.0N   16.0E 3.0-4.7 CAAAA  Poland                     

P: 16OCT2021 138021    50.0N   12.0E 3.0-4.4 ABCAA  No. Germany                

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: 16OCT2021 01:46:25  24.3N   93.8E ML=3.7  EMSC   MANIPUR, INDIA REGION        

P: 15OCT2021 137886    25.0N   95.0E 4.0-5.6 AAAAA  Myanmar                    

 

O: 16OCT2021 04:21:58  55.7N  162.3E mb=4.0  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 20OCT2021 138017    54.0N  162.0E 4.0-5.4 BBAAA  E. of Kamchatka            

 

O: 15OCT2021 10:35:41  29.5N   87.8E ML=4.2  EMSC   WESTERN XIZANG               

P: 18OCT2021 137966    30.0N   83.0E 3.8-5.4 BACAA  Xizang                     

 

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

 

INDONESIA AND PHILIPPINES

 

O: 15OCT2021 19:48:35   1.5N   97.2E mb=4.5  EMSC   NIAS REGION, INDONESIA       

P: 16OCT2021 137825     2.0N   97.0E 4.0-5.5 AAAAA  Nicobar Islands            

 

O: 15OCT2021 07:44:54   2.6S  129.5E ML=4.2  EMSC   SERAM, INDONESIA             

P: 15OCT2021 137830     3.0S  129.0E 4.0-5.5 AAAAA  Ceram area                 

 

O: 15OCT2021 09:03:21   3.9N  126.2E ML=4.3  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 20OCT2021 137824     4.0N  125.0E 4.0-5.4 BAAAA  Mindanao, Philippines      

 

O: 15OCT2021 23:17:26   4.9S  103.0E mb=4.8  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 19OCT2021 137842     6.0S  103.0E 4.0-5.6 BBAAA  So. of Sumatera            

 

O: 15OCT2021 17:55:21   5.4N  127.1E mb=4.5  EMSC   PHILIPPINE ISLANDS REGION    

P:  6OCT2021 137556     5.0N  128.0E 4.0-5.4 CAAAA  Halmahera                  

 

O: 15OCT2021 23:03:43   6.7S  104.3E ML=4.3  EMSC   SUNDA STRAIT, INDONESIA

O: 15OCT2021 20:34:08   6.6S  104.5E ML=4.3  EMSC   SUNDA STRAIT, INDONESIA      

P: 17OCT2021 137842     6.0S  104.0E 4.0-5.4 AAAAA  So. of Sumatera            

 

O: 15OCT2021 19:52:39   7.2S  129.2E ML=4.0  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 15OCT2021 137849     7.0S  130.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O: 15OCT2021 22:38:33   7.7S  115.4E mb=4.3  EMSC   BALI SEA                     

P: 16OCT2021 137845     8.0S  117.0E 4.0-5.4 AABAA  Sumbawa Island area        

 

O: 16OCT2021 04:42:41   7.9N  126.9E ML=4.0  EMSC   MINDANAO, PHILIPPINES        

O: 15OCT2021 16:54:47   8.8N  126.5E mb=4.9  EMSC   MINDANAO, PHILIPPINES

P: 19OCT2021 137823     8.0N  127.0E 4.0-5.4 BAAAA  Halmahera                  

 

O: 15OCT2021 12:22:56  11.2S  113.1E ML=4.4  EMSC   SOUTH OF JAVA, INDONESIA     

P: 12OCT2021 137840     9.0S  113.0E 4.0-5.4 BCAAA  So. of Bali                 

 

O: 15OCT2021 20:18:21   8.3S  115.4E Mw=4.8  EMSC   BALI REGION, INDONESIA       

P: 16OCT2021 137845     8.0S  117.0E 4.0-5.4 AABAA  Sumbawa Island area        

 

 

CENTRAL AND SOUTH AMERICA

 

O: 15OCT2021 23:02:47  13.2N   89.3W mb=4.2  EMSC   OFFSHORE EL SALVADOR         

P: 14OCT2021 137855    13.0N   89.0W 3.5-5.3 AAAAA  Coast of Central America   

 

NEIC reported this earthquake of M 4.2 in El Salvador was felt with intensity II-III in the area(s) of El Salvador in Antiguo Cuscatlan and Nueva San Salvador, La Libertad.

 

O: 15OCT2021 14:51:59  14.4S   76.6W ML=4.0  EMSC   NEAR COAST OF CENTRAL PERU   

P: 13OCT2021 138049    13.0S   77.0W 4.0-5.8 ABAAA  Central Peru               

 

O: 15OCT2021 18:44:34  17.2N   85.1W mb=4.6  EMSC   NORTH OF HONDURAS            

P: 18OCT2021 137867    17.0N   86.0W 3.5-5.3 BAAAA  Nicaragua                  

 

O: 16OCT2021 03:46:35  18.4N   73.7W ML=3.3  EMSC   HAITI REGION

O: 16OCT2021 04:43:57  18.4N   73.6W ML=3.2  EMSC   HAITI REGION

O: 15OCT2021 08:33:20  18.5N   73.7W ML=3.3  EMSC   HAITI REGION

O: 16OCT2021 05:30:09  18.5N   73.8W ML=3.2  EMSC   HAITI REGION

O: 15OCT2021 07:24:17  18.8N   74.2W mb=4.0  EMSC   HAITI REGION

O: 15OCT2021 07:49:54  18.9N   74.0W ML=3.3  EMSC   HAITI REGION

O: 15OCT2021 09:18:29  18.9N   74.0W ML=3.4  EMSC   HAITI REGION

O: 15OCT2021 09:50:15  18.9N   74.0W ML=3.3  EMSC   HAITI REGION

O: 15OCT2021 10:43:28  18.4N   73.6W ML=3.3  EMSC   HAITI REGION                 

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 AAAAA  Haiti                       

 

NEIC reported this earthquake of M 4.0 in Haiti was felt with intensity II-III in the area(s) of Haiti in Jeremie, Grand Anse and Petit-Trou-de-Nippes.

 

O: 15OCT2021 19:54:58  19.3N   65.2W Md=3.6  EMSC   PUERTO RICO REGION            

P: 17OCT2021 137859    19.0N   65.0W 3.0-5.2 AAAAA  Leeward Islands            

 

O: 16OCT2021 02:25:59  19.1N   66.5W Md=3.5  EMSC   PUERTO RICO REGION           

P: 16OCT2021 137873    19.0N   67.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 15OCT2021 12:19:50  22.4S   70.6W mb=4.3  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

P: 19OCT2021 138060    23.0S   69.0W 4.0-5.4 BABAA  Coast No. Chile            

 

O: 15OCT2021 11:38:30  24.0S   67.0W mb=4.4  EMSC   SALTA, ARGENTINA             

P: 17OCT2021 138060    24.0S   68.0W 4.0-5.4 AAAAA  Argentina                  

 

O: 15OCT2021 10:57:36  27.7S   71.2W mb=4.4  EMSC   OFFSHORE ATACAMA, CHILE      

P: 14OCT2021 138061    29.0S   70.0W 4.0-5.6 ABAAA  Coast Central Chile        

 

O: 16OCT2021 03:37:24  31.7S   72.0W Mw=4.1  EMSC   OFFSHORE COQUIMBO, CHILE     

O: 15OCT2021 12:15:52  32.3S   71.7W ML=4.0  EMSC   OFFSHORE VALPARAISO, CHILE   

O: 15OCT2021 12:31:53  32.3S   71.8W ML=4.0  EMSC   OFFSHORE VALPARAISO, CHILE

P: 14OCT2021 138070    33.0S   72.0W 4.0-5.7 AAAAA  Central Chile              

 

O: 16OCT2021 07:04:24  42.3S   72.3W mb=4.6  EMSC   LOS LAGOS, CHILE             

P: 13OCT2021 138071    39.0S   73.0W 4.0-5.6 BCAAA  Central Chile              

 

O: 15OCT2021 14:39:53  50.3S   72.3W ML=4.1  EMSC   SANTA CRUZ, ARGENTINA        

 

NEIC reported an earthquake of M 4.9 in Trinidad and Tobago was felt with intensity II-III in the area(s) of Trinidad and Tobago at Scarborough.

 

AFRICA AND EUROPE

 

O: 15OCT2021 17:42:24  10.0N   41.6E mb=4.5  EMSC   ETHIOPIA                     

 

NEIC reported this earthquake of M 4.5 in Ethiopia was felt with intensity II-III in the area(s) of Ethiopia at Dire Dawa, Jiga, Tajurah.

 

O: 15OCT2021 15:02:55  27.6S   23.0E ML=3.0  EMSC   SOUTH AFRICA                  

P: 17OCT2021 138064    26.0S   28.0E 3.0-4.9 ABCAA  Rep. South Africa          

 

O: 15OCT2021 17:47:42  28.6N   17.8W ML=4.0  EMSC   CANARY ISLANDS, SPAIN REGION

O: 15OCT2021 10:48:30  28.7N   17.8W ML=4.0  EMSC   CANARY ISLANDS, SPAIN REGION

O: 16OCT2021 04:41:52  28.7N   17.7W ML=4.3  EMSC   CANARY ISLANDS, SPAIN REGION

O: 15OCT2021 07:02:17  28.6N   17.8W ML=4.5  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary Islands             

 

O: 16OCT2021 00:23:26   0.3S   29.8E mb=4.7  EMSC   LAKE EDWARD REGION, UGANDA   

P:  7OCT2021 137568     6.0S   30.0E 3.0-4.6 CDAAA  Lake Victoria area         

 

NEIC reported this earthquake of M 4.7 in Lake Edward, Uganda was felt with intensity III-IV in the area(s) of Lake Edward, Uganda Bushenyi, Mbarara, Kabale, and Kampala.

 

O: 15OCT2021 23:25:43  34.9N   26.4E ML=4.1  EMSC   CRETE, GREECE                

P: 13OCT2021 137906    34.0N   27.0E 3.0-5.6 AAAAA  Crete                      

 

NEIC reported this earthquake of M 4.1 in Crete was felt with intensity II-III in the area(s) of Crete at Palaikastron.

 

O: 16OCT2021 04:01:44  51.6N   16.2E mb=4.3  EMSC   POLAND                       

P:  6OCT2021 137738    51.0N   16.0E 3.0-4.7 CAAAA  Poland                      

P: 16OCT2021 138021    50.0N   12.0E 3.0-4.4 ABCAA  No. Germany                

 

SOUTHWEST PACIFIC

 

O: 15OCT2021 17:14:13  19.8S  177.8W mb=4.4  EMSC   FIJI REGION                  

P: 13OCT2021 138068    20.0S  179.0W 4.0-5.4 AAAAA  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

 

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

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

O: 15OCT2021 18:34:30  26.3N  128.3E ML=4.0  EMSC   RYUKYU ISLANDS, JAPAN        

P: 14OCT2021 137887    28.0N  128.0E 4.0-5.4 ABAAA  Ryukyu Islands             

 

O: 16OCT2021 02:02:12  45.8N  149.3E mb=5.1  EMSC   KURIL ISLANDS                

P: 16OCT2021 137975    44.0N  148.0E 3.5-5.8 ABAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 15OCT2021 07:25:04  31.1N  115.4W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO      

P: 17OCT2021 137929    31.9N  116.3W 2.5-4.7 AAAAA  So. California             

 

O: 16OCT2021 05:52:31  34.9N  119.0W Ml=2.0  EMSC   CENTRAL CALIFORNIA            

P: 13OCT2021 137943    34.9N  119.0W 2.5-4.7 BAAAA  So. California             

 

O: 16OCT2021 04:20:19  35.5N  118.3W Ml=2.7  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2021 137944    35.6N  118.4W 2.5-4.7 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.7 in Caliente, Central California was felt with intensity II-III in the area(s) of Caliente, Central California.

 

O: 15OCT2021 21:07:48  36.4N  120.9W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 19OCT2021 137898    36.2N  120.8W 2.5-4.8 BAAAA  Central California         

 

O: 16OCT2021 06:31:50  38.2N  117.9W ML=2.5  EMSC   NEVADA

O: 15OCT2021 12:36:04  38.2N  117.9W ML=3.4  EMSC   NEVADA                       

P: 13OCT2021 137896    37.5N  118.6W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 15OCT2021 13:35:40  38.9N  119.2W ml=2.7  EMSC   NEVADA                       

P: 15OCT2021 137897    39.1N  119.6W 2.5-4.4 AAAAA  California/Nevada area     

P: 16OCT2021 137897    38.8N  119.6W 2.5-4.4 AAAAA  California/Nevada area     

 

O: 15OCT2021 19:54:07  38.9N  123.0W Ml=3.0  EMSC   NORTHERN CALIFORNIA          

P: 16OCT2021 137901    38.9N  122.8W 2.5-4.6 AAAAA  Central California         

 

NEIC reported this earthquake of M 3.0 in Northern California was felt with intensity II-III in the area(s) of Northern California in Hopland, Cloverdale, Lakeport, Kelseyville, Ukiah, Healdsburg, Guerneville, Sebastopol, Littleriver and Concord.

 

O: 16OCT2021 06:18:08  40.0N  123.8W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P: 17OCT2021 137993    40.2N  124.2W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O: 15OCT2021 23:58:26  56.2N  156.3W ML=3.1  EMSC   ALASKA PENINSULA

O: 16OCT2021 04:27:33  56.3N  156.4W ML=3.1  EMSC   ALASKA PENINSULA

O: 15OCT2021 08:18:34  54.5N  161.6W ml=3.4  EMSC   ALASKA PENINSULA             

P: 16OCT2021 138028    54.5N  161.8W 3.5-5.1 AAAAA  Unimak Islands, Aleutians  

 

O: 15OCT2021 17:18:07  56.2N  156.4W ML=3.3  EMSC   ALASKA PENINSULA             

P: 18OCT2021 138011    55.7N  157.9W 3.5-4.9 BAAAA  Alaska Peninsula           

 

O: 15OCT2021 18:46:38  63.3N  150.7W ML=3.4  EMSC   CENTRAL ALASKA               

P: 16OCT2021 138037    62.9N  150.2W 3.2-5.4 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 15OCT2021 17:30:08  50.5N  130.3W MB=3.3  ECAN Port Hardy, BC                 

P: 14OCT2021 138016    50.2N  129.8W 3.0-5.2 AAAAA  British Colombia           

 

O: 15OCT2021 12:20:26  49.7N  127.1W ML=3.3  EMSC   VANCOUVER ISLAND, CANADA REGIO

O: 15OCT2021 12:20:26  49.7N  127.1W MB=3.3  ECAN Gold River, BC                 

P: 13OCT2021 138005    48.7N  129.0W 2.8-5.1 AABAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 15OCT2021 19:37:23  31.6N  104.2W ML=2.1  EMSC   WESTERN TEXAS

O: 15OCT2021 09:55:05  31.2N  103.4W ML=2.0  EMSC   WESTERN TEXAS                

 

EASTERN U.S./CANADA

 

No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.

 

HAWAII

 

O: 15OCT2021 10:03:12  19.2N  155.4W ML=3.9  EMSC   ISLAND OF HAWAII, HAWAII      

P: 17OCT2021 137858    19.4N  155.1W 3.0-4.6 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.6-3.9 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Naalehu, Volcano, Captain Cook, Mountain View, Hilo, Holualoa, Kealakekua, Papaikou, Kailua Kona and Kamuela.

 

STRONG QUAKE IN SOLOMON ISLANDS ON GEOMAGNETIC EQUATOR

 

EARTHQUAKE SUMMARY FOR OCTOBER 14, 2021

 

Strong seismicity continued today near the geomagnetic equator. This activity  included an M 6.4 in the central Solomon Islands and an M 5.5 in the Molucca Sea of Indonesia. This activity follows the strong geomagnetic storm which has now concluded. This summary noted this possibility in previous summaries as:

 

"The strongest geomagnetic storm in more than three years occurred today. Bright, mostly green aurora were seen throughout most of North America and Asia with this storm. The height of the storm occurred between 09:00 and 10:00 UT. At the same time an M 6.5 occurred in the sub-solar region of Crete, Greece and the Dodecanese Islands. This summary had noted this geomagnetic storm as:

 

"The geomagnetic field saw major storm  conditions today. The AP level was 45.  High latitude geomagnetic field  saw stormy conditions with AP 60. This is the strongest geomagnetic storm since AP reached 45 on September 1, 2019. The last of greater disturbance occurred on August 26, 2018 when AP reached 76 and high latitude AP reached 90. Enhanced seismicity is likely at higher latitudes and near the geomagnetic equator with this storm in the next several days." (October 12, 2021)

 

The strongest earthquake in the world today was an M 6.4 in the Central Solomon Islands. NEIC reported it was felt with maximum intensity VII in Honiara, Guadalcanal; VI in Buala Isabel; V in Tulagi; IV in Kirakira and Ulawa, Arawa, and Kokopo, New Britain and in Pranguna, Northern Solomon Islands. This event is directly on the local geomagnetic equator. This is the strongest earthquake within about 200 km of this epicenter since an M 7.0 on November 18, 2015, a regional aftershock of four earthquakes in the area in July and August, 2015. Forecast 137843 had expected today's event within about 50 km was likely around October 16. This event is at 103 degrees from the M 7.2 in Guerrero, Mexico of September 8 and was probably promoted by strong energy from  that source.

 

O: 15OCT2021 02:44:58   8.9S  158.5E Mw=6.4  EMSC   SOLOMON ISLANDS              

P: 16OCT2021 137843     9.0S  158.0E 4.0-5.4 AAAAA  Solomon Islands            

 

A moderately strong earthquake of M 5.5 also occurred in Indonesia in the Molucca Sea where it was felt with intensity II in Bitung, Sulawesi and Ternate Maluku. BMG reported this earthquake with M 5.8 was felt with intensity III in Manado, Bitung, Bolaang Mongondow Timur, Bolaang Mongondow Selatan and II-III in Minahasa, Minahasa Utara, Ternate and Tidore. The M 5.6 occurred within minutes of local solar midnight, a time when tidal and geomagnetic effects maximize and was probably promoted by those stresses. This is probably an aftershock of an M 5.7 on October 11, 2021 and an M 6.1 on June 3, 2021. Forecast 137824 expected today's activity to the north around October 18. This epicenter is at the seventh node (52 degrees) from the M 7.2 in the Vanuatu region of October 2 and was probably promoted by energy from that source.

 

O: 14OCT2021 15:32:07   1.2N  126.3E mb=4.4  EMSC   MOLUCCA SEA

O: 14OCT2021 15:16:29   1.2N  126.2E Mw=5.6  EMSC   MOLUCCA SEA                  

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 BBAAA  Mindanao, Philippines      

 

The strongest seismicity in the U.S. or Canada today were events of M 4.3 in the Alaska Peninsula following an M 6.9 in that area three days ago and an M 4.1 in the Rat Islands. Neither of these were reported felt and are not unusual earthquakes at this time. They had been expected in forecasts 138011 and 138024 within about 50 km in mid-October.

 

O: 14OCT2021 14:09:58  56.3N  156.4W ML=3.0  EMSC   ALASKA PENINSULA

O: 14OCT2021 23:50:09  56.3N  156.5W ML=3.4  EMSC   ALASKA PENINSULA

O: 15OCT2021 02:45:40  56.3N  156.4W ML=3.1  EMSC   ALASKA PENINSULA

O: 15OCT2021 02:50:29  55.2N  157.4W Mw=4.3  EMSC   ALASKA PENINSULA             

P: 18OCT2021 138011    55.7N  157.9W 3.5-4.9 BAAAA  Alaska Peninsula           

 

O: 14OCT2021 21:30:53  51.8N  176.8E mb=4.1  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 17OCT2021 138024    52.0N  177.0E 4.0-5.8 BAAAA  Rat Islands                

 

The eruption of Cumbre Viejo in the Canary Islands continued today. This continues the intensification of this eruption which was noted in the previous issue of this summary as:

 

 

"The eruption at Cumbre Viejo in La Palma, Canary Islands, Spain continued today at elevated levels. An M 4.4 in the region today was the strongest earthquake in the current eruption and before since an M 5.4 on December 27, 2013. Lava overflowed the cone of Cumbre Viejo today for the first time indicating a further strong eruption is likely.  Forecast 137880 had expected today's activity in the Canary Islands within  about 50 km around October 14." (October 13-14, 2021)

 

Note that the M 4.5 today - larger than yesterday's M 4.4 – is now the strongest recent earthquake in the Canary Islands.

 

O: 14OCT2021 12:38:57  28.7N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION

O: 15OCT2021 07:02:17  28.6N   17.8W ML=4.5  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary Islands             

STRONG QUAKE IN SOLOMON ISLANDS ON GEOMAGNETIC EQUATOR

 

EARTHQUAKE SUMMARY FOR OCTOBER 14, 2021

 

Strong seismicity continued today near the geomagnetic equator. This activity  included an M 6.4 in the central Solomon Islands and an M 5.5 in the Molucca Sea of Indonesia. This activity follows the strong geomagnetic storm which has now concluded. This summary noted this possibility in previous summaries as:

 

"The strongest geomagnetic storm in more than three years occurred today. Bright, mostly green aurora were seen throughout most of North America and Asia with this storm. The height of the storm occurred between 09:00 and 10:00 UT. At the same time an M 6.5 occurred in the sub-solar region of Crete, Greece and the Dodecanese Islands. This summary had noted this geomagnetic storm as:

 

"The geomagnetic field saw major storm  conditions today. The AP level was 45.  High latitude geomagnetic field  saw stormy conditions with AP 60. This is the strongest geomagnetic storm since AP reached 45 on September 1, 2019. The last of greater disturbance occurred on August 26, 2018 when AP reached 76 and high latitude AP reached 90. Enhanced seismicity is likely at higher latitudes and near the geomagnetic equator with this storm in the next several days." (October 12, 2021)

 

The strongest earthquake in the world today was an M 6.4 in the Central Solomon Islands. NEIC reported it was felt with maximum intensity VII in Honiara, Guadalcanal; VI in Buala Isabel; V in Tulagi; IV in Kirakira and Ulawa, Arawa, and Kokopo, New Britain and in Pranguna, Northern Solomon Islands. This event is directly on the local geomagnetic equator. This is the strongest earthquake within about 200 km of this epicenter since an M 7.0 on November 18, 2015, a regional aftershock of four earthquakes in the area in July and August, 2015. Forecast 137843 had expected today's event within about 50 km was likely around October 16. This event is at 103 degrees from the M 7.2 in Guerrero, Mexico of September 8 and was probably promoted by strong energy from  that source.

 

O: 15OCT2021 02:44:58   8.9S  158.5E Mw=6.4  EMSC   SOLOMON ISLANDS              

P: 16OCT2021 137843     9.0S  158.0E 4.0-5.4 AAAAA  Solomon Islands            

 

A moderately strong earthquake of M 5.5 also occurred in Indonesia in the Molucca Sea where it was felt with intensity II in Bitung, Sulawesi and Ternate Maluku. BMG reported this earthquake with M 5.8 was felt with intensity III in Manado, Bitung, Bolaang Mongondow Timur, Bolaang Mongondow Selatan and II-III in Minahasa, Minahasa Utara, Ternate and Tidore. The M 5.6 occurred within minutes of local solar midnight, a time when tidal and geomagnetic effects maximize and was probably promoted by those stresses. This is probably an aftershock of an M 5.7 on October 11, 2021 and an M 6.1 on June 3, 2021. Forecast 137824 expected today's activity to the north around October 18. This epicenter is at the seventh node (52 degrees) from the M 7.2 in the Vanuatu region of October 2 and was probably promoted by energy from that source.

 

O: 14OCT2021 15:32:07   1.2N  126.3E mb=4.4  EMSC   MOLUCCA SEA

O: 14OCT2021 15:16:29   1.2N  126.2E Mw=5.6  EMSC   MOLUCCA SEA                  

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 BBAAA  Mindanao, Philippines      

 

The strongest seismicity in the U.S. or Canada today were events of M 4.3 in the Alaska Peninsula following an M 6.9 in that area three days ago and an M 4.1 in the Rat Islands. Neither of these were reported felt and are not unusual earthquakes at this time. They had been expected in forecasts 138011 and 138024 within about 50 km in mid-October.

 

O: 14OCT2021 14:09:58  56.3N  156.4W ML=3.0  EMSC   ALASKA PENINSULA

O: 14OCT2021 23:50:09  56.3N  156.5W ML=3.4  EMSC   ALASKA PENINSULA

O: 15OCT2021 02:45:40  56.3N  156.4W ML=3.1  EMSC   ALASKA PENINSULA

O: 15OCT2021 02:50:29  55.2N  157.4W Mw=4.3  EMSC   ALASKA PENINSULA             

P: 18OCT2021 138011    55.7N  157.9W 3.5-4.9 BAAAA  Alaska Peninsula           

 

O: 14OCT2021 21:30:53  51.8N  176.8E mb=4.1  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 17OCT2021 138024    52.0N  177.0E 4.0-5.8 BAAAA  Rat Islands                

 

The eruption of Cumbre Viejo in the Canary Islands continued today. This continues the intensification of this eruption which was noted in the previous issue of this summary as:

 

 

"The eruption at Cumbre Viejo in La Palma, Canary Islands, Spain continued today at elevated levels. An M 4.4 in the region today was the strongest earthquake in the current eruption and before since an M 5.4 on December 27, 2013. Lava overflowed the cone of Cumbre Viejo today for the first time indicating a further strong eruption is likely.  Forecast 137880 had expected today's activity in the Canary Islands within  about 50 km around October 14." (October 13-14, 2021)

 

Note that the M 4.5 today - larger than yesterday's M 4.4 – is now the strongest recent earthquake in the Canary Islands.

 

O: 14OCT2021 12:38:57  28.7N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION

O: 15OCT2021 07:02:17  28.6N   17.8W ML=4.5  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary 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: 14OCT2021 21:10:01  44.2N  120.2E mb=4.4  EMSC   EASTERN NEI MONGOL, CHINA    

P: 15OCT2021 137985    45.0N  124.0E 3.5-5.4 AACAA  NE China                   

 

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

 

INDONESIA AND PHILIPPINES

 

O: 14OCT2021 15:32:07   1.2N  126.3E mb=4.4  EMSC   MOLUCCA SEA

O: 14OCT2021 15:16:29   1.2N  126.2E Mw=5.6  EMSC   MOLUCCA SEA                  

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 BBAAA  Mindanao, Philippines      

 

O: 14OCT2021 16:44:27   0.0N   97.8E ML=4.0  EMSC   NIAS REGION, INDONESIA       

P: 19OCT2021 137826     1.0N   98.0E 4.0-5.4 BAAAA  So. Sumatera               

 

O: 14OCT2021 17:55:54   0.6S  100.5E ML=4.0  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  7OCT2021 137578     2.0S  100.0E 4.0-5.5 CBAAA  So. of Sumatera            

 

O: 14OCT2021 23:32:39   1.6S  135.7E ML=4.1  EMSC   BIAK REGION, INDONESIA       

P: 13OCT2021 137846     2.0S  135.0E 4.0-5.5 AAAAA  West Irian, PNG            

 

O: 14OCT2021 17:40:26   2.0S  121.0E ML=4.1  EMSC   SULAWESI, INDONESIA          

P: 10OCT2021 137580     1.0S  122.0E 4.0-5.4 BAAAA  Sulawesi area              

 

O: 15OCT2021 03:30:35   3.6N  123.2E mb=4.5  EMSC   CELEBES SEA                   

P: 20OCT2021 137824     4.0N  123.0E 4.0-5.5 BAAAA  Mindanao, Philippines      

 

O: 14OCT2021 07:14:34   6.0N  126.0E mb=4.5  EMSC   MINDANAO, PHILIPPINES        

P: 16OCT2021 137819     7.0N  124.0E 4.0-5.6 AABAA  Central Philippines        

 

O: 15OCT2021 03:59:38   6.6S  149.7E ML=4.6  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 15OCT2021 137836     6.0S  150.0E 4.0-5.6 AAAAA  New Ireland                

 

O: 14OCT2021 21:19:05   6.8N  127.3E mb=4.9  EMSC   PHILIPPINE ISLANDS REGION    

P: 19OCT2021 137823     8.0N  127.0E 4.0-5.4 BBAAA  Halmahera                  

 

O: 14OCT2021 20:49:18   7.2S  130.1E mb=4.7  EMSC   KEP. TANIMBAR REGION, INDONESI

P: 15OCT2021 137849     7.0S  130.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O: 14OCT2021 10:37:41  11.1N  121.8E ML=4.2  EMSC   PANAY, PHILIPPINES           

P: 18OCT2021 137861    12.0N  122.0E 3.5-5.0 BAAAA  Luzon, Philippines         

 

O: 14OCT2021 14:08:37  13.7N  123.2E ML=4.2  EMSC   LUZON, PHILIPPINES           

P: 14OCT2021 137861    14.0N  122.0E 3.5-5.1 AAAAA  Luzon, Philippines         

 

 

CENTRAL AND SOUTH AMERICA

 

O: 14OCT2021 17:41     27.6S   70.9W mb=4.1  GUC    Atacama at Caldera, Copiapo an

P: 14OCT2021 138061    29.0S   70.0W 4.0-5.6 ABAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity  III in  Atacama at Caldera, Copiapo and Tierra Amarilla, Chile.

 

O: 15OCT2021 02:51:45  13.0S   71.5W ML=4.1  EMSC   CENTRAL PERU                 

P: 12OCT2021 138050    15.0S   71.0W 4.0-5.6 BBAAA  Central Peru               

P: 13OCT2021 138049    13.0S   77.0W 4.0-5.8 AACAA  Central Peru               

 

O: 14OCT2021 11:52:25  14.6N   92.6W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 15OCT2021 137857    15.0N   92.0W 3.5-5.1 AAAAA  Guatemala                   

 

O: 14OCT2021 15:32:37  15.6N   95.0W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 17OCT2021 137870    15.0N   96.0W 3.5-5.6 BAAAA  Oaxaca, Mexico             

 

O: 14OCT2021 15:03:25  15.8N   97.0W ML=4.0  EMSC   OAXACA, MEXICO                

P: 17OCT2021 137870    15.0N   96.0W 3.5-5.6 BAAAA  Oaxaca, Mexico             

 

O: 14OCT2021 12:53:40  16.3N   99.6W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 14OCT2021 137871    17.0N  100.0W 3.5-5.5 AAAAA  Oaxaca, Mexico             

 

O: 15OCT2021 01:51:31  16.5S   70.0W mb=4.2  EMSC   SOUTHERN PERU                

P: 12OCT2021 138056    16.0S   72.0W 4.0-5.6 BABAA  So. Peru/Bolivia           

 

O: 14OCT2021 15:06:45  16.7N   99.7W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 12OCT2021 137871    17.0N   99.0W 3.5-5.5 AAAAA  Oaxaca, Mexico             

 

O: 14OCT2021 13:26:10  16.9N   93.9W ML=4.2  EMSC   CHIAPAS, MEXICO              

P: 13OCT2021 137854    17.0N   94.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O: 15OCT2021 01:29:05  18.0N   67.0W Md=3.0  EMSC   PUERTO RICO                  

P: 16OCT2021 137873    19.0N   67.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 14OCT2021 09:53:29  18.5N   73.6W ML=3.3  EMSC   HAITI REGION                 

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 AAAAA  Haiti                      

 

O: 15OCT2021 01:51:37  19.2N   64.4W mb=3.8  EMSC   VIRGIN ISLANDS REGION        

P: 17OCT2021 137859    19.0N   65.0W 3.0-5.2 AAAAA  Leeward Islands            

 

O: 14OCT2021 18:23:03  24.1S   67.5W ML=4.2  EMSC   SALTA, ARGENTINA             

O: 15OCT2021 03:53:27  24.5S   68.9W mb=4.5  EMSC   ANTOFAGASTA, CHILE           

P: 17OCT2021 138060    24.0S   68.0W 4.0-5.4 AAAAA  Argentina                  

 

NEIC reported this earthquake of M 4.5 in Antofagasta, Chile was felt with intensity II-III in the area(s) of Antofagasta, Chile.

 

O: 14OCT2021 17:41:36  27.6S   71.0W ML=4.3  EMSC   OFFSHORE ATACAMA, CHILE      

P: 14OCT2021 138061    29.0S   70.0W 4.0-5.6 ABAAA  Coast Central Chile        

 

O: 15OCT2021 05:41:39  31.7S   72.1W mb=4.3  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 14OCT2021 138070    33.0S   72.0W 4.0-5.7 ABAAA  Central Chile              

 

NEIC reported this earthquake of M 4.3 in Valparaiso, Chile was felt with intensity II-III in the area(s) of Valparaiso, Chile at Vina del Mar.

 

 

AFRICA AND EUROPE

 

O: 14OCT2021 12:38:57  28.7N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION

O: 15OCT2021 07:02:17  28.6N   17.8W ML=4.5  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary Islands             

 

O: 15OCT2021 05:49:28   8.5S   32.2E mb=4.7  EMSC   LAKE RUKWA REGION, TANZANIA  

P:  7OCT2021 137568     6.0S   30.0E 3.0-4.6 CCBAA  Lake Victoria area         

 

NEIC reported this earthquake of M 4.7 in Tanzania was felt with intensity II-III in the area(s) of Tanzania at Matai Rukwa and Mbeya.

 

SOUTHWEST PACIFIC

 

O: 15OCT2021 02:44:58   8.9S  158.5E Mw=6.4  EMSC   SOLOMON ISLANDS              

P: 16OCT2021 137843     9.0S  158.0E 4.0-5.4 AAAAA  Solomon Islands            

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

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

today. GeoNet did not report any felt events in the area.

 

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: 14OCT2021 09:42:45  30.7N  114.2W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 15OCT2021 137930    31.0N  114.3W 2.5-4.7 AAAAA  So. California             

 

O: 15OCT2021 03:00:17  33.4N  117.0W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 15OCT2021 02:04:06  33.4N  117.0W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 14OCT2021 137935    33.9N  116.9W 2.5-4.4 AAAAA  So. California             

 

O: 15OCT2021 02:45:15  34.4N  119.4W Ml=2.4  EMSC   SOUTHERN CALIFORNIA          

P: 13OCT2021 137943    34.9N  119.0W 2.5-4.7 AAAAA  So. California             

 

O: 14OCT2021 17:56:25  35.7N  117.5W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 15OCT2021 05:14:53  35.6N  117.5W Ml=2.5  EMSC   SOUTHERN CALIFORNIA          

P: 13OCT2021 137946    35.8N  117.6W 2.5-4.8 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.5 in Ridgecrest, California was felt with intensity II-III in the area(s) of Ridgecrest, California.

 

O: 14OCT2021 23:19:26  36.3N  121.3W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 13OCT2021 137899    36.2N  121.8W 2.5-4.9 AAAAA  Central California         

 

O: 14OCT2021 07:20:23  38.2N  117.9W ml=2.0  EMSC   NEVADA                       

P: 14OCT2021 137895    37.4N  117.2W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 15OCT2021 03:46:03  38.5N  119.5W Md=2.1  EMSC   CENTRAL CALIFORNIA            

P: 16OCT2021 137897    38.8N  119.6W 2.5-4.4 AAAAA  California/Nevada area     

 

O: 15OCT2021 00:04:32  39.1N  115.7W ml=3.6  EMSC   NEVADA                       

P:  6OCT2021 137633    38.7N  115.4W 2.5-4.8 CAAAA  California/Nevada area     

 

 

ALASKA

 

O: 14OCT2021 14:09:58  56.3N  156.4W ML=3.0  EMSC   ALASKA PENINSULA

O: 14OCT2021 23:50:09  56.3N  156.5W ML=3.4  EMSC   ALASKA PENINSULA

O: 15OCT2021 02:45:40  56.3N  156.4W ML=3.1  EMSC   ALASKA PENINSULA

O: 15OCT2021 02:50:29  55.2N  157.4W Mw=4.3  EMSC   ALASKA PENINSULA             

P: 18OCT2021 138011    55.7N  157.9W 3.5-4.9 BAAAA  Alaska Peninsula           

 

O: 14OCT2021 21:30:53  51.8N  176.8E mb=4.1  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 17OCT2021 138024    52.0N  177.0E 4.0-5.8 BAAAA  Rat Islands                

 

O: 14OCT2021 20:16:47  62.0N  150.0W ml=3.0  EMSC   SOUTHERN ALASKA              

P: 16OCT2021 138037    62.9N  150.2W 3.2-5.4 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.0 in Southern Alaska was felt with intensity II-III in the area(s) of Southern Alaska at Willow, Wasilla and Anchorage.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 14OCT2021 22:06:39  46.9N  117.4W Ml=2.1  EMSC   WASHINGTON                   

P:  9OCT2021 137701    47.7N  117.4W 2.0-3.9 BAAAA  Montana/Idaho              

 

O: 14OCT2021 21:38:14  48.1N  121.9W Md=2.5  EMSC   WASHINGTON                   

P: 15OCT2021 138008    48.9N  122.1W 2.0-4.2 AAAAA  Washington state, U.S.     

 

O: 15OCT2021 12:20:26  49.7N  127.1W MB=3.3  ECAN Gold River, BC                 

O: 14OCT2021 17:53:28  48.9N  128.7W MB=3.7  ECAN Port Alice, BC                 

P: 13OCT2021 138005    48.7N  129.0W 2.8-5.1 AAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 14OCT2021 23:22:31  31.7N  104.4W ML=2.7  EMSC   WESTERN TEXAS                

O: 14OCT2021 22:05:10  32.0N  103.9W ML=3.2  EMSC   WESTERN TEXAS                

 

O: 14OCT2021 19:14:13  39.4N  110.3W Md=2.0  EMSC   UTAH

O: 14OCT2021 21:30:36  39.4N  110.3W Md=2.0  EMSC   UTAH

O: 14OCT2021 18:08:01  39.4N  110.3W Ml=2.0  EMSC   UTAH                         

P: 17OCT2021 137963    39.7N  110.8W 2.0-3.9 BAAAA  Utah area                  

 

O: 14OCT2021 07:51:54  45.6N  111.8W Ml=2.4  EMSC   WESTERN MONTANA              

P: 15OCT2021 137983    45.7N  112.1W 2.0-4.3 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 14OCT2021 21:53:22  35.1N   84.4W Md=2.3  EMSC   EASTERN TENNESSEE            

P: 17OCT2021 137953    34.0N   85.0W 2.0-3.9 BBAAA  Southeast U.S.              

 

HAWAII

 

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

 

GEOMAGNETIC STORM ACTIVATES GEOMAGNETIC EQUATOR AND HIGH LATITUDES

 

EARTHQUAKE SUMMARY FOR OCTOBER 13, 2021

 

The strongest geomagnetic storm in nearly three years was described in the previous issue of this summary was followed today by moderate and unusual earthquakes near the geomagnetic equator in Vanuatu (M 5.6), the Banda Sea, Indonesia (M 5.0) and in  Southern Argentina (M 5.4). The note on this storm in the previous issue of this summary was:

 

 

"The strongest geomagnetic storm in more than three years occurred today. Bright, mostly green aurora were seen throughout most of North America and Asia with this storm. The height of the storm occurred between 09:00 and 10:00 UT. At the same time an M 6.5 occurred in the sub-solar region of Crete, Greece and the Dodecanese Islands. This summary had noted this geomagnetic storm as:

 

"The geomagnetic field saw major storm  conditions today. The AP level was 45.  High latitude geomagnetic field  saw stormy conditions with AP 60. This is the strongest geomagnetic storm since AP reached 45 on September 1, 2019. The last of greater disturbance occurred on August 26, 2018 when AP reached 76 and high latitude AP reached 90. Enhanced seismicity is likely at higher latitudes and near the geomagnetic equator with this storm in the next several days." (October 12, 2021)

 

The strongest earthquake in the world today was an M 5.6 in central Vanuatu. NEIC reported this earthquake of M 5.6 in Central Vanuatu was felt with intensity II-III in the area(s) of Central Vanuatu a Norsup, Malampa. Vila Shefa; IV in Sola Torba, Luganville and V in Port Olry and Longama Paname.  This is probably an aftershock of an M 6.9 north of this on August 18, 2021 Forecast 138059 had expected today's activity was likely within about 50 km of this epicenter around October 14.

 

O: 14OCT2021 05:51:56  15.0S  167.5E Mw=5.6  EMSC   VANUATU

O: 13OCT2021 22:05:03  15.8S  167.9E mb=4.4  EMSC   VANUATU

O: 13OCT2021 22:25:57  14.2S  167.4E mb=4.5  EMSC   VANUATU                      

P: 14OCT2021 138059    15.0S  167.0E 4.0-5.4 AAAAA  Vanuatu Islands            

 

The most unusual earthquake of the day was an M 5.4 in southern Argentina and Chile in Santa Cruz, Argentina.  GUC reported this earthquake was felt with intensity IV in  Magallanes and Antartica, Chilena at Torres del Paine and III in Natales, Chile. NEIC reported this earthquake of M 5.4 in the southern Argentina-Chile border was felt with intensity II-III in the area(s) of the southern Argentina-Chile border at Rio Gallegos, Santa Cruz, Argentina.  This is the largest earthquake within about 300 km of this epicenter since an M 5.4-5.5 on July 30, 1992 near this same epicenter. That was the only earthquake of M>=5.4 in this area located in the past 30 years. This earthquake is located at the fifth node (72 degrees) from the M 7.2 in Guerrero, Mexico of September 8, 2021 and was probably promoted by energy from that source.

 

O: 13OCT2021 07:55:30  50.3S   72.1W Mw=5.4  EMSC   SANTA CRUZ, ARGENTINA        

O: 13OCT2021 07:55     50.3S   72.3W mb=5.4  GUC    Magallanes and Antartica, Chil

 

The strongest earthquake in the U.S. or Canada today was an M 4.2 south of Alaska near the Alaska Peninsula. An M 6.9 hit north of this epicenter two days ago on October 11, 2021 and today's event is probably a regional aftershock of that event. There have been two earthquakes of equal or greater magnitude within about 100 km of today's epicenter in the past year - an M 5.0 a month ago on September 16, 2021 and an M 5.5 on July 29, 2021 with the M 8.2 Alaska Peninsula quake of the same day. Forecast 138011 had expected this activity was likely within about 50 km around October 12.

 

O: 13OCT2021 11:34:18  55.1N  156.4W mb=4.2  EMSC   SOUTH OF ALASKA              

P: 12OCT2021 138011    54.7N  156.9W 3.5-5.9 AAAAA  Alaska Peninsula           

 

An unusual earthquake of M 5.3 hit the southwest Indian Ridge today. It was not reported felt in this remote area. The last earthquake within about 250 km of today's epicenter of M>=5.3 was an M 5.8 more than a year ago on August 18, 2020 and an M 5.4 on November 7, 2019. This epicenter is located near the antipode of Central California and some seismic enhancement is likely in that area\ in mid-October. This is normal with the most seismic periods in  Central California around April 15 and six months later near October 15. Forecast 138075 had expected today's earthquake in this area around October 15. This epicenter is at 101 degrees from the M 7.2 in Vanuatu of October 2, 2021 and was probably promoted by energy from that source. Similar events  near 103 degrees from the Vanuatu epicenter occurred today in Peru, Chile, Ecuador. 

 

O: 14OCT2021 03:47:04  36.3S   52.4E mb=5.3  EMSC   SOUTHWEST INDIAN RIDGE       

P: 15OCT2021 138075    34.0S   55.0E 4.0-5.8 ACBAA  So. Indian Ocean            

 

The eruption at Cumbre Viejo in La Palma, Canary Islands, Spain continued today at elevated levels. An M 4.4 in the region today was the strongest earthquake in the current eruption and before since an M 5.4 on December 27, 2013. Lava overflowed the cone of Cumbre Viejo today for the first time indicating a further strong eruption is likely.  Forecast 137880 had expected today's activity in the Canary Islands within  about 50 km around October 14.

 

O: 14OCT2021 01:27:58  28.6N   17.8W ML=4.1  EMSC   CANARY ISLANDS, SPAIN REGION

O: 13OCT2021 14:33:48  28.6N   17.8W ML=4.4  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary 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: 14OCT2021 00:04:19  33.8N   92.0E mb=4.3  EMSC   SOUTHERN QINGHAI, CHINA      

P:  9OCT2021 137688    33.0N   92.0E 3.8-5.2 BAAAA  Xizang                     

 

O: 13OCT2021 20:02:02  55.5N  161.7E mb=4.4  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 20OCT2021 138017    54.0N  162.0E 4.0-5.4 CBAAA  E. of Kamchatka            

 

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

 

INDONESIA AND PHILIPPINES

 

O: 13OCT2021 08:39:12   2.1N  126.5E ML=4.0  EMSC   MOLUCCA SEA                  

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 BAAAA  Mindanao, Philippines      

 

O: 13OCT2021 16:21:54   2.4N   97.7E ML=4.1  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 16OCT2021 137825     2.0N   97.0E 4.0-5.5 BAAAA  Nicobar Islands            

 

O: 13OCT2021 17:48:10   4.3N  123.3E mb=4.4  EMSC   CELEBES SEA                  

P: 20OCT2021 137824     4.0N  123.0E 4.0-5.5 CAAAA  Mindanao, Philippines      

 

O: 13OCT2021 09:54:28   4.3S  152.9E mb=4.9  EMSC   NEW BRITAIN REGION, P.N.G.   

P:  6OCT2021 137570     6.0S  151.0E 4.0-5.4 CBBAA  New Ireland                

 

O: 13OCT2021 10:51:46   7.2S  130.0E Mw=4.6  EMSC   KEP. TANIMBAR REGION, INDONESI

O: 13OCT2021 09:57:27   7.3S  129.5E mb=5.0  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 15OCT2021 137849     7.0S  130.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

CENTRAL AND SOUTH AMERICA

 

O: 13OCT2021 12:17:30   9.3N   84.2W ML=4.0  EMSC   COSTA RICA                   

P: 16OCT2021 137852    10.0N   84.0W 3.5-5.5 BAAAA  Caribbean Sea              

 

O: 13OCT2021 09:07:42   9.3S   78.8W mb=4.6  EMSC   NEAR COAST OF NORTHERN PERU  

P: 15OCT2021 138049    10.0S   75.0W 3.5-5.4 AACAA  Brazil                     

 

NEIC reported this earthquake of M 4.6 in northern Peru was felt with intensity IV-V in the area(s) of northern Peru at Chimbote and Trujillo.

 

O: 13OCT2021 14:21:43  13.7N   91.1W mb=4.8  EMSC   OFFSHORE GUATEMALA           

P: 15OCT2021 137857    15.0N   92.0W 3.5-5.1 ABAAA  Guatemala                  

 

O: 14OCT2021 03:22:00  16.2S   73.1W mb=4.5  EMSC   NEAR COAST OF SOUTHERN PERU  

P: 14OCT2021 138050    15.0S   73.0W 4.0-5.5 ABAAA  Central Peru               

 

NEIC reported this earthquake of M 4.5 in Southern Peru was felt with intensity II-III in the area(s) of Southern Peru at Moquegua and Arequipa.

 

O: 13OCT2021 20:48:18  16.6N   94.3W ML=4.0  EMSC   OAXACA, MEXICO               

P: 13OCT2021 137854    17.0N   94.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O: 13OCT2021 18:38:21  17.1N  100.4W ML=4.5  EMSC   GUERRERO, MEXICO

O: 14OCT2021 01:40:36  16.6N  100.0W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 14OCT2021 137871    17.0N  100.0W 3.5-5.5 AAAAA  Oaxaca, Mexico             

 

O: 14OCT2021 04:38:47  18.0N   67.0W Md=3.3  EMSC   PUERTO RICO REGION           

P: 16OCT2021 137873    19.0N   67.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 14OCT2021 03:12:56  18.4N   68.2W Ml=4.5  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P: 12OCT2021 137872    18.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

NEIC reported this earthquake of M 4.5 in the Dominican Republic was felt with intensity IV-V in the area(s) of the Dominican Republic at Higuey and La Romana and IV in Mayaguyez, Puerto Rico.

 

O: 13OCT2021 18:35:33  18.5N   73.6W ML=3.1  EMSC   HAITI REGION                 

O: 13OCT2021 08:30:08  18.3N   73.5W ML=3.4  EMSC   HAITI REGION

O: 13OCT2021 21:50:05  18.4N   73.6W ML=3.4  EMSC   HAITI REGION

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 AAAAA  Haiti                      

 

O: 13OCT2021 12:06:13  19.9S   69.2W mb=4.1  EMSC   TARAPACA, CHILE              

P: 14OCT2021 138066    20.0S   70.0W 4.0-5.9 AAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 3.9 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile in Iquique, Tarapaca.

 

O: 13OCT2021 22:00:34  24.6S   67.9W mb=4.4  EMSC   SALTA, ARGENTINA             

P:  9OCT2021 137783    24.0S   67.0W 4.0-5.4 BAAAA  Argentina                  

 

O: 13OCT2021 07:55:30  50.3S   72.1W Mw=5.4  EMSC   SANTA CRUZ, ARGENTINA        

 

AFRICA AND EUROPE

 

O: 14OCT2021 01:27:58  28.6N   17.8W ML=4.1  EMSC   CANARY ISLANDS, SPAIN REGION

O: 13OCT2021 14:33:48  28.6N   17.8W ML=4.4  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary Islands             

 

O: 13OCT2021 18:22:52  36.0N   21.6E ML=4.1  EMSC   CENTRAL MEDITERRANEAN SEA    

P: 17OCT2021 137916    37.0N   20.0E 3.0-4.5 BAAAA  No. Greece                 

 

SOUTHWEST PACIFIC

 

O: 14OCT2021 06:22:00  24.3S  179.6W mb=4.6  EMSC   SOUTH OF FIJI ISLANDS        

P:  9OCT2021 137792    25.0S  177.0W 4.0-5.6 BABAA  Tonga Islands               

 

O: 14OCT2021 05:51:56  15.0S  167.5E Mw=5.6  EMSC   VANUATU

O: 13OCT2021 22:05:03  15.8S  167.9E mb=4.4  EMSC   VANUATU

O: 13OCT2021 22:25:57  14.2S  167.4E mb=4.5  EMSC   VANUATU                      

P: 14OCT2021 138059    15.0S  167.0E 4.0-5.4 AAAAA  Vanuatu Islands            

 

OCEAN RIDGES

 

O: 13OCT2021 09:49:09  58.6S   25.2W mb=4.9  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 12OCT2021 138085    58.0S   26.0W 4.0-5.6 AAAAA  So. Sandwich Islands       

 

O: 13OCT2021 17:34:24  62.9S  161.2W mb=4.6  EMSC   PACIFIC-ANTARCTIC RIDGE      

 

O: 14OCT2021 03:47:04  36.3S   52.4E mb=5.3  EMSC   SOUTHWEST INDIAN RIDGE       

P: 15OCT2021 138075    34.0S   55.0E 4.0-5.8 ACBAA  So. Indian Ocean           

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

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

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

O: 13OCT2021 17:01:30  32.4N  133.3E ML=4.1  EMSC   SHIKOKU, JAPAN               

P: 15OCT2021 137904    34.0N  137.0E 3.5-5.1 ABCAA  Central/So. Honshu Japan   

 

O: 13OCT2021 11:22:47  44.1N  146.6E mb=4.3  EMSC   KURIL ISLANDS                

P: 15OCT2021 138002    45.0N  147.0E 3.5-5.8 AAAAA  So. Kurils                 

 

O: 13OCT2021 19:30:30  37.7N  141.6E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 18OCT2021 137927    37.0N  141.0E 4.0-5.4 BAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 14OCT2021 01:27:00  35.6N  117.5W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 13OCT2021 137946    35.8N  117.6W 2.5-4.8 AAAAA  So. California             

 

O: 13OCT2021 16:32:33  38.1N  118.9W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P: 13OCT2021 137896    37.5N  118.6W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 13OCT2021 18:21:56  38.1N  119.0W Md=2.2  EMSC   CENTRAL CALIFORNIA           

O: 13OCT2021 23:23:18  38.6N  119.5W Md=2.4  EMSC   CENTRAL CALIFORNIA           

P: 16OCT2021 137897    38.8N  119.6W 2.5-4.4 BAAAA  California/Nevada area     

 

O: 13OCT2021 21:41:33  38.8N  122.8W Md=2.6  EMSC   NORTHERN CALIFORNIA

O: 13OCT2021 09:27:25  38.8N  122.8W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 14OCT2021 137901    38.5N  122.7W 2.5-4.6 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in the Geysers, California was felt with intensity II-III in the area(s) of the Geysers, California at Forestville.

 

O: 13OCT2021 16:17:16  39.5N  123.0W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P: 17OCT2021 137902    39.3N  123.2W 2.5-4.8 BAAAA  Central California         

 

ALASKA

 

O: 13OCT2021 21:27:20  52.1N  169.2W ml=3.3  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 14OCT2021 138018    51.9N  169.2W 3.5-4.9 AAAAA  Fox Islands, Aleutians     

 

O: 13OCT2021 11:34:18  55.1N  156.4W mb=4.2  EMSC   SOUTH OF ALASKA              

P: 12OCT2021 138011    54.7N  156.9W 3.5-5.9 AAAAA  Alaska Peninsula           

 

O: 14OCT2021 01:13:36  59.1N  154.0W ml=3.0  EMSC   SOUTHERN ALASKA              

P: 15OCT2021 138031    60.0N  153.5W 3.2-5.4 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.3 in Southern Alaska was felt with intensity II-III in the area(s) of Southern Alaska at Homer and Kasilof.

 

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: 13OCT2021 09:47:41  31.7N  104.5W ML=2.1  EMSC   WESTERN TEXAS                

P:  4OCT2021 137664    31.2N  104.1W 2.0-4.0 CAAAA  SW U.S.A                   

 

O: 13OCT2021 18:02:47  39.4N  110.3W MD=2.0  EMSC   UTAH                         

P: 17OCT2021 137963    39.7N  110.8W 2.0-3.9 BAAAA  Utah area                  

 

EASTERN U.S./CANADA

 

O: 10OCT2021 02:46:33  49.2N   67.7W MB=1.7  ECAN Godbout, QC                    

P:  7OCT2021 137693    49.0N   66.0W 2.0-4.1 BAAAA  E. of Maine                

 

O:  9OCT2021 13:28:32  74.4N   69.0W MB=3.5  ECAN Savissivik, nan                

P: 19OCT2021 138046    73.3N   73.5W 2.5-4.1 CBBAA  Baffin/Davis Strait Canada 

 

O:  9OCT2021 08:23:09  49.1N   66.5W MB=2.7  ECAN Sainte-Anne-des-Monts, QC      

P:  7OCT2021 137693    49.0N   66.0W 2.0-4.1 AAAAA  E. of Maine                

 

HAWAII

 

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

 

 

 

 

STRONGEST GEOMAGNETIC STORM IN TWO YEARS BRINGS STRONG QUAKE IN CRETE

 

EARTHQUAKE SUMMARY FOR OCTOBER 12, 2021

 

The strongest geomagnetic storm in more than three years occurred today. Bright, mostly green aurora were seen throughout most of North America and Asia with this storm. The height of the storm occurred between 09:00 and 10:00 UT. At the same time an M 6.5 occurred in the sub-solar region of Crete, Greece and the Dodecanese Islands. This summary had noted this geomagnetic storm as:

 

"The geomagnetic field saw major storm  conditions today. The AP level was 45.  High latitude geomagnetic field  saw stormy conditions with AP 60. This is the strongest geomagnetic storm since AP reached 45 on September 1, 2019. The last of greater disturbance occurred  on August 26, 2018 when AP reached 76 and high latitude AP reached 90. Enhanced seismicity is likely at higher latitudes and near the geomagnetic equator with this storm in the next several days." (October 12, 2021)

 

A strong aftershock of M 6.4 also hit eastern Crete, Greece today. This event was reported with maximum intensity VII in Crete at Sitia; IV in Ierapetra, Iraklion, and II-III in Nea Alikarnassos and Khanion, Greece. Many buildings were damaged including a chapel which collapsed. People fled from their homes during the quake but there were no immediate reports of casualties. After a lull in the geomagnetic storm, it resumed about 07:00 UT on October 12, 2021 with high latitude AP 7 at about 09:00. It is likely that this helped promote the earthquake in Crete at this same time. A strong M 6.0 hit Crete about 200 km west of today's epicenter occurred on September 27, 2021, an earthquake which killed one and did considerable damage, and this may be a regional aftershock of that event. The last earthquake of larger magnitude in Crete occurred on May 2, 2020 with M 6.6, the strongest in the region in the past 30 years. A similar M 6.6 about 200 km northeast of this occurred on July 20, 2017. The only event of M>=6.4 within about 100 km of today's event in the past 30 years was an M 6.4 on July 1, 2009. Today's earthquake in Crete occurred within about an hour of local solar noon and was probably promoted by high tidal stresses which maximize near this hour. Forecasts 137629,m 137893 and 137906 had expected today's event in the region of Crete was likely around October 9-13. This epicenter is at 148 degrees from the M 7.2 in Vanuatu of October 2, 2021 and at 103 degrees from the M 8.1 of August 12. 2021 in the South Sandwich Islands and may have been promoted by energy from those sources.

 

 

O: 12OCT2021 09:24:04  35.0N   26.3E Mw=6.4  EMSC   CRETE, GREECE                

O: 12OCT2021 09:36:28  35.1N   26.3E ML=4.1  EMSC   CRETE, GREECE

O: 12OCT2021 09:32:42  35.6N   27.2E ML=4.5  EMSC   DODECANESE ISLANDS, GREECE

P:  6OCT2021 137646    35.0N   26.0E 3.0-4.8 CAAAA  Crete                      

P: 12OCT2021 137893    35.0N   25.0E 3.0-4.6 AAAAA  Aegean Sea                 

P:  9OCT2021 137629    37.0N   27.0E 3.0-4.8 BBAAA  Aegean Sea                 

 

The strongest earthquake in the U.S. or Canada today was an M 4.1 off the west coast of Vancouver, British Columbia, Canada. NEIC reported this earthquake of M 4.1 off western Vancouver, Canada  was felt with intensity II-III in the area(s) of British Columbia in Port Alberni and VI in Courtenay. An M 4.3 about 50 km southwest of this occurred on September 21, 2021. These may be aftershocks of an event of M 5.4 on July 22, 2020. Forecast 138005 had expected today's event in the area was likely around October 13.

 

O: 12OCT2021 14:56:19  49.2N  128.1W mb=4.1  EMSC   VANCOUVER ISLAND, CANADA REGIO

P: 13OCT2021 138005    48.7N  129.0W 2.8-5.1 AAAAA  Vancouver Island area      

 

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: 13OCT2021 06:02:41  41.9N   83.8E mb=4.4  EMSC   SOUTHERN XINJIANG, CHINA

O: 12OCT2021 10:48:37  41.1N   83.4E mb=4.2  EMSC   SOUTHERN XINJIANG, CHINA     

P: 15OCT2021 137978    41.0N   82.0E 4.0-5.6 BAAAA  Kirgizstan/Xinjiang        

 

O: 12OCT2021 14:12:28  51.8N  157.0E mb=4.5  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 18OCT2021 138019    51.0N  157.0E 4.0-5.8 CAAAA  Kamchatka                  

 

INDONESIA AND PHILIPPINES

 

O: 13OCT2021 03:28:46   0.2S  133.0E ML=4.8  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 13OCT2021 137846     2.0S  135.0E 4.0-5.5 ABBAA  West Irian, PNG            

 

O: 13OCT2021 06:25:39   4.1S  152.9E Mw=5.6  EMSC   NEW BRITAIN REGION, P.N.G.   

O: 12OCT2021 18:44:06   5.8S  149.1E mb=4.9  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 15OCT2021 137836     6.0S  150.0E 4.0-5.6 AAAAA  New Ireland                

 

NEIC reported this earthquake of M 5.0 in New Britain was felt with intensity II-III in the area(s) of New Britain at Kokopo.

 

O: 12OCT2021 18:33:29   5.9N  126.4E ML=4.2  EMSC   MINDANAO, PHILIPPINES        

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 CCAAA  Mindanao, Philippines      

 

O: 12OCT2021 15:25:17   7.3S  120.3E mb=4.1  EMSC   FLORES SEA                   

P: 12OCT2021 137832     8.0S  121.0E 4.0-5.4 AAAAA  Flores Island area         

 

O: 13OCT2021 05:00:43   9.0S  111.0E mb=4.9  EMSC   SOUTH OF JAVA, INDONESIA     

P: 16OCT2021 137840     9.0S  111.0E 4.0-5.4 BAAAA  So. of Java                

 

NEIC reported this earthquake of M 4.9 in Java, Indonesia was felt with intensity II-III in the area(s) of Java, Indonesia with IV at Pundong, and Surakarta and in Gondang, Prambatan, Yogyakarta, Jaten, Bitar, Kencong, Java.

 

O: 12OCT2021 20:25:49   9.6S  118.5E ML=4.3  EMSC   SUMBAWA REGION, INDONESIA    

P:  9OCT2021 137777    11.0S  118.0E 4.0-5.4 BBAAA  So. of Indonesia           

 

O: 12OCT2021 15:16:11   9.9N  124.1E ML=4.2  EMSC   BOHOL, PHILIPPINES           

P: 12OCT2021 137860    10.0N  125.0E 3.5-5.0 AAAAA  Luzon, Philippines         

 

 

CENTRAL AND SOUTH AMERICA

 

O: 12OCT2021 15:46:58   7.4N   80.6W ML=4.1  EMSC   PANAMA                       

P: 13OCT2021 137821     8.0N   82.0W 3.5-5.1 AABAA  Costa Rica                 

 

O: 13OCT2021 03:07:30   9.6N   84.8W ML=4.0  EMSC   COSTA RICA

O: 13OCT2021 02:54:26   9.6N   84.7W mb=4.7  EMSC   COSTA RICA                   

P: 16OCT2021 137852    10.0N   84.0W 3.5-5.5 BAAAA  Caribbean Sea              

 

NEIC reported this earthquake of M 4.7 in Costa Rica was felt with intensity II-III in the area(s) of Costa Rica at Jaco, Paquera, Quepos, Puntareans; in San Jose at Santiago, Santa Ana, Escazu, and in Alajuela at Atenas, Grecia, and Alajuela.

 

O: 12OCT2021 09:22:05  14.4N   92.2W ML=4.3  EMSC   OFFSHORE GUATEMALA           

P: 14OCT2021 137854    14.0N   92.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 12OCT2021 15:25:59  15.9N   98.1W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO      

P: 12OCT2021 137871    17.0N   99.0W 3.5-5.5 ABAAA  Oaxaca, Mexico             

 

O: 13OCT2021 01:01:31  15.4N   96.7W ML=4.3  EMSC   OFFSHORE OAXACA, MEXICO

O: 12OCT2021 23:39:48  15.8N   95.8W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O: 12OCT2021 12:31:22  16.0N   95.2W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13OCT2021 137854    17.0N   94.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O: 13OCT2021 05:12:05  16.2N   97.6W ML=4.1  EMSC   OAXACA, MEXICO               

P: 19OCT2021 137870    16.0N   98.0W 3.5-5.4 CAAAA  Oaxaca, Mexico             

 

 

O: 13OCT2021 05:56:03  16.8N   99.8W ML=4.0  EMSC   GUERRERO, MEXICO

O: 12OCT2021 18:28:48  16.5N   99.5W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 14OCT2021 137871    17.0N  100.0W 3.5-5.5 AAAAA  Oaxaca, Mexico             

 

O: 12OCT2021 13:30:20  18.3N   74.0W ML=3.4  EMSC   HAITI REGION                 

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 AAAAA  Haiti                      

 

O: 13OCT2021 02:22:46  19.3N   65.7W Md=3.5  EMSC   PUERTO RICO REGION

O: 13OCT2021 02:44:16  19.2N   66.1W Md=3.3  EMSC   PUERTO RICO REGION           

P: 16OCT2021 137873    19.0N   67.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 12OCT2021 09:03:59  20.0N   70.3W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION     

P:  9OCT2021 137613    20.0N   69.0W 3.0-4.5 BAAAA  Bahamas/No. Caribbean      

 

O: 12OCT2021 18:01:52  29.4S   71.9W ML=4.0  EMSC   OFFSHORE COQUIMBO, CHILE     

P:  8OCT2021 137799    30.0S   70.0W 4.0-5.4 BABAA  Coast Central Chile        

P: 14OCT2021 138061    29.0S   70.0W 4.0-5.6 AABAA  Coast Central Chile        

 

 

AFRICA AND EUROPE

 

O: 12OCT2021 07:25:03  28.6N   17.8W ML=3.8  EMSC   CANARY ISLANDS, SPAIN REGION

O: 12OCT2021 15:52:19  28.7N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION

O: 12OCT2021 07:16:49  28.6N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 AAAAA  Canary Islands             

 

O: 12OCT2021 09:24:04  35.0N   26.3E Mw=6.4  EMSC   CRETE, GREECE                

O: 12OCT2021 09:36:28  35.1N   26.3E ML=4.1  EMSC   CRETE, GREECE

O: 12OCT2021 09:32:42  35.6N   27.2E ML=4.5  EMSC   DODECANESE ISLANDS, GREECE

P:  6OCT2021 137646    35.0N   26.0E 3.0-4.8 CAAAA  Crete                      

P: 12OCT2021 137893    35.0N   25.0E 3.0-4.6 AAAAA  Aegean Sea                 

 

O: 12OCT2021 23:48:38  63.8N   22.9W ML=3.2  EMSC   ICELAND REGION               

P: 18OCT2021 138038    62.0N   23.0W 3.0-4.6 CBAAA  Iceland area               

 

O: 12OCT2021 09:36:28  35.1N   26.3E ML=4.1  EMSC   CRETE, GREECE

O: 12OCT2021 09:32:42  35.6N   27.2E ML=4.5  EMSC   DODECANESE ISLANDS, GREECE

 

O: 12OCT2021 23:00:20  63.8N   22.9W ML=3.2  EMSC   ICELAND REGION

 

SOUTHWEST PACIFIC

 

O: 13OCT2021 03:31:22  16.9S  174.3W mb=4.3  EMSC   TONGA                         

P: 16OCT2021 138057    19.0S  174.0W 4.0-5.4 BBAAA  Tonga Islands              

 

O: 12OCT2021 17:47:04  24.3S  180.0W mb=4.5  EMSC   SOUTH OF FIJI ISLANDS        

P:  7OCT2021 137792    25.0S  180.0W 4.0-5.4 BAAAA  Tonga Islands               

 

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

 

OCEAN RIDGES

 

O: 12OCT2021 13:38:32  59.8S   26.1W mb=4.8  EMSC   SOUTH SANDWICH ISLANDS REGION

O: 13OCT2021 05:24:46  58.8S   25.2W mb=4.8  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 12OCT2021 138085    58.0S   26.0W 4.0-5.6 AAAAA  So. Sandwich Islands       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

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

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

O: 12OCT2021 11:30:30  39.6N  142.5E ML=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  8OCT2021 137661    38.0N  141.0E 4.0-5.4 BBAAA  Off East Coast Honshu      

 

O: 13OCT2021 04:58:34  30.7N  138.6E mb=4.1  EMSC   IZU ISLANDS, JAPAN REGION    

P: 17OCT2021 137904    30.0N  139.0E 3.5-5.1 BAAAA  Central/So. Honshu Japan   

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

O: 12OCT2021 19:46:00  30.7N  114.3W ML=3.5  EMSC   GULF OF CALIFORNIA           

P: 15OCT2021 137930    31.0N  114.3W 2.5-4.7 BAAAA  So. California             

 

O: 12OCT2021 19:50:14  33.8N  119.4W ML=3.1  EMSC   CHANNEL ISLANDS REG., CALIFORN

O: 12OCT2021 19:50:14  33.8N  119.4W ML=3.3  ANSS   CHANNEL ISLANDS REG., CALIFORN

P: 13OCT2021 137943    34.9N  119.0W 2.5-4.7 ABAAA  So. California             

P: 18OCT2021 137937    33.8N  119.7W 2.5-4.6 CAAAA  So. California             

 

NEIC reported this earthquake of M 3.3 in Santa Cruz Island, California was felt with intensity II-III in the area(s) of Santa Cruz Island, California in Port Hueneme, Oxnard, Newbury, Simi Valley, Ojai, Santa Monica and Sherman Oaks.

 

O: 12OCT2021 11:26:48  35.8N  117.6W Ml=2.3  EMSC   CENTRAL CALIFORNIA           

P: 13OCT2021 137946    35.8N  117.6W 2.5-4.8 AAAAA  So. California             

 

O: 13OCT2021 06:36:51  37.6N  118.8W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P: 13OCT2021 137896    37.5N  118.6W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 12OCT2021 17:20:52  38.1N  122.2W Md=2.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 13OCT2021 137900    37.7N  121.9W 2.5-4.8 AAAAA  Central California         

 

O: 12OCT2021 16:43:23  38.2N  117.9W ml=2.1  EMSC   NEVADA

O: 12OCT2021 16:53:58  38.2N  117.8W ML=2.8  EMSC   NEVADA

O: 12OCT2021 08:28:37  38.2N  117.9W ML=3.5  EMSC   NEVADA                       

P: 13OCT2021 137972    40.0N  117.9W 2.5-4.9 ABAAA  California/Nevada area     

 

O: 12OCT2021 21:30:51  38.8N  122.9W Md=2.0  EMSC   NORTHERN CALIFORNIA          

O: 12OCT2021 11:14:41  39.1N  123.1W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 14OCT2021 137901    38.5N  122.7W 2.5-4.6 AAAAA  Central California         

 

O: 12OCT2021 11:29:01  40.3N  124.7W ML=3.2  EMSC   OFFSHORE NORTHERN CALIFORNIA 

O: 12OCT2021 11:29:01  40.3N  124.7W ML=3.8  ANSS   OFFSHORE NORTHERN CALIFORNIA 

P: 13OCT2021 137993    40.7N  124.6W 2.5-4.4 AAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.8 off the coast of Northern California   was felt with intensity II-III in the area(s) of  Northern California at Petrolia, Ferndale, Fortuna, Hydesville, Whitethorn and Arcata.

 

 

MAJOR AFTERSHOCK SHAKES ALASKA PENINSULA

 

EARTHQUAKE SUMMARY FOR OCTOBER 11, 2021

 

A major aftershock of M 6.9 shook the Alaska Peninsula today. NEIC reported maximum intensity VI in Chignik Lagoon, Alaska and V in Chignik with IV in Port Heiden, South Naknek, King Salmon, Sand Point, Manokotak, and II-III in Kodia, Naknek, and King Cove. This event occurred at the height of the current geomagnetic storm near local solar midnight and was probably promoted by geomagnetic effects from this storm as noted in this and previous issues of this summary:

 

"The geomagnetic field saw quiet  conditions today. The AP level was 13.  High latitude geomagnetic field  saw stormy conditions with AP 23. Enhanced seismicity is likely at higher latitudes and near the geomagnetic equator with this disturbance in the next several days." (October 10-11, 2021)

 

Today's earthquake occurred at 156 West longitude. This is the same longitude as the M 6.2 earthquake yesterday in Hawaii. The note in the previous issue of this summary expected this event could follow at this time as:

 

 

"While the Alaska Peninsula remained quiet today with only an M 3.2 reported in the area, the area is at the same longitude (156 West) as Hawaii and as noted above in the tidal forecast could see enhanced seismicity and the possibility of a strong earthquake in the next several days. A strong geomagnetic storm at high latitudes would reinforce this possibility." (October 10-11, 2021)

 

The forecast for this new moon as reported in  previous issues of this summary had read:

 

"The New moon arrived at 11:05 UT on October 6. Longitudes which were at local solar noon at this time are near 15 East while those at local solar midnight are near 165 West longitude. In the west these include most areas of Europe and Africa and in the east the central Aleutians and the Alaska Peninsula, Hawaii and the Tonga-Fiji-Kermadec arc. These area are the most likely to see a strong tidally triggered earthquake in the next week. Other areas may also see tidal triggering. These are most likely to occur near local solar midnight and local solar noon. The possibility of a strong to major earthquake is considered moderate to strong before October 10." (October 4-10, 2021)

 

As discussed in the previous issue the quake in Alaska was probably  promoted by tidal stresses. Not only did it occur near local solar midnight but also at the longitude of maximum tidal stress with that event. The previous issue noted this in regard to Hawaii as:

 

"Readers should note that Hawaii is located near the longitude of maximum tidal stress with this new moon. The mainshock also occurred as a strong geomagnetic storm was reaching maximum intensity" (October 10-11, 2021)

 

While today's event is about 150 km northeast of the M 8.2 of July 29 and the M 7.0 of August 14, 2021 it is likely a regional aftershock caused by stress redistribution in the area. Forecast 138011 had expected today's activity about 150 km south of this around October 12. This epicenter is at the fifth node from Haiti where an M 7.2 occurred on August 14, 2021 and was probably promoted by strong energy from that source.

 

O: 11OCT2021 13:59:30  56.3N  156.6W mb=4.4  EMSC   ALASKA PENINSULA

O: 11OCT2021 17:56:23  56.3N  156.5W mb=4.3  EMSC   ALASKA PENINSULA

O: 11OCT2021 19:35:56  56.3N  156.5W ML=3.3  EMSC   ALASKA PENINSULA

O: 11OCT2021 19:40:24  56.3N  156.6W mb=4.9  EMSC   ALASKA PENINSULA

O: 12OCT2021 00:54:11  56.3N  156.6W ML=3.4  EMSC   ALASKA PENINSULA

O: 12OCT2021 04:41:22  56.3N  156.7W ml=3.5  EMSC   ALASKA PENINSULA

O: 11OCT2021 09:10:24  56.4N  156.7W Mw=6.9  EMSC   ALASKA PENINSULA

O: 11OCT2021 09:30:52  56.4N  156.5W ml=3.2  EMSC   ALASKA PENINSULA

O: 11OCT2021 09:26:20  56.3N  156.6W ML=3.9  EMSC   ALASKA PENINSULA             

P: 12OCT2021 138011    54.7N  156.9W 3.5-5.9 ABAAA  Alaska Peninsula           

 

A strong aftershock of M 6.4 also hit eastern Crete, Greece today. This event was reported with maximum intensity VII in Crete at Sitia; IV in Ierapetra, Iraklion, and II-III in Nea Alikarnassos and Khanion, Greece. Many buildings were damaged including a chapel which collapsed. People fled from their homes during the quake but there were no immediate reports of casualties. After a lull in the geomagnetic storm, it resumed about 08:00 UT on October 12, 2021 with high latitude AP 6 at about 08:00. It is likely that this helped promote the earthquake in Crete at this same time. A strong M 6.0 hit Crete about 200 km west of today's epicenter on September 27, 2021, an earthquake which killed one and did considerable damage, and this may be a regional aftershock of that event. The last earthquake of larger magnitude in Crete occurred on May 2, 2020 with M 6.6, the strongest in the region  in the past 30 years. A similar M 6.6 about 200 km northeast of this occurred on July 20, 2017. The only event of M>=6.4 within about 100 km of today's event in the past 30 years was an M 6.4 on July 1, 2009. Today's earthquake in Crete occurred within about an hour of local solar noon and was probably promoted by high tidal stresses which maximize near this hour. Forecasts 137629,m 137893 and 137906 had expected today’s event in the region of Crete was likely around October 9-13.

 

O: 12OCT2021 09:24:03  35.2N   26.3E mw=6.4  ANSS   SSE of Palekastro Greece     

P:  9OCT2021 137629    37.0N   27.0E 3.0-4.8 BBAAA  Aegean Sea                 

P: 12OCT2021 137893    35.0N   25.0E 3.0-4.6 AAAAA  Aegean Sea                 

P: 13OCT2021 137906    34.0N   27.0E 3.0-5.6 ABAAA  Crete                      

 

A moderately strong M 5.6-5.7 quake shook regions of the Molucca Sea today. NEIC reported it was felt with intensity II-III in Indonesia at Ternate, Bitung, Manado, Ambon, Palu, Sulawesi and Polewali Sulawesi. Forecast 137824 had expected today's seismic enhancement in this area was likely in mid-October. NEIC reported an aftershock of M 5.1 in Molucca, Indonesia was felt with intensity II-III in the area(s) of Molucca, Indonesia at Manado, Sulawesi.

 

O: 11OCT2021 17:30:31   0.8N  126.1E mb=5.0  EMSC   MOLUCCA SEA

O: 11OCT2021 15:27:52   0.9N  126.1E mb=5.1  EMSC   MOLUCCA SEA

O: 11OCT2021 12:34:36   0.8N  126.2E Mw=5.6  EMSC   MOLUCCA SEA                  

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 CCAAA  Mindanao, Philippines      

 

 

The antipode of Sumatra, where a large earthquake occurred yesterday, was active today. An M 5.0 was widely felt in Colombia at Floridablanca, Bucaramanga, San Gil, Santander, Paip;a, Guatape, Bogota, Ejido, Retiro, Itagui, Antioquia and Cartagena. Forecast 137820 had expected this earthquake in mid-OCtober within about 25 km.

 

O: 12OCT2021 04:51:46   6.8N   73.0W mb=5.0  EMSC   NORTHERN COLOMBIA            

P: 18OCT2021 137820     7.0N   73.0W 4.0-5.5 CAAAA  Colombia                   

 

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: 11OCT2021 16:24:37  17.4N   77.3E ML=4.1  EMSC   RNATAKA-ANDHRA PRADESH, INDIA

 

O: 12OCT2021 00:31:57  30.4N   94.8E mb=4.5  EMSC   EASTERN XIZANG               

P: 15OCT2021 137947    30.0N   94.0E 3.5-5.1 BAAAA  So. China                  

 

O: 11OCT2021 15:40:09  40.2N   75.9E mb=4.2  EMSC   SOUTHERN XINJIANG, CHINA     

P:  9OCT2021 137697    40.0N   75.0E 4.0-5.6 AAAAA  Kirgizstan/Xinjiang        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 11OCT2021 17:30:31   0.8N  126.1E mb=5.0  EMSC   MOLUCCA SEA

O: 11OCT2021 15:27:52   0.9N  126.1E mb=5.1  EMSC   MOLUCCA SEA

O: 11OCT2021 12:34:36   0.8N  126.2E Mw=5.6  EMSC   MOLUCCA SEA                  

P: 18OCT2021 137824     3.0N  126.0E 4.0-5.4 CCAAA  Mindanao, Philippines      

 

O: 11OCT2021 19:17:02   1.1S   97.4E ML=4.1  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P:  7OCT2021 137559     1.0N   97.0E 4.0-5.5 BCAAA  Nicobar Islands            

 

O: 11OCT2021 22:17:47   3.2S  102.2E ML=4.5  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 15OCT2021 137842     6.0S  102.0E 4.0-5.4 BCAAA  So. of Sumatera            

 

O: 11OCT2021 23:30:22   6.1N  126.9E mb=5.0  EMSC   MINDANAO, PHILIPPINES        

P:  6OCT2021 137556     5.0N  128.0E 4.0-5.4 BBAAA  Halmahera                  

 

NEIC reported this earthquake of M 5.0 in Mindanao, Philippines was felt with intensity II-III in the area(s) of Mindanao, Philippines in Mati.

 

O: 11OCT2021 07:45:10   7.1S  156.1E mb=4.5  EMSC   SOLOMON ISLANDS              

P:  6OCT2021 137579     6.0S  155.0E 4.0-5.5 BBAAA  Solomon Islands            

 

CENTRAL AND SOUTH AMERICA

 

O: 11OCT2021 15:13     27.3S   70.6W mb=4.2  GUC    Atacama at Copiapo, Diego de A

P:  2OCT2021 137784    29.0S   71.0W 4.0-5.6 CBAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity III in  Atacama at Copiapo, Diego de Almagro and Tierra Amarilla, Chile.

 

O: 12OCT2021 00:33:41   0.4N   80.6W ML=4.4  EMSC   NEAR COAST OF ECUADOR        

P:  7OCT2021 137565     2.0S   80.0W 4.0-5.6 BCAAA  Ecuador                    

 

O: 12OCT2021 04:51:46   6.8N   73.0W mb=5.0  EMSC   NORTHERN COLOMBIA             

P: 18OCT2021 137820     7.0N   73.0W 4.0-5.5 CAAAA  Colombia                   

 

O: 11OCT2021 08:30:08   6.0N   73.3W mb=4.1  EMSC   COLOMBIA                     

P:  2OCT2021 137553     7.0N   73.0W 4.0-5.5 CAAAA  Colombia                   

 

O: 12OCT2021 04:34:35   9.6S   71.3W mb=4.2  EMSC   PERU-BRAZIL BORDER REGION    

P: 12OCT2021 137828    11.0S   74.0W 3.5-5.5 ABBAA  Brazil                     

 

O: 11OCT2021 07:38:58  11.2N   86.9W mb=4.0  EMSC   NEAR COAST OF NICARAGUA      

P: 10OCT2021 137602    12.0N   87.0W 3.5-5.5 AAAAA  Nicaragua                  

 

O: 12OCT2021 00:48:50  14.8N   92.4W mb=4.1  EMSC   CHIAPAS, MEXICO              

P: 14OCT2021 137854    14.0N   92.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

NEIC reported this earthquake of M 4.1 in Chiapas, Mexico was felt with intensity II-III in the area(s) of Chiapas, Mexico at San Marcos la Laguna Solola, Guatemala.

 

O: 11OCT2021 07:47:55  15.7S   71.9W ML=4.1  EMSC   SOUTHERN PERU

O: 12OCT2021 04:00:04  15.6S   72.2W mb=4.9  EMSC   SOUTHERN PERU                

P: 12OCT2021 138056    16.0S   72.0W 4.0-5.6 AAAAA  So. Peru/Bolivia           

 

O: 11OCT2021 15:13:31  27.3S   70.6W mb=4.3  EMSC   ATACAMA, CHILE               

P: 14OCT2021 138061    29.0S   70.0W 4.0-5.6 BBAAA  Coast Central Chile        

 

NEIC reported this earthquake of M 4.2 in Atacama, Chile was felt with intensity II-III in the area(s) of Atacama, Chile at Copiapo.

 

O: 11OCT2021 23:30:05  18.1N   68.4W Md=3.8  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P: 12OCT2021 137872    18.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 11OCT2021 08:04:31  18.4N   74.0W ML=3.0  EMSC   HAITI REGION                 

P:  7OCT2021 137609    20.0N   74.0W 3.4-4.9 BBAAA  Puerto Rico                

P: 14OCT2021 137874    19.0N   74.0W 3.4-4.9 BAAAA  Haiti                      

 

 

AFRICA AND EUROPE

 

O: 12OCT2021 01:31:35  28.6N   17.8W ML=4.1  EMSC   CANARY ISLANDS, SPAIN REGION

O: 11OCT2021 12:20:53  28.6N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14OCT2021 137880    28.0N   18.0W 4.0-5.5 BAAAA  Canary Islands             

 

O: 11OCT2021 12:50:37  34.1N   25.9E mb=4.2  EMSC   CRETE, GREECE                

P:  8OCT2021 137628    35.0N   24.0E 3.0-4.6 BABAA  Aegean Sea                 

P: 12OCT2021 137893    35.0N   25.0E 3.0-4.6 AAAAA  Aegean Sea                 

 

O: 11OCT2021 09:26:45  63.9N   22.2W ML=3.7  EMSC   ICELAND REGION               

P: 18OCT2021 138038    62.0N   23.0W 3.0-4.6 CAAAA  Iceland area               

 

SOUTHWEST PACIFIC

 

O: 12OCT2021 03:59:51  20.0S  169.2E mb=4.5  EMSC   VANUATU                      

P:  9OCT2021 137781    19.0S  170.0E 4.0-5.7 BAAAA  Vanuatu Islands            

 

O: 12OCT2021 06:04:10  21.3S  174.5E Mw=5.4  EMSC   VANUATU REGION               

P: 13OCT2021 138069    21.0S  174.0E 4.0-5.6 AAAAA  Tonga/Fiji                 

 

O: 11OCT2021 16:35:47   7.5S  128.2E mb=4.4  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 13OCT2021 137827     8.0S  128.0E 4.0-5.6 AAAAA  Banda Sea                  

 

O: 11OCT2021 16:49:19  16.9S  174.4W mb=4.3  EMSC   TONGA                        

P:  5OCT2021 137779    16.0S  174.0W 4.0-5.6 CAAAA  Tonga Islands              

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 11OCT2021 23:48:20  33.7S  179.1E mb=4.3  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  4OCT2021 137803    32.0S  179.0E 4.0-5.5 CBAAA  So. Kermadec Islands       

 

O: 12OCT2021 01:55:00  40.2S  173.5E mb=4.8  EMSC   COOK STRAIT, NEW ZEALAND     

O: 12OCT2021 01:55:02  40.3S  173.5E ML=5.3  GEONET Felt with moderate intensity

P:  5OCT2021 137805    40.0S  174.0E 3.0-4.5 CAAAA  North Island, N.Z.         

P:  8OCT2021 137807    42.0S  173.0E 3.0-4.9 BBAAA  So. Island, N.Z.           

P: 12OCT2021 138080    41.0S  174.0E 3.0-4.9 AAAAA  So. Island, N.Z.           

 

 

NEIC reported this earthquake of M  4.8 in Cook Strait, New Zealand was felt with intensity II-III in the area(s) of Cook Strait, New Zealand at Opunake (V) and Wanganui, with lesser shaking in Motueka, Stratford, Nelson, Picton, Pakiti, Wellington, Blenheim, Makara and Poirua.

GEONET reported this earthquake of M 5.3 was felt with moderate intensity in Cook Strait and Southern North Island. 17552  people reported feeling this event; 7113 with weak intensity; 6756 with light shaking; 1561 moderate; 101 strong; 5 with severe and 14 with extreme shaking.

 

JAPAN AND KURIL ISLANDS

 

O: 12OCT2021 03:35:44  25.4N  126.5E mb=4.9  EMSC   RYUKYU ISLANDS, JAPAN        

P: 19OCT2021 137887    25.0N  127.0E 4.0-5.6 CAAAA  Ryukyu Islands             

 

O: 12OCT2021 03:18:59  30.1N  142.9E mb=5.2  EMSC   IZU ISLANDS, JAPAN REGION    

P:  7OCT2021 137614    29.0N  142.0E 4.0-5.4 BBAAA  Bonin Islands              

 

O: 11OCT2021 23:09:59  48.4N  153.7E Mw=5.8  EMSC   KURIL ISLANDS                

P: 12OCT2021 137986    49.0N  153.0E 3.5-5.4 AAAAA  NE Pacific                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 11OCT2021 23:14:46  35.7N  117.5W ML=2.8  EMSC   SOUTHERN CALIFORNIA          

P:  7OCT2021 137675    35.9N  117.7W 2.5-4.8 BAAAA  So. California             

 

NEIC reported this earthquake of M 3.1 in Ridgecrest, California was felt with intensity II-III in the area(s) of Ridgecrest, California and in Trona.

 

O: 11OCT2021 19:57:51  31.2N  115.3W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO

O: 11OCT2021 21:56:44  31.1N  115.6W ML=3.1  EMSC   BAJA CALIFORNIA, MEXICO      

P:  9OCT2021 137665    32.0N  116.3W 2.5-4.7 AAAAA  So. California             

 

O: 11OCT2021 20:38:55  37.5N  118.5W ml=2.3  EMSC   CENTRAL CALIFORNIA           

P:  7OCT2021 137632    37.4N  118.6W 2.5-4.8 BAAAA  California/Nevada area     

 

O: 11OCT2021 20:19:57  38.5N  119.4W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P: 16OCT2021 137897    38.8N  119.6W 2.5-4.4 BAAAA  California/Nevada area     

 

O: 12OCT2021 04:17:36  38.8N  122.7W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  9OCT2021 137641    38.5N  122.7W 2.5-4.7 BAAAA  Central California         

 

O: 11OCT2021 19:59:35  39.4N  122.1W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 13OCT2021 137992    40.0N  120.9W 2.5-4.6 AAAAA  Northern California        

 

O: 11OCT2021 17:38:14  39.5N  123.0W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P:  9OCT2021 137641    38.5N  122.7W 2.5-4.7 AAAAA  Central California         

 

 

ALASKA

 

O: 11OCT2021 18:25:47  51.5N  174.4W mb=4.9  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 12OCT2021 138015    52.2N  173.9W 3.5-4.9 AAAAA  Andreanoff Isls, Aleutians 

 

O: 11OCT2021 12:24:48  53.4N  160.0W ml=3.1  EMSC   SOUTH OF ALASKA              

P:  9OCT2021 137743    54.2N  162.5W 3.5-5.0 AABAA  Unimak Islands, Aleutians  

 

O: 11OCT2021 12:04:50  57.3N  146.1W ML=3.3  EMSC   GULF OF ALASKA               

P:  6OCT2021 137756    55.0N  149.0W 3.0-4.8 BCBAA  Northern Alaska            

 

O: 11OCT2021 16:28:29  61.9N  149.3W ML=3.0  EMSC   SOUTHERN ALASKA              

P:  9OCT2021 137750    61.1N  151.4W 3.2-5.5 AAAAA  Central Alaska             

 

O: 11OCT2021 13:59:30  56.3N  156.6W mb=4.4  EMSC   ALASKA PENINSULA

O: 11OCT2021 17:56:23  56.3N  156.5W mb=4.3  EMSC   ALASKA PENINSULA

O: 11OCT2021 19:35:56  56.3N  156.5W ML=3.3  EMSC   ALASKA PENINSULA

O: 11OCT2021 19:40:24  56.3N  156.6W mb=4.9  EMSC   ALASKA PENINSULA

O: 12OCT2021 00:54:11  56.3N  156.6W ML=3.4  EMSC   ALASKA PENINSULA

O: 12OCT2021 04:41:22  56.3N  156.7W ml=3.5  EMSC   ALASKA PENINSULA

O: 11OCT2021 09:10:24  56.4N  156.7W Mw=6.9  EMSC   ALASKA PENINSULA

O: 11OCT2021 09:30:52  56.4N  156.5W ml=3.2  EMSC   ALASKA PENINSULA

O: 11OCT2021 09:26:20  56.3N  156.6W ML=3.9  EMSC   ALASKA PENINSULA             

P: 12OCT2021 138011    54.7N  156.9W 3.5-5.9 ABAAA  Alaska Peninsula           

 

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: 11OCT2021 22:49:02  31.7N  104.4W mb=2.8  EMSC   WESTERN TEXAS

O: 12OCT2021 05:59:13  31.7N  104.4W ML=3.0  EMSC   WESTERN TEXAS

O: 11OCT2021 12:48:31  31.7N  104.4W ML=2.2  EMSC   WESTERN TEXAS                

P:  4OCT2021 137664    31.2N  104.1W 2.0-4.0 CAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 11OCT2021 21:31:42  35.5N   96.8W ML=2.3  EMSC   OKLAHOMA                     

P: 13OCT2021 137954    35.0N   97.0W 2.0-4.1 AAAAA  Southern Plains             

 

O: 12OCT2021 00:32:20  36.5N   97.0W ML=2.1  EMSC   OKLAHOMA                     

P:  8OCT2021 137681    37.0N   98.0W 2.0-4.2 AAAAA  Southern Plains            

 

HAWAII

 

O: 11OCT2021 08:00:11  19.3N  155.5W ML=3.3  EMSC   ISLAND OF HAWAII, HAWAII      

P: 12OCT2021 137858    18.9N  155.4W 3.0-4.6 AAAAA  Hawaii                     

 

STRONG EARTHQUAKE SHAKES HAWAII

 

EARTHQUAKE SUMMARY FOR OCTOBER 10, 2021

 

A strong earthquake of M 6.2 shook most of the state of Hawaii, U.S. today. It was reported with maximum intensity VI in Naalehu; V in Hawaii National Park, Captain Cook, Honaunau, Volcano, Mountain View, IV in Pahala, Holualoa, Pahoa, Kealakekua with lesser shaking as far to the west as Waimea. There have been only two earthquakes in Hawaii with M>=6.2 in the past 30 years – both north of today's epicenter in central and northern Hawaii Island - on May 4, 2018 with M 6.9 and as an M 6.7 on October 15, 2006. Today's earthquake occurred near the Loi'hi Seamount south of Hawaii and is not directly associated with the current major eruption of Kilauea volcano to the north. The shaking caused some doors to open and some items to be thrown from shelves in businesses. No major damage or casualties were reported and a tsunami does not appear to have been generated with this earthquake. The earthquake occurred within minutes of the maximum of a geomagnetic storm at local solar noon and was probably promoted by high tidal stresses associated with the new moon and the geomagnetic storm, which stresses maximize near this hour,  as noted in this and previous issues of this summary as:

 

 

"The New moon arrived at 11:05 UT on October 6. Longitudes which were at local solar noon at this time are near 15 East while those at local solar midnight are near 165 West longitude. In the west these include most areas of Europe and Africa and in the east the central Aleutians and the Alaska Peninsula, Hawaii and the Tonga-Fiji-Kermadec arc. These areas are the most likely to see a strong tidally triggered earthquake in the next week. Other areas may also see tidal triggering. These are most likely to occur near local solar midnight and local solar noon. The possibility of a strong to major earthquake is considered moderate to strong before October 10." (October 4-10, 2021)

 

Readers should note that Hawaii is located near the longitude of maximum tidal stress with this new moon. The mainshock also occurred as a strong geomagnetic storm was reaching maximum intensity as noted in this summary:

 

"The geomagnetic field saw quiet  conditions today. The AP level was 9.  High latitude geomagnetic field  saw active conditions with AP 15. Enhanced seismicity is likely at higher latitudes and near the geomagnetic equator with this disturbance in the next several days." (October 9-10, 2021)

 

Forecast 137594 had expected enhanced seismicity in Hawaii was likely with the new moon on October 6 within about 50 km of today's epicenter. Today's event was located at the seventh note (52 degrees) from an M 7.0 in Guerrero, Mexico of September 8 and the strong seismicity of March 4 and following in the Kermadec Islands as well as near this distance from the M 7.2 and 6.9 in Vanuatu of early October, 2021.

 

O: 10OCT2021 21:48:36  18.8N  155.5W ml=6.2  ANSS   SSE of Naalehu Hawaii

O: 10OCT2021 21:48:36  19.0N  155.6W Mw=5.7  EMSC   HAWAII REGION, HAWAII

O: 10OCT2021 22:45:47  19.0N  155.6W ML=3.3  EMSC   ISLAND OF HAWAII, HAWAII

O: 10OCT2021 09:31:49  19.2N  155.5W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII

O: 11OCT2021 01:29:14  19.2N  155.5W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII

O: 10OCT2021 21:53:07  18.9N  155.6W ML=4.3  EMSC   HAWAII REGION, HAWAII        

P:  6OCT2021 137594    19.4N  155.4W 3.0-4.8 BAAAA  Hawaii                     

 

The strong eruption of Cumbre Vieja Volcano in La Palma, Canary Islands, Spain continued at a higher intensity today. This included a partial collapse of the cone causing huge chunks of lava, some the size of three-story building to roll down the slope. The lava reached an industrial complex and destroyed more buildings. So far 1186 buildings have been destroyed in the eruption including nearly all structures in the village of Todoque. The eruption has also covered about 1200 acres of land and caused about 6000 of the islands 80,000 residents to be evacuated according to accounts in Reuters. The strongest earthquake of the day was an M 4.3, matching the strongest event recorded in the current eruption as noted in a previous issue of this summary:

 

 

" The strongest earthquake in the current eruption occurred today with M 4.3, also the strongest in the Canary Islands since an M 5.4 on December 27, 2013 following a similar eruptive phase.

 

The M 4.3 occurred within about an hour of local solar noon and may have been promoted by high tidal stresses with the new moon which maximize near this hour." (October 8, 2021)

 

Today's activity is located at the seventh node (51-52 degrees) from the M 7.2 in Haiti of August 14, 2021 and was probably promoted by energy from that source.

 

O: 10OCT2021 09:26:27  28.6N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION

O: 10OCT2021 21:46:27  28.6N   17.8W ML=4.3  EMSC   CANARY ISLANDS, SPAIN REGION

O: 10OCT2021 13:05:38  28.7N   17.8W ML=3.9  EMSC   CANARY ISLANDS, SPAIN REGION

O: 10OCT2021 07:04:52  28.6N   17.8W ML=3.3  EMSC   CANARY ISLANDS, SPAIN REGION 

 

While the Alaska Peninsula remained quiet today with only an M 3.2 reported in the area, the area is at the same longitude (156 West) as Hawaii and as noted above in the tidal forecast could see enhanced seismicity and the possibility of a strong earthquake in the next several days. A strong geomagnetic storm at high latitudes would reinforce this possibility.

 

O: 11OCT2021 00:16:09  58.1N  154.4W ML=3.2  EMSC   ALASKA PENINSULA             

P:  9OCT2021 137748    60.1N  153.4W 3.2-5.4 ABAAA  Central Alaska             

 

An M 4.8 occurred today in the Reykjanes Ridge south of Iceland. It was not reported felt in this remote area. This epicenter is within about 100 km of the exact antipode of an M 6.1 which hit the Macquarie Island area on October 7. This summary suggested this possibility at the time as:

 

"The antipode of this epicenter in the Macquarie Island area is in the Reykjanes Ridge, north Atlantic south of Iceland. This area often sees enhanced seismicity following strong earthquakes in Macquarie Island." (October 7-8, 2021)

 

Forecast 137737 had expected today's event within about 100 km of this epicenter was likely around October 10.

 

O: 10OCT2021 16:09:34  57.9N   32.7W mb=4.8  EMSC   REYKJANES RIDGE              

P: 10OCT2021 137737    59.0N   31.0W 4.0-5.8 ABAAA  North 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: 10OCT2021 16:11:25  27.4N   55.3E mb=4.7  EMSC   SOUTHERN IRAN                

P:  5OCT2021 137624    28.0N   56.0E 3.5-5.1 BAAAA  So. Iran/Persian Gulf      

 

O: 10OCT2021 16:29:40  30.4N   94.8E mb=4.7  EMSC   EASTERN XIZANG               

P:  9OCT2021 137688    33.0N   92.0E 3.8-5.2 ACBAA  Xizang                      

 

O: 10OCT2021 21:52:04  32.3N   49.6E mb=4.4  EMSC   WESTERN IRAN                 

P:  8OCT2021 137677    34.0N   49.0E 3.8-5.2 ABAAA  So. Iran                   

 

O: 10OCT2021 15:02:40  30.1N   67.9E mb=4.5  EMSC   PAKISTAN                      

P:  3OCT2021 137662    33.0N   74.0E 3.8-5.3 CCCAA  Pakistan                   

 

NEIC reported this earthquake of M 4.5 in Pakistan was felt with intensity II-III in the area(s) of Pakistan at Sibi and Quetta, Baluchistan.

 

O: 10OCT2021 11:39:34  36.5N   70.9E mb=4.3  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  6OCT2021 137647    36.0N   69.0E 3.8-5.4 BABAA  Hindu Kush/Pakistan        

 

INDONESIA AND PHILIPPINES

 

O: 10OCT2021 11:32:35   3.4N  123.0E mb=4.5  EMSC   CELEBES SEA                  

P:  7OCT2021 137558     6.0N  124.0E 4.0-5.4 BCAAA  Mindanao, Philippines      

 

O: 10OCT2021 10:59:08   5.2N  126.5E ML=4.5  EMSC   MINDANAO, PHILIPPINES        

P:  6OCT2021 137556     5.0N  128.0E 4.0-5.4 BABAA  Halmahera                  

 

O: 11OCT2021 03:09:54   9.1S  122.4E mb=4.9  EMSC   SAVU SEA                     

P:  9OCT2021 137768    10.0S  124.0E 4.0-5.5 AABAA  Flores Island area         

 

O: 10OCT2021 20:31:51   9.7S  118.6E ML=4.4  EMSC   SUMBAWA REGION, INDONESIA

O: 10OCT2021 14:43:02   9.3S  119.5E ML=4.0  EMSC   SUMBA REGION, INDONESIA      

P:  7OCT2021 137581     8.0S  119.0E 4.0-5.4 BBAAA  Sumbawa Island area        

P:  9OCT2021 137777    11.0S  118.0E 4.0-5.4 ABBAA  So. of Indonesia           

 

O: 11OCT2021 05:32:54  14.9N   96.7E ML=4.8  EMSC   ANDAMAN ISLANDS, INDIA REGION

P:  5OCT2021 137585    14.0N   93.0E 4.0-5.6 CACAA  Andaman Islands            

 

CENTRAL AND SOUTH AMERICA

 

O: 11OCT2021 04:32:41  10.9N   85.8W ML=4.0  EMSC   COSTA RICA                   

P: 10OCT2021 137602    12.0N   87.0W 3.5-5.5 ABAAA  Nicaragua                  

 

O: 10OCT2021 15:05:36  11.7S   71.5W mb=4.5  EMSC   CENTRAL PERU                 

P:  9OCT2021 137766    15.0S   71.0W 4.0-5.4 ACAAA  Central Peru               

 

NEIC reported this earthquake of M 4.5 in Southern Peru was felt with intensity II-III in the area(s) of Southern Peru at Arequipa.

 

O: 10OCT2021 18:05:38  14.0N   93.3W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P:  6OCT2021 137588    16.0N   94.0W 3.5-5.2 BBAAA  Chiapas, Mexico            

 

O: 10OCT2021 16:42:46  16.5N   99.6W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO

O: 10OCT2021 11:53:30  16.3N   99.5W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  8OCT2021 137606    17.0N  100.0W 3.5-5.4 AAAAA  Oaxaca, Mexico             

 

O: 10OCT2021 09:23:27  16.6S   72.2W mb=4.5  EMSC   NEAR COAST OF SOUTHERN PERU  

P:  9OCT2021 137766    15.0S   71.0W 4.0-5.4 ABAAA  Central Peru               

 

O: 10OCT2021 12:41:20  18.3N   74.4W ML=3.5  EMSC   HAITI REGION

O: 10OCT2021 10:11:52  18.3N   73.3W ML=3.2  EMSC   HAITI REGION                 

P:  7OCT2021 137609    20.0N   74.0W 3.4-4.9 BBAAA  Puerto Rico                

 

O: 10OCT2021 19:55:00  18.8N   66.5W Md=3.0  EMSC   PUERTO RICO REGION           

P:  5OCT2021 137607    19.0N   67.0W 3.4-5.0 BAAAA  Puerto Rico                

 

O: 10OCT2021 10:47:14  19.3N   69.9W ML=3.1  EMSC   DOMINICAN REPUBLIC           

P:  9OCT2021 137613    20.0N   69.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O: 10OCT2021 18:43:22  21.8S   68.3W mb=4.2  EMSC   ANTOFAGASTA, CHILE           

P:  5OCT2021 137785    21.0S   69.0W 4.0-5.6 BAAAA  Coast No. Chile            

 

O: 11OCT2021 02:14:50  22.4S   67.5W mb=4.6  EMSC   POTOSI, BOLIVIA              

P:  7OCT2021 137783    23.0S   67.0W 4.0-5.4 BAAAA  Argentina                  

 

O: 10OCT2021 14:03:13  23.9S   67.0W mb=4.3  EMSC   JUJUY, ARGENTINA

O: 10OCT2021 23:21:44  23.1S   66.8W mb=4.4  EMSC   JUJUY, ARGENTINA             

P:  7OCT2021 137783    23.0S   67.0W 4.0-5.4 BAAAA  Argentina                   

P:  9OCT2021 137783    24.0S   67.0W 4.0-5.4 AAAAA  Argentina                  

 

 

AFRICA AND EUROPE

 

O: 10OCT2021 09:26:27  28.6N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION

O: 10OCT2021 21:46:27  28.6N   17.8W ML=4.3  EMSC   CANARY ISLANDS, SPAIN REGION

O: 10OCT2021 13:05:38  28.7N   17.8W ML=3.9  EMSC   CANARY ISLANDS, SPAIN REGION

O: 10OCT2021 07:04:52  28.6N   17.8W ML=3.3  EMSC   CANARY ISLANDS, SPAIN REGION 

 

SOUTHWEST PACIFIC

 

O: 10OCT2021 15:43:40  17.9S  178.5W mb=4.4  EMSC   FIJI REGION                  

P:  9OCT2021 137779    17.0S  177.0W 4.0-5.7 AABAA  Tonga Islands              

 

O: 10OCT2021 07:47:04  20.0S  177.5W mb=4.3  EMSC   FIJI REGION                  

P:  7OCT2021 137780    19.0S  176.0W 4.0-5.6 BABAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O: 10OCT2021 16:09:34  57.9N   32.7W mb=4.8  EMSC   REYKJANES RIDGE              

P: 10OCT2021 137737    59.0N   31.0W 4.0-5.8 ABAAA  North Mid-Atlantic Ridge   

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 10OCT2021 11:02:58  32.0S  179.6E mb=4.2  EMSC   KERMADEC ISLANDS REGION      

P:  4OCT2021 137803    32.0S  179.0E 4.0-5.5 CAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 10OCT2021 14:16:15  42.4N  143.1E mb=4.9  EMSC   HOKKAIDO, JAPAN REGION       

P:  7OCT2021 137694    43.0N  146.0E 3.5-5.7 BABAA  Hokkaido, Japan             

 

NEIC reported this earthquake of M 4.9 in Hokkaido, Japan was felt with intensity II-III in the area(s) of Hokkaido, Japan at Wakkanai.

 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 10OCT2021 07:21:46  31.4N  114.4W ML=3.0  EMSC   GULF OF CALIFORNIA

O: 10OCT2021 07:56:44  31.4N  114.5W ML=3.4  EMSC   GULF OF CALIFORNIA

O: 10OCT2021 07:20:21  31.8N  113.7W ML=3.5  EMSC   SONORA, MEXICO

 

O: 10OCT2021 07:19:09  31.4N  114.5W ML=3.2  EMSC   GULF OF CALIFORNIA           

P:  9OCT2021 137665    32.0N  116.3W 2.5-4.7 AABAA  So. California             

 

O: 10OCT2021 23:30:08  36.1N  117.7W Ml=2.0  EMSC   CENTRAL CALIFORNIA           

P:  7OCT2021 137675    35.9N  117.7W 2.5-4.8 BAAAA  So. California             

 

O: 10OCT2021 09:55:04  38.8N  119.6W ml=2.5  EMSC   NEVADA

O: 10OCT2021 13:24:25  38.5N  119.5W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P:  5OCT2021 137635    38.7N  119.7W 2.5-4.5 BAAAA  California/Nevada area     

 

O: 11OCT2021 02:52:31  39.5N  123.0W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P:  9OCT2021 137641    38.5N  122.7W 2.5-4.7 AAAAA  Central California         

 

ALASKA

 

O: 10OCT2021 10:59:22  51.9N  175.0W mb=4.0  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P:  5OCT2021 137728    51.3N  176.8W 3.5-4.9 BAAAA  Andreanoff Isls, Aleutians 

 

O: 11OCT2021 00:16:09  58.1N  154.4W ML=3.2  EMSC   ALASKA PENINSULA             

P:  9OCT2021 137748    60.1N  153.4W 3.2-5.4 ABAAA  Central Alaska             

 

O: 11OCT2021 06:18:30  63.4N  145.5W mb=3.9  EMSC   CENTRAL ALASKA                

P:  8OCT2021 137753    63.3N  147.5W 3.2-5.2 BAAAA  Central Alaska             

 

O: 10OCT2021 12:05:10  64.7N  149.3W ML=3.2  EMSC   CENTRAL ALASKA               

P:  8OCT2021 137753    63.3N  147.5W 3.2-5.2 ABAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.1 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska at Delta Junction.

 

O: 10OCT2021 14:02:15  65.3N  166.2W 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

 

O: 10OCT2021 13:17:14  31.6N  104.5W ML=3.9  EMSC   WESTERN TEXAS                

P:  4OCT2021 137664    31.2N  104.1W 2.0-4.0 CAAAA  SW U.S.A                    

 

NEIC reported this earthquake of M 3.8 in Western Texas was felt with intensity V in the area(s) of Western Texas  Van Horn and Carlsbad, New Mexico.

 

O: 10OCT2021 19:25:53  44.3N  115.2W ML=2.7  EMSC   SOUTHERN IDAHO               

P:  8OCT2021 137700    44.4N  115.1W 2.0-4.1 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.

 

HAWAII

 

O: 10OCT2021 21:48:36  18.8N  155.5W ml=6.2  ANSS   SSE of Naalehu Hawaii

O: 10OCT2021 21:48:36  19.0N  155.6W Mw=5.7  EMSC   HAWAII REGION, HAWAII

O: 10OCT2021 22:45:47  19.0N  155.6W ML=3.3  EMSC   ISLAND OF HAWAII, HAWAII

O: 10OCT2021 09:31:49  19.2N  155.5W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII

O: 11OCT2021 01:29:14  19.2N  155.5W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII

O: 10OCT2021 21:53:07  18.9N  155.6W ML=4.3  EMSC   HAWAII REGION, HAWAII        

P:  6OCT2021 137594    19.4N  155.4W 3.0-4.8 BAAAA  Hawaii                     

STRONG VANUATU QUAKE FOLLOWED BY QUAKE IN CENTRAL PERU

 

EARTHQUAKE SUMMARY FOR OCTOBER  9, 2021

 

The strongest earthquake in the world today was an M 6.8 in the region southeast of the Vanuatu Islands. It appears to be an aftershock of the M 7.2 that hit this region on October 2, 2021. Today's event ws felt lightly with intensity II-III in Fiji at Sigatoka, Nadi, Lautoka, Ba, Suba, Isangel, Labasa, Vila, Vanuatu, Yale, and Mont-Dore, New Caledonia. The mainshock had been noted in this summary on October 2 as:

 

"Today's event of M 7.3 is the strongest recorded within about 200 km of this epicenter in the past 30 years. An M 7.2 hit the area on August 12, 2016 and a larger event of M 7.6 occurred in the area on March 3, 1990 with M 7.6. A major earthquake of M 7.7 and large aftershocks hit the area of the Loyalty Islands on February 10, 2021 about 400 km to the southwest of today's epicenter." (October 2, 2021)

 

Forecasts 137786 and 137793 had expected today's activity was likely within about 150 km was likely around October 5-7.

 

O:  9OCT2021 10:58:30  21.2S  174.5E Mw=6.8  EMSC   VANUATU REGION               

P:  5OCT2021 137793    21.0S  176.0E 4.0-5.8 BAAAA  Tonga/Fiji                 

P:  7OCT2021 137786    22.0S  172.0E 4.0-5.4 AABAA  Loyalty Islands             

 

The M 6.8 in the southern Vanuatu region was followed later in the day by an M 5.7 in Central Peru. This event was felt with intensity IV in Cusco Peru a Santa Ana and II-III in Cusco, Ayacucho, Rio Branco, Acre, Brazil and in La Paz, Bolivia. A similar earthquake of M 5.6 occurred in Southern Peru yesterday as noted in the previous issue of this summary:

 

"An earthquake of M 5.5-5.6 in Southern Peru today was felt with moderate intensity VII in Arequipa, Peru. This was the strongest earthquake in the world today. It occurred on the geomagnetic equator and may have been promoted by the geomagnetic disturbance two days ago. The last earthquake of greater magnitude within about 150 km of this epicenter occurred as an M 6.0 on May 31, 2020. This followed a major quake about 200 km to the northeast of this on March 1, 2019. Forecast 137766 had expected today's event within about 50 km of this epicenter was likely around October 9. This epicenter is at 103-104 degrees from the M 8.1 in the Alaska Peninsula and at M 7.2 in Vanuatu of October 2, 2021 and was probably promoted by energy from those sources. Further aftershocks in the Vanuatu region are expected as the seismic ping-pong effect from Peru is likely." (October 8-9, 2021)

 

Today's epicenter is also at 105 degrees from the mainshock and aftershock today in the area east of southern Vanuatu and was probably promoted by energy from that source. Further reverberation between the two areas is still possible. Other earthquakes today near 103 degrees from the Vanuatu epicenter occurred in the South Sandwich Islands (M 4.9); Costa Rica (M 4.3), central Peru (M 4.3); Atacama, Chile (M 4.0); Antofagasta Chile (M 4.8). The last earthquake of larger magnitude within about 150 km of today's epicenter was an M 7.1 at a deep focus on August 24, 2018. The last of larger magnitude of shallow focus was an M 6.4 on January 10, 1998. Forecast 137766 had expected enhanced seismicity in Central Chile around October 9.

 

O: 10OCT2021 00:20:40  11.7S   71.6W Mw=5.7  EMSC   CENTRAL PERU                 

P:  9OCT2021 137766    15.0S   71.0W 4.0-5.4 ACAAA  Central Peru               

 

An earthquake of M 5.6 also occurred in the Sea of Okhotsk, Russia west of the

Kuril Islands today. It was not reported felt in this remote area. This may be an aftershock of an M 5.8 in the Sea of Okhotsk on September 3, 2021. Forecast 137721 had expected regional seismic enhancement in early October.

 

O:  9OCT2021 07:19:26  50.0N  149.9E Mw=5.6  EMSC   SEA OF OKHOTSK               

P:  3OCT2021 137721    49.0N  153.0E 3.5-5.6 CACAA  So. Kurils                 

 

A further earthquake of M 3.6-3.9 occurred today in the current eruption of Kilauea Volcano, Hawaii. NEIC reported today's earthquake was felt with intensity IV in Naalehu and II-III in Volcano, Hilo, Kurtistown and Papaikou, Hawaii. A similar event hit the region yesterday and was reported in this summary as:

 

"An M 3.7 earthquake in Hawaii continued the eruption of Kilauea today. NEIC reported it was felt with intensity II-III in Hawaii at Pahala, Naalehu, Captain Cook, Holualoa and Kailua Kona. Forecast 137594 expected today's event within the eruptive area was likely around October 6, 2021. This is the strongest earthquake in the U.S. or Canada today. An M 4.5-4.6 hit this area two days ago on October 6 but this is one of the strongest earthquakes to date associated with the current Kilauea eruption." (October 7-8, 2021)

 

Forecast 137594 had expected today's event within about 25 km of this epicenter was likely around October 6.

 

O:  9OCT2021 23:08:42  19.2N  155.4W ML=3.9  EMSC   ISLAND OF HAWAII, HAWAII     

P:  6OCT2021 137594    19.4N  155.4W 3.0-4.8 BAAAA  Hawaii                     

 

The strongest earthquake in the U.S. or Canada today was an M 4.0 in the Rat Islands, Aleutians. The last earthquake in the Rat Islands of M>=4 was an M 4.3 on September 20, 2021 but the last within about 140 km of today's epicenter was an M 4.6 on August 24, 2021. Forecast 137740 had expected today's event within about 50 km was likely around October 7.

 

O:  9OCT2021 15:46:49  51.7N  178.4E mb=4.0  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  7OCT2021 137740    52.0N  178.0E 4.0-5.8 AAAAA  Rat 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: 10OCT2021 01:48:58  30.3N   94.8E mb=4.7  EMSC   EASTERN XIZANG               

P:  9OCT2021 137688    33.0N   92.0E 3.8-5.2 ACBAA  Xizang                     

 

O:  9OCT2021 20:37:36  32.9N   58.8E ML=4.6  EMSC   EASTERN IRAN                 

P: 10OCT2021 137658    36.0N   52.0E 3.8-5.2 ACCAA  No. Iran                   

 

O:  9OCT2021 07:19:26  50.0N  149.9E Mw=5.6  EMSC   SEA OF OKHOTSK               

P:  3OCT2021 137721    49.0N  153.0E 3.5-5.6 CACAA  So. Kurils                 

 

INDONESIA AND PHILIPPINES

 

O:  9OCT2021 13:09:05   4.1S  133.9E mb=4.7  EMSC   NEAR S COAST OF PAPUA, INDONES

P:  5OCT2021 137582     2.0S  135.0E 4.0-5.6 BCAAA  West Irian, PNG            

 

O:  9OCT2021 10:39:14   4.5S  153.4E mb=5.1  EMSC   NEW IRELAND REGION, P.N.G.   

O: 09OCT2021 20:01:52   4.6S  152.9E mb=5.4  EMSC   NEW BRITAIN REGION, P.N.G.

P:  6OCT2021 137579     6.0S  155.0E 4.0-5.5 BBBAA  Solomon Islands            

 

NEIC reported these earthquakes of M 5.1 and 5.5 in New Ireland, PNG were felt with intensity II-III in the area(s) of New Ireland, PNG at Namatanal, Kokopo and Kimbe, New Britain.

 

CENTRAL AND SOUTH AMERICA

 

O: 10OCT2021 00:20:40  11.7S   71.6W Mw=5.7  EMSC   CENTRAL PERU                 

P:  9OCT2021 137766    15.0S   71.0W 4.0-5.4 ACAAA  Central Peru               

 

O:  9OCT2021 11:10:49   7.9N   77.6W ML=4.1  EMSC   PANAMA-COLOMBIA BORDER REGION

P:  4OCT2021 137554     7.0N   82.0W 3.5-5.1 BACAA  Costa Rica                 

 

O:  9OCT2021 21:29:30  10.2N   86.2W ML=4.3  EMSC   OFF COAST OF COSTA RICA      

P: 10OCT2021 137602    12.0N   87.0W 3.5-5.5 ABAAA  Nicaragua                  

 

O: 10OCT2021 00:20:40  11.7S   71.6W Mw=5.7  EMSC   CENTRAL PERU                 

P:  9OCT2021 137766    15.0S   71.0W 4.0-5.4 ACAAA  Central Peru               

 

O:  9OCT2021 08:02:50  12.6S   76.9W ML=4.3  EMSC   NEAR COAST OF CENTRAL PERU   

P:  6OCT2021 137766    14.0S   76.0W 4.0-5.6 BBAAA  Central Peru               

 

O:  9OCT2021 13:23:09  15.0S   73.5W mb=4.3  EMSC   CENTRAL PERU                 

P:  5OCT2021 137766    15.0S   73.0W 4.0-5.6 BAAAA  Central Peru               

 

NEIC reported this earthquake of M 4.3 in Southern Peru was felt with intensity II-III in the area(s) of Southern Peru at Puquio, Ayacucho.

 

O: 09OCT2021 23:11:00  15.6S   72.2W mb=4.4  EMSC   SOUTHERN PERU

O: 09OCT2021 07:41:21  15.7S   71.9W ML=4.0  EMSC   SOUTHERN PERU

O: 09OCT2021 14:31:22  15.7S   72.3W mb=4.5  EMSC   SOUTHERN PERU

O: 10OCT2021 00:46:55  15.7S   71.9W ML=4.0  EMSC   SOUTHERN PERU

O:  9OCT2021 17:55:33  15.6S   71.9W mb=4.6  EMSC   SOUTHERN PERU                

P:  9OCT2021 137766    15.0S   71.0W 4.0-5.4 AAAAA  Central Peru               

 

O: 09OCT2021 08:05:57  14.7N   93.3W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO

O:  9OCT2021 09:33:12  15.7N   92.2W mb=4.6  EMSC   CHIAPAS, MEXICO              

P:  7OCT2021 137592    14.0N   91.0W 3.5-5.2 ABAAA  Guatemala                   

 

O:  9OCT2021 15:43:08  16.0N   98.4W ML=4.4  EMSC   OFFSHORE OAXACA, MEXICO      

P:  4OCT2021 137605    16.0N   98.0W 3.5-5.3 BAAAA  Oaxaca, Mexico             

 

O: 09OCT2021 08:12:03  18.3N   74.0W ML=3.3  EMSC   HAITI REGION

O:  9OCT2021 09:49:29  18.2N   74.1W ML=3.5  EMSC   HAITI REGION                 

P:  7OCT2021 137609    20.0N   74.0W 3.4-4.9 ABAAA  Puerto Rico                

 

O:  9OCT2021 23:05:03  18.7N   66.8W Md=3.0  EMSC   PUERTO RICO REGION           

P:  5OCT2021 137607    19.0N   67.0W 3.4-5.0 BAAAA  Puerto Rico                

 

O: 09OCT2021 20:17:40  18.9N   65.3W Md=3.3  EMSC   PUERTO RICO REGION

O: 09OCT2021 18:55:10  19.1N   66.0W Md=3.2  EMSC   PUERTO RICO REGION

O: 10OCT2021 00:49:32  19.2N   65.9W Md=3.3  EMSC   PUERTO RICO REGION           

P:  8OCT2021 137596    18.0N   65.0W 3.0-5.3 ABAAA  Leeward Islands            

 

O:  9OCT2021 09:52:18  19.6N   92.5W ML=4.3  EMSC   BAY OF CAMPECHE              

P:  3OCT2021 137589    17.0N   94.0W 3.5-5.3 CCBAA  Chiapas, Mexico             

 

O:  9OCT2021 19:25:48  19.9N   70.3W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P:  6OCT2021 137609    19.0N   71.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 09OCT2021 07:15:12  21.8S   68.8W mb=4.3  EMSC   ANTOFAGASTA, CHILE

O:  9OCT2021 23:33:45  21.2S   68.7W mb=4.8  EMSC   ANTOFAGASTA, CHILE           

P:  7OCT2021 137782    21.0S   67.0W 4.0-5.9 AABAA  Argentina                  

 

NEIC reported this earthquake of M 4.8 in northern Chile was felt with intensity II-III in the area(s) of northern Chile at Antofagasta, Calama and Iquique, Tarapaca.

 

O:  9OCT2021 20:37:02  27.4S   67.3W ML=4.0  EMSC   CATAMARCA, ARGENTINA         

P:  2OCT2021 137784    28.0S   67.0W 4.0-5.4 CAAAA  Argentina                  

 

AFRICA AND EUROPE

 

O: 09OCT2021 20:27:30  28.6N   17.8W ML=3.8  EMSC   CANARY ISLANDS, SPAIN REGION

O:  9OCT2021 09:28:42  28.6N   17.8W ML=3.8  EMSC   CANARY ISLANDS, SPAIN REGION 

 

O:  9OCT2021 21:18:52  35.9N    7.7E mb=4.0  EMSC   NORTHERN ALGERIA             

P:  3OCT2021 137651    39.0N   14.0E 3.0-4.6 CCCAA  Mediterranean/Sicily       

 

SOUTHWEST PACIFIC

 

O: 10OCT2021 05:04:25  17.5S  175.1W mb=4.3  EMSC   TONGA                        

P:  9OCT2021 137779    17.0S  177.0W 4.0-5.7 AABAA  Tonga Islands              

 

O:  9OCT2021 15:45:15  18.0S  178.1W mb=4.4  EMSC   FIJI REGION                  

P:  9OCT2021 137779    17.0S  177.0W 4.0-5.7 AAAAA  Tonga Islands              

 

O:  9OCT2021 10:58:30  21.2S  174.5E Mw=6.8  EMSC   VANUATU REGION               

P:  5OCT2021 137793    21.0S  176.0E 4.0-5.8 BAAAA  Tonga/Fiji                 

P:  7OCT2021 137786    22.0S  172.0E 4.0-5.4 AABAA  Loyalty Islands            

 

 

OCEAN RIDGES

 

O: 10OCT2021 05:25:39  56.7S   27.5W mb=4.9  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  2OCT2021 137813    56.0S   27.0W 4.0-5.7 CAAAA  So. Sandwich Islands       

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 10OCT2021 05:06:57  30.8S  179.5E ML=4.5  EMSC   KERMADEC ISLANDS REGION      

P:  4OCT2021 137803    32.0S  179.0E 4.0-5.5 CBAAA  So. Kermadec Islands       

 

O:  9OCT2021 10:58:39  35.4S  141.1E ML=2.9  EMSC   VICTORIA, AUSTRALIA          

P: 28SEP2021 137331    37.0S  142.0E 4.0-5.0 CBAAA  Australia                   

 

JAPAN AND KURIL ISLANDS

 

O: 10OCT2021 05:09:30  40.0N  142.3E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  8OCT2021 137661    38.0N  141.0E 4.0-5.4 ABAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  9OCT2021 08:58:34  30.8N  114.3W ML=3.5  EMSC   GULF OF CALIFORNIA           

P:  8OCT2021 137663    30.2N  114.1W 2.0-4.0 AAAAA  SW U.S.A                   

 

O:  9OCT2021 16:50:05  33.9N  119.1W Ml=2.1  EMSC   CHANNEL ISLANDS REG., CALIFORN

P:  7OCT2021 137670    34.0N  118.7W 2.5-4.4 AAAAA  So. California             

 

O:  9OCT2021 22:40:32  36.8N  121.5W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P:  2OCT2021 137638    36.9N  121.7W 2.5-4.5 CAAAA  Central California         

 

O:  9OCT2021 19:54:34  36.9N  122.2W ML=2.2  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  7OCT2021 137639    37.2N  122.1W 2.5-4.8 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.5 in Northern California  was felt with intensity II-III in the area(s) of  Northern California at Santa Cruz, Felton, Boulder Creek, Seaside and Los Banos.

 

O: 10OCT2021 02:03:57  37.1N  117.0W ml=2.4  EMSC   NEVADA                       

P:  4OCT2021 137631    37.2N  117.3W 2.5-4.6 CAAAA  California/Nevada area     

 

O:  9OCT2021 09:23:35  38.8N  119.1W ml=2.0  EMSC   NEVADA                       

P:  5OCT2021 137635    38.7N  119.7W 2.5-4.5 BAAAA  California/Nevada area     

 

 

O: 09OCT2021 22:51:25  38.8N  122.8W Md=2.6  EMSC   NORTHERN CALIFORNIA

O: 10OCT2021 04:38:02  38.8N  122.8W Md=2.7  EMSC   NORTHERN CALIFORNIA

O:  9OCT2021 14:07:47  38.8N  122.8W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P:  9OCT2021 137641    38.5N  122.7W 2.5-4.7 AAAAA  Central California         

 

NEIC reported earthquakes of M 2.6 and 2.7 in the Geysers, Northern California were felt with intensity II-III in the area(s) of the Geysers, Northern California at Healdsburg and Kelseyville.

 

ALASKA

 

 

O:  9OCT2021 15:46:49  51.7N  178.4E mb=4.0  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  7OCT2021 137740    52.0N  178.0E 4.0-5.8 AAAAA  Rat Islands                

 

O: 10OCT2021 01:21:24  56.7N  149.5W ML=3.4  EMSC   GULF OF ALASKA               

P:  6OCT2021 137756    55.0N  149.0W 3.0-4.8 BBAAA  Northern Alaska            

 

O: 10OCT2021 01:00:22  57.0N  156.2W ML=3.1  EMSC   ALASKA PENINSULA

O:  9OCT2021 20:23:31  57.0N  156.2W ML=3.5  EMSC   ALASKA PENINSULA             

P:  7OCT2021 137744    54.7N  161.2W 3.5-5.0 ACCAA  Unimak Islands, Aleutians  

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  9OCT2021 15:25:45  43.5N  128.3W mb=3.5  EMSC   OFF COAST OF OREGON          

P:  5OCT2021 137713    43.9N  128.4W 3.0-4.6 BAAAA  Off Coast of Oregon        

 

NEIC reported this earthquake of M 3.5 off the coast of Oregon was felt with intensity IV in the area(s) of Oregon at Gold Beach.

 

O:  9OCT2021 21:10:58  49.4N  120.5W Ml=2.2  EMSC   BRITISH COLUMBIA, CANADA     

P:  9OCT2021 137724    47.7N  120.3W 2.0-4.2 ABAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 09OCT2021 09:00:38  44.3N  115.0W ML=2.9  EMSC   SOUTHERN IDAHO

O: 09OCT2021 11:34:35  44.3N  115.2W Ml=2.6  EMSC   SOUTHERN IDAHO

O: 09OCT2021 12:57:20  44.3N  115.1W Ml=2.4  EMSC   SOUTHERN IDAHO

O: 09OCT2021 13:29:45  44.3N  115.1W ML=2.6  EMSC   SOUTHERN IDAHO

O: 09OCT2021 14:22:31  44.3N  115.3W ML=2.4  EMSC   SOUTHERN IDAHO

O: 09OCT2021 07:16:15  44.4N  115.1W ML=2.5  EMSC   SOUTHERN IDAHO

O:  9OCT2021 07:19:03  44.3N  115.1W ML=2.8  EMSC   SOUTHERN IDAHO               

P:  8OCT2021 137700    44.4N  115.1W 2.0-4.1 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.

 

HAWAII

 

O:  9OCT2021 23:08:42  19.2N  155.4W ML=3.9  EMSC   ISLAND OF HAWAII, HAWAII     

P:  6OCT2021 137594    19.4N  155.4W 3.0-4.8 BAAAA  Hawaii                     

 

MODERATE QUAKE SHAKES SOUTHERN PERU

 

EARTHQUAKE SUMMARY FOR OCTOBER  8, 2021

 

An earthquake of M 5.5-5.6 in Southern Peru today was felt with moderate intensity VII in Arequipa, Peru. This was the strongest earthquake in the world today. It occurred on the geomagnetic equator and may have been promoted by the geomagnetic disturbance two days ago. The last earthquake of greater magnitude within about 150 km of this epicenter occurred as an M 6.0 on May 31, 2020. This followed a major quake about 200 km to the northeast of this on March 1, 2019. Forecast 137766 had expected today's event within about 50 km of this epicenter was likely around October 9. This epicenter is at 103-104 degrees from the M 8.1 in the Alaska Peninsula and at M 7.2 in Vanuatu of October 2, 2021 and was probably promoted by energy from those sources. Further aftershocks in the Vanuatu region are expected as the seismic ping-pong effect from Peru is likely.

 

O: 09OCT2021 05:21:07  16.0S   72.0W mb=4.3  EMSC   SOUTHERN PERU

O: 09OCT2021 04:47:52  15.6S   71.8W Mw=5.5  EMSC   SOUTHERN PERU

O: 09OCT2021 04:47:52  15.6S   71.9W Mw=5.6  ANSS   SOUTHERN PERU

O: 09OCT2021 05:50:11  15.6S   71.7W mb=4.7  EMSC   SOUTHERN PERU

O: 09OCT2021 06:12:50  15.7S   72.0W ML=4.0  EMSC   SOUTHERN PERU

O:  8OCT2021 09:28:00  15.5S   71.9W mb=4.2  EMSC   SOUTHERN PERU                

P:  9OCT2021 137766    15.0S   71.0W 4.0-5.4 AAAAA  Central Peru               

 

An earthquake of M 4.8 was widely felt in southeastern Puerto Rico today. NEIC reported intensity IV in Puerto Rico at Vieques, Mumacao, Luquillo, and II-III in Yabucca, Culebra, Ceiba, Punta Santiago, Puerto Real, Fajardo, and Naguabo. This is not an aftershock of the long-standing aftershock zone in southwestern Puerto Rico.  This is the strongest earthquake in southeastern Puerto Rico in the past year. An M 5.3 occurred a year ago on October 7, 2020 and an M 5.0 occurred a year before that on October 6, 2019. These seasonal earthquakes appear to be related to regional weather patterns. Forecast 137596 had expected today's event with in about 50 km was likely around October 8.

 

O: 08OCT2021 20:22:30  18.0N   65.4W ML=3.1  EMSC   PUERTO RICO REGION

O:  8OCT2021 18:28:23  18.0N   65.4W mb=4.6  EMSC   PUERTO RICO REGION           

P:  8OCT2021 137596    18.0N   65.0W 3.0-5.3 AAAAA  Leeward Islands            

 

An unusual earthquake of M 4.9 occurred in Victoria, Australia today. NEIC reported it was felt with intensity II-III in Victoria and South Australia at Murray Bridge, Horsham, Midua, Mount Barker, Victor Harbor, Adelaide, Mount Gambler, Swan Hill, Hamilton and Maryborough. This is the strongest earthquake within about 300 km of this epicenter in at least 30 years. An M 4.8 hit the area on October 27, 2001 and about 400 km northwest of this on May 3, 1997, the only similar quakes in Victoria since 1990. This follows an M 5.9 about 450 km southeast of this epicenter on September 21 in Victoria, Australia and may represent regional stress migration following that earthquake.

 

Forecast 137331 had expected today's event in late September or early October about 150 km south of today's epicenter. This epicenter is at 144-145 degrees from the M 7.2 in Haiti of August 14 and was probably promoted by energy  from that source.

 

O: 08OCT2021 17:02:25  35.4S  141.1E ML=3.0  EMSC   VICTORIA, AUSTRALIA

O: 08OCT2021 18:12:08  35.4S  141.1E ML=2.6  EMSC   VICTORIA, AUSTRALIA

O: 08OCT2021 17:20:40  35.5S  141.0E ML=2.8  EMSC   VICTORIA, AUSTRALIA

O: 08OCT2021 18:01:49  35.5S  141.1E ML=2.8  EMSC   VICTORIA, AUSTRALIA

O: 08OCT2021 23:44:33  35.5S  141.1E ML=2.6  EMSC   VICTORIA, AUSTRALIA

O:  8OCT2021 16:47:27  35.4S  141.0E mb=4.9  EMSC   VICTORIA, AUSTRALIA          

P: 28SEP2021 137331    37.0S  142.0E 4.0-5.0 CBAAA  Australia                  

 

The strongest earthquake in the U.S. or Canada today was an M 4.4 in the Fox Islands, Aleutians, Alaska. This is the strongest earthquake in the eastern Fox Islands since an M 4.5 on August 17, 2021. The last of significantly larger magnitude was an M 4.7 on July 3, 2021. Today's event was not reported felt in this remote area. Forecast 137733 had expected this activity in the eastern Fox Islands was likely about 100 km to the east around October 7.

 

O:  9OCT2021 05:59:49  53.2N  166.8W mb=4.4  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  7OCT2021 137733    53.7N  165.3W 3.5-4.9 AAAAA  Fox Islands, Aleutians     

 

The volcanic eruption at La Palma, Canary Islands, Spain intensified and spewed lava with rivers of lava emptying into the sea and causing further destruction of property today. The strongest earthquake in the current eruption occurred today with M 4.0, also the second strongest in the Canary Islands since an M 5.4 on December 27, 2013 following a similar eruptive phase. Hundreds have been evacuated and more than 800 buildings have been destroyed in the eruption, but no deaths have been attributed to the eruption to date. The M 4.0 occurred within about an hour of local solar noon while an M 3.9  occurred within minutes of local solar noon and may have been promoted by high tidal stresses with the new moon which maximize near these hour. Forecast 137308 had expected continuing eruptive earthquakes in the Canary Island at the end of September and early October.

 

O: 08OCT2021 23:55:05  28.6N   17.8W ML=4.0  EMSC   CANARY ISLANDS, SPAIN REGION

O:  8OCT2021 12:46:00  28.6N   17.9W ML=3.9  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 24SEP2021 137308    28.0N   18.0W 3.0-4.5 DAAAA  Canary 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:  8OCT2021 19:54:33  27.4N   92.9E ML=3.6  EMSC   ARUNACHAL PRADESH, INDIA     

P:  9OCT2021 137620    27.0N   92.0E 4.0-5.4 AAAAA  Myanmar                    

 

O:  9OCT2021 05:36:53  30.4N   94.8E mb=4.9  EMSC   EASTERN XIZANG               

P:  9OCT2021 137688    33.0N   92.0E 3.8-5.2 ACBAA  Xizang                     

 

O:  9OCT2021 06:05:31  32.4N   49.8E ML=4.6  EMSC   WESTERN IRAN                 

O: 08OCT2021 23:16:32  32.5N   49.7E mb=5.1  EMSC   WESTERN IRAN

P:  8OCT2021 137677    34.0N   49.0E 3.8-5.2 ABAAA  So. Iran                   

 

NEIC reported this earthquake of M 5.1 in  Western Iran was felt with intensity II-III in the area(s) of  Western Iran in Khuzestan at Masjed, Ahwaz and Aleshtar.

 

O:  8OCT2021 23:53:34  35.6N   82.4E mb=4.3  EMSC   XINJIANG-XIZANG BORDER REGION

P:  6OCT2021 137687    30.0N   82.0E 3.8-5.2 ACAAA  Xizang                      

 

O:  9OCT2021 06:54:11  63.3N  158.4E Mw=5.0  EMSC   MAGADANSKAYA OBLAST', RUSSIA 

 

INDONESIA AND PHILIPPINES

 

O:  8OCT2021 16:28:46   0.1S  124.2E ML=4.4  EMSC   MOLUCCA SEA                  

P:  4OCT2021 137580     1.0S  124.0E 4.0-5.5 BAAAA  Sulawesi area              

 

O:  8OCT2021 12:44:39   2.0N  128.5E mb=4.3  EMSC   HALMAHERA, INDONESIA         

P: 10OCT2021 137556     3.0N  129.0E 4.0-5.4 AAAAA  Halmahera                  

 

O:  8OCT2021 10:04:53   4.5N   95.4E mb=5.2  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 10OCT2021 137559     7.0N   92.0E 4.0-5.7 ACCAA  Nicobar Islands            

 

NEIC reported this earthquake of M 5.2 in Southern Sumatra was felt with intensity II-III in the area(s) of Southern Sumatra with IV at Meulaboh, and in Banda Aceh, Devantara and Padang Sidenpuan.

 

O:  8OCT2021 16:34:53   4.7S  153.9E mb=4.4  EMSC   NEW IRELAND REGION, P.N.G.   

P:  6OCT2021 137579     6.0S  155.0E 4.0-5.5 ABAAA  Solomon Islands            

 

O:  8OCT2021 13:24:14   6.1S  151.7E mb=4.9  EMSC   NEW BRITAIN REGION, P.N.G.   

P:  6OCT2021 137570     6.0S  151.0E 4.0-5.4 AAAAA  New Ireland                

 

O:  8OCT2021 20:11:57   7.2S  108.7E ML=4.0  EMSC   JAVA, INDONESIA              

P: 10OCT2021 137576     7.0S  105.0E 4.0-5.9 AACAA  So. of Java                

 

O:  8OCT2021 22:04:12   7.4S  128.8E mb=4.3  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 10OCT2021 137561     6.0S  129.0E 4.0-5.4 ABAAA  Banda Sea                  

 

O:  8OCT2021 20:11:09   7.8S  130.3E mb=4.4  EMSC   KEP. TANIMBAR REGION, INDONESI

O: 09OCT2021 06:03:56   6.9S  130.1E ML=4.3  EMSC   BANDA SEA

P:  8OCT2021 137584     6.0S  130.0E 4.0-5.5 ABAAA  West Irian, PNG            

 

 

CENTRAL AND SOUTH AMERICA

 

O:  8OCT2021 21:00:04  11.4S   77.9W ML=4.0  EMSC   NEAR COAST OF CENTRAL PERU   

P:  6OCT2021 137766    14.0S   76.0W 4.0-5.6 ACBAA  Central Peru               

 

O:  8OCT2021 12:00:04  14.1N   93.2W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P:  6OCT2021 137588    16.0N   94.0W 3.5-5.2 ABAAA  Chiapas, Mexico             

 

O:  8OCT2021 09:41:48  14.1S   74.5W ML=4.1  EMSC   CENTRAL PERU                 

P:  6OCT2021 137766    14.0S   76.0W 4.0-5.6 AABAA  Central Peru               

 

 

O: 09OCT2021 05:21:07  16.0S   72.0W mb=4.3  EMSC   SOUTHERN PERU

O: 09OCT2021 04:47:52  15.6S   71.8W Mw=5.5  EMSC   SOUTHERN PERU

O: 09OCT2021 05:50:11  15.6S   71.7W mb=4.7  EMSC   SOUTHERN PERU

O: 09OCT2021 06:12:50  15.7S   72.0W ML=4.0  EMSC   SOUTHERN PERU

O:  8OCT2021 09:28:00  15.5S   71.9W mb=4.2  EMSC   SOUTHERN PERU                 

P:  9OCT2021 137766    15.0S   71.0W 4.0-5.4 AAAAA  Central Peru               

 

O:  8OCT2021 23:07:50  15.6N   96.6W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P:  6OCT2021 137605    15.0N   97.0W 3.5-5.6 AAAAA  Oaxaca, Mexico              

 

O: 08OCT2021 08:57:56  15.9N   95.2W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O:  8OCT2021 08:53:08  15.9N   95.2W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 10OCT2021 137588    15.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O:  8OCT2021 07:22:57  16.2S   73.8W ML=4.0  EMSC   NEAR COAST OF SOUTHERN PERU  

P:  9OCT2021 137766    15.0S   71.0W 4.0-5.4 AAAAA  Central Peru               

 

O:  9OCT2021 03:23:22  17.9N   66.9W Md=3.0  EMSC   PUERTO RICO REGION           

P:  8OCT2021 137596    18.0N   65.0W 3.0-5.3 AABAA  Leeward Islands            

 

 

O: 08OCT2021 20:22:30  18.0N   65.4W ML=3.1  EMSC   PUERTO RICO REGION

O:  8OCT2021 18:28:23  18.0N   65.4W mb=4.6  EMSC   PUERTO RICO REGION           

P:  8OCT2021 137596    18.0N   65.0W 3.0-5.3 AAAAA  Leeward Islands            

 

O:  8OCT2021 16:26:54  24.2S   67.1W mb=4.3  EMSC   SALTA, ARGENTINA             

P:  9OCT2021 137783    24.0S   67.0W 4.0-5.4 AAAAA  Argentina                  

 

O:  8OCT2021 14:09:32  29.6N  116.3W ML=4.1  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P:  8OCT2021 137663    30.2N  114.1W 2.0-4.0 AABAA  SW U.S.A                   

P:  9OCT2021 137665    32.0N  116.3W 2.5-4.7 ACAAA  So. California             

 

 

AFRICA AND EUROPE

 

O: 08OCT2021 23:55:05  28.6N   17.8W ML=4.0  EMSC   CANARY ISLANDS, SPAIN REGION

O:  8OCT2021 12:46:00  28.6N   17.9W ML=3.9  EMSC   CANARY ISLANDS, SPAIN REGION 

 

SOUTHWEST PACIFIC

 

O:  8OCT2021 15:53:38  19.5S  173.5W mb=4.8  EMSC   TONGA                        

P:  7OCT2021 137780    19.0S  173.0W 4.0-5.7 AAAAA  Tonga Islands              

 

O:  8OCT2021 10:51:39  23.6S  179.5E mb=4.1  EMSC   SOUTH OF FIJI ISLANDS        

P:  1OCT2021 137793    23.0S  179.0E 4.0-5.6 CAAAA  Tonga/Fiji                 

 

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

 

OCEAN RIDGES

 

O:  8OCT2021 09:27:58  49.2S  124.8E mb=4.6  EMSC   WESTERN INDIAN-ANTARCTIC RIDGE

P:  6OCT2021 137810    49.0S  122.0E 4.0-5.6 AABAA  So. of Australia           

 

O:  8OCT2021 21:39:26  56.6S   25.6W Mw=5.1  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  4OCT2021 137813    58.0S   26.0W 4.0-5.8 BBAAA  So. Sandwich Islands       

 

O:  8OCT2021 22:55:34  60.2S   24.2W mb=5.0  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  6OCT2021 137813    60.0S   26.0W 4.0-5.6 AAAAA  So. Sandwich Islands       

 

O:  8OCT2021 18:06:13  56.6S   69.3W mb=4.3  EMSC   DRAKE PASSAGE                

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 08OCT2021 17:02:25  35.4S  141.1E ML=3.0  EMSC   VICTORIA, AUSTRALIA

O: 08OCT2021 18:12:08  35.4S  141.1E ML=2.6  EMSC   VICTORIA, AUSTRALIA

O: 08OCT2021 17:20:40  35.5S  141.0E ML=2.8  EMSC   VICTORIA, AUSTRALIA

O: 08OCT2021 18:01:49  35.5S  141.1E ML=2.8  EMSC   VICTORIA, AUSTRALIA

O: 08OCT2021 23:44:33  35.5S  141.1E ML=2.6  EMSC   VICTORIA, AUSTRALIA

O:  8OCT2021 16:47:27  35.4S  141.0E mb=4.9  EMSC   VICTORIA, AUSTRALIA          

 

JAPAN AND KURIL ISLANDS

 

O:  9OCT2021 02:16:19  35.6N  140.2E mb=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  9OCT2021 137656    37.0N  138.0E 3.5-4.9 ABBAA  No. Honshu, Japan          

 

NEIC reported this earthquake of M 4.3 in Southeastern Honshu, Japan was felt with intensity II-IV in the area(s) of Southeastern Honshu, Japan in Chiba and Tokyo.

 

O:  9OCT2021 05:32:00  40.1N  142.1E mb=5.0  EMSC   NEAR EAST COAST OF HONSHU, JAP

O:  9OCT2021 02:47:34  42.4N  142.0E mb=4.6  EMSC   HOKKAIDO, JAPAN REGION       

P:  2OCT2021 137694    42.0N  142.0E 3.5-5.5 CAAAA  Hokkaido, Japan            

 

NEIC reported this earthquake of M 4.6 in Hokkaido, Japan was felt with intensity II-III in the area(s) of Hokkaido, Japan at Sapporo.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  9OCT2021 01:14:24  35.5N  118.4W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P:  8OCT2021 137674    35.6N  118.4W 2.5-4.8 AAAAA  So. California             

 

O:  8OCT2021 23:25:17  38.5N  119.4W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P:  5OCT2021 137635    38.7N  119.7W 2.5-4.5 BAAAA  California/Nevada area     

 

O:  8OCT2021 12:06:09  40.6N  125.1W ML=2.5  EMSC   OFFSHORE NORTHERN CALIFORNIA 

O: 09OCT2021 03:49:56  40.6N  124.9W Md=2.8  EMSC   OFFSHORE NORTHERN CALIFORNIA

O:  8OCT2021 21:39:05  40.7N  124.1W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  5OCT2021 137711    40.3N  124.2W 2.5-4.6 BAAAA  Off Coast of No. Calif     

 

ALASKA

 

O:  9OCT2021 05:59:49  53.2N  166.8W mb=4.4  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  7OCT2021 137733    53.7N  165.3W 3.5-4.9 AAAAA  Fox Islands, Aleutians     

 

O:  9OCT2021 01:14:51  63.0N  148.7W ML=3.0  EMSC   CENTRAL ALASKA               

P:  8OCT2021 137753    63.3N  147.5W 3.2-5.2 AAAAA  Central Alaska             

 

O:  8OCT2021 21:46:35  68.8N  146.3W ML=3.0  EMSC   NORTHERN ALASKA              

P:  5OCT2021 137756    69.0N  144.0W 3.0-4.8 BAAAA  Northern Alaska            

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  8OCT2021 14:23:39  48.3N  122.6W Md=2.3  EMSC   PUGET SOUND REGION, WASHINGTON

P:  9OCT2021 137724    47.5N  121.8W 2.0-4.4 AAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 08OCT2021 08:19:12  31.7N  104.5W ML=2.1  EMSC   WESTERN TEXAS

O: 08OCT2021 12:16:55  31.7N  104.4W ML=2.7  EMSC   WESTERN TEXAS

O: 08OCT2021 13:51:23  31.7N  104.4W ML=2.6  EMSC   WESTERN TEXAS

O: 08OCT2021 15:08:11  31.7N  104.4W ML=2.1  EMSC   WESTERN TEXAS

O:  8OCT2021 07:11:07  31.7N  104.4W ML=2.7  EMSC   WESTERN TEXAS                

P:  4OCT2021 137664    31.2N  104.1W 2.0-4.0 BAAAA  SW U.S.A                   

 

O: 08OCT2021 13:17:49  44.3N  115.0W ML=2.7  EMSC   SOUTHERN IDAHO

O: 08OCT2021 13:22:43  44.3N  115.0W Ml=2.1  EMSC   SOUTHERN IDAHO

O: 09OCT2021 06:01:48  44.3N  115.1W ML=2.6  EMSC   SOUTHERN IDAHO

O: 09OCT2021 06:38:32  44.3N  115.1W ML=3.1  EMSC   SOUTHERN IDAHO

O: 08OCT2021 08:21:32  44.4N  115.2W Ml=2.3  EMSC   SOUTHERN IDAHO

O:  8OCT2021 11:23:33  44.3N  115.2W Ml=2.3  EMSC   SOUTHERN IDAHO               

P:  8OCT2021 137700    44.4N  115.1W 2.0-4.1 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O:  8OCT2021 09:31:20  34.9N   97.7W ML=2.2  EMSC   OKLAHOMA                     

O:  8OCT2021 20:11:01  35.1N   95.5W ML=2.6  EMSC   OKLAHOMA                     

O:  8OCT2021 23:07:40  35.7N   97.2W ML=2.6  EMSC   OKLAHOMA                     

P:  6OCT2021 137680    36.0N   97.0W 2.0-4.2 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 2.6 in Oklahoma was felt with intensity II-III in the area(s) of Oklahoma at Luther.

 

HAWAII

 

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

 

STRONG QUAKE JOLTS TOKYO, JAPAN

 

EARTHQUAKE SUMMARY FOR OCTOBER  7, 2021

 

A series of moderately strong to strong earthquakes occurred at high latitudes today. These included an M 6.1 in the Macquarie Island region south of New Zealand, an M 5.9 near Tokyo, Japan and an M 5.5 in the northern South Sandwich Islands. These may have been promoted by a strong disturbance in the high latitude geomagnetic field yesterday as reported in this summary:

 

"The geomagnetic field saw quiet  conditions today. The AP level was 8.  High latitude geomagnetic field  saw minor storm conditions with AP 23. Enhanced seismicity is likely at higher latitudes with this disturbance in the next several days." (October 6-7, 2021)

 

The strongest earthquake felt in the world today was an M 5.9 in the region of southeastern Honshu, Japan near Tokyo. NEIC reported it was felt with maximum intensity V in Chiba and Tokyo, Japan at Chiba, Ichihara, Funabashi, Narashino, Yotsukaido, Urayasu, Yachiyo, Ichikawa, Kamagaya, Sakura among others. As noted, when an M 5.6 hit north of this in northern Honshu Japan, in the previous issue of this summary, this earthquake was probably promoted by the passage of Typhoon Mindulle east of this several days ago as:

 

"Super Typhoon Mindulle (TS 20W) continued in the area east of Honshu, Japan today with winds up to 70 kts. This system is moving to the northeast and is currently south of eastern Honshu, Japan. It is  expected to track  north reaching areas south of  Honshu, Japan this week. Major seismic enhancement is possible in the area of Central and eastern Honshu in the next several days as this storm passes to the east." (October 2-3, 2021)

 

Today's event is the first within about 150 km of Tokyo, Japan with M>=5.9 in more than an year - since an M 5.9 on June 24, 2020. The last event of larger magnitude in this area was an M 6.2 five years ago on September 23, 2106. Forecast 137661 had expected today's event within this area was likely in early October. This epicenter is located at 103 degrees from the M 7.2 in Guerrero, Mexico of September 8 and, as previous noted in this summary was expected as a result of strong seismic energy concentrated at this distance from that event.

 

O:  7OCT2021 13:41:24  35.5N  140.1E Mw=5.9  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  2OCT2021 137661    35.0N  141.0E 4.0-5.6 BAAAA  Off East Coast Honshu      

 

The strongest earthquake in the world today was an M 6.1 south of New Zealand in

the region of Macquarie Island. This is a remote, but seismically active area and this event was not reported felt. The last earthquake in the Macquarie Island area of M>=6.1 was an M 6.1 about 500 km west of today's epicenter on March 20, 2021. The last earthquake within about 300 km of today's epicenter with M>=6.1 was an M 6.1 on October 13, 1995. The antipode of this epicenter in the Macquarie Island area is in the Reykjanes Ridge, in the north Atlantic south of Iceland. This area often sees enhanced seismicity following strong earthquakes in Macquarie Island.

 

O:  7OCT2021 20:13:01  58.9S  158.4E Mw=6.1  EMSC   MACQUARIE ISLAND REGION      

 

Also at high latitudes, an M 5.5 occurred in the South Sandwich Islands at the opposite longitude to the event in the Macquarie Island region. This continues regional aftershock activity in the South Sandwich Islands following the M 8,1 there on August 12, but is far to the north of most of the aftershocks of that event. Aftershocks of M 5.5-5.7 have hit within about 200 km of today's epicenter in the aftershock sequence on September 5, August 14 and 16, 2021.  A moderate foreshock of M 5.7 to the M 8.1 of August 12 occurred on July 17, 2021, the first such event in the region since 2019. Forecast 137813 had expected today's event was likely within about 50 km around October 2. This epicenter is located at 101 degrees from the M 7.2 in Vanuatu of October 2 and was probably promoted by energy from that source.

 

O:  7OCT2021 17:56:14  55.8S   26.5W mb=5.5  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  2OCT2021 137813    56.0S   27.0W 4.0-5.7 BAAAA  So. Sandwich Islands       

 

An earthquake of M 5.5 shook regions of Myanmar today. NEIC reported maximum intensity V in Myanmar at Monywa Sagang and Alzawi Mizoram, India with lesser shaking of II-III in Pakokku, Myanmar; and in Bangladesh at Dhemsa, Fatekharkui Koka, Chattagam, Coxs Bazar, Dacca and in India at Sichar, Assam and Shillong, Meghalaya. This earthquake occurred within about 30 minutes of local solar midnight and may have been promoted by high tidal stresses which maximize near this hour. This is the strongest earthquake in Myanmar within about 200 km of this epicenter since an M 5.6 on June 21, 2020. That event appears to have been triggered by the total solar eclipse which was visible a day earlier in Myanmar. Stresses associated with the new moon appear to help enhance regional seismicity in this area. At the time of the June, 2020 eclipse, this summary noted:

 

"A moderately strong earthquake also occurred with M 5.7-5.8 today in the region of Mizoram, India near Bangladesh and Myanmar. ... The area had just experienced an annular solar eclipse several hours earlier and an M 5.1 foreshock with that eclipse.

 

The earthquake in India/Myanmar today occurred near the sub-solar point at the time of the total eclipse." (June 21-22, 2020)

 

Forecast 137619 had expected today's event was likely within about 100 km around October 5.

 

O:  7OCT2021 18:28:04  22.3N   94.8E Mw=5.5  EMSC   MYANMAR                      

P:  5OCT2021 137619    23.0N   95.0E 4.0-5.6 AAAAA  Myanmar                    

 

An M 3.7 earthquake in Hawaii continued the eruption of Kilauea today. NEIC reported it was felt with intensity II-III in Hawaii at Pahala, Naalehu, Captain Cook, Holualoa and Kailua Kona. Forecast 137594 expected today's event within the eruptive area was likely around October 6, 2021. This is the strongest earthquake in the U.S. or Canada today. An M 4.5-4.6 hit this area two days ago on October 6 but this is one of the strongest earthquakes to date associated with the current Kilauea eruption.

 

O:  8OCT2021 06:25:04  19.2N  155.5W ML=3.7  EMSC   ISLAND OF HAWAII, HAWAII     

P:  6OCT2021 137594    19.4N  155.4W 3.0-4.8 AAAAA  Hawaii                     

 

The volcanic eruption at La Palma, Canary Islands, Spain continued to spew lava with rivers of lava emptying into the sea today. The strongest earthquake in the current eruption occurred today with M 4.3, also the strongest in the  Canary Islands since an M 5.4 on December 27, 2013 following a similar eruptive phase.

Hundreds have been evacuated and hundreds of buildings destroyed in the eruption, but no deaths have been attributed to the eruption to date. The M 4.3 occurred within about an hour of local solar noon and may have been promoted by high tidal stresses with the new moon which maximize near this hour. Forecast 137308 had expected continuing eruptive earthquakes in the Canary Island at the end of September and early October.

 

O: 07OCT2021 07:18:45  28.6N   17.8W ML=3.5  EMSC   CANARY ISLANDS, SPAIN REGION

O: 07OCT2021 14:26:04  28.6N   17.8W ML=3.8  EMSC   CANARY ISLANDS, SPAIN REGION

O: 07OCT2021 15:49:15  28.6N   17.8W ML=3.6  EMSC   CANARY ISLANDS, SPAIN REGION

O: 08OCT2021 06:49:01  28.6N   17.8W ML=3.8  EMSC   CANARY ISLANDS, SPAIN REGION

O:  7OCT2021 11:17:08  28.7N   17.8W ML=4.3  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 24SEP2021 137308    28.0N   18.0W 3.0-4.5 DAAAA  Canary 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:  7OCT2021 18:28:04  22.3N   94.8E Mw=5.5  EMSC   MYANMAR                      

P:  5OCT2021 137619    23.0N   95.0E 4.0-5.6 AAAAA  Myanmar                    

 

O:  7OCT2021 17:31:17  32.3N   49.7E ML=4.0  EMSC   WESTERN IRAN                 

P:  4OCT2021 137677    31.0N   50.0E 3.8-5.3 BBAAA  So. Iran                   

 

O:  7OCT2021 13:16:23  44.3N   92.5E mb=4.5  EMSC   NORTHERN XINJIANG, CHINA     

P:  7OCT2021 137741    50.0N   88.0E 3.0-4.4 AAAAA  So. Siberia                

 

INDONESIA AND PHILIPPINES

 

O:  7OCT2021 19:17:01   0.4N  126.1E ML=4.1  EMSC   MOLUCCA SEA                  

P:  4OCT2021 137580     1.0S  124.0E 4.0-5.5 BBBAA  Sulawesi area              

 

O:  7OCT2021 11:03:27   2.5N  128.2E ML=4.2  EMSC   HALMAHERA, INDONESIA         

P: 10OCT2021 137556     3.0N  129.0E 4.0-5.4 BAAAA  Halmahera                  

 

O:  7OCT2021 07:01:34   3.8S  136.7E ML=4.2  EMSC   PAPUA, INDONESIA             

P:  5OCT2021 137582     2.0S  135.0E 4.0-5.6 ABBAA  West Irian, PNG            

 

O:  7OCT2021 17:43:01   6.5S  130.2E ML=4.5  EMSC   BANDA SEA                    

O:  7OCT2021 10:38:04   6.8S  132.4E mb=4.3  EMSC   KEP. TANIMBAR REGION, INDONESI

O:  7OCT2021 12:07:18   6.9S  129.6E mb=4.2  EMSC   BANDA SEA                    

P:  8OCT2021 137584     6.0S  130.0E 4.0-5.5 AAAAA  West Irian, PNG            

 

O:  7OCT2021 18:14:53  13.9N  120.7E Mw=5.2  EMSC   MINDORO, PHILIPPINES         

P:  5OCT2021 137598    13.0N  121.0E 3.5-5.2 AAAAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 5.2 in Mindoro, Philippines was felt with intensity II-III in the area(s) of Luzon, Philippines at Mariveles and San Benito, Luzon and Cainta Southern Tagalog, Philippines.

 

 

CENTRAL AND SOUTH AMERICA

 

O: 07OCT2021 14:37:30  10.7N   86.6W ML=4.5  EMSC   OFF COAST OF COSTA RICA

O:  7OCT2021 13:12:30  10.7N   86.7W ML=4.7  EMSC   OFF COAST OF COSTA RICA      

P:  3OCT2021 137602    11.0N   86.0W 3.5-5.3 BAAAA  Nicaragua                  

 

O: 07OCT2021 16:11:43  12.7N   88.3W mb=4.0  EMSC   OFFSHORE EL SALVADOR

O:  7OCT2021 21:45:19  12.0N   89.5W mb=4.4  EMSC   OFF THE COAST OF EL SALVADOR 

P:  3OCT2021 137592    13.0N   90.0W 3.5-5.5 BAAAA  Guatemala                  

 

O:  7OCT2021 08:01:53  12.4N   87.6W ML=4.3  EMSC   NEAR COAST OF NICARAGUA      

P: 10OCT2021 137602    12.0N   87.0W 3.5-5.5 BAAAA  Nicaragua                  

 

O:  7OCT2021 18:49:44  13.9N   92.7W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  7OCT2021 137592    14.0N   91.0W 3.5-5.2 AABAA  Guatemala                  

 

O:  8OCT2021 06:56:23  14.5N   83.1W ML=4.6  EMSC   NICARAGUA                    

P: 10OCT2021 137602    12.0N   87.0W 3.5-5.5 ACCAA  Nicaragua                  

 

O:  7OCT2021 20:43:39  15.3S   72.1W ML=4.0  EMSC   SOUTHERN PERU                

P:  5OCT2021 137766    15.0S   73.0W 4.0-5.6 AAAAA  Central Peru               

 

O: 08OCT2021 04:58:17  15.9N   95.1W ML=4.6  EMSC   OFFSHORE OAXACA, MEXICO

O:  7OCT2021 11:31:46  15.7N   95.5W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  4OCT2021 137589    16.0N   95.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

P: 10OCT2021 137588    15.0N   95.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O:  7OCT2021 17:53:23  16.9N   60.3W ML=4.4  EMSC   GUADELOUPE REGION, LEEWARD ISL

P:  5OCT2021 137595    17.0N   60.0W 3.0-5.0 AAAAA  Leeward Islands            

 

NEIC reported this earthquake of M 4.4 in Guadeloupe was felt with intensity II-III in the area(s) of Guadeloupe at Le Moule Grande-Terre.

 

O:  7OCT2021 07:13:21  17.2N   94.5W ML=4.1  EMSC   OAXACA, MEXICO               

P:  6OCT2021 137588    16.0N   94.0W 3.5-5.2 ABAAA  Chiapas, Mexico            

 

O:  8OCT2021 04:49:48  18.4N   73.5W ML=3.6  EMSC   HAITI REGION                 

P:  7OCT2021 137609    20.0N   74.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O:  8OCT2021 06:43:07  23.9S   66.8W mb=4.5  EMSC   JUJUY, ARGENTINA             

P:  7OCT2021 137783    23.0S   67.0W 4.0-5.4 AAAAA  Argentina                  

P:  9OCT2021 137783    24.0S   67.0W 4.0-5.4 AAAAA  Argentina                  

 

O:  7OCT2021 16:11:56  24.4N  109.0W ML=3.9  EMSC   GULF OF CALIFORNIA           

P: 29SEP2021 137309    24.0N  109.0W 3.5-4.9 CAAAA  Gulf of California         

 

AFRICA AND EUROPE

 

O: 07OCT2021 07:18:45  28.6N   17.8W ML=3.5  EMSC   CANARY ISLANDS, SPAIN REGION

O: 07OCT2021 14:26:04  28.6N   17.8W ML=3.8  EMSC   CANARY ISLANDS, SPAIN REGION

O: 07OCT2021 15:49:15  28.6N   17.8W ML=3.6  EMSC   CANARY ISLANDS, SPAIN REGION

O: 08OCT2021 06:49:01  28.6N   17.8W ML=3.8  EMSC   CANARY ISLANDS, SPAIN REGION

O:  7OCT2021 11:17:08  28.7N   17.8W ML=4.3  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 24SEP2021 137308    28.0N   18.0W 3.0-4.5 DAAAA  Canary Islands             

 

O:  7OCT2021 08:49:54  39.5N   54.7E ML=3.9  EMSC   TURKMENISTAN                 

P:  3OCT2021 137696    40.0N   55.0E 4.0-5.4 BAAAA  Kazakhstan                 

 

O:  7OCT2021 11:01:52  41.1N   48.9E mb=4.0  EMSC   AZERBAIJAN                   

P:  9OCT2021 137658    37.0N   51.0E 3.8-5.2 ACBAA  No. Iran                   

 

SOUTHWEST PACIFIC

 

O:  8OCT2021 04:43:11  17.6S  178.4W mb=4.2  EMSC   FIJI REGION                  

P:  9OCT2021 137779    17.0S  177.0W 4.0-5.7 AAAAA  Tonga Islands              

 

O:  8OCT2021 02:58:00  25.3S  178.8E mb=4.4  EMSC   SOUTH OF FIJI ISLANDS        

O:  8OCT2021 03:25:57  26.0S  179.0W mb=4.3  EMSC   SOUTH OF FIJI ISLANDS        

P:  7OCT2021 137792    25.0S  180.0W 4.0-5.4 AAAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O:  7OCT2021 20:13:01  58.9S  158.4E Mw=6.1  EMSC   MACQUARIE ISLAND REGION      

 

O:  7OCT2021 17:56:14  55.8S   26.5W mb=5.5  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  2OCT2021 137813    56.0S   27.0W 4.0-5.7 BAAAA  So. Sandwich Islands       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

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

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

O:  7OCT2021 16:44:21  31.8N  137.9E mb=4.1  EMSC   IZU ISLANDS, JAPAN REGION    

P:  9OCT2021 137643    33.0N  137.0E 3.5-4.9 ABAAA  Central/So. Honshu Japan   

 

O:  7OCT2021 13:41:24  35.5N  140.1E Mw=5.9  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  2OCT2021 137661    35.0N  141.0E 4.0-5.6 BAAAA  Off East Coast Honshu      

 

O:  7OCT2021 14:24:30  41.3N  142.2E ML=4.1  EMSC   HOKKAIDO, JAPAN REGION       

P:  2OCT2021 137694    42.0N  142.0E 3.5-5.5 BAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  8OCT2021 00:44:54  35.9N  119.9W Md=2.9  EMSC   CENTRAL CALIFORNIA           

P: 10OCT2021 137637    36.1N  120.1W 2.5-4.7 AAAAA  Central California         

 

O:  7OCT2021 18:36:06  37.0N  118.3W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P:  7OCT2021 137632    37.4N  118.6W 2.5-4.8 AAAAA  California/Nevada area     

 

O:  7OCT2021 14:54:14  37.4N  117.1W ml=2.3  EMSC   NEVADA                       

P:  4OCT2021 137631    37.2N  117.3W 2.5-4.6 BAAAA  California/Nevada area     

 

O: 08OCT2021 00:32:02  37.8N  122.1W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O:  7OCT2021 08:21:24  37.8N  122.2W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  5OCT2021 137640    37.8N  122.6W 2.5-4.6 AAAAA  Central California          

 

O:  8OCT2021 00:13:49  38.1N  119.0W ML=3.4  EMSC   CENTRAL CALIFORNIA           

O:  8OCT2021 00:13:49  38.1N  119.0W ML=3.5  ANSS   CENTRAL CALIFORNIA           

P:  7OCT2021 137634    38.0N  118.8W 2.5-4.6 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.5 in Central California was felt with intensity II-III in the area(s) of Central California in Lee Vining, June Lake, Coleville, Yosemite National Park.

 

O: 08OCT2021 00:42:52  38.1N  118.9W Md=2.2  EMSC   CENTRAL CALIFORNIA

O: 07OCT2021 07:34:50  38.5N  119.4W Md=2.2  EMSC   CENTRAL CALIFORNIA

O: 07OCT2021 07:40:53  38.5N  119.4W Md=2.2  EMSC   CENTRAL CALIFORNIA

O:  8OCT2021 01:19:03  38.5N  119.5W Md=2.4  EMSC   CENTRAL CALIFORNIA           

P:  5OCT2021 137635    38.7N  119.7W 2.5-4.5 BAAAA  California/Nevada area     

 

O:  8OCT2021 03:07:36  40.2N  119.8W ml=2.0  EMSC   NEVADA                       

P:  7OCT2021 137710    40.0N  120.9W 2.5-4.6 AAAAA  Northern California        

 

O:  8OCT2021 01:08:50  40.6N  125.0W ML=2.5  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  9OCT2021 137712    40.4N  127.2W 2.5-4.6 AABAA  Off Coast of No. Calif     

 

O:  8OCT2021 03:58:23  41.1N  122.2W Md=2.5  EMSC   NORTHERN CALIFORNIA          

P:  7OCT2021 137710    40.0N  120.9W 2.5-4.6 ABAAA  Northern California        

 

NEIC reported this earthquake of M 2.5 in Northern California was felt with intensity II-III in the area(s) of Northern California in Dunsmuit, McCloud, Montgomery Creek, Lakehead and Montague.

 

O:  7OCT2021 07:53:46  41.4N  126.0W ML=2.7  EMSC   OFF COAST OF NORTHERN CALIFORN

P:  4OCT2021 137712    41.8N  126.9W 2.5-4.8 BAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 2.7 off the coast of northern California  was felt with intensity II-III in the area(s) of the coast of northern California.

 

 

ALASKA

 

O:  8OCT2021 05:01:46  56.7N  141.4W ML=3.0  EMSC   OFF COAST OF SOUTHEASTERN ALAS

P:  8OCT2021 137742    59.0N  136.0W 3.0-4.4 ACCAA  Southeast Alaska           

 

O:  7OCT2021 20:10:59  56.8N  149.4W ml=3.0  EMSC   GULF OF ALASKA               

P:  6OCT2021 137756    55.0N  149.0W 3.0-4.8 AAAAA  Northern Alaska            

 

O:  7OCT2021 13:47:00  62.4N  150.6W ML=3.2  EMSC   CENTRAL ALASKA               

P:  6OCT2021 137752    62.7N  150.6W 3.2-5.4 AAAAA  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: 07OCT2021 08:57:04  31.7N  104.4W ML=2.3  EMSC   WESTERN TEXAS

O: 07OCT2021 10:20:09  31.7N  104.4W ML=2.9  EMSC   WESTERN TEXAS

O: 07OCT2021 10:56:24  31.7N  104.5W ML=2.4  EMSC   WESTERN TEXAS

O:  7OCT2021 15:24:38  31.6N  104.6W ML=2.5  EMSC   WESTERN TEXAS                

P:  4OCT2021 137664    31.2N  104.1W 2.0-4.0 BAAAA  SW U.S.A                   

 

O:  7OCT2021 14:02:47  32.7N  100.7W ML=2.2  EMSC   WESTERN TEXAS                

P:  4OCT2021 137680    35.0N   97.0W 2.0-4.2 BCCAA  Southern Plains            

 

O: 08OCT2021 03:50:17  44.3N  115.0W ML=2.8  EMSC   SOUTHERN IDAHO

O:  8OCT2021 03:14:16  44.3N  115.0W ML=2.9  EMSC   SOUTHERN IDAHO               

P:  8OCT2021 137700    44.4N  115.1W 2.0-4.1 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O:  8OCT2021 02:14:18  34.9N   97.7W mb=2.4  EMSC   OKLAHOMA                     

P:  4OCT2021 137680    35.0N   97.0W 2.0-4.2 BAAAA  Southern Plains            

 

NEIC reported this earthquake of M 2.6 in Oklahoma was felt with intensity II-III in the area(s) of Oklahoma at Bradley.

 

 

HAWAII

 

O:  8OCT2021 06:25:04  19.2N  155.5W ML=3.7  EMSC   ISLAND OF HAWAII, HAWAII     

P:  6OCT2021 137594    19.4N  155.4W 3.0-4.8 AAAAA  Hawaii                     

 

STRONG EARTHQUAKE SHAKES SOUTHERN PAKISTAN WITH NEW MOON

 

EARTHQUAKE SUMMARY FOR OCTOBER  6, 2021

 

The strongest earthquake in the world today occurred as an M 5.9 in Pakistan. NEIC reported slight damage and intensity VIII in Baluchistan, Pakistan at Sibi; VII in Harnai; V in Kot Abdul, Charman; IV in Quetta and Bhag and II-III in Loralai, Multan, Punjab and in Kandahar, Afghanistan. An aftershock of M 4.6 was reported with intensity V in Harnai, and IV in Quetta, Baluchistan, Pakistan. This event caused a mine to collapse and killed at least 20 people while injuring hundreds. Hundreds of buildings in the area collapsed or were damaged with the strongest damage in Harnai, Pakistan in southwestern Pakistan. Video on the web showed extensive damage an much debris on the streets of Harnai and Quetta. This event was probably promoted by a Tropical Cyclone, the strongest in the area in years, that passed over this epicenter several days ago as noted in previous issues of this summary:

 

"Tropical Cyclone Shaheen-Gulab (03B) continued today south of eastern Iran with winds up to 85 kts. It is expected to track to the west areas south of Iran in the next several days. Some enhanced seismicity may occur in southern Iran as this storm is in the area." (October 1-3, 2021)

 

and

 

"Tropical Cyclone Gulab (03B) resumed today south of Pakistan with winds up to 65 kts. It is expected to track to the west areas south of Iran in the next several days. Some enhanced seismicity may occur in southern Iran as this storm is in the area." (October 1-2, 2021)

 

Today's M 5.9 is the strongest earthquake in Pakistan within about 250 km of this epicenter since an M 6.4 on October 28 and again on October 29, 2008.  Forecast 137647 had expected regionally enhanced seismicity in Pakistan was likely around October 6.

 

O: 07OCT2021 00:00:56  30.2N   68.0E mb=4.6  EMSC   PAKISTAN

O:  6OCT2021 22:01:08  30.2N   68.1E Mw=5.9  EMSC   PAKISTAN                     

P:  6OCT2021 137647    36.0N   69.0E 3.8-5.4 ACAAA  Hindu Kush/Pakistan        

 

A series of earthquakes occurred today in connection with the new moon which arrived this morning of October 6 as noted in this and previous issues of this summary as:

 

"The New moon arrived at 11:05 UT on October 6. Longitudes which were at local solar noon at this time are near 15 East while those at local solar midnight are near 165 West longitude. In the west these include most areas of Europe and Africa and in the east the central Aleutians and the Alaska Peninsula, Hawaii and the Tonga-Fiji-Kermadec arc. These area are the most likely to see a strong tidally triggered earthquake in the next week. Other areas may also see tidal triggering. These are most likely to occur near local solar midnight and local solar noon. The possibility of a strong to major earthquake is considered moderate to strong before October 10." (October 3-6, 2021)

 

An earthquake of M 4.9 in Bosnia and Herzegovina was widely felt today. NEIC reported it was felt with maximum intensity V in Makarska Split, Dalmacia, Croatis and IV in Supetar, Split, Jesenice, Mravince, Vranjic, and in Tomisiavgrad, Bosnia and Herzegovina with lesser shaking at Katuni, Breia, and Tucepi, Croatia. This epicenter is at the longitude of maximum tidal stress with this new moon and was probably promoted by high tidal stresses. This is the strongest earthquake within about 200 km of this epicenter since an M 5.4 on November 26, 2019 and prior to that an M 4.9 on November 18, 2013. A series of events about 200 km north of this on March 22, 2020 and December 28-29, 2020 included an M 6.4 which was damaging in the area. Forecast 137695 had expected today's event within about 100 km was likely around October 3. This event is at 102-103 degrees from the M 8.1 in the South Sandwich Islands of August 12 and from the M 7.2 in Haiti of August 14 and was probably promoted by energy from those sources.

 

O:  6OCT2021 19:57:34  43.6N   16.8E mb=4.8  EMSC   CROATIA                      

P:  3OCT2021 137695    43.0N   16.0E 3.0-5.3 BAAAA  Italy                      

 

An M 4.6 was widely felt in North Island, New Zealand today. NEIC reported intensity IV in Taumarunui Manawatu-Wanganui and II-III in Palmerston North, Levin, Kapiti, Upper Hutt and Lower Hutt, North Island, New Zealand.

GEONET reported this earthquake was felt with moderate intensity east of Stratford and in southwestern North Island and northern South Island. Light to moderate intensity was reported throughout much of southern North Island and northern South Island. More than 684 people reported feeling this earthquake with 538 reporting weak shaking; 132 light; 13 moderate and 1 strong intensity. This earthquake occurred within about an hour of local solar noon in an area of the highest tidal stresses with today's new moon and was probably tidally promoted. A similar M 4.6 occurred in this area on November 29, 2020 following an M 4.8 on November 20, 2020, the only such events within about 100 km  of this epicenter of M>=4.6 in the past year. Forecast 137805 had expected today's event in this area was likely around October 5.

 

O:  7OCT2021 00:09:21  39.2S  174.8E mb=4.6  EMSC   NORTH ISLAND OF NEW ZEALAND  

O: 07OCT2021 00:09:22  39.2S  174.8E MS=4.7  GEONET Felt with moderate intensity

P:  5OCT2021 137805    40.0S  174.0E 3.0-4.5 AAAAA  North Island, N.Z.          

 

An earthquake of M 5.4 was also felt in Tonga today. This event was reported by NEIC with intensity IV in Apia, Samoa and in American Samoa with intensity III. Like events in New Zealand and the Unimak Islands, Alaska, this is located near the longitude of maximum tidal stress with the current new moon and was probably promoted by tidal stresses. It is likely an aftershock of an  M 5.7 about 50 km north of this that occurred on October 2, 2021. The only other events in the area of larger magnitude in the past year occurred as an M 6.2 on November 7 and an M 5.9 on October 25, 2020.  Forecast 137779 had expected today's event was likely within about 100 km around October 5.

 

O:  6OCT2021 15:54:20  15.4S  173.3W mb=5.4  ANSS   NE of Hihifo Tonga            

P:  5OCT2021 137779    16.0S  174.0W 4.0-5.6 AAAAA  Tonga Islands              

 

An earthquake of M 5.4 was also felt in the region of Kyushu, Japan today. NEIC reported this was felt with maximum intensity VI in Miyazaki; V in Kagoshima, Japan. This is the strongest earthquake in Kyushu, Japan within about 200 km of this epicenter since an M 6.1 on May 9, 2019 more than two years ago.  Forecast 137650 had expected today's event within about 100 km was likely around October 8.

 

O:  6OCT2021 08:12:55  31.3N  131.3E Mw=5.5  EMSC   KYUSHU, JAPAN                

P:  8OCT2021 137650    31.0N  130.0E 3.5-4.9 AAAAA  Kyushu, Japan area         

 

An unusual earthquake of M 4.2 occurred in eastern Argentina near Formosa today. This event occurred at the maximum of a strong C4.0+ class solar flare and was probably promoted by effects from this flare (SFE) as it occurred near local solar midnight, a prime time for SFE. This is the first earthquake of M>=4.2 within about 300 km of this epicenter in at least 30 years. A deep focus event hit about 300 km west of this with M 5.6 on January 17, 2015, the only such regional event since at least 1990.

 

O:  7OCT2021 02:43:54  25.1S   60.8W ML=4.2  EMSC   FORMOSA, ARGENTINA           

 

The strongest earthquake in the U.S. or Canada today was an M 3.5 south of Mammoth Lakes, California. NEIC reported this earthquake of M 3.5 in Big Pine, California was felt with intensity II-III in the area(s) of Big Pine, California and Merced. The only event within about 50 km of this epicenter in the past year was an M 3.7 on February 14, 2021. An M 3.5 also hit the area a year ago on October 5, 2020. Forecast 137632 had expected today's event in this area was likely around October 7.

 

O:  6OCT2021 14:25:27  37.0N  118.3W Mw=3.5  EMSC   CENTRAL CALIFORNIA           

O: 06OCT2021 15:45:27  37.0N  118.3W Md=2.1  EMSC   CENTRAL CALIFORNIA

P:  7OCT2021 137632    37.4N  118.6W 2.5-4.8 AAAAA  California/Nevada area     

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: 07OCT2021 00:00:56  30.2N   68.0E mb=4.6  EMSC   PAKISTAN

O:  6OCT2021 22:01:08  30.2N   68.1E Mw=5.9  EMSC   PAKISTAN                     

P:  6OCT2021 137647    36.0N   69.0E 3.8-5.4 ACAAA  Hindu Kush/Pakistan        

 

O:  6OCT2021 20:21:43  23.9N  121.5E ML=4.2  EMSC   TAIWAN                       

O:  7OCT2021 04:16:43  24.7N  122.5E ML=4.9  TAI    Hualien, Taiwan              

O:  6OCT2021 20:21:43  23.9N  121.5E ML=4.2  TAI    Hualien, Taiwan              

P:  3OCT2021 137622    25.0N  123.0E 4.0-5.6 BAAAA  Ryukyu Islands             

P:  5OCT2021 137626    24.0N  122.0E 4.0-5.4 AAAAA  Taiwan                      

 

CWB reported the earthquake of M 4.9 was felt with intensity I in Yilan, Hualien, Taipei, Nantou and Taitung Counties, Taiwan.

The event of M 4.2 was felt with intensity IV in Hualien, III in Nantou, II in Taichung, I in Yilan Counties, Taiwan.

 

O:  6OCT2021 14:30:38  52.7N  159.6E mb=4.7  EMSC   OFF EAST COAST OF KAMCHATKA  

P:  8OCT2021 137734    53.0N  159.0E 4.0-5.9 AAAAA  Kamchatka                  

 

INDONESIA AND PHILIPPINES

 

 

O:  6OCT2021 23:40:20   2.6N  128.4E mb=4.5  EMSC   HALMAHERA, INDONESIA         

P: 10OCT2021 137556     3.0N  129.0E 4.0-5.4 BAAAA  Halmahera                  

 

O:  7OCT2021 03:15:11   3.4S  135.4E ML=4.0  EMSC   PAPUA, INDONESIA             

P:  1OCT2021 137582     4.0S  134.0E 4.0-5.4 CAAAA  West Irian, PNG             

P:  5OCT2021 137582     2.0S  135.0E 4.0-5.6 ABAAA  West Irian, PNG            

 

O:  6OCT2021 15:08:38   4.0N  122.9E ML=4.6  EMSC   CELEBES SEA                  

P:  7OCT2021 137558     6.0N  124.0E 4.0-5.4 ABBAA  Mindanao, Philippines      

 

O:  6OCT2021 10:12:27   4.4N  125.9E ML=4.1  EMSC   KEPULAUAN SANGIHE, INDONESIA 

P:  6OCT2021 137556     5.0N  128.0E 4.0-5.4 AABAA  Halmahera                  

 

O:  6OCT2021 22:44:58   5.1S  146.3E mb=4.6  EMSC   EASTERN NEW GUINEA REG., P.N.G

P:  3OCT2021 137569     5.0S  146.0E 4.0-5.4 BAAAA  New Ireland                

 

O:  6OCT2021 16:51:42   5.4N  127.5E ML=4.5  EMSC   PHILIPPINE ISLANDS REGION    

P:  6OCT2021 137556     5.0N  128.0E 4.0-5.4 AAAAA  Halmahera                  

 

O:  7OCT2021 01:05:35   6.9S  105.0E ML=4.8  EMSC   SUNDA STRAIT, INDONESIA      

P: 10OCT2021 137576     7.0S  105.0E 4.0-5.9 BAAAA  So. of Java                

 

O:  6OCT2021 12:15:21   7.0S  129.3E mb=4.2  EMSC   KEPULAUAN BABAR, INDONESIA   

P:  8OCT2021 137584     6.0S  130.0E 4.0-5.5 AAAAA  West Irian, PNG            

 

O:  7OCT2021 05:13:01   8.3S  119.5E mb=4.9  EMSC   FLORES REGION, INDONESIA     

P:  7OCT2021 137581     8.0S  119.0E 4.0-5.4 AAAAA  Sumbawa Island area        

 

O:  6OCT2021 13:38:04   9.6S  124.7E ML=4.4  EMSC   TIMOR REGION                 

P:  9OCT2021 137768    10.0S  124.0E 4.0-5.5 BAAAA  Flores Island area         

 

CENTRAL AND SOUTH AMERICA

 

O:  6OCT2021 08:57:14   2.4S   80.0W ML=4.3  EMSC   NEAR COAST OF ECUADOR        

O:  7OCT2021 05:59:07   2.5S   78.8W mb=4.3  EMSC   ECUADOR                      

P:  7OCT2021 137565     2.0S   80.0W 4.0-5.6 AAAAA  Ecuador                    

 

O:  7OCT2021 01:22:52  14.7N   92.9W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 28SEP2021 137278    14.0N   93.0W 3.5-5.1 CAAAA  Chiapas, Mexico            

 

O:  6OCT2021 11:18:26  15.4N   94.7W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  4OCT2021 137589    16.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

P:  6OCT2021 137588    16.0N   94.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O:  6OCT2021 09:12:16  16.1N   93.8W ML=4.0  EMSC   CHIAPAS, MEXICO              

P:  6OCT2021 137588    16.0N   94.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O:  7OCT2021 04:25:45  16.7N   95.1W ML=4.0  EMSC   OAXACA, MEXICO               

P:  4OCT2021 137589    16.0N   95.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O:  6OCT2021 08:55:07  18.2N  101.7W ML=4.1  EMSC   GUERRERO, MEXICO             

P:  7OCT2021 137601    19.0N  102.0W 3.5-5.4 AAAAA  Michoacan, Mexico          

 

O: 07OCT2021 05:01:25  18.5N   73.6W ML=3.3  EMSC   HAITI REGION

O:  6OCT2021 07:38:34  18.4N   73.7W ML=3.2  EMSC   HAITI REGION                 

P:  7OCT2021 137609    20.0N   74.0W 3.4-4.9 ABAAA  Puerto Rico                 

 

O:  6OCT2021 19:05:29  19.3N  105.0W ML=3.4  EMSC   OFFSHORE JALISCO, MEXICO     

P:  7OCT2021 137601    19.0N  104.0W 3.5-5.2 AAAAA  Michoacan, Mexico          

 

O:  6OCT2021 18:02:26  21.5S   69.0W mb=4.3  EMSC   ANTOFAGASTA, CHILE           

P:  5OCT2021 137785    21.0S   69.0W 4.0-5.6 AAAAA  Coast No. Chile            

 

O:  7OCT2021 02:43:54  25.1S   60.8W ML=4.2  EMSC   FORMOSA, ARGENTINA           

 

O:  6OCT2021 23:38:09  25.3S   64.5W mb=5.0  EMSC   SALTA, ARGENTINA             

P:  3OCT2021 137783    23.0S   66.0W 4.0-5.6 BCBAA  Argentina                  

P:  9OCT2021 137783    24.0S   67.0W 4.0-5.4 BBCAA  Argentina                  

 

NEIC reported this earthquake of M 5.0 in Argentina was felt with intensity II-III in the area(s) of Argentina in Salta and Tucuman.

 

AFRICA AND EUROPE

 

O: 06OCT2021 18:56:43  28.6N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION

O: 06OCT2021 22:42:04  28.6N   17.8W ML=3.9  EMSC   CANARY ISLANDS, SPAIN REGION

O:  6OCT2021 07:25:47  28.6N   17.8W ML=3.8  EMSC   CANARY ISLANDS, SPAIN REGION 

 

SOUTHWEST PACIFIC

 

O:  6OCT2021 15:54:20  15.4S  173.3W mb=5.4  ANSS   NE of Hihifo Tonga           

P:  5OCT2021 137779    16.0S  174.0W 4.0-5.6 AAAAA  Tonga Islands              

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  7OCT2021 00:09:21  39.2S  174.8E mb=4.6  EMSC   NORTH ISLAND OF NEW ZEALAND  

O: 07OCT2021 00:09:22  39.2S  174.8E MS=4.7  GEONET Felt with moderate intensity

P:  5OCT2021 137805    40.0S  174.0E 3.0-4.5 AAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O:  6OCT2021 08:12:55  31.3N  131.3E Mw=5.5  EMSC   KYUSHU, JAPAN                

P:  8OCT2021 137650    31.0N  130.0E 3.5-4.9 AAAAA  Kyushu, Japan area         

 

O:  7OCT2021 03:55:36  47.8N  152.0E mb=4.0  EMSC   KURIL ISLANDS                

P:  8OCT2021 137721    46.0N  153.0E 3.5-5.6 ABAAA  So. Kurils                 

 

O:  6OCT2021 13:06:13  49.7N  155.8E mb=5.0  EMSC   KURIL ISLANDS                 

P:  5OCT2021 137704    49.0N  156.0E 3.5-5.4 AAAAA  NE Pacific                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 06OCT2021 09:54:08  30.8N  114.3W ML=3.8  EMSC   GULF OF CALIFORNIA

O:  6OCT2021 09:25:47  30.8N  114.4W ML=3.7  EMSC   GULF OF CALIFORNIA           

P:  8OCT2021 137663    30.2N  114.1W 2.0-4.0 AAAAA  SW U.S.A                   

 

O:  6OCT2021 07:19:39  31.5N  115.6W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO      

O:  6OCT2021 20:20:56  32.8N  115.5W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P:  7OCT2021 137666    32.4N  115.8W 2.5-4.8 AAAAA  So. California             

 

O:  6OCT2021 14:25:27  37.0N  118.3W Mw=3.5  EMSC   CENTRAL CALIFORNIA           

O: 06OCT2021 15:45:27  37.0N  118.3W Md=2.1  EMSC   CENTRAL CALIFORNIA

P:  7OCT2021 137632    37.4N  118.6W 2.5-4.8 AAAAA  California/Nevada area     

 

O:  6OCT2021 20:59:32  38.2N  118.0W ml=2.1  EMSC   NEVADA                       

P:  7OCT2021 137634    38.0N  118.8W 2.5-4.6 AAAAA  California/Nevada area      

 

O:  7OCT2021 06:55:11  39.5N  123.0W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P:  4OCT2021 137641    38.8N  122.8W 2.5-4.7 BAAAA  Central California         

 

O:  7OCT2021 02:18:48  40.6N  122.4W Md=2.6  EMSC   NORTHERN CALIFORNIA          

P:  7OCT2021 137710    40.0N  120.9W 2.5-4.6 AAAAA  Northern California        

 

NEIC reported this earthquake of M 2.6 in Northern California was felt with intensity II-III in the area(s) of Northern California at Shasta Lake and Redding.

 

O:  6OCT2021 07:57:55  41.0N  121.7W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  3OCT2021 137710    40.3N  121.2W 2.5-4.8 BAAAA  Northern California        

 

 

ALASKA

 

O:  6OCT2021 09:01:35  56.3N  156.5W ML=3.1  EMSC   ALASKA PENINSULA             

P: 29SEP2021 137444    54.8N  158.7W 3.5-5.0 CBBAA  Alaska Peninsula           

 

O:  6OCT2021 19:55:29  59.7N  152.8W ML=3.1  EMSC   SOUTHERN ALASKA              

P:  5OCT2021 137749    60.2N  151.7W 3.2-5.3 AAAAA  Central Alaska             

 

O:  7OCT2021 06:02:57  60.1N  141.4W ML=3.4  EMSC   SOUTHERN ALASKA              

P: 28SEP2021 137470    61.0N  140.0W 3.2-4.9 CAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  6OCT2021 14:15:25  44.9N  125.1W Ml=2.0  EMSC   OFFSHORE OREGON               

 

ROCKY MOUNTAINS REGION

 

O: 06OCT2021 13:28:01  31.6N  104.5W ML=2.2  EMSC   WESTERN TEXAS

O: 06OCT2021 09:09:15  31.7N  103.9W ML=2.0  EMSC   WESTERN TEXAS

O: 06OCT2021 15:48:07  31.7N  104.3W ML=2.4  EMSC   WESTERN TEXAS

O: 07OCT2021 06:50:44  31.7N  104.4W ML=2.5  EMSC   WESTERN TEXAS

O:  6OCT2021 07:42:26  31.6N  104.3W ML=2.4  EMSC   WESTERN TEXAS                

P:  4OCT2021 137664    31.2N  104.1W 2.0-4.0 AAAAA  SW U.S.A                   

 

O:  6OCT2021 23:35:03  44.3N  115.1W ML=2.6  EMSC   SOUTHERN IDAHO               

O: 06OCT2021 20:57:30  44.4N  115.2W Ml=2.9  EMSC   SOUTHERN IDAHO

P:  8OCT2021 137700    44.4N  115.1W 2.0-4.1 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.

 

HAWAII

 

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

 

MODERATE QUAKE SHAKES NORTHERN HONSHU, JAPAN WITH TYPHOON MINDULLE

 

EARTHQUAKE SUMMARY FOR OCTOBER  5, 2021

 

The strongest earthquake in the world today was an M 5.6 off the east coast of northern Honshu, Japan. NEIC reported it was felt with maximun intensity VII in Miyako, Iwate and VI in Iwate and Tono with V in Nachinohe, Aomori; IV in Misawa, Morioka, Kesennuma, and III in Aomori, Sendai and Namie, Fukushima. This earthquake may have been promoted by stresses from Typhoon Mindulle which passed over this epicenter two days ago as reported in previous issues of this summary:

 

"Super Typhoon Mindulle (TS 20W) continued in the area east of Honshu, Japan today with winds up to 70 kts. This system is moving to the northeast and is currently south of eastern Honshu, Japan. It is  expected to track  north reaching areas south of  Honshu, Japan this week. Major seismic enhancement is possible in the area of Central and eastern Honshu in the next several days as this storm passes to the east." (October 2-3, 2021)

 

Today's event is the strongest within about 200 km of this epicenter in the current year. An M 6.3 hit the are about 100 km to the north on December 20, 2020, the last such event in the region. Forecast 137408 had expected today's activity within about 25 km at the end of September or in early October.

 

O: 05OCT2021 22:33:30  40.0N  142.2E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 05OCT2021 14:22:02  40.4N  143.9E mb=4.5  EMSC   OFF EAST COAST OF HONSHU, JAPAN

O:  5OCT2021 17:46:02  40.0N  142.2E Mw=5.6  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 28SEP2021 137408    40.0N  142.0E 3.5-5.5 CAAAA  Hokkaido, Japan            

 

An earthquake of M 5.4 also occurred in the Ryukyu Islands of Japan today.

NEIC reported these earthquakes of M 5.4 and an aftershock of 5.2 in the Ryukyu Islands, Japan were felt with intensity II-III in the area(s) of the Ryukyu Islands, Japan at Okinawa. This is the strongest earthquake in the Ryukyu Islands in more than a year. This shallow focus earthquake is the strongest in the Ryukyu Islands within about 150 km of this epicenter since an M 5.4 on August 8, 2012. Forecast 137622 had expected this activity around October 3.

This activity is at 142 degrees from the M 8.1 in the South Sandwich Islands of August 12 and may have been promoted by energy from that source.

 

O: 05OCT2021 17:30:28  25.8N  125.1E Mw=5.4  EMSC   SOUTHWESTERN RYUKYU ISL., JAPAN

O:  5OCT2021 18:03:43  25.6N  125.1E Mw=5.2  EMSC   SOUTHWESTERN RYUKYU ISL., JAPA

P:  3OCT2021 137622    25.0N  123.0E 4.0-5.6 AABAA  Ryukyu Islands             

 

The strongest earthquake in the U.S. or Canada today was an M 4.5-4.6 in the current eruption at Kilauea, Hawaii. NEIC reported this event was felt with intensity IV in Hawaii at Hawaii National Park, Pahala, Volcano, with III in Naalehu, Captain Cook, Pahoa, Mountain View, Hilo, Kurtistown and Holualoa.

This activity was apparently triggered by the new moon. It occurred near the maximum stress associated with the current new moon as described in previous issues of this summary as:

 

"The New moon will arrive at 11:05 UT on October 6. Longitudes which are at local solar noon at this time are near 15 East while those at local solar midnight are near 165 West longitude. In the west these include most areas of Europe and Africa and in the east the central Aleutians and the Alaska Peninsula, Hawaii and the Tonga-Fiji-Kermadec arc. These area are the most likely to see a strong tidally triggered earthquake in the next week. Other areas may also see tidal triggering. These are most likely to occur near local solar midnight and local solar noon. The possibility of a strong to major earthquake is considered moderate to strong before October 10." (October 3-5, 2021)

 

The last earthquake in the area of Kilauea, Hawaii with greater magnitude than M 4.6 was an M 5.5 on March 13, 2019. An M 4.5 also occurred at exactly the same depth (32.7 km) as today's event on June 18, 2021. Forecast 137594 had expected today's event, part of the current eruption of Kilauea, around October 6.

 

O: 06OCT2021 06:39:23  19.2N  155.5W ML=3.4  EMSC   ISLAND OF HAWAII, HAWAII

O:  6OCT2021 06:36:55  19.3N  155.5W ML=4.5  EMSC   ISLAND OF HAWAII, HAWAII     

O:  6OCT2021 06:36:55  19.3N  155.5W ML=4.6  ANSS   ISLAND OF HAWAII, HAWAII     

P:  6OCT2021 137594    19.4N  155.4W 3.0-4.8 AAAAA  Hawaii                     

 

Elsewhere in the U.S. and Canada a series of moderate earthquakes occurred in the Unimak Island region of Alaska today with M 3.7, 4.4 and 4.5. These may be aftershocks of an M 5.1 event on September 9, 2021 with the last new moon.    Forecast 137743 had expected today's events within about 100 km of these epicenters in the Unimak Island area was likely around October 7.

 

O: 06OCT2021 03:42:21  53.5N  163.4W mb=4.5  EMSC   UNIMAK ISLAND REGION, ALASKA

O: 06OCT2021 05:21:53  53.7N  163.6W ml=3.7  EMSC   UNIMAK ISLAND REGION, ALASKA

O:  6OCT2021 06:42:48  53.4N  163.5W mb=4.4  EMSC   UNIMAK ISLAND REGION, ALASKA 

P:  7OCT2021 137743    54.0N  164.9W 3.5-4.9 AAAAA  Unimak Islands, Aleutians   

 

A set of unusual earthquakes in northwestern Canada also occurred today. These included an M 3.9 near Grande Prairie, Alberta; an M 3.3 in the Northern Yukon Territory, Canada and an M 3.7-4.0 near Beaver Creek, Yukon Territory about 500 km to the southwest of this event. Forecasts 137445, 137756 and 137470 had expected this activity in late September or early October. None of these events were reported felt.

 

O:  5OCT2021 19:16:13  54.5N  118.5W ML=3.9  EMSC   ALBERTA, CANADA              

O: 05OCT2021 19:16:13  54.5N  118.5W MB=3.9  ECAN Grande Prairie, AB   

P: 30SEP2021 137445    56.0N  120.0W 2.0-4.0 BBAAA  Alberta                    

 

O: 05OCT2021 07:28:47  66.0N  135.1W MB=3.3  ECAN Fort McPherson, NT   

O:  5OCT2021 07:28:47  66.0N  135.1W ML=3.3  EMSC   NORTHERN YUKON TERRITORY, CANA

P:  9OCT2021 137756    66.9N  135.8W 3.0-4.8 BAAAA  Northern Alaska            

 

NEIC reported the earthquake of M 3.9-4.0 in East-central Alaska was felt with intensity II-III in the area(s) of East-central Alaska at Palmer.

 

O: 05OCT2021 18:24:30  62.2N  141.6W MB=4.0  ECAN Beaver Creek, YT   

O:  5OCT2021 18:24:29  62.2N  141.6W ML=3.7  EMSC   CENTRAL ALASKA               

P: 28SEP2021 137470    61.0N  140.0W 3.2-4.9 CBAAA  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:  5OCT2021 23:27:56  30.4N   94.8E mb=4.5  EMSC   EASTERN XIZANG               

P:  9OCT2021 137688    33.0N   92.0E 3.8-5.2 BCBAA  Xizang                     

 

O:  5OCT2021 07:59:57  36.9N   66.7E Mw=5.1  EMSC   CENTRAL AFGHANISTAN          

P:  6OCT2021 137647    36.0N   69.0E 3.8-5.4 AABAA  Hindu Kush/Pakistan        

 

NEIC reported this earthquake of M  5.1 in Afghanistan was felt with intensity IV in the area(s) of  Afghanistan at Mazar-e Sharif Bain; IV in Sar0e Pul, Albak, Samangan and II-III in Shebergan, and in Uzbekistan at Termiz, Qarshi, Tashkent; in Dushanbe, Tajikistan and Turkmenabat, Turkmenistan.

 

INDONESIA AND PHILIPPINES

 

O:  5OCT2021 08:51:07   2.8N  122.3E mb=4.5  EMSC   CELEBES SEA                  

P:  4OCT2021 137549     1.0N  122.0E 4.0-5.4 ABAAA  Celebes Sea                 

 

O:  5OCT2021 16:10:37   4.1S  133.3E mb=4.4  EMSC   NEAR S COAST OF PAPUA, INDONES

P:  1OCT2021 137582     4.0S  134.0E 4.0-5.4 BAAAA  West Irian, PNG            

 

O:  5OCT2021 14:45:49   4.9N  127.2E mb=4.4  EMSC   KEPULAUAN TALAUD, INDONESIA  

P:  6OCT2021 137556     5.0N  128.0E 4.0-5.4 AAAAA  Halmahera                  

 

O:  5OCT2021 20:59:35   5.8S  131.0E mb=4.6  EMSC   BANDA SEA                    

P:  5OCT2021 137584     5.0S  130.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O:  6OCT2021 06:20:02   6.1S  103.0E ML=4.5  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P:  1OCT2021 137578     6.0S  102.0E 4.0-5.4 BAAAA  So. of Sumatera            

 

O:  5OCT2021 20:45:28   7.9S  128.5E ML=4.5  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P:  4OCT2021 137562     7.0S  128.0E 4.0-5.6 AAAAA  Banda Sea                  

 

O:  5OCT2021 11:00:25   8.1S  118.1E mb=4.1  EMSC   SUMBAWA REGION, INDONESIA    

P:  7OCT2021 137581     8.0S  119.0E 4.0-5.4 AAAAA  Sumbawa Island area        

 

 

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

 

CENTRAL AND SOUTH AMERICA

 

O:  5OCT2021 19:37:47   6.9N   73.0W mb=4.8  EMSC   NORTHERN COLOMBIA            

P:  2OCT2021 137553     7.0N   73.0W 4.0-5.5 BAAAA  Colombia                    

 

NEIC reported this earthquake of M 4.8 in Colombia was felt with intensity II-III in the area(s) of Colombia at Piedecuesta, Santander.

 

O:  6OCT2021 01:02:30   9.5N   84.9W ML=4.1  EMSC   COSTA RICA                   

P:  2OCT2021 137554     9.0N   85.0W 3.5-4.9 BAAAA  Costa Rica                 

 

O:  6OCT2021 01:34:28  15.7N   97.4W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  6OCT2021 137605    15.0N   97.0W 3.5-5.6 AAAAA  Oaxaca, Mexico             

 

O:  5OCT2021 10:28:27  16.2N   95.0W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P:  4OCT2021 137589    16.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O:  5OCT2021 08:56:32  18.5N   71.2W ML=3.1  EMSC   DOMINICAN REPUBLIC           

P:  6OCT2021 137609    19.0N   71.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O:  6OCT2021 04:01:56  18.8N   67.4W Md=3.1  EMSC   PUERTO RICO REGION           

P:  5OCT2021 137607    19.0N   67.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O: 05OCT2021 09:55:54  18.7N   73.5W ML=3.5  EMSC   HAITI REGION

O: 05OCT2021 10:31:14  18.7N   73.6W ML=3.4  EMSC   HAITI REGION

O:  6OCT2021 01:34:11  19.9N   72.9W ML=3.2  EMSC   HAITI REGION                 

P:  7OCT2021 137609    20.0N   74.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O:  5OCT2021 09:23:15  20.5S   70.0W mb=4.2  EMSC   TARAPACA, CHILE              

P:  5OCT2021 137790    20.0S   71.0W 4.0-5.8 AAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 4.2 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile in Iquique, Tarapaca.

 

O:  6OCT2021 01:55:33  45.7S   77.7W mb=4.2  EMSC   OFF COAST OF AISEN, CHILE    

P: 10OCT2021 137804    43.0S   83.0W 4.0-5.9 BCCAA  Chile Rise                 

 

 

AFRICA AND EUROPE

 

O:  5OCT2021 07:54:08  36.5N   27.2E ML=4.1  EMSC   DODECANESE IS.-TURKEY BORDER R

P:  6OCT2021 137629    36.0N   27.0E 3.0-5.1 AAAAA  Aegean Sea                 

 

O:  5OCT2021 18:52:11  36.9N    9.0E mb=4.2  EMSC   TUNISIA                      

P:  3OCT2021 137651    39.0N   14.0E 3.0-4.6 ACCAA  Mediterranean/Sicily       

 

O:  5OCT2021 16:14:10  63.9N   22.2W ML=3.3  EMSC   ICELAND REGION               

P:  2OCT2021 137754    64.0N   25.0W 3.0-4.6 BABAA  Iceland area               

 

O: 05OCT2021 07:19:36  28.6N   17.8W ML=3.5  EMSC   CANARY ISLANDS, SPAIN REGION

O: 05OCT2021 08:29:25  28.6N   17.9W ML=3.6  EMSC   CANARY ISLANDS, SPAIN REGION

O: 05OCT2021 09:31:09  28.6N   17.8W ML=3.5  EMSC   CANARY ISLANDS, SPAIN REGION

O: 05OCT2021 09:31:09  28.6N   17.8W ML=3.5  EMSC   CANARY ISLANDS, SPAIN REGION

O: 05OCT2021 12:14:47  28.6N   17.8W ML=3.5  EMSC   CANARY ISLANDS, SPAIN REGION

O: 05OCT2021 13:57:06  28.6N   17.8W ML=3.6  EMSC   CANARY ISLANDS, SPAIN REGION

O:  5OCT2021 07:10:36  28.6N   17.8W ML=3.4  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 24SEP2021 137308    28.0N   18.0W 3.0-4.5 CAAAA  Canary Islands             

 

SOUTHWEST PACIFIC

 

O:  5OCT2021 11:46:01  10.2S  161.6E mb=4.7  EMSC   SOLOMON ISLANDS              

P:  3OCT2021 137771    10.0S  160.0E 4.0-5.5 AAAAA  No. of Santa Cruz Islands  

P:  9OCT2021 137771    10.0S  162.0E 4.0-5.4 BAAAA  No. of Santa Cruz Islands  

 

O:  5OCT2021 16:08:06  17.9S  178.4W mb=4.5  EMSC   FIJI REGION                  

P:  9OCT2021 137779    17.0S  177.0W 4.0-5.7 BAAAA  Tonga Islands               

 

OCEAN RIDGES

 

O:  5OCT2021 09:07:32  59.1S   23.0W mb=5.0  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  6OCT2021 137813    60.0S   26.0W 4.0-5.6 AABAA  So. Sandwich Islands       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  6OCT2021 01:01:02  32.2S  179.7E ML=4.2  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  4OCT2021 137803    32.0S  179.0E 4.0-5.5 AAAAA  So. Kermadec Islands       

 

O:  6OCT2021 03:34:35  37.8S  176.5E ML=4.0  EMSC   NORTH ISLAND OF NEW ZEALAND  

P:  2OCT2021 137801    38.0S  178.0E 3.0-4.5 BAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 05OCT2021 17:30:28  25.8N  125.1E Mw=5.4  EMSC   SOUTHWESTERN RYUKYU ISL., JAPAN

O:  5OCT2021 18:03:43  25.6N  125.1E Mw=5.2  EMSC   SOUTHWESTERN RYUKYU ISL., JAPA

P:  3OCT2021 137622    25.0N  123.0E 4.0-5.6 AABAA  Ryukyu Islands             

 

O: 05OCT2021 22:33:30  40.0N  142.2E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 05OCT2021 14:22:02  40.4N  143.9E mb=4.5  EMSC   OFF EAST COAST OF HONSHU, JAPAN

O:  5OCT2021 17:46:02  40.0N  142.2E Mw=5.6  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 28SEP2021 137408    40.0N  142.0E 3.5-5.5 CAAAA  Hokkaido, Japan            

 

O:  6OCT2021 02:55:30  43.2N  146.8E mb=4.5  EMSC   KURIL ISLANDS                

P:  7OCT2021 137694    43.0N  146.0E 3.5-5.7 AAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 05OCT2021 14:05:32  30.6N  114.2W ML=3.8  EMSC   GULF OF CALIFORNIA

O: 05OCT2021 14:45:39  30.6N  114.0W ML=3.6  EMSC   GULF OF CALIFORNIA

O: 05OCT2021 21:26:20  31.5N  114.5W ML=3.3  EMSC   GULF OF CALIFORNIA

O:  5OCT2021 19:38:00  30.5N  114.2W ML=3.6  EMSC   GULF OF CALIFORNIA           

P:  8OCT2021 137663    30.2N  114.1W 2.0-4.0 BAAAA  SW U.S.A                   

 

O:  5OCT2021 17:52:14  33.1N  115.6W Ml=2.7  EMSC   SOUTHERN CALIFORNIA          

O:  5OCT2021 15:32:23  33.8N  116.1W ML=2.7  EMSC   SOUTHERN CALIFORNIA          

O:  5OCT2021 15:32:23  33.8N  116.1W ML=2.9  ANSS   SOUTHERN CALIFORNIA          

P:  6OCT2021 137667    33.0N  115.9W 2.5-4.8 AAAAA  So. California             

 

NEIC reported the earthquake of M 2.9 in  Southern California was felt with intensity II-III in the area(s) of  Southern California at Indio, Palm Desert and Thermal.

 

NEIC reported the earthquake of M 2.7 in Southern California was felt with intensity II-III in the area(s) of Southern California at Brawley.

 

O:  5OCT2021 10:53:49  36.0N  117.7W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P:  7OCT2021 137675    35.9N  117.7W 2.5-4.8 AAAAA  So. California              

 

O: 06OCT2021 03:08:46  36.7N  121.3W Md=2.1  EMSC   CENTRAL CALIFORNIA

O:  5OCT2021 20:13:06  36.7N  121.3W Md=2.4  EMSC   CENTRAL CALIFORNIA           

P:  8OCT2021 137638    36.4N  121.0W 2.5-4.7 BAAAA  Central California         

 

O: 05OCT2021 11:15:00  37.4N  117.1W ml=2.3  EMSC   NEVADA

O: 05OCT2021 13:50:29  37.4N  117.1W ml=2.3  EMSC   NEVADA

O: 05OCT2021 18:02:19  37.4N  117.1W ml=2.4  EMSC   NEVADA

O:  5OCT2021 09:32:58  37.4N  117.1W ml=2.3  EMSC   NEVADA                       

P:  4OCT2021 137631    37.2N  117.3W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 05OCT2021 22:49:16  38.5N  119.4W Md=2.1  EMSC   CENTRAL CALIFORNIA

O: 06OCT2021 06:51:49  38.6N  119.2W ml=2.2  EMSC   NEVADA

O:  6OCT2021 06:58:31  38.1N  119.0W ml=2.0  EMSC   CENTRAL CALIFORNIA           

P:  7OCT2021 137634    38.0N  118.8W 2.5-4.6 AAAAA  California/Nevada area     

 

O:  5OCT2021 07:29:52  38.2N  117.8W ml=2.1  EMSC   NEVADA                       

O:  5OCT2021 22:44:39  38.2N  119.5W ml=2.2  EMSC   CENTRAL CALIFORNIA           

P:  5OCT2021 137635    38.7N  119.7W 2.5-4.5 AAAAA  California/Nevada area     

 

O:  5OCT2021 15:54:38  40.5N  125.0W Ml=3.2  EMSC   OFFSHORE NORTHERN CALIFORNIA 

O: 05OCT2021 18:21:53  40.5N  124.4W Md=2.4  EMSC   OFFSHORE NORTHERN CALIFORNIA

P:  5OCT2021 137711    40.3N  124.2W 2.5-4.6 AAAAA  Off Coast of No. Calif     

P: 29SEP2021 137425    40.5N  125.8W 2.5-4.6 CAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.2 off the coast of Northern California  was felt with intensity II-III in the area(s) of Northern California at Eureka.

 

ALASKA

 

 

O:  5OCT2021 14:42:30  51.1N  178.2W ML=3.1  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P:  7OCT2021 137728    51.8N  178.0W 3.5-5.1 AAAAA  Andreanoff Isls, Aleutians 

 

O: 06OCT2021 03:42:21  53.5N  163.4W mb=4.5  EMSC   UNIMAK ISLAND REGION, ALASKA

O: 06OCT2021 05:21:53  53.7N  163.6W ml=3.7  EMSC   UNIMAK ISLAND REGION, ALASKA

O:  6OCT2021 06:42:48  53.4N  163.5W mb=4.4  EMSC   UNIMAK ISLAND REGION, ALASKA 

P:  7OCT2021 137743    54.0N  164.9W 3.5-4.9 AAAAA  Unimak Islands, Aleutians  

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  5OCT2021 07:20:22  47.2N  122.1W Md=2.2  EMSC   PUGET SOUND REGION, WASHINGTON

P:  2OCT2021 137724    46.9N  122.0W 2.0-4.5 BAAAA  Washington state, U.S.     

 

O:  5OCT2021 13:49:19  47.7N  120.0W Md=2.0  EMSC   WASHINGTON                   

P:  9OCT2021 137724    47.7N  120.3W 2.0-4.2 BAAAA  Washington state, U.S.     

 

O:  5OCT2021 19:16:13  54.5N  118.5W ML=3.9  EMSC   ALBERTA, CANADA               

O: 05OCT2021 19:16:13  54.5N  118.5W MB=3.9  ECAN Grande Prairie, AB   

P: 30SEP2021 137445    56.0N  120.0W 2.0-4.0 BBAAA  Alberta                    

 

O: 05OCT2021 07:28:47  66.0N  135.1W MB=3.3  ECAN Fort McPherson, NT   

O:  5OCT2021 07:28:47  66.0N  135.1W ML=3.3  EMSC   NORTHERN YUKON TERRITORY, CANA

P:  9OCT2021 137756    66.9N  135.8W 3.0-4.8 BAAAA  Northern Alaska            

 

O: 05OCT2021 18:24:30  62.2N  141.6W MB=4.0  ECAN Beaver Creek, YT   

O:  5OCT2021 18:24:29  62.2N  141.6W ML=3.7  EMSC   CENTRAL ALASKA               

P: 28SEP2021 137470    61.0N  140.0W 3.2-4.9 CBAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.9-4.0 in East-central Alaska was felt with intensity II-III in the area(s) of East-central Alaska at Palmer.

 

O:  5OCT2021 18:45:30  48.9N  128.8W MB=3.3  ECAN Port Alice, BC                 

P:  3OCT2021 137730    50.0N  128.0W 3.0-5.2 ABAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 05OCT2021 11:55:04  31.8N  103.8W ML=2.6  EMSC   WESTERN TEXAS

O:  6OCT2021 01:46:47  31.7N  104.4W ML=2.7  EMSC   WESTERN TEXAS                

P:  4OCT2021 137664    31.2N  104.1W 2.0-4.0 AAAAA  SW U.S.A                   

 

O: 05OCT2021 19:12:30  44.4N  115.2W Ml=2.4  EMSC   SOUTHERN IDAHO

O:  5OCT2021 12:39:01  44.4N  115.2W Ml=2.2  EMSC   SOUTHERN IDAHO               

P:  4OCT2021 137700    44.4N  115.1W 2.0-4.1 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O:  5OCT2021 08:13:07  36.5N   89.6W Md=2.1  EMSC   SOUTHEASTERN MISSOURI         

P:  4OCT2021 137654    36.7N   89.7W 2.0-4.2 AAAAA  New Madrid area            

 

HAWAII

 

O: 06OCT2021 06:39:23  19.2N  155.5W ML=3.4  EMSC   ISLAND OF HAWAII, HAWAII

O:  6OCT2021 06:36:55  19.3N  155.5W ML=4.5  EMSC   ISLAND OF HAWAII, HAWAII     

P:  6OCT2021 137594    19.4N  155.4W 3.0-4.8 AAAAA  Hawaii                     

EUROPE ACTIVE NEAR NEW MOON

 

EARTHQUAKE SUMMARY FOR OCTOBER  4, 2021

 

A series of unusual to moderate earthquakes occurred in Europe today with the

coming New Moon. The largest of these was an M 4.3 near the Swiss-French-Italian

border, but other unusual events occurred in Turkey and the Dodecanese Islands, Greece and the eruption of the volcanic eruption in La Palma, Canary Islands intensified.

 

An unusually large M 4.3 earthquake shook the region of Switzerland and Italy today. NEIC reported maximum intensity shaking in Switzerland at Sion Wallis; III in Italy at Aosta Valle d Aosta, Issogne, in France at Bassens Rhone-Alpes and in Karisfeld, Bayern Germany. This event may have been promoted by high tidal stresses associated with tomorrow's new moon as previously noted in this summary:

 

"The New moon will arrive at 11:05 UT on October 6. Longitudes which are at local solar noon at this time are near 15 East while those at local solar midnight are near 165 West longitude. In the west these include most areas of Europe and Africa and in the east the central Aleutians and the Alaska Peninsula and the Tonga-Fiji-Kermadec arc. These area are the most likely to see a strong tidally triggered earthquake in the next week. Other areas may also see tidal triggering. These are most likely to occur near local solar midnight and local solar noon. The possibility of a strong to major earthquake is considered moderate to strong before October 10." (October 4-5, 2021)

 

The last earthquake of M>=4.3 within about 150 km of this epicenter in northern Italy was an M 4.4 on October 24, 2016. Forecast 137690 had expected today's  event was likely in this area around October 6. This earthquake is located at 103-104  degrees from the M 7.1 in Mindanao, Philippines of August 11, 2021 and may have been promoted by energy from that source. Other earthquakes at this distance from Mindanao today occurred as an M 3.8 in Central California, in  Southern Idaho with M 2.9, and in northern California and Nevada.

 

O:  5OCT2021 05:39:25  46.0N    7.5E ML=4.3  ANSS   SWITZERLAND                  

O:  5OCT2021 05:39:25  46.0N    7.5E ML=4.1  EMSC   NORTHERN ITALY               

P:  6OCT2021 137690    45.0N    8.0E 3.0-5.3 AAAAA  Austria                    

 

NEIC reported the earthquake of M 4.4 in Dodecanese Islands, Greece was felt with intensity II-III in the area(s) of  Greece at Kos.

 

O:  4OCT2021 14:03:23  36.5N   27.2E mb=4.4  EMSC   DODECANESE IS.-TURKEY BORDER R

P:  6OCT2021 137629    36.0N   27.0E 3.0-5.1 AAAAA  Aegean Sea                  

 

The eruption at La Palma, Canary Islands, Spain also intensified today becoming explosive with falling pyroclasts and bombs. This eruptio hs forced the evacuation of more than 6000 residents and destroyed at least 946 houses since it began on September 19. The largest earthquake yet in the current eruption occurred today with M 3.9-4.0 and was included among a series of other earthquakes of similar size, unlike previous eruptive phases where the strongest associated earthquakes were in the M 3-3.5 range. An M 3.8-3.9 also occurred in the Canary Islands just prior to the eruption in mid-September on September 14.

Forecast 137308 had expected today's activity in late September or early October.

 

O: 04OCT2021 18:58:51  28.6N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION

O: 05OCT2021 03:36:38  28.6N   17.8W ML=3.9  EMSC   CANARY ISLANDS, SPAIN REGION

O:  4OCT2021 14:30:59  28.6N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 24SEP2021 137308    28.0N   18.0W 3.0-4.5 AAAAA  Canary Islands             

 

An earthquake of M 3.8 rocked Central California today. NEIC reported intensity IV in California at Soledad, and II-III in Gonzales, Salinas, Hollister, Paicines, Carmel Valley among others. NEIC reported an aftershock of M 2.7 in Northern California was felt with intensity II-III in the area(s) of Northern California at Discovery Bay, Byron, Brentwood, Antioch, Tracy, San Ramon, Stanford, Felton, Santa Cruz and Los Banos. NEIC reported other aftershocks of M 2.8 and 2.8 in Central California was felt with intensity II-III in the area(s) of Central California at Greenfield, Los Banos, Salinas and Dos Palos.

The last earthquake of M>=3.8 in this region of California was an M 4.1 on August 31, 2021. Other events in the area in the past year included an M 5.2 on January 17, 2021. Forecast 137649 had expected today's seismic enhancement in this area was likely around October 3.

 

O: 04OCT2021 23:07:48  36.6N  121.3W ML=3.3  EMSC   CENTRAL CALIFORNIA

O: 04OCT2021 23:07:48  36.6N  121.3W ML=3.8  ANSS   CENTRAL CALIFORNIA

O: 05OCT2021 05:03:36  36.6N  121.3W Md=2.0  EMSC   CENTRAL CALIFORNIA

O:  4OCT2021 16:36:50  37.9N  121.6W ML=2.5  EMSC   NORTHERN CALIFORNIA          

P:  3OCT2021 137640    37.9N  122.0W 2.5-4.7 AAAAA  Central California          

 

A series of minor earthquake hit the Yellowstone National Park, Wyoming today. The last similar swarm in Yellowstone occurred on September 8, 2021 with the last new moon. Today's activity was also probably promoted by the new moon of September 6. At that time this summary noted in this regard:

 

 

"Seismicity in the Yellowstone National Park area of Wyoming was enhanced today. A pair of earthquakes of M 3.0 each was recorded. This is the strongest activity in Yellowstone since an M 3.6 on July 17, 2021. It occurred near local solar  noon and may have been promoted by energy from the M 7.0 in Mexico or geomagnetic or tidal stresses." (September 8, 2021)

 

Forecast 137726 had expected today's activity in Yellowstone was likely around

October 4.

 

O: 04OCT2021 22:39:56  44.8N  110.6W Ml=2.4  EMSC   YELLOWSTONE NAT. PARK, WYOMING

O: 04OCT2021 23:38:47  44.8N  110.6W Ml=2.1  EMSC   YELLOWSTONE NAT. PARK, WYOMING

O: 05OCT2021 00:30:08  44.8N  110.6W ML=2.5  EMSC   YELLOWSTONE NAT. PARK, WYOMING

O:  4OCT2021 22:37:02  44.8N  110.6W Ml=2.5  EMSC   YELLOWSTONE NAT. PARK, WYOMING

P:  4OCT2021 137726    44.2N  110.3W 2.0-4.1 AAAAA  Yellowstone/Wyoming        

 

An M 4.6 in the region of Negros, Philippines was widely felt today.

 

"A tropical cyclone may be forming over Negros, Philippines. This storm is currently located at 10N 122W and moving to the west with winds up to 22 kts. Seismic enhancement in the central Philippines may occur as this storm moves through the area." (October 4, 2021)

 

Today's event occurred as this storm passed over the epicenter. Two earthquakes of equal or greater magnitude have occurred in Negros, Philippines in the past year - an M 4.8 on September 5 and an M 4.6 on June 29, 2021.

Forecast 137552 had expected activity in this area in early October.

 

NEIC reported this earthquake of M 4.6 in Negros, Philippines was felt with intensity II-III in the area(s) of Negros, Philippines at Sipalay, Western Visayas.

 

O:  4OCT2021 20:12:05   9.9N  122.1E mb=4.6  EMSC   NEGROS, PHILIPPINES          

P:  6OCT2021 137552     8.0N  125.0E 4.0-5.4 AABAA  Central Philippines        

 

Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.2 in the area of the Southern Vanuatu, October 2, 2021, where promoted seismicity is considered likely.

 

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:  5OCT2021 02:38:20  30.4N   94.8E mb=4.7  EMSC   EASTERN XIZANG               

P:  9OCT2021 137688    33.0N   92.0E 3.8-5.2 BCBAA  Xizang                     

 

O:  5OCT2021 00:20:10  36.5N   71.3E mb=4.6  EMSC   HINDU KUSH REGION, AFGHANISTAN

O:  4OCT2021 21:45:29  37.0N   69.9E mb=4.4  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  6OCT2021 137647    36.0N   69.0E 3.8-5.4 AAAAA  Hindu Kush/Pakistan        

 

NEIC reported this earthquake of M 4.6 in Hindu Kush, Afghanistan was felt with intensity II-III in the area(s) of Hindu Kush, Afghanistan at Jurm, Badahsan (IV) and in Termiz, Uzbekistan.

 

O:  4OCT2021 16:10:25  38.3N   74.0E mb=4.4  EMSC   TAJIKISTAN                   

P:  5OCT2021 137647    39.0N   72.0E 3.8-5.4 AABAA  Hindu Kush/Pakistan        

 

O:  5OCT2021 02:10:32  56.4N  163.3E mb=4.1  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  3OCT2021 137735    56.0N  165.0E 4.0-5.7 AAAAA  Komandorsky Isl            

 

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

 

INDONESIA AND PHILIPPINES

 

O:  4OCT2021 10:59:18   1.1N  126.9E ML=4.6  EMSC   MOLUCCA SEA                  

O:  5OCT2021 05:44:23   2.9N  128.1E mb=4.4  EMSC   HALMAHERA, INDONESIA         

P:  1OCT2021 137558     3.0N  126.0E 4.0-5.4 BABAA  Mindanao, Philippines      

 

O:  4OCT2021 14:28:46   3.7S  129.6E Mw=5.2  EMSC   SERAM, INDONESIA             

P:  4OCT2021 137564     3.0S  129.0E 4.0-5.6 AAAAA  Ceram area                 

 

NEIC reported this earthquake of M 5.3 in Seram, Indonesia was felt with intensity IV in the area(s) of Seram, Indonesia at Ambon.

 

O:  4OCT2021 19:06:41   5.5S  142.2E mb=4.9  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P:  3OCT2021 137573     4.0S  141.0E 4.0-5.4 ABAAA  Papua New Guinea           

 

O: 04OCT2021 20:40:00   6.4S  130.6E ML=4.8  EMSC   BANDA SEA

O:  5OCT2021 04:11:07   6.1S  129.8E ML=4.5  EMSC   BANDA SEA                    

P:  8OCT2021 137584     6.0S  130.0E 4.0-5.5 BAAAA  West Irian, PNG            

 

O:  4OCT2021 10:02:18   8.4S  128.0E ML=4.7  EMSC   TIMOR SEA                    

P:  4OCT2021 137562     7.0S  128.0E 4.0-5.6 ABAAA  Banda Sea                  

 

O:  4OCT2021 20:12:05   9.9N  122.1E mb=4.6  EMSC   NEGROS, PHILIPPINES          

P:  6OCT2021 137552     8.0N  125.0E 4.0-5.4 AABAA  Central Philippines        

 

 

CENTRAL AND SOUTH AMERICA

 

O:  4OCT2021 21:32:37   9.5S   74.6W mb=4.7  EMSC   CENTRAL PERU                 

P: 29SEP2021 137488    10.0S   75.0W 3.5-5.2 BAAAA  Brazil                     

 

O:  4OCT2021 07:57:57  14.7N   92.4W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

O:  4OCT2021 21:20:34  14.9N   92.1W ML=4.0  EMSC   GUATEMALA                    

P:  2OCT2021 137592    16.0N   92.0W 3.5-5.1 ABAAA  Guatemala                  

 

O:  5OCT2021 01:19:55  18.5S   67.1W mb=4.4  EMSC   ORURO, BOLIVIA               

P:  3OCT2021 137776    19.0S   69.0W 4.0-5.9 AABAA  So. Peru/Bolivia           

 

O:  4OCT2021 18:32:43  18.6N  104.4W ML=4.1  EMSC   OFFSHORE COLIMA, MEXICO      

P:  7OCT2021 137601    19.0N  104.0W 3.5-5.2 BAAAA  Michoacan, Mexico          

 

O:  5OCT2021 04:00:41  18.8N   64.8W Md=3.6  EMSC   VIRGIN ISLANDS REGION        

P:  5OCT2021 137596    19.0N   64.0W 3.0-4.9 AAAAA  Leeward Islands            

 

O:  4OCT2021 10:53:28  17.4N  101.4W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  6OCT2021 137600    17.0N  102.0W 3.5-5.1 AAAAA  Michoacan, Mexico          

 

O:  5OCT2021 04:04:44  18.0N   66.5W Md=3.0  EMSC   PUERTO RICO                  

P:  5OCT2021 137607    19.0N   67.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O: 04OCT2021 12:36:15  31.7S   72.1W Mw=4.6  EMSC   OFFSHORE COQUIMBO, CHILE

O: 04OCT2021 12:42:24  31.7S   72.1W Mw=4.0  EMSC   OFFSHORE COQUIMBO, CHILE

O:  4OCT2021 10:58:31  31.7S   72.1W ML=4.0  EMSC   OFFSHORE COQUIMBO, CHILE      

P:  6OCT2021 137795    33.0S   73.0W 4.0-5.5 ABAAA  Central Chile              

P:  8OCT2021 137795    32.0S   71.0W 4.0-5.8 BAAAA  Central Chile              

 

NEIC reported this earthquake of M 4.6 in Coquimbo, Chile was felt with intensity II-III in the area(s) of Coquimbo, Chile at Illapel (V); in La Ligua and Vina del Mar, Valparaiso.

 

 

AFRICA AND EUROPE

 

O: 04OCT2021 18:58:51  28.6N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION

O: 05OCT2021 03:36:38  28.6N   17.8W ML=3.9  EMSC   CANARY ISLANDS, SPAIN REGION

O:  4OCT2021 14:30:59  28.6N   17.8W ML=3.7  EMSC   CANARY ISLANDS, SPAIN REGION 

 

O:  4OCT2021 14:03:23  36.5N   27.2E mb=4.4  EMSC   DODECANESE IS.-TURKEY BORDER R

P:  6OCT2021 137629    36.0N   27.0E 3.0-5.1 AAAAA  Aegean Sea                  

 

O:  5OCT2021 05:39:25  46.0N    7.5E ML=4.1  EMSC   NORTHERN ITALY               

P:  6OCT2021 137690    45.0N    8.0E 3.0-5.3 AAAAA  Austria                    

 

SOUTHWEST PACIFIC

 

O:  4OCT2021 19:36:37  17.2S  173.8W mb=4.8  EMSC   TONGA                        

P:  5OCT2021 137779    16.0S  174.0W 4.0-5.6 ABAAA  Tonga Islands              

 

O:  4OCT2021 18:32:03  23.6S  179.4E mb=4.9  EMSC   SOUTH OF FIJI ISLANDS        

P:  1OCT2021 137793    23.0S  179.0E 4.0-5.6 BAAAA  Tonga/Fiji                  

 

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

 

OCEAN RIDGES

 

O:  4OCT2021 14:51:45  60.5S   27.2W mb=5.0  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  6OCT2021 137813    60.0S   26.0W 4.0-5.6 AAAAA  So. Sandwich Islands       

 

ZEALANDIA AND AUSTRALIA REGION

 

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

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

O:  4OCT2021 21:06:32  38.1N  142.1E mb=4.5  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  8OCT2021 137661    38.0N  141.0E 4.0-5.4 BAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 04OCT2021 21:21:54  31.0N  114.2W ML=3.9  EMSC   GULF OF CALIFORNIA

O: 04OCT2021 21:53:32  31.3N  114.3W ML=3.4  EMSC   GULF OF CALIFORNIA

O:  4OCT2021 20:33:50  31.0N  114.2W ML=3.9  EMSC   GULF OF CALIFORNIA           

P:  3OCT2021 137663    30.4N  114.3W 2.0-4.0 AAAAA  SW U.S.A                   

 

O:  5OCT2021 00:22:54  32.3N  115.4W Ml=2.2  EMSC   BAJA CALIFORNIA, MEXICO      

P:  7OCT2021 137666    32.4N  115.8W 2.5-4.8 AAAAA  So. California             

 

O:  4OCT2021 23:56:01  33.7N  118.8W Ml=2.1  EMSC   CHANNEL ISLANDS REG., CALIFORN

P:  7OCT2021 137670    34.0N  118.7W 2.5-4.4 BAAAA  So. California             

 

O:  4OCT2021 19:07:45  35.7N  117.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P:  4OCT2021 137674    35.7N  118.1W 2.5-4.8 AAAAA  So. California             

 

O:  5OCT2021 00:51:48  36.5N  121.1W Md=2.8  EMSC   CENTRAL CALIFORNIA           

P:  8OCT2021 137638    36.4N  121.0W 2.5-4.7 BAAAA  Central California         

 

O: 04OCT2021 21:46:06  37.4N  117.1W ml=2.1  EMSC   NEVADA

O: 04OCT2021 23:57:36  37.4N  117.1W ml=2.3  EMSC   NEVADA

O: 05OCT2021 00:01:04  37.4N  117.1W ml=2.0  EMSC   NEVADA

O: 05OCT2021 01:42:55  37.4N  117.2W ml=2.0  EMSC   NEVADA

O: 05OCT2021 03:07:35  37.4N  117.1W ML=2.5  EMSC   NEVADA

O: 05OCT2021 04:25:01  37.4N  117.1W ml=2.0  EMSC   NEVADA

O: 05OCT2021 04:52:57  37.4N  117.1W ml=2.2  EMSC   NEVADA

O:  4OCT2021 20:44:42  37.4N  117.1W ml=2.1  EMSC   NEVADA                       

P:  4OCT2021 137631    37.2N  117.3W 2.5-4.6 AAAAA  California/Nevada area     

 

O:  5OCT2021 04:28:11  37.5N  118.8W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P:  7OCT2021 137632    37.4N  118.6W 2.5-4.8 AAAAA  California/Nevada area     

 

O:  5OCT2021 03:57:04  37.9N  118.6W ml=2.1  EMSC   CENTRAL CALIFORNIA           

P:  7OCT2021 137634    38.0N  118.8W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 04OCT2021 23:07:48  36.6N  121.3W ML=3.3  EMSC   CENTRAL CALIFORNIA

O: 04OCT2021 23:07:48  36.6N  121.3W ML=3.8  ANSS   CENTRAL CALIFORNIA

O: 05OCT2021 05:03:36  36.6N  121.3W Md=2.0  EMSC   CENTRAL CALIFORNIA

O:  4OCT2021 16:36:50  37.9N  121.6W ML=2.5  EMSC   NORTHERN CALIFORNIA          

P:  3OCT2021 137640    37.9N  122.0W 2.5-4.7 AAAAA  Central California         

 

O:  4OCT2021 12:47:03  38.2N  117.7W ml=2.2  EMSC   NEVADA                       

P:  2OCT2021 137631    36.1N  118.1W 2.5-4.8 ACAAA  California/Nevada area     

 

O:  5OCT2021 01:34:01  38.5N  119.4W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P:  5OCT2021 137635    38.7N  119.7W 2.5-4.5 AAAAA  California/Nevada area     

 

O:  5OCT2021 03:37:59  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P:  4OCT2021 137641    38.8N  122.8W 2.5-4.7 AAAAA  Central California         

 

O: 04OCT2021 10:47:37  40.0N  117.9W ml=2.0  EMSC   NEVADA

O:  4OCT2021 10:15:46  39.9N  117.8W ml=2.0  EMSC   NEVADA                        

P: 26SEP2021 137404    40.0N  117.9W 2.5-4.8 CAAAA  California/Nevada area     

 

O:  5OCT2021 00:18:51  41.2N  120.3W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P:  5OCT2021 137715    42.1N  120.3W 2.0-4.3 AAAAA  Oregon state, U.S.         

 

 

ALASKA

 

O:  4OCT2021 12:34:37  56.2N  150.0W ML=3.3  EMSC   GULF OF ALASKA               

P:  6OCT2021 137756    55.0N  149.0W 3.0-4.8 ABAAA  Northern Alaska            

 

O:  4OCT2021 11:06:32  56.9N  156.2W ML=3.4  EMSC   ALASKA PENINSULA             

P: 29SEP2021 137444    54.8N  158.7W 3.5-5.0 BBBAA  Alaska Peninsula           

 

O:  5OCT2021 04:26:30  58.7N  155.1W ml=3.4  EMSC   ALASKA PENINSULA             

P:  9OCT2021 137748    60.1N  153.4W 3.2-5.4 BBAAA  Central Alaska             

 

O:  5OCT2021 02:44:09  59.5N  152.4W ML=3.3  EMSC   SOUTHERN ALASKA              

P:  5OCT2021 137749    60.2N  151.7W 3.2-5.3 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  3OCT2021 03:56:18  57.7N  133.9W MB=3.1  ECAN Juneau, Alaska, USA            

P:  3OCT2021 137742    58.0N  133.0W 3.0-4.4 AAAAA  Southeast Alaska           

 

O:  2OCT2021 23:19:42  49.1N  130.1W MB=3.8  ECAN Port Alice, BC                 

O:  2OCT2021 19:47:37  49.0N  129.2W MB=3.7  ECAN Port Alice, BC                  

P:  1OCT2021 137723    48.9N  129.3W 2.8-5.4 AAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 04OCT2021 18:05:05  31.7N  104.0W ML=2.5  EMSC   WESTERN TEXAS

O: 04OCT2021 21:33:20  31.7N  104.5W ML=3.2  EMSC   WESTERN TEXAS

O:  4OCT2021 17:21:28  31.7N  104.0W ML=2.0  EMSC   WESTERN TEXAS                

P:  4OCT2021 137664    31.2N  104.1W 2.0-4.0 AAAAA  SW U.S.A                   

 

O: 04OCT2021 14:58:50  44.3N  115.0W Ml=2.4  EMSC   SOUTHERN IDAHO

O: 04OCT2021 19:37:14  44.3N  115.0W Ml=2.2  EMSC   SOUTHERN IDAHO

O: 04OCT2021 08:25:10  44.5N  115.2W Ml=2.1  EMSC   SOUTHERN IDAHO

O:  4OCT2021 07:38:45  44.3N  115.0W Ml=2.9  EMSC   SOUTHERN IDAHO               

P:  4OCT2021 137700    44.4N  115.1W 2.0-4.1 AAAAA  Montana/Idaho              

 

O: 04OCT2021 22:39:56  44.8N  110.6W Ml=2.4  EMSC   YELLOWSTONE NAT. PARK, WYOMING

O: 04OCT2021 23:38:47  44.8N  110.6W Ml=2.1  EMSC   YELLOWSTONE NAT. PARK, WYOMING

O: 05OCT2021 00:30:08  44.8N  110.6W ML=2.5  EMSC   YELLOWSTONE NAT. PARK, WYOMING

O:  4OCT2021 22:37:02  44.8N  110.6W Ml=2.5  EMSC   YELLOWSTONE NAT. PARK, WYOMING

P:  4OCT2021 137726    44.2N  110.3W 2.0-4.1 AAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.

 

HAWAII

 

O:  4OCT2021 17:17:25  19.2N  155.5W ML=3.7  EMSC   ISLAND OF HAWAII, HAWAII     

P:  6OCT2021 137594    19.4N  155.4W 3.0-4.8 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.6 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Naalehu, Captain Cook, Holualoa, Kealakekoa, Curtistown, Kailua Kona, Princeville.

 

MODERATE QUAKE IN IRAN PROMOTED BY TC SHAHEEN-GULAB

 

EARTHQUAKE SUMMARY FOR OCTOBER  3, 2021

 

An M 5.6 earthquake was widely felt in western Iran today with some damage reported. NEIC reported it was felt with intensity VII in Khuzestan, Iran at Masjed Soleyman and Izeh; IV in Arac and al-Baarah and II-III in Ahwaz, Borujen, Mcbaakeh, Aspanada, and Salmya, Kuwait. This epicenter may have been promoted by stresses associated with Tropical Cyclone Shaheen-Gulab which is passing to the south of this epicenter at this time and was expected in previous issues of this summary as:

 

"Tropical Cyclone Shaheen-Gulab (03B) continued today south of eastern Iran with winds up to 85 kts. It is expected to track to the west areas south of Iran in the next several days. Some enhanced seismicity may occur in southern Iran as this storm is in the area." (October 1-3, 2021)

 

Today's event in Iran is the strongest within about 200 km of this epicenter since an M 5.7 more than two years ago on July 8, 2019. An M 5.6 also shook the area on September 25, 2002 but since then most activity of larger magnitude in the area has occurred about 200 km to the west of today's epicenter. Forecast 137677 and 137387 had expected today's activity within this are was likely at the end of September or in early October. This epicenter is at 105 degrees from the M 7.2 in Haiti of August 14, 2021 and may have been promoted by energy from that source.

 

O:  4OCT2021 02:39:27  32.3N   49.8E Mw=5.6  EMSC   WESTERN IRAN                 

P:  4OCT2021 137677    31.0N   50.0E 3.8-5.3 ABAAA  So. Iran                   

P: 25SEP2021 137387    32.0N   49.0E 3.8-5.3 CAAAA  So. Iran                   

 

The strongest earthquake in the world today was an M 6.2 in the South Sandwich Islands. This is the strongest earthquake in the South Sandwich Islands since an M 7.1 on  August 22. These are aftershocks of an M 8.1 in the area on August 12. This epicenter, like those yesterday in Brazil and the South Indian Ocean is located near 103 degrees from the M 7.2 in Vanuatu of October 2 and was probably promoted by energy from that source. An earthquake of M 5.2 in the Prince Edward Islands today was also at 103 degrees from the Vanuatu epicenter. The last earthquake within about 200 km of this epicenter with M>=5.2 was an M 6.2 on November 17, 2014. An earthquake about 200 km from this epicenter also occurred with M 5.2-5.3 on August 7, 2021. Forecast 137811 had expected the event in the Prince Edward Islands was likely around October 6 wile forecast 137813 had expected the event in the South Sandwich Islands was likely around October 6. Other activity today near 103 degrees from Vanuatu occurred as an M 4.9 in Nicaragua an M 4.6 in northern Chile, light quakes in Peninsular India and an M 3.8 in northern Kansas.

 

O:  4OCT2021 04:12:41  47.0S   33.7E mb=5.2  EMSC   PRINCE EDWARD ISLANDS REGION 

P:  6OCT2021 137811    51.0S   29.0E 4.0-5.4 ACCAA  Atlantic-Indian Ridge      

 

O:  4OCT2021 03:54:07  60.4S   27.7W Mw=6.2  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  6OCT2021 137813    60.0S   26.0W 4.0-5.6 AAAAA  So. Sandwich Islands       

 

The strongest earthquake in the U.S. or Canada today was an M 4.6 in the Fox Islands, Aleutians, Alaska. This appears to be an aftershock of the M 5.1 which shook the area on October 1, 2021. Forecast 137729 had expected today's activity was likely within about 15 km of this epicenter around October 6.

 

O:  3OCT2021 15:53:37  52.2N  171.2W mb=4.6  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  6OCT2021 137729    52.1N  171.3W 3.5-5.3 AAAAA  Andreanoff Isls, Aleutians 

 

A light to moderate earthquake of M 3.8 was felt in north-central Kansas today. NEIC reported this earthquake of M 3.8 in Kansas was felt with intensity II-III in the area(s) of Kansas at Lindsborg, Salina, Solomon, Galva, Abilene, Marquette, McPherson and Hutchinson and IV in Gypsum and Assaria.  This is the strongest earthquake in Kansas since an M 3.9 on March 14, 2021. A similar M 3.8 hit about 100 km north of today's epicenter on May 6, 2001. The only other event in Kansas in the past year of M>=3.5 was an M 3.8 on December 30, 2020. Forecast 137681 had expected today's activity within about 100 km was likely in Kansas around October 3.

 

O:  4OCT2021 02:58:14  38.7N   97.5W mb=3.8  EMSC   KANSAS                       

P:  3OCT2021 137681    39.0N   99.0W 2.0-4.1 AAAAA  Southern Plains            

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:  3OCT2021 13:23:20  21.2N  119.9E mb=4.6  EMSC   TAIWAN REGION                

O:  4OCT2021 06:07:50  24.8N  122.2E ML=4.8  TAI    Hualien, Taiwan              

O:  4OCT2021 06:07:50  24.8N  122.2E ML=4.9  ANSS   Hualien, Taiwan              

P:  3OCT2021 137622    25.0N  123.0E 4.0-5.6 AAAAA  Ryukyu Islands             

P: 26SEP2021 137324    21.0N  120.0E 4.0-5.4 CAAAA  Taiwan                     

 

CWB reported the earthquake  of M 4.8 was felt with intensity III in Yilan, II in Taipei and I in Taoyuan, Hsinchu, Taichung, Nantou and Miaoli Counties, Taiwan.

NEIC reported this earthquake of M 4.9 in Taiwan was felt with intensity II-III in the area(s) of Taiwan in Ilan and Taipei.

 

O:  3OCT2021 08:52:28  22.3N   85.6E ML=4.1  EMSC   JHARKHAND, INDIA             

P:  7OCT2021 137585    19.0N   92.0E 4.0-5.6 BCCAA  Andaman Islands            

 

O:  4OCT2021 06:07:51  24.8N  122.2E mb=4.9  EMSC   TAIWAN REGION                

P:  3OCT2021 137622    25.0N  123.0E 4.0-5.6 AAAAA  Ryukyu Islands             

 

O:  4OCT2021 03:24:19  30.4N   94.8E mb=4.9  EMSC   EASTERN XIZANG               

P:  1OCT2021 137620    25.0N   95.0E 4.0-5.7 BCAAA  Myanmar                    

 

O:  4OCT2021 02:39:27  32.3N   49.8E Mw=5.6  EMSC   WESTERN IRAN                 

P:  4OCT2021 137677    31.0N   50.0E 3.8-5.3 ABAAA  So. Iran                   

P: 25SEP2021 137387    32.0N   49.0E 3.8-5.3 CAAAA  So. Iran                   

 

INDONESIA AND PHILIPPINES

 

O:  3OCT2021 19:44:34   0.4S  124.5E mb=4.4  EMSC   MOLUCCA SEA                  

P:  4OCT2021 137580     1.0S  124.0E 4.0-5.5 AAAAA  Sulawesi area              

 

O:  4OCT2021 01:35:22   1.9S  103.7E ML=4.0  EMSC   SOUTHERN SUMATRA, INDONESIA  

O:  4OCT2021 06:20:12   2.3S  103.7E ML=4.3  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  7OCT2021 137578     2.0S  100.0E 4.0-5.5 BACAA  So. of Sumatera            

 

O:  4OCT2021 00:51:21   2.3S  138.4E ML=4.3  EMSC   PAPUA, INDONESIA             

P:  1OCT2021 137583     5.0S  138.0E 4.0-5.5 BCAAA  West Irian, PNG            

 

O:  3OCT2021 22:05:49   6.0N  126.2E mb=4.4  EMSC   MINDANAO, PHILIPPINES        

P:  2OCT2021 137557     6.0N  127.0E 4.0-5.4 AAAAA  Halmahera                  

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 03OCT2021 21:10:01  11.2N   86.8W mb=4.9  EMSC   NEAR COAST OF NICARAGUA

O: 03OCT2021 21:39:30  11.2N   86.8W ML=4.2  EMSC   NEAR COAST OF NICARAGUA

O:  3OCT2021 13:05:30  11.1N   86.9W ML=4.1  EMSC   NEAR COAST OF NICARAGUA      

P:  3OCT2021 137602    11.0N   86.0W 3.5-5.3 AAAAA  Nicaragua                  

 

O:  3OCT2021 22:20:28  12.6N   88.3W ML=4.0  EMSC   OFFSHORE EL SALVADOR         

P:  1OCT2021 137590    13.0N   89.0W 3.5-5.5 AAAAA  Coast of Central America   

 

O:  3OCT2021 16:19:12  15.6N   95.1W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P:  4OCT2021 137589    16.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O:  3OCT2021 11:01:52  18.0N   65.9W Md=3.1  EMSC   PUERTO RICO REGION           

P:  2OCT2021 137607    18.0N   66.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O:  3OCT2021 21:31:00  24.2S   67.3W mb=4.6  EMSC   SALTA, ARGENTINA             

P:  3OCT2021 137783    23.0S   66.0W 4.0-5.6 ABAAA  Argentina                   

P:  9OCT2021 137783    24.0S   67.0W 4.0-5.4 CAAAA  Argentina                  

 

O:  3OCT2021 08:38:34  36.9S   74.1W Mw=4.3  EMSC   OFFSHORE BIO-BIO, CHILE      

P: 28SEP2021 137525    36.0S   73.0W 4.0-5.5 BAAAA  Central Chile               

 

 

AFRICA AND EUROPE

 

O: 03OCT2021 11:11:16  28.6N   17.8W ML=3.1  EMSC   CANARY ISLANDS, SPAIN REGION

O: 03OCT2021 12:34:39  28.6N   17.8W ML=3.0  EMSC   CANARY ISLANDS, SPAIN REGION

O: 03OCT2021 22:06:59  28.6N   17.9W ML=3.4  EMSC   CANARY ISLANDS, SPAIN REGION

O: 03OCT2021 22:58:26  28.6N   17.8W ML=3.4  EMSC   CANARY ISLANDS, SPAIN REGION

O: 03OCT2021 23:07:22  28.6N   17.9W ML=3.4  EMSC   CANARY ISLANDS, SPAIN REGION

O: 03OCT2021 23:17:34  28.6N   17.8W ML=3.2  EMSC   CANARY ISLANDS, SPAIN REGION

O: 04OCT2021 04:48:56  28.6N   17.8W ML=3.1  EMSC   CANARY ISLANDS, SPAIN REGION

O: 04OCT2021 05:36:08  28.6N   17.8W ML=3.4  EMSC   CANARY ISLANDS, SPAIN REGION

O: 04OCT2021 05:44:27  28.6N   17.8W ML=3.0  EMSC   CANARY ISLANDS, SPAIN REGION

O: 04OCT2021 06:01:12  28.6N   17.8W ML=3.0  EMSC   CANARY ISLANDS, SPAIN REGION

O: 04OCT2021 06:17:57  28.6N   17.8W ML=3.2  EMSC   CANARY ISLANDS, SPAIN REGION

O: 04OCT2021 06:20:23  28.6N   17.8W ML=3.4  EMSC   CANARY ISLANDS, SPAIN REGION

O: 04OCT2021 06:44:11  28.6N   17.8W ML=3.1  EMSC   CANARY ISLANDS, SPAIN REGION

O: 03OCT2021 19:14:34  28.7N   17.6W ML=3.6  EMSC   CANARY ISLANDS, SPAIN REGION

O:  3OCT2021 09:08:47  28.6N   17.8W ML=3.2  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 24SEP2021 137308    28.0N   18.0W 3.0-4.5 AAAAA  Canary Islands             

 

O:  4OCT2021 01:31:12  12.8S   45.6E ML=3.2  EMSC   MAYOTTE REGION               

P:  3OCT2021 137769    12.0S   45.0E 3.0-4.6 AAAAA  Madagascar area            

 

O:  3OCT2021 18:42:31  35.7N    5.1E mb=4.1  EMSC   NORTHERN ALGERIA             

P:  5OCT2021 137686    39.0N    0.0E 3.0-4.6 ACCAA  Western Mediterranean      

 

O:  3OCT2021 07:15:08  37.5N   30.4E mb=4.2  EMSC   WESTERN TURKEY               

P:  1OCT2021 137682    39.0N   31.0E 3.5-4.9 ABAAA  Turkey                     

 

NEIC reported this earthquake of M 4.2 in Western Turkey was felt with intensity II-III in the area(s) of Western Turkey at Burdur.

 

O:  3OCT2021 12:18:13  63.9N   22.2W ML=3.5  EMSC   ICELAND REGION                

P:  2OCT2021 137754    64.0N   25.0W 3.0-4.6 AABAA  Iceland area               

 

SOUTHWEST PACIFIC

 

O:  3OCT2021 09:45:56  19.1S  169.1E mb=4.9  EMSC   VANUATU                      

P:  5OCT2021 137786    21.0S  170.0E 4.0-5.6 ABAAA  Loyalty Islands             

 

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

 

OCEAN RIDGES

 

O:  4OCT2021 04:12:41  47.0S   33.7E mb=5.2  EMSC   PRINCE EDWARD ISLANDS REGION 

P:  6OCT2021 137811    51.0S   29.0E 4.0-5.4 ACCAA  Atlantic-Indian Ridge      

 

O:  4OCT2021 03:54:07  60.4S   27.7W Mw=6.2  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  6OCT2021 137813    60.0S   26.0W 4.0-5.6 AAAAA  So. Sandwich Islands       

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  4OCT2021 06:34:11  30.1S  177.4W Mw=5.5  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P:  5OCT2021 137800    30.0S  179.0W 4.0-5.6 AAAAA  No. Kermadec Islands       

 

O:  4OCT2021 00:35:20  33.2S  177.6W mb=4.4  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 29SEP2021 137534    32.0S  178.0W 4.0-5.4 BBAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O:  3OCT2021 08:49:38  34.4N  141.6E mb=4.6  EMSC   OFF EAST COAST OF HONSHU, JAPA

P:  2OCT2021 137661    35.0N  141.0E 4.0-5.6 AAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 03OCT2021 07:47:31  30.8N  114.4W ML=3.5  EMSC   GULF OF CALIFORNIA

O: 03OCT2021 09:44:52  30.9N  114.3W ML=3.4  EMSC   GULF OF CALIFORNIA

O:  3OCT2021 09:12:34  30.7N  114.4W ML=3.6  EMSC   GULF OF CALIFORNIA           

P:  3OCT2021 137663    30.4N  114.3W 2.0-4.0 AAAAA  SW U.S.A                   

 

O:  3OCT2021 16:37:23  31.9N  116.3W ML=2.6  EMSC   BAJA CALIFORNIA, MEXICO      

P:  3OCT2021 137665    32.1N  116.4W 2.5-4.9 AAAAA  So. California             

 

O:  3OCT2021 12:06:32  36.5N  121.1W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P:  2OCT2021 137638    36.9N  121.7W 2.5-4.5 AAAAA  Central California         

P:  8OCT2021 137638    36.4N  121.0W 2.5-4.7 BAAAA  Central California         

 

O:  3OCT2021 12:02:00  37.2N  121.6W ML=3.1  EMSC   NORTHERN CALIFORNIA          

O:  3OCT2021 12:02:00  37.2N  121.6W ML=3.3  ANSS   NORTHERN CALIFORNIA          

P:  2OCT2021 137638    36.9N  121.7W 2.5-4.5 AAAAA  Central California         

P:  7OCT2021 137639    37.2N  122.1W 2.5-4.8 BAAAA  Central California         

 

NEIC reported this earthquake of M 3.3 in Northern California was felt with intensity II-III in the area(s) of Northern California at Morgan Hill, San Jose, Coyote, and Gilroy among others.

 

O:  3OCT2021 15:38:19  38.8N  122.8W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P:  4OCT2021 137641    38.8N  122.8W 2.5-4.7 AAAAA  Central California         

 

 

ALASKA

 

O:  3OCT2021 15:53:37  52.2N  171.2W mb=4.6  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  6OCT2021 137729    52.1N  171.3W 3.5-5.3 AAAAA  Andreanoff Isls, 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: 03OCT2021 20:10:02  31.7N  104.3W ML=2.7  EMSC   WESTERN TEXAS

O:  4OCT2021 05:00:28  31.6N  104.3W ML=3.1  EMSC   WESTERN TEXAS                

P:  4OCT2021 137664    31.2N  104.1W 2.0-4.0 AAAAA  SW U.S.A                   

 

O: 04OCT2021 03:07:58  44.3N  115.0W ML=2.5  EMSC   SOUTHERN IDAHO

O: 04OCT2021 03:18:30  44.3N  115.1W ML=3.0  EMSC   SOUTHERN IDAHO

O:  4OCT2021 02:56:21  44.3N  115.1W ML=2.6  EMSC   SOUTHERN IDAHO               

P:  4OCT2021 137700    44.4N  115.1W 2.0-4.1 AAAAA  Montana/Idaho              

 

NEIC reported this earthquake of M 3.0 in Southern Idaho was felt with intensity II-III in the area(s) of Southern Idaho at Stanley and Kuna.

 

EASTERN U.S./CANADA

 

O:  4OCT2021 05:29:56  35.1N   95.4W ML=2.1  EMSC   OKLAHOMA                     

P:  4OCT2021 137680    35.0N   97.0W 2.0-4.2 AAAAA  Southern Plains            

 

O: 03OCT2021 14:13:36  36.4N   98.2W mb=2.4  EMSC   OKLAHOMA

O:  3OCT2021 14:13:36  36.4N   98.2W mb=2.4  EMSC   OKLAHOMA                     

P:  6OCT2021 137680    36.0N   97.0W 2.0-4.2 BAAAA  Southern Plains            

P:  8OCT2021 137681    37.0N   98.0W 2.0-4.2 BAAAA  Southern Plains            

 

O:  4OCT2021 02:58:14  38.7N   97.5W mb=3.8  EMSC   KANSAS                       

P:  3OCT2021 137681    39.0N   99.0W 2.0-4.1 AAAAA  Southern Plains            

 

HAWAII

 

O:  3OCT2021 20:45:21  19.2N  155.4W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII     

P:  3OCT2021 137594    19.9N  156.1W 3.0-4.8 AAAAA  Hawaii