EARTHQUAKES SHAKE CENTRAL PERU, SEA OF OKHOTSK, RUSSIA

 

EARTHQUAKE SUMMARY FOR JANUARY 20, 2021

 

The strongest earthquake in the world today was an M 5.5 in Central Peru. NEIC reported it was felt with maximum intensity VI in Ica Peru at Marcona and Palpa; V in Nazca, Santiago, Vista Alegre, and Pisco and IV in Los Aquijes, Acari, San Juan Bautista and San Clemente. Moderate foreshocks of M 4.8, 5.3 and M 5.1 shook Nazca with intensity III-IV. NEIC reported aftershocks of M 4.8 and M 5.3 in Central Peru were felt with intensity II-III in the area(s) of Central Peru at Vista Alegre, Ica. This activity was likely promoted by strong tidal stresses associated with the new moon of January 13 as it occurred at the longitude where such stresses were maximized at the time as noted in previous issues of this summary:

 

"The new moon will arrive at 05:00 UT on January 13. Longitudes which are at sub-lunar conditions (local solar midnight) at this time are near 75 West and those at sub-solar conditions (local solar noon) are near 105 East. These include in the west, the west coast of South America and eastern North America and in the east western and central Indonesia, the Philippines and Taiwan among others. These areas are most likely to see tidally enhanced seismicity in the next week through January 17, 2021. Tidal enhancement is most likely near local solar noon and midnight. A strong global earthquake is likely in this period." (January 12-18, 2021)

 

Forecasts 130475 and 130762 had expected today's activity between January 17 and 23 to the east of today's epicenter in Central Peru. An M 7.1 hit the region about 100 km southeast of today's epicenter on January 14, 2018 but the last event of M>=5.5 within about 200 km of today's epicenter occurred as an M 5.7 on December 27, 2020 and an M 5.6 on October 28, 2020. This activity is located at 144 degrees from the M 6.7 quake in Mongolia of January 11, 2021, the largest earthquake of the current year. Seismic energy is concentrated at this distance from major surface disturbances after reflection and refraction off core boundaries and can help promote further seismicity at this distance.

 

O: 20JAN2021 22:59:12  15.0S   75.6W Mw=5.5  EMSC   NEAR COAST OF CENTRAL PERU

O: 20JAN2021 23:09:16  15.0S   75.6W Mw=5.3  EMSC   NEAR COAST OF CENTRAL PERU

O: 21JAN2021 00:27:45  15.0S   75.6W mb=4.8  EMSC   NEAR COAST OF CENTRAL PERU

O: 20JAN2021 22:27:42  15.1S   75.7W Mw=5.1  EMSC   NEAR COAST OF CENTRAL PERU

O: 20JAN2021 22:49:26  15.0S   75.6W mb=4.8  EMSC   NEAR COAST OF CENTRAL PERU   

P: 17JAN2021 130475    15.0S   73.0W 4.0-5.8 BABAA  Central Peru               

P: 23JAN2021 130762    15.0S   73.0W 4.0-5.8 BABAA  Central Peru               

 

An M 5.5 in the Sea of Okhotsk, Russia also occurred today. NEIC reported it was felt with intensity V in Toyohara, Sakhalin, Russia. This deep focus earthquake (575 km depth) is the strongest in the Sea of Okhotsk within about 300 km of this epicenter since an M 6.0 on November 2, 2018; an M 5.7 on July 23, 2016 and an M 5.5 on November 23, 2005. The largest, and only event in the region with M>6 in the past 30 years was an M 7.3 on November 17, 2002. Forecast 130446 had expected today's event within about 35 km of this epicenter was likely around January 20.

 

O: 20JAN2021 16:00:40  49.7N  147.8E Mw=5.5  EMSC   SEA OF OKHOTSK               

P: 20JAN2021 130446    50.0N  148.0E 4.0-5.6 AAAAA  Sakhalin                   

 

An unusual earthquake of M 4.2 shook central Austria today.

NEIC reported this earthquake of M 4.1-4.2 in Austria was felt with intensity IV in the area(s) of Liezen, Austria and II-III in Austria at Hall Tirol, Micheldorf, Fohnsdorf, Sankt Valentin, Sahladming, Steiermark, Tamsweg, Salzburg, Linz, Linz, Oberosterreich, and in Budweis, Jihocesky, Czech Republic.

The only event of M>=4 in the past year in Austria was an M 4.0 on August 8, 2020. The last earthquake in Austria within about 150 km of today's epicenter with M>=4.3 occurred as an M 4.4 on October 1, 2004. The only event within  this area in the past 8 years within Austria and within about 200 km of today's epicenter was an M 4.3 on December 3, 2012. Forecast 130382 had expected today's event was likely in mid-January in Austria.

 

O: 20JAN2021 07:30:26  47.6N   14.4E ML=4.2  EMSC   AUSTRIA                      

P: 14JAN2021 130382    46.0N   13.0E 3.0-5.2 CBAAA  Austria                    

 

An M 3.3-3.5 in the greater Los Angeles, California area today was reported by NEIC to have been felt with maximum intensity IV in Los Angeles and Compton, California. Moderate earthquakes in this area of Los Angeles have been absent within about 75 km of this epicenter since an M 4.5 on September 19, 2020 and an M 4.2 on July 30, 2020. Forecast 130671 had expected today's event within about 10 km was likely around January 23.

 

O: 20JAN2021 16:31:57  33.9N  118.3W ML=3.3  EMSC   GREATER LOS ANGELES AREA, CALI

O: 20JAN2021 16:31:58  33.9N  118.3W ML=3.5  ANSS   GREATER LOS ANGELES AREA, CALI

P: 23JAN2021 130671    33.9N  118.3W 2.5-4.6 BAAAA  So. California             

 

 

An unusually large earthquake of M 5.2 occurred in the Gulf of California, Mexico today. It followed an M 4.2 which was probably promoted by strong tidal stresses as it occurred within about 30 minutes of local solar midnight, a time when such stresses maximize. The M 5.2 is the strongest event within about 150 km of its epicenter since an M 5.3 on September 24, 2020 and prior to that an M 6.3 on January 19, 2018.  Forecast 130302 had expected today's activity in this region was possible around January 19. Earthquakes in the Gulf of California can add stress to faults to the north in California promoting further seismicity in that region. The M 3.5 in Los Angeles, California today occurred about 1.5 hours after the M 5.2 in the Gulf of California and may have been enhanced from that event. Both these events in the Gulf of California and the M 3.5 in Los Angeles, California today are at 102-104 degrees from the M 7.0 in the Dodecanese Islands, Greece of October 30 and were probably enhanced by concentrated energy from that source.

 

 

O: 20JAN2021 14:59:48  26.4N  111.0W Mw=5.2  EMSC   GULF OF CALIFORNIA

O: 20JAN2021 07:48:07  26.0N  110.5W ML=4.2  EMSC   GULF OF CALIFORNIA           

P: 19JAN2021 130302    28.0N  112.0W 3.5-4.9 ABBAA  Gulf of 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: 20JAN2021 13:42:34  44.7N   82.8E mb=4.0  EMSC   NORTHERN XINJIANG, CHINA     

P: 18JAN2021 130393    42.0N   83.0E 4.0-5.6 ACAAA  Kirgizstan/Xinjiang        

 

O: 20JAN2021 16:00:40  49.7N  147.8E Mw=5.5  EMSC   SEA OF OKHOTSK               

P: 20JAN2021 130446    50.0N  148.0E 4.0-5.6 AAAAA  Sakhalin                   

 

INDONESIA AND PHILIPPINES

 

O: 21JAN2021 01:51:46   0.8S  122.4E ML=4.0  EMSC   SULAWESI, INDONESIA

O: 20JAN2021 17:24:39   0.2S  123.7E ML=4.1  EMSC   SULAWESI, INDONESIA          

P: 19JAN2021 130225     0.0N  122.0E 4.0-5.4 AABAA  Celebes Sea                

 

O: 21JAN2021 03:32:17   2.8S  122.4E ML=4.3  EMSC   SULAWESI, INDONESIA

O: 21JAN2021 05:42:32   2.8S  122.3E ML=4.2  EMSC   SULAWESI, INDONESIA          

P: 20JAN2021 130261     4.0S  123.0E 4.0-5.6 ABAAA  Sulawesi area               

 

O: 20JAN2021 21:37:59   3.1S  135.6E ML=4.2  EMSC   PAPUA, INDONESIA             

P: 17JAN2021 130263     3.0S  135.0E 4.0-5.6 BAAAA  West Irian, PNG            

 

O: 20JAN2021 20:03:56   3.5N  124.6E ML=4.5  EMSC   CELEBES SEA                   

P: 19JAN2021 130233     4.0N  126.0E 4.0-5.6 AABAA  Mindanao, Philippines      

 

O: 20JAN2021 08:54:50   4.7S  155.0E mb=4.8  EMSC   BOUGAINVILLE REGION, P.N.G.  

P: 26JAN2021 130559     6.0S  154.0E 4.0-5.4 CBAAA  New Britain                

 

O: 21JAN2021 02:56:22   5.6S  146.5E mb=4.6  EMSC   EASTERN NEW GUINEA REG., P.N.G

O: 21JAN2021 02:06:22   5.6S  147.5E mb=4.8  EMSC   EASTERN NEW GUINEA REG., P.N.G

P: 16JAN2021 130249     6.0S  147.0E 4.0-5.4 BAAAA  New Ireland                

 

NEIC reported this earthquake of M 4.8 in Eastern New Guinea was felt with intensity II-III in the area(s) of Eastern New Guinea at Lae Morobe, New Guinea.

 

O: 20JAN2021 09:50:09   6.7S  129.8E mb=4.5  EMSC   BANDA SEA                    

P: 25JAN2021 130573     7.0S  130.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

CENTRAL AND SOUTH AMERICA

 

O: 21JAN2021 06:32:32   7.5N   82.5W mb=4.5  EMSC   SOUTH OF PANAMA              

O: 20JAN2021 07:17:30   8.4N   82.9W ML=4.3  EMSC   PANAMA-COSTA RICA BORDER REGIO

P: 15JAN2021 130230     8.0N   82.0W 3.5-5.3 BAAAA  Costa Rica                 

P: 24JAN2021 130544     9.0N   83.0W 3.5-5.1 BAAAA  Costa Rica                 

 

O: 20JAN2021 09:06:31  11.7N   87.2W mb=4.2  EMSC   NEAR COAST OF NICARAGUA      

P: 23JAN2021 130591    11.0N   87.0W 3.5-5.3 AAAAA  Nicaragua                  

 

O: 20JAN2021 22:49:26  15.0S   75.6W mb=4.8  EMSC   NEAR COAST OF CENTRAL PERU   

P: 17JAN2021 130475    15.0S   73.0W 4.0-5.8 BABAA  Central Peru               

P: 23JAN2021 130762    15.0S   73.0W 4.0-5.8 BABAA  Central Peru               

 

O: 21JAN2021 01:54:20  15.6N   96.3W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 19JAN2021 130270    16.0N   95.0W 3.5-5.4 AAAAA  Chiapas, Mexico            

P: 21JAN2021 130595    15.0N   96.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 21JAN2021 03:03:07  17.3N  101.1W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 25JAN2021 130589    17.0N  102.0W 3.5-5.1 BAAAA  Michoacan, Mexico          

 

O: 21JAN2021 02:29:48  18.7N   69.0W Md=4.0  EMSC   DOMINICAN REPUBLIC           

P: 16JAN2021 130292    18.0N   69.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 21JAN2021 06:01:27  18.8N   67.3W Md=3.2  EMSC   PUERTO RICO REGION           

P: 19JAN2021 130291    18.0N   66.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O: 20JAN2021 13:11:30  19.3N   65.1W Md=3.2  EMSC   VIRGIN ISLANDS REGION        

P: 19JAN2021 130297    20.0N   66.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O: 20JAN2021 21:18:31  20.2N   71.0W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION

O: 20JAN2021 15:07:43  20.3N   70.9W ML=3.6  EMSC   DOMINICAN REPUBLIC REGION

O: 20JAN2021 18:15:25  20.3N   70.9W ML=4.0  EMSC   DOMINICAN REPUBLIC REGION

O: 20JAN2021 20:12:14  20.3N   70.8W ML=3.6  EMSC   DOMINICAN REPUBLIC REGION

O: 20JAN2021 21:13:02  20.3N   71.0W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION

O: 20JAN2021 21:59:48  20.3N   70.8W ML=3.5  EMSC   DOMINICAN REPUBLIC REGION

O: 20JAN2021 22:30:13  20.3N   70.8W ML=3.4  EMSC   DOMINICAN REPUBLIC REGION

O: 21JAN2021 00:30:08  20.3N   70.9W ML=3.5  EMSC   DOMINICAN REPUBLIC REGION

O: 20JAN2021 20:41:32  20.5N   70.9W ML=3.3  EMSC   DOMINICAN REPUBLIC REGION

O: 21JAN2021 03:55:17  20.5N   70.9W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION

O: 20JAN2021 19:26:05  19.5N   70.2W ML=3.2  EMSC   DOMINICAN REPUBLIC           

P: 19JAN2021 130298    20.0N   71.0W 3.0-4.7 AAAAA  Bahamas/No. Caribbean      

 

O: 21JAN2021 06:26:03  24.2S   67.3W ML=3.9  EMSC   SALTA, ARGENTINA             

P: 20JAN2021 130494    24.0S   67.0W 4.0-5.8 AAAAA  Argentina                  

 

O: 20JAN2021 14:59:48  26.4N  111.0W Mw=5.2  EMSC   GULF OF CALIFORNIA

O: 20JAN2021 07:48:07  26.0N  110.5W ML=4.2  EMSC   GULF OF CALIFORNIA           

P: 19JAN2021 130302    28.0N  112.0W 3.5-4.9 ABBAA  Gulf of California         

 

O: 20JAN2021 22:59:12  15.0S   75.6W Mw=5.5  EMSC   NEAR COAST OF CENTRAL PERU

O: 20JAN2021 23:09:16  15.0S   75.6W Mw=5.3  EMSC   NEAR COAST OF CENTRAL PERU

O: 21JAN2021 00:27:45  15.0S   75.6W mb=4.8  EMSC   NEAR COAST OF CENTRAL PERU

O: 20JAN2021 22:27:42  15.1S   75.7W Mw=5.1  EMSC   NEAR COAST OF CENTRAL PERU

O: 20JAN2021 22:49:26  15.0S   75.6W mb=4.8  EMSC   NEAR COAST OF CENTRAL PERU   

P: 17JAN2021 130475    15.0S   73.0W 4.0-5.8 BABAA  Central Peru               

P: 23JAN2021 130762    15.0S   73.0W 4.0-5.8 BABAA  Central Peru               

 

AFRICA AND EUROPE

 

O: 21JAN2021 04:47:03   8.9S   31.3E mb=4.2  EMSC   LAKE TANGANYIKA REGION       

P: 26JAN2021 130557     6.0S   30.0E 3.0-4.6 BCAAA  Lake Victoria area         

 

O: 20JAN2021 13:08:24  38.5N   29.6W ML=3.3  EMSC   AZORES ISLANDS, PORTUGAL     

P: 23JAN2021 130654    38.0N   32.0W 4.0-5.9 BABAA  No. Mid-Atlantic Ridge     

 

O: 20JAN2021 20:35:39  36.1N   28.2E ML=4.0  EMSC   DODECANESE IS.-TURKEY BORDER R

P: 27JAN2021 130622    37.0N   26.0E 3.0-4.7 CABAA  Aegean Sea                 

 

O: 20JAN2021 23:37:59  37.9N   26.8E mb=4.6  EMSC   DODECANESE ISLANDS, GREECE   

P: 18JAN2021 130316    38.0N   26.0E 3.0-4.6 AAAAA  Aegean Sea                 

 

NEIC reported this earthquake of M 4.6 in the Dodecanese Islands, Greece was felt with intensity II-III in the area(s) of the Dodecanese Islands, Greece with V in Soke, Aydin, Turkey; IV in Aydin, Turkey and Marathokambos, Samos, Greece and III in Izmir, Turkey and Kokkarion, Samos, Greece.

 

O: 20JAN2021 07:30:26  47.6N   14.4E ML=4.2  EMSC   AUSTRIA                      

P: 14JAN2021 130382    46.0N   13.0E 3.0-5.2 CBAAA  Austria                    

 

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

 

SOUTHWEST PACIFIC

 

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

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 20JAN2021 16:35:51  46.4S  165.7E ML=3.7  EMSC   OFF W. COAST OF S. ISLAND, N.Z.

O: 20JAN2021 21:24:13  46.0S  166.9E ML=3.8  EMSC   OFF W. COAST OF S. ISLAND, N.Z

P: 17JAN2021 130521    45.0S  168.0E 3.0-5.4 BAAAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

O: 20JAN2021 21:02:30  24.4N  123.4E ML=4.2  EMSC   SOUTHWESTERN RYUKYU ISL., JAPA

P: 20JAN2021 130310    25.0N  123.0E 4.0-5.4 AAAAA  Ryukyu Islands             

 

O: 20JAN2021 23:16:33  49.4N  158.2E mb=4.1  EMSC   EAST OF KURIL ISLANDS        

P: 26JAN2021 130706    49.0N  156.0E 3.5-5.6 CABAA  NE Pacific                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 20JAN2021 16:31:57  33.9N  118.3W ML=3.3  EMSC   GREATER LOS ANGELES AREA, CALI

P: 23JAN2021 130671    33.9N  118.3W 2.5-4.6 BAAAA  So. California             

 

O: 21JAN2021 02:25:01  35.5N  118.1W ML=2.1  EMSC   CENTRAL CALIFORNIA

O: 21JAN2021 01:01:02  35.7N  117.5W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 21JAN2021 01:22:24  36.0N  117.9W ML=3.2  EMSC   CENTRAL CALIFORNIA

O: 21JAN2021 01:23:54  36.0N  117.9W ML=3.1  EMSC   CENTRAL CALIFORNIA

O: 21JAN2021 04:13:29  36.2N  118.1W ML=2.3  EMSC   CENTRAL CALIFORNIA           

P: 20JAN2021 130364    35.9N  117.7W 2.5-4.4 AAAAA  So. California             

 

NEIC reported these earthquakes of M 3.2 and 3.5 in Ridgecrest, California were felt with intensity II-III in the area(s) of Ridgecrest, California at Inyokeren, East Tulare County, Trona, California Hot Springs.

 

O: 21JAN2021 00:52:26  36.6N  121.2W Md=2.4  EMSC   CENTRAL CALIFORNIA            

P: 19JAN2021 130325    36.4N  121.0W 2.5-5.1 AAAAA  Central California         

 

O: 20JAN2021 23:36:16  37.0N  121.6W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 16JAN2021 130326    37.3N  121.6W 2.5-4.9 BAAAA  Central California         

P: 22JAN2021 130634    37.2N  122.1W 2.5-4.6 AAAAA  Central California         

 

O: 20JAN2021 11:14:08  37.4N  118.4W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 24JAN2021 130626    37.5N  118.6W 2.5-4.6 BAAAA  California/Nevada area     

 

O: 20JAN2021 22:31:43  37.8N  122.6W Md=2.0  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 22JAN2021 130634    37.2N  122.1W 2.5-4.6 AAAAA  Central California         

P: 24JAN2021 130634    37.9N  122.0W 2.5-4.5 BAAAA  Central California         

 

O: 20JAN2021 20:48:29  37.9N  118.6W MD=2.0  EMSC   CENTRAL CALIFORNIA           

O: 20JAN2021 11:54:16  37.9N  118.6W ml=2.2  EMSC   CENTRAL CALIFORNIA           

P: 16JAN2021 130322    38.0N  118.8W 2.5-4.6 BAAAA  California/Nevada area     

 

O: 21JAN2021 05:18:49  38.2N  117.8W ml=2.4  EMSC   NEVADA

O: 21JAN2021 06:23:52  38.2N  117.7W ml=2.2  EMSC   NEVADA

O: 20JAN2021 20:15:34  38.3N  117.1W ml=2.0  EMSC   NEVADA

O: 20JAN2021 08:40:57  38.2N  118.1W ml=2.1  EMSC   NEVADA                       

P: 18JAN2021 130322    38.0N  118.0W 2.5-4.6 AAAAA  California/Nevada area     

 

ALASKA

 

O: 20JAN2021 08:22:18  54.5N  159.7W ML=3.2  EMSC   SOUTH OF ALASKA              

P: 17JAN2021 130430    54.9N  159.7W 3.5-4.9 BAAAA  Alaska Peninsula           

 

O: 21JAN2021 02:53:24  57.2N  146.3W ML=3.0  EMSC   GULF OF ALASKA               

P: 15JAN2021 130450    55.0N  149.0W 3.0-4.9 CCBAA  South of  Alaska           

 

O: 21JAN2021 00:55:49  61.3N  149.8W ML=3.2  EMSC   SOUTHERN ALASKA              

P: 23JAN2021 130749    61.1N  151.4W 3.2-5.1 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 Anchorage, Wasilla, Chugiak, Eagle River and Girdwood.

 

O: 21JAN2021 05:49:44  62.2N  151.1W ML=3.1  EMSC   CENTRAL ALASKA               

P: 23JAN2021 130752    62.8N  149.1W 3.2-5.1 AAAAA  Central Alaska             

P: 25JAN2021 130749    61.3N  150.9W 3.2-5.2 BAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 20JAN2021 13:54:51  62.3N  124.3W ML=3.2  EMSC   NORTHWEST TERRITORIES, CANADA

O: 20JAN2021 13:54:51  62.3N  124.3W MB=3.2  ECAN Wrigley, NT    

P: 21JAN2021 130756    62.1N  124.2W 2.5-4.1 AAAAA  Northwest Terr., Canada    

 

O: 20JAN2021 11:46:17  47.6N  129.0W MB=3.4  ECAN Tofino, BC                     

P: 22JAN2021 130723    48.9N  129.3W 2.8-5.1 ABAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 20JAN2021 08:22:01  31.7N  104.4W mb=3.1  EMSC   WESTERN TEXAS                

P: 12JAN2021 130355    32.5N  104.6W 2.0-4.1 CAAAA  SW U.S.A                   

 

NEIC reported this earthquake of M 3.1 in Western Texas was felt with intensity II-III in the area(s) of Western Texas at El Paso.

 

O: 21JAN2021 03:43:25  42.5N  110.3W ML=2.6  EMSC   WYOMING                      

P: 23JAN2021 130727    43.2N  111.0W 2.0-3.9 AAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O: 20JAN2021 07:33:51  31.6N   89.5W Md=2.1  EMSC   MISSISSIPPI                  

P: 16JAN2021 130368    34.0N   85.0W 2.0-4.0 BCCAA  Southeast U.S.             

 

O: 20JAN2021 07:56:34  36.3N   97.5W ML=2.1  EMSC   OKLAHOMA                     

P: 18JAN2021 130369    36.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 20JAN2021 02:25:39  45.9N   80.8W MB=2.3  ECAN Wikwemikong, ON                

P: 25JAN2021 130714    46.0N   81.0W 2.0-4.0 BAAAA  Ohio/Lake Erie             

 

O: 19JAN2021 21:18:42  47.5N   48.0W MB=4.1  ECAN St. John's, NL                 

 

O: 19JAN2021 11:53:48  73.2N   95.9W MB=2.3  ECAN Fort Ross, NU                  

O: 19JAN2021 11:42:00  73.2N   95.8W MB=3.2  ECAN Fort Ross, NU   

 

HAWAII

 

O: 20JAN2021 08:55:46  19.1N  155.5W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P: 18JAN2021 130276    18.8N  155.2W 3.0-4.5 AAAAA  Hawaii                     

 

STRONG GAMMA RAY BURST ASSOCIATED WITH M 6.5 IN ARGENTINA

 

EARTHQUAKE SUMMARY FOR JANUARY 19, 2021

 

Moderate aftershocks continued to be felt in the San Juan, Argentina area today.

The strong, damaging earthquake in San Juan, Argentina early on the morning of January 19, 2021 was probably promoted by effects from a strong GRB, the first since January 12. This GRB was first observed within about 10 minutes of the earthquake in Argentina (02:54 UT vs 02:46 UT) as noted in the EXTERNAL FIELDS section of this report with the following preliminary SWIFT parameters:

 

"The last major Gamma Ray Burst (GRB) according to the online NASA Swift GRB Catalog was observed on January  19, 2021 at 02:54 UT with BAT Fluence n/a erg/sqcm. (MAGNITUDE: n/a), Associated earthquake: San Juan Argentina 02:46 UT M 6.4)" (January 19, 2021)

 

This summary noted in regard to the Argentina event earlier today:

 

"No major damage was reported. The only similar earthquake in San Juan, Argentina with M>=6.4 in the past 30 years was an M 6.4 on November 20, 2016. That event occurred at an intermediate depth of 116 km but today's event at 5-10 km depth is an unusual shallow focus. The last such event at shallow focus of M>=6 within about 250 km of today's events was an M 6.0 on February 27, 2010, the only such event in the region in the past 30 years. Today's event which occurred near local midnight (at 23:50) was probably promoted by strong tidal stresses associated with the new moon of January 13" (January 18-19, 2021)

 

 

O: 19JAN2021 07:45:50  31.8S   68.8W ML=3.9  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 23:48:29  31.8S   68.8W ML=4.0  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 17:56:17  31.9S   69.0W ML=4.0  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 03:37:48  31.8S   68.7W mb=5.3  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 03:51:53  31.8S   68.9W mb=4.9  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 04:01:42  31.8S   68.8W mb=4.8  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 03:03:43  31.9S   68.8W mb=4.9  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 02:46:21  31.8S   68.8W Mw=6.4  EMSC   SAN JUAN, ARGENTINA          

O: 19JAN2021 02:46     31.8S   69.1W mb=6.5  GUC    Coquimbo at Illapel, Paiguano,

O: 20JAN2021 04:07:48  31.9S   69.0W mb=4.4  EMSC   SAN JUAN, ARGENTINA          

P: 14JAN2021 130507    31.0S   71.0W 4.0-5.9 BABAA  Central Chile              

 

The strongest earthquake in the U.S. or Canada today was an M 3.8 in the Alaska Peninsula aftershock zone. The last earthquake within about 100 km of this epicenter with M >=3.8 was an M 4.7 on December 25, 2020 but more recent events of similar magnitude have occurred on January 4 (M 3.5) and January 14 (M 3.7). Forecast 130430 had expected today's activity was likely around January 17.

 

O: 20JAN2021 02:06:50  54.9N  160.3W ml=3.8  EMSC   ALASKA PENINSULA              

P: 17JAN2021 130430    54.9N  159.7W 3.5-4.9 AAAAA  Alaska Peninsula           

 

An M 3.6 in the Mayotte Region north of Madagascar today renewed seismicity in that region. A similar M 3.6-3.7 quake hit the region on January 13, 2021, the such event in the past two months since an M 3.9 on November 22, an M 4.8 on November 10 and an M 4.5 on September 25, 2020. Throughout the first eight months of 2020 Mayotte was active with a moderate event nearly every week. Today's earthquake occurred as Tropical Storm Eloise made landfall in the area and had been expected in this summary as a possible consequence of that landfall as:

 

"Tropical Cyclone Eloise continued today east of Madagascar with winds up to 65 kts. It is expected to track to the east over the next several days possibly enhancing seismicity in the Mayotte area." (January 18-19, 2021)

 

Forecast 130478 had expected today's event in the Mayotte or Madagascar area in mid-January. This epicenter is at 104 degrees from the Los Lagos, Chile M 6.7 of December 27, 2020 and may have been promoted by energy from that source. Earthquakes in Vancouver, Canada were at a similar distance from Los Lagos.

 

O: 20JAN2021 04:07:12  12.8S   45.5E ML=3.6  EMSC   MAYOTTE REGION               

P: 14JAN2021 130478    13.0S   44.0E 3.0-4.4 CABAA  Madagascar 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: 19JAN2021 11:02:40  36.4N   71.0E mb=4.2  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 20JAN2021 130336    37.0N   71.0E 3.8-5.3 AAAAA  Hindu Kush/Pakistan        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 19JAN2021 07:26:12   2.0S  128.9E mb=4.7  EMSC   KEPULAUAN OBI, INDONESIA     

P: 20JAN2021 130232     1.0N  128.0E 4.0-5.4 CAAAA  Halmahera                  

 

O: 20JAN2021 04:28:53   6.0S  132.0E mb=4.8  EMSC   BANDA SEA                     

P: 18JAN2021 130264     5.0S  131.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O: 19JAN2021 20:10:59   8.8S  110.6E mb=4.6  EMSC   JAVA, INDONESIA              

P: 14JAN2021 130256     9.0S  111.0E 4.0-5.5 BAAAA  So. of Java                 

 

NEIC reported this earthquake of M 4.6 in Java, Indonesia  was felt with intensity II-III in the area(s) of  Java, Indonesia at Grogol.

 

O: 20JAN2021 01:27:58   9.1N  125.6E mb=4.7  EMSC   MINDANAO, PHILIPPINES        

O: 20JAN2021 00:14:24  10.4N  126.7E ML=4.3  EMSC   PHILIPPINE ISLANDS REGION    

O: 20JAN2021 06:53:12  10.5N  125.6E mb=4.9  EMSC   LEYTE, PHILIPPINES           

P: 16JAN2021 130279    11.0N  126.0E 3.5-5.2 AAAAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 4.7 in Northern Mindanao, Philippines was felt with intensity II-III in the area(s) of Northern Mindanao, Philippines with V in Calamba, Caraga and III in Butuan.

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 19JAN2021 09:16:52  14.4N   93.8W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 17JAN2021 130269    14.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 20JAN2021 06:25:55  15.9N   92.5W ML=4.3  EMSC   CHIAPAS, MEXICO              

P: 17JAN2021 130269    14.0N   93.0W 3.5-5.3 BBAAA  Chiapas, Mexico            

 

O: 19JAN2021 23:56:59  23.0S   66.4W mb=4.2  EMSC   JUJUY, ARGENTINA             

P: 20JAN2021 130494    24.0S   67.0W 4.0-5.8 AAAAA  Argentina                   

 

O: 19JAN2021 15:03:14  15.5N   95.1W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 19JAN2021 130270    16.0N   95.0W 3.5-5.4 AAAAA  Chiapas, Mexico            

 

NEIC reported this earthquake of M 4.1 in Oaxaca, Mexico was felt with intensity II-III in the area(s) of Oaxaca, Mexico at Puerto Escondido.

 

O: 19JAN2021 07:45:50  31.8S   68.8W ML=3.9  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 23:48:29  31.8S   68.8W ML=4.0  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 17:56:17  31.9S   69.0W ML=4.0  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 03:37:48  31.8S   68.7W mb=5.3  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 03:51:53  31.8S   68.9W mb=4.9  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 04:01:42  31.8S   68.8W mb=4.8  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 03:03:43  31.9S   68.8W mb=4.9  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 02:46:21  31.8S   68.8W Mw=6.4  EMSC   SAN JUAN, ARGENTINA          

O: 19JAN2021 02:46     31.8S   69.1W mb=6.5  GUC    Coquimbo at Illapel, Paiguano,

O: 20JAN2021 04:07:48  31.9S   69.0W mb=4.4  EMSC   SAN JUAN, ARGENTINA          

P: 14JAN2021 130507    31.0S   71.0W 4.0-5.9 BABAA  Central Chile              

 

O: 19JAN2021 22:57:27  23.4S   66.9W mb=4.3  EMSC   JUJUY, ARGENTINA

 

O: 20JAN2021 01:52:29  17.9N   67.0W Md=3.1  EMSC   PUERTO RICO REGION

O: 19JAN2021 18:25:03  18.2N   67.3W Md=3.0  EMSC   MONA PASSAGE, PUERTO RICO

O: 19JAN2021 13:55:16  17.9N   67.0W ML=3.0  EMSC   PUERTO RICO REGION           

P: 19JAN2021 130291    18.0N   66.0W 3.4-5.0 AAAAA  Puerto Rico                 

 

O: 19JAN2021 13:31:36  19.0N   65.3W ML=3.5  EMSC   PUERTO RICO REGION

O: 19JAN2021 09:36:47  19.1N   64.8W Md=3.3  EMSC   VIRGIN ISLANDS REGION

O: 20JAN2021 05:48:31  19.2N   64.9W Md=3.4  EMSC   VIRGIN ISLANDS REGION

O: 20JAN2021 06:29:08  19.2N   65.0W Md=3.3  EMSC   VIRGIN ISLANDS REGION

O: 20JAN2021 06:50:38  19.2N   64.8W Md=3.5  EMSC   VIRGIN ISLANDS REGION

O: 20JAN2021 05:18:55  19.3N   65.0W Md=3.5  EMSC   VIRGIN ISLANDS REGION        

P: 19JAN2021 130297    20.0N   66.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O: 19JAN2021 09:57:38  19.3N   70.6W ML=3.2  EMSC   DOMINICAN REPUBLIC

O: 19JAN2021 08:29:01  20.1N   70.6W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 19JAN2021 130298    20.0N   71.0W 3.0-4.7 AAAAA  Bahamas/No. Caribbean      

 

O: 19JAN2021 16:55:53  15.6N   94.8W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O: 20JAN2021 05:16:58  15.8N   94.3W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO

O: 19JAN2021 07:28:23  15.9N   95.3W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O: 19JAN2021 12:12:14  15.9N   97.3W mb=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13JAN2021 130289    15.0N   96.0W 3.5-5.4 CAAAA  Oaxaca, Mexico             

 

AFRICA AND EUROPE

 

O: 20JAN2021 04:07:12  12.8S   45.5E ML=3.6  EMSC   MAYOTTE REGION               

P: 14JAN2021 130478    13.0S   44.0E 3.0-4.4 CABAA  Madagascar area            

 

O: 20JAN2021 02:39:08  41.0N   20.4E mb=4.4  EMSC   ALBANIA                      

P: 15JAN2021 130417    41.0N   20.0E 3.0-5.5 BAAAA  Romania/NW Turkey          

 

NEIC reported this earthquake of M 4.4 in Albania was felt with intensity II-III in the area(s) of Albania in Ohrid, Macedonia.

 

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

 

SOUTHWEST PACIFIC

 

O: 19JAN2021 20:18:20  13.4S  166.8E Mw=5.1  EMSC   VANUATU                      

P: 14JAN2021 130491    13.0S  167.0E 4.0-5.8 BAAAA  Vanuatu Islands            

 

O: 19JAN2021 10:47:58  15.4S  173.5W mb=4.5  EMSC   TONGA                        

O: 19JAN2021 09:24:32  15.9S  173.9W mb=4.8  EMSC   TONGA                        

P: 19JAN2021 130481    15.0S  175.0W 4.0-5.6 AAAAA  Samoa Islands              

 

O: 20JAN2021 05:01:39  17.7S  178.7W mb=4.5  EMSC   FIJI REGION                  

P: 16JAN2021 130488    17.0S  178.0W 4.0-5.4 BAAAA  Tonga Islands              

 

O: 19JAN2021 11:57:35  21.2S  178.6W mb=4.6  EMSC   FIJI REGION                  

P: 15JAN2021 130506    23.0S  180.0W 4.0-5.6 BBAAA  Tonga Islands              

 

O: 20JAN2021 01:38:47  22.0S  169.9E mb=4.8  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 19JAN2021 130497    21.0S  169.0E 4.0-5.4 AAAAA  Loyalty Islands            

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 19JAN2021 16:56:17  38.0S  178.2E ML=3.6  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 12JAN2021 130512    38.0S  179.0E 3.0-4.7 CAAAA  North Island, N.Z.         

 

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: 19JAN2021 07:08:30  39.1N  142.1E ML=3.5  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 17JAN2021 130387    40.0N  144.0E 3.5-5.7 AABAA  Hokkaido, Japan            

 

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

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 19JAN2021 10:02:16  31.5N  115.6W ML=3.8  EMSC   BAJA CALIFORNIA, MEXICO      

O: 19JAN2021 10:36:49  31.5N  115.6W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO

P: 14JAN2021 130358    31.7N  116.3W 2.5-4.6 BAAAA  So. California             

 

O: 19JAN2021 16:48:38  32.8N  115.7W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 15JAN2021 130359    32.8N  115.4W 2.5-4.6 BAAAA  So. California             

 

O: 20JAN2021 00:18:51  35.8N  117.6W Ml=2.6  EMSC   CENTRAL CALIFORNIA           

P: 20JAN2021 130364    35.9N  117.7W 2.5-4.4 AAAAA  So. California             

 

O: 19JAN2021 15:14:13  36.7N  121.1W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 15JAN2021 130326    36.8N  121.3W 2.5-5.0 BAAAA  Central California         

P: 19JAN2021 130325    36.4N  121.0W 2.5-5.1 AAAAA  Central California         

 

O: 20JAN2021 04:18:38  37.4N  121.7W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 16JAN2021 130326    37.3N  121.6W 2.5-4.9 BAAAA  Central California         

 

O: 19JAN2021 13:22:05  37.8N  122.6W Md=2.3  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 19JAN2021 130328    38.5N  122.7W 2.5-4.6 AAAAA  Central California         

 

O: 20JAN2021 05:01:20  38.2N  117.9W ml=2.0  EMSC   NEVADA

O: 19JAN2021 17:03:16  38.2N  117.9W ml=2.1  EMSC   NEVADA                       

P: 18JAN2021 130322    38.0N  118.0W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 20JAN2021 03:41:18  40.6N  121.7W MD=2.1  EMSC   NORTHERN CALIFORNIA          

P: 16JAN2021 130407    40.2N  121.2W 2.5-4.6 BAAAA  Northern California        

 

ALASKA

 

O: 20JAN2021 02:06:50  54.9N  160.3W ml=3.8  EMSC   ALASKA PENINSULA             

P: 17JAN2021 130430    54.9N  159.7W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O: 19JAN2021 10:46:06  58.8N  137.7W ML=3.0  EMSC   SOUTHEASTERN ALASKA          

O: 19JAN2021 10:46:06  58.8N  137.7W MB=3.0  ECAN Yakutat, AK    

P: 17JAN2021 130449    59.0N  136.0W 3.0-4.9 AAAAA  Southeast Alaska           

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 19JAN2021 08:47:58  48.8N  129.2W MB=3.5  ECAN Port Alice, BC   

O: 19JAN2021 06:11:25  49.1N  128.5W MB=3.3  ECAN Port Alice, BC   

O: 18JAN2021 21:36:01  47.6N  129.3W MB=3.4  ECAN Tofino, BC                     

P: 13JAN2021 130423    48.7N  129.0W 2.8-5.0 BAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 19JAN2021 14:35:18  32.2N  102.1W mb=2.5  EMSC   WESTERN TEXAS                

P: 12JAN2021 130355    32.6N  101.6W 2.0-4.0 CAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 19JAN2021 22:15:21  36.7N   97.7W ML=2.1  EMSC   OKLAHOMA                     

P: 18JAN2021 130369    36.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 19JAN2021 09:35:16  49.6N   66.9W MB=2.0  ECAN Port-Cartier, QC               

P: 14JAN2021 130386    49.0N   66.0W 2.0-4.3 BAAAA  E. of Maine                

 

O: 19JAN2021 07:10:17  72.4N   76.3W MB=2.0  ECAN Pond Inlet, NU                 

P: 15JAN2021 130470    73.3N   73.5W 2.5-4.1 BAAAA  Baffin/Davis Strait Canada 

P: 20JAN2021 130470    71.0N   75.0W 2.5-4.0 BBAAA  Baffin/Davis Strait Canada 

 

O: 19JAN2021 05:52:45  73.2N   95.6W MB=2.4  ECAN Fort Ross, NU                  

 

O: 18JAN2021 23:43:14  49.1N   67.6W MB=2.0  ECAN Matane, QC                     

P: 14JAN2021 130394    49.3N   67.5W 2.0-3.9 BAAAA  Maine                      

 

HAWAII

 

O: 19JAN2021 14:42:14  19.3N  155.5W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII     

P: 18JAN2021 130276    18.8N  155.2W 3.0-4.5 AAAAA  Hawaii                     

 

STRONG QUAKE SHAKES CHILE AND ARGENTINA

 

EARTHQUAKE SUMMARY FOR JANUARY 18, 2021

 

A strong M 6.4-6.8 earthquake was widely felt in Chile and Argentina today. It was reported by NEIC to have been felt with maximum intensity VI in Argentina at San Juan; V in San Martin, Mendoza and IV in Mendoza. In Chile it was reported with V in Llaillay, Valparaiso; IV in Valparaiso at San Felipe, La Ligua, Calera and in Santiago with lesser shaking of III in Los Andes, Cabildo, Valparaiso. GUC reported it at M 6.5 and that it was felt with intensity  V in  Coquimbo at Illapel, Paiguano, Vicuna; IV in Salamanca, Monte Patria, La Serena, Combarbala, III in Andocollo, Coquimbo, La Higuera, Ovalle, Rio Hurtado and II in Canela, Los Vilos, in Atacama with IV in Alto del Carmen; III in Copiaopo, Freirina, Tierra Amarilla, Vallenar and II in Huasco; in Valparaiso with V in La Lgua, Quilpue, Valparaiso, Zapallar; IV in Catemu, El Tabo, San Antonio, San Felipe, Santa Maria, Villa Alemana and III in Casablanca; in Santiago with V in Macul, Melipilla, and San Jose de Maipo; IV in El Bosque, Las Condes, Pedro Aguirre Cerda, Penalolen, Providencia, Pudahuel, Quinto Normal and III in La Florida, Maipu, Santiago and II in Puente Alto and Recoleta; in O'Higgins with IV in Mostazal, Rancagua and III in Chepica, Lolol, Peumo, Santa Cruz and in Maule with III in Curico, Rauco and II in Pencahue and Sagrada Familia, Chile. No major damage to people or services was reported by GUC. No tsunami was reported. Aftershocks of M 5.3, 4.8 and 4.9 were also felt in the area. Authorities in the area reported no injuries but damage impacted streets and highways in San Juan.

Some locations saw power cuts and damage occurred to homes in the town of Caucete with others evacuated in Zonda, San Juan. No major damage was reported. The only similar earthquake in San Juan, Argentina with M>=6.4 in the past 30 years was an M 6.4 on November 20, 2016. That event occurred at an intermediate depth of 116 km but today's event at 5-10 km depth is an unusual shallow focus. The last such event at shallow focus of M>=6 within about 250 km of today's events was an M 6.0 on February 27, 2010, the only such event in the region in the past 30 years. Today's event which occurred near local midnight (at 23:50) was probably promoted by strong tidal stresses associated with the new moon of January 13 as reported in the forecast for tidal triggering with that alignment in previous issues as:

 

"The new moon will arrive at 05:00 UT on January 13. Longitudes which are at sub-lunar conditions (local solar midnight) at this time are near 75 West and those at sub-solar conditions (local solar noon) are near 105 East. These include in the west, the west coast of South America and eastern North America and in the east western and central Indonesia, the Philippines and Taiwan among others. These areas are most likely to see tidally enhanced seismicity in the next week through January 17, 2021. Tidal enhancement is most likely near local solar noon and midnight. A strong global earthquake is likely in this period." (January 8-12, 2021)

 

An M 4.4 to the west occurred several hours earlier and was reported with maximum intensity IV in Santiago and Coquimbo, Chile and III in San Felipe and Lampa, Chile and III in Mendoza, Argentina. A moderate foreshock hit the same area of Argentina on January 16, 2021. This event of M 4.9 - also near local solar midnight. A larger M 6.1 occurred in Jujuy, Argentina on January 10, 2021 near local solar midnight and was reported here at the time as:

 

"The M 6.1 in northern Argentina was reported by NEIC to have been felt with intensity VI in Salta, Argentina; IV in Antofagasta, Chile and II in Iquique, Tarapaca, Chile. It was preceded by an M 4.5 foreshock that was felt with intensity III in Antofagasta. GUC reported this earthquake was felt with intensity  IV in  Antofagasta at Antofagasta, Calams, Mejillones and III in Taltal, Tocopilla; in Tarapaca with III in Iquique and II in El Loa, La Tirana, Pica, Pozo Almonte; and in Atacama with IV in Chararal, Diego de Almagro, El Salvador and III in Copiapo and Tierra Amarillo, Chile. This is the strongest earthquake within about 250 km of this epicenter since an M 6.3 on November 20, 2020 and prior to that an M 6.3 on April 15, 2017. ... The quake occurred within about 30 minutes of local solar midnight and may have been enhanced by strong tidal stresses which are maximized at this hour. Maximum stress with the next full moon on January 13 is near this longitude as noted in the tidal forecast" (January 10-11, 2021)

 

Forecast 130507 had expected seismic activation in mid-January about 150 km west of today's epicenter was likely.

 

O: 19JAN2021 03:37:48  31.8S   68.7W mb=5.3  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 03:51:53  31.8S   68.9W mb=4.9  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 04:01:42  31.8S   68.8W mb=4.8  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 03:03:43  31.9S   68.8W mb=4.9  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 02:46:21  31.8S   68.8W Mw=6.4  EMSC   SAN JUAN, ARGENTINA          

O: 19JAN2021 02:46     31.8S   69.1W mb=6.5  GUC    Coquimbo at Illapel, Paiguano,

P: 14JAN2021 130507    31.0S   71.0W 4.0-5.9 BABAA  Central Chile              

 

Another M 4.4 occurred earlier in the day in the Yellow Sea of China near South Korea. It was reported felt in South Korea at Taech on Chungchongnam, Mokpo, Cholianam, Haenam, Onyang, Suigen Kyonggi, Seoul, Hwado, Gumi, Changsungoo and Gyeongju with intensity III-IV. This epicenter is in the antipodal area of the later M 6.4 in Argentina. This is the strongest earthquake within about 250 km of this epicenter near South Korea since an M 4.8 near this epicenter on April 20, 2013. Forecast 130400 had expected activation in this area to the northeast around January 20.

 

O: 18JAN2021 18:21:27  35.8N  124.1E mb=4.4  EMSC   YELLOW SEA                    

P: 20JAN2021 130400    41.0N  129.0E 3.5-5.4 ACCAA  NE China                   

 

The strongest activity in the U.S. or Canada today occurred in the region of the Alaska Peninsula with M 4.0 and 3.9. These are not uncommon events in this region of aftershocks of the M 76. of October 19, 2020 and were not reported felt in this area. They had been expected at this time in  forecasts 130430 and 130457.

 

O: 19JAN2021 02:24:15  54.6N  159.6W ml=3.9  EMSC   SOUTH OF ALASKA              

P: 17JAN2021 130430    54.9N  159.7W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O: 18JAN2021 21:43:20  58.3N  156.2W mb=4.0  EMSC   ALASKA PENINSULA             

P: 18JAN2021 130457    60.1N  153.4W 3.2-4.9 ABBAA  Central Alaska             

 

The most widely felt earthquake in the U.S. today was an M 2.7 north of San Francisco. NEIC reported this earthquake of M 2.7 north of San Francisco, California  was felt with intensity II-III in the area(s) north of San Francisco, California in Santa Rosa, Fulton, Windsor, Rohnert Park and Sebastopol. This appears to be part of a regional activation of the past several days which now appears to be diminishing. Forecast 130328 had expected today's event around January 19.

 

O: 19JAN2021 04:22:20  38.5N  122.7W Md=2.7  EMSC   NORTHERN CALIFORNIA          

P: 19JAN2021 130328    38.5N  122.7W 2.5-4.6 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: 18JAN2021 16:03:11  28.2N   56.0E mb=4.5  EMSC   SOUTHERN IRAN                

P: 17JAN2021 130312    28.0N   55.0E 3.5-4.9 AAAAA  So. Iran/Persian Gulf      

 

O: 18JAN2021 18:21:27  35.8N  124.1E mb=4.4  EMSC   YELLOW SEA                   

P: 20JAN2021 130400    41.0N  129.0E 3.5-5.4 ACCAA  NE China                   

 

O: 18JAN2021 19:15:01  51.2N  100.4E mb=4.3  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 BABAA  So. Siberia                

 

O: 18JAN2021 18:46:12  58.0N  126.3E mb=4.7  EMSC   SOUTHWESTERN SAKHA, RUSSIA   

P: 13JAN2021 130448    57.0N  121.0E 3.0-4.6 BACAA  So. Siberia                

 

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

 

INDONESIA AND PHILIPPINES

 

O: 19JAN2021 00:56:43   0.0N  120.2E mb=4.9  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 15JAN2021 130225     1.0N  120.0E 4.0-5.4 BAAAA  Celebes Sea                

P: 16JAN2021 130260     1.0S  120.0E 4.0-5.5 BAAAA  Sulawesi area              

 

O: 19JAN2021 05:19:43   0.2S  124.8E ML=4.6  EMSC   MOLUCCA SEA                  

P: 19JAN2021 130261     2.0S  124.0E 4.0-5.4 ABAAA  Sulawesi area              

 

O: 18JAN2021 11:43:53   7.2N   94.7E mb=4.8  EMSC   NICOBAR ISLANDS, INDIA REGION

P: 13JAN2021 130235     9.0N   94.0E 4.0-5.6 BBAAA  Nicobar Islands            

 

O: 19JAN2021 05:01:03   7.3S  125.4E Mw=5.4  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 17JAN2021 130239     7.0S  126.0E 4.0-5.5 AAAAA  Banda Sea                  

 

O: 19JAN2021 06:32:52  11.5S  116.5E ML=4.6  EMSC   SOUTH OF LOMBOK, INDONESIA   

O: 18JAN2021 21:33:52  11.5S  117.8E ML=4.5  EMSC   SOUTH OF SUMBAWA, INDONESIA  

P: 18JAN2021 130486    10.0S  116.0E 4.0-5.4 ABAAA  Sumbawa Island area        

 

 

CENTRAL AND SOUTH AMERICA

 

O: 19JAN2021 03:37:48  31.8S   68.7W mb=5.3  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 03:51:53  31.8S   68.9W mb=4.9  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 04:01:42  31.8S   68.8W mb=4.8  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 03:03:43  31.9S   68.8W mb=4.9  EMSC   SAN JUAN, ARGENTINA

O: 19JAN2021 02:46:21  31.8S   68.8W Mw=6.4  EMSC   SAN JUAN, ARGENTINA          

O: 19JAN2021 02:46     31.8S   69.1W mb=6.5  GUC    Coquimbo at Illapel, Paiguano,

P: 14JAN2021 130507    31.0S   71.0W 4.0-5.9 BABAA  Central Chile              

 

O: 18JAN2021 22:05:33  13.7N   92.2W ML=4.0  EMSC   OFFSHORE GUATEMALA           

P: 17JAN2021 130269    14.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 18JAN2021 17:47:30  11.3N   85.6W ML=4.2  EMSC   NICARAGUA                    

P: 15JAN2021 130285    11.0N   86.0W 3.5-5.5 BAAAA  Nicaragua                  

 

O: 18JAN2021 22:30:58  17.3N  101.1W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO

O: 18JAN2021 20:58:44  17.3N  101.1W ML=4.6  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 12JAN2021 130283    17.0N  101.0W 3.5-5.3 CAAAA  Michoacan, Mexico          

P: 18JAN2021 130290    16.0N  100.0W 3.5-5.4 ABAAA  Oaxaca, Mexico             

 

O: 18JAN2021 19:01:23  17.9N   66.9W Md=3.3  EMSC   PUERTO RICO REGION           

P: 19JAN2021 130291    18.0N   66.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O: 19JAN2021 05:31:44  19.2N   64.9W Md=3.7  EMSC   VIRGIN ISLANDS REGION

O: 19JAN2021 04:51:21  19.1N   64.9W Md=3.6  EMSC   VIRGIN ISLANDS REGION

O: 19JAN2021 05:34:50  19.1N   65.2W Md=3.4  EMSC   PUERTO RICO REGION

O: 18JAN2021 23:10:52  18.9N   64.8W Md=3.4  EMSC   VIRGIN ISLANDS REGION        

O: 19JAN2021 04:20:42  19.2N   64.9W Md=3.4  EMSC   VIRGIN ISLANDS REGION         

P: 19JAN2021 130297    20.0N   66.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O: 18JAN2021 15:25:19  23.0S   66.7W mb=4.5  EMSC   JUJUY, ARGENTINA             

P: 20JAN2021 130494    24.0S   67.0W 4.0-5.8 AAAAA  Argentina                  

 

O: 18JAN2021 22:57:04  32.0S   70.1W mb=4.4  EMSC   SAN JUAN, ARGENTINA          

P: 14JAN2021 130507    31.0S   71.0W 4.0-5.9 BAAAA  Central Chile              

 

AFRICA AND EUROPE

 

O: 19JAN2021 00:41:08  37.1N   29.1E ML=4.1  EMSC   WESTERN TURKEY                

P: 13JAN2021 130373    36.0N   29.0E 3.5-5.4 CBAAA  Turkey                     

 

O: 19JAN2021 04:44:31  45.4N   16.2E ML=3.7  EMSC   CROATIA                      

P: 18JAN2021 130381    45.0N   16.0E 3.0-5.2 AAAAA  Adriatic Sea               

 

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

 

SOUTHWEST PACIFIC

 

O: 18JAN2021 07:17:16  14.5S  167.3E Mw=5.3  EMSC   VANUATU                      

P: 17JAN2021 130491    15.0S  167.0E 4.0-5.7 AAAAA  Vanuatu Islands             

 

O: 18JAN2021 08:37:09  17.3S  178.6W mb=4.2  EMSC   FIJI REGION                  

P: 16JAN2021 130488    17.0S  178.0W 4.0-5.4 AAAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 18JAN2021 20:27:36  13.0N   57.7E mb=4.2  EMSC   OWEN FRACTURE ZONE REGION    

P: 17JAN2021 130266    15.0N   57.0E 3.5-5.3 ABAAA  Arabian Sea                

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 18JAN2021 17:40:18  33.7S  179.1W mb=5.3  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 20JAN2021 130515    31.0S  179.0W 4.0-5.6 CCAAA  So. Kermadec Islands       

 

O: 18JAN2021 22:34:06  37.8S  179.9E ML=4.1  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 14JAN2021 130511    36.0S  180.0E 3.5-4.9 BBAAA  E. of North Islands N.Z.   

 

JAPAN AND KURIL ISLANDS

 

O: 18JAN2021 20:47:32  39.0N  142.0E mb=4.7  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 17JAN2021 130367    38.0N  144.0E 4.0-5.7 AABAA  So. of Honshu              

 

NEIC reported this earthquake of M 4.7 in Northern Honshu, Japan was felt with intensity II-III in the area(s) of Northern Honshu, Japan in Hasama, Miyagi.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 18JAN2021 15:08:28  31.5N  115.6W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO      

P: 15JAN2021 130359    32.8N  115.4W 2.5-4.6 BBAAA  So. California             

 

O: 18JAN2021 14:47:31  32.8N  115.5W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 17JAN2021 130359    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

 

O: 18JAN2021 07:29:45  36.0N  117.5W ML=3.1  EMSC   CENTRAL CALIFORNIA           

O: 18JAN2021 13:53:49  36.0N  117.5W Ml=2.0  EMSC   CENTRAL CALIFORNIA

P: 20JAN2021 130364    35.9N  117.7W 2.5-4.4 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.3 in Central California was felt with intensity II-III in the area(s) of Central California at Trona, Inyokern.

 

O: 18JAN2021 09:01:37  37.4N  122.1W Md=2.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 16JAN2021 130326    37.3N  121.6W 2.5-4.9 AAAAA  Central California         

 

O: 18JAN2021 09:08:22  38.2N  117.7W ml=2.4  EMSC   NEVADA

O: 18JAN2021 13:30:51  38.2N  117.7W ML=2.4  EMSC   NEVADA

O: 18JAN2021 18:03:28  38.2N  117.7W ml=2.4  EMSC   NEVADA

O: 18JAN2021 23:20:07  38.2N  117.9W ml=2.1  EMSC   NEVADA

O: 18JAN2021 20:16:07  38.1N  118.1W ml=2.3  EMSC   NEVADA                       

P: 18JAN2021 130322    38.0N  118.0W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 19JAN2021 04:22:20  38.5N  122.7W Md=2.7  EMSC   NORTHERN CALIFORNIA          

P: 19JAN2021 130328    38.5N  122.7W 2.5-4.6 AAAAA  Central California         

 

ALASKA

 

O: 19JAN2021 02:24:15  54.6N  159.6W ml=3.9  EMSC   SOUTH OF ALASKA              

P: 17JAN2021 130430    54.9N  159.7W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O: 18JAN2021 21:43:20  58.3N  156.2W mb=4.0  EMSC   ALASKA PENINSULA             

P: 18JAN2021 130457    60.1N  153.4W 3.2-4.9 ABBAA  Central Alaska             

 

O: 18JAN2021 17:21:19  60.4N  152.4W ml=3.0  EMSC   SOUTHERN ALASKA              

P: 18JAN2021 130457    60.1N  153.4W 3.2-4.9 AAAAA  Central Alaska             

 

O: 19JAN2021 01:16:44  63.0N  149.3W ML=3.1  EMSC   CENTRAL ALASKA               

P: 16JAN2021 130459    62.7N  150.6W 3.2-4.9 BAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 18JAN2021 18:37:01  48.3N  122.5W Md=2.1  EMSC   PUGET SOUND REGION, WASHINGTON

P: 17JAN2021 130426    49.0N  123.0W 2.0-3.9 AAAAA  Washington state, U.S.     

 

O: 18JAN2021 02:29:55  48.4N  128.8W MB=3.5  ECAN Tofino, BC                      

O: 17JAN2021 15:58:10  48.5N  128.9W MB=3.2  ECAN Tofino, BC                     

P: 13JAN2021 130423    48.7N  129.0W 2.8-5.0 BAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

No earthquakes of M>=2 were located in the Rocky Mountain region today.

 

EASTERN U.S./CANADA

 

O: 18JAN2021 10:52:50  34.0N   80.4W Md=2.0  EMSC   SOUTH CAROLINA               

P: 14JAN2021 130368    33.0N   82.0W 2.0-4.2 BABAA  Southeast U.S.             

 

O: 18JAN2021 11:27:07  36.7N   89.5W mb=2.2  EMSC   SOUTHEASTERN MISSOURI        

P: 16JAN2021 130343    36.0N   89.0W 2.0-3.9 AAAAA  New Madrid area            

 

NEIC reported this earthquake of M 2.6 in Southeastern Missouri was felt with intensity II-III in the area(s) of Southeastern Missouri at Pevely, Osage Beach and in Ozark, Illnois.

 

O: 19JAN2021 03:23:18  36.7N   97.7W mb=2.5  EMSC   OKLAHOMA                     

P: 18JAN2021 130369    36.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 18JAN2021 08:44:33  37.0N   88.9W Md=2.0  EMSC   WESTERN KENTUCKY             

P: 12JAN2021 130343    37.0N   89.0W 2.0-3.9 CAAAA  New Madrid area            

 

O: 17JAN2021 18:37:41  44.6N   67.6W MB=3.1  ECAN St. Stephen, NB                

P:  9JAN2021 130065    44.4N   68.2W 2.0-3.8 CAAAA  Maine                       

 

O: 17JAN2021 14:51:17  47.5N   69.9W MB=0.9  ECAN Charlevoix Seismic Zone        

P: 18JAN2021 130394    47.0N   69.0W 2.0-3.9 AAAAA  Maine                      

 

O: 17JAN2021 10:30:34  47.6N   70.2W MB=1.1  ECAN Charlevoix Seismic Zone        

P: 17JAN2021 130403    47.3N   70.5W 2.0-3.9 AAAAA  New England                

 

O: 17JAN2021 08:53:07  46.3N   80.1W MB=3.1  ECAN Sturgeon Falls, ON             

P: 11JAN2021 130413    46.0N   81.0W 2.0-4.1 CAAAA  Ohio/Lake Erie              

 

HAWAII

 

O: 18JAN2021 20:55:33  19.2N  155.6W Ml=3.2  EMSC   ISLAND OF HAWAII, HAWAII     

P: 18JAN2021 130276    18.8N  155.2W 3.0-4.5 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 Naalehu, Pahala, Captain Cook and Kihei.

 

LIGHT SWARM AT MOUNT HOOD, OREGON MAY BE RELATED TO VOLCANIC EPISODE

 

EARTHQUAKE SUMMARY FOR JANUARY 17, 2021

 

A series of light to moderate earthquakes shook the area of Mount Hood, Oregon today. These were reported by NEIC to have been felt with maximum intensity V in Oregon at Hood River and I-III in Government Camp, Mount Hood Parkdale, The Dalles, Gresham, Portland, Oregon. The strongest of today's events in the Mount Hood area was M 2.8. These follow a strong swarm in the Mammoth Lakes area of California several days ago. A strong swarm in Mammoth Lakes in May, 1980 followed the eruption of Mt. St. Helens in Washington about a week later. Some relation between volcanic areas in Washington and Oregon and those in California is possible. The last earthquake of M>=2.8 in the Mount Hood area was an M 2.8 on October 10, 2017. The last of larger magnitude was an M 3.0 on May 14, 2010 and an M 3.3 on July 7, 2003. The strongest earthquake in the area in the past 30 years was an M 4.5 on June 29, 2002.

 

At the time of the June 29, 2002 event this summary noted:

 

"A strong swarm of earthquakes hit the Mt. Hood Oregon area this  morning. This swarm included several Ml>=3 events and a Ml 4.5 earthquake which was the largest earthquake ever recorded in the Mt. Hood region. The previous largest had occurred on Dec. 13, 1974 (Ml 4.1)." (June 30, 2002)

 

"... most significant swarm since 2002 when more than 200 quakes - including a widely felt event of M 4.5 struck the mountain on June 29-30, 2002. Nearly 1400 quakes have hit the mountain in the past 30 years - about half of which have been in these swarms of unknown origin. Of these 180 have been of M>=2.

 

The first swarm in recent years occurred in July, 1980 two months after the eruption of Mt. St. Helens, 100 km away. A connection between the two  swarms was considered at the time but a mechanism could not be determined for such a relation. Quakes increased from 1987 to 1994 and averaged about 15 a year. A second pulse of quakes started in 1998 and ended with the 2002 swarm.

 

The last eruption of Mt. Hood occurred 200 years ago. The 2002 swarm did not appear to have indicated new volcanic unrest." (June 30, 2002)

 

Forecast 130415 had expected today's event was likely at Mount Hood within

about 5 km of these epicenters around January 20. This activity is at the fifth node (72 degrees) from the M 6.7 in Mongolia of January 11, 2021 and may have been promoted by energy from that source.

 

O: 17JAN2021 23:03:54  45.3N  121.7W Ml=2.2  EMSC   MOUNT HOOD AREA, OREGON

O: 17JAN2021 23:24:45  45.3N  121.7W Md=2.2  EMSC   MOUNT HOOD AREA, OREGON

O: 17JAN2021 23:26:21  45.3N  121.7W ML=2.5  EMSC   MOUNT HOOD AREA, OREGON

O: 17JAN2021 23:38:31  45.3N  121.7W ML=2.8  EMSC   MOUNT HOOD AREA, OREGON

O: 18JAN2021 02:15:26  45.3N  121.7W Ml=2.2  EMSC   MOUNT HOOD AREA, OREGON

O: 17JAN2021 23:02:44  45.3N  121.7W Md=2.2  EMSC   MOUNT HOOD AREA, OREGON      

P: 20JAN2021 130415    45.3N  121.7W 2.0-4.4 BAAAA  Oregon state, U.S.         

 

A light earthquake of M 2.8 was felt in southeastern Maine today. NEIC reported it was felt with intensity II-III in Maine at Jonesboro, Columbia Falls, Jonesport, Harrington and Lebanon. This is the strongest earthquake within about 100 km of this epicenter since an M 3.5 on September 25, 2005. More recent quakes of this magnitude or larger slightly outside the 100 km distance as a series (M 2.8-3.2) to the west in late 2006 and an M 3.8 on January 10, 2019. An M 3.0 also occurred northeast of this epicenter on December 9, 2020. At the time this summary noted in this regard:

 

 

"An unusual earthquake of M 3.0 shook regions of south-central Maine today. NEIC reported it was felt with maximum intensity VI in Baileyville and II-III in Robbinston, Calais, Pembroke, Perry, Meddybemps, Baileyville and Whiting and in Saint Andrews, Saint Stephen, New Brunswick, Canada, This event followed a smaller M 2.4-2.7 two hours earlier which was also felt. The M 3.0 is the strongest within about 100 km of this epicenter since an M 3.8 to the east on January 10, 2019 and an M 3.3 on February 9, 2016." (December 10, 2020)

 

Forecast 130065 had expected enhanced seismicity within about 50 km of today's epicenter in mid-January.

 

O: 17JAN2021 18:37:41  44.7N   67.6W ML=2.8  EMSC   MAINE                        

P:  9JAN2021 130065    44.4N   68.2W 2.0-3.8 CAAAA  Maine                      

 

The strongest earthquake in the U.S. or Canada today was an M 3.5 in the Mina, Nevada area. This continues elevated seismicity in the region as discussed in the previous issue of this summary. It was not reported felt. Forecast 130322 had expected this activity around January 18, 2021.

 

O: 17JAN2021 18:12:15  38.2N  118.1W ml=2.0  EMSC   NEVADA

O: 18JAN2021 00:50:38  38.2N  117.7W ml=2.2  EMSC   NEVADA

O: 18JAN2021 05:00:53  38.2N  118.1W ml=3.5  EMSC   NEVADA

O: 17JAN2021 09:20:09  38.2N  118.1W ML=2.3  EMSC   NEVADA                       

P: 18JAN2021 130322    38.0N  118.0W 2.5-4.6 AAAAA  California/Nevada area     

 

The strongest earthquake in the world today was an M 5.4 in the South Sandwich Islands of the South Atlantic. This area has been active in January, 2021 with an M 5.6 on January 4; an M 5.2 on January 8 and an M 5.4 on January 11, 2021.

In the past year most of the strong activity in the South Sandwich Islands has been in the southern section with an M 6.4 in July and an M 6.1 in February, 2020. Earthquakes in this area, like today's are seldom felt. Forecast 130526 had expected today's event was likely within about 100 km in mid-January. This earthquake is located at 104 degrees from the last major earthquake in the world - the M 7.0 in the Dodecanese Islands of October 30,, 2020 and may have been promoted by energy from that source. Other earthquakes at this distance from Greece today occurred in Oaxaca, Mexico, Ecuador, Baja California, Sumbawa, Indonesia and El Salvador.

 

O: 17JAN2021 18:40:43  56.6S   27.3W Mw=5.4  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 14JAN2021 130526    56.0S   28.0W 4.0-5.7 BAAAA  So. Sandwich Islands       

P: 19JAN2021 130526    55.0S   28.0W 4.0-5.8 ABAAA  So. Sandwich Islands       

 

The South Sandwich Islands event was preceded by a near-antipodal M 5.1 in the region of Kamchatka, Russia. This was the only other event of M>=5 in the world today. It was not reported felt in this remote area. Forecast 130437 had expected this event within about 150 km was likely around January 18.

 

O: 17JAN2021 08:31:53  54.0N  161.9E Mw=5.1  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 18JAN2021 130437    53.0N  160.0E 4.0-5.5 AABAA  E. of Kamchatka            

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: 17JAN2021 16:30:45  20.0N   72.8E ML=3.5  EMSC   NEAR THE COAST OF GUJARAT, INDIA

P: 16JAN2021 130304    24.0N   70.0E 3.5-4.9 ACBAA  India                      

 

O: 17JAN2021 13:42:51  24.6N   97.1E mb=4.3  EMSC   MYANMAR-CHINA BORDER REGION  

P: 16JAN2021 130307    25.0N   97.0E 4.0-5.6 AAAAA  Myanmar                     

 

O: 17JAN2021 21:52:27  51.2N  100.4E mb=4.4  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 AABAA  So. Siberia                

 

O: 17JAN2021 17:21:55  53.9N  162.1E mb=4.1  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 17JAN2021 130440    56.0N  163.0E 4.0-5.7 ACAAA  Komandorsky Isl            

 

O: 17JAN2021 08:31:53  54.0N  161.9E Mw=5.1  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 18JAN2021 130437    53.0N  160.0E 4.0-5.5 AABAA  E. of Kamchatka            

 

INDONESIA AND PHILIPPINES

 

O: 17JAN2021 16:10:12   0.6N  124.5E ML=4.4  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 16JAN2021 130233     1.0N  124.0E 4.0-5.4 AAAAA  Mindanao, Philippines      

 

O: 17JAN2021 13:59:47   0.7N   96.8E ML=4.4  EMSC   NIAS REGION, INDONESIA       

P: 19JAN2021 130234     0.0N   97.0E 4.0-5.5 AAAAA  Nicobar Islands            

 

O: 17JAN2021 12:46:15   1.5N   95.3E ML=4.4  EMSC   OFF W COAST OF NORTHERN SUMATR

P: 19JAN2021 130234     0.0N   97.0E 4.0-5.5 ABBAA  Nicobar Islands             

 

O: 17JAN2021 09:49:36   9.3S  119.9E ML=4.0  EMSC   SUMBA REGION, INDONESIA      

P: 17JAN2021 130262     8.0S  119.0E 4.0-5.7 ABAAA  Sumbawa Island area        

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 18JAN2021 05:45     30.2S   71.6W mb=4.7  GUC    Coquimbo at Coquimbo, La Higue

P: 15JAN2021 130510    30.0S   72.0W 4.0-5.9 BAAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity IV in  Coquimbo at Coquimbo, La Higuera, La Serena, Monte Patria, Punitaqui, Rio Hurtado; III inAndacollo, Ovalle, Paiguano, Salamanca, Vicuna, and II in Illapel, Chile.

 

O: 17JAN2021 12:32     31.8S   71.4W mb=4.4  GUC    Coquimbo at Combarbala, Illape

P: 14JAN2021 130507    31.0S   71.0W 4.0-5.9 BAAAA  Central Chile              

 

GUC reported this earthquake was felt with intensity III in  Coquimbo at Combarbala, Illapel, Mone Patria, Ovalle, and II in Los Vilos, Chile.

 

O: 17JAN2021 12:24     35.0S   71.1W mb=4.8  GUC    Maule at Constitucion, Pelarco

P: 16JAN2021 130508    35.0S   72.0W 4.0-5.6 AAAAA  Central Chile              

 

GUC reported this earthquake was felt with intensity IV in  Maule at Constitucion, Pelarco, Romeral, Sn Clemente, Talca; III in Curico, Halane, II in San Rafael, Sagrada Familia, Pencahue, Iloca; with IV in O'Higgins at Chepica, Lolol, Santa Cruz and III in Chimbarongo, Placilla, Rancagua, Rengo, San Fernando; II in Santiago at Pedro Aguirre Cerda and Santiago, Chile.

 

O: 17JAN2021 13:26:57   1.1N   79.6W ML=4.1  EMSC   NEAR COAST OF ECUADOR        

P: 15JAN2021 130243     1.0S   81.0W 4.0-5.7 ACBAA  Ecuador                    

 

O: 18JAN2021 04:04:25  13.4N   89.3W mb=4.2  EMSC   OFFSHORE EL SALVADOR         

P: 20JAN2021 130274    14.0N   90.0W 3.5-5.2 AAAAA  Guatemala                  

 

NEIC reported this earthquake of M 4.2 in El Salvador was felt with intensity II-III in the area(s) of El Salvador at Nuevo Cuscatlan and Antiguo Cuscatlan, La Libertad.

 

O: 18JAN2021 04:33:55  14.2N   91.9W ML=4.2  EMSC   OFFSHORE GUATEMALA           

P: 17JAN2021 130269    14.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

P: 17JAN2021 130274    13.0N   91.0W 3.5-5.3 ABAAA  Guatemala                  

 

O: 17JAN2021 10:04:25  15.9N   96.8W ML=4.2  EMSC   OAXACA, MEXICO

O: 17JAN2021 09:16:45  16.6N   95.1W ML=4.0  EMSC   OAXACA, MEXICO

O: 17JAN2021 15:14:24  15.4N   96.5W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13JAN2021 130289    15.0N   96.0W 3.5-5.4 BAAAA  Oaxaca, Mexico             

 

O: 17JAN2021 17:28:21  17.9N  101.4W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 12JAN2021 130283    17.0N  101.0W 3.5-5.3 BAAAA  Michoacan, Mexico          

P: 17JAN2021 130283    18.0N  103.0W 3.5-5.1 AABAA  Michoacan, Mexico          

 

O: 17JAN2021 13:43:30  18.0N   66.8W ML=3.5  EMSC   PUERTO RICO                  

P: 16JAN2021 130292    19.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 17JAN2021 10:19:27  18.6N   68.5W ML=3.3  EMSC   DOMINICAN REPUBLIC

O: 17JAN2021 17:44:37  18.0N   68.0W ML=3.9  EMSC   PUERTO RICO REGION           

P: 16JAN2021 130292    18.0N   69.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 17JAN2021 12:09:15  18.9N   65.2W ML=3.3  EMSC   PUERTO RICO REGION

O: 17JAN2021 13:26:50  18.9N   65.3W Md=3.2  EMSC   PUERTO RICO REGION

O: 17JAN2021 13:34:43  18.9N   65.2W Md=3.2  EMSC   PUERTO RICO REGION

O: 17JAN2021 17:42:09  18.9N   65.3W Md=3.2  EMSC   PUERTO RICO REGION

O: 17JAN2021 12:06:36  19.0N   65.2W Md=3.1  EMSC   PUERTO RICO REGION

O: 17JAN2021 13:12:43  19.0N   65.2W Md=3.4  EMSC   PUERTO RICO REGION

O: 17JAN2021 20:13:37  19.2N   65.3W Md=3.4  EMSC   PUERTO RICO REGION           

P: 19JAN2021 130297    20.0N   66.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O: 17JAN2021 07:54:25  20.3N   71.0W ML=3.4  EMSC   DOMINICAN REPUBLIC REGION

O: 17JAN2021 09:52:32  20.3N   70.9W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION

O: 17JAN2021 10:11:14  20.3N   70.9W ML=3.5  EMSC   DOMINICAN REPUBLIC REGION

O: 17JAN2021 07:41:52  20.3N   70.8W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P: 19JAN2021 130298    20.0N   71.0W 3.0-4.7 AAAAA  Bahamas/No. Caribbean      

 

O: 17JAN2021 12:24:06  24.2S   66.9W mb=4.6  EMSC   SALTA, ARGENTINA             

P: 20JAN2021 130494    24.0S   67.0W 4.0-5.8 BAAAA  Argentina                  

 

O: 17JAN2021 08:05:23  28.0S   66.9W mb=4.6  EMSC   CATAMARCA, ARGENTINA         

P: 12JAN2021 130494    28.0S   68.0W 4.0-5.6 BAAAA  Argentina                  

 

O: 18JAN2021 05:45:55  30.1S   71.8W mb=4.9  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 15JAN2021 130510    30.0S   72.0W 4.0-5.9 BAAAA  Coast Central Chile        

 

O: 17JAN2021 12:32:12  31.8S   71.5W mb=4.6  EMSC   COQUIMBO, CHILE              

P: 14JAN2021 130507    31.0S   71.0W 4.0-5.9 BAAAA  Central Chile              

 

NEIC reported this earthquake of M 4.6 in Valparaiso, Chile was felt with intensity II-III in the area(s) of Valparaiso, Chile at Calera and in Ovalle, Coquimbo, Chile.

 

O: 18JAN2021 01:48:32  32.5S   69.8W mb=4.5  EMSC   MENDOZA, ARGENTINA           

P: 14JAN2021 130508    33.0S   73.0W 4.0-5.9 BACAA  Central Chile              

 

NEIC reported this earthquake of M 4.5 in Mendoza, Argentina was felt with intensity II-III in the area(s) of  Santiago, Chile.

 

O: 17JAN2021 12:24:32  35.0S   71.0W Mw=4.7  EMSC   MAULE, CHILE                 

P: 16JAN2021 130508    35.0S   72.0W 4.0-5.6 AAAAA  Central Chile              

 

NEIC reported this earthquake of M 4.7 in Maule, Chile was felt with intensity II-III in the area(s) of Maule, Chile at Curico and in Calera Valparaiso, Santiago and Talagante.

 

O: 17JAN2021 10:21:39  50.0S   71.8W ML=3.5  EMSC   SANTA CRUZ, ARGENTINA        

 

Note that this earthquake is nearly antipodal to the M 6.7 in Mongolia of January 11 and may have been promoted by focused energy from that source.

 

AFRICA AND EUROPE

 

O: 17JAN2021 11:22:42  34.8N   24.6E mb=4.2  EMSC   CRETE, GREECE                

P: 13JAN2021 130335    34.0N   24.0E 3.0-4.5 BAAAA  Crete                      

 

O: 18JAN2021 04:23:14  35.6N   26.3E mb=4.6  EMSC   CRETE, GREECE                

P: 18JAN2021 130316    38.0N   26.0E 3.0-4.6 ACAAA  Aegean Sea                 

 

O: 17JAN2021 09:24:06  38.5N   39.2E mb=4.1  EMSC   EASTERN TURKEY               

P: 16JAN2021 130375    39.0N   40.0E 3.5-4.9 AAAAA  Turkey                     

 

O: 17JAN2021 20:36:40  45.4N   16.2E ML=3.4  EMSC   CROATIA                      

P: 18JAN2021 130381    45.0N   16.0E 3.0-5.2 AAAAA  Adriatic Sea               

 

SOUTHWEST PACIFIC

 

O: 17JAN2021 13:05:21  18.0S  178.5W mb=4.5  EMSC   FIJI REGION                  

P: 16JAN2021 130488    17.0S  178.0W 4.0-5.4 AAAAA  Tonga Islands              

 

O: 17JAN2021 16:18:18  21.0S  170.6E mb=4.5  EMSC   VANUATU                      

P: 19JAN2021 130497    21.0S  169.0E 4.0-5.4 AAAAA  Loyalty Islands            

 

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

 

OCEAN RIDGES

 

O: 17JAN2021 18:40:43  56.6S   27.3W Mw=5.4  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 14JAN2021 130526    56.0S   28.0W 4.0-5.7 BAAAA  So. Sandwich Islands       

P: 19JAN2021 130526    55.0S   28.0W 4.0-5.8 ABAAA  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: 18JAN2021 02:05:54  45.0N  147.9E mb=4.8  EMSC   KURIL ISLANDS                

P: 15JAN2021 130389    44.0N  149.0E 3.5-5.4 BAAAA  Hokkaido, Japan            

 

O: 18JAN2021 01:17:18  48.9N  153.7E mb=4.5  EMSC   KURIL ISLANDS                

P: 12JAN2021 130421    48.0N  154.0E 3.5-5.5 CAAAA  So. Kurils                 

P: 19JAN2021 130401    48.0N  156.0E 3.5-5.4 AABAA  NE Pacific                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 17JAN2021 11:30:04  32.0N  116.2W ML=2.6  EMSC   BAJA CALIFORNIA, MEXICO      

P: 14JAN2021 130358    31.7N  116.3W 2.5-4.6 BAAAA  So. California             

 

O: 17JAN2021 20:41:11  32.8N  115.5W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 17JAN2021 22:08:09  32.6N  115.6W ML=2.2  EMSC   BAJA CALIFORNIA, MEXICO      

P: 15JAN2021 130359    32.8N  115.4W 2.5-4.6 AAAAA  So. California             

 

O: 17JAN2021 10:58:01  35.7N  117.5W Ml=2.1  EMSC   SOUTHERN CALIFORNIA           

P: 20JAN2021 130364    35.9N  117.7W 2.5-4.4 BAAAA  So. California             

 

O: 17JAN2021 13:33:14  36.0N  120.9W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 18JAN2021 130324    36.2N  120.8W 2.5-4.9 AAAAA  Central California         

 

O: 17JAN2021 18:12:15  38.2N  118.1W ml=2.0  EMSC   NEVADA

O: 18JAN2021 00:50:38  38.2N  117.7W ml=2.2  EMSC   NEVADA

O: 18JAN2021 05:00:53  38.2N  118.1W ml=3.5  EMSC   NEVADA

O: 17JAN2021 09:20:09  38.2N  118.1W ML=2.3  EMSC   NEVADA                       

P: 18JAN2021 130322    38.0N  118.0W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 18JAN2021 00:09:24  39.0N  123.1W Md=2.4  EMSC   NORTHERN CALIFORNIA          

O: 18JAN2021 01:12:47  39.1N  123.0W ML=2.6  EMSC   NORTHERN CALIFORNIA          

P: 13JAN2021 130329    39.2N  123.1W 2.5-4.6 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.9 in Northern California was felt with intensity II-III in the area(s) of Northern California at Hopland, Lakeport, Ukiah, and Kelseyville.

 

ALASKA

 

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

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 17JAN2021 23:03:54  45.3N  121.7W Ml=2.2  EMSC   MOUNT HOOD AREA, OREGON

O: 17JAN2021 23:24:45  45.3N  121.7W Md=2.2  EMSC   MOUNT HOOD AREA, OREGON

O: 17JAN2021 23:26:21  45.3N  121.7W ML=2.5  EMSC   MOUNT HOOD AREA, OREGON

O: 17JAN2021 23:38:31  45.3N  121.7W ML=2.8  EMSC   MOUNT HOOD AREA, OREGON

O: 18JAN2021 02:15:26  45.3N  121.7W Ml=2.2  EMSC   MOUNT HOOD AREA, OREGON

O: 17JAN2021 23:02:44  45.3N  121.7W Md=2.2  EMSC   MOUNT HOOD AREA, OREGON      

P: 20JAN2021 130415    45.3N  121.7W 2.0-4.4 BAAAA  Oregon state, U.S.         

 

O: 18JAN2021 02:58:32  47.7N  122.0W Ml=2.2  EMSC   PUGET SOUND REGION, WASHINGTON

P: 19JAN2021 130424    47.5N  121.8W 2.0-4.2 AAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 17JAN2021 19:03:35  31.7N  104.2W ML=3.0  EMSC   WESTERN TEXAS

O: 17JAN2021 17:14:10  31.7N  104.4W ML=2.6  EMSC   WESTERN TEXAS                

P: 12JAN2021 130355    32.5N  104.6W 2.0-4.1 BAAAA  SW U.S.A                   

 

O: 17JAN2021 19:43:12  32.1N  102.1W mb=2.3  EMSC   WESTERN TEXAS                

P: 12JAN2021 130355    32.6N  101.6W 2.0-4.0 BAAAA  SW U.S.A                   

 

O: 17JAN2021 14:07:01  44.3N  115.2W ML=2.8  EMSC   SOUTHERN IDAHO               

P: 17JAN2021 130397    44.5N  115.2W 2.0-4.0 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 18JAN2021 04:05:35  36.6N   99.0W ML=2.5  EMSC   OKLAHOMA                     

P: 18JAN2021 130369    36.0N   97.0W 2.0-4.1 AABAA  Southern Plains            

 

O: 17JAN2021 18:37:41  44.7N   67.6W ML=2.8  EMSC   MAINE                        

P:  9JAN2021 130065    44.4N   68.2W 2.0-3.8 CAAAA  Maine                      

 

HAWAII

 

O: 17JAN2021 09:58:55  19.9N  155.5W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P: 19JAN2021 130303    20.4N  155.1W 4.0-5.5 AAAAA  Hawaii area                

 

CENTRAL AND NORTHERN CALIFORNIA ACTIVE

 

EARTHQUAKE SUMMARY FOR JANUARY 16, 2021

 

The strongest earthquakes in the U.S. or Canada today were an M 4.2-4.4 off the coast of Central California and an M 4.4 off Northern California. These were accompanied by a series inland Central California including an M 4.0.  These follow two events in central California of M>=3.6 in the past two days. These included the M 3.9 in the region of Mammoth Lakes yesterday and an M 3.6 north of  San Francisco the day before. This suggests the area is somewhat unstable at this time, but may also indicate a longer term instability promoted by tidal stresses associated with the new moon of January 13, 2021. Strong to major earthquakes in the region generally occur in association with major solar or geomagnetic events. Earthquakes in this region off Central California have occasionally been followed by stronger earthquakes further to the east in the region of the San Andreas Fault zone. This activity is near 103 degrees from the M 7.0 in the Dodecanese Islands of M 7.0 of October 30, 2020, the last major earthquake in the world and was probably promoted by energy from that source.

 

NEIC reported the earthquake near Monterey Bay, Central California was felt with maximum intensity IV in California at Aromas, San Juan Bautista, Salinas, Watsonville, Castroville, Moss Landing, Gilroy. Aftershocks were also felt in the area. The last earthquakes of M>=4.4 within about 100 km of today's epicenter occurred on October 15, 2019 with M 4.5 north of San Francisco and an M 4.7 fourteen hours later near today's epicenter. The earthquake north of San Francisco this year occurred near the same location as in 2019 on January 14, 2021 at 19:18. Today's earthquake of M 4.4 was expected in this region by forecast 130326 within this area.

 

 

O: 17JAN2021 04:04:36  36.9N  121.6W Md=2.1  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 04:06:03  36.9N  121.6W ML=2.8  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 04:14:10  36.9N  121.6W Md=2.0  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 04:01:26  36.7N  122.0W ML=4.4  EMSC   MONTEREY BAY, CALIFORNIA     

P: 15JAN2021 130326    36.8N  121.3W 2.5-5.0 AAAAA  Central California         

P: 16JAN2021 130326    37.3N  121.6W 2.5-4.9 AAAAA  Central California         

 

An earthquake of M 4.4 also occurred off the coast of northern California today. It was reported by NEIC to have been felt lightly in Ferndale, McKinleyville, Crescent City and Willits. The last earthquake of M>=4.4 within about 75 km of this epicenter off northern California occurred on March 9, 2020 with M 5.8 and an aftershock of M 4.9 3.5 hours later. An M 4.4 also hit the region on March 24, 2019. Forecast 130409 had expected today's event was likely within about 30 km of this epicenter around January 16. This event occurred near local solar midnight and may have been promoted by tidal stresses.

 

O: 17JAN2021 06:25:11  40.3N  125.6W Mw=4.4  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 16JAN2021 130409    40.5N  125.8W 2.5-4.8 AAAAA  Off Coast of No. Calif     

 

A series of light earthquakes in the East Tulare County area of Central California also occurred earlier in the day. This event is to the east near the Nevada border. NEIC reported it was felt with intensity II-III in East Tulare County, Lone Pine, Springville, Inyokern, Kernville, Onyx, Three Rivers, Lake Isabella, Porterville, and Wofford Heights. Associated shocks of M 3.2 and 3.8 followed and were lightly felt in the area. An M 5.5 hit east of this on June 4, 2020 and was followed by an M 4.2 about an hour later within about 25 km of today's epicenter. A second M 4.2 hit this area to the north by about 30 km on September 11, 2020, the last such event in this region. Forecast 130319 had expected today's event within about 30 km was likely around January 14.

 

 

O: 17JAN2021 02:53:12  36.2N  118.1W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 02:57:51  36.2N  118.1W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 03:14:49  36.2N  118.1W Mw=3.8  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 03:30:32  36.2N  118.1W ML=3.0  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 03:31:46  36.2N  118.1W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 02:49:08  36.2N  118.1W Mw=4.0  EMSC   CENTRAL CALIFORNIA           

P: 14JAN2021 130319    36.3N  117.8W 2.5-4.7 BAAAA  California/Nevada area     

 

The strongest earthquake in the world today occurred in Hindu Kush, Afghanistan with M 5.5. NEIC reported it was felt with intensity V in Afghanistan at Faizabad and IV in Handud, Kabul, Mardan, Pakistan, Dushanbe and Navabadski,  Tajikistan,  and with lesser intenstiy in Peshawar and Mingaora, Pakistan, Nurak, Tajikistan and Mahmoud Raqui, Afghanistan. This is the strongest earthquake in Afghanistan since an M 5.6 on June 16, 2020 and prior to that

an M 6.1 on December 20, 2019. Forecast 130336 had expected today's earthquake within about 50 km was likely around January 20, 2021.

 

O: 16JAN2021 20:02:44  36.5N   70.8E mb=5.5  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 20JAN2021 130336    37.0N   71.0E 3.8-5.3 BAAAA  Hindu Kush/Pakistan        

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: 17JAN2021 02:50:20  26.8N   55.3E mb=4.7  EMSC   SOUTHERN IRAN                

P: 17JAN2021 130312    28.0N   55.0E 3.5-4.9 ABAAA  So. Iran/Persian Gulf      

 

O: 16JAN2021 23:10:58  22.5N  121.5E Mw=5.1  EMSC   TAIWAN REGION                

O: 16JAN2021 23:10:59  22.5N  121.4E ML=5.4  TAI    Hualien, Taiwan               

P: 15JAN2021 130313    22.0N  122.0E 4.0-5.4 AAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity IV in Taitung, and II in Pingtung, Kaohsiung, Tainan, Chiayi, Hualien, Yunlin, Nantou, Changhua and Miaoli Counties, Taiwan.

NEIC reported this earthquake of M 5.1 in Taiwan was felt with intensity II-III in the area(s) of Taiwan at Taitung, Tainan, Kaohsiung, and Taipei.

 

O: 17JAN2021 04:44:49  24.3N   99.4E mb=4.4  EMSC   YUNNAN, CHINA                

P: 16JAN2021 130307    25.0N   97.0E 4.0-5.6 AABAA  Myanmar                    

 

O: 16JAN2021 16:31:04  33.0N   75.9E ML=4.1  EMSC   EASTERN KASHMIR              

P: 16JAN2021 130353    34.0N   74.0E 3.8-5.2 AABAA  Pakistan                   

 

O: 17JAN2021 02:38:08  37.8N   47.8E ML=4.3  EMSC   NORTHWESTERN IRAN            

P: 19JAN2021 130347    36.0N   49.0E 3.8-5.2 ABAAA  No. Iran                   

 

O: 16JAN2021 20:02:44  36.5N   70.8E mb=5.5  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 20JAN2021 130336    37.0N   71.0E 3.8-5.3 BAAAA  Hindu Kush/Pakistan        

 

O: 16JAN2021 20:48:11  23.7N   93.6E mb=4.3  EMSC   MYANMAR-INDIA BORDER REGION  

P: 16JAN2021 130307    25.0N   97.0E 4.0-5.6 ABCAA  Myanmar                    

 

O: 17JAN2021 00:56:32  51.2N  100.3E mb=4.3  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 AABAA  So. Siberia                

 

 

INDONESIA AND PHILIPPINES

 

O: 17JAN2021 03:34:25   0.1S  124.9E ML=4.2  EMSC   MOLUCCA SEA                  

P: 16JAN2021 130233     1.0N  124.0E 4.0-5.4 ABAAA  Mindanao, Philippines      

 

O: 16JAN2021 12:05:08   0.7N  129.3E ML=4.0  EMSC   HALMAHERA, INDONESIA         

P: 20JAN2021 130232     1.0N  128.0E 4.0-5.4 BABAA  Halmahera                  

 

O: 16JAN2021 09:26:43   6.3S  104.0E Mw=5.3  EMSC   SUNDA STRAIT, INDONESIA      

P: 20JAN2021 130258     6.0S  104.0E 4.0-5.5 BAAAA  So. of Sumatera            

 

O: 16JAN2021 12:25:42  18.6N  145.3E mb=4.6  EMSC   PAGAN REG., N. MARIANA ISLANDS

P: 14JAN2021 130287    19.0N  146.0E 4.0-5.5 AAAAA  No. Marianas               

 

CENTRAL AND SOUTH AMERICA

 

O: 16JAN2021 14:42:58   1.1N   79.6W ML=4.1  EMSC   NEAR COAST OF ECUADOR

O: 16JAN2021 10:55:43   1.2N   79.7W ML=4.5  EMSC   NEAR COAST OF ECUADOR

O: 16JAN2021 10:43:42   1.0N   79.6W mb=4.5  EMSC   NEAR COAST OF ECUADOR        

P: 15JAN2021 130243     1.0S   81.0W 4.0-5.7 ABBAA  Ecuador                    

 

O: 17JAN2021 06:01:29  12.4N   86.8W mb=4.4  EMSC   NICARAGUA                    

P: 15JAN2021 130285    11.0N   86.0W 3.5-5.5 ABAAA  Nicaragua                  

 

O: 16JAN2021 07:30:55  14.0N   92.6W ML=4.0  EMSC   OFFSHORE GUATEMALA           

P: 17JAN2021 130269    14.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 17JAN2021 01:05:09  14.8S   76.2W mb=4.2  EMSC   NEAR COAST OF CENTRAL PERU   

P: 12JAN2021 130475    13.0S   77.0W 4.0-5.7 BBAAA  Central Peru               

 

O: 17JAN2021 05:30:01  15.4N   96.4W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13JAN2021 130289    15.0N   96.0W 3.5-5.4 BAAAA  Oaxaca, Mexico             

 

O: 16JAN2021 07:33:34  15.6N   93.8W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 17JAN2021 130269    14.0N   93.0W 3.5-5.3 ABAAA  Chiapas, Mexico            

 

O: 16JAN2021 17:06:52  15.7N   95.1W mb=4.6  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13JAN2021 130289    15.0N   96.0W 3.5-5.4 BAAAA  Oaxaca, Mexico             

 

O: 16JAN2021 20:16:37  16.4N   98.4W ML=4.4  EMSC   GUERRERO, MEXICO             

P: 18JAN2021 130290    16.0N  100.0W 3.5-5.4 AABAA  Oaxaca, Mexico              

 

O: 16JAN2021 20:59:23  17.2N   95.3W ML=4.0  EMSC   OAXACA, MEXICO               

P: 15JAN2021 130270    17.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 16JAN2021 18:46:42  18.2N   70.2W ML=3.4  EMSC   DOMINICAN REPUBLIC REGION     

P: 16JAN2021 130293    19.0N   71.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 16JAN2021 16:07:57  19.3N   64.9W Md=3.4  EMSC   VIRGIN ISLANDS REGION        

P: 15JAN2021 130278    19.0N   64.0W 3.0-5.2 AAAAA  Leeward Islands            

 

O: 16JAN2021 13:17:04  20.0N   70.5W ML=3.4  EMSC   DOMINICAN REPUBLIC REGION

O: 16JAN2021 07:05:23  20.2N   70.7W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION

O: 16JAN2021 18:41:48  18.3N   70.8W ML=4.0  EMSC   DOMINICAN REPUBLIC REGION

O: 16JAN2021 23:40:05  18.7N   70.3W ML=3.0  EMSC   DOMINICAN REPUBLIC

O: 16JAN2021 19:29:37  18.8N   70.7W ML=3.2  EMSC   DOMINICAN REPUBLIC

O: 16JAN2021 16:12:55  19.0N   69.2W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION

O: 16JAN2021 18:19:57  19.7N   71.1W ML=3.1  EMSC   DOMINICAN REPUBLIC           

O: 16JAN2021 22:18:01  20.3N   71.0W ML=3.4  EMSC   DOMINICAN REPUBLIC REGION    

P: 14JAN2021 130298    20.0N   72.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

P: 16JAN2021 130293    19.0N   71.0W 3.4-5.1 AAAAA  Puerto Rico                 

 

O: 17JAN2021 05:17:55  24.1N  110.4W ML=4.0  EMSC   BAJA CALIFORNIA SUR, MEXICO  

P: 16JAN2021 130301    24.0N  109.0W 3.5-4.9 AABAA  Gulf of California         

 

O: 16JAN2021 15:12:27  45.7S   77.4W mb=4.2  EMSC   OFF COAST OF AISEN, CHILE     

P: 20JAN2021 130516    43.0S   83.0W 4.0-5.6 BBCAA  Chile Rise                 

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O: 17JAN2021 03:38:55  15.4S  168.2E mb=5.2  EMSC   VANUATU                      

P: 17JAN2021 130491    15.0S  167.0E 4.0-5.7 AAAAA  Vanuatu Islands            

 

OCEAN RIDGES

 

O: 16JAN2021 23:28:35  57.6S   26.1W mb=4.8  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 11JAN2021 130527    58.0S   25.0W 4.0-5.9 BAAAA  So. Sandwich Islands       

P: 14JAN2021 130526    56.0S   28.0W 4.0-5.7 ABBAA  So. Sandwich Islands       

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 16JAN2021 09:42:15  30.6S  177.0W mb=5.1  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P: 15JAN2021 130515    31.0S  178.0W 4.0-5.6 AAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 17JAN2021 01:11:51  36.7N  142.3E mb=4.5  EMSC   OFF EAST COAST OF HONSHU, JAPA

P: 15JAN2021 130351    38.0N  142.0E 4.0-5.4 ABAAA  Off East Coast Honshu      

 

O: 16JAN2021 09:43:14  37.6N  139.7E mb=4.3  EMSC   EASTERN HONSHU, JAPAN        

P: 17JAN2021 130367    38.0N  144.0E 4.0-5.7 AACAA  So. of Honshu              

 

O: 16JAN2021 08:08:36  39.6N  142.8E mb=4.6  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 17JAN2021 130387    40.0N  144.0E 3.5-5.7 AAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 16JAN2021 22:29:01  33.8N  116.1W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 16JAN2021 130360    33.7N  116.1W 2.5-4.6 AAAAA  So. California             

 

O: 17JAN2021 02:49:08  36.2N  118.1W Mw=4.0  EMSC   CENTRAL CALIFORNIA           

P: 14JAN2021 130319    36.3N  117.8W 2.5-4.7 BAAAA  California/Nevada area     

 

O: 16JAN2021 23:28:04  39.5N  117.8W ML=2.6  EMSC   NEVADA                       

P: 18JAN2021 130322    38.0N  118.0W 2.5-4.6 ABAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.9 in Nevada was felt with intensity II-III in the area(s) of Nevada at Reno.

 

O: 16JAN2021 21:21:13  40.7N  123.4W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 14JAN2021 130408    40.0N  123.0W 2.5-4.4 AAAAA  Northern California        

 

O: 16JAN2021 20:00:11  32.5N  115.6W Ml=2.4  EMSC   BAJA CALIFORNIA, MEXICO

O: 17JAN2021 05:09:17  32.5N  115.3W Ml=2.1  EMSC   BAJA CALIFORNIA, MEXICO

O: 16JAN2021 20:16:30  32.6N  115.7W Ml=2.3  EMSC   BAJA CALIFORNIA, MEXICO

O: 16JAN2021 20:16:30  32.6N  115.7W Ml=2.3  EMSC   BAJA CALIFORNIA, MEXICO

O: 17JAN2021 00:46:44  32.8N  115.5W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 16JAN2021 17:05:19  32.5N  115.3W Ml=2.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 15JAN2021 130359    32.8N  115.4W 2.5-4.6 AAAAA  So. California             

 

O: 17JAN2021 01:59:14  40.6N  121.7W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 17JAN2021 01:51:43  40.6N  121.7W Md=2.9  EMSC   NORTHERN CALIFORNIA          

P: 16JAN2021 130407    40.2N  121.2W 2.5-4.6 AAAAA  Northern California        

 

O: 16JAN2021 07:28:16  37.9N  118.6W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 07:29:42  37.9N  118.6W ml=2.4  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 09:56:13  37.9N  118.6W ml=2.2  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 10:38:26  37.9N  118.6W ml=2.4  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 19:17:22  37.9N  118.6W ml=2.0  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 10:32:38  38.2N  118.1W ml=2.5  EMSC   NEVADA

O: 16JAN2021 18:53:55  38.2N  117.9W ml=2.0  EMSC   NEVADA

P: 15JAN2021 130320    37.4N  118.6W 2.5-4.5 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.2 in Mammoth Lakes, California was felt with intensity II-III in the area(s) of Mammoth Lakes, and Benton California.

 

O: 17JAN2021 04:04:36  36.9N  121.6W Md=2.1  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 04:06:03  36.9N  121.6W ML=2.8  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 04:14:10  36.9N  121.6W Md=2.0  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 04:01:26  36.7N  122.0W ML=4.4  EMSC   MONTEREY BAY, CALIFORNIA     

P: 15JAN2021 130326    36.8N  121.3W 2.5-5.0 AAAAA  Central California         

P: 16JAN2021 130326    37.3N  121.6W 2.5-4.9 AAAAA  Central California         

 

O: 17JAN2021 02:53:12  36.2N  118.1W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 02:57:51  36.2N  118.1W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 03:14:49  36.2N  118.1W Mw=3.8  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 03:30:32  36.2N  118.1W ML=3.0  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 03:31:46  36.2N  118.1W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 17JAN2021 02:49:08  36.2N  118.1W Mw=4.0  EMSC   CENTRAL CALIFORNIA           

P: 14JAN2021 130319    36.3N  117.8W 2.5-4.7 BAAAA  California/Nevada area     

 

O: 17JAN2021 06:25:11  40.3N  125.6W Mw=4.4  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 16JAN2021 130409    40.5N  125.8W 2.5-4.8 AAAAA  Off Coast of No. Calif     

 

ALASKA

 

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

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 16JAN2021 10:38:40  47.5N  122.0W Md=2.1  EMSC   PUGET SOUND REGION, WASHINGTON

P: 19JAN2021 130424    47.5N  121.8W 2.0-4.2 BAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 17JAN2021 04:19:41  44.3N  114.8W ML=2.9  EMSC   SOUTHERN IDAHO

O: 16JAN2021 09:46:50  44.3N  115.2W Ml=2.4  EMSC   SOUTHERN IDAHO               

P: 17JAN2021 130397    44.5N  115.2W 2.0-4.0 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 16JAN2021 19:44:10  36.1N   98.0W ML=2.4  EMSC   OKLAHOMA

O: 16JAN2021 13:47:55  36.0N   97.3W ML=2.0  EMSC   OKLAHOMA                     

O: 16JAN2021 19:07:52  36.5N   99.4W ML=2.2  EMSC   OKLAHOMA                      

P: 18JAN2021 130369    36.0N   97.0W 2.0-4.1 AABAA  Southern Plains            

 

HAWAII

 

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

 

STRONG EARTHQUAKE OFF SOUTHERN GUATEMALA

 

EARTHQUAKE SUMMARY FOR JANUARY 15, 2021

 

The strongest earthquake in the world today was an M 5.9 off the coast of Guatemala. NEIC reported it was felt with maximum intensity VII in Champerico, Retalhuleu, Guatemala d IV in Quetzaltenango with lesser shaking in Chimaltenango, Sacatepequez, Itzapa, and Escuintla. The mainshock was followed by several aftershocks including an M 4.9 felt with intensity III in Santa Catarina Pinula, Guatemala. This may have been promoted by high tidal stresses associated with the new moon as noted in previous issues of this summary:

 

"The new moon will arrive at 05:00 UT on January 13. Longitudes which are at sub-lunar conditions (local solar midnight) at this time are near 75 West and those at sub-solar conditions (local solar noon) are near 105 East. These include in the west, the west coast of South America and eastern North America and in the east western and central Indonesia, the Philippines and Taiwan among others. These areas are most likely to see tidally enhanced seismicity in the next week through January 17, 2021. Tidal enhancement is most likely near local solar noon and midnight. A strong global earthquake is likely in this period." (January 8-12, 2021)

 

This is the largest earthquake in the region of Guatemala in the past year - an

M 5.8 occurred near this epicenter on August 4, 2020. The last earthquake in the area of M>5.9 was an M 6.6 on February 1, 2019 and prior to that an M 6.1 on October 28, 2018. Forecast 130274 had expected today's activity in Guatemala was likely around January 17. This earthquake activity is located at 103 degrees from the M 7.0 in the Dodecanese Islands, Greece of October 30, 2020 - the last major earthquake in the world. It was likely promoted by concentrated energy from that source. A series of moderate earthquakes at this distance from Greece also occurred today in Ecuador today, and were probably also promoted by tidal stresses and by energy from the Dodecanese Islands.

 

O: 15JAN2021 23:41:07  13.3N   91.8W mb=4.1  EMSC   OFFSHORE GUATEMALA

O: 16JAN2021 04:27:06  13.7N   92.4W ML=4.1  EMSC   OFFSHORE GUATEMALA

O: 15JAN2021 18:47:05  13.8N   92.1W ML=4.0  EMSC   OFFSHORE GUATEMALA

O: 15JAN2021 16:10:50  14.0N   92.1W Mw=5.9  EMSC   OFFSHORE GUATEMALA

O: 15JAN2021 18:00:02  14.1N   92.8W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 15JAN2021 21:32:59  14.1N   91.9W mb=4.9  EMSC   OFFSHORE GUATEMALA           

P: 17JAN2021 130274    13.0N   91.0W 3.5-5.3 AAAAA  Guatemala                  

 

Forecast 130243 had expected this activity in Ecuador was likely around January 15.

 

O: 15JAN2021 10:35:17   1.1N   79.7W mb=4.7  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 18:45:49   1.1N   79.7W ML=4.2  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 19:37:03   1.1N   79.6W ML=4.3  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 23:35:26   1.1N   79.8W ML=4.3  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 21:54:46   1.2N   79.7W ML=4.4  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 21:56:50   1.2N   79.8W ML=4.0  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 19:21:16   1.0N   79.8W mb=4.8  EMSC   NEAR COAST OF ECUADOR        

O: 15JAN2021 23:44:50   2.6S   82.1W ML=4.0  EMSC   OFF COAST OF ECUADOR         

P: 15JAN2021 130243     1.0S   81.0W 4.0-5.7 ABAAA  Ecuador                    

 

A moderate earthquake of M 5.5 was also widely felt in southern Iran today. NEIC reported it was felt with maximum intensity V in Bandar-e Langeh, HJormozgan, Iran and IV and III in the United Arab Emirates and at Dona, Qatar. This is the strongest earthquake in Southern Iran within about 250 km of this epicenter since an M 5.8 and 5.5 on June 9, 2020. Forecasts 129973 and 130312 had expected today's event within about 100 km was likely in mid-January.

 

O: 15JAN2021 21:31:05  26.9N   55.3E Mw=5.4  EMSC   SOUTHERN IRAN                

P:  9JAN2021 129973    27.0N   56.0E 3.5-5.1 CAAAA  So. Iran/Persian Gulf      

P: 17JAN2021 130312    28.0N   55.0E 3.5-4.9 ABAAA  So. Iran/Persian Gulf      

 

A series of light earthquakes occurred in the Mammoth Lakes, California area today. The largest of these included an M 3.9 and were felt with intensity II-III in Bishop, June Lake, Benton, California. While a series of events have occurred about 50 km north of today's epicenter in Nevada starting with an M 5.2 on April 11, 2020, this is the strongest event in the Mammoth Lakes area since an M 4.1 on April 5, 2020. Forecast 130320 had expected today's event in this area was likely around January 15. Like activity in Guatemala and Ecuador, this is located near 100 degrees from the Dodecanese Islands and was probably promoted from that source.

 

O: 16JAN2021 00:53:25  37.6N  118.9W Md=2.3  EMSC   LONG VALLEY AREA, CALIFORNIA

O: 16JAN2021 05:08:20  37.6N  118.9W Md=2.0  EMSC   LONG VALLEY AREA, CALIFORNIA

O: 15JAN2021 08:37:26  37.9N  118.6W ml=2.0  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 17:52:08  37.9N  118.6W ml=2.3  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 20:02:03  37.9N  118.6W ml=3.3  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 20:38:11  37.9N  118.6W ML=2.8  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 20:47:01  37.9N  118.6W ML=2.1  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 21:13:21  37.9N  118.6W ml=2.1  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 22:11:07  37.9N  118.5W Mw=3.9  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 22:18:23  37.9N  118.6W ml=2.3  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 22:50:15  37.9N  118.5W ML=2.8  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 06:32:14  37.9N  118.6W MD=2.9  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 06:41:25  37.9N  118.6W Md=2.1  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 06:52:20  37.9N  118.7W ml=2.9  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 06:55:27  37.9N  118.5W MD=2.5  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 06:56:33  37.9N  118.6W ml=3.0  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 01:03:41  38.0N  118.6W ml=2.0  EMSC   NEVADA

O: 15JAN2021 23:42:42  37.4N  118.6W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P: 15JAN2021 130320    37.4N  118.6W 2.5-4.5 AAAAA  California/Nevada area     

 

The strongest earthquake in the U.S. or Canada today was an M 4.4 in the eastern Andreanof Islands, Aleutians, Alaska.  This follows an M 4.9 about 100 km northwest of today's event on January 14, 2021. Forecast 130432 had expected today's event in this area was likely around January 17.

 

O: 16JAN2021 03:37:42  52.8N  174.8W mb=4.4  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 17JAN2021 130432    52.2N  173.9W 3.5-5.1 AAAAA  Andreanoff Isls, Aleutians 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 15JAN2021 08:52:26  24.7N  122.0E ML=4.0  TAI    Hualien, Taiwan              

P: 13JAN2021 130314    24.0N  123.0E 4.0-5.5 AAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity I in Yilan, Taoyuan and Hsinchu Counties, Taiwan.

 

O: 15JAN2021 23:24:19  26.8N   55.2E mb=4.3  EMSC   SOUTHERN IRAN

O: 15JAN2021 21:31:05  26.9N   55.3E Mw=5.4  EMSC   SOUTHERN IRAN                

P:  9JAN2021 129973    27.0N   56.0E 3.5-5.1 CAAAA  So. Iran/Persian Gulf      

P: 17JAN2021 130312    28.0N   55.0E 3.5-4.9 ABAAA  So. Iran/Persian Gulf      

 

O: 15JAN2021 07:54:43  51.2N  100.4E mb=4.2  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 15JAN2021 23:12:41  51.5N  100.5E mb=4.2  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 AABAA  So. Siberia                

 

O: 15JAN2021 12:32:44  38.5N   97.2E mb=4.4  EMSC   NORTHERN QINGHAI, CHINA      

P:  9JAN2021 130036    39.0N  100.0E 3.5-4.9 CACAA  So. China                  

 

O: 15JAN2021 22:29:47  54.9N  111.7E mb=4.1  EMSC   LAKE BAYKAL REGION, RUSSIA   

P: 20JAN2021 130448    56.0N  110.0E 3.0-4.4 BBBAA  So. Siberia                

 

O: 15JAN2021 17:32:58  56.0N  164.7E mb=4.7  EMSC   KOMANDORSKIYE OSTROVA REGION 

P: 17JAN2021 130440    56.0N  163.0E 4.0-5.7 AAAAA  Komandorsky Isl            

 

INDONESIA AND PHILIPPINES

 

O: 15JAN2021 23:00:02   1.5N  125.9E mb=5.1  EMSC   MOLUCCA SEA                  

P: 17JAN2021 130233     2.0N  126.0E 4.0-5.5 AAAAA  Mindanao, Philippines      

 

NEIC reported this earthquake of M 5.1 in Molucca and Sulawesi, Indonesia was felt with intensity II-III in the area(s) of Molucca and Sulawesi, Indonesia at Bitung and Manado, Sulawesi.

 

O: 15JAN2021 11:28:25   2.0N   96.3E mb=4.7  EMSC   SIMEULUE, INDONESIA          

P: 14JAN2021 130234     3.0N   95.0E 4.0-5.4 AAAAA  Nicobar Islands            

 

O: 15JAN2021 09:48:24   2.2S  129.3E ML=4.0  EMSC   SERAM, INDONESIA             

P: 18JAN2021 130264     5.0S  131.0E 4.0-5.4 BCBAA  West Irian, PNG            

 

O: 15JAN2021 08:21:12   2.8N  128.7E mb=4.8  EMSC   HALMAHERA, INDONESIA         

P: 16JAN2021 130232     4.0N  129.0E 4.0-5.4 ABAAA  Halmahera                  

 

O: 15JAN2021 23:32:56   3.0S  119.0E mb=4.9  EMSC   SULAWESI, INDONESIA          

P: 16JAN2021 130260     1.0S  120.0E 4.0-5.5 ABAAA  Sulawesi area              

 

O: 15JAN2021 15:52:54   3.6S  149.8E Mw=5.1  EMSC   BISMARCK SEA                 

P: 12JAN2021 130248     5.0S  151.0E 4.0-5.6 BBAAA  New Ireland                

 

O: 15JAN2021 20:18:27   7.0S  155.7E mb=5.1  EMSC   SOLOMON ISLANDS              

P: 13JAN2021 130259     7.0S  156.0E 4.0-5.4 AAAAA  Solomon Islands            

P: 15JAN2021 130247     7.0S  154.0E 4.0-5.4 AABAA  New Britain                

 

O: 15JAN2021 14:17:07   8.2S  108.6E ML=4.5  EMSC   JAVA, INDONESIA              

P: 17JAN2021 130257     9.0S  108.0E 4.0-5.4 AAAAA  So. of Java                

 

O: 16JAN2021 06:42:19   8.8S  125.9E ML=4.1  EMSC   EAST TIMOR REGION            

P: 17JAN2021 130239     7.0S  126.0E 4.0-5.5 ABAAA  Banda Sea                  

 

O: 15JAN2021 22:48:56  13.9N  120.8E mb=4.6  EMSC   MINDORO, PHILIPPINES         

P: 12JAN2021 130280    14.0N  122.0E 3.5-5.1 BAAAA  Luzon, Philippines         

 

CENTRAL AND SOUTH AMERICA

 

O: 16JAN2021 03:54     31.0S   71.4W mb=5.1  GUC    Coquimbo at Andacollo, Combarb

P: 14JAN2021 130507    31.0S   71.0W 4.0-5.9 AAAAA  Central Chile              

 

GUC reported this earthquake was felt with intensity V in  Coquimbo at Andacollo, Combarbala, Monte Patria, Ovalle, Paiguano, Punitaqui, Rio Hurtado, Salamanca; IV in Vicuna, Coqimbo, Illapel, La Higuera, La Serena and III in Canela; in Valparaiso with IV in Zapallar and III in Quilpue, San Felipe, and Villa Alemana, Chile.

 

 

O: 15JAN2021 10:35:17   1.1N   79.7W mb=4.7  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 18:45:49   1.1N   79.7W ML=4.2  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 19:37:03   1.1N   79.6W ML=4.3  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 23:35:26   1.1N   79.8W ML=4.3  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 21:54:46   1.2N   79.7W ML=4.4  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 21:56:50   1.2N   79.8W ML=4.0  EMSC   NEAR COAST OF ECUADOR

O: 15JAN2021 19:21:16   1.0N   79.8W mb=4.8  EMSC   NEAR COAST OF ECUADOR        

O: 15JAN2021 23:44:50   2.6S   82.1W ML=4.0  EMSC   OFF COAST OF ECUADOR         

P: 15JAN2021 130243     1.0S   81.0W 4.0-5.7 ABAAA  Ecuador                    

 

NEIC reported this earthquake of M 4.7 in Ecuador was felt with intensity II-III in the area(s) of Ecuador at Esmeraldas.

 

O: 15JAN2021 12:47:30  11.4N   83.8W ML=4.7  EMSC   NICARAGUA                    

P: 20JAN2021 130267    10.0N   84.0W 3.5-5.2 BBAAA  Caribbean Sea              

 

O: 16JAN2021 05:13:56   4.9N   83.0W mb=4.3  EMSC   SOUTH OF PANAMA

O: 16JAN2021 05:18:05   4.9N   82.5W Mw=5.2  EMSC   SOUTH OF PANAMA              

P: 18JAN2021 130230     4.0N   83.0W 4.0-5.7 AAAAA  Ecuador                    

 

O: 15JAN2021 23:51:13  12.9S   77.2W mb=4.6  EMSC   NEAR COAST OF CENTRAL PERU   

P: 12JAN2021 130475    13.0S   77.0W 4.0-5.7 BAAAA  Central Peru               

 

NEIC reported this earthquake of M 4.6 in Central Peru was felt with intensity II-III in the area(s) of Central Peru in Chilca, Lima (IV) and San Luis Lima.

 

O: 15JAN2021 17:09:08  13.0N   88.8W mb=4.5  EMSC   OFFSHORE EL SALVADOR         

P: 15JAN2021 130271    14.0N   89.0W 3.5-5.2 AAAAA  Coast of Central America   

 

NEIC reported this earthquake of M 4.5 in El Salvador was felt with intensity II-III in the area(s) of El Salvador in El Rosario, Antiguo and Mejicanos.

 

O: 15JAN2021 21:32:59  14.1N   91.9W mb=4.9  EMSC   OFFSHORE GUATEMALA           

P: 17JAN2021 130274    13.0N   91.0W 3.5-5.3 AAAAA  Guatemala                  

 

O: 16JAN2021 03:37:02  14.7N   93.6W ML=4.3  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 17JAN2021 130269    14.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

P: 17JAN2021 130274    13.0N   91.0W 3.5-5.3 AAAAA  Guatemala                  

 

O: 15JAN2021 18:39:23  16.8N   99.8W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 18JAN2021 130290    16.0N  100.0W 3.5-5.4 BAAAA  Oaxaca, Mexico             

 

O: 16JAN2021 05:10:16  17.5N   67.5W Md=3.2  EMSC   PUERTO RICO REGION           

P: 14JAN2021 130291    18.0N   67.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 16JAN2021 04:36:06  17.6N   92.9W ML=4.0  EMSC   TABASCO, MEXICO              

P: 13JAN2021 130274    15.0N   92.0W 3.5-5.4 AAAAA  Guatemala                  

P: 17JAN2021 130269    14.0N   93.0W 3.5-5.3 ACAAA  Chiapas, Mexico            

 

O: 15JAN2021 18:48:10  17.8N   65.7W ML=3.0  EMSC   PUERTO RICO REGION           

P: 12JAN2021 130278    18.0N   65.0W 3.0-4.9 BAAAA  Leeward Islands            

 

O: 15JAN2021 23:31:50  17.9N   68.7W ML=3.3  EMSC   DOMINICAN REPUBLIC REGION    

P: 16JAN2021 130292    18.0N   69.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 15JAN2021 08:33:21  18.6N   69.0W ML=3.3  EMSC   DOMINICAN REPUBLIC

O: 16JAN2021 00:11:27  18.7N   69.0W ML=3.5  EMSC   DOMINICAN REPUBLIC

O: 15JAN2021 08:09:31  20.3N   71.0W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION

O: 15JAN2021 10:52:15  20.3N   70.9W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P: 14JAN2021 130298    20.0N   72.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O: 15JAN2021 20:37:54  24.1S   67.2W mb=4.7  EMSC   SALTA, ARGENTINA             

P: 20JAN2021 130494    24.0S   67.0W 4.0-5.8 BAAAA  Argentina                  

 

O: 15JAN2021 18:57:35  27.6N  111.6W ML=3.7  EMSC   GULF OF CALIFORNIA           

P: 19JAN2021 130302    28.0N  112.0W 3.5-4.9 BAAAA  Gulf of California         

 

O: 15JAN2021 19:51:35  28.1N  107.2W ML=3.9  EMSC   CHIHUAHUA, MEXICO            

P: 19JAN2021 130302    28.0N  112.0W 3.5-4.9 AAAAA  Gulf of California         

 

O: 16JAN2021 03:53:35  31.0S   71.4W Mw=5.1  EMSC   COQUIMBO, CHILE              

O: 16JAN2021 03:51:58  31.6S   69.5W ML=4.9  EMSC   SAN JUAN, ARGENTINA          

P: 14JAN2021 130507    31.0S   71.0W 4.0-5.9 AAAAA  Central Chile              

 

NEIC reported this earthquake of M 5.0 in Coquimbo, Chile was felt with intensity II-III in the area(s) of Coquimbo, Chile in Ovalle (IV), La Serena, La Ligua, Valparaiso, Los Andes, Santiago and Machali, O'Higgins.

 

O: 15JAN2021 23:41:07  13.3N   91.8W mb=4.1  EMSC   OFFSHORE GUATEMALA

O: 16JAN2021 04:27:06  13.7N   92.4W ML=4.1  EMSC   OFFSHORE GUATEMALA

O: 15JAN2021 18:47:05  13.8N   92.1W ML=4.0  EMSC   OFFSHORE GUATEMALA

O: 15JAN2021 16:10:50  14.0N   92.1W Mw=5.9  EMSC   OFFSHORE GUATEMALA

O: 15JAN2021 18:00:02  14.1N   92.8W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 15JAN2021 21:32:59  14.1N   91.9W mb=4.9  EMSC   OFFSHORE GUATEMALA           

P: 17JAN2021 130274    13.0N   91.0W 3.5-5.3 AAAAA  Guatemala                  

 

AFRICA AND EUROPE

 

O: 16JAN2021 04:20:54  28.1N   16.2W ML=2.3  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14JAN2021 130300    28.0N   16.0W 3.0-4.5 AAAAA  Canary Islands             

 

O: 15JAN2021 12:01:36  45.5N   16.0E ML=4.1  EMSC   CROATIA                      

P: 13JAN2021 130381    45.0N   16.0E 3.0-5.2 AAAAA  Adriatic Sea               

 

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

 

SOUTHWEST PACIFIC

 

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

 

OCEAN RIDGES

 

O: 15JAN2021 07:36:25  34.7S   14.7W mb=5.0  EMSC   TRISTAN DA CUNHA REGION      

 

O: 15JAN2021 13:19:12  37.1S   17.1W mb=5.2  EMSC   SOUTHERN MID-ATLANTIC RIDGE

O: 15JAN2021 18:38:02  37.1S   17.4W mb=4.7  EMSC   SOUTHERN MID-ATLANTIC RIDGE

O: 15JAN2021 07:03:16  37.2S   17.2W mb=4.5  EMSC   SOUTHERN MID-ATLANTIC RIDGE

O: 15JAN2021 10:45:21  37.2S   17.2W Mw=5.4  EMSC   SOUTHERN MID-ATLANTIC RIDGE

O: 15JAN2021 07:52:22  37.4S   17.3W mb=4.9  EMSC   SOUTHERN MID-ATLANTIC RIDGE

O: 15JAN2021 09:57:22  37.1S   17.3W mb=4.6  EMSC   SOUTHERN MID-ATLANTIC RIDGE  

 

Note that the M 5.2 occurred within about 15 minutes of local solar noon and

may have been promoted by strong tidal stresses which maximize near this hour.

 

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: 15JAN2021 15:40:30  25.0N  125.6E ML=4.0  EMSC   SOUTHWESTERN RYUKYU ISL., JAPA

P: 17JAN2021 130310    26.0N  125.0E 4.0-5.6 AAAAA  Ryukyu Islands             

 

O: 15JAN2021 13:38:18  33.8N  137.2E Mw=5.2  EMSC   NEAR S. COAST OF HONSHU, JAPAN

P: 18JAN2021 130331    33.0N  138.0E 3.5-5.0 BAAAA  Central/So. Honshu Japan   

 

NEIC reported this earthquake of M 5.2 in southern Honshu, Japan was felt with intensity II-III in the area(s) of southern Honshu, Japan in Kanagawa, Tokyo, Saitama and Fukushima.

 

O: 15JAN2021 08:40:05  42.5N  143.3E mb=4.8  EMSC   HOKKAIDO, JAPAN REGION

O: 15JAN2021 20:10:13  42.2N  144.2E mb=4.3  EMSC   HOKKAIDO, JAPAN REGION       

P: 18JAN2021 130388    42.0N  144.0E 3.5-5.7 AAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

 

O: 15JAN2021 07:13:57  36.5N  117.0W ML=2.3  EMSC   CENTRAL CALIFORNIA            

P: 14JAN2021 130319    36.3N  117.8W 2.5-4.7 AAAAA  California/Nevada area     

 

O: 15JAN2021 23:42:42  37.4N  118.6W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P: 15JAN2021 130320    37.4N  118.6W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 15JAN2021 10:55:49  40.5N  123.7W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 14JAN2021 130408    40.0N  123.0W 2.5-4.4 AAAAA  Northern California        

 

O: 15JAN2021 17:13:18  32.8N  115.8W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 15JAN2021 17:19:01  32.8N  115.8W ML=2.3  EMSC   SOUTHERN CALIFORNIA

O: 16JAN2021 03:44:29  32.7N  115.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 15JAN2021 130359    32.8N  115.4W 2.5-4.6 AAAAA  So. California             

 

O: 15JAN2021 17:25:41  38.1N  118.0W ML=2.4  EMSC   NEVADA

O: 15JAN2021 15:45:45  38.2N  117.8W ML=3.6  EMSC   NEVADA

O: 15JAN2021 15:56:41  38.2N  117.7W ml=2.4  EMSC   NEVADA

O: 15JAN2021 16:07:01  38.2N  117.7W ml=2.3  EMSC   NEVADA

O: 15JAN2021 13:22:15  38.1N  118.0W ml=2.7  EMSC   NEVADA                        

P: 15JAN2021 130320    38.0N  118.0W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 16JAN2021 00:53:25  37.6N  118.9W Md=2.3  EMSC   LONG VALLEY AREA, CALIFORNIA

O: 16JAN2021 05:08:20  37.6N  118.9W Md=2.0  EMSC   LONG VALLEY AREA, CALIFORNIA

O: 15JAN2021 08:37:26  37.9N  118.6W ml=2.0  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 17:52:08  37.9N  118.6W ml=2.3  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 20:02:03  37.9N  118.6W ml=3.3  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 20:38:11  37.9N  118.6W ML=2.8  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 20:47:01  37.9N  118.6W ML=2.1  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 21:13:21  37.9N  118.6W ml=2.1  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 22:11:07  37.9N  118.5W Mw=3.9  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 22:18:23  37.9N  118.6W ml=2.3  EMSC   CENTRAL CALIFORNIA

O: 15JAN2021 22:50:15  37.9N  118.5W ML=2.8  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 06:32:14  37.9N  118.6W MD=2.9  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 06:41:25  37.9N  118.6W Md=2.1  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 06:52:20  37.9N  118.7W ml=2.9  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 06:55:27  37.9N  118.5W MD=2.5  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 06:56:33  37.9N  118.6W ml=3.0  EMSC   CENTRAL CALIFORNIA

O: 16JAN2021 01:03:41  38.0N  118.6W ml=2.0  EMSC   NEVADA

O: 15JAN2021 23:42:42  37.4N  118.6W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P: 15JAN2021 130320    37.4N  118.6W 2.5-4.5 AAAAA  California/Nevada area     

 

ALASKA

 

O: 16JAN2021 03:42:58  52.0N  171.0W ML=3.2  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 20JAN2021 130438    51.9N  169.2W 3.5-5.2 BABAA  Fox Islands, Aleutians     

 

O: 16JAN2021 03:37:42  52.8N  174.8W mb=4.4  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 17JAN2021 130432    52.2N  173.9W 3.5-5.1 AAAAA  Andreanoff Isls, Aleutians 

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 15JAN2021 08:03:39  44.5N  129.4W mb=3.8  EMSC   OFF COAST OF OREGON          

P: 14JAN2021 130411    44.4N  129.3W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

O: 15JAN2021 19:17:48  47.6N  122.6W Ml=2.2  EMSC   SEATTLE-TACOMA AREA, WASHINGTON

O: 15JAN2021 16:36:06  47.3N  122.0W Md=2.4  EMSC   PUGET SOUND REGION, WASHINGTON

O: 15JAN2021 10:06:49  46.9N  121.9W ML=2.6  EMSC   WASHINGTON                   

O: 16JAN2021 04:32:23  47.5N  121.7W Md=2.2  EMSC   WASHINGTON                   

P: 19JAN2021 130424    47.5N  121.8W 2.0-4.2 BAAAA  Washington state, U.S.     

 

O: 15JAN2021 12:32:27  48.5N  128.8W MB=3.7  ECAN Tofino, BC                     

P: 13JAN2021 130423    48.7N  129.0W 2.8-5.0 AAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 15JAN2021 12:27:05  45.0N  112.9W Ml=2.0  EMSC   WESTERN MONTANA              

P: 18JAN2021 130398    45.7N  112.1W 2.0-3.9 BAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 15JAN2021 18:17:01  35.9N   89.9W mb=2.9  EMSC   ARKANSAS                     

P: 16JAN2021 130343    36.0N   89.0W 2.0-3.9 AAAAA  New Madrid area            

 

NEIC reported this earthquake of M 2.8 in northern Arkansas was felt with intensity II-III in the area(s) of northern Arkansas at Blytheville and Augusta (IV) and in Springfield, Missouri. Lesser shaking occurred in Illinois, Alabama, and Kentucky.

 

O: 16JAN2021 02:13:36  36.2N   98.4W mb=2.2  EMSC   OKLAHOMA                     

P: 18JAN2021 130369    36.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 16JAN2021 05:49:14  38.3N   79.3W mb=2.6  EMSC   VIRGINIA                     

P:  8JAN2021 130003    37.2N   81.9W 2.0-3.9 CBBAA  Kentucky/Tennessee/NC      

 

HAWAII

 

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

 

STRONG EARTHQUAKE IN SULAWESI, INDONESIA

 

EARTHQUAKE SUMMARY FOR JANUARY 14, 2021

 

The strongest earthquake in the world today was an M 6.2 in Sulawesi, Indonesia. NEIC reported it was felt with damage in Sulawesi at Majene and Polewali with lesser shaking at Palu and Dengasar, Bali, Indonesia. BMG reported intensity IV-V in Majene; III in Palu and II in Makasar, Sulawesi, Indonesia. This follows a foreshock of M 5.7 which hit the area yesterday and was noted in this summary in the previous issue as:

 

"The strongest earthquake in the world today was an M 5.7 in Sulawesi, Indonesia. It was not reported felt in this area but was probably felt lightly in the epicentral area. This event occurred within about an hour of local solar noon and was probably enhanced by tidal stresses associated with the new moon as noted in previous issues of this summary:

 

"The new moon will arrive at 05:00 UT on January 13. Longitudes which are at sub-lunar conditions (local solar midnight) at this time are near 75 West and those at sub-solar conditions (local solar noon) are near 105 East. These include in the west, the west coast of South America and eastern North America and in the east western and central Indonesia, the Philippines and Taiwan among others. These areas are most likely to see tidally enhanced seismicity in the next week through January 17, 2021. Tidal enhancement is most likely near local solar noon and midnight. A strong global earthquake is likely in this period." (January 8-12, 2021)

 

It is also located near the geomagnetic equator and may have been promoted by the geomagnetic storm two days ago. Forecast 130260 had expected today's event within about 200 km of this epicenter was likely around January 16. This area often sees a series of moderate to large earthquakes and more such activity may be seen in the next several days. This epicenter is at  the seventh node (51-52 degrees) from the M 6.7 in Mongolia of January 11 and may have been promoted by energy from that source." (January 13-14, 2021)

 

Like the M 5.7 foreshock, the M 6.2 was also probably promoted by high tidal stresses as it occurred near local solar midnight. The last earthquake within about 300 km of today's event of equal or greater magnitude was an M 7.5 on September 28, 2018 about 300 km northeast of today's epicenter. The last within about 250 km was an M 6.3 on August 18, 2012 and prior to that an M 6.3 on January 23, 2005, the largest events in this area in the past 30 years. Forecast 130260 had expected today's event in this area was likely around January 16.

 

O: 14JAN2021 18:41:54   2.9S  118.9E ML=4.0  EMSC   SULAWESI, INDONESIA

O: 14JAN2021 18:28:17   3.0S  118.9E Mw=6.2  EMSC   SULAWESI, INDONESIA

O: 15JAN2021 00:25:27   3.0S  119.0E ML=4.3  EMSC   SULAWESI, INDONESIA

O: 14JAN2021 18:39:55   3.3S  118.7E ML=3.9  EMSC   SULAWESI, INDONESIA          

P: 16JAN2021 130260     1.0S  120.0E 4.0-5.5 ACBAA  Sulawesi area              

 

The most widely felt earthquake in the U.S. today was an M 3.6 in the San Francisco Bay area of California. NEIC reported it was felt with intensity III in Concord, Pleasant Hill, Walnut Creek, Lafayette and Martinez, California among many other communities within about 150 km of the epicenter. This is the strongest earthquake within about 100 km of this epicenter in the San Francisco Bay area since an M 4.3 on July 16, 2019. Forecast 130327 had expected this earthquake was likely around January 12 within about 10 km of the epicenter. The M 3.6 occurred within about 45 minutes of local solar noon, a time when tidal stresses are maximized and may have been promoted by those stresses which are high with the new moon.

 

O: 14JAN2021 19:26:24  38.0N  122.0W Md=2.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O: 14JAN2021 19:18:10  38.0N  122.0W Mw=3.6  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 12JAN2021 130327    37.9N  122.0W 2.5-4.9 AAAAA  Central California         

 

The strongest earthquake in the U.S. or Canada today was an M 4.0-4.7 in Hawaii. NEIC reported it was felt with intensity V in Pahala and IV in Captain Cook and II-III in Hawaii National Park, Naalehu, Volcano, Pahoa, Mountain View, Hilo and Holualoa and Kurtistown. This is part of the continuing eruption of Kilauea Volcano on Hawaii but is the strongest event in the region since the current eruption began. An M 4.7 hit north of this on July 27, 2020 but the last in the area of Kilauea was an M 5.3 on March 13, 2019 and at the end of the previous eruption on August 2, 2018. Forecast 130276 had expected a moderate quake in Hawaii was likely in mid-January.

 

O: 15JAN2021 04:15:09  19.2N  155.4W mb=4.7  EMSC   ISLAND OF HAWAII, HAWAII     

P: 12JAN2021 130276    19.2N  155.1W 3.0-4.5 BAAAA  Hawaii                     

 

An unusual earthquake of M 2.9 was felt in the Panhandle of Texas today with intensity IV in Amarillo and Panhandle, Texas. The last earthquake with M>=2.9 within about 100 km of today's epicenter was an M 3.7 on October 20, 2018 and prior to that an M 3.1 on February 2, 2015. Forecast 130357 had expected today's event within about 35 km of this epicenter was likely around January 13.

 

O: 14JAN2021 23:30:10  35.2N  101.6W mb=2.9  EMSC   TEXAS PANHANDLE REGION       

P: 13JAN2021 130357    35.4N  101.8W 2.0-4.1 AAAAA  SW U.S.A                   

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 14JAN2021 16:28:11  25.4N  124.4E mb=4.7  EMSC   NORTHEAST OF TAIWAN          

P: 17JAN2021 130310    26.0N  125.0E 4.0-5.6 BAAAA  Ryukyu Islands             

 

O: 14JAN2021 11:40:30  27.7N   86.2E ML=4.0  EMSC   NEPAL                        

P: 20JAN2021 130308    27.0N   88.0E 3.5-5.4 CABAA  Nepal                      

 

O: 14JAN2021 11:20:40  36.5N   53.0E ML=4.0  EMSC   NORTHERN IRAN                

P: 17JAN2021 130347    37.0N   55.0E 3.8-5.4 BABAA  No. Iran                   

 

O: 14JAN2021 19:29:52  51.4N  100.6E mb=4.4  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 14JAN2021 20:26:15  51.6N  100.5E mb=4.6  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 14JAN2021 07:38:05  51.4N  100.3E mb=4.2  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 AABAA  So. Siberia                

 

O: 14JAN2021 09:09:30  54.6N  160.9E mb=3.9  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 18JAN2021 130437    53.0N  160.0E 4.0-5.5 BBAAA  E. of Kamchatka            

 

INDONESIA AND PHILIPPINES

 

O: 15JAN2021 02:50:53   0.0N  127.2E mb=4.7  EMSC   HALMAHERA, INDONESIA         

P: 20JAN2021 130232     1.0N  128.0E 4.0-5.4 BAAAA  Halmahera                  

 

O: 14JAN2021 07:30:32   0.2N  124.9E ML=4.1  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 16JAN2021 130233     1.0N  124.0E 4.0-5.4 AAAAA  Mindanao, Philippines      

 

O: 14JAN2021 19:47:57   0.5N   99.7E ML=4.5  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 14JAN2021 130236     1.0N  100.0E 4.0-5.4 AAAAA  So. Sumatera               

 

O: 14JAN2021 16:51:01   1.4N   97.1E mb=4.6  EMSC   NIAS REGION, INDONESIA       

P: 14JAN2021 130236     0.0N   98.0E 4.0-5.4 ABAAA  So. Sumatera               

 

O: 14JAN2021 18:39:55   3.3S  118.7E ML=3.9  EMSC   SULAWESI, INDONESIA          

P: 16JAN2021 130260     1.0S  120.0E 4.0-5.5 ACBAA  Sulawesi area              

 

O: 14JAN2021 19:46:58   6.1S  120.9E ML=4.4  EMSC   FLORES SEA                   

P: 14JAN2021 130244     7.0S  121.0E 4.0-5.7 AAAAA  Flores Island area         

 

O: 14JAN2021 21:23:51   8.6S  118.4E ML=3.9  EMSC   SUMBAWA REGION, INDONESIA    

P: 17JAN2021 130262     8.0S  119.0E 4.0-5.7 BAAAA  Sumbawa Island area        

 

 

O: 14JAN2021 18:41:54   2.9S  118.9E ML=4.0  EMSC   SULAWESI, INDONESIA

O: 14JAN2021 18:28:17   3.0S  118.9E Mw=6.2  EMSC   SULAWESI, INDONESIA

O: 15JAN2021 00:25:27   3.0S  119.0E ML=4.3  EMSC   SULAWESI, INDONESIA

O: 14JAN2021 18:39:55   3.3S  118.7E ML=3.9  EMSC   SULAWESI, INDONESIA          

P: 16JAN2021 130260     1.0S  120.0E 4.0-5.5 ACBAA  Sulawesi area              

 

CENTRAL AND SOUTH AMERICA

 

O: 15JAN2021 04:20:54  13.6N   91.8W mb=4.4  EMSC   OFFSHORE GUATEMALA           

P: 17JAN2021 130274    13.0N   91.0W 3.5-5.3 AAAAA  Guatemala                  

 

O: 15JAN2021 05:39:56  16.2N   97.6W ML=4.3  EMSC   OAXACA, MEXICO               

P: 14JAN2021 130290    18.0N   97.0W 3.5-5.3 ABAAA  Oaxaca, Mexico             

 

O: 14JAN2021 19:18:54  18.2N  103.2W ML=3.9  EMSC   OFFSHORE MICHOACAN, MEXICO   

P: 17JAN2021 130283    18.0N  103.0W 3.5-5.1 BAAAA  Michoacan, Mexico          

 

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

 

AFRICA AND EUROPE

 

NEIC reported an earthquake of M 4.2 in Greece was felt with intensity V in the area(s) of Greece at Rododafni.

 

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

 

SOUTHWEST PACIFIC

 

O: 15JAN2021 04:19:35  20.7S  178.5W mb=4.4  EMSC   FIJI REGION                  

P: 13JAN2021 130505    21.0S  174.0W 4.0-5.8 AACAA  Tonga Islands              

 

O: 14JAN2021 15:03:38  24.1S  179.2E mb=4.6  EMSC   SOUTH OF FIJI ISLANDS        

P: 17JAN2021 130506    23.0S  179.0E 4.0-5.5 BBAAA  Tonga/Fiji                 

 

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

 

OCEAN RIDGES

 

O: 14JAN2021 17:20:29  73.6N    8.2E mb=4.3  EMSC   GREENLAND SEA                

P: 10JAN2021 130141    74.0N   14.0E 3.0-4.8 AAAAA  Norway                     

P: 18JAN2021 130471    74.0N   14.0E 3.0-4.9 AAAAA  Norway                     

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 14JAN2021 08:20:52  34.5S  175.9E ML=4.4  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 16JAN2021 130513    39.0S  176.0E 3.0-4.4 ACAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 14JAN2021 11:17:03  33.2N  138.4E mb=4.1  EMSC   IZU ISLANDS, JAPAN REGION    

P: 13JAN2021 130331    34.0N  139.0E 3.5-5.1 AAAAA  Central/So. Honshu Japan   

 

O: 15JAN2021 03:59:30  37.2N  141.2E ML=3.8  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 12JAN2021 130351    37.0N  142.0E 4.0-5.4 BAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 14JAN2021 14:48:13  32.8N  115.5W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 15JAN2021 130359    32.8N  115.4W 2.5-4.6 AAAAA  So. California             

 

O: 15JAN2021 06:05:48  34.1N  116.9W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 16JAN2021 130362    34.3N  116.5W 2.5-4.4 AAAAA  So. California             

 

O: 14JAN2021 22:25:43  36.3N  115.6W ml=2.2  EMSC   NEVADA                       

P: 18JAN2021 130321    37.8N  115.8W 2.5-4.4 BBAAA  California/Nevada area     

 

O: 15JAN2021 04:47:57  37.4N  118.8W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P: 15JAN2021 130320    37.4N  118.6W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 14JAN2021 07:44:27  38.2N  117.9W ml=2.3  EMSC   NEVADA                       

P: 15JAN2021 130320    38.0N  118.0W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 14JAN2021 20:11:12  40.9N  123.8W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P: 14JAN2021 130408    40.0N  123.0W 2.5-4.4 AAAAA  Northern California        

 

 

O: 14JAN2021 19:26:24  38.0N  122.0W Md=2.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O: 14JAN2021 19:18:10  38.0N  122.0W Mw=3.6  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 12JAN2021 130327    37.9N  122.0W 2.5-4.9 AAAAA  Central California         

 

ALASKA

 

O: 14JAN2021 22:31:39  56.6N  156.5W ML=3.6  EMSC   ALASKA PENINSULA             

P: 15JAN2021 130430    54.8N  158.7W 3.5-4.9 ABBAA  Alaska Peninsula           

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 14JAN2021 05:18:23  52.9N  132.6W MB=3.0  ECAN Village of Queen Charlotte, BC 

P: 16JAN2021 130435    52.0N  131.0W 3.0-5.2 AAAAA  British Colombia           

 

O: 14JAN2021 01:02:38  62.2N  124.4W MB=3.3  ECAN Wrigley, NT                    

P: 17JAN2021 130464    62.1N  124.2W 2.5-4.2 BAAAA  Northwest Terr., Canada    

 

O: 13JAN2021 23:29:52  50.4N  130.2W MB=3.9  ECAN Port Hardy, BC                 

P: 14JAN2021 130435    50.9N  130.6W 3.0-5.1 AAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 14JAN2021 23:30:10  35.2N  101.6W mb=2.9  EMSC   TEXAS PANHANDLE REGION       

P: 13JAN2021 130357    35.4N  101.8W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 14JAN2021 23:31:24  40.7N  112.1W ML=2.0  EMSC   WASATCH FRONT URBAN AREA, UTAH

P: 15JAN2021 130376    39.6N  111.9W 2.0-3.9 ABAAA  Utah area                  

 

EASTERN U.S./CANADA

 

O: 14JAN2021 08:52:13  68.9N   69.2W MB=3.0  ECAN Clyde River, NU                

O: 14JAN2021 08:52:13  68.8N   69.2W ML=3.0  EMSC   BAFFIN ISLAND REGION, CANADA 

O: 13JAN2021 21:48:14  65.5N   67.5W MB=2.6  ECAN Pangnirtung, NU                

O: 13JAN2021 22:41:23  68.9N   69.3W MB=3.1  ECAN Clyde River, NU                

P: 20JAN2021 130470    71.0N   75.0W 2.5-4.0 CCAAA  Baffin/Davis Strait Canada 

 

O: 13JAN2021 17:52:27  71.1N   70.9W MB=3.5  ECAN Clyde River, NU                

P: 15JAN2021 130470    73.3N   73.5W 2.5-4.1 ACAAA  Baffin/Davis Strait Canada 

 

HAWAII

 

O: 15JAN2021 04:15:09  19.2N  155.4W mb=4.7  EMSC   ISLAND OF HAWAII, HAWAII     

P: 12JAN2021 130276    19.2N  155.1W 3.0-4.5 BAAAA  Hawaii                     

 

MODERATELY STRONG QUAKE IN SULAWESI, INDONESIA

 

EARTHQUAKE SUMMARY FOR JANUARY 13, 2021

 

The strongest earthquake in the world today was an M 5.7 in Sulawesi, Indonesia.

It was not reported felt in this area but was probably felt lightly in the epicentral area. This event occurred within about an hour of local solar noon and was probably enhanced by tidal stresses associated with the new moon as noted in previous issues of this summary:

 

"The new moon will arrive at 05:00 UT on January 13. Longitudes which are at sub-lunar conditions (local solar midnight) at this time are near 75 West and those at sub-solar conditions (local solar noon) are near 105 East. These include in the west, the west coast of South America and eastern North America and in the east western and central Indonesia, the Philippines and Taiwan among others. These areas are most likely to see tidally enhanced seismicity in the next week through January 17, 2021. Tidal enhancement is most likely near local solar noon and midnight. A strong global earthquake is likely in this period." (January 8-12, 2021)

 

It is also located near the geomagnetic equator and may have been promoted by the geomagnetic storm two days ago. Forecast 130260 had expected today's event within about 200 km of this epicenter was likely around January 16. This area often sees a series of moderate to large earthquakes and more such activity may be seen in the next several days. This epicenter is at  the seventh node (51-52 degrees) from the M 6.7 in Mongolia of January 11 and may have been promoted by energy from that source.

 

O: 14JAN2021 06:35:50   2.9S  118.9E Mw=5.7  EMSC   SULAWESI, INDONESIA          

P: 16JAN2021 130260     1.0S  120.0E 4.0-5.5 ABAAA  Sulawesi area              

 

The strongest earthquake in the U.S. or Canada today was an M 4.9 in the eastern Andreanof Islands, Aleutians, Alaska. It was not reported felt in this remote area. This is the strongest earthquake within about 150 km in the eastern Andreanof Islands since an M 5.3 on October 1, 2020 and prior to that an M 5.0 on February 13, 2020. Forecast 130432 had expected today's activity within about 100 km was likely around January 13.

 

O: 14JAN2021 05:13:52  51.6N  174.0W mb=4.9  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 13JAN2021 130432    51.1N  174.6W 3.5-5.0 AAAAA  Andreanoff Isls, Aleutians 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 13JAN2021 19:15:37  25.0N   93.5E mb=4.3  EMSC   ASSAM-NAGALAND-MANIPUR, INDIA

P:  9JAN2021 129968    27.0N   92.0E 4.0-5.4 BBBAA  Myanmar                    

 

O: 13JAN2021 22:57:19  27.3N   57.9E mb=4.3  EMSC   SOUTHERN IRAN                

P: 12JAN2021 130312    29.0N   58.0E 3.5-5.4 ABAAA  So. Iran/Persian Gulf      

 

O: 13JAN2021 11:10:09  51.6N  100.3E mb=4.9  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 13JAN2021 10:06:19  51.5N  100.4E mb=4.2  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 AABAA  So. Siberia                

 

INDONESIA AND PHILIPPINES

 

O: 13JAN2021 12:03:56   1.2N  127.4E ML=4.1  EMSC   HALMAHERA, INDONESIA

O: 13JAN2021 17:33:03   1.6N  128.2E mb=5.2  EMSC   HALMAHERA, INDONESIA         

P: 20JAN2021 130232     1.0N  128.0E 4.0-5.4 CAAAA  Halmahera                  

 

NEIC reported this earthquake of M 5.2 in Halmahera, Indonesia was felt with intensity IV in the area(s) of Halmahera, Indonesia in Ternate, Maluku Utara.

 

O: 14JAN2021 05:57:14   1.6S  121.6E ML=4.1  EMSC   SULAWESI, INDONESIA          

P: 16JAN2021 130260     1.0S  120.0E 4.0-5.5 AABAA  Sulawesi area              

 

O: 13JAN2021 23:03:57   2.0N  127.5E ML=4.4  EMSC   HALMAHERA, INDONESIA         

P: 17JAN2021 130233     2.0N  126.0E 4.0-5.5 BABAA  Mindanao, Philippines      

 

O: 14JAN2021 06:35:50   2.9S  118.9E Mw=5.7  EMSC   SULAWESI, INDONESIA          

P: 16JAN2021 130260     1.0S  120.0E 4.0-5.5 ABAAA  Sulawesi area              

 

O: 14JAN2021 05:08:34   4.0N  126.6E ML=4.0  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 15JAN2021 130232     5.0N  127.0E 4.0-5.4 AAAAA  Halmahera                  

 

O: 13JAN2021 14:35:02   5.9S  110.7E mb=4.6  EMSC   JAVA SEA                     

P: 14JAN2021 130256     9.0S  111.0E 4.0-5.5 ACAAA  So. of Java                

 

O: 13JAN2021 16:02:36   6.1S  149.4E mb=4.9  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 12JAN2021 130248     5.0S  151.0E 4.0-5.6 ABBAA  New Ireland                

 

O: 13JAN2021 15:46:26   7.2S  129.4E mb=4.5  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 14JAN2021 130264     7.0S  130.0E 4.0-5.6 AAAAA  West Irian, PNG            

 

O: 14JAN2021 00:03:20   8.1S  120.4E ML=4.5  EMSC   FLORES REGION, INDONESIA     

P: 14JAN2021 130244     7.0S  121.0E 4.0-5.7 ABAAA  Flores Island area         

 

CENTRAL AND SOUTH AMERICA

 

O: 14JAN2021 00:34:56  18.1N   70.8W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 16JAN2021 130293    19.0N   71.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 14JAN2021 02:45:52  18.4N  102.1W ML=4.1  EMSC   MICHOACAN, MEXICO            

P: 17JAN2021 130283    18.0N  103.0W 3.5-5.1 BAAAA  Michoacan, Mexico          

 

O: 13JAN2021 18:36:50  18.8N   70.3W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 16JAN2021 130293    19.0N   71.0W 3.4-5.1 BAAAA  Puerto Rico                

 

O: 13JAN2021 20:34:06  20.3N   70.6W ML=3.5  EMSC   DOMINICAN REPUBLIC REGION    

O: 13JAN2021 18:15:47  20.5N   70.9W ML=3.6  EMSC   DOMINICAN REPUBLIC REGION

P: 10JAN2021 129959    20.0N   71.0W 3.0-4.6 BAAAA  Bahamas/No. Caribbean      

 

O: 13JAN2021 21:20:31  20.6S   66.5W mb=4.1  EMSC   POTOSI, BOLIVIA              

P: 13JAN2021 130494    22.0S   68.0W 4.0-5.4 BABAA  Argentina                  

 

O: 13JAN2021 08:42:16  24.2S   67.0W mb=4.4  EMSC   SALTA, ARGENTINA              

P: 20JAN2021 130494    24.0S   67.0W 4.0-5.8 CAAAA  Argentina                  

 

O: 13JAN2021 11:36:06  29.2S   67.9W mb=4.3  EMSC   LA RIOJA, ARGENTINA          

P: 12JAN2021 130494    28.0S   68.0W 4.0-5.6 ABAAA  Argentina                  

 

 

AFRICA AND EUROPE

 

O: 13JAN2021 09:40:20  38.4N   22.0E ML=4.2  EMSC   GREECE

O: 13JAN2021 09:06:07  38.4N   22.1E ML=3.9  EMSC   GREECE                       

P: 14JAN2021 130345    38.0N   22.0E 3.0-4.6 AAAAA  No. Greece                 

 

NEIC reported this earthquake of M 4.5 in Southern Greece was felt with intensity II-III in the area(s) of Southern Greece at Rododafni, Ahaia (V) and in Nicosia, Cyprus.

 

O: 13JAN2021 22:47:34  73.6N    7.5E mb=4.3  EMSC   GREENLAND SEA                

O: 13JAN2021 23:11:54  73.6N    7.8E mb=4.4  EMSC   GREENLAND SEA                

P: 10JAN2021 130141    74.0N   14.0E 3.0-4.8 BAAAA  Norway                     

 

 

SOUTHWEST PACIFIC

 

O: 13JAN2021 15:08:56  23.5S  179.6W mb=4.5  EMSC   SOUTH OF FIJI ISLANDS        

P: 15JAN2021 130506    23.0S  180.0W 4.0-5.6 AAAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O: 13JAN2021 18:47:10  38.8N   29.3W ML=3.9  EMSC   AZORES ISLANDS, PORTUGAL

O: 13JAN2021 18:16:08  38.8N   29.4W ML=3.7  EMSC   AZORES ISLANDS, PORTUGAL     

P:  9JAN2021 130075    40.0N   30.0W 4.0-5.3 BBAAA  No. Mid-Atlantic Ridge     

P: 12JAN2021 130348    38.0N   32.0W 4.0-6.1 AABAA  No. Mid-Atlantic Ridge      

 

O: 13JAN2021 22:47:34  73.6N    7.5E mb=4.3  EMSC   GREENLAND SEA                

O: 13JAN2021 23:11:54  73.6N    7.8E mb=4.4  EMSC   GREENLAND SEA                

P: 10JAN2021 130141    74.0N   14.0E 3.0-4.8 BAAAA  Norway                     

 

Note that this earthquake of M 5.5 occurred within about 15 minutes of local

solar midnight and may have been promoted by tidal energy associated with

today's new moon.

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 13JAN2021 11:55:48  30.5S  179.3E ML=4.1  EMSC   KERMADEC ISLANDS REGION      

P: 14JAN2021 130515    33.0S  179.0E 4.0-5.4 ACAAA  So. Kermadec Islands       

 

O: 13JAN2021 17:20:06  32.2S  179.5E ML=4.2  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 14JAN2021 130515    33.0S  179.0E 4.0-5.4 AAAAA  So. Kermadec Islands       

 

O: 13JAN2021 17:37:26  44.7S  167.3E ML=4.5  EMSC   SOUTH ISLAND OF NEW ZEALAND  

P: 17JAN2021 130521    45.0S  168.0E 3.0-5.4 BAAAA  So. Island, N.Z.            

 

JAPAN AND KURIL ISLANDS

 

O: 13JAN2021 15:57:30  38.3N  141.8E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 15JAN2021 130351    38.0N  142.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

 

O: 14JAN2021 02:27:43  32.6N  115.7W ML=2.1  EMSC   BAJA CALIFORNIA, MEXICO

O: 14JAN2021 02:27:43  32.6N  115.7W ML=2.1  EMSC   BAJA CALIFORNIA, MEXICO

O: 13JAN2021 21:49:22  32.7N  115.8W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 13JAN2021 13:58:00  32.6N  115.7W Ml=2.2  EMSC   BAJA CALIFORNIA, MEXICO      

P: 15JAN2021 130359    32.8N  115.4W 2.5-4.6 AAAAA  So. California             

 

O: 13JAN2021 08:21:30  35.7N  117.5W ML=2.3  EMSC   SOUTHERN CALIFORNIA

O: 14JAN2021 00:33:53  35.9N  117.7W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P: 14JAN2021 130319    36.3N  117.8W 2.5-4.7 AAAAA  California/Nevada area     

 

O: 13JAN2021 20:53:31  36.5N  121.0W Md=2.0  EMSC   CENTRAL CALIFORNIA           

O: 13JAN2021 08:26:30  36.8N  121.5W ML=2.5  EMSC   CENTRAL CALIFORNIA           

P: 15JAN2021 130326    36.8N  121.3W 2.5-5.0 AAAAA  Central California         

 

O: 13JAN2021 09:05:00  37.9N  118.6W ml=2.3  EMSC   CENTRAL CALIFORNIA           

P: 15JAN2021 130320    38.0N  118.0W 2.5-4.6 AAAAA  California/Nevada area      

P: 16JAN2021 130322    38.0N  118.8W 2.5-4.6 BAAAA  California/Nevada area     

 

O: 13JAN2021 11:08:06  38.1N  117.9W ml=2.4  EMSC   NEVADA                       

P: 15JAN2021 130320    38.0N  118.0W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 14JAN2021 04:44:29  38.7N  119.4W ml=2.0  EMSC   NEVADA                       

P: 17JAN2021 130323    38.8N  119.6W 2.5-4.7 BAAAA  California/Nevada area     

 

O: 13JAN2021 10:00:09  40.2N  125.1W ML=2.7  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  9JAN2021 130080    40.5N  125.8W 2.5-4.8 BAAAA  Off Coast of No. Calif     

 

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

 

O: 13JAN2021 16:32:38  41.3N  125.8W ML=3.2  EMSC   OFF COAST OF NORTHERN CALIFORN

P: 16JAN2021 130409    40.5N  125.8W 2.5-4.8 BAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O: 14JAN2021 05:13:52  51.6N  174.0W mb=4.9  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 13JAN2021 130432    51.1N  174.6W 3.5-5.0 AAAAA  Andreanoff Isls, Aleutians 

 

O: 14JAN2021 06:32:55  54.6N  161.1W mb=3.7  EMSC   ALASKA PENINSULA             

P: 15JAN2021 130451    54.6N  161.7W 3.5-5.1 AAAAA  Unimak Islands, Aleutians  

 

O: 13JAN2021 21:59:37  61.1N  152.9W ML=3.5  EMSC   SOUTHERN ALASKA              

P: 15JAN2021 130459    61.3N  152.3W 3.2-5.3 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 13JAN2021 02:06:09  48.9N  129.7W MB=3.9  ECAN Port Alice, BC                 

P: 13JAN2021 130423    48.7N  129.0W 2.8-5.0 AAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 13JAN2021 12:08:25  31.7N  104.4W ML=2.8  EMSC   WESTERN TEXAS                

P: 12JAN2021 130355    32.5N  104.6W 2.0-4.1 AAAAA  SW U.S.A                   

 

 

O: 13JAN2021 08:27:39  44.2N  115.0W Ml=2.3  EMSC   SOUTHERN IDAHO

O: 13JAN2021 16:14:44  44.3N  115.1W Ml=2.3  EMSC   SOUTHERN IDAHO

O: 13JAN2021 08:27:39  44.2N  115.0W Ml=2.3  EMSC   SOUTHERN IDAHO               

P: 13JAN2021 130397    44.5N  115.2W 2.0-4.0 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 14JAN2021 05:05:21  39.7N   98.4W mb=2.8  EMSC   KANSAS                       

P: 12JAN2021 130371    39.0N   99.0W 2.0-4.3 AAAAA  Southern Plains            

 

O: 13JAN2021 09:15:04  45.9N   65.8W ML=2.1  EMSC   NEW BRUNSWICK, CANADA        

P: 12JAN2021 130386    46.0N   66.0W 2.0-4.1 AAAAA  E. of Maine                

 

O: 12JAN2021 18:30:44  79.2N   98.2W MB=3.5  ECAN Isachsen, NU                   

 

O: 12JAN2021 18:29:30  47.5N   70.5W MB=0.9  ECAN Charlevoix Seismic Zone        

P: 13JAN2021 130394    47.0N   70.0W 2.0-3.9 AAAAA  Maine                      

 

O: 12JAN2021 17:06:05  47.5N   74.3W MB=2.3  ECAN Saint-Michel-des-Saints, QC    

P: 16JAN2021 130404    47.0N   76.0W 2.0-3.9 BAAAA  New York State             

 

HAWAII

 

O: 14JAN2021 01:34:11  19.3N  155.2W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P: 12JAN2021 130276    19.2N  155.1W 3.0-4.5 AAAAA  Hawaii                     

 

NEW MOON BRINGS ELEVATED SEISMICITY

 

EARTHQUAKE SUMMARY FOR JANUARY 12, 2021

 

The strongest earthquake in the world today was an M 5.9 in New Guinea. NEIC reported it was felt with intensity VIII in Nabire, Papua New Guinea. This is the strongest earthquake within about 200 km of this epicenter since an M 6.1 about 200 km northeast of this and an M 6.3 event five days earlier on June 24 and June 19, 2019. An M 7.0 hit the area on July 27, 2015 and April 6, 2013.

This epicenter is at 103 degrees from southern California and appears to have promoted activity in that area in the past, usually with the strongest triggered events about a month later the the large quake in Papua. Forecast 130263 had expected today's event was likely in mid-January, 2021. This epicenter is near  the sixth node (60 degrees) from the earthquake in Mongolia of January 11, 2020 and may have been promoted by energy from that source.

 

O: 12JAN2021 18:17:33   3.2S  136.9E Mw=5.9  EMSC   PAPUA, INDONESIA             

P: 17JAN2021 130263     3.0S  135.0E 4.0-5.6 BABAA  West Irian, PNG            

 

A series of moderate earthquakes occurred today in southern Greece. NEIC reported these events were felt with intensity V in Rododafni, Ahaia and IV in Lidorikion, Aiyion, Aktaio, Patrai, Demenika,and Agrinon and II-III in Rion, Stirion and Karpenision, Greece. Several aftershocks of M 4.7 were also felt in the area. These events appear to have been promoted by tidal stresses associated with the new moon which arrived within minutes of the M 5.1 in Greece. That event occurred within about 15 minutes of local solar midnight an hour when tidal stresses are maximized. This was noted in this and previous summaries as:

 

"The new moon will arrive at 05:00 UT on January 13. Longitudes which are at sub-lunar conditions (local solar midnight) at this time are near 75 West and those at sub-solar conditions (local solar noon) are near 105 East. These include in the west, the west coast of South America and eastern North America and in the east western and central Indonesia, the Philippines and Taiwan among others. These areas are most likely to see tidally enhanced seismicity in the next week through January 17, 2021. Tidal enhancement is most likely near local solar noon and midnight. A strong global earthquake is likely in this period." (January 8-12, 2021)

 

Local solar midnight occurs at 22:30 UT. The last earthquake within about 150 km of today's epicenter with M>=5.1 occurred as an M 5.3 on February 15, 2016. Forecast 130345 had expected today's activity was likely within about 50 km to occur around January 14, 2021. Today's activity is located near the third node (120 degrees) from the Dodecanese Islands M 7.0 of October 30, 2020 and at the sixth node (60 degrees) from the earthquake in Mongolia of January 11, 2020 and may have have been promoted by energy from those source.

 

O: 12JAN2021 22:29:37  38.4N   22.0E mb=4.6  EMSC   GREECE

O: 12JAN2021 22:32:55  38.4N   22.1E ML=4.1  EMSC   GREECE

O: 12JAN2021 22:56:46  38.4N   22.1E mb=4.5  EMSC   GREECE

O: 12JAN2021 22:09:55  38.4N   22.1E Mw=5.1  EMSC   GREECE                       

P: 14JAN2021 130345    38.0N   22.0E 3.0-4.6 AAAAA  No. Greece                 

 

The strongest earthquake in the U.S. or Canada today was an M 4.3-4.5 off the coast of Northern California. NEIC reported it was felt along the coast with intensity II-III in Northern California at Ferndale, Eureka, Trinidad, Quincy. The last activity within about 100 km of today's event with M>=4.3 was an M 4.8 on March 22, 2020, an aftershock of an M 5.8 on March 9, 2020. Forecast 130409  had expected today's event within about 25 km was likely around January 16, 2021.

 

Exactly 20 years ago an M 5.6 hit this same area off the coast of Northern California. It was widely felt along the coast. For more details see the "HISTORY" section of this summary.

 

O: 13JAN2021 04:12:18  40.4N  124.8W ML=2.7  EMSC   OFFSHORE NORTHERN CALIFORNIA

O: 12JAN2021 18:52:23  40.6N  125.5W ML=3.0  EMSC   OFFSHORE NORTHERN CALIFORNIA

O: 12JAN2021 13:22:02  40.4N  125.5W Mw=4.4  EMSC   OFFSHORE NORTHERN CALIFORNIA 

O: 12JAN2021 13:22:02  40.4N  125.5W Mw=4.3  ANSS   OFFSHORE NORTHERN CALIFORNIA 

P: 16JAN2021 130409    40.5N  125.8W 2.5-4.8 BAAAA  Off Coast of No. Calif     

 

An aftershock of M 4.5 also occurred in zone of the M 7.6 in the Alaska Peninsula today. It was not reported felt in this remote area. This is the largest aftershock in this area since an M 4.7 on December 21, 2020.  Forecast 130430 expected today's event was likely around January 13, 2021.

 

O: 12JAN2021 15:48:34  54.4N  159.7W mb=4.5  EMSC   SOUTH OF ALASKA              

P: 13JAN2021 130430    54.8N  158.7W 3.5-4.9 AAAAA  Alaska Peninsula           

 

The earthquake of M 6.7 in Russia/Mongolia and the M 6.0 in Northern Japan late on January 11 and early on January 12, 2021 were closely associated with a strong GRB which was first recorded early on January 12 about an hour before the quake in Hokkaido, Japan. Effects from this and the associated geomagnetic storm may have helped promote these earthquakes at this time. The specs on the GRB are not yet available but will be published in this report when available. Current data on this GRB is found in the EXTERNAL FIELDS section of this report as:

 

"The last major Gamma Ray Burst (GRB) according to the online NASA Swift GRB Catalog was observed on January  12, 2021 at 01:37 UT with BAT Fluence n/a erg/sqcm. (MAGNITUDE: n/a), Associated earthquake: Russia/Mongolia M 6.7 1-11 21:32 UT, Northern Japan M 6.0 1-12 02:39 UT)" (January 12-13, 2021)

 

Aftershocks continued today in the Russia-Mongolia area today with the strongest with magnitudes in the mid-fours. Forecast 130447 had expected this activity within about 150 km of this epicenter was likely around January 15.

 

NEIC reported the earthquake of M 4.4 and M 4.7 in Mongolia were felt with intensity II-III in the area(s) of Mongolian in Ulaanbaatr and in  Irkutsk, Russia (IV).

 

O: 12JAN2021 21:55:32  51.3N  100.3E mb=4.4  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 16:31:16  51.4N  100.3E mb=4.5  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 13JAN2021 02:33:26  51.4N  100.3E mb=4.0  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 12:53:13  51.5N  100.5E mb=4.1  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 09:08:45  51.2N  100.4E mb=4.7  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 BABAA  So. Siberia                

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: 12JAN2021 12:16:54  36.4N   58.6E mb=4.3  EMSC   NORTHEASTERN IRAN            

P: 20JAN2021 130347    37.0N   59.0E 3.8-5.3 CAAAA  No. Iran                   

 

O: 12JAN2021 13:21:58  44.4N   80.5E mb=4.5  EMSC   KAZAKHSTAN-XINJIANG BORDER REG

P: 15JAN2021 130393    42.0N   81.0E 4.0-5.4 BCAAA  Kirgizstan/Xinjiang        

 

O: 12JAN2021 21:55:32  51.3N  100.3E mb=4.4  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 16:31:16  51.4N  100.3E mb=4.5  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 13JAN2021 02:33:26  51.4N  100.3E mb=4.0  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 12:53:13  51.5N  100.5E mb=4.1  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 09:08:45  51.2N  100.4E mb=4.7  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 BABAA  So. Siberia                

 

INDONESIA AND PHILIPPINES

 

O: 12JAN2021 11:51:31   2.2N  128.6E mb=4.6  EMSC   HALMAHERA, INDONESIA         

P: 17JAN2021 130233     2.0N  126.0E 4.0-5.5 BACAA  Mindanao, Philippines      

 

O: 12JAN2021 10:23:15   2.9S  141.9E mb=4.5  EMSC   NEAR N COAST OF NEW GUINEA, PN

P:  7JAN2021 129913     4.0S  143.0E 4.0-5.3 BBAAA  Papua New Guinea           

 

O: 12JAN2021 18:17:33   3.2S  136.9E Mw=5.9  EMSC   PAPUA, INDONESIA             

P: 17JAN2021 130263     3.0S  135.0E 4.0-5.6 BABAA  West Irian, PNG            

 

O: 12JAN2021 11:20:52   3.7S   99.7E ML=4.6  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P: 13JAN2021 130258     2.0S  101.0E 4.0-5.6 ABBAA  So. of Sumatera            

 

O: 12JAN2021 17:08:15   4.1S  142.9E mb=4.4  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P:  7JAN2021 129913     4.0S  143.0E 4.0-5.3 BAAAA  Papua New Guinea           

 

O: 12JAN2021 10:11:56   4.2N  125.4E mb=5.0  EMSC   KEPULAUAN SANGIHE, INDONESIA 

P:  9JAN2021 129891     5.0N  125.0E 4.0-5.3 BAAAA  Mindanao, Philippines      

 

O: 13JAN2021 06:18:23   4.3S  102.1E mb=4.6  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 13JAN2021 130258     2.0S  101.0E 4.0-5.6 ACAAA  So. of Sumatera            

 

O: 13JAN2021 02:12:48   5.0S  104.5E ML=4.6  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 20JAN2021 130258     6.0S  104.0E 4.0-5.5 CAAAA  So. of Sumatera            

 

O: 13JAN2021 01:03:30   9.3S  120.5E ML=4.2  EMSC   SUMBA REGION, INDONESIA      

P: 10JAN2021 129902     8.0S  121.0E 4.0-5.6 BBAAA  Flores Island area         

 

O: 12JAN2021 13:38:13  19.0N  120.3E mb=5.0  EMSC   LUZON, PHILIPPINES           

P: 13JAN2021 130280    19.0N  120.0E 3.5-5.0 AAAAA  Luzon, Philippines          

 

O: 13JAN2021 01:39:29  19.4N  145.4E mb=4.7  EMSC   MAUG ISLANDS REG, N. MARIANA I

P: 14JAN2021 130287    19.0N  146.0E 4.0-5.5 AAAAA  No. Marianas               

 

 

CENTRAL AND SOUTH AMERICA

 

O: 12JAN2021 15:30:18  14.6N   93.6W mb=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 14JAN2021 130269    14.0N   94.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O: 12JAN2021 13:33:18   0.2S   80.5W ML=4.1  EMSC   NEAR COAST OF ECUADOR        

P: 15JAN2021 130243     1.0S   81.0W 4.0-5.7 BAAAA  Ecuador                     

 

O: 12JAN2021 19:33:18  15.9N   98.4W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 10JAN2021 129949    15.0N   96.0W 3.5-5.4 AACAA  Oaxaca, Mexico             

 

O: 12JAN2021 20:52:03  16.0N   95.3W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO       

P: 12JAN2021 130270    15.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 13JAN2021 05:10:00   1.1N   79.6W ML=4.0  EMSC   NEAR COAST OF ECUADOR        

O: 13JAN2021 01:11:23   2.5N   79.9W mb=4.7  EMSC   SOUTH OF PANAMA              

P: 15JAN2021 130243     1.0S   81.0W 4.0-5.7 ACAAA  Ecuador                    

 

O: 12JAN2021 18:22:05  17.2N   93.2W ML=4.0  EMSC   CHIAPAS, MEXICO              

P: 15JAN2021 130270    17.0N   95.0W 3.5-5.3 BABAA  Chiapas, Mexico            

 

O: 12JAN2021 18:24:17  17.2N  100.6W ML=4.1  EMSC   GUERRERO, MEXICO             

P: 12JAN2021 130283    17.0N  101.0W 3.5-5.3 AAAAA  Michoacan, Mexico          

 

O: 12JAN2021 22:57:10  18.6N   65.3W ML=3.7  EMSC   PUERTO RICO REGION           

P: 12JAN2021 130278    18.0N   65.0W 3.0-4.9 AAAAA  Leeward Islands            

 

NEIC reported this earthquake of M 3.8 northeast of Puerto Rico  was felt with intensity II-III in the area(s)  northeast of Puerto Rico in Fajardo and Rio Grande and San Juan.

 

O: 12JAN2021 11:04:35  21.7S   68.7W mb=4.9  EMSC   ANTOFAGASTA, CHILE

O: 12JAN2021 07:55:11  20.9S   68.8W mb=4.1  EMSC   ANTOFAGASTA, CHILE           

P: 13JAN2021 130494    22.0S   68.0W 4.0-5.4 ABAAA  Argentina                  

P: 14JAN2021 130504    20.0S   70.0W 4.0-5.6 AAAAA  So. Peru/Bolivia           

 

O: 12JAN2021 11:28:05  27.9N  112.0W ML=3.6  EMSC   GULF OF CALIFORNIA           

O: 12JAN2021 11:19:14  27.9N  112.0W ML=4.1  EMSC   GULF OF CALIFORNIA

P: 19JAN2021 130302    28.0N  112.0W 3.5-4.9 CAAAA  Gulf of California         

 

AFRICA AND EUROPE

 

O: 13JAN2021 01:07:04  12.8S   45.5E ML=3.7  EMSC   MAYOTTE REGION               

P: 14JAN2021 130478    13.0S   44.0E 3.0-4.4 AABAA  Madagascar area            

 

O: 12JAN2021 22:29:37  38.4N   22.0E mb=4.6  EMSC   GREECE

O: 12JAN2021 22:32:55  38.4N   22.1E ML=4.1  EMSC   GREECE

O: 12JAN2021 22:56:46  38.4N   22.1E mb=4.5  EMSC   GREECE

O: 12JAN2021 22:09:55  38.4N   22.1E Mw=5.1  EMSC   GREECE                       

P: 14JAN2021 130345    38.0N   22.0E 3.0-4.6 AAAAA  No. Greece                 

 

O: 12JAN2021 16:12:13  38.8N   29.4W ML=3.7  EMSC   AZORES ISLANDS, PORTUGAL

O: 12JAN2021 13:35:53  38.8N   29.4W ML=3.6  EMSC   AZORES ISLANDS, PORTUGAL     

P:  9JAN2021 130075    40.0N   30.0W 4.0-5.3 BBAAA  No. Mid-Atlantic Ridge     

P: 12JAN2021 130348    38.0N   32.0W 4.0-6.1 AABAA  No. Mid-Atlantic Ridge     

 

O: 12JAN2021 07:26:33  40.1N   19.8E ML=4.0  EMSC   ALBANIA                      

P:  9JAN2021 130011    39.0N   20.0E 3.0-4.5 BBAAA  No. Greece                  

 

SOUTHWEST PACIFIC

 

O: 13JAN2021 03:51:18  15.1S  178.2W mb=4.4  EMSC   FIJI REGION                  

P: 14JAN2021 130481    14.0S  177.0W 4.0-5.5 ABAAA  Samoa Islands              

 

O: 12JAN2021 13:46:45  16.3S  177.2W mb=4.2  EMSC   FIJI REGION                  

P: 16JAN2021 130488    17.0S  178.0W 4.0-5.4 BAAAA  Tonga Islands              

 

O: 12JAN2021 21:02:22  20.8S  178.4W mb=4.5  EMSC   FIJI REGION                  

P: 15JAN2021 130506    23.0S  180.0W 4.0-5.6 BCBAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 12JAN2021 21:05:05  34.8S  177.8E ML=3.6  EMSC   NORTH OF NEW ZEALAND         

P: 14JAN2021 130511    36.0S  180.0E 3.5-4.9 ABBAA  E. of North Islands N.Z.   

 

O: 12JAN2021 10:21:18  37.1S  179.2E ML=4.1  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 12JAN2021 130512    38.0S  179.0E 3.0-4.7 AAAAA  North Island, N.Z.         

 

O: 12JAN2021 18:50:38  38.4S  177.9E ML=3.8  EMSC   NORTH ISLAND OF NEW ZEALAND  

P: 12JAN2021 130512    38.0S  179.0E 3.0-4.7 AAAAA  North Island, N.Z.         

 

O: 12JAN2021 10:54:02  39.5S  174.9E ML=3.7  EMSC   NORTH ISLAND OF NEW ZEALAND  

P: 12JAN2021 130517    40.0S  176.0E 3.0-4.7 AAAAA  North Island, N.Z.         

 

O: 12JAN2021 10:06:36  63.2S  171.9E mb=5.3  EMSC   BALLENY ISLANDS REGION       

 

JAPAN AND KURIL ISLANDS

 

O: 12JAN2021 08:42:47  43.6N  140.0E mb=4.1  EMSC   HOKKAIDO, JAPAN REGION       

P:  9JAN2021 130059    43.0N  142.0E 3.5-5.8 BABAA  Hokkaido, Japan            

 

O: 13JAN2021 04:45:30  36.8N  141.8E ML=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 12JAN2021 130351    37.0N  142.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

O: 13JAN2021 04:31:49  50.9N  158.1E mb=4.0  EMSC   EAST OF KURIL ISLANDS        

P: 16JAN2021 130440    52.0N  159.0E 4.0-5.9 BBAAA  Kamchatka                  

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 13JAN2021 03:56:20  32.8N  115.5W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 12JAN2021 09:23:26  32.7N  115.8W ML=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 15JAN2021 130359    32.8N  115.4W 2.5-4.6 BAAAA  So. California              

 

NEIC reported this earthquake of M 2.5 in Imperial, California was felt with intensity IV in the area(s) of Imperial, California.

 

O: 12JAN2021 20:02:25  34.3N  118.6W Ml=2.2  EMSC   GREATER LOS ANGELES AREA, CALI

P: 16JAN2021 130363    34.9N  119.0W 2.5-4.5 BAAAA  So. California             

 

O: 12JAN2021 16:36:01  36.8N  116.0W ml=2.2  EMSC   NEVADA                       

P: 18JAN2021 130321    37.8N  115.8W 2.5-4.4 CAAAA  California/Nevada area     

 

O: 13JAN2021 01:26:30  37.9N  122.3W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O: 13JAN2021 02:01:32  38.4N  122.2W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 12JAN2021 130327    37.9N  122.0W 2.5-4.9 AAAAA  Central California         

 

O: 12JAN2021 21:02:37  39.0N  123.1W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 12JAN2021 130329    39.0N  123.1W 2.5-4.6 AAAAA  Central California         

 

O: 12JAN2021 16:31:45  38.2N  117.9W ml=2.2  EMSC   NEVADA

O: 12JAN2021 10:08:30  38.2N  117.8W ml=2.2  EMSC   NEVADA                       

P: 15JAN2021 130320    38.0N  118.0W 2.5-4.6 BAAAA  California/Nevada area     

 

O: 13JAN2021 04:12:18  40.4N  124.8W ML=2.7  EMSC   OFFSHORE NORTHERN CALIFORNIA

O: 12JAN2021 18:52:23  40.6N  125.5W ML=3.0  EMSC   OFFSHORE NORTHERN CALIFORNIA

O: 12JAN2021 13:22:02  40.4N  125.5W Mw=4.4  EMSC   OFFSHORE NORTHERN CALIFORNIA 

O: 12JAN2021 13:22:02  40.4N  125.5W Mw=4.5  ANSS   OFFSHORE NORTHERN CALIFORNIA 

P: 16JAN2021 130409    40.5N  125.8W 2.5-4.8 BAAAA  Off Coast of No. Calif     

 

ALASKA

 

O: 12JAN2021 14:13:07  54.4N  159.7W mb=3.9  EMSC   SOUTH OF ALASKA

O: 12JAN2021 15:48:34  54.4N  159.7W mb=4.5  EMSC   SOUTH OF ALASKA              

P: 13JAN2021 130430    54.8N  158.7W 3.5-4.9 AAAAA  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: 12JAN2021 15:09:17  31.7N  104.4W ML=2.5  EMSC   WESTERN TEXAS                

P: 12JAN2021 130355    32.5N  104.6W 2.0-4.1 AAAAA  SW U.S.A                    

 

O: 12JAN2021 07:33:46  41.6N  112.3W Ml=2.0  EMSC   UTAH

O: 12JAN2021 07:21:43  41.6N  112.4W ML=3.0  EMSC   UTAH                         

P: 15JAN2021 130427    42.0N  111.5W 2.0-3.9 BAAAA  Yellowstone/Wyoming        

 

NEIC reported this earthquake of M 2.9 in Utah was felt with intensity II-III in the area(s) of Utah at Tremonton, Ogden, Logan and Woods Cross.

 

EASTERN U.S./CANADA

 

O: 12JAN2021 09:34:12  35.1N   95.4W ML=2.2  EMSC   OKLAHOMA

O: 12JAN2021 09:18:56  35.1N   95.4W ML=2.1  EMSC   OKLAHOMA                     

P:  9JAN2021 130042    35.0N   96.0W 2.0-4.0 BAAAA  Southern Plains            

 

O: 12JAN2021 08:33:09  47.0N   66.6W MB=1.7  ECAN Plaster Rock, NB               

P: 12JAN2021 130386    46.0N   66.0W 2.0-4.1 AAAAA  E. of Maine                

 

O: 12JAN2021 01:08:49  45.6N   81.0W MB=1.7  ECAN Wikwemikong, ON                

O: 11JAN2021 22:12:23  46.1N   80.5W MB=2.3  ECAN Sturgeon Falls, ON. Felt       

P: 11JAN2021 130413    46.0N   81.0W 2.0-4.1 AAAAA  Ohio/Lake Erie             

 

O: 11JAN2021 19:16:47  46.9N   77.2W MB=2.8  ECAN Deep River, ON                 

P:  9JAN2021 130074    47.0N   76.0W 2.0-4.1 AAAAA  New York State             

 

O: 11JAN2021 02:08:03  60.3N   74.3W MB=2.4  ECAN Purtuniq, QC                    

P: 10JAN2021 130115    59.0N   76.0W 2.0-3.8 ABAAA  Quebec, Canada             

 

HAWAII

 

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

 

STRONG EARTHQUAKES SHAKE MONGOLIA/SIBERIA AND HOKKAIDO, JAPAN

 

EARTHQUAKE SUMMARY FOR JANUARY 11, 2021

 

Strong earthquakes hit the regions of Mongolia and Siberia (M 6.7) and northern Hokkaido, Japan (M 6.0) today. The earthquake in Hokkaido was reported by NEIC with intensity III in Hokodate, Hokkaido and Misawa, Aomori, Japan.

The last earthquake of M>=5.9 within about 200 km of today's event in the eastern Sea of Japan was an M 7.7 on July 12, 1993.  Forecast 130059 had expected today's event about 200 km to the east of today's epicenter was likely around January 9, 2021. This earthquake may have been promoted by tidal stresses associated with the new moon of January 13. It occurred within about 15 minutes of local solar noon, a time when tidal stresses are maximized as noted in this and previous issues of this summary:

 

"The new moon will arrive at 05:00 UT on January 13. Longitudes which are at sub-lunar conditions (local solar midnight) at this time are near 75 West and those at sub-solar conditions (local solar noon) are near 105 East. These include in the west, the west coast of South America and eastern North America and in the east western and central Indonesia, the Philippines and Taiwan among others. These areas are most likely to see tidally enhanced seismicity in the next week through January 17, 2021. Tidal enhancement is most likely near local solar noon and midnight. A strong global earthquake is likely in this period." (January 8-11, 2021)

 

O: 12JAN2021 02:39:41  43.7N  140.1E Mw=6.0  EMSC   HOKKAIDO, JAPAN REGION       

O: 12JAN2021 02:39:42  43.7N  140.0E mw=6.0  ANSS   Eastern Sea of Japan        

P:  9JAN2021 130059    43.0N  142.0E 3.5-5.8 BABAA  Hokkaido, Japan            

 

The M 6.7 in Mongolia was widely felt in that area and in Siberia, Russia. The mainshock of M 6.7 was reported with minor damage in Moron, Hovsgol, Mongolia and IV in Shelekhov, Irkutsk, Erzin, Gusinoozyorsk, Burjatya, Russia and in Mongolia at Suhbaatar, Erdenet, and III in Usolye-Sibirskoye, Cheremkho, Angarsk, Irkutsk, Russia. Aftershocks of M 4.8 and M 5.0 were felt in Irkutsk, Russia (IV) and in Zuunharaa, Selenge, Mongolia (V). The mainshock occurred as the strongest geomagnetic storm in two months reached maximum at 21:00 UT as noted in this and previous issues of this summary as:

 

"The geomagnetic field saw active conditions today. The AP level was 14.  High latitude geomagnetic field also saw minor storm conditions with AP 20. This is the strongest disturbance in the geomagnetic field since in more than a month - since AP index reached  27 on November 27, 2020. Geomagnetic storms such as this can bring increases seismicity at high latitudes and near the geomagnetic equator over the next several days." (January 11, 2020)

 

and

 

"The maximum disturbance in the geomagnetic field today occurred with KP 4 at 21:00, January  11, 2021." (January 11, 2021)

 

Today's event of M 6.7 is the strongest in the world in two weeks - since an M 6.7 in Los Lagos, Chile on December 27, 2020. The only earthquake within about 300 km of this epicenter of equal or larger magnitude in this region near the Russia-Mongolia border was an M 6.7 about 300 km to the west on February 26, 2012 - the only such event in this region in the past 30 years. This epicenter is at the seventh node (52 degrees) from both the Dodecanese Islands of October 30, 2020 and from the M 7.6 in the Alaska Peninsula of October 19, 2020. It is also located in the antipodal area of the M 6.7 in Los Lagos, Chile of December 27, 2020. It was probably promoted by energy from these sources. One of the strongest earthquakes in this area in recent times occurred as an M 7.5 on January 12, 1862 exactly 159 years ago. This is detailed in the "HISTORY" section of this report.

 

O: 11JAN2021 22:22:44  51.2N  100.3E mb=4.5  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 22:44:24  51.2N  100.3E mb=4.4  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 22:02:56  51.3N  100.4E mb=5.0  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 00:36:10  51.3N  100.3E mb=4.8  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 21:53:00  51.4N  100.3E mb=5.2  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 23:02:23  51.4N  100.4E mb=5.0  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 00:34:05  51.4N  100.1E mb=4.5  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 00:27:11  51.5N  100.4E mb=4.0  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 00:31:40  51.5N  100.5E mb=4.2  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 01:49:53  51.5N  100.2E mb=4.7  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 23:13:35  51.6N  100.3E mb=4.6  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 01:10:34  52.0N   99.9E mb=4.4  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 21:32:58  51.2N  100.5E Mw=6.7  EMSC   RUSSIA-MONGOLIA BORDER REGION

P:  8JAN2021 130118    51.0N   98.0E 3.0-4.4 BABAA  So. Siberia                

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 BABAA  So. Siberia                

 

An M 5.4 was also felt in the Azores Islands of Portugal today. NEIC reported it was felt with intensity VI in Horta, Azores. This event may have been promoted by strong tidal stresses associated with the upcoming new moon of January 13. It occurred near local solar noon, an hour when such stresses are maximized. The M 5.4 is the strongest earthquake in the Azores within about 300 km of this epicenter since an M 5.5 on August 30, 2017, the strongest in the region since an M 6.2 on July 9, 1998 and the second largest in the past 30 years. Forecast 130075 and 130348 had expected today's activity within about 150 km  was likely between January 9-12 with magnitude up to M 6.1.

 

O: 11JAN2021 19:05:05  38.8N   29.4W ML=3.4  EMSC   AZORES ISLANDS, PORTUGAL

O: 11JAN2021 21:48:51  38.8N   29.4W ML=3.4  EMSC   AZORES ISLANDS, PORTUGAL

O: 12JAN2021 04:06:02  38.9N   29.5W ML=3.8  EMSC   AZORES ISLANDS, PORTUGAL

O: 11JAN2021 12:47:01  38.8N   29.4W Mw=5.4  EMSC   AZORES ISLANDS, PORTUGAL     

P:  9JAN2021 130075    40.0N   30.0W 4.0-5.3 ABAAA  No. Mid-Atlantic Ridge     

P: 12JAN2021 130348    38.0N   32.0W 4.0-6.1 AABAA  No. Mid-Atlantic Ridge     

 

The strongest earthquake in the U.S. or Canada today was an M 5.1, followed by an M 4.2 aftershock in the Unimak Island area of Alaska west of the Alaska Peninsula. The only earthquake in the Unimak Island area of equal or greater magnitude than M 5.1 occurred on August 13, 2020 with M 5.6. Forecast 130439 had expected today's event was likely around January 12.

 

O: 11JAN2021 07:19:04  53.8N  164.1W Mw=5.1  EMSC   UNIMAK ISLAND REGION, ALASKA 

O: 11JAN2021 10:44:56  53.8N  164.0W mb=4.2  EMSC   UNIMAK ISLAND REGION, ALASKA

P: 12JAN2021 130439    53.5N  165.8W 3.5-5.1 AAAAA  Fox Islands, Aleutians     

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 12JAN2021 04:03:30  29.9N   80.7E ML=4.2  EMSC   NEPAL-INDIA BORDER REGION    

P:  9JAN2021 130049    30.0N   80.0E 3.8-5.3 BAAAA  Xizang                      

 

O: 11JAN2021 14:02:02  33.3N   75.7E mb=5.1  EMSC   EASTERN KASHMIR              

O: 11JAN2021 13:59:13  33.5N   75.8E mb=4.1  EMSC   EASTERN KASHMIR              

P: 16JAN2021 130353    34.0N   74.0E 3.8-5.2 BABAA  Pakistan                   

 

NEIC reported this earthquake of M 5.1 in Jammu and Kashmir, India was felt with intensity II-III in the area(s) of Jammu and Kashmir, India with VI Kishtwar and IV in Qazigund, Shupiyuan, Srinagar, and in Jalandhar, Punjab. Intensity II-III was felt in Dharamshala, Manali, Kulu, Himachal Pradesh and Amrtsar  and Kapurthala, Punjab.

 

O: 12JAN2021 04:47:17  36.6N   71.0E mb=4.4  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 12JAN2021 130336    36.0N   72.0E 3.8-5.2 AAAAA  Hindu Kush/Pakistan        

 

O: 11JAN2021 19:27:49  35.8N   60.2E mb=4.4  EMSC   NORTHEASTERN IRAN            

P: 20JAN2021 130347    37.0N   59.0E 3.8-5.3 CBAAA  No. Iran                   

 

NEIC reported this earthquake of M 4.4 in Iran was felt with intensity IV in the area(s) of Meshed Khorasan-e Razavi, Iran.

 

O: 11JAN2021 21:32:58  51.2N  100.5E Mw=6.7  EMSC   RUSSIA-MONGOLIA BORDER REGION

P:  8JAN2021 130118    51.0N   98.0E 3.0-4.4 BABAA  So. Siberia                

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 BABAA  So. Siberia                 

 

O: 11JAN2021 12:56:42  52.7N  158.9E mb=4.6  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 16JAN2021 130440    52.0N  159.0E 4.0-5.9 BAAAA  Kamchatka                  

 

 

O: 11JAN2021 20:58:45  71.8N  127.2E mb=4.5  EMSC   NORTHWESTERN SAKHA, RUSSIA   

 

O: 11JAN2021 22:22:44  51.2N  100.3E mb=4.5  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 22:44:24  51.2N  100.3E mb=4.4  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 22:02:56  51.3N  100.4E mb=5.0  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 00:36:10  51.3N  100.3E mb=4.8  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 21:53:00  51.4N  100.3E mb=5.2  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 23:02:23  51.4N  100.4E mb=5.0  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 00:34:05  51.4N  100.1E mb=4.5  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 00:27:11  51.5N  100.4E mb=4.0  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 00:31:40  51.5N  100.5E mb=4.2  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 01:49:53  51.5N  100.2E mb=4.7  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 23:13:35  51.6N  100.3E mb=4.6  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 12JAN2021 01:10:34  52.0N   99.9E mb=4.4  EMSC   RUSSIA-MONGOLIA BORDER REGION

O: 11JAN2021 21:32:58  51.2N  100.5E Mw=6.7  EMSC   RUSSIA-MONGOLIA BORDER REGION

P:  8JAN2021 130118    51.0N   98.0E 3.0-4.4 BABAA  So. Siberia                

P: 15JAN2021 130447    51.0N   98.0E 3.0-4.4 BABAA  So. Siberia                

 

 

INDONESIA AND PHILIPPINES

 

O: 11JAN2021 18:08:37   1.5N  127.3E mb=4.4  EMSC   HALMAHERA, INDONESIA         

P: 17JAN2021 130233     2.0N  126.0E 4.0-5.5 CABAA  Mindanao, Philippines      

 

O: 11JAN2021 22:14:15   3.1S  141.1E ML=4.2  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 15JAN2021 130254     3.0S  140.0E 4.0-5.6 BAAAA  Papua New Guinea           

 

O: 12JAN2021 03:46:38   4.1S  127.7E mb=4.6  EMSC   BANDA SEA                    

P: 14JAN2021 130242     4.0S  128.0E 4.0-5.6 AAAAA  Ceram area                 

 

O: 11JAN2021 12:40:45   5.2S  151.5E mb=4.5  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 12JAN2021 130248     5.0S  151.0E 4.0-5.6 AAAAA  New Ireland                

 

O: 11JAN2021 14:53:00   5.3N  127.1E ML=4.5  EMSC   PHILIPPINE ISLANDS REGION    

P: 10JAN2021 129891     5.0N  127.0E 4.0-5.3 AAAAA  Halmahera                  

 

O: 11JAN2021 17:10:02   9.5S  127.4E ML=4.1  EMSC   TIMOR SEA                    

P: 17JAN2021 130279    10.0N  127.0E 3.5-5.1 CAAAA  Luzon, Philippines         

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 11JAN2021 23:32:30   8.0N   82.8W ML=4.0  EMSC   SOUTH OF PANAMA              

P: 15JAN2021 130230     8.0N   82.0W 3.5-5.3 BAAAA  Costa Rica                 

 

O: 11JAN2021 08:38:46  13.8N   92.4W ML=4.2  EMSC   OFFSHORE GUATEMALA

O: 12JAN2021 06:10:57  14.8N   93.6W Mw=4.9  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 11JAN2021 08:36:05  14.9N   92.2W ML=4.3  EMSC   CHIAPAS, MEXICO

O: 11JAN2021 09:10:19  13.6N   92.3W ML=4.0  EMSC   OFFSHORE GUATEMALA           

P: 10JAN2021 129933    15.0N   92.0W 3.5-5.3 ABAAA  Guatemala                  

 

O: 11JAN2021 11:20:24  15.2N   92.8W ML=4.1  EMSC   CHIAPAS, MEXICO              

P: 13JAN2021 130274    15.0N   92.0W 3.5-5.4 AAAAA  Guatemala                  

 

O: 11JAN2021 21:54:06  16.0N   95.6W ML=4.0  EMSC   OAXACA, MEXICO

O: 11JAN2021 20:11:28  16.1N   95.3W ML=4.1  EMSC   OAXACA, MEXICO               

P: 15JAN2021 130270    17.0N   95.0W 3.5-5.3 BAAAA  Chiapas, Mexico             

 

O: 12JAN2021 04:26:14  16.1N   97.5W ML=4.1  EMSC   OAXACA, MEXICO               

P: 10JAN2021 129951    18.0N   97.0W 3.5-5.3 ABAAA  Oaxaca, Mexico             

 

O: 11JAN2021 17:58:39  17.2N   94.7W ML=4.0  EMSC   VERACRUZ, MEXICO

O: 11JAN2021 19:33:53  17.1N   94.6W ML=4.0  EMSC   OAXACA, MEXICO               

O: 11JAN2021 14:38:53  17.8N   93.1W ML=4.0  EMSC   CHIAPAS, MEXICO              

P:  9JAN2021 129929    17.0N   95.0W 3.5-5.3 AABAA  Chiapas, Mexico            

 

O: 12JAN2021 00:28:57  17.9N   66.8W Md=3.1  EMSC   PUERTO RICO REGION

O: 11JAN2021 12:34:01  18.0N   66.5W Md=3.1  EMSC   PUERTO RICO

O: 11JAN2021 14:42:45  17.9N   66.8W Md=3.0  EMSC   PUERTO RICO REGION           

P: 14JAN2021 130291    18.0N   67.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 12JAN2021 00:13:15  18.1N   70.5W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P: 16JAN2021 130293    19.0N   71.0W 3.4-5.1 BAAAA  Puerto Rico                

 

O: 11JAN2021 23:22:04  18.8N   67.7W Md=3.1  EMSC   PUERTO RICO REGION           

P: 12JAN2021 130292    18.0N   68.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 11JAN2021 12:55:03  18.6N   69.8W ML=3.1  EMSC   DOMINICAN REPUBLIC

O: 11JAN2021 09:43:29  19.1N   71.1W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 10JAN2021 129959    20.0N   71.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

O: 11JAN2021 10:42:46  27.3N  111.7W ML=3.7  EMSC   GULF OF CALIFORNIA           

P: 19JAN2021 130302    28.0N  112.0W 3.5-4.9 CAAAA  Gulf of California         

 

AFRICA AND EUROPE

 

O: 12JAN2021 06:30:35  37.7N   29.2E Mw=4.0  EMSC   WESTERN TURKEY               

P: 11JAN2021 130373    38.0N   29.0E 3.5-5.4 AAAAA  Turkey                     

 

O: 11JAN2021 19:05:05  38.8N   29.4W ML=3.4  EMSC   AZORES ISLANDS, PORTUGAL

O: 11JAN2021 21:48:51  38.8N   29.4W ML=3.4  EMSC   AZORES ISLANDS, PORTUGAL

O: 12JAN2021 04:06:02  38.9N   29.5W ML=3.8  EMSC   AZORES ISLANDS, PORTUGAL

O: 11JAN2021 12:47:01  38.8N   29.4W Mw=5.4  EMSC   AZORES ISLANDS, PORTUGAL     

P:  9JAN2021 130075    40.0N   30.0W 4.0-5.3 ABAAA  No. Mid-Atlantic Ridge     

P: 12JAN2021 130348    38.0N   32.0W 4.0-6.1 AABAA  No. Mid-Atlantic Ridge     

 

SOUTHWEST PACIFIC

 

O: 11JAN2021 21:30:38  15.6S  168.0E mb=4.7  EMSC   VANUATU                      

P: 12JAN2021 130491    16.0S  168.0E 4.0-5.5 AAAAA  Vanuatu Islands            

 

O: 11JAN2021 17:01:43  17.1S  174.2W mb=4.6  EMSC   TONGA                        

P: 13JAN2021 130489    18.0S  174.0W 4.0-5.6 AAAAA  Tonga Islands              

 

O: 11JAN2021 10:51:15  20.5S  177.6W mb=4.8  EMSC   FIJI REGION                  

P: 13JAN2021 130505    21.0S  174.0W 4.0-5.8 AACAA  Tonga Islands              

 

O: 11JAN2021 22:36:07  21.8S  170.9E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 13JAN2021 130497    22.0S  169.0E 4.0-5.4 AABAA  Loyalty Islands            

 

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

 

OCEAN RIDGES

 

O: 11JAN2021 19:44:37  58.1S    9.4W Mw=5.4  EMSC   EAST OF SOUTH SANDWICH ISLANDS

 

 

O: 11JAN2021 19:05:05  38.8N   29.4W ML=3.4  EMSC   AZORES ISLANDS, PORTUGAL

O: 11JAN2021 21:48:51  38.8N   29.4W ML=3.4  EMSC   AZORES ISLANDS, PORTUGAL

O: 12JAN2021 04:06:02  38.9N   29.5W ML=3.8  EMSC   AZORES ISLANDS, PORTUGAL

O: 11JAN2021 12:47:01  38.8N   29.4W Mw=5.4  EMSC   AZORES ISLANDS, PORTUGAL     

P:  9JAN2021 130075    40.0N   30.0W 4.0-5.3 ABAAA  No. Mid-Atlantic Ridge     

P: 12JAN2021 130348    38.0N   32.0W 4.0-6.1 AABAA  No. Mid-Atlantic Ridge     

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 11JAN2021 11:34:26  35.7S  179.8E ML=3.6  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 14JAN2021 130511    36.0S  180.0E 3.5-4.9 BAAAA  E. of North Islands N.Z.   

 

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: 12JAN2021 02:39:41  43.7N  140.1E Mw=6.0  EMSC   HOKKAIDO, JAPAN REGION       

O: 12JAN2021 02:39:42  43.7N  140.0E mw=6.0  ANSS   Eastern Sea of Japan        

P:  9JAN2021 130059    43.0N  142.0E 3.5-5.8 BABAA  Hokkaido, Japan            

 

O: 12JAN2021 03:56:02  33.3N  138.2E mb=4.1  EMSC   IZU ISLANDS, JAPAN REGION    

P:  9JAN2021 129995    33.0N  138.0E 3.5-4.8 BAAAA  Central/So. Honshu Japan   

P: 13JAN2021 130331    34.0N  139.0E 3.5-5.1 AAAAA  Central/So. Honshu Japan   

 

O: 11JAN2021 23:30:22  44.3N  149.5E mb=4.3  EMSC   KURIL ISLANDS                

P: 15JAN2021 130389    44.0N  149.0E 3.5-5.4 BAAAA  Hokkaido, Japan            

 

O: 11JAN2021 11:23:40  47.2N  152.6E mb=4.3  EMSC   KURIL ISLANDS                

P: 10JAN2021 130090    48.0N  154.0E 3.5-5.6 AAAAA  So. Kurils                 

P: 12JAN2021 130421    48.0N  154.0E 3.5-5.5 AAAAA  So. Kurils                 

 

O: 12JAN2021 00:55:15  49.3N  158.6E mb=4.0  EMSC   EAST OF KURIL ISLANDS        

P:  9JAN2021 130072    49.0N  156.0E 3.5-5.4 BABAA  NE Pacific                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 11JAN2021 11:59:54  35.7N  117.5W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

O: 11JAN2021 22:12:15  35.7N  117.5W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

O: 11JAN2021 22:16:22  36.0N  117.8W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P: 14JAN2021 130319    36.3N  117.8W 2.5-4.7 BAAAA  California/Nevada area     

 

O: 11JAN2021 10:10:27  38.1N  118.0W ml=2.3  EMSC   NEVADA                       

O: 11JAN2021 22:00:42  38.2N  118.1W ml=2.2  EMSC   NEVADA

P: 10JAN2021 129982    38.2N  118.1W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 12JAN2021 03:25:03  40.3N  124.7W ML=3.1  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 18JAN2021 130409    40.3N  124.7W 2.5-4.6 CAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.5 in Northern California was felt with intensity II-III in the area(s) of Northern California in Fortuna, Whitethorn, Arcata and McKinleyville.

 

 

ALASKA

 

O: 11JAN2021 07:19:04  53.8N  164.1W Mw=5.1  EMSC   UNIMAK ISLAND REGION, ALASKA 

O: 11JAN2021 10:44:56  53.8N  164.0W mb=4.2  EMSC   UNIMAK ISLAND REGION, ALASKA

P: 12JAN2021 130439    53.5N  165.8W 3.5-5.1 AAAAA  Fox Islands, Aleutians     

 

O: 11JAN2021 21:17:08  55.4N  158.0W mb=4.8  EMSC   ALASKA PENINSULA             

P: 13JAN2021 130430    54.8N  158.7W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O: 11JAN2021 18:21:12  56.9N  148.1W ML=3.0  EMSC   GULF OF ALASKA               

P: 15JAN2021 130450    55.0N  149.0W 3.0-4.9 BBAAA  South of  Alaska           

 

O: 11JAN2021 19:31:19  59.8N  153.7W mb=4.2  EMSC   SOUTHERN ALASKA

O: 11JAN2021 14:34:23  59.4N  152.7W mb=3.7  EMSC   SOUTHERN ALASKA              

P: 15JAN2021 130457    60.5N  151.5W 3.2-4.9 BAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.4 in  Anchor Point, Alaska was felt with intensity II-III in the area(s) of Anchor Point, Alaska.

 

O: 11JAN2021 11:14:16  63.8N  147.6W ml=3.0  EMSC   CENTRAL ALASKA               

P:  9JAN2021 130130    63.0N  144.6W 3.2-5.0 AABAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 10JAN2021 23:20:36  53.4N  133.1W MB=3.0  ECAN Village of Queen Charlotte, BC 

P:  9JAN2021 130105    52.0N  131.0W 3.0-5.3 ABBAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 11JAN2021 09:01:28  44.5N  115.2W Ml=3.0  EMSC   SOUTHERN IDAHO               

P: 13JAN2021 130397    44.5N  115.2W 2.0-4.0 AAAAA  Montana/Idaho               

 

EASTERN U.S./CANADA

 

O: 11JAN2021 20:23:48  37.3N   97.5W mb=2.6  EMSC   KANSAS                       

P: 12JAN2021 130371    39.0N   99.0W 2.0-4.3 ABAAA  Southern Plains            

 

NEIC reported this earthquake of M 2.6 in Kansas was felt with intensity II-III in the area(s) of Kansas at Mayfield, Wellington.

 

O: 11JAN2021 02:08:03  60.3N   74.3W MB=2.4  ECAN Purtuniq, QC                   

P: 10JAN2021 130115    59.0N   76.0W 2.0-3.8 ABAAA  Quebec, Canada             

 

O: 10JAN2021 12:33:20  47.4N   70.2W MB=0.6  ECAN Charlevoix Seismic Zone        

P: 13JAN2021 130394    47.0N   70.0W 2.0-3.9 BAAAA  Maine                      

 

O: 10JAN2021 02:26:04  71.8N   74.9W MB=2.1  ECAN Pond Inlet, NU                 

P:  4JAN2021 130139    71.0N   75.0W 2.5-3.9 CAAAA  Baffin/Davis Strait Canada 

P: 20JAN2021 130470    71.0N   75.0W 2.5-4.0 CAAAA  Baffin/Davis Strait Canada 

 

O: 10JAN2021 00:29:29  46.0N   81.5W MB=1.6  ECAN Espanola, ON                   

P: 11JAN2021 130413    46.0N   81.0W 2.0-4.1 AAAAA  Ohio/Lake Erie             

 

HAWAII

 

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

 

QUAKES AROUND NEW ZEALAND MAY INDICATE UPCOMING GLOBAL SEISMIC ENHANCEMENT

 

EARTHQUAKE SUMMARY FOR JANUARY 10, 2021

 

Earthquakes of M 5.5 each hit two oceanic ridge areas today - in the Southern East Pacific Rise and in the Balleny Islands south of New Zealand. These were not reported felt in these remote areas. The earthquake in the southern East Pacific Rise is the strongest within about 250 km of that epicenter since an M 5.7 on May 14, 2020 and prior to that an M 5.8 on September 27, 2019. Forecast 130183 had expected enhanced activity in this area was likely in early January, 2021. This earthquake is at 143 degrees of the Dodecanese quake of October 30, 2020 and may have been promoted by energy from that source.

 

O: 10JAN2021 15:44:47  35.4S  105.9W Mw=5.5  EMSC   SOUTHERN EAST PACIFIC RISE   

P: 01JAN2021 130183    36.0S  097.0W 4.0-5.4 AAAAA  Chile Rise                 

 

An earthquake of M 4.5 occurred near the antipode of the M 5.5 in the East Pacific Rise about 30 minutes prior to that event and may have been related to it through external forces. Forecast 130336 had expected today's event wasl likely within about 100 km of this epicenter around January 12.

 

O: 10JAN2021 15:14:41  36.6N   70.9E mb=4.5  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 12JAN2021 130336    36.0N   72.0E 3.8-5.2 AAAAA  Hindu Kush/Pakistan        

 

The M 5.5 south of New Zealand in the Balleny Islands was also located at an unusual epicenter. The last earthquakes within about 300 km of this epicenter in the Balleny Islands with M>=5.5 occurred in 2016 on January 31 (M 6.0) and June 15 (M 5.6). Today's event followed a series of unusual moderate earthquakes west of New Zealand.  Events in this region often precede strong enhancement in global seismicity, especially in the area of the coast of South America as detailed in this summary several days prior to the last strong earthquake in the world - the M 6.7 in Los Lagos, Chile as:

 

 

"An unusual earthquake occurred northwest of New Zealand today with M 4.8.  This is the strongest earthquake within about 300 km of this epicenter in at least 30 years. Previous earthquakes in this region have often  occurred within hours or days of strong earthquakes in southern Chile as discussed in this summary on February 24-25, 2010, ten years ago, several days before an M 8.8 in Central Chile" (December 26-27, 2020)

 

Some of today's activity may be related to strong tidal stresses related to the upcoming new moon as noted in previous issues of this summary:

 

"The new moon will arrive at 05:00 UT on January 13. Longitudes which are at sub-lunar conditions (local solar midnight) at this time are near 75 West and those at sub-solar conditions (local solar noon) are near 105 East. These include in the west, the west coast of South America and eastern North America and in the east western and central Indonesia, the Philippines and Taiwan among others. These areas are most likely to see tidally enhanced seismicity in the next week through January 17, 2021. Tidal enhancement is most likely near local solar noon and midnight. A strong global earthquake is likely in this period." (January 8-10, 2021)

 

O: 11JAN2021 04:45:42  63.3S  170.8E mb=5.5  EMSC   BALLENY ISLANDS REGION       

 

Much of today's unusual activity occurred at the very deep focus of 750 depth within a limited time. This included strong deep focus earthquakes of M 5.6 in the Flores Sea, the largest in the world today, as well as both events west of New Zealand and a smaller quake in Mendoza, Argentina.  An external stressor may have been enabling of this activity.

 

O: 11JAN2021 01:20:38   7.2S  120.4E Mw=5.6  EMSC   FLORES SEA                   

O: 11JAN2021 01:38:47   7.3S  120.7E mb=4.8  EMSC   FLORES SEA

P: 10JAN2021 129902     8.0S  121.0E 4.0-5.6 AAAAA  Flores Island area         

 

An M 4.8 northwest of New Zealand is the strongest within about 250 km in this region in the past 30 years. It was not felt in the area. Forecast 130207 had expected regional activity would be enhanced around January 9.

 

O: 11JAN2021 01:28:03  38.5S  170.9E ML=4.8  EMSC   NORTHWEST OF NEW ZEALAND     

O: 11JAN2021 01:46:01  40.0S  168.3E ML=4.0  EMSC   OFF W. COAST OF S. ISLAND, N.Z

P:  9JAN2021 130207    43.0S  171.0E 3.0-5.2 ACBAA  So. Island, N.Z.           

 

O: 11JAN2021 00:45:26  36.7S  177.5E ML=3.5  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 12JAN2021 130512    38.0S  179.0E 3.0-4.7 ABAAA  North Island, N.Z.         

 

The strongest earthquake in the U.S. or Canada today was an M 3.9 in the Alaska Peninsula. This epicenter is southeast of the aftershock zone of the October 19, 2020. M 7.6 in a somewhat unusual region of the Alaska Peninsula. The last earthquake within about 150 km of this epicenter with larger magnitude was an M 4.1 on October 19, 2020, in concert with the M 7.6 mainshock on that date. An M 4.1 hit the area two days before this on October 17, 2020 and may have been precursory to the M 7.6. Forecast 130430 had expected activity southwest of this around January 13.

 

 

O: 10JAN2021 13:17:35  57.0N  155.5W mb=3.9  EMSC   ALASKA PENINSULA              

P: 13JAN2021 130430    54.8N  158.7W 3.5-4.9 BCBAA  Alaska Peninsula           

 

The current swarm in Southern California near the Baja border continued today and included an M 3.3. This event occurred near local solar midnight and may have been enhanced by tidal stresses which maximize at this hour. This swarm restarted on January 4, 2021 with an M 4.0. Forecast 130359 had expected this activity around January 15.

 

NEIC reported these earthquakes of M 3.2 and M 2.7 in Southern California were felt with intensity II-III in the area(s) of Southern California in Calipatria, Westmorland, La Quinta and San Diego.

 

O: 10JAN2021 21:28:45  32.8N  115.8W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 07:01:48  33.2N  115.6W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 07:59:01  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:21:03  33.2N  115.6W ML=3.3  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:23:46  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:53:56  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:53:56  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:02:15  33.3N  115.5W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 11JAN2021 04:58:37  32.7N  115.8W Ml=2.2  EMSC   SOUTHERN CALIFORNIA           

P: 15JAN2021 130359    32.8N  115.4W 2.5-4.6 BAAAA  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: 10JAN2021 15:14:41  36.6N   70.9E mb=4.5  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 12JAN2021 130336    36.0N   72.0E 3.8-5.2 AAAAA  Hindu Kush/Pakistan        

 

O: 10JAN2021 19:38:22  41.0N   73.6E mb=4.7  EMSC   KYRGYZSTAN                   

P:  9JAN2021 130063    41.0N   77.0E 4.0-5.5 AACAA  Kirgizstan/Xinjiang        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 11JAN2021 01:57:26   1.0N  120.0E Mw=5.2  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 15JAN2021 130225     1.0N  120.0E 4.0-5.4 BAAAA  Celebes Sea                

 

O: 10JAN2021 09:11:24   4.5S  153.4E ML=4.5  EMSC   NEW IRELAND REGION, P.N.G.

O: 10JAN2021 11:49:42   5.2S  153.4E mb=5.0  EMSC   NEW IRELAND REGION, P.N.G.   

P: 12JAN2021 130247     5.0S  153.0E 4.0-5.4 AAAAA  New Britain                

 

O: 10JAN2021 08:26:10   5.7S  129.7E ML=4.5  EMSC   BANDA SEA                    

P: 10JAN2021 129923     7.0S  130.0E 4.0-5.6 ABAAA  West Irian, PNG            

 

O: 11JAN2021 01:20:38   7.2S  120.4E Mw=5.6  EMSC   FLORES SEA                   

O: 11JAN2021 01:38:47   7.3S  120.7E mb=4.8  EMSC   FLORES SEA

P: 10JAN2021 129902     8.0S  121.0E 4.0-5.6 AAAAA  Flores Island area         

 

O: 10JAN2021 22:40:16   8.3S  116.2E mb=4.5  EMSC   LOMBOK REGION, INDONESIA     

P: 11JAN2021 130262     9.0S  118.0E 4.0-5.4 AABAA  Sumbawa Island area        

 

O: 10JAN2021 18:56:03   9.9S  122.6E ML=4.3  EMSC   SAVU SEA                     

P: 10JAN2021 130147    10.0S  124.0E 4.0-5.3 AABAA  Flores Island area         

 

O: 10JAN2021 15:14:29  19.1N  121.5E ML=3.2  EMSC   BABUYAN ISL REGION, PHILIPPINE

P: 10JAN2021 129974    20.0N  121.0E 4.0-5.6 AAAAA  Taiwan                     

 

 

CENTRAL AND SOUTH AMERICA

 

O: 10JAN2021 08:27:59   1.2N   79.7W ML=4.4  EMSC   NEAR COAST OF ECUADOR

O: 10JAN2021 09:31:01   1.3N   79.8W ML=4.0  EMSC   NEAR COAST OF ECUADOR

O: 10JAN2021 08:25:38   1.1N   79.6W ML=4.4  EMSC   NEAR COAST OF ECUADOR        

P: 15JAN2021 130243     1.0S   81.0W 4.0-5.7 BCAAA  Ecuador                    

 

O: 11JAN2021 04:00:10  12.7S   78.2W mb=4.7  EMSC   OFF COAST OF CENTRAL PERU    

P: 10JAN2021 130145    13.0S   77.0W 4.0-5.6 AAAAA  Central Peru               

P: 12JAN2021 130475    13.0S   77.0W 4.0-5.7 AAAAA  Central Peru               

 

O: 10JAN2021 18:11:16  14.0N   92.4W ML=4.0  EMSC   OFFSHORE GUATEMALA           

P: 10JAN2021 129933    15.0N   92.0W 3.5-5.3 AAAAA  Guatemala                  

 

O: 10JAN2021 19:38:56  15.1N   94.4W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 10JAN2021 11:29:49  15.1N   94.2W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 12JAN2021 130270    15.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 10JAN2021 11:20:33  15.5N   96.2W ML=4.3  EMSC   OFFSHORE OAXACA, MEXICO      

P: 10JAN2021 129949    15.0N   96.0W 3.5-5.4 AAAAA  Oaxaca, Mexico             

 

O: 10JAN2021 13:25:37  17.0N   94.7W ML=4.0  EMSC   OAXACA, MEXICO

O: 10JAN2021 21:02:51  16.1N   94.4W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  9JAN2021 129929    17.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 10JAN2021 18:19:16  18.0N   66.5W ML=3.1  EMSC   PUERTO RICO                  

O: 10JAN2021 19:01:46  19.1N   66.5W Md=3.1  EMSC   PUERTO RICO REGION            

P:  9JAN2021 129952    18.0N   66.0W 3.4-5.0 ABAAA  Puerto Rico                

 

NEIC reported this earthquake of M 3.5 in Southern Puerto Rico was felt with intensity II-III in the area(s) of Southern Puerto Rico at Ponce (IV) and San Juan.

 

O: 10JAN2021 09:20:37  19.5N  109.0W mb=4.3  EMSC   REVILLA GIGEDO ISLANDS REGION

O: 10JAN2021 22:47:17  20.0N  108.6W ML=4.0  EMSC   REVILLA GIGEDO ISLANDS REGION

P:  8JAN2021 129931    19.0N  109.0W 3.5-5.2 AAAAA  Coast of Jalisco, Mexico   

 

O: 10JAN2021 22:11:06  22.5S   68.6W mb=4.9  EMSC   ANTOFAGASTA, CHILE           

O: 10JAN2021 20:42:16  24.1S   66.8W Mw=4.7  EMSC   JUJUY, ARGENTINA             

P:  9JAN2021 130165    24.0S   69.0W 4.0-5.8 AACAA  Coast No. Chile            

 

O: 11JAN2021 02:16:37  32.4S   66.8W ML=4.2  EMSC   SAN LUIS, ARGENTINA          

P: 14JAN2021 130508    33.0S   73.0W 4.0-5.9 BACAA  Central Chile              

 

O: 10JAN2021 08:15:19  34.7S   71.8W mb=4.7  EMSC   LIBERTADOR O'HIGGINS, CHILE  

P: 16JAN2021 130508    35.0S   72.0W 4.0-5.6 CAAAA  Central Chile              

 

NEIC reported this earthquake of M 4.7 in O'Higgins, Chile was felt with intensity II-III in the area(s) of O'Higgins, Chile in San Fernando, Talca, Rancagua, Machali and Santiago.

 

AFRICA AND EUROPE

 

O: 10JAN2021 19:53:01  40.1N   33.3E Mw=4.5  EMSC   CENTRAL TURKEY               

P:  9JAN2021 130045    39.0N   33.0E 3.5-5.1 ABAAA  Turkey                     

P: 16JAN2021 130406    41.0N   33.0E 3.5-5.2 CAAAA  No. Turkey/Black Sea       

 

NEIC reported this earthquake of M 4.5 in Central Turkey was felt with intensity II-III in the area(s) of Central Turkey at Elmadag, Ankara and Incesu.

 

O: 10JAN2021 11:58:17  45.4N   16.1E ML=3.8  EMSC   CROATIA

O: 10JAN2021 23:28:01  45.4N   16.2E ML=3.8  EMSC   CROATIA                      

P: 13JAN2021 130381    45.0N   16.0E 3.0-5.2 BAAAA  Adriatic Sea               

 

O: 10JAN2021 17:32:27  45.7N   26.6E ML=3.6  EMSC   ROMANIA                      

P: 12JAN2021 130418    46.0N   27.0E 3.0-5.3 AAAAA  Romania/NW Turkey          

 

O: 10JAN2021 20:07:35  42.9N   45.7E mb=4.0  EMSC   CAUCASUS REGION, RUSSIA      

P: 14JAN2021 130384    43.0N   44.0E 3.5-5.2 BABAA  Caucasus/Caspian Sea       

 

SOUTHWEST PACIFIC

 

O: 10JAN2021 13:55:32  18.8S  177.7W mb=4.4  EMSC   FIJI REGION                  

P:  7JAN2021 130158    19.0S  178.0W 4.0-5.4 BAAAA  Tonga Islands              

 

O: 10JAN2021 15:29:26  25.1S  179.8E mb=4.7  EMSC   SOUTH OF FIJI ISLANDS        

P:  6JAN2021 130174    25.0S  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: 11JAN2021 04:45:42  63.3S  170.8E mb=5.5  EMSC   BALLENY ISLANDS REGION       

 

O: 10JAN2021 15:44:47  35.4S  105.9W Mw=5.5  EMSC   SOUTHERN EAST PACIFIC RISE   

P: 01JAN2021 130183    36.0S  097.0W 4.0-5.4 AAAAA  Chile Rise                 

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 11JAN2021 00:45:26  36.7S  177.5E ML=3.5  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 12JAN2021 130512    38.0S  179.0E 3.0-4.7 ABAAA  North Island, N.Z.         

 

O: 11JAN2021 01:28:03  38.5S  170.9E ML=4.8  EMSC   NORTHWEST OF NEW ZEALAND     

O: 11JAN2021 01:46:01  40.0S  168.3E ML=4.0  EMSC   OFF W. COAST OF S. ISLAND, N.Z

P:  9JAN2021 130207    43.0S  171.0E 3.0-5.2 ACBAA  So. Island, N.Z.           

 

O: 10JAN2021 08:04:26  41.8S  172.8E ML=3.9  EMSC   SOUTH ISLAND OF NEW ZEALAND  

P: 13JAN2021 130519    42.0S  172.0E 3.0-5.3 BAAAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

O: 11JAN2021 00:24:36  25.7N  124.4E Mw=4.9  EMSC   NORTHEAST OF TAIWAN          

P:  8JAN2021 129972    25.0N  123.0E 4.0-5.4 BAAAA  Ryukyu Islands             

P: 17JAN2021 130310    26.0N  125.0E 4.0-5.6 CAAAA  Ryukyu Islands             

 

O: 11JAN2021 04:50:35  28.0N  139.4E mb=4.4  EMSC   BONIN ISLANDS, JAPAN REGION  

P:  8JAN2021 129960    29.0N  140.0E 4.0-5.6 BAAAA  Bonin Islands              

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 11JAN2021 04:48:02  35.5N  118.4W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P: 14JAN2021 130363    35.4N  118.5W 2.5-4.4 BAAAA  So. California             

 

O: 10JAN2021 21:28:45  32.8N  115.8W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 07:01:48  33.2N  115.6W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 07:59:01  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:21:03  33.2N  115.6W ML=3.3  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:23:46  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:53:56  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:53:56  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:02:15  33.3N  115.5W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 11JAN2021 04:58:37  32.7N  115.8W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 15JAN2021 130359    32.8N  115.4W 2.5-4.6 BAAAA  So. California             

 

O: 11JAN2021 01:48:46  36.6N  121.1W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 15JAN2021 130326    36.8N  121.3W 2.5-5.0 BAAAA  Central California         

 

O: 10JAN2021 09:55:21  38.2N  117.9W ml=2.5  EMSC   NEVADA                       

P: 10JAN2021 129982    38.2N  118.1W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 10JAN2021 18:17:50  38.4N  118.6W ml=2.0  EMSC   NEVADA                       

P:  9JAN2021 129983    38.4N  118.7W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 11JAN2021 02:20:51  39.4N  120.2W ML=2.4  EMSC   NORTHERN CALIFORNIA          

P: 10JAN2021 129984    39.3N  120.0W 2.5-5.1 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.7 in Truckee, California was felt with intensity II-III in the area(s) of Truckee, California in Tahoe City.

 

O: 11JAN2021 04:27:09  40.6N  121.7W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P: 12JAN2021 130407    40.0N  120.9W 2.5-4.7 AAAAA  Northern California        

 

 

O: 10JAN2021 16:06:46  38.2N  117.9W ml=2.0  EMSC   NEVADA

O: 10JAN2021 17:47:52  38.2N  117.9W ML=3.4  EMSC   NEVADA

O: 10JAN2021 18:14:56  38.4N  118.6W ml=2.6  EMSC   NEVADA

O: 10JAN2021 09:55:21  38.2N  117.9W ml=2.5  EMSC   NEVADA                       

P: 10JAN2021 129982    38.2N  118.1W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 10JAN2021 21:28:45  32.8N  115.8W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 07:01:48  33.2N  115.6W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 07:59:01  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:21:03  33.2N  115.6W ML=3.3  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:23:46  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:53:56  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:53:56  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:02:15  33.3N  115.5W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

 

ALASKA

 

O: 10JAN2021 13:17:35  57.0N  155.5W mb=3.9  EMSC   ALASKA PENINSULA             

P: 13JAN2021 130430    54.8N  158.7W 3.5-4.9 BCBAA  Alaska Peninsula           

 

O: 10JAN2021 16:23:38  63.2N  150.7W mb=3.8  EMSC   CENTRAL ALASKA               

P:  7JAN2021 130131    63.1N  151.9W 3.2-4.9 BAAAA  Central Alaska              

P: 16JAN2021 130459    62.7N  150.6W 3.2-4.9 CAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  9JAN2021 14:57:51  60.7N  137.7W MB=3.8  ECAN of Haines Junction, YT         

P: 13JAN2021 130455    60.0N  138.0W 3.2-4.9 BAAAA  Central Alaska             

 

ROCKY MOUNTAINS REGION

 

O: 10JAN2021 10:16:28  44.4N  115.2W Ml=2.2  EMSC   SOUTHERN IDAHO

O: 10JAN2021 15:56:25  44.5N  115.2W ML=2.5  EMSC   SOUTHERN IDAHO

O: 10JAN2021 09:20:12  44.3N  115.2W Ml=2.4  EMSC   SOUTHERN IDAHO               

P:  8JAN2021 130068    44.5N  115.2W 2.0-4.0 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 10JAN2021 18:30:43  34.8N   85.1W Md=2.2  EMSC   GEORGIA, USA                 

P:  9JAN2021 130040    34.0N   85.0W 2.0-3.9 AAAAA  Southeast U.S.             

 

O: 10JAN2021 09:34:34  35.1N   95.3W ML=2.5  EMSC   OKLAHOMA                     

P:  9JAN2021 130042    35.0N   96.0W 2.0-4.0 AAAAA  Southern Plains            

 

O: 10JAN2021 22:53:14  37.3N   97.5W ML=2.7  EMSC   KANSAS                       

P:  6JAN2021 130043    36.0N   98.0W 2.0-4.2 BBAAA  Southern Plains            

 

NEIC reported this earthquake of M 2.7 in Kansas was felt with intensity II-III in the area(s) of Kansas in Mayfield and Wellington.

 

HAWAII

 

O: 10JAN2021 15:15:06  19.5N  155.3W ML=3.3  EMSC   ISLAND OF HAWAII, HAWAII     

P: 12JAN2021 130276    19.2N  155.1W 3.0-4.5 AAAAA  Hawaii                     

 

O: 11JAN2021 05:32:46  20.4N  155.9W ML=3.4  EMSC   HAWAII REGION, HAWAII        

P: 12JAN2021 130303    20.1N  156.1W 4.0-5.6 AAAAA  Hawaii area                

 

STRONG EARTHQUAKES IN VANUATU AND NORTHERN CHILE

 

EARTHQUAKE SUMMARY FOR JANUARY  9, 2021

 

Strong earthquakes in Vanuatu (M 6.1) and northern Argentina (M 6.1) continued seismic enhancement in those areas today. The earthquake of M 6.0-6.1 in Vanuatu was reported by NEIC to have been felt with intensity III in Luganville, Sanma, Vanuatu. The last earthquake within about 200 km of this epicenter in central Vanuatu with M>6.0 occurred with M 6.2 on September 6, 2020 with M 6.2 and prior to that as an M 6.4 on August 5, 2020. Forecasts 130161 and 130491 had expected today's activity within about 15 km was likely around January 8-12. This activity is near 103 degrees from the M 6.7 in Los Lagos of December 29, 2020 and was probably promoted by energy from that source.

 

O: 10JAN2021 06:48:20  16.1S  167.9E Mw=6.0  EMSC   VANUATU                      

P:  8JAN2021 130161    16.0S  168.0E 4.0-5.6 AAAAA  Vanuatu Islands            

P: 12JAN2021 130491    16.0S  168.0E 4.0-5.5 AAAAA  Vanuatu Islands            

 

The M 6.1 in northern Argentina was reported by NEIC to have been felt with intensity VI in Salta, Argentina; IV in Antofagasta, Chile and II in Iquique, Tarapaca, Chile. It was preceded by an M 4.5 foreshock that was felt with intensity III in Antofagasta. GUC reported this earthquake was felt with intensity  IV in  Antofagasta at Antofagasta, Calams, Mejillones and III in Taltal, Tocopilla; in Tarapaca with III in Iquique and II in El Loa, La Tirana, Pica, Pozo Almonte; and in Atacama with IV in Chararal, Diego de Almagro, El Salvador and III in Copiapo and Tierra Amarillo, Chile. This is the strongest earthquake within about 250 km of this epicenter since an M 6.3 on November 20, 2020 and prior to that an M 6.3 on April 15, 2017. Forecasts 130163 and 130165 had expected today's event was likely in early January. The quake occurred within about 30 minutes of local solar midnight and may have been enhanced by strong tidal stresses which are maximized at this hour. Maximum stress with the next full moon on January 13 is near this longitude as noted in the tidal forecast for that alignment in this summary:

 

"The new moon will arrive at 05:00 UT on January 13. Longitudes which are at sub-lunar conditions (local solar midnight) at this time are near 75 West and those at sub-solar conditions (local solar noon) are near 105 East. These include in the west, the west coast of South America and eastern North America and in the east western and central Indonesia, the Philippines and Taiwan among others. These areas are most likely to see tidally enhanced seismicity in the next week through January 17, 2021. Tidal enhancement is most likely near local solar noon and midnight. A strong global earthquake is likely in this period." (January 9-10, 2021)

 

O: 10JAN2021 03:54:10  24.0S   66.7W Mw=6.1  EMSC   JUJUY, ARGENTINA             

O: 10JAN2021 03:54     24.0S   67.1W mb=5.9  GUC    Antofagasta at Antofagasta, Ca

P:  5JAN2021 130163    24.0S   67.0W 4.0-5.8 BAAAA  Argentina                  

P:  9JAN2021 130165    24.0S   69.0W 4.0-5.8 AABAA  Coast No. Chile            

 

Strongly felt earthquakes continued to be felt in the region of Zagreb, Croatia today. An M 4.8 was reported (NEIC) felt with intensity IV in Croatia at Sisak, Kulina, and II-III in Kuce, Gradici, Nicevec, Cazma, Ilova, Kozinscak and Kupinec and in Bosnia and Herzegovina. This is aftershock activity of the M 6.4 of December 29, 2020. Forecast 130051 had expected today's activity was likely around January 6.

 

O:  9JAN2021 21:29:09  45.4N   16.4E ML=4.5  EMSC   CROATIA                      

P:  6JAN2021 130051    45.0N   16.0E 3.0-5.2 BAAAA  Adriatic Sea               

 

An unusual earthquake of M 4.8 occurred today in the State of Chuuk, Micronesia. It was not reported felt in this remote area. The last earthquake of M>=4.8 within about 300 km of this epicenter occurred 10 years ago on November 26, 2011 after an M 5.7 on November 9, 2011. The only quake within 200 km of today's event at this magnitude was an M 4.8 about 150 km northwest on October 1, 1994. Forecast 130294 had expected enhanced regional seismicity around January 12, 2021.

 

O:  9JAN2021 15:00:57   9.7N  148.1E mb=4.8  EMSC   STATE OF CHUUK, MICRONESIA   

P: 12JAN2021 130294    12.0N  144.0E 4.0-5.5 BCCAA  So. Marianas/Guam          

 

The strongest earthquake in the U.S. or Canada today was an M 4.6 in the eastern Rat Islands, Aleutians, Alaska. An M 4.6 hit this area of the Rat Islands on January 6, 2021 but the last event of larger magnitude in the Rat Islands was an M 4.9 on September 24, 2020. Forecasts 130116 and 130445 had expected this event within about 50 km in early to mid-January, 2021.

 

O: 10JAN2021 02:44:36  51.9N  178.6E mb=4.6  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  4JAN2021 130116    50.0N  178.0E 4.0-5.7 CBAAA  Rat Islands                 

P: 15JAN2021 130445    52.0N  178.0E 4.0-5.6 BAAAA  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: 10JAN2021 03:23:28  23.7N  121.6E mb=4.7  EMSC   TAIWAN                       

O: 10JAN2021 03:23:29  23.8N  121.5E ML=4.9  TAI    Hualien, Taiwan              

P:  8JAN2021 129972    25.0N  123.0E 4.0-5.4 ABAAA  Ryukyu Islands             

P: 12JAN2021 130313    22.0N  121.0E 4.0-5.5 ABAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity IV in Hualien and Nantou; II in Yilan, Taichung, Taitung, Yunlin, Chiayi, Changhua, Miaoli and I in Chiayi, Taipei, Hsinchu, Tainan 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 Taipei, Taoyuan and Hsinchu and IV in Ilan.

 

O:  9JAN2021 11:35:52  24.8N  122.1E Mw=4.8  EMSC   TAIWAN REGION                

P:  8JAN2021 129972    25.0N  123.0E 4.0-5.4 AAAAA  Ryukyu Islands             

 

O:  9JAN2021 14:51:54  32.6N   76.5E mb=4.4  EMSC   HIMACHAL PRADESH, INDIA      

P:  9JAN2021 130016    35.0N   78.0E 3.8-5.1 ACBAA  Northern India             

 

O:  9JAN2021 06:44:45  39.7N   74.8E mb=4.2  EMSC   SOUTHERN XINJIANG, CHINA     

P:  8JAN2021 130062    40.0N   75.0E 4.0-5.6 AAAAA  Kirgizstan/Xinjiang        

 

O: 10JAN2021 01:12:45  41.8N   81.2E mb=4.1  EMSC   SOUTHERN XINJIANG, CHINA     

P: 15JAN2021 130393    42.0N   81.0E 4.0-5.4 BAAAA  Kirgizstan/Xinjiang        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 10JAN2021 06:11:30   3.2S  138.0E ML=4.5  EMSC   PAPUA, INDONESIA             

P:  5JAN2021 129922     2.0S  139.0E 4.0-5.6 BAAAA  West Irian, PNG            

P:  8JAN2021 129913     2.0S  140.0E 4.0-5.4 AABAA  Papua New Guinea           

 

O:  9JAN2021 07:14:26   5.5S  147.5E mb=4.3  EMSC   EASTERN NEW GUINEA REG., P.N.G

P:  5JAN2021 129908     6.0S  147.0E 4.0-5.4 BAAAA  New Ireland                

 

O:  9JAN2021 12:28:13   7.1S  129.5E Mw=5.0  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 10JAN2021 129923     7.0S  130.0E 4.0-5.6 AAAAA  West Irian, PNG            

 

O:  9JAN2021 15:00:57   9.7N  148.1E mb=4.8  EMSC   STATE OF CHUUK, MICRONESIA   

P: 12JAN2021 130294    12.0N  144.0E 4.0-5.5 BCCAA  So. Marianas/Guam          

 

CENTRAL AND SOUTH AMERICA

 

O:  9JAN2021 09:04:11  15.3N   94.6W ML=4.2  EMSC   OFF COAST OF OAXACA, MEXICO  

P:  9JAN2021 129929    15.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 10JAN2021 01:04:43  15.4N   97.8W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 10JAN2021 129949    15.0N   96.0W 3.5-5.4 AABAA  Oaxaca, Mexico             

 

O:  9JAN2021 13:04:10  16.6N   95.0W ML=4.1  EMSC   OAXACA, MEXICO               

P:  9JAN2021 129929    17.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O:  9JAN2021 22:52:36  16.6N  101.4W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  8JAN2021 129943    17.0N  101.0W 3.5-5.5 AAAAA  Michoacan, Mexico          

 

O:  9JAN2021 09:46:32  17.6N   95.0W ML=4.0  EMSC   VERACRUZ, MEXICO             

P:  9JAN2021 129929    17.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 10JAN2021 03:27:50  18.5S   69.5W mb=4.5  EMSC   TARAPACA, CHILE              

P:  8JAN2021 130155    18.0S   70.0W 4.0-5.6 AAAAA  So. Peru/Bolivia           

 

O: 10JAN2021 05:27:01  19.4N   65.8W Md=3.2  EMSC   PUERTO RICO REGION            

P:  7JAN2021 129959    20.0N   65.0W 3.0-4.8 BAAAA  Bahamas/No. Caribbean      

 

O:  9JAN2021 22:25:40  22.7N  106.3W ML=4.0  EMSC   OFFSHORE SINALOA, MEXICO     

O:  9JAN2021 23:20:00  22.9N  106.1W ML=3.8  EMSC   OFFSHORE SINALOA, MEXICO      

P:  9JAN2021 129931    19.0N  107.0W 3.5-5.2 ACAAA  Coast of Jalisco, Mexico   

 

O: 10JAN2021 03:54:10  24.0S   66.7W Mw=6.1  EMSC   JUJUY, ARGENTINA             

O: 10JAN2021 03:54     24.0S   67.1W mb=5.9  GUC    Antofagasta at Antofagasta, Ca

P:  9JAN2021 130165    24.0S   69.0W 4.0-5.8 AABAA  Coast No. Chile            

P:  5JAN2021 130163    24.0S   67.0W 4.0-5.8 BAAAA  Argentina                  

 

GUC reported this earthquake was felt with intensity  IV in  Antofagasta at Antofagasta, Calams, Mejillones and III in Taltal, Tocopilla; in Tarapaca with III in Iquique and II in El Loa, La Tirana, Pica, Pozo Almonte; and in Atacama with IV in Chararal, Diego de Almagro, El Salvador and III in Copiapo and Tierra Amarillo, Chile.

 

O:  9JAN2021 14:41:05  21.1S   69.6W ML=4.1  EMSC   TARAPACA, CHILE              

P:  7JAN2021 130165    22.0S   69.0W 4.0-5.6 AAAAA  Coast No. Chile            

 

 

AFRICA AND EUROPE

 

O:  9JAN2021 10:00:46  43.3N   19.0E ML=2.4  EMSC   BOSNIA AND HERZEGOVINA       

P:  7JAN2021 130050    42.0N   19.0E 3.0-5.2 ABAAA  Adriatic Sea               

 

O:  9JAN2021 21:29:09  45.4N   16.4E ML=4.5  EMSC   CROATIA                      

P:  6JAN2021 130051    45.0N   16.0E 3.0-5.2 BAAAA  Adriatic Sea               

 

O: 10JAN2021 03:15:33  63.9N   22.4W ML=3.1  EMSC   ICELAND REGION               

P:  6JAN2021 130133    62.0N   27.0W 3.0-4.6 BBBAA  Iceland area               

P: 14JAN2021 130461    63.0N   26.0W 3.0-4.4 BABAA  Iceland area               

 

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

 

SOUTHWEST PACIFIC

 

O:  9JAN2021 23:01:17  10.8S  162.4E Mw=5.3  EMSC   SOLOMON ISLANDS              

P:  6JAN2021 130150    10.0S  162.0E 4.0-5.5 BAAAA  No. of Santa Cruz Islands  

 

O: 10JAN2021 06:48:20  16.1S  167.9E Mw=6.0  EMSC   VANUATU                      

P:  8JAN2021 130161    16.0S  168.0E 4.0-5.6 AAAAA  Vanuatu Islands            

P: 12JAN2021 130491    16.0S  168.0E 4.0-5.5 AAAAA  Vanuatu Islands            

 

O:  9JAN2021 08:23:01  17.9S  178.5W Mw=5.2  EMSC   FIJI REGION                  

P:  7JAN2021 130158    17.0S  179.0W 4.0-5.5 AAAAA  Tonga Islands              

 

O: 09JAN2021 16:15:41  24.8S  179.7W mb=4.9  EMSC   SOUTH OF FIJI ISLANDS

O: 09JAN2021 15:12:32  25.1S  179.5W mb=4.9  EMSC   SOUTH OF FIJI ISLANDS

O: 10JAN2021 03:13:48  24.6S  179.9E mb=4.6  EMSC   SOUTH OF FIJI ISLANDS        

P:  6JAN2021 130174    25.0S  179.0E 4.0-5.6 BAAAA  Tonga/Fiji                 

 

OCEAN RIDGES

 

O: 10JAN2021 02:23:57  49.8S  116.0E mb=4.6  EMSC   WESTERN INDIAN-ANTARCTIC RIDGE

P:  6JAN2021 130212    49.0S  122.0E 4.0-5.8 BACAA  So. of Australia           

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  9JAN2021 16:22:20  32.9S  179.3E ML=3.8  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 14JAN2021 130515    33.0S  179.0E 4.0-5.4 BAAAA  So. Kermadec Islands       

 

O:  9JAN2021 17:20:53  37.1S  179.7E ML=3.5  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 12JAN2021 130512    38.0S  179.0E 3.0-4.7 BAAAA  North Island, N.Z.         

 

O:  9JAN2021 15:56:48  40.2S  174.5E ML=3.7  EMSC   COOK STRAIT, NEW ZEALAND     

O:  9JAN2021 17:54:38  40.5S  176.3E ML=3.5  EMSC   NORTH ISLAND OF NEW ZEALAND  

P:  7JAN2021 130199    40.0S  174.0E 3.0-4.5 AABAA  North Island, N.Z.         

P: 12JAN2021 130517    40.0S  176.0E 3.0-4.7 BAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 10JAN2021 06:38:20  37.8N  141.6E mb=4.5  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  7JAN2021 130019    38.0N  142.0E 4.0-5.6 BAAAA  Off East Coast Honshu      

P: 12JAN2021 130351    37.0N  142.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 10JAN2021 07:59:01  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 08:02:15  33.3N  115.5W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 05:20:16  33.5N  116.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10JAN2021 07:01:48  33.2N  115.6W ML=2.8  EMSC   SOUTHERN CALIFORNIA          

P:  6JAN2021 130026    32.9N  115.6W 2.5-4.6 BAAAA  So. California             

 

O: 10JAN2021 05:20:16  33.5N  116.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P:  7JAN2021 130029    33.4N  116.7W 2.5-4.4 BAAAA  So. California             

 

O:  9JAN2021 19:40:58  34.0N  117.2W Ml=2.3  EMSC   GREATER LOS ANGELES AREA, CALI

P: 10JAN2021 130028    33.8N  117.7W 2.5-4.4 AAAAA  So. California             

P: 13JAN2021 130361    34.1N  117.4W 2.5-4.4 BAAAA  So. California             

 

O:  9JAN2021 12:45:45  35.7N  117.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA          

P:  5JAN2021 130034    35.8N  117.6W 2.5-4.3 BAAAA  So. California             

 

O:  9JAN2021 22:41:51  36.6N  121.2W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P:  7JAN2021 129988    36.7N  121.4W 2.5-5.0 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in Central California was felt with intensity II-III in the area(s) of Central California in Monterey.

 

O:  9JAN2021 17:30:54  38.1N  118.0W ml=2.7  EMSC   NEVADA                       

P: 10JAN2021 129982    38.2N  118.1W 2.5-4.6 AAAAA  California/Nevada area     

 

O:  9JAN2021 09:34:05  40.0N  119.6W ML=2.7  EMSC   NEVADA                       

P:  7JAN2021 130053    40.5N  119.5W 2.5-4.9 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.8 near Reno, Nevada was felt with intensity II-III in the area(s) of near Reno, Nevada.

 

O:  9JAN2021 21:26:05  40.4N  124.4W Ml=3.3  EMSC   NORTHERN CALIFORNIA          

O:  9JAN2021 13:10:41  40.4N  124.8W ML=2.5  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  9JAN2021 129993    39.7N  123.7W 2.5-4.3 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.8 off northern California was felt with intensity II-III in the area(s) of Northern California at Petrolia and Whitethorn.

 

 

ALASKA

 

O: 10JAN2021 02:44:36  51.9N  178.6E mb=4.6  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  4JAN2021 130116    50.0N  178.0E 4.0-5.7 CBAAA  Rat Islands                

P: 15JAN2021 130445    52.0N  178.0E 4.0-5.6 BAAAA  Rat Islands                 

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 09JAN2021 14:57:51  60.7N  137.7W MB=3.8  ECAN of Haines Junction, YT  

O:  9JAN2021 14:57:50  60.7N  137.8W ML=3.6  EMSC   SOUTHERN YUKON TERRITORY, CANA

P:  2JAN2021 130125    60.0N  137.0W 3.2-5.1 CAAAA  Central Alaska             

P: 13JAN2021 130455    60.0N  138.0W 3.2-4.9 BAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.6 in Yukon Territory, Canada was felt with intensity II-III in the area(s) of Yukon Territory, Canada at Haines Junction.

 

ROCKY MOUNTAINS REGION

 

O: 10JAN2021 02:50:54  31.6N  104.3W mb=2.5  EMSC   WESTERN TEXAS                

P: 12JAN2021 130355    31.6N  103.6W 2.0-4.0 AAAAA  SW U.S.A                   

 

O:  9JAN2021 07:17:42  44.2N  115.0W ML=2.5  EMSC   SOUTHERN IDAHO               

P: 13JAN2021 130397    44.5N  115.2W 2.0-4.0 BAAAA  Montana/Idaho              

 

NEIC reported an earthquake of M 3.0 in Southern Texas was felt with intensity II-III in the area(s) of Southern Texas at Carrizo Springs.

 

EASTERN U.S./CANADA

 

O:  9JAN2021 09:59:16  35.1N   95.3W ML=2.3  EMSC   OKLAHOMA                     

P:  9JAN2021 130042    35.0N   96.0W 2.0-4.0 AAAAA  Southern Plains            

 

O:  9JAN2021 10:14:42  35.3N   97.9W ML=2.4  EMSC   OKLAHOMA                      

P:  6JAN2021 130043    36.0N   98.0W 2.0-4.2 BAAAA  Southern Plains            

 

O: 10JAN2021 06:52:16  37.3N   97.5W mb=2.8  EMSC   KANSAS                       

P:  6JAN2021 130043    36.0N   98.0W 2.0-4.2 BBAAA  Southern Plains             

 

NEIC reported this earthquake of M 2.8 in Kansas was felt with intensity II-III in the area(s) of Kansas at Wellington.

 

HAWAII

 

O:  9JAN2021 18:34:48  19.3N  155.4W ML=3.3  EMSC   ISLAND OF HAWAII, HAWAII     

O: 10JAN2021 03:15:00  19.5N  155.4W ML=3.4  EMSC   ISLAND OF HAWAII, HAWAII     

P: 12JAN2021 130276    19.2N  155.1W 3.0-4.5 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.1 in Hawaii was felt with intensity II-III in the area(s) of Hawaii in Hilo and Papaikou.

 

MODERATE QUAKES CONTINUE IN KERMADEC AND SOUTH SANDWICH ISLANDS

 

EARTHQUAKE SUMMARY FOR JANUARY  8, 2021

 

The strongest earthquake in the world today was an M 5.5 in central Vanuatu.

This follows an M 6.1 in southern Vanuatu yesterday. The last earthquake within about 100 km of today's epicenter was an M 6.4 on August 5, 2020. Several quakes of M6.0-6.2 hit about 100 km south of today's event in early September, 2020. Forecast 130161 had expected today's mainshock was likely within about 10 km of the epicenter around January 8, 2021. This follows a series in the southwest Pacific detailed in previous issues which occurred in Indonesia, Vanuatu and the Kermadec Islands associated with a moderate geomagnetic storm. Today's M 5.5 occurred within about 45 minutes of local solar noon and may have been enhanced by tidal stresses which maximize near this hour.

 

O:  9JAN2021 01:39:39  16.1S  168.0E Mw=5.5  EMSC   VANUATU                      

P:  8JAN2021 130161    16.0S  168.0E 4.0-5.6 AAAAA  Vanuatu Islands             

 

A moderate earthquake of  M 5.2 also occurred today in the South Sandwich Islands. It was not reported felt in this remote area. The last earthquake of equal of greater magnitude in the South Sandwich Islands was an M 5.6 on January 4, 2021 and prior to that an M 5.2 on November 4, 2020. Forecast 130218 had expected today's earthquake was likely within about 100 km of this epicenter around January 5, 2021.

 

 

O:  8JAN2021 09:48:41  55.7S   28.6W mb=5.2  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  5JAN2021 130218    55.0S   28.0W 4.0-5.8 BAAAA  So. Sandwich Islands       

 

An earthquake of M 5.2 also occurred as an aftershock of yesterday's M 6.3 in the northern Kermadec Islands. Today's event occurred within about 15 minutes of local solar midnight and was probably promoted by tidal stresses which  maximize near this hour. Forecast 130187 had expected today's activity was likely around January 6, 2021.

 

O:  9JAN2021 06:18:21  30.1S  179.2E ML=4.3  EMSC   KERMADEC ISLANDS REGION      

O: 08JAN2021 11:41:57  30.6S  179.7W Mw=5.2  EMSC   KERMADEC ISLANDS REGION

P:  6JAN2021 130187    30.0S  178.0W 4.0-5.4 AAAAA  No. Kermadec Islands       

 

The strongest earthquake in the U.S. or Alaska today was an M 4.5 in the Fox Islands, Aleutians, Alaska. It was not reported felt in this remote area. The last earthquake in the Fox Islands of M>=4.5 was an M 4.5 on December 14, 2020. The last of larger magnitude was an M 6.4 about 200 km east of today's epicenter. Forecast 130104 had expected today's event in this region was likely around January 9, 2021.

 

O:  8JAN2021 16:24:40  51.9N  170.9W mb=4.5  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  9JAN2021 130104    52.1N  172.8W 3.5-5.1 AABAA  Andreanoff Isls, Aleutians 

 

Moderate earthquakes occurred today in the Virgin Islands with M 3.9 and 4.1.

The last earthquake located in the Virgin Islands with M>4.0 occurred on November 27, 2020 with M 4.2. Forecast 129937 had expected today's activity was likely within about 50 km of these epicenter around January 7. This activity is at the sixth node (60 degrees) from the M 6.7 in Los Lagos, Chile of December 27, 2020 and may have been promoted by energy from that source.

 

O: 08JAN2021 09:32:05  19.2N   64.3W mb=4.1  EMSC   VIRGIN ISLANDS REGION

O: 08JAN2021 19:17:31  19.2N   64.3W mb=3.7  EMSC   VIRGIN ISLANDS REGION

O:  8JAN2021 08:59:15  19.2N   64.8W ML=3.9  EMSC   VIRGIN ISLANDS REGION        

P:  7JAN2021 129937    19.0N   64.0W 3.0-5.2 AAAAA  Leeward 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:  8JAN2021 09:04:15  22.1N  121.7E ML=4.2  EMSC   TAIWAN REGION                

O:  8JAN2021 09:04:15  22.1N  121.7E ML=4.2  TAI    Hualien, Taiwan              

P:  5JAN2021 129974    22.0N  122.0E 4.0-5.4 BAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity IV in Taitung, Taiwan.

 

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

 

INDONESIA AND PHILIPPINES

 

O:  8JAN2021 23:17:13   5.2N   94.9E ML=4.2  EMSC   NORTHERN SUMATRA, INDONESIA  

P:  4JAN2021 129892     4.0N   93.0E 4.0-5.4 BBBAA  Nicobar Islands            

 

O: 09JAN2021 06:25:36   6.1N  126.2E mb=4.2  EMSC   MINDANAO, PHILIPPINES

O:  8JAN2021 16:48:22   5.9N  125.9E ML=4.2  EMSC   MINDANAO, PHILIPPINES        

P:  9JAN2021 129891     5.0N  125.0E 4.0-5.3 AAAAA  Mindanao, Philippines      

 

O:  8JAN2021 19:22:27   7.0S  129.5E mb=4.4  EMSC   BANDA SEA                    

P: 10JAN2021 129923     7.0S  130.0E 4.0-5.6 AAAAA  West Irian, PNG            

 

O:  8JAN2021 16:49:59   7.3S  120.2E Mw=5.1  EMSC   FLORES SEA                   

P: 10JAN2021 129902     8.0S  121.0E 4.0-5.6 AAAAA  Flores Island area         

 

O:  8JAN2021 14:04:32  12.0S  116.4E mb=4.2  EMSC   SOUTH OF LOMBOK, INDONESIA   

P:  9JAN2021 130156    11.0S  116.0E 4.0-5.4 AAAAA  So. of Indonesia           

 

CENTRAL AND SOUTH AMERICA

 

O:  8JAN2021 18:50     62.2S   58.4W mb=4.2  GUC    Magallanes and Antartida, Chil

P:  5JAN2021 130223    62.0S   58.0W 4.0-5.8 BAAAA  Southern  Ocean            

 

GUC reported this earthquake was felt with intensity  III in  Magallanes and Antartida, Chilena at Antartida.

 

O: 09JAN2021 03:33:33  16.9N  101.7W mb=4.6  EMSC   OFFSHORE GUERRERO, MEXICO

O:  8JAN2021 18:19:36  16.6N  101.0W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  8JAN2021 129943    17.0N  101.0W 3.5-5.5 AAAAA  Michoacan, Mexico          

 

O:  8JAN2021 17:10:52  15.9N   96.2W ML=4.1  EMSC   OAXACA, MEXICO               

P: 10JAN2021 129949    15.0N   96.0W 3.5-5.4 AAAAA  Oaxaca, Mexico             

 

O:  8JAN2021 21:14:57  17.3N   94.7W ML=4.0  EMSC   VERACRUZ, MEXICO             

P:  9JAN2021 129929    17.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O:  8JAN2021 20:48:04  18.0N   66.6W Md=3.2  EMSC   PUERTO RICO REGION           

P:  9JAN2021 129952    18.0N   66.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O:  9JAN2021 00:40:40  23.6S   67.0W mb=4.5  EMSC   JUJUY, ARGENTINA             

O:  8JAN2021 12:54:17  26.4S   65.9W ML=4.0  EMSC   TUCUMAN, ARGENTINA           

P:  5JAN2021 130163    24.0S   67.0W 4.0-5.8 BCAAA  Argentina                  

 

 

O: 08JAN2021 09:32:05  19.2N   64.3W mb=4.1  EMSC   VIRGIN ISLANDS REGION

O: 08JAN2021 19:17:31  19.2N   64.3W mb=3.7  EMSC   VIRGIN ISLANDS REGION

O:  8JAN2021 08:59:15  19.2N   64.8W ML=3.9  EMSC   VIRGIN ISLANDS REGION        

P:  7JAN2021 129937    19.0N   64.0W 3.0-5.2 AAAAA  Leeward Islands            

 

AFRICA AND EUROPE

 

O:  9JAN2021 04:33:54  35.7N   26.3E ML=4.0  EMSC   CRETE, GREECE                

P:  9JAN2021 129977    36.0N   24.0E 3.0-4.7 AABAA  Aegean Sea                 

 

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

 

SOUTHWEST PACIFIC

 

O:  9JAN2021 01:39:39  16.1S  168.0E Mw=5.5  EMSC   VANUATU                      

P:  8JAN2021 130161    16.0S  168.0E 4.0-5.6 AAAAA  Vanuatu Islands            

 

O:  8JAN2021 12:08:55  17.3S  173.5W mb=5.0  EMSC   TONGA                        

P:  3JAN2021 130157    16.0S  174.0W 4.0-5.6 BBAAA  Tonga Islands              

 

O:  8JAN2021 18:36:42  17.6S  172.5W Mw=5.0  EMSC   TONGA REGION                 

P:  6JAN2021 130157    18.0S  175.0W 4.0-5.6 AACAA  Tonga Islands              

 

O:  9JAN2021 06:33:00  19.1S  177.3W mb=4.3  EMSC   FIJI REGION                  

P:  7JAN2021 130158    19.0S  178.0W 4.0-5.4 AAAAA  Tonga Islands              

 

O:  8JAN2021 09:01:38  26.0S  179.5E ML=4.3  EMSC   SOUTH OF FIJI ISLANDS        

P:  6JAN2021 130174    25.0S  179.0E 4.0-5.6 AAAAA  Tonga/Fiji                 

 

OCEAN RIDGES

 

O:  8JAN2021 18:50     62.2S   58.4W mb=4.2  GUC    Magallanes and Antartida, Chil

P:  5JAN2021 130223    62.0S   58.0W 4.0-5.8 BAAAA  Southern  Ocean            

 

GUC reported this earthquake was felt with intensity  III in  Magallanes and Antartida, Chilena at Antartida.

 

O:  8JAN2021 09:48:41  55.7S   28.6W mb=5.2  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  5JAN2021 130218    55.0S   28.0W 4.0-5.8 BAAAA  So. Sandwich Islands       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  9JAN2021 06:18:21  30.1S  179.2E ML=4.3  EMSC   KERMADEC ISLANDS REGION      

O: 08JAN2021 11:41:57  30.6S  179.7W Mw=5.2  EMSC   KERMADEC ISLANDS REGION

P:  6JAN2021 130187    30.0S  178.0W 4.0-5.4 AAAAA  No. Kermadec Islands       

 

O: 08JAN2021 18:19:24  32.7S  179.0E ML=4.6  EMSC   SOUTH OF KERMADEC ISLANDS

O: 09JAN2021 01:29:07  33.3S  178.4E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS

O:  8JAN2021 21:35:55  32.4S  179.8E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  4JAN2021 130195    33.0S  178.0E 4.0-5.3 BABAA  So. Kermadec Islands       

 

 

JAPAN AND KURIL ISLANDS

 

O:  8JAN2021 19:49:34  37.6N  145.0E mb=4.3  EMSC   OFF EAST COAST OF HONSHU, JAPA

O:  9JAN2021 05:36:34  37.9N  142.6E mb=4.6  EMSC   OFF EAST COAST OF HONSHU, JAPA

P:  7JAN2021 130019    38.0N  142.0E 4.0-5.6 AAAAA  Off East Coast Honshu      

 

O:  8JAN2021 15:04:44  41.5N  141.4E mb=4.4  EMSC   HOKKAIDO, JAPAN REGION       

P:  9JAN2021 130059    43.0N  142.0E 3.5-5.8 ABAAA  Hokkaido, Japan            

 

O:  8JAN2021 21:50:59  43.9N  138.2E mb=4.3  EMSC   EASTERN SEA OF JAPAN         

P:  5JAN2021 130088    42.0N  137.0E 3.5-5.6 BBAAA  Sea of Japan               

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  8JAN2021 22:25:23  32.6N  115.4W Ml=2.3  EMSC   MEXICALI AREA, BAJA CALIF., ME

P:  6JAN2021 130026    32.9N  115.6W 2.5-4.6 AAAAA  So. California             

 

O:  8JAN2021 17:08:44  34.2N  117.5W Ml=2.1  EMSC   GREATER LOS ANGELES AREA, CALI

P:  5JAN2021 130029    33.7N  117.5W 2.5-4.3 BAAAA  So. California             

P: 10JAN2021 130028    33.8N  117.7W 2.5-4.4 AAAAA  So. California             

 

O:  8JAN2021 17:41:11  36.6N  121.3W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P:  7JAN2021 129988    36.7N  121.4W 2.5-5.0 AAAAA  Central California         

 

O:  9JAN2021 03:03:46  37.6N  118.8W Md=2.5  EMSC   CENTRAL CALIFORNIA           

P:  9JAN2021 129981    37.3N  119.4W 2.5-4.7 AAAAA  California/Nevada area     

 

O:  8JAN2021 08:55:29  38.0N  118.8W ml=2.2  EMSC   CENTRAL CALIFORNIA           

P:  9JAN2021 129983    38.4N  118.7W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 09JAN2021 05:57:51  38.2N  118.1W ml=2.3  EMSC   NEVADA

O:  8JAN2021 18:26:43  38.2N  117.9W ml=2.2  EMSC   NEVADA                       

P: 10JAN2021 129982    38.2N  118.1W 2.5-4.6 AAAAA  California/Nevada area     

 

O:  9JAN2021 04:12:49  40.0N  119.6W ML=2.6  EMSC   NEVADA                       

P:  7JAN2021 130053    40.5N  119.5W 2.5-4.9 AAAAA  California/Nevada area     

 

ALASKA

 

O:  8JAN2021 16:24:40  51.9N  170.9W mb=4.5  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  9JAN2021 130104    52.1N  172.8W 3.5-5.1 AABAA  Andreanoff Isls, Aleutians 

 

O:  8JAN2021 07:35:23  52.0N  173.6E mb=4.3  EMSC   NEAR ISLANDS, ALEUTIAN ISLANDS

P:  5JAN2021 130116    52.0N  175.0E 4.0-5.9 BAAAA  Rat Islands                

 

O:  9JAN2021 05:22:31  52.8N  168.2W mb=4.3  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  4JAN2021 130108    51.9N  169.2W 3.5-5.2 BAAAA  Fox Islands, Aleutians     

 

O:  8JAN2021 20:29:14  63.2N  150.6W mb=4.5  EMSC   CENTRAL ALASKA               

P:  7JAN2021 130131    63.1N  151.9W 3.2-4.9 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  8JAN2021 09:13:30  42.2N  124.5W Ml=2.2  EMSC   OFFSHORE OREGON              

P:  9JAN2021 130081    41.8N  126.9W 2.5-4.7 AABAA  Off Coast of No. Calif     

 

O:  9JAN2021 02:41:06  43.5N  123.1W Ml=2.2  EMSC   OREGON                       

P: 10JAN2021 130084    45.3N  121.7W 2.0-4.3 ABBAA  Oregon state, U.S.         

 

O:  8JAN2021 13:31:18  46.3N  120.0W Md=2.2  EMSC   WASHINGTON                   

P:  5JAN2021 130084    45.2N  120.1W 2.0-4.1 BBAAA  Oregon state, U.S.         

 

O:  7JAN2021 18:14:37  66.7N  135.9W MB=3.4  ECAN Fort McPherson, NT             

P:  4JAN2021 130137    64.0N  134.0W 2.5-4.3 BCAAA  Yukon Territory, Canada    

 

ROCKY MOUNTAINS REGION

 

O:  8JAN2021 12:12:11  31.7N  104.4W ML=2.5  EMSC   WESTERN TEXAS                

P:  6JAN2021 130024    32.6N  104.6W 2.0-4.1 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O:  8JAN2021 03:47:12  47.5N   70.0W MB=1.3  ECAN Charlevoix Seismic Zone        

P:  7JAN2021 130065    47.0N   69.0W 2.0-4.3 AAAAA  Maine                      

 

HAWAII

 

O:  9JAN2021 02:23:01  19.4N  155.6W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII     

P:  7JAN2021 129935    19.9N  156.1W 3.0-4.6 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.2 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Captain Cook.

 

MODERATE QUAKES CONTINUE IN KERMADEC AND SOUTH SANDWICH ISLANDS

 

EARTHQUAKE SUMMARY FOR JANUARY  8, 2021

 

The strongest earthquake in the world today was an M 5.5 in central Vanuatu.

This follows an M 6.1 in southern Vanuatu yesterday. The last earthquake within about 100 km of today's epicenter was an M 6.4 on August 5, 2020. Several quakes of M6.0-6.2 hit about 100 km south of today's event in early September, 2020. Forecast 130161 had expected today's mainshock was likely within about 10 km of the epicenter around January 8, 2021. This follows a series in the southwest Pacific detailed in previous issues which occurred in Indonesia, Vanuatu and the Kermadec Islands associated with a moderate geomagnetic storm. Today's M 5.5 occurred within about 45 minutes of local solar noon and may have been enhanced by tidal stresses which maximize near this hour.

 

O:  9JAN2021 01:39:39  16.1S  168.0E Mw=5.5  EMSC   VANUATU                      

P:  8JAN2021 130161    16.0S  168.0E 4.0-5.6 AAAAA  Vanuatu Islands             

 

A moderate earthquake of  M 5.2 also occurred today in the South Sandwich Islands. It was not reported felt in this remote area. The last earthquake of equal of greater magnitude in the South Sandwich Islands was an M 5.6 on January 4, 2021 and prior to that an M 5.2 on November 4, 2020. Forecast 130218 had expected today's earthquake was likely within about 100 km of this epicenter around January 5, 2021.

 

 

O:  8JAN2021 09:48:41  55.7S   28.6W mb=5.2  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  5JAN2021 130218    55.0S   28.0W 4.0-5.8 BAAAA  So. Sandwich Islands       

 

An earthquake of M 5.2 also occurred as an aftershock of yesterday's M 6.3 in the northern Kermadec Islands. Today's event occurred within about 15 minutes of local solar midnight and was probably promoted by tidal stresses which  maximize near this hour. Forecast 130187 had expected today's activity was likely around January 6, 2021.

 

O:  9JAN2021 06:18:21  30.1S  179.2E ML=4.3  EMSC   KERMADEC ISLANDS REGION      

O: 08JAN2021 11:41:57  30.6S  179.7W Mw=5.2  EMSC   KERMADEC ISLANDS REGION

P:  6JAN2021 130187    30.0S  178.0W 4.0-5.4 AAAAA  No. Kermadec Islands       

 

The strongest earthquake in the U.S. or Alaska today was an M 4.5 in the Fox Islands, Aleutians, Alaska. It was not reported felt in this remote area. The last earthquake in the Fox Islands of M>=4.5 was an M 4.5 on December 14, 2020. The last of larger magnitude was an M 6.4 about 200 km east of today's epicenter. Forecast 130104 had expected today's event in this region was likely around January 9, 2021.

 

O:  8JAN2021 16:24:40  51.9N  170.9W mb=4.5  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  9JAN2021 130104    52.1N  172.8W 3.5-5.1 AABAA  Andreanoff Isls, Aleutians 

 

Moderate earthquakes occurred today in the Virgin Islands with M 3.9 and 4.1.

The last earthquake located in the Virgin Islands with M>4.0 occurred on November 27, 2020 with M 4.2. Forecast 129937 had expected today's activity was likely within about 50 km of these epicenter around January 7. This activity is at the sixth node (60 degrees) from the M 6.7 in Los Lagos, Chile of December 27, 2020 and may have been promoted by energy from that source.

 

O: 08JAN2021 09:32:05  19.2N   64.3W mb=4.1  EMSC   VIRGIN ISLANDS REGION

O: 08JAN2021 19:17:31  19.2N   64.3W mb=3.7  EMSC   VIRGIN ISLANDS REGION

O:  8JAN2021 08:59:15  19.2N   64.8W ML=3.9  EMSC   VIRGIN ISLANDS REGION        

P:  7JAN2021 129937    19.0N   64.0W 3.0-5.2 AAAAA  Leeward Islands            

 

STRONG SEISMIC ENHANCEMENT CONTINUES IN SOUTHWESTERN PACIFIC AREA

 

EARTHQUAKE SUMMARY FOR JANUARY  7, 2021

 

Seismicity in the Southwestern Pacific near the geomagnetic equator continued

today with events of M 6.1 in Vanuatu and M 6.3 in the northern Kermadec Islands of New Zealand. The earthquake in the northern Kermadec Islands is part of an activation of the region which began on January 6, 2021 with an M 6.2. This was expected to continue as noted in the previous issue of this summary:

 

"Two earthquakes of M 4.9 each were recorded in the northern Kermadec Islands, of New Zealand today. They were not reported felt in this remote area. These appear to be aftershocks of the M 6.2 that hit the area yesterday. Strong earthquakes in the northern Kermadec Islands tend to occur in clusters and more of this activity is expected in the next several days." (January 6-7, 2021)

 

and

 

"The largest earthquake in the world today was an M 6.2 in the northern Kermadec Islands, New Zealand. It was not reported felt in this remote area. This is the strongest earthquake in the northern Kermadec Islands within about 200 km of this epicenter since an M 6.2  on June 21, 2019, an event which followed an M 7.2 about 300 km southwest of today's epicenter which occurred on June 15, 2019. Forecasts 130187 and 130167 had expected today's activity between January 6 and 9, 2021 was likely within about 10 km of today's epicenter." (January 5-6, 2021) 

 

Forecast 130187 had expected today's event of M 6.3 was likely within about 100 km of this epicenter around January 6.

 

O:  8JAN2021 00:28:44  29.5S  178.8W Mw=6.3  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P:  6JAN2021 130187    30.0S  178.0W 4.0-5.4 AAAAA  No. Kermadec Islands       

 

The M 6.1 in Southern Vanuatu was reported felt with intensity IV in New Caledonia at Tadine and III in Noumea. This is the strongest earthquake in southern Vanuatu within about 200 km of this epicenter since an M 6.4 more than a year ago on October 21, 2019. Forecast 130166 had expected today's event within about 100 km was likely around January 4, 2021.

 

O:  8JAN2021 05:01:04  20.7S  169.9E Mw=6.1  EMSC   VANUATU                      

P:  4JAN2021 130166    21.0S  169.0E 4.0-5.5 BAAAA  Loyalty Islands            

 

An unusual earthquake, the largest in the U.S. or Canada today, of M 4.7 occurred off the east coast of New York in the North Atlantic today. The only earthquake within about 250 km of this epicenter in the past 30 years of M>=3.5 occurred as an M 4.2 on March 18, 2007. Today's event is the strongest in the area in at least three decades.

 

O:  6JAN2021 11:02:12  40.3N   53.7W MB=4.7  ECAN North Atlantic Ocean           

 

An aftershock of M 4.4 also occurred in the aftershock zone of the Alaska Peninsula following the M 7.6 of October 19, 2020. This is the strongest aftershock in this area since an M 4.5 on December 30, 2020. Forecast 130100 had expected this activity was likely around January 7, 2021.

 

O:  7JAN2021 15:51:31  54.6N  159.8W ML=3.0  EMSC   SOUTH OF ALASKA              

O:  8JAN2021 01:59:22  54.7N  159.7W mb=4.4  EMSC   SOUTH OF ALASKA              

P:  7JAN2021 130100    54.8N  158.7W 3.5-4.9 AAAAA  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:  8JAN2021 03:49:00  42.1N   81.2E mb=5.0  EMSC   NORTHERN XINJIANG, CHINA     

O:  8JAN2021 03:39:07  42.1N   85.7E mb=4.4  EMSC   NORTHERN XINJIANG, CHINA     

O:  8JAN2021 03:54:48  42.5N   81.0E mb=4.6  EMSC   KAZAKHSTAN-XINJIANG BORDER REG

P:  6JAN2021 130064    41.0N   83.0E 4.0-5.8 ABBAA  Kirgizstan/Xinjiang        

 

INDONESIA AND PHILIPPINES

 

O:  7JAN2021 08:40:01   0.1S  123.1E ML=4.0  EMSC   SULAWESI, INDONESIA          

P:  8JAN2021 129919     1.0S  122.0E 4.0-5.4 AAAAA  Sulawesi area              

P:  8JAN2021 129919     1.0S  124.0E 4.0-5.4 AAAAA  Sulawesi area              

 

O:  7JAN2021 16:48:16   4.0N  123.5E ML=4.4  EMSC   CELEBES SEA                   

P:  9JAN2021 129891     5.0N  125.0E 4.0-5.3 AABAA  Mindanao, Philippines      

 

O:  7JAN2021 15:59:21   6.2S  129.6E ML=4.7  EMSC   BANDA SEA                    

P: 10JAN2021 129923     7.0S  130.0E 4.0-5.6 BAAAA  West Irian, PNG             

 

O:  7JAN2021 19:05:34   6.7S  109.2E mb=4.4  EMSC   JAVA, INDONESIA              

P:  4JAN2021 129915     8.0S  108.0E 4.0-5.4 BBAAA  So. of Java                

 

O:  7JAN2021 16:47:21   7.6N  121.9E mb=4.4  EMSC   MINDANAO, PHILIPPINES         

P:  9JAN2021 129885     7.0N  124.0E 4.0-5.5 AABAA  Central Philippines        

 

NEIC reported this earthquake of M 4.4 in Mindanao, Philippines was felt with intensity II-III in the area(s) of Mindanao, Philippines in Zamboanga.

 

O:  7JAN2021 14:44:02   9.0S  110.3E ML=4.4  EMSC   JAVA, INDONESIA              

P:  7JAN2021 129916     9.0S  111.0E 4.0-5.6 AAAAA  So. of Java                

 

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

 

CENTRAL AND SOUTH AMERICA

 

O:  7JAN2021 18:19     29.8S   71.6W mb=4.4  GUC    Coquimbo at Andacollo, Coquimg

O:  7JAN2021 19:19     29.8S   71.6W mb=4.2  GUC    Coquimbo at La Higuera, Chile.

P:  7JAN2021 130184    30.0S   72.0W 4.0-5.9 AAAAA  Coast Central Chile         

 

GUC reported the earthquake of M 4.4 was felt with intensity  III in  Coquimbo at Andacollo, Coquimgo, La Higuera, La Serena, Rio Hurtado and Vicuna, Chile.

GUC reported the earthquake of M 4.2 was felt with intensity  III in  Coquimbo at La Higuera, Chile.

 

O:  7JAN2021 23:53:01   3.8S   75.4W mb=4.6  EMSC   NORTHERN PERU                

P:  9JAN2021 129910     6.0S   76.0W 4.0-5.4 ACAAA  No. Peru                   

P: 10JAN2021 129901     4.0S   80.0W 4.0-5.4 BBCAA  Ecuador                    

 

O:  7JAN2021 10:02:20  13.2N   91.0W mb=4.2  EMSC   OFFSHORE GUATEMALA           

P:  8JAN2021 129933    13.0N   91.0W 3.5-5.4 AAAAA  Guatemala                  

 

O:  8JAN2021 02:32:11  16.8N   99.5W ML=4.1  EMSC   GUERRERO, MEXICO             

O:  8JAN2021 03:00:38  16.8N   99.5W ML=4.3  EMSC   GUERRERO, MEXICO             

P:  8JAN2021 129950    16.0N  100.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O:  8JAN2021 03:57:03  17.9N   66.9W ML=3.3  EMSC   PUERTO RICO REGION           

P:  9JAN2021 129952    18.0N   66.0W 3.4-5.0 AAAAA  Puerto Rico                

 

NEIC reported this earthquake of M 3.4 in Puerto Rico was felt with intensity IV in the area(s) of Puerto Rico at Yauco.

 

O:  7JAN2021 10:05:28  18.1N   68.4W Md=3.6  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P:  7JAN2021 129953    18.0N   68.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O:  7JAN2021 18:19:08  29.7S   71.7W mb=4.7  EMSC   OFFSHORE COQUIMBO, CHILE     

O:  7JAN2021 19:19:48  29.8S   71.6W mb=4.4  EMSC   OFFSHORE COQUIMBO, CHILE     

P:  7JAN2021 130184    30.0S   72.0W 4.0-5.9 AAAAA  Coast Central Chile        

 

O:  7JAN2021 07:53:26  31.8S   71.6W mb=4.3  EMSC   OFFSHORE COQUIMBO, CHILE     

P:  7JAN2021 130177    32.0S   71.0W 4.0-5.9 AAAAA  Central Chile              

 

AFRICA AND EUROPE

 

O:  7JAN2021 11:06:45  45.4N   16.2E ML=3.7  EMSC   CROATIA                      

O:  7JAN2021 17:24:17  45.4N   16.3E Mw=3.8  EMSC   CROATIA                      

P:  6JAN2021 130051    45.0N   16.0E 3.0-5.2 AAAAA  Adriatic Sea                

 

NEIC reported this earthquake of M 4.0 in Croatia was felt with intensity II-III in the area(s) of Croatia in Zagreb.

 

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

 

SOUTHWEST PACIFIC

 

O:  8JAN2021 00:45:07  10.4S  161.5E mb=4.8  EMSC   SOLOMON ISLANDS              

P:  6JAN2021 130150    10.0S  162.0E 4.0-5.5 AAAAA  No. of Santa Cruz Islands  

 

O:  8JAN2021 05:01:04  20.7S  169.9E Mw=6.1  EMSC   VANUATU                      

P:  4JAN2021 130166    21.0S  169.0E 4.0-5.5 BAAAA  Loyalty Islands            

 

O:  7JAN2021 21:27:36  12.3S  167.1E mb=4.6  EMSC   SANTA CRUZ ISLANDS           

P:  6JAN2021 130160    13.0S  167.0E 4.0-5.8 AAAAA  Vanuatu Islands            

 

OCEAN RIDGES

 

O:  7JAN2021 07:26:51  42.6S   82.5W Mw=5.2  EMSC   WEST CHILE RISE              

P:  2JAN2021 130198    43.0S   83.0W 4.0-5.5 BAAAA  Chile Rise                 

 

O:  7JAN2021 09:17:12  46.8N   27.3W mb=4.8  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 10JAN2021 130075    45.0N   28.0W 4.0-5.6 BBAAA  No. Mid-Atlantic Ridge     

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  8JAN2021 00:28:44  29.5S  178.8W Mw=6.3  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P:  6JAN2021 130187    30.0S  178.0W 4.0-5.4 AAAAA  No. Kermadec Islands       

 

O:  7JAN2021 16:45:04  32.8S  179.6E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  4JAN2021 130195    33.0S  178.0E 4.0-5.3 BABAA  So. Kermadec Islands       

 

O:  7JAN2021 13:00:25  39.3S  174.5E ML=3.5  EMSC   NORTH ISLAND OF NEW ZEALAND  

P:  4JAN2021 130190    39.0S  175.0E 3.0-4.6 BAAAA  North Island, N.Z.         

P:  7JAN2021 130199    40.0S  174.0E 3.0-4.5 AAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O:  8JAN2021 06:04:15  34.4N  136.3E mb=4.0  EMSC   WESTERN HONSHU, JAPAN        

P:  7JAN2021 129995    34.0N  136.0E 3.5-4.8 AAAAA  Central/So. Honshu Japan   

 

O:  7JAN2021 21:16:49  48.1N  153.3E mb=4.5  EMSC   KURIL ISLANDS                

P: 10JAN2021 130090    48.0N  154.0E 3.5-5.6 BAAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

 

O:  8JAN2021 01:29:34  32.4N  115.2W ML=2.2  EMSC   BAJA CALIFORNIA, MEXICO      

P:  6JAN2021 130026    32.9N  115.6W 2.5-4.6 AAAAA  So. California             

 

O:  7JAN2021 07:58:26  34.3N  117.1W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P:  7JAN2021 130029    33.4N  116.7W 2.5-4.4 AAAAA  So. California             

 

O:  8JAN2021 03:16:36  34.3N  119.7W Ml=2.0  EMSC   SANTA BARBARA CHANNEL, CALIF.

P:  7JAN2021 130030    33.8N  119.7W 2.5-4.3 AAAAA  So. California             

 

O:  7JAN2021 14:46:02  36.0N  120.9W Md=2.1  EMSC   CENTRAL CALIFORNIA           

O:  7JAN2021 17:58:13  36.2N  120.8W Md=2.0  EMSC   CENTRAL CALIFORNIA            

P:  9JAN2021 129986    36.2N  120.8W 2.5-4.8 AAAAA  Central California         

 

O:  7JAN2021 11:44:06  37.4N  121.8W ML=2.8  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O:  7JAN2021 11:44:06  37.4N  121.8W ML=3.0  ANSS   SAN FRANCISCO BAY AREA, CALIF.

P:  7JAN2021 129989    37.2N  122.1W 2.5-5.0 AAAAA  Central California         

 

NEIC reported this earthquake of M 3.0 in Central California was felt with intensity II-III in the area(s) of Central California at Milpitas, San Jose.

 

O:  7JAN2021 13:52:24  37.9N  122.0W Md=2.4  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  7JAN2021 129990    37.9N  122.0W 2.5-4.8 AAAAA  Central California         

 

O:  8JAN2021 03:39:31  38.2N  117.9W ML=2.7  EMSC   NEVADA                       

P: 10JAN2021 129982    38.2N  118.1W 2.5-4.6 AAAAA  California/Nevada area     

 

O:  7JAN2021 12:02:50  38.5N  118.5W ml=2.2  EMSC   NEVADA                       

P:  9JAN2021 129983    38.4N  118.7W 2.5-4.5 AAAAA  California/Nevada area     

 

 

ALASKA

 

O:  7JAN2021 11:43:53  53.2N  150.8W ml=3.9  EMSC   SOUTH OF ALASKA              

P:  6JAN2021 130101    54.8N  149.7W 3.5-4.9 ABAAA  South of Alaska            

 

O:  7JAN2021 15:51:31  54.6N  159.8W ML=3.0  EMSC   SOUTH OF ALASKA              

O:  8JAN2021 01:59:22  54.7N  159.7W mb=4.4  EMSC   SOUTH OF ALASKA              

P:  7JAN2021 130100    54.8N  158.7W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O:  8JAN2021 04:45:10  63.0N  149.6W ML=3.9  EMSC   CENTRAL ALASKA               

O:  8JAN2021 02:02:52  63.3N  149.8W ML=3.6  EMSC   CENTRAL ALASKA               

P:  7JAN2021 130131    63.1N  151.9W 3.2-4.9 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  6JAN2021 21:34:02  49.4N  127.6W MB=3.2  ECAN Port Alice, BC                 

P:  8JAN2021 130093    48.7N  129.0W 2.8-5.1 AAAAA  Vancouver Island area      

 

O:  6JAN2021 20:06:52  51.3N  116.7W MB=3.3  ECAN Golden, BC                     

P:  8JAN2021 130102    52.0N  115.0W 2.0-3.8 AAAAA  Alberta                    

 

ROCKY MOUNTAINS REGION

 

O:  7JAN2021 18:13:49  41.6N  112.4W ML=3.0  EMSC   UTAH                         

P:  7JAN2021 130097    43.2N  111.0W 2.0-3.9 ABAAA  Yellowstone/Wyoming        

 

NEIC reported this earthquake of M 2.7 in Utah was felt with intensity II-III in the area(s) of Utah at Tremonton, Honeyville, Ogden, Salt Lake City, West Jordan and Eagle Mountain.

 

O:  7JAN2021 19:19:03  44.3N  115.1W Ml=2.1  EMSC   SOUTHERN IDAHO               

P:  8JAN2021 130068    44.5N  115.2W 2.0-4.0 AAAAA  Montana/Idaho               

 

O:  7JAN2021 10:10:22  46.9N  112.5W Ml=2.1  EMSC   WESTERN MONTANA              

P:  1JAN2021 129787    46.4N  111.4W 2.0-3.8 CAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O:  7JAN2021 08:51:46  35.0N   97.8W ML=2.1  EMSC   OKLAHOMA                      

P:  6JAN2021 130043    35.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

O:  7JAN2021 02:54:48  49.2N   67.4W MB=1.3  ECAN Matane, QC                     

P:  9JAN2021 130056    49.0N   66.0W 2.0-4.3 AAAAA  E. of Maine                 

 

O:  6JAN2021 11:02:12  40.3N   53.7W MB=4.7  ECAN North Atlantic Ocean           

 

O:  6JAN2021 10:29:27  47.4N   70.4W MB=1.3  ECAN Charlevoix Seismic Zone        

P:  7JAN2021 130065    47.0N   69.0W 2.0-4.3 AAAAA  Maine                      

 

HAWAII

 

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

 

GLOBAL SEISMICITY TURNS ACTIVE

 

EARTHQUAKE SUMMARY FOR JANUARY  6, 2021

 

It was an active in global seismicity. The largest earthquakes in the world occurred in New Guinea and Indonesia with the strongest of these an M 6.1 in the Minahassa, Sulawesi, Indonesia. Moderately strong earthquakes also were registered in Papua New Guinea west of the Solomon Islands (M 5.8) and Southern Sumatra, Indonesia (M 5.5). This activity may have been enhanced by effects from the current geomagnetic storm as most of it is located near the geomagnetic equator. For further details on this storm see the External Effects section of this and previous report.

 

The M 6.1 in Sulawesi, Indonesia was reported with intensity II at Gorontalo and in Luwuk, Sulawesi, Indonesia by NEIC. BMG reported this earthquake with M 6.5 was felt throughout the area of Sulawesi with intensity III-V. An M 6.1 hit within about 100 km of this epicenter on January 19, 2020 but the last of larger magnitude within about 200 km was an M 7.4 on November 16, 2008 about 200 km northwest of today's epicenter. Forecasts 129882 and 129919 had expected today's activity within about 100 km was likely in early January.

 

O:  6JAN2021 20:59:35   0.0N  122.9E Mw=6.1  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  3JAN2021 129882     0.0N  122.0E 4.0-5.4 BAAAA  Celebes Sea                

P:  8JAN2021 129919     1.0S  122.0E 4.0-5.4 AAAAA  Sulawesi area              

P:  8JAN2021 129919     1.0S  124.0E 4.0-5.4 AAAAA  Sulawesi area              

 

The M 5.5 in southern Sumatra was reported by NEIC to have been felt with intensity IV in Bengkulu, Indonesia. BMG reported this event at M 5.8 and noted it was felt with intensity IV-V in Southern Sumatra. This event is the strongest within about 200 km of this epicenter since a pair of events of M 6.8 and 6.9 on August 18, 2020. Forecast 129917 had expected today's event was likely in this area around January 6, 2021.

 

O:  6JAN2021 17:28:35   4.3S  102.7E Mw=5.5  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  5JAN2021 129917     6.0S  103.0E 4.0-5.3 ABAAA  So. of Sumatera            

 

An earthquake of M 4.6 followed the earthquake in Sumatra near the antipode in northern Colombia and may have been enhanced by energy from Sumatra. Forecast 129886 expected the Colombia quake within about 20 km of this epicenter was likely around January 10.

 

O:  7JAN2021 04:37:36   6.8N   73.0W mb=4.6  EMSC   NORTHERN COLOMBIA            

P: 10JAN2021 129886     7.0N   73.0W 4.0-5.4 BAAAA  Colombia                   

 

NEIC reported the M 5.8 in the Solomon Islands was felt with intensity III in Gizo, Western Solomon Islands. The last event in the Solomon Islands within about 200 km of today's epicenter of M>=5.8 was an M 6.3 on April 25, 2020 and before that an M 6.2 on January 26, 2019. Forecast 129918 had expected today's event within about 25 km of the epicenter was likely around January 5, 2021.

 

O:  6JAN2021 16:52:12   7.0S  155.7E mb=5.8  EMSC   BOUGAINVILLE REGION, P.N.G.  

P:  5JAN2021 129918     7.0S  156.0E 4.0-5.4 AAAAA  Solomon Islands             

 

Two earthquakes of M 4.9 each were recorded in the northern Kermadec Islands, of New Zealand today. They were not reported felt in this remote area. These appear to be aftershocks of the M 6.2 that hit the area yesterday. Strong earthquakes in the northern Kermadec Islands tend to occur in clusters and more of this activity is expected in the next several days. Forecast 130167 had expected today's activity within about 15 km of these epicenter was likely around January 6.

 

O: 06JAN2021 16:17:44  29.1S  176.9W mb=4.9  EMSC   KERMADEC ISLANDS REGION

O:  6JAN2021 18:18:37  28.6S  177.6W mb=4.9  EMSC   KERMADEC ISLANDS REGION      

P:  9JAN2021 130167    29.0S  177.0W 4.0-5.4 BAAAA  No. Kermadec Islands       

 

The strongest aftershock to date of the M 6.4 in Croatia of December 29, 2020 was also recorded with M 5.0 and was widely felt with damage at intensity VIII in Croatia at Petrinja and IV in Gvozo, Gradici, Lupoglav, Zagreb, Lupogia, Kozinscak, and Adamovec and II-III in Micevec, Sesvete and Velika Gorica. This is the strongest aftershock to date of the M 6.4 on December 29, 2020. Five earthquake of M>=5 have occurred in Croatia in the past 30 years all with M<5.5 Forecast 130051 had expected enhanced seismicity in Croatia around January 6.

 

O:  6JAN2021 17:01:43  45.4N   16.3E mb=5.0  EMSC   CROATIA                      

P:  6JAN2021 130051    45.0N   16.0E 3.0-5.2 AAAAA  Adriatic Sea               

 

A pair of light earthquakes of M 2.4 and 3.2 occurred in the Yellowstone National Park, Wyoming today. The M 3.2 is the strongest located in the Yellowstone area since an M 3.4 on December 15, 2019 more than a year ago and prior to that an M 3.5 on August 15, 2019. Forecast 130098 had expected this activity was likely around January 4, 2021.

 

O: 06JAN2021 16:27:09  44.7N  110.7W Ml=2.4  EMSC   YELLOWSTONE NAT. PARK, WYOMING

O:  6JAN2021 15:38:33  44.7N  110.7W ML=3.2  ANSS   YELLOWSTONE NAT. PARK, WYOMING

P:  4JAN2021 130098    44.6N  110.8W 2.0-3.9 AAAAA  Yellowstone/Wyoming        

 

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:  7JAN2021 06:01:30  24.4N  121.9E ML=4.0  EMSC   TAIWAN                        

O:  7JAN2021 06:01:30  24.4N  121.9E ML=4.0  TAI    Hualien, Taiwan              

P:  8JAN2021 129972    25.0N  123.0E 4.0-5.4 AAAAA  Ryukyu Islands             

 

CWB reported this earthquake was felt with intensity III in Yilan and II in Hualien Counties, Taiwan.

 

O:  6JAN2021 14:08:50  41.4N   78.9E mb=4.4  EMSC   SOUTHERN XINJIANG, CHINA     

P:  4JAN2021 130063    40.0N   78.0E 4.0-5.6 ABAAA  Kirgizstan/Xinjiang        

P:  9JAN2021 130063    41.0N   77.0E 4.0-5.5 BABAA  Kirgizstan/Xinjiang        

 

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

 

INDONESIA AND PHILIPPINES

 

O:  6JAN2021 16:52:12   7.0S  155.7E mb=5.8  EMSC   BOUGAINVILLE REGION, P.N.G.  

P:  5JAN2021 129918     7.0S  156.0E 4.0-5.4 AAAAA  Solomon Islands            

 

O:  6JAN2021 20:59:35   0.0N  122.9E Mw=6.1  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  3JAN2021 129882     0.0N  122.0E 4.0-5.4 BAAAA  Celebes Sea                

P:  8JAN2021 129919     1.0S  122.0E 4.0-5.4 AAAAA  Sulawesi area              

P:  8JAN2021 129919     1.0S  124.0E 4.0-5.4 AAAAA  Sulawesi area              

 

O:  6JAN2021 17:28:35   4.3S  102.7E Mw=5.5  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  5JAN2021 129917     6.0S  103.0E 4.0-5.3 ABAAA  So. of Sumatera             

 

O:  7JAN2021 01:27:31   6.3N   94.2E mb=5.0  EMSC   NICOBAR ISLANDS, INDIA REGION

P:  7JAN2021 129892     9.0N   93.0E 4.0-5.5 ACAAA  Nicobar Islands            

 

NEIC reported this earthquake of M 5.0 in the Nicobar Islands, India was felt with intensity II-III in the area(s) of Banda Aceh, Indonesia.

BMG reported intensity II-III in Sabang and II in Banda Aceh.

 

CENTRAL AND SOUTH AMERICA

 

O:  6JAN2021 16:38     19.6S   69.3W mb=4.9  GUC    Tarapaca at Camina, Huara; III

P:  3JAN2021 130155    19.0S   69.0W 4.0-5.5 BAAAA  So. Peru/Bolivia           

P:  7JAN2021 130172    20.0S   71.0W 4.0-5.5 AABAA  So. Peru/Bolivia           

 

GUC reported this earthquake was felt with intensity IV in  Tarapaca at Camina, Huara; III in Alto Hospicio, Camina, Iquique, La Tirana, Pica, Pozo Almonte and in Arica at Codpa with II, Chile.

 

O:  7JAN2021 04:37:36   6.8N   73.0W mb=4.6  EMSC   NORTHERN COLOMBIA            

P: 10JAN2021 129886     7.0N   73.0W 4.0-5.4 BAAAA  Colombia                   

 

O:  6JAN2021 23:55:30   9.5N   83.6W ML=4.0  EMSC   COSTA RICA                   

P:  9JAN2021 129926    10.0N   84.0W 3.5-5.1 BAAAA  Caribbean Sea              

 

O:  6JAN2021 14:17:01  14.0N   93.2W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P:  7JAN2021 129928    15.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 06JAN2021 08:39:40  15.1N   94.5W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO

O:  7JAN2021 02:34:44  15.0N   94.2W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P:  9JAN2021 129929    15.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O:  6JAN2021 16:50:27  15.7N   92.1W ML=4.4  EMSC   CHIAPAS, MEXICO              

P:  7JAN2021 129928    15.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 06JAN2021 10:41:53  17.0N   95.4W ML=4.0  EMSC   OAXACA, MEXICO

O: 06JAN2021 19:34:42  17.5N   94.9W ML=4.2  EMSC   VERACRUZ, MEXICO

O:  6JAN2021 10:06:42  16.5N   95.1W ML=4.0  EMSC   OAXACA, MEXICO               

P:  9JAN2021 129929    17.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico             

 

O:  6JAN2021 09:54:38  18.2N   67.2W Md=3.2  EMSC   MONA PASSAGE, PUERTO RICO    

P:  6JAN2021 129953    19.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 06JAN2021 13:59:39  18.4N  101.2W ML=4.1  EMSC   GUERRERO, MEXICO

O:  6JAN2021 20:31:04  18.3N  100.6W ML=4.0  EMSC   GUERRERO, MEXICO             

O:  6JAN2021 12:00:15  18.6N  101.4W ML=4.2  EMSC   MICHOACAN, MEXICO            

P:  2JAN2021 129943    18.0N  102.0W 3.5-5.2 BAAAA  Michoacan, Mexico          

P:  8JAN2021 129943    17.0N  101.0W 3.5-5.5 ABAAA  Michoacan, Mexico          

 

O: 06JAN2021 23:37:10  19.5N   65.2W Md=3.7  EMSC   PUERTO RICO REGION

O:  6JAN2021 14:43:22  19.3N   65.2W Md=3.4  EMSC   PUERTO RICO REGION           

P:  7JAN2021 129959    20.0N   65.0W 3.0-4.8 AAAAA  Bahamas/No. Caribbean      

 

O:  6JAN2021 16:38:40  19.6S   69.3W Mw=4.9  EMSC   TARAPACA, CHILE              

P:  3JAN2021 130155    19.0S   69.0W 4.0-5.5 BAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 4.9 in Tarapaca, Chile was felt with intensity II-III in the area(s) of Tarapaca, Chile and at Iquique and Arica.

 

O:  6JAN2021 11:26:42  23.1S   66.5W mb=4.8  EMSC   JUJUY, ARGENTINA             

P:  5JAN2021 130163    24.0S   67.0W 4.0-5.8 AAAAA  Argentina                   

 

O:  7JAN2021 00:09:05  23.3S   68.5W mb=4.2  EMSC   ANTOFAGASTA, CHILE           

P:  9JAN2021 130165    24.0S   69.0W 4.0-5.8 AAAAA  Coast No. Chile            

 

O:  7JAN2021 02:04:05  24.3S   67.1W ML=4.1  EMSC   SALTA, ARGENTINA             

P:  5JAN2021 130163    24.0S   67.0W 4.0-5.8 AAAAA  Argentina                  

 

O:  6JAN2021 21:17:17  33.6S   62.3W ML=4.5  EMSC   CORDOBA, ARGENTINA           

P:  2JAN2021 130178    35.0S   70.0W 4.0-5.7 BBCAA  Central Chile              

 

AFRICA AND EUROPE

 

O:  7JAN2021 03:54:41  23.7N   36.5E ML=3.7  EMSC   RED SEA                      

P:  3JAN2021 129957    19.0N   39.0E 3.0-4.9 BCBAA  Sudan                      

 

O:  7JAN2021 00:58:14  40.2N   25.1E mb=4.2  EMSC   AEGEAN SEA                    

P:  3JAN2021 129978    39.0N   26.0E 3.0-4.6 BBAAA  Aegean Sea                 

 

O:  6JAN2021 17:01:43  45.4N   16.3E mb=5.0  EMSC   CROATIA                      

P:  6JAN2021 130051    45.0N   16.0E 3.0-5.2 AAAAA  Adriatic Sea               

 

SOUTHWEST PACIFIC

 

O:  6JAN2021 12:28:14  15.3S  176.1W mb=4.3  EMSC   FIJI REGION                  

P:  6JAN2021 130151    15.0S  176.0W 4.0-5.4 AAAAA  Samoa Islands              

 

O:  6JAN2021 21:47:45  17.8S  178.6W mb=5.0  EMSC   FIJI REGION                   

P:  7JAN2021 130158    17.0S  179.0W 4.0-5.5 AAAAA  Tonga Islands              

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 06JAN2021 16:17:44  29.1S  176.9W mb=4.9  EMSC   KERMADEC ISLANDS REGION

O:  6JAN2021 18:18:37  28.6S  177.6W mb=4.9  EMSC   KERMADEC ISLANDS REGION      

P:  9JAN2021 130167    29.0S  177.0W 4.0-5.4 BAAAA  No. Kermadec Islands       

 

O:  6JAN2021 15:35:40  38.4S  177.9E ML=3.9  EMSC   NORTH ISLAND OF NEW ZEALAND  

P:  3JAN2021 130189    38.0S  178.0E 3.0-4.6 BAAAA  North Island, N.Z.         

 

O:  6JAN2021 22:46:16  48.8S  165.1E ML=4.7  EMSC   OFF W. COAST OF S. ISLAND, N.Z

O: 06JAN2021 22:46:15  48.8S  164.9E ML=4.7  GEONET Felt with weak intensity

P:  9JAN2021 130210    46.0S  167.0E 3.0-5.1 BCBAA  Southern S. Isl. N.Z.      

 

GEONET reported this earthquake was felt with weak intensity by two persons.

 

JAPAN AND KURIL ISLANDS

 

O: 06JAN2021 21:07:30  40.0N  144.3E ML=5.1  EMSC   OFF EAST COAST OF HONSHU, JAPAN

O:  6JAN2021 19:13:27  39.9N  143.4E mb=4.9  EMSC   OFF EAST COAST OF HONSHU, JAPA

P:  6JAN2021 130058    40.0N  143.0E 3.5-5.8 AAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  6JAN2021 21:03:59  31.6N  116.0W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

P:  9JAN2021 130026    31.9N  116.3W 2.5-4.6 BAAAA  So. California             

 

NEIC reported this earthquake of M 3.4 in Baja California, Mexico was felt with intensity II-III in the area(s) of Baja California, Mexico at Ensenada.

 

O:  6JAN2021 20:46:44  33.7N  116.7W Ml=2.5  EMSC   SOUTHERN CALIFORNIA          

P:  7JAN2021 130029    33.4N  116.7W 2.5-4.4 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.5 in Idyllwild, California was felt with intensity II-III in the area(s) of Idyllwild, California, Palm Springs, and Orange.

 

O:  6JAN2021 10:35:54  35.4N  117.9W ML=2.6  EMSC   SOUTHERN CALIFORNIA          

O: 06JAN2021 08:38:22  35.7N  117.5W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

P:  5JAN2021 130034    35.8N  117.6W 2.5-4.3 AAAAA  So. California             

 

O:  7JAN2021 06:11:27  35.8N  121.2W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P:  7JAN2021 130020    35.7N  121.2W 2.5-4.8 AAAAA  Off So. California         

 

O:  6JAN2021 13:14:18  36.6N  121.2W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P:  7JAN2021 129988    36.7N  121.4W 2.5-5.0 AAAAA  Central California         

 

O:  6JAN2021 23:49:19  37.2N  120.4W Md=2.2  EMSC   CENTRAL CALIFORNIA            

P:  4JAN2021 129987    36.6N  120.7W 2.5-4.7 AAAAA  Central California         

 

O:  7JAN2021 05:44:14  37.9N  118.6W ml=2.1  EMSC   CENTRAL CALIFORNIA           

O: 07JAN2021 04:51:42  38.2N  117.9W ml=2.0  EMSC   NEVADA

P:  5JAN2021 129981    37.4N  118.6W 2.5-4.7 AAAAA  California/Nevada area     

 

O:  6JAN2021 07:43:43  38.0N  122.0W Md=2.7  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  7JAN2021 129990    37.9N  122.0W 2.5-4.8 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in San Francisco Bay, California was felt with intensity II-III in the area(s) of San Francisco Bay, California at Concord, Pleasant Hill, Walnut Creek, Lafayette, Martinez, Pittsburg.

 

O:  7JAN2021 06:04:08  38.2N  117.9W ml=2.0  EMSC   NEVADA                        

O: 07JAN2021 04:51:42  38.2N  117.9W ml=2.0  EMSC   NEVADA

P:  5JAN2021 129982    38.0N  118.0W 2.5-4.6 AAAAA  California/Nevada area     

 

ALASKA

 

O:  6JAN2021 22:43:31  60.2N  152.6W ML=3.2  EMSC   SOUTHERN ALASKA              

P:  4JAN2021 130126    60.0N  153.5W 3.2-5.1 AAAAA  Central Alaska             

 

O:  6JAN2021 10:58:50  63.2N  150.6W ML=3.2  EMSC   CENTRAL ALASKA               

P:  7JAN2021 130131    63.1N  151.9W 3.2-4.9 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  6JAN2021 04:35:57  62.0N  126.4W MB=3.6  ECAN Tungsten, NT                   

O:  5JAN2021 02:35:51  62.2N  124.5W MB=3.8  ECAN Wrigley, NT                    

P:  4JAN2021 130135    62.1N  124.2W 2.5-4.2 AAAAA  Northwest Terr., Canada    

 

O:  3JAN2021 07:58:11  48.8N  114.6W MB=3.3  ECAN Kalispell, MT                  

P:  4JAN2021 130070    48.0N  115.0W 2.0-4.1 AAAAA  Montana/Idaho              

 

ROCKY MOUNTAINS REGION

 

O:  7JAN2021 04:55:33  31.6N  104.3W ML=3.2  EMSC   WESTERN TEXAS                

P:  6JAN2021 130024    32.6N  104.6W 2.0-4.1 AAAAA  SW U.S.A                   

 

O:  7JAN2021 03:25:57  32.3N  101.8W mb=2.4  EMSC   WESTERN TEXAS                

P:  2JAN2021 130024    32.5N  101.6W 2.0-4.2 BAAAA  SW U.S.A                   

 

O:  6JAN2021 19:05:08  44.5N  115.2W Ml=2.8  EMSC   SOUTHERN IDAHO               

P:  4JAN2021 130068    44.6N  115.0W 2.0-4.0 AAAAA  Montana/Idaho              

 

O: 06JAN2021 16:27:09  44.7N  110.7W Ml=2.4  EMSC   YELLOWSTONE NAT. PARK, WYOMING

O:  6JAN2021 15:38:33  44.7N  110.7W ML=2.6  EMSC   YELLOWSTONE NAT. PARK, WYOMING

P:  4JAN2021 130098    44.6N  110.8W 2.0-3.9 AAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O:  7JAN2021 00:26:30  35.1N   96.3W mb=2.2  EMSC   OKLAHOMA                     

P:  6JAN2021 130043    35.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 2.8 in Oklahoma was felt with intensity II-III in the area(s) of Oklahoma at Holdenville.

 

O:  6JAN2021 23:12:05  36.6N   89.7W Md=2.0  EMSC   SOUTHEASTERN MISSOURI        

P:  2JAN2021 130008    36.7N   89.7W 2.0-3.9 BAAAA  New Madrid area            

 

O: 05JAN2021 19:51:07  47.4N   70.4W MB=1.0  ECAN Charlevoix Seismic Zone

O: 05JAN2021 12:58:34  47.6N   70.4W MB=1.4  ECAN CHARLEVOIX SEISMIC ZONE      

O: 04JAN2021 11:58:31  47.3N   70.5W MB=2.0  ECAN CHARLEVOIX SEISMIC ZONE      

O: 02JAN2021 12:49:01  47.3N   70.5W MB=1.4  ECAN CHARLEVOIX SEISMIC ZONE      

O: 02JAN2021 16:44:57  47.4N   70.1W MB=1.3  ECAN CHARLEVOIX SEISMIC ZONE      

O:  3JAN2021 06:12:45  47.6N   70.0W MB=1.3  ECAN CHARLEVOIX SEISMIC ZONE        

P:  2JAN2021 130066    47.0N   70.0W 2.0-4.0 AAAAA  Maine                      

 

O:  4JAN2021 18:50:50  49.2N   66.7W MB=2.4  ECAN Cap-Chat, QC                   

P:  2JAN2021 130066    49.3N   67.5W 2.0-4.2 AAAAA  Maine                      

 

O:  4JAN2021 06:24:57  46.2N   65.1W MB=2.2  ECAN Salisbury, NB                  

P:  4JAN2021 130056    46.0N   66.0W 2.0-4.1 AAAAA  E. of Maine                 

 

O:  3JAN2021 20:06:13  65.2N   88.5W MB=3.4  ECAN Repulse Bay, NU                

P:  5JAN2021 130136    65.0N   86.0W 2.5-4.3 AAAAA  Nunavit/Hudson Bay, Canada 

 

O:  2JAN2021 15:32:26  70.4N   71.3W MB=2.4  ECAN Clyde River, NU                 

P:  4JAN2021 130139    71.0N   75.0W 2.5-3.9 AAAAA  Baffin/Davis Strait Canada 

 

O:  2JAN2021 02:35:38  46.2N   77.1W MB=1.7  ECAN Deep River, ON                 

P:  3JAN2021 130074    45.0N   75.0W 2.0-3.8 ABBAA  New York State             

 

O:  1JAN2021 15:03:05  46.7N   64.7W MB=1.7  ECAN Richibucto, NB                 

P:  4JAN2021 130056    46.0N   66.0W 2.0-4.1 BAAAA  E. of Maine                

 

O:  2JAN2021 10:27:05  73.2N   95.5W MB=2.2  ECAN Fort Ross, NU                  

O:  3JAN2021 11:08:19  75.7N  100.0W MB=2.2  ECAN Polaris, NU                    

P:  5JAN2021 130138    76.0N  106.0W 4.0-5.4 AAAAA  Arctic Ocean Region        

 

HAWAII

 

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