RISE IN VOLCANISM CONTINUES IN GUATEMALA

 

EARTHQUAKE SUMMARY FOR FEBRUARY 21, 2021

 

Three volcanoes were in eruption in Guatemala today, having begun this eruptive behavior in mid-February. These eruptions were strong and occurred at Volcan de Fuego, Pacaya and Santa Maria. These volcanoes are at 103 degrees from the M 7.7 in the Loyalty Islands of February 10 and began erupting several days after that event. They are also near that distance from the M 7.1 in Honshu, Japan of April 13. They were probably promoted into eruption by energy from the Loyalty Islands. Similar eruptions have occurred this week at Merapi, Java, Indonesia and in Etna, Sicily, Italy.

 

A moderate earthquake of M 3.8 shook a large section of Central California around San Francisco today. NEIC reported shaking with intensity II-III in Central California at Gilroy, San Martin, Morgan Hill, San Juan Bautista, Aromas, Watsonville, Hollister, San Jose, Salinas, among other communities within about 100 km of the epicenter. This follows a series of light earthquakes felt in the area over the past several days. Today's event of M 3.8 is the largest in the area south of San Francisco since an M 4.2 on January 17 and January 2, 2021 about 50 km south of this epicenter. The of larger magnitude within about 50 km of this epicenter was an M 3.9 on January 2, 2020. Forecast 131549 had expected today's event was likely within about 10 km of this epicenter around February 24. San Francisco is located at the fifth node (72 degrees) from the M 7.1 in Honshu, Japan of February 13 and had been expected, in this summary,  to see enhanced seismicity at this time. Other activity at this distance from Japan today occurred in Tonga and Fiji.  It is also at 103 degrees from the Mindanao, Philippines quake of January 21, 2021 and was probably also promoted from that source.

 

O: 22FEB2021 01:38:12  37.1N  121.5W ML=3.6  EMSC   NORTHERN CALIFORNIA          

O: 22FEB2021 01:38:13  37.0N  121.6W ML=3.8  ANSS   NORTHERN CALIFORNIA          

P: 24FEB2021 131549    37.1N  121.5W 2.5-4.9 AAAAA  Central California         

 

O: 22FEB2021 05:41:06  37.8N  122.0W Md=2.3  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 20FEB2021 131550    37.9N  122.0W 2.5-4.6 AAAAA  Central California         

 

The strongest earthquake in the U.S. or Canada today was an M 4.8 in the Andreanof Islands of Alaska. This is probably an aftershock of an M 5.6 in the Andreanof Islands which occurred on February 19. Forecast 131652 expected today's event was likely around February 23 within about 100 km of this epicenter.

 

O: 21FEB2021 15:02:33  50.9N  179.3W mb=4.8  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 23FEB2021 131652    51.6N  179.6W 3.5-5.1 AAAAA  Andreanoff Isls, Aleutians 

 

The strongest earthquake in the world today was an M 5.4 aftershock in the area southeast of the Loyalty Islands. This follows the M 7.7 in this region of February 10 and is not an unusual earthquake for this time in the aftershocks sequence. Forecast 131712 had expected today's activity in the Loyalty Islands around February 21-23.

 

O: 21FEB2021 17:14:29  22.7S  172.1E mb=4.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 21FEB2021 19:36:55  22.7S  171.5E mb=4.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 21FEB2021 20:36:47  22.9S  172.2E mb=4.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 22FEB2021 05:17:36  23.0S  172.9E Mw=5.4  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 21FEB2021 22:54:34  23.3S  171.5E Mw=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

P: 21FEB2021 131712    22.0S  170.0E 4.0-5.5 ABAAA  Loyalty Islands            

P: 23FEB2021 131712    23.0S  171.0E 4.0-5.3 BAAAA  Loyalty 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: 22FEB2021 01:50:49  22.6N  121.5E mb=4.7  EMSC   TAIWAN REGION                

O: 22FEB2021 01:50:49  22.6N  121.6E ML=5.2  TAI    Hualien, Taiwan              

P: 20FEB2021 131536    23.0N  121.0E 4.0-5.6 AAAAA  Taiwan                      

P: 24FEB2021 131535    22.0N  122.0E 4.0-5.5 AAAAA  Taiwan                     

 

WCB reported this earthquake was felt with intensity III in Taitung, II in Pingtung, Tainan, Yunlin, and I in Hualien, Kaohsiung, Chiayi, Nantou and Changhua Counties, Taiwan.

 

INDONESIA AND PHILIPPINES

 

O: 21FEB2021 21:41:37   1.5N  127.2E ML=4.4  EMSC   HALMAHERA, INDONESIA         

P: 21FEB2021 131448     1.0N  127.0E 4.0-5.6 AAAAA  Halmahera                  

 

O: 22FEB2021 03:00:24   2.4N  127.3E mb=5.1  EMSC   MOLUCCA SEA                  

P: 20FEB2021 131450     3.0N  126.0E 4.0-5.6 AAAAA  Mindanao, Philippines      

P: 21FEB2021 131448     1.0N  127.0E 4.0-5.6 ABAAA  Halmahera                  

 

O: 21FEB2021 21:10:43   4.4S  102.1E mb=4.9  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 21FEB2021 131475     4.0S  102.0E 4.0-5.4 AAAAA  So. of Sumatera            

 

O: 21FEB2021 23:40:44   4.9N  127.5E mb=4.5  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 21FEB2021 131448     5.0N  127.0E 4.0-5.4 AAAAA  Halmahera                   

 

O: 21FEB2021 20:59:17   5.8S  101.3E ML=4.8  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P: 21FEB2021 131475     4.0S  102.0E 4.0-5.4 ABAAA  So. of Sumatera            

P: 22FEB2021 131476     6.0S  103.0E 4.0-5.8 AABAA  So. of Sumatera             

 

O: 22FEB2021 03:50:39   6.3S  104.2E mb=4.6  EMSC   SUNDA STRAIT, INDONESIA      

P: 18FEB2021 131473     6.0S  105.0E 4.0-5.6 BAAAA  So. of Java                

P: 22FEB2021 131476     6.0S  103.0E 4.0-5.8 AAAAA  So. of Sumatera            

 

O: 21FEB2021 18:52:12   6.5N  126.8E mb=4.3  EMSC   MINDANAO, PHILIPPINES        

P: 21FEB2021 131448     5.0N  127.0E 4.0-5.4 ABAAA  Halmahera                  

 

O: 21FEB2021 14:56:34   7.5S  106.6E ML=4.7  EMSC   JAVA, INDONESIA              

P: 21FEB2021 131473     7.0S  106.0E 4.0-5.6 AAAAA  So. of Java                

 

O: 21FEB2021 14:01:04   8.8S  118.1E mb=4.5  EMSC   SUMBAWA REGION, INDONESIA    

P: 19FEB2021 131479     8.0S  119.0E 4.0-5.5 AAAAA  Sumbawa Island area        

 

O: 22FEB2021 04:44:59   8.8S  123.5E mb=4.9  EMSC   FLORES REGION, INDONESIA     

P: 21FEB2021 131460     9.0S  124.0E 4.0-5.4 AAAAA  Flores Island area         

 

CENTRAL AND SOUTH AMERICA

 

O: 21FEB2021 07:21:03   3.1S   77.8W ML=4.0  EMSC   PERU-ECUADOR BORDER REGION   

P: 19FEB2021 131459     4.0S   80.0W 4.0-5.6 AABAA  Ecuador                    

 

O: 21FEB2021 23:52:02   9.3S   74.9W ML=4.0  EMSC   CENTRAL PERU

O: 21FEB2021 18:09:34   9.3S   75.0W ML=4.5  EMSC   CENTRAL PERU                 

P: 26FEB2021 131692    10.0S   75.0W 3.5-5.1 BAAAA  Brazil                     

 

O: 21FEB2021 09:00:39  18.3N   68.0W Md=3.4  EMSC   MONA PASSAGE, DOMINICAN REPUBL

O: 21FEB2021 22:14:27  18.4N   68.8W Md=3.7  EMSC   DOMINICAN REPUBLIC

P: 17FEB2021 131182    19.0N   69.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 21FEB2021 23:05:59  18.5N   73.5W ML=3.0  EMSC   HAITI REGION                 

P: 20FEB2021 131519    19.0N   73.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

O: 21FEB2021 08:46:45  18.5N   64.1W Md=3.5  EMSC   VIRGIN ISLANDS REGION

O: 21FEB2021 23:56:26  18.8N   64.3W ML=3.1  EMSC   VIRGIN ISLANDS REGION        

P: 20FEB2021 131496    19.0N   64.0W 3.0-5.1 AAAAA  Leeward Islands            

 

O: 21FEB2021 08:43:08  19.2N   66.5W Md=3.2  EMSC   PUERTO RICO REGION            

P: 19FEB2021 131510    18.0N   67.0W 3.4-5.0 ABAAA  Puerto Rico                

 

O: 21FEB2021 10:38:16  20.1N   71.0W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION

O: 21FEB2021 08:03:21  20.2N   70.7W ML=3.5  EMSC   DOMINICAN REPUBLIC REGION

O: 21FEB2021 08:12:58  20.2N   70.6W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION

O: 21FEB2021 10:15:04  20.1N   70.8W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P: 24FEB2021 131518    20.0N   69.0W 3.0-4.9 BABAA  Bahamas/No. Caribbean      

P: 28FEB2021 131519    20.0N   71.0W 3.0-4.6 CAAAA  Bahamas/No. Caribbean      

 

O: 21FEB2021 17:40:23  31.5S   71.8W ML=4.0  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 22FEB2021 131723    32.0S   72.0W 4.0-6.1 AAAAA  Central Chile              

 

O: 21FEB2021 11:56:47  35.7S   72.9W mb=4.0  EMSC   OFFSHORE MAULE, CHILE        

P: 24FEB2021 131724    35.0S   72.0W 4.0-5.4 BAAAA  Central Chile              

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O: 21FEB2021 17:14:29  22.7S  172.1E mb=4.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 21FEB2021 19:36:55  22.7S  171.5E mb=4.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 21FEB2021 20:36:47  22.9S  172.2E mb=4.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 22FEB2021 05:17:36  23.0S  172.9E Mw=5.4  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 21FEB2021 22:54:34  23.3S  171.5E Mw=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

P: 21FEB2021 131712    22.0S  170.0E 4.0-5.5 ABAAA  Loyalty Islands            

P: 23FEB2021 131712    23.0S  171.0E 4.0-5.3 BAAAA  Loyalty Islands            

 

O: 21FEB2021 23:19:04  17.9S  175.1W mb=4.7  EMSC   TONGA                        

P: 23FEB2021 131705    17.0S  175.0W 4.0-5.5 AAAAA  Tonga Islands              

 

O: 21FEB2021 21:34:58  21.0S  173.9W mb=5.0  EMSC   TONGA                        

P: 16FEB2021 131392    22.0S  175.0W 4.0-5.6 BAAAA  Tonga Islands              

 

O: 21FEB2021 08:04:36  22.6S  179.6W mb=4.8  EMSC   SOUTH OF FIJI ISLANDS        

P: 27FEB2021 131720    21.0S  179.0W 4.0-5.8 CBAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 22FEB2021 04:21:15  27.7N   18.2W ML=2.4  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 22FEB2021 131521    28.0N   16.0W 3.0-4.9 AABAA  Canary Islands             

 

O: 21FEB2021 12:08:23  44.6S   81.5W mb=4.7  EMSC   WEST CHILE RISE              

P: 16FEB2021 131421    43.0S   83.0W 4.0-5.5 BBAAA  Chile Rise                 

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 21FEB2021 09:15:48  32.4S  179.0E ML=3.8  EMSC   SOUTH OF KERMADEC ISLANDS    

O: 22FEB2021 05:35:21  34.0S  179.5E ML=3.7  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 24FEB2021 131729    33.0S  179.0E 3.0-4.7 AAAAA  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: 22FEB2021 02:23:30  37.7N  141.8E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 20FEB2021 131575    37.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

O: 22FEB2021 01:55:56  43.1N  145.8E mb=4.4  EMSC   HOKKAIDO, JAPAN REGION       

P: 24FEB2021 131614    43.0N  146.0E 3.5-5.5 AAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 22FEB2021 00:28:09  34.0N  116.8W ML=3.0  EMSC   SOUTHERN CALIFORNIA          

O: 22FEB2021 00:28:09  34.0N  116.8W ML=3.3  ANSS   SOUTHERN CALIFORNIA          

P: 22FEB2021 131585    34.3N  116.5W 2.5-4.4 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.3 in Southern California was felt with intensity II-III in the area(s) of Southern California at Banning, Cabazon, Forest Falls, White Water, Beaumont, Yucaipa, Morongo Valley, Calimesa, Idyllwild and Palm Springs.

 

O: 21FEB2021 13:44:40  36.0N  117.3W ML=2.5  EMSC   CENTRAL CALIFORNIA           

P: 21FEB2021 131542    36.2N  117.9W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 21FEB2021 12:32:38  36.2N  118.1W ML=2.1  EMSC   CENTRAL CALIFORNIA           

P: 17FEB2021 131208    36.1N  118.1W 2.5-4.3 BAAAA  California/Nevada area     

 

O: 21FEB2021 15:34:40  36.8N  121.3W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 19FEB2021 131549    36.8N  121.3W 2.5-5.1 AAAAA  Central California         

 

O: 22FEB2021 01:38:12  37.1N  121.5W ML=3.6  EMSC   NORTHERN CALIFORNIA          

P: 24FEB2021 131549    37.1N  121.5W 2.5-4.9 AAAAA  Central California         

 

O: 22FEB2021 05:41:06  37.8N  122.0W Md=2.3  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 20FEB2021 131550    37.9N  122.0W 2.5-4.6 AAAAA  Central California         

 

O: 22FEB2021 02:14:16  38.2N  118.1W ml=2.3  EMSC   NEVADA

O: 21FEB2021 15:02:09  38.6N  118.4W ML=2.9  EMSC   NEVADA

O: 21FEB2021 21:22:20  38.2N  118.5W ML=2.9  EMSC   NEVADA                       

P: 22FEB2021 131546    38.2N  118.8W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 21FEB2021 18:54:18  38.8N  122.8W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 18FEB2021 131551    38.9N  122.8W 2.5-4.7 BAAAA  Central California         

 

ALASKA

 

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

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 21FEB2021 10:29:05  43.6N  128.1W ML=3.4  EMSC   OFF COAST OF OREGON

O: 21FEB2021 14:50:00  43.5N  128.4W ML=3.5  EMSC   OFF COAST OF OREGON          

P: 24FEB2021 131636    44.4N  129.3W 3.0-4.4 BAAAA  Off Coast of Oregon        

 

O: 21FEB2021 21:47:30  47.6N  121.7W Ml=2.1  EMSC   WASHINGTON                   

P: 27FEB2021 131645    47.5N  121.8W 2.0-4.1 CAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 21FEB2021 15:51:43  31.1N  103.3W ML=2.8  EMSC   WESTERN TEXAS                

P: 19FEB2021 131579    31.5N  103.6W 2.0-4.3 AAAAA  SW U.S.A                   

 

O: 22FEB2021 01:54:43  31.7N  104.4W mb=2.7  EMSC   WESTERN TEXAS                

P: 27FEB2021 131579    32.5N  104.6W 2.0-4.3 BAAAA  SW U.S.A                   

 

O: 21FEB2021 14:08:40  34.4N  107.0W ML=2.8  EMSC   NEW MEXICO                   

P: 20FEB2021 131555    37.0N  105.2W 2.0-4.3 ACBAA  Colorado area              

 

NEIC reported this earthquake of M 2.8 in Central New Mexico was felt with intensity II-III in the area(s) of New Mexico at Bosque.

 

O: 21FEB2021 13:01:44  40.7N  112.0W ML=2.2  EMSC   WASATCH FRONT URBAN AREA, UTAH

P: 22FEB2021 131602    39.8N  112.7W 2.0-3.9 AAAAA  Utah area                  

 

EASTERN U.S./CANADA

 

O: 22FEB2021 05:19:58  34.5N   97.5W mb=2.5  EMSC   OKLAHOMA

O: 22FEB2021 01:28:49  34.4N   97.4W ML=2.2  EMSC   OKLAHOMA                     

O: 21FEB2021 09:32:50  34.4N   97.5W ML=2.1  EMSC   OKLAHOMA                      

P: 23FEB2021 131594    35.0N   97.0W 2.0-4.0 AAAAA  Southern Plains            

 

O: 21FEB2021 08:23:38  47.0N   66.6W ML=2.5  EMSC   NEW BRUNSWICK, CANADA        

P: 24FEB2021 131611    46.0N   66.0W 2.0-4.1 BAAAA  E. of Maine                 

 

HAWAII

 

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

MODERATE EARTHQUAKES AT HIGH LATITUDES

 

EARTHQUAKE SUMMARY FOR FEBRUARY 20, 2021

 

A series of moderate earthquakes occurred today at high latitudes. The largest earthquakes in the world today were of M 5.1-5.4. These occurred off the coast of Oregon (M 5.1), in Southwestern Siberia, Russia (M 5.1), the Kuril Islands (M 5.4). These may have been enhanced by effects associated with the strongest geomagnetic storm since November 23, 2020 as described in this and previous issues of this summary:

 

"The geomagnetic field saw active to stormy conditions today. The AP level was 20.  High latitude geomagnetic field  saw strong storms with AP 40. This storm continues the strongest at high latitudes since AP at high latitudes reached 45 on November 22, 2020. Strong excursions in the geomagnetic field can be accompanied by enhanced seismicity at high latitudes and near the geomagnetic equator in the next several days." (February 19-21, 2021)

 

The strongest earthquake in the U.S. or Canada today was an M 4.9-5.1 off the coast of Oregon. NEIC reported this earthquake of M 5.1 off the coast of Oregon  was felt with intensity II-III in the area(s) of Oregon at Stayton, Port Orford, Toledo and Springfield.  This is an active area, the last earthquake with M>=5.1 within about 200 km of this epicenter was an M 5.7 on December 29, 2020 and prior to that an M 5.9 on September 5, 2019. Forecast 131636 had expected this event was likely in this area around February 18. Like recent activity in the Fiji Islands and in the Loyalty Islands, this event is at the 11th node (65.5 degrees) from the Honshu earthquake of M 7.1 in Japan of February 13 and may have been promoted by energy from that source.

 

O: 20FEB2021 21:22:35  43.7N  128.0W mb=4.9  EMSC   OFF COAST OF OREGON

O: 20FEB2021 21:15:54  43.6N  127.9W Mw=5.1  EMSC   OFF COAST OF OREGON          

P: 18FEB2021 131636    44.3N  129.4W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

The strongest of today's events was an M 5.4 in the Kuril Islands of northern Japan off the eastern coast of Hokkaido. This is the strongeset earthquake in the Kuril Islands within about 200 km of this epicenter in more than a year - since an M 6.6 on January 28, 2020 and prior to that an M 5.7 on May 14, 2019. Forecast 131615 had expected today's activity was likely within about 75 km around February 18. This event is at the fifth node (72 degrees) from the M 7.7 in the Loyalty Islands of February 10 and was probably promoted by energy from that source.

 

O: 20FEB2021 13:23:27  43.3N  146.9E mb=5.4  EMSC   KURIL ISLANDS                

P: 18FEB2021 131615    44.0N  147.0E 3.5-5.4 AAAAA  Hokkaido, Japan            

 

The M 5.1 in southwestern Siberia, Russia was reported felt lightly in that region today. It was followed by an M 4.6 about two minutes later. An M 6.7 hit about 300 km southeast of this epicenter on January 11, 2021 but the last event of M>=5.1 within about 250 km was an M 5.1 on June 6, 2012, an aftershock of an M 6.7 on February 26, 2012. Forecast 131339 had expected an enhanced regional event within about 150 km of today's epicenter was likely around February 17.

 

NEIC reported this earthquake of M 5.1 in Southwestern Siberia, Russia was felt with intensity II-III in the area(s) of Southwestern Siberia, Russia at Kyzyl Tyva, Shushenskye and Zelenyy Bor, Krasnojarsi, Russia. This activity is at about 100 degrees from the M 7.7 of February 10 in the Loyalty Islands and may have been promoted by energy from that event.

 

O: 21FEB2021 01:39:02  52.3N   97.3E mb=4.6  EMSC   SOUTHWESTERN SIBERIA, RUSSIA

O: 21FEB2021 01:37:10  52.3N   97.6E mb=5.1  EMSC   SOUTHWESTERN SIBERIA, RUSSIA 

P: 17FEB2021 131339    51.0N   98.0E 3.0-4.4 BBAAA  So. Siberia                

 

A moderate earthquake was felt in South Island, New Zealand today. This was an M 4.2-4.3 in the general area of Christchurch, South Island, New Zealand. GEONET reported this earthquake was felt with moderate intensity in the area of Christchurch, South Island, New Zealand. 112 felt reports were published including 78 of weak and 28 of light shaking;  7 moderate; 0 strong; 0 severe and 0 extreme shaking in northern South Island. Forecast 131736 had expected this event within about 100 km was likely around February 19.

 

O: 20FEB2021 07:33:27  42.9S  172.3E ML=4.2  EMSC   SOUTH ISLAND OF NEW ZEALAND  

O: 20FEB2021 07:33:27  42.9S  172.2E MS=4.3  GEONET Felt with moderate intensity

P: 19FEB2021 131736    43.0S  171.0E 3.0-5.0 AAAAA  So. Island, N.Z.           

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: 21FEB2021 01:39:02  52.3N   97.3E mb=4.6  EMSC   SOUTHWESTERN SIBERIA, RUSSIA

O: 21FEB2021 01:37:10  52.3N   97.6E mb=5.1  EMSC   SOUTHWESTERN SIBERIA, RUSSIA 

P: 17FEB2021 131339    51.0N   98.0E 3.0-4.4 BBAAA  So. Siberia                

 

O: 21FEB2021 00:59:37  55.0N  160.9E mb=4.6  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 22FEB2021 131655    54.0N  161.0E 4.0-5.8 AAAAA  E. of Kamchatka            

 

INDONESIA AND PHILIPPINES

 

O: 20FEB2021 10:04:33   0.8S  131.0E mb=4.6  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 17FEB2021 131153     2.0S  133.0E 4.0-5.6 BBBAA  West Irian, PNG            

 

O: 20FEB2021 16:46:43   1.4N  126.9E ML=4.5  EMSC   MOLUCCA SEA                  

O: 20FEB2021 08:47:45   2.8N  128.1E ML=4.4  EMSC   HALMAHERA, INDONESIA         

P: 20FEB2021 131450     3.0N  126.0E 4.0-5.6 AABAA  Mindanao, Philippines      

 

O: 21FEB2021 04:24:31   3.3S  101.5E ML=4.2  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 21FEB2021 131475     4.0S  102.0E 4.0-5.4 AAAAA  So. of Sumatera            

 

O: 20FEB2021 20:19:54   4.7S  153.4E mb=4.9  EMSC   NEW IRELAND REGION, P.N.G.   

P: 17FEB2021 131135     4.0S  153.0E 4.0-5.4 BAAAA  New Britain                

 

NEIC reported this earthquake of M 4.9 in New Britain was felt with intensity II-III in the area(s) of New Britain at Kokopo, Papua New Guinea.

 

O: 20FEB2021 11:57:15   5.4S  146.3E mb=4.6  EMSC   EASTERN NEW GUINEA REG., P.N.G

P: 22FEB2021 131465     5.0S  147.0E 4.0-5.3 AAAAA  New Ireland                

 

O: 20FEB2021 22:44:16   8.3S  119.5E mb=4.6  EMSC   FLORES REGION, INDONESIA     

O: 20FEB2021 14:29:12   8.3S  119.7E mb=4.2  EMSC   FLORES REGION, INDONESIA

P: 19FEB2021 131479     8.0S  119.0E 4.0-5.5 AAAAA  Sumbawa Island area        

 

O: 20FEB2021 14:38:06  18.3N  146.4E mb=4.7  EMSC   PAGAN REG., N. MARIANA ISLANDS

O: 21FEB2021 00:41:14  18.4N  146.6E mb=4.9  EMSC   PAGAN REG., N. MARIANA ISLANDS

P: 22FEB2021 131506    18.0N  146.0E 4.0-5.3 AAAAA  No. Marianas               

 

 

CENTRAL AND SOUTH AMERICA

 

O: 21FEB2021 06:50:44  16.3N   99.5W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 23FEB2021 131509    17.0N  100.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 20FEB2021 20:01:30  18.0N   97.3W ML=4.1  EMSC   OAXACA, MEXICO               

P: 22FEB2021 131508    18.0N   97.0W 3.5-5.1 AAAAA  Oaxaca, Mexico             

 

O: 20FEB2021 19:49:50   9.1S   74.8W mb=5.0  EMSC   CENTRAL PERU                 

P: 27FEB2021 131456     9.0S   75.0W 3.5-4.9 CAAAA  Brazil                     

 

NEIC reported this earthquake of M 5.0 in Central Peru was felt with intensity II-III in the area(s) of Central Peru at Pucallpa.

 

O: 21FEB2021 01:25:03  18.8N   69.5W ML=3.2  EMSC   DOMINICAN REPUBLIC           

O: 21FEB2021 06:24:35  19.2N   69.6W ML=3.3  EMSC   DOMINICAN REPUBLIC

P: 24FEB2021 131511    19.0N   69.0W 3.4-5.4 BAAAA  Puerto Rico                

 

O: 20FEB2021 10:07:35  21.2S   68.8W mb=4.6  EMSC   TARAPACA, CHILE

O: 21FEB2021 00:28:47  21.1S   68.6W mb=4.5  EMSC   ANTOFAGASTA, CHILE           

P: 19FEB2021 131711    22.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

 

O: 21FEB2021 00:14:20  24.2S   67.0W mb=4.8  EMSC   SALTA, ARGENTINA             

P: 19FEB2021 131709    23.0S   67.0W 4.0-5.8 ABAAA  Argentina                  

 

NEIC reported this earthquake of M 4.8 in Argentina was felt with intensity II-III in the area(s) of Argentina in Tucuman.

 

O: 20FEB2021 07:11:41  37.4S   72.3W mb=4.5  EMSC   BIO-BIO, CHILE               

O: 20FEB2021 07:11     37.5S   72.3W mb=4.6  GUC    Biobio at Los Angeles; III in

P: 14FEB2021 131400    37.0S   74.0W 4.0-5.6 CABAA  Central Chile              

P: 24FEB2021 131725    39.0S   73.0W 4.0-5.5 BBAAA  Central Chile               

 

GUC reported this earthquake was felt with intensity IV in  Biobio at Los Angeles; III in Chiguayante, Talcahuano; in Nuble with IV in Yungay; III in Chillan, Quinhoe, Trehuaco, and II in Ranquil; in La Araucania with III in Angol, Collipulli, Lautaro, Padre las Casas, Temuco, Chile.

NEIC reported this earthquake of M 4.5 in Bio-Bio Chile  was felt with intensity IV in the area(s) of Bio-Bio Chile at Los Angeles, and Chilan.

 

AFRICA AND EUROPE

 

O: 20FEB2021 17:00:44  35.9N   28.0E mb=4.3  EMSC   DODECANESE ISLANDS, GREECE   

P: 19FEB2021 131597    35.0N   28.0E 3.5-5.3 AAAAA  Turkey                     

 

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

 

SOUTHWEST PACIFIC

 

O: 20FEB2021 20:13:00  12.3S  166.5E mb=4.8  EMSC   SANTA CRUZ ISLANDS           

P: 21FEB2021 131706    13.0S  167.0E 4.0-5.4 AAAAA  Vanuatu Islands            

 

O: 20FEB2021 17:25:23  17.5S  167.8E mb=5.1  EMSC   VANUATU

O: 20FEB2021 15:49:06  17.6S  167.5E mb=4.8  EMSC   VANUATU

O: 20FEB2021 21:44:35  16.3S  166.1E mb=4.8  EMSC   VANUATU                      

O: 21FEB2021 04:54:32  16.6S  168.7E ML=3.9  EMSC   VANUATU                      

P: 20FEB2021 131707    17.0S  167.0E 4.0-5.5 AAAAA  Vanuatu Islands            

 

O: 21FEB2021 04:55:14  18.0S  178.0W mb=4.5  EMSC   FIJI REGION                  

P: 27FEB2021 131705    19.0S  178.0W 4.0-5.4 CAAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 21FEB2021 05:01:09   2.1S   68.2E mb=4.9  EMSC   CARLSBERG RIDGE              

P: 23FEB2021 131461     1.0S   67.0E 4.0-5.4 ABAAA  Indian Ocean               

P: 27FEB2021 131461     2.0S   69.0E 4.0-5.5 CAAAA  Indian Ocean               

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 20FEB2021 07:19:13  36.6S  179.9E ML=3.9  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 17FEB2021 131407    35.0S  179.0E 3.0-4.6 BBAAA  North Island, N.Z.         

 

O: 20FEB2021 09:13:38  36.6S  180.0W ML=4.1  EMSC   OFF E. COAST OF N. ISLAND, N.Z

O: 21FEB2021 05:17:21  37.0S  179.2E ML=3.7  EMSC   OFF E. COAST OF N. ISLAND, N.Z.

P: 27FEB2021 131728    37.0S  179.0W 3.5-5.1 CAAAA  E. of North Islands N.Z.   

 

O: 20FEB2021 07:33:27  42.9S  172.3E ML=4.2  EMSC   SOUTH ISLAND OF NEW ZEALAND  

O: 20FEB2021 07:33:27  42.9S  172.2E MS=4.3  GEONET Felt with moderate intensity

P: 19FEB2021 131736    43.0S  171.0E 3.0-5.0 AAAAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

 

O: 20FEB2021 13:23:27  43.3N  146.9E mb=5.4  EMSC   KURIL ISLANDS                 

P: 18FEB2021 131615    44.0N  147.0E 3.5-5.4 AAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 20FEB2021 09:54:10  35.6N  117.4W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 21FEB2021 131542    36.2N  117.9W 2.5-4.3 AAAAA  California/Nevada area     

P: 27FEB2021 131589    35.8N  117.6W 2.5-4.3 CAAAA  So. California             

 

O: 21FEB2021 01:24:48  36.2N  118.1W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 21FEB2021 01:41:17  36.2N  118.1W Ml=2.2  EMSC   CENTRAL CALIFORNIA

O: 21FEB2021 01:19:59  36.2N  118.1W ML=3.2  EMSC   CENTRAL CALIFORNIA           

P: 21FEB2021 131542    36.2N  117.9W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 21FEB2021 02:23:01  38.2N  118.1W ML=2.7  EMSC   NEVADA                        

O: 20FEB2021 14:31:35  38.3N  117.8W ML=2.9  EMSC   NEVADA

P: 22FEB2021 131545    38.0N  118.0W 2.5-4.9 AAAAA  California/Nevada area     

 

O: 20FEB2021 21:08:04  40.2N  124.2W Md=2.5  EMSC   NORTHERN CALIFORNIA          

O: 21FEB2021 03:11:01  40.5N  125.6W ML=2.8  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 20FEB2021 131634    40.7N  124.6W 2.5-4.9 AAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O: 20FEB2021 23:44:38  60.3N  152.3W ML=3.0  EMSC   SOUTHERN ALASKA

O: 20FEB2021 09:32:41  59.5N  153.0W ML=3.0  EMSC   SOUTHERN ALASKA              

P: 19FEB2021 131672    60.0N  153.5W 3.2-5.1 AAAAA  Central Alaska             

 

O: 20FEB2021 08:33:27  62.3N  148.6W ML=3.3  EMSC   CENTRAL ALASKA               

P: 21FEB2021 131673    60.1N  148.4W 3.2-4.9 ACAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.1 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska at Anchorage.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 20FEB2021 21:22:35  43.7N  128.0W mb=4.9  EMSC   OFF COAST OF OREGON

O: 20FEB2021 21:15:54  43.6N  127.9W Mw=5.1  EMSC   OFF COAST OF OREGON          

P: 18FEB2021 131636    44.3N  129.4W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

O: 20FEB2021 21:43:00  47.6N  120.3W Md=2.3  EMSC   WASHINGTON                    

P: 15FEB2021 131317    47.7N  120.3W 2.0-4.2 BAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 21FEB2021 05:23:28  31.7N  104.4W ML=2.5  EMSC   WESTERN TEXAS                

P: 19FEB2021 131579    31.5N  103.6W 2.0-4.3 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 20FEB2021 07:51:35  34.6N   96.3W ML=2.7  EMSC   OKLAHOMA                     

O: 20FEB2021 17:31:30  35.1N   95.4W ML=2.0  EMSC   OKLAHOMA

P: 20FEB2021 131594    35.0N   96.0W 2.0-4.3 AAAAA  Southern Plains            

 

O: 21FEB2021 05:01:34  36.1N   82.5W ML=2.0  EMSC   EASTERN TENNESSEE            

P: 22FEB2021 131561    37.0N   83.0W 2.0-3.9 AAAAA  Kentucky/Tennessee/NC      

 

HAWAII

 

O: 21FEB2021 03:33:31  19.3N  155.5W ML=3.6  EMSC   ISLAND OF HAWAII, HAWAII     

P: 20FEB2021 131494    19.2N  155.2W 3.0-4.4 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.6 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Naalehu, Captain Cook, Volcano, Kurtistown and Kailua Kona.

 

MODERATE QUAKES SHAKE ALEUTIANS, ALASKA; UNUSUAL QUAKE IN EGYPT

 

EARTHQUAKE SUMMARY FOR FEBRUARY 19, 2021

 

The strongest earthquake in the U.S. or Canada today was an M 5.4-5.6, followed by several moderate aftershocks in the western Andreanof Islands, Aleutians, Alaska. These events were reported with moderate intensity at Adak, Alaska. This was also the largest earthquake in the world today. Recent earthquakes of M>=5 in the area included an M 5.2 on February 14, 2020 and an M 6.1 on January 3, 2021. Today's activity is probably aftershocks of the January event. Forecast 131652 had expected today's activity within about 50 km was likely around February 23.

 

O: 19FEB2021 09:08:44  50.9N  179.3W ml=3.7  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 20FEB2021 04:10:53  50.9N  179.4W ML=3.9  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 20FEB2021 04:14:11  51.0N  179.4W mb=4.5  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 19FEB2021 09:11:24  51.1N  179.3W Mw=5.6  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 19FEB2021 09:19:07  51.1N  179.2W mb=4.8  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 19FEB2021 23:03:02  51.1N  179.0W ml=3.6  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 19FEB2021 09:08:44  50.9N  179.3W ml=3.7  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 23FEB2021 131652    51.6N  179.6W 3.5-5.1 BAAAA  Andreanoff Isls, Aleutians 

 

An M 3.8, possibly triggered by the M 5.6, occurred about six hour later in the central Andreanof Islands. Forecast 131323 and 131324 had expected this activity within about 25-100 km of this epicenter in mid-February.

 

O: 19FEB2021 15:33:09  51.4N  176.9W mb=3.8  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

P: 14FEB2021 131323    51.0N  177.1W 3.5-5.0 BAAAA  Andreanoff Isls, Aleutians 

P: 17FEB2021 131324    51.1N  175.8W 3.5-5.1 AAAAA  Andreanoff Isls, Aleutians 

 

A moderate earthquake of M 4.4 also occurred in the Rat Islands today. This  event was not reported felt in this remote area. It occurred within about 45 minutes of local solar noon and was probably enhanced by tidal stresses which maximize near this hour. Forecast 131337 had expected this activity was likely within about 50 km of this epicenter around February 17.

 

O: 19FEB2021 23:21:58  51.7N  178.3E mb=4.4  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 17FEB2021 131337    51.0N  179.0E 4.0-5.7 AAAAA  Rat Islands                

 

An unusual earthquake occurred in southwestern Egypt today with M 4.6. There have been no earthquakes located in this region of southern Egypt of M>=3.5 in the past 30 years within about 500 km of this epicenter. The last within about 750 km was an M 4.7 on June 4, 2003 but nothing in southwestern Egypt. All events of M>=3.5 were smaller and occurred about 750 km to the northeast of this epicenter. The only earthquake in southwestern Egypt in recent history (the past 100 years) of M>=4.6 was an M 5.2 on December 9, 1978. This epicenter follows a series of similar sized quakes in northern Africa over the past several weeks. It may have been promoted by strong concentrated seismic energy from the Loyalty Islands M 7.7 of February 10 which is located at 145 degrees distance. It is also at the fourth node (90 degrees) from the M 7.1 of February 13 in Honshu, Japan.

 

O: 19FEB2021 08:40:41  22.9N   28.7E ML=4.6  EMSC   EGYPT                        

 

An unusually large earthquake of M 4.2 was also widely felt today in northern Oklahoma and southern Kansas. NEIC reported this earthquake of M 4.2 in Northern Oklahoma was felt with intensity VII in the area(s) of Northern Oklahoma at Jet; V in Wakita; IV in Anthony, Nash, and in southern Kansas in Kiowa, Attica with III in Manchester, Burlington, Cherokee, Medford, Oklahoma. Two earthquakes of M>=4.2 have hit Oklahoma in the past year - both of M 4.2 on June 21, 2020 and more recently on February 5, 2021 but both of these are more than 100 km to the southeast of today's epicenter. The last earthquake of M>=4.2 within  about 75 km of today's epicenter was an M 4.4 on May 17, 2019 and prior to that an M 4.4 on June 9, 2018. Forecast 131595 had expected today's event within about 10 km was likely  around February 19, 2021. This epicenter is located at 103 degrees from the M 7.1 in the South Shetland Islands of January 21 and from the Loyalty Islands M 7.7 of February 10 and may have been promoted by energy from those sources.

 

O: 19FEB2021 13:56:57  37.0N   98.1W Mw=4.2  EMSC   OKLAHOMA                     

P: 19FEB2021 131595    37.0N   98.0W 2.0-3.9 AAAAA  Southern Plains            

 

Two moderate earthquakes were felt in New Zealand today. NEIC reported this earthquake of M 4.3 in Cook Strait, North Island, New Zealand was felt with intensity IV-V   in the area(s) of Cook Strait, North Island, New Zealand at Porirua, Wellington, Lower Hutt, Upper Hutt, Makara-Ohariu, and II-III in Kapiti, Otaki, Masterton, Picton and Palmerston North. GEONET reported an M 4.3-4.7 earthquake was felt with moderate intensity in Cook Strait and Southern North Island. 13037 people reported feeling this event; 4247 with weak intensity; 6846 with light shaking; 1769 moderate; 158 strong; 11 with severe and 6 with extreme shaking. Forecast 131736 had expected this event within about 100 km was likely around February 23.

 

O: 20FEB2021 05:15:06  41.2S  175.0E Mw=4.3  EMSC   COOK STRAIT, NEW ZEALAND     

O: 20FEB2021 05:15:06  41.1S  174.9E ML=4.7  GEONET Felt with moderate intensity

P: 23FEB2021 131736    42.0S  175.0E 3.0-5.1 BAAAA  So. Island, N.Z.           

 

 

The other event was an M 4.2-4.3 in the general area of Christchurch, South

Island, New Zealand. GEONET reported this earthquake was felt with moderate intensity in the area of Christchurch, South Island, New Zealand. 112 felt reports were published including 78 of weak and 28 of light shaking;  7 moderate; 0 strong; 0 severe and 0 extreme shaking in northern South Island.

Forecast 131736 had expected this event within about 100 km was likely around February 19.

 

O: 20FEB2021 07:33:27  42.9S  172.3E ML=4.2  EMSC   SOUTH ISLAND OF NEW ZEALAND  

O: 20FEB2021 07:33:27  42.9S  172.2E MS=4.3  GEONET Felt with moderate intensity

P: 19FEB2021 131736    43.0S  171.0E 3.0-5.0 AAAAA  So. Island, N.Z.           

 

An M 5.6 in the Vanuatu Islands also continued the series of moderate to large quakes in that area. It was preceded by an M 5.3 earlier in the day. Forecast 131707 had expected this activity within about 50 km was likely around February 20.

 

O: 20FEB2021 02:44:06  17.5S  167.7E Mw=5.6  EMSC   VANUATU                      

O: 19FEB2021 09:20:01  17.6S  167.7E Mw=5.3  EMSC   VANUATU

P: 20FEB2021 131707    17.0S  167.0E 4.0-5.5 AAAAA  Vanuatu 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

 

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

 

INDONESIA AND PHILIPPINES

 

O: 19FEB2021 19:19:26   0.5S  126.0E ML=4.0  EMSC   MOLUCCA SEA                  

P: 21FEB2021 131448     1.0N  127.0E 4.0-5.6 ABAAA  Halmahera                  

 

O: 19FEB2021 07:48:34   0.6S  135.6E ML=4.2  EMSC   BIAK REGION, INDONESIA       

P: 19FEB2021 131481     3.0S  136.0E 4.0-5.6 ACAAA  West Irian, PNG            

 

O: 19FEB2021 12:50:21   1.5N  127.1E ML=4.6  EMSC   HALMAHERA, INDONESIA         

P: 21FEB2021 131448     1.0N  127.0E 4.0-5.6 AAAAA  Halmahera                  

 

O: 19FEB2021 20:00:01   3.6N  126.7E ML=4.0  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 20FEB2021 131450     3.0N  126.0E 4.0-5.6 AAAAA  Mindanao, Philippines      

 

O: 19FEB2021 16:29:26   9.2S  113.1E ML=4.3  EMSC   SOUTH OF JAVA, INDONESIA     

P: 19FEB2021 131472     9.0S  114.0E 4.0-5.5 AAAAA  So. of Bali                

 

O: 19FEB2021 15:23:56  10.3S  126.7E mb=4.5  EMSC   TIMOR SEA                    

P: 15FEB2021 131367    10.0S  124.0E 4.0-5.6 BACAA  Flores Island area         

 

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 20FEB2021 07:11     37.5S   72.3W mb=4.6  GUC    Biobio at Los Angeles; III in

P: 14FEB2021 131400    37.0S   74.0W 4.0-5.6 CABAA  Central Chile              

 

GUC reported this earthquake was felt with intensity IV in  Biobio at Los Angeles; III in Chiguayante, Talcahuano; in Nuble with IV in Yungay; III in Chillan, Quinhoe, Trehuaco, and II in Ranquil; in La Araucania with III in Angol, Collipulli, Lautaro, Padre las Casas, Temuco, Chile.

 

O: 19FEB2021 11:49     33.2S   70.2W mb=4.5  GUC    Santiago at Colina, Las Condes

P: 18FEB2021 131723    31.0S   71.0W 4.0-5.7 ACAAA  Central Chile               

 

GUC reported this earthquake was felt with intensity III in  Santiago at Colina, Las Condes, Paine, II in Tiltil, Chile.

NEIC reported this earthquake of M 4.1 in Santiago, Chile was felt with intensity II-III in the area(s) of Santiago, Chile.

 

O: 19FEB2021 19:52:44  25.8N  100.4W ML=3.2  EMSC   MONTERREY AREA, NVO LEON, MEXICO

O: 19FEB2021 19:27:37  25.8N  100.4W ML=3.2  EMSC   MONTERREY AREA, NVO LEON, MEXI

 

O: 19FEB2021 07:02:29  16.5N   94.8W ML=4.0  EMSC   OAXACA, MEXICO               

O: 19FEB2021 07:18:15  16.7N   94.2W ML=4.0  EMSC   OAXACA, MEXICO               

P: 17FEB2021 131160    16.0N   95.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O: 19FEB2021 18:27:08  17.9S   69.7W mb=4.1  EMSC   TARAPACA, CHILE              

P: 19FEB2021 131718    20.0S   69.0W 4.0-5.5 ACAAA  So. Peru/Bolivia           

 

O: 19FEB2021 23:39:32  18.4N   69.0W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P: 17FEB2021 131182    19.0N   69.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 20FEB2021 06:44:14  24.1N  108.5W mb=4.0  EMSC   GULF OF CALIFORNIA           

P: 27FEB2021 131522    24.0N  109.0W 3.5-4.8 CAAAA  Gulf of California         

 

O: 19FEB2021 22:41:20  24.9S   70.2W ML=3.7  EMSC   ANTOFAGASTA, CHILE           

P: 17FEB2021 131384    24.0S   69.0W 4.0-5.6 AAAAA  Coast No. Chile            

 

O: 20FEB2021 03:43:46  31.4S   70.5W ML=4.0  EMSC   SAN JUAN, ARGENTINA          

P: 18FEB2021 131723    31.0S   71.0W 4.0-5.7 AAAAA  Central Chile              

 

O: 19FEB2021 10:48:36  33.1S   72.3W Mw=4.4  EMSC   OFFSHORE VALPARAISO, CHILE   

O: 19FEB2021 11:49:04  33.3S   70.3W ML=4.4  EMSC   REGION METROPOLITANA, CHILE  

P: 24FEB2021 131724    34.0S   72.0W 4.0-5.9 BAAAA  Central Chile              

 

NEIC reported this earthquake of M 4.4 in Valparaiso, Chile was felt with intensity II-III in the area(s) of Valparaiso, Chile in Vina del Mar (IV) and Quilpue (V) and Penaflor, Santiago.

 

O: 20FEB2021 07:11:41  37.4S   72.4W mb=4.5  EMSC   BIO-BIO, CHILE               

P: 14FEB2021 131400    37.0S   74.0W 4.0-5.6 CAAAA  Central Chile              

P: 24FEB2021 131725    39.0S   73.0W 4.0-5.5 BBAAA  Central Chile              

 

NEIC reported this earthquake of M 4.5 in Bio-Bio Chile  was felt with intensity IV in the area(s) of Bio-Bio Chile at Los Angeles, and Chilan.

 

O: 19FEB2021 16:02:11  39.4S   72.0W ML=3.9  EMSC   ARAUCANIA, CHILE             

P: 24FEB2021 131725    39.0S   73.0W 4.0-5.5 BAAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O: 19FEB2021 08:40:41  22.9N   28.7E ML=4.6  EMSC   EGYPT                        

 

O: 20FEB2021 00:23:59  38.3N   15.3E ML=2.2  EMSC   SICILY, ITALY                

O: 20FEB2021 05:13:02  38.9N   14.1E ML=2.6  EMSC   SICILY, ITALY                

P: 21FEB2021 131563    38.0N   15.0E 3.0-4.6 AAAAA  Mediterranean/Sicily       

 

O: 20FEB2021 00:01:26  23.4N   94.7E mb=4.1  EMSC   MYANMAR                      

P: 27FEB2021 131528    25.0N   95.0E 4.0-5.4 CBAAA  Myanmar                    

 

O: 19FEB2021 11:08:32  29.9N   80.3E ML=4.0  EMSC   NEPAL-INDIA BORDER REGION    

P: 23FEB2021 131604    30.0N   80.0E 3.8-5.5 BAAAA  Xizang                     

 

SOUTHWEST PACIFIC

 

O: 20FEB2021 00:25:29  16.0S  175.6W mb=4.6  EMSC   TONGA                        

P: 23FEB2021 131705    17.0S  175.0W 4.0-5.5 BAAAA  Tonga Islands              

 

O: 20FEB2021 02:44:06  17.5S  167.7E Mw=5.6  EMSC   VANUATU                      

O: 19FEB2021 09:20:01  17.6S  167.7E Mw=5.3  EMSC   VANUATU

P: 20FEB2021 131707    17.0S  167.0E 4.0-5.5 AAAAA  Vanuatu Islands             

 

O: 19FEB2021 08:31:22  23.3S  171.5E Mw=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 21FEB2021 131712    22.0S  170.0E 4.0-5.5 ABAAA  Loyalty Islands            

P: 23FEB2021 131712    23.0S  171.0E 4.0-5.3 BAAAA  Loyalty Islands            

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 19FEB2021 16:06:23  30.4S  180.0E mb=3.9  EMSC   KERMADEC ISLANDS REGION      

P: 17FEB2021 131417    32.0S  178.0E 4.0-5.3 ABBAA  So. Kermadec Islands       

 

O: 20FEB2021 07:19:13  36.6S  179.9E ML=3.9  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 17FEB2021 131407    35.0S  179.0E 3.0-4.6 BBAAA  North Island, N.Z.         

 

O: 20FEB2021 05:15:06  41.2S  175.0E Mw=4.3  EMSC   COOK STRAIT, NEW ZEALAND     

O: 20FEB2021 05:15:06  41.1S  174.9E ML=4.7  GEONET Felt with moderate intensity

P: 23FEB2021 131736    42.0S  175.0E 3.0-5.1 BAAAA  So. Island, N.Z.           

 

GEONET reported this earthquake was felt with moderate intensity in Cook Strait and Southern North Island. 13037 people reported feeling this event; 4247 with weak intensity; 6846 with light shaking; 1769 moderate; 158 strong; 11 with severe and 6 with extreme shaking.

 

O: 20FEB2021 07:33:27  42.9S  172.3E ML=4.2  EMSC   SOUTH ISLAND OF NEW ZEALAND  

O: 20FEB2021 07:33:27  42.9S  172.2E MS=4.3  GEONET Felt with moderate intensity

P: 19FEB2021 131736    43.0S  171.0E 3.0-5.0 AAAAA  So. Island, N.Z.           

 

GEONET reported this earthquake was felt with moderate intensity in the area of Christchurch, South Island, New Zealand. 112 felt reports were published including 78 of weak and 28 of light shaking;  7 moderate; 0 strong; 0 severe and 0 extreme shaking in northern South Island.

 

JAPAN AND KURIL ISLANDS

 

O: 19FEB2021 23:53:30  37.3N  141.6E ML=4.5  EMSC   NEAR EAST COAST OF HONSHU, JAP

O: 19FEB2021 19:01:06  37.7N  141.7E mb=4.5  EMSC   NEAR EAST COAST OF HONSHU, JAP

O: 20FEB2021 01:17:05  38.4N  141.8E mb=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 19FEB2021 131575    38.0N  141.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

O: 19FEB2021 09:11:30  40.2N  141.2E ML=3.9  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 19FEB2021 16:16:27  40.6N  142.8E Mw=5.0  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 22FEB2021 131613    41.0N  141.0E 3.5-5.5 BAAAA  Hokkaido, Japan            

 

NEIC reported this earthquake of M 5.0 in Northern Honshu, Japan was felt with intensity II-III in the area(s) of Northern Honshu, Japan in Aomori and Miyagi.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 20FEB2021 04:03:59  32.2N  115.3W ML=2.6  EMSC   BAJA CALIFORNIA, MEXICO      

P: 19FEB2021 131580    32.0N  116.3W 2.5-4.6 AAAAA  So. California             

P: 20FEB2021 131581    33.0N  115.9W 2.5-4.4 AAAAA  So. California             

 

O: 19FEB2021 11:00:20  33.9N  120.3W Ml=2.5  EMSC   CHANNEL ISLANDS REG., CALIFORN

P: 17FEB2021 131257    33.8N  119.7W 2.5-4.4 AAAAA  So. California             

 

O: 20FEB2021 06:49:01  35.6N  117.5W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 20FEB2021 02:33:51  35.7N  117.5W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 19FEB2021 08:52:38  36.0N  117.3W ML=2.9  EMSC   CENTRAL CALIFORNIA           

O: 19FEB2021 08:52:38  36.0N  117.3W ML=3.0  ANSS   CENTRAL CALIFORNIA           

P: 21FEB2021 131542    36.2N  117.9W 2.5-4.3 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.0 in Southern California was felt with intensity II-III in the area(s) of Southern California at Ridgecrest, Trona and Death Valley.

 

O: 20FEB2021 04:59:19  38.2N  117.8W ml=2.2  EMSC   NEVADA

O: 20FEB2021 01:06:48  38.2N  117.9W ml=2.0  EMSC   NEVADA                       

P: 22FEB2021 131545    38.0N  118.0W 2.5-4.9 AAAAA  California/Nevada area     

 

O: 19FEB2021 08:44:36  38.6N  118.2W ml=2.5  EMSC   NEVADA                        

P: 17FEB2021 131209    38.2N  118.8W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 19FEB2021 15:19:58  39.2N  119.6W ml=2.0  EMSC   NEVADA                       

P: 18FEB2021 131608    40.2N  119.6W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 19FEB2021 09:18:58  39.6N  120.4W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 20FEB2021 131631    40.0N  120.9W 2.5-4.4 AAAAA  Northern California        

 

O: 19FEB2021 08:51:00  39.7N  121.9W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 18FEB2021 131633    40.2N  121.2W 2.5-4.5 AAAAA  Northern California        

 

 

ALASKA

 

O: 19FEB2021 09:11:05  61.7N  141.8W ml=3.0  EMSC   SOUTHERN ALASKA              

P: 17FEB2021 131347    60.3N  143.1W 3.2-5.1 ABAAA  Central Alaska             

 

O: 19FEB2021 09:08:44  50.9N  179.3W ml=3.7  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 20FEB2021 04:10:53  50.9N  179.4W ML=3.9  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 20FEB2021 04:14:11  51.0N  179.4W mb=4.5  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 19FEB2021 09:11:24  51.1N  179.3W Mw=5.6  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 19FEB2021 09:19:07  51.1N  179.2W mb=4.8  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 19FEB2021 23:03:02  51.1N  179.0W ml=3.6  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 19FEB2021 09:08:44  50.9N  179.3W ml=3.7  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 23FEB2021 131652    51.6N  179.6W 3.5-5.1 BAAAA  Andreanoff Isls, Aleutians 

 

O: 19FEB2021 15:33:09  51.4N  176.9W mb=3.8  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS.

O: 19FEB2021 15:33:09  51.4N  176.9W mb=3.8  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 14FEB2021 131323    51.0N  177.1W 3.5-5.0 BAAAA  Andreanoff Isls, Aleutians 

P: 17FEB2021 131324    51.1N  175.8W 3.5-5.1 AAAAA  Andreanoff Isls, Aleutians 

 

O: 19FEB2021 23:21:58  51.7N  178.3E mb=4.4  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 17FEB2021 131337    51.0N  179.0E 4.0-5.7 AAAAA  Rat Islands                

 

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: 19FEB2021 22:38:44  31.7N  104.1W ML=2.5  EMSC   WESTERN TEXAS                

P: 19FEB2021 131579    31.5N  103.6W 2.0-4.3 AAAAA  SW U.S.A                   

 

O: 20FEB2021 01:47:47  37.4N  104.8W ML=2.6  EMSC   COLORADO                     

P: 15FEB2021 131222    37.4N  104.7W 2.0-4.1 BAAAA  Colorado area              

P: 20FEB2021 131555    37.0N  105.2W 2.0-4.3 AAAAA  Colorado area              

 

O: 19FEB2021 06:59:24  44.5N  115.2W Ml=2.0  EMSC   SOUTHERN IDAHO

O: 19FEB2021 07:05:33  44.3N  115.2W Ml=2.0  EMSC   SOUTHERN IDAHO               

P: 20FEB2021 131623    44.5N  115.4W 2.0-4.4 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

 

O: 19FEB2021 10:14:06  34.4N   97.4W ML=2.1  EMSC   OKLAHOMA                      

O: 19FEB2021 18:19:08  34.4N   97.4W ML=2.1  EMSC   OKLAHOMA

P: 15FEB2021 131264    35.0N   97.0W 2.0-4.0 BAAAA  Southern Plains            

 

O: 19FEB2021 13:56:57  37.0N   98.1W Mw=4.2  EMSC   OKLAHOMA                     

P: 19FEB2021 131595    37.0N   98.0W 2.0-3.9 AAAAA  Southern Plains            

 

HAWAII

 

O: 19FEB2021 15:54:18  19.3N  155.4W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P: 20FEB2021 131494    19.2N  155.2W 3.0-4.4 AAAAA  Hawaii                     

 

VOLCANIC ERUPTIONS IN SICILY AND INDONESIA

 

EARTHQUAKE SUMMARY FOR FEBRUARY 18, 2021

 

Strong eruptions of Mount Merapi in Indonesia and Etna in Sicily occurred today. The eruption in Merapi was accompanied by lava avalanches and residents were warned to avoid the area. Hundreds of minor earthquakes accompanied the eruption. Mount Merapi's last major eruption was in 2010 and killed more than 300 people. A major eruption in 1930 killed more than 1300. Merapi is located south of Java, Indonesia at 7.5S 110.5E. This epicenter is at 65.4 degrees (node 11) from the Loyalty Islands activity which included an M 7.7 on February 10 and was probably promoted by energy from that source. Other importance quakes at this distance today from Honshu, Japan occurred as an M 6.1 in Fiji and as continuing activity in the Loyalty Islands.

 

O: 18FEB2021 00:00:00   7.5S  110.5E ML=5.0  EMSC   Volcanic eruption at Merapi, INDONESIA             

 

The eruption in Mount Etna, Sicily, Italy today continued a major eruption of that volcano which began several days ago. Spectacular views of this eruption and the accompanying ash cloud can be view on the web. Etna is located at 38N 15E. Forecast 131563 had expected activity near Mt. Etna around February 21.

The activity at Etna is at 90 degrees (node 4) from the M 7.1 quake in Honshu, Japan of February 13 and may have been promoted by energy from that source.

 

O: 19FEB2021 00:00:00  38.7N   15.4E ML=5.0  EMSC   Volcanic eruption at SICILY, ITALY                

P: 21FEB2021 131563    38.0N   15.0E 3.0-4.6 AAAAA  Mediterranean/Sicily       

 

The strongest earthquake in the world today was an M 6.1 in the region of Fiji.

This event is likely related to strongly enhanced seismicity to the south and east in the Vanuatu and Loyalty Islands. It is located at 65.4 degrees (node 11) from the M 7.1 in Honshu, Japan of February 13 and may have been promoted by energy from that source. The activity in the Loyalty Islands is also at 65.4 degrees from Honshu, Japan. Forecast 131371 had expected today's activity was likely within about 100 km around February 17. A strong GRB was associated with the event in Fiji today as noted in this summary:

 

"The last major Gamma Ray Burst (GRB) according to the online NASA Swift GRB Catalog was observed on February 18, 2021 at 13:35 UT with BAT Fluence  n/a erg/cm2 (MAGNITUDE: n/a), Associated earthquake: Fiji Islands, M 6.1 (15:30 UT), 13:35 UT Puerto Rico, Southern Alaska, Hawaii)" (February 18, 2021)

 

This earthquake is the strongest within about 200 km of today's epicenter since

an M 6.7 on June 29, 2014.

 

O: 19FEB2021 03:10:30  14.6S  177.0W mb=5.0  EMSC   FIJI REGION                  

O: 18FEB2021 15:30:51  15.0S  176.6W Mw=6.1  EMSC   FIJI REGION                  

P: 17FEB2021 131371    14.0S  177.0W 4.0-5.4 AAAAA  Samoa Islands              

 

The second strongest earthquake in the world today was an M 5.8 in the Central East Pacific Rise. It was not felt in this remote area. This is the strongest earthquake within about 300 km of this epicenter since an M 5.8 on June 23, 2011. The last, and only event in the region of larger magnitude in the past 30 years was an M 6.0 on October 30, 2008. Today's event occurred within about 15 minutes of local solar noon and may have been promoted by high tidal stresses which maximize near this hour. Forecast 131139 had expected activity in this area was likely in mid-February. This epicenter is near the 103-105 degree distance from Honshu, Japan and may have been promoted by energy from that source.

 

O: 18FEB2021 19:31:30   9.2S  108.6W Mw=5.8  EMSC   CENTRAL EAST PACIFIC RISE    

P: 14FEB2021 131139     6.0S  111.0W 4.0-5.6 BCBAA  No. East Pacific Rise      

 

An unusual M 3.9 hit the region of Somerset Island, Nunavut, Canada today. It was not reported felt in this remote area. This event is near the North Magnetic Pole and occurred near local solar noon. It is likely it was promoted by a strong geomagnetic storm at high latitudes which occurred February 17 as noted in a previous issues of this report:

 

"The geomagnetic field saw active  conditions today. The AP level was 15.  High latitude geomagnetic field  saw stormy conditions with AP 45. This storm is the strongest at high latitudes since AP at high latitudes reached 45 on November 22, 2020. Strong excursions in the geomagnetic field can be accompanied by enhanced seismicity at high latitudes and near the geomagnetic equator in the next several days." (February 16, 2021)

 

The last activity in the Somerset Island region of Canada with the last such geomagnetic storm on November 22-22, 2020. This included an M 4.9 earthquake. The area also saw an M 6.0 on January 8, 2017, the largest in the past 30 years in the region. At the time this summary noted this event as:

 

“The strongest earthquake in the U.S. or Canada or the world today occurred near the North Geomagnetic Pole (NGP) near Devon Island in northern Canada with M 5.8-6.1. This is a remote area and while this event was reported felt by five people, it was not damaging and no tsunami was reported. There are no previous reports of any earthquake in the area of M>=5.8. Two events of M 5.4-5.7 hit the same general area on December 13, 1987 and March 8, 1963. The unusually large magnitude of this earthquake and the location near the North Geomagnetic Pole suggest some promotional effects from the current geomagnetic storms at high latitudes which have been ongoing for the past week. Today's event may also reflect loss of ice weight as the area responds to regional warming conditions. The loss of ice load can cause rebound in the land beneath." (January 8, 2017)

 

"The geomagnetic field was at disturbed conditions today.  The AP level was 16.  High latitude geomagnetic field had minor storms with AP at 26." (January 8, 2017)

 

O: 18FEB2021 07:07:54  73.4N   90.6W ML=3.9  EMSC   SOMERSET ISLAND, NUNAVUT, CANA

O: 18FEB2021 07:07:54  73.4N   90.6W MB=3.9  ECAN Arctic Bay, NU                 

 

The strongest earthquake in the U.S. or Canada today was an M 4.3 in southern Alaska. NEIC reported this earthquake of M 4.1-4.3 in Southern Alaska was felt with intensity II-III in the area(s) of Southern Alaska in Pedro Bay, Homer and Anchorage. This is the strongest earthquake within about 150 km of this epicenter since an M 4.5 on December 1, 2019. Forecast 131672 had expected today's event within about 25 km was likely around February 19.

 

O: 18FEB2021 13:36:11  60.0N  153.1W ML=4.3  EMSC   SOUTHERN ALASKA              

P: 19FEB2021 131672    60.0N  153.5W 3.2-5.1 AAAAA  Central Alaska             

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

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

 

INDONESIA AND PHILIPPINES

 

O: 18FEB2021 16:15:51   3.2S  138.9E ML=4.2  EMSC   PAPUA, INDONESIA             

P: 21FEB2021 131481     3.0S  138.0E 4.0-5.5 BAAAA  West Irian, PNG            

 

O: 18FEB2021 17:50:56   4.3S  144.3E mb=5.1  EMSC   NEAR N COAST OF NEW GUINEA, PN

P: 21FEB2021 131464     4.0S  145.0E 4.0-5.3 BAAAA  New Ireland                

 

O: 18FEB2021 14:04:36   6.5S  130.2E ML=4.3  EMSC   BANDA SEA                    

P: 15FEB2021 131153     6.0S  131.0E 4.0-5.4 BAAAA  West Irian, PNG             

P: 19FEB2021 131455     7.0S  129.0E 4.0-5.4 AAAAA  Banda Sea                  

 

O: 18FEB2021 10:40:18   7.0S  129.7E mb=4.5  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 19FEB2021 131455     7.0S  129.0E 4.0-5.4 AAAAA  Banda Sea                  

 

CENTRAL AND SOUTH AMERICA

 

O: 19FEB2021 06:54     29.3S   71.6W mb=4.9  GUC    Coquimbo at Vicuna; IV in Coqu

P: 16FEB2021 131383    29.0S   72.0W 4.0-5.4 BAAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity  V in  Coquimbo at Vicuna; IV in Coquimbo, La Higuera, La Serena, Mone Patria, Rio Hurtado III in Andacollo; IV in Atacama at Alto del Carmen and Vallenar and III in Copiapo, Freirina, Huasco and Tierra Amarilla, Chile.

 

O: 18FEB2021 10:51:30   3.9S   78.8W mb=5.2  EMSC   PERU-ECUADOR BORDER REGION   

P: 19FEB2021 131459     4.0S   80.0W 4.0-5.6 AAAAA  Ecuador                    

 

NEIC reported this earthquake of M 5.2 in Southern Ecuador was felt with intensity II-III in the area(s) of Southern Ecuador at Zamora (V), Loja, Cariamanga, and Cuenca, Azuay.

 

O: 18FEB2021 21:12:19  17.9N   68.2W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P: 19FEB2021 131510    18.0N   67.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O: 18FEB2021 23:56:01  18.3N   69.1W ML=3.3  EMSC   DOMINICAN REPUBLIC REGION    

O: 18FEB2021 12:59:31  18.8N   70.3W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 17FEB2021 131182    19.0N   69.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 19FEB2021 02:07:47  19.3N   65.1W Md=3.4  EMSC   VIRGIN ISLANDS REGION        

P: 18FEB2021 131517    20.0N   65.0W 3.0-4.3 AAAAA  Bahamas/No. Caribbean      

 

O: 18FEB2021 09:09:47  19.3N   68.2W Md=3.7  EMSC   DOMINICAN REPUBLIC REGION    

P: 17FEB2021 131182    19.0N   69.0W 3.4-5.2 AAAAA  Puerto Rico                 

 

O: 19FEB2021 06:54:27  29.3S   71.7W Mw=4.9  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 16FEB2021 131383    29.0S   72.0W 4.0-5.4 BAAAA  Coast Central Chile        

 

 

AFRICA AND EUROPE

 

O: 19FEB2021 04:46:51  38.7N   15.4E ML=2.2  EMSC   SICILY, ITALY                

P: 21FEB2021 131563    38.0N   15.0E 3.0-4.6 AAAAA  Mediterranean/Sicily       

 

O: 18FEB2021 12:08:40  45.4N   16.2E ML=4.1  EMSC   CROATIA                      

P: 18FEB2021 131606    45.0N   16.0E 3.0-4.8 AAAAA  Adriatic Sea                

 

O: 19FEB2021 00:42:51  28.5N   16.1W ML=2.2  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 22FEB2021 131521    28.0N   16.0W 3.0-4.9 BAAAA  Canary Islands             

 

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

 

SOUTHWEST PACIFIC

 

O: 19FEB2021 03:10:30  14.6S  177.0W mb=5.0  EMSC   FIJI REGION                  

O: 18FEB2021 15:30:51  15.0S  176.6W Mw=6.1  EMSC   FIJI REGION                  

P: 17FEB2021 131371    14.0S  177.0W 4.0-5.4 AAAAA  Samoa Islands               

 

O: 18FEB2021 16:04:45  19.2S  173.4W Mw=5.3  EMSC   TONGA                        

P: 15FEB2021 131377    19.0S  173.0W 4.0-5.6 BAAAA  Tonga Islands              

 

O: 19FEB2021 04:10:53  22.8S  171.3E mb=4.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 21FEB2021 131712    22.0S  170.0E 4.0-5.5 AAAAA  Loyalty Islands            

 

OCEAN RIDGES

 

O: 18FEB2021 19:31:30   9.2S  108.6W Mw=5.8  EMSC   CENTRAL EAST PACIFIC RISE    

P: 14FEB2021 131139     6.0S  111.0W 4.0-5.6 BCBAA  No. East Pacific Rise       

 

O: 19FEB2021 06:34:08   0.2S   18.3W mb=5.1  EMSC   CENTRAL MID-ATLANTIC RIDGE   

P: 21FEB2021 131457     1.0S   16.0W 4.0-5.6 AABAA  Central Mid-Atlantic       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 18FEB2021 07:15:52  31.5S  179.2E ML=4.6  EMSC   KERMADEC ISLANDS REGION      

O: 18FEB2021 10:40:43  31.7S  178.5E mb=4.1  EMSC   KERMADEC ISLANDS REGION      

P: 17FEB2021 131417    32.0S  178.0E 4.0-5.3 AAAAA  So. Kermadec Islands       

 

O: 19FEB2021 06:14:42  31.9S  179.2W mb=4.9  EMSC   KERMADEC ISLANDS REGION      

P: 20FEB2021 131731    32.0S  180.0W 4.0-5.8 AAAAA  So. Kermadec Islands       

 

O: 18FEB2021 20:14:49  54.5S  144.0E Mw=5.4  EMSC   WEST OF MACQUARIE ISLAND     

O: 18FEB2021 20:18:43  54.7S  143.9E mb=5.2  EMSC   WEST OF MACQUARIE ISLAND     

 

JAPAN AND KURIL ISLANDS

 

O: 18FEB2021 10:09:30  24.3N  125.2E ML=4.2  EMSC   SOUTHWESTERN RYUKYU ISL., JAPA

P: 17FEB2021 131203    24.0N  125.0E 4.0-5.3 AAAAA  Taiwan                     

 

O: 18FEB2021 10:26:22  27.0N  140.2E mb=4.1  EMSC   BONIN ISLANDS, JAPAN REGION  

P: 12FEB2021 131188    27.0N  140.0E 4.0-5.4 CAAAA  Bonin Islands              

P: 23FEB2021 131520    28.0N  142.0E 4.0-5.4 BABAA  Bonin Islands              

 

O: 18FEB2021 10:37:30  37.6N  141.6E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAP

O: 18FEB2021 12:42:59  37.6N  141.7E mb=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAP

O: 19FEB2021 01:07:11  37.7N  141.9E mb=4.8  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 19FEB2021 131575    38.0N  141.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

O: 18FEB2021 07:01:08  42.0N  142.5E mb=4.1  EMSC   HOKKAIDO, JAPAN REGION       

P: 20FEB2021 131614    42.0N  144.0E 3.5-5.5 AAAAA  Hokkaido, Japan            

 

O: 18FEB2021 07:06:15  26.8N   55.3E mb=4.2  EMSC   SOUTHERN IRAN                 

P: 22FEB2021 131534    28.0N   55.0E 3.5-5.2 BBAAA  So. Iran/Persian Gulf      

 

NEIC reported this earthquake of M 4.2 in Iran was felt with intensity II-III in the area(s) of  Dubai, United Arab Emirates.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 19FEB2021 00:13:19  37.2N  118.2W ML=3.1  EMSC   CENTRAL CALIFORNIA           

O: 19FEB2021 00:13:19  37.2N  118.2W ML=3.5  ANSS   CENTRAL CALIFORNIA           

O: 19FEB2021 00:26:34  37.2N  118.2W ml=2.2  EMSC   CENTRAL CALIFORNIA            

P: 20FEB2021 131545    37.5N  118.6W 2.5-4.8 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.4 in California-Nevada was felt with intensity II-III in the area(s) of California-Nevada at Big Pine, Bishop. 

 

O: 19FEB2021 03:44:31  37.5N  121.8W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 20FEB2021 131550    37.9N  122.0W 2.5-4.6 AAAAA  Central California         

 

O: 18FEB2021 11:21:29  38.1N  118.0W ml=2.0  EMSC   NEVADA                       

O: 18FEB2021 23:31:20  38.2N  117.9W ml=2.2  EMSC   NEVADA                       

P: 22FEB2021 131545    38.0N  118.0W 2.5-4.9 BAAAA  California/Nevada area     

 

O: 18FEB2021 23:25:14  39.4N  119.7W ml=2.0  EMSC   NEVADA                       

P: 18FEB2021 131608    40.2N  119.6W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 18FEB2021 09:42:50  39.6N  120.4W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P: 17FEB2021 131219    39.4N  120.5W 2.5-4.5 AAAAA  Central California         

 

O: 18FEB2021 16:07:14  39.8N  120.3W Md=2.7  EMSC   NORTHERN CALIFORNIA          

P: 17FEB2021 131219    39.4N  120.5W 2.5-4.5 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in Northern California was felt with intensity II-III in the area(s) of Northern California in Portola and Loyalton.

 

ALASKA

 

O: 19FEB2021 03:33:16  54.5N  159.7W ML=3.5  EMSC   SOUTH OF ALASKA              

P: 18FEB2021 131669    54.6N  161.7W 3.5-5.2 AAAAA  Unimak Islands, Aleutians  

 

O: 18FEB2021 22:26:03  57.0N  157.6W ML=3.1  EMSC   ALASKA PENINSULA             

P: 20FEB2021 131650    54.8N  158.7W 3.5-5.3 ACAAA  Alaska Peninsula           

 

O: 18FEB2021 15:18:39  59.9N  146.5W ml=3.3  EMSC   GULF OF ALASKA               

P: 25FEB2021 131673    60.1N  147.1W 3.2-5.1 CAAAA  Central Alaska              

 

O: 18FEB2021 13:36:11  60.0N  153.1W ML=4.3  EMSC   SOUTHERN ALASKA              

P: 19FEB2021 131672    60.0N  153.5W 3.2-5.1 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 18FEB2021 17:18:45  42.1N  121.9W Md=2.1  EMSC   OREGON                       

O: 18FEB2021 21:39:26  44.3N  120.9W Ml=2.3  EMSC   OREGON                       

P: 18FEB2021 131638    42.2N  120.3W 2.0-3.8 ACAAA  Oregon state, U.S.         

 

ROCKY MOUNTAINS REGION

 

O: 18FEB2021 23:52:30  31.7N  104.4W ML=2.5  EMSC   WESTERN TEXAS                

P: 19FEB2021 131579    31.5N  103.6W 2.0-4.3 AAAAA  SW U.S.A                   

 

O: 18FEB2021 19:24:52  46.3N  111.5W Ml=2.1  EMSC   WESTERN MONTANA              

P: 24FEB2021 131649    46.4N  111.4W 2.0-4.1 CAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O: 18FEB2021 07:37:20  28.5N  100.3W mb=3.4  EMSC   SOUTHERN TEXAS               

P: 19FEB2021 131579    31.5N  103.6W 2.0-4.3 ACBAA  SW U.S.A                   

 

O: 19FEB2021 04:08:52  36.7N   97.7W mb=2.6  EMSC   OKLAHOMA                     

P: 19FEB2021 131595    37.0N   98.0W 2.0-3.9 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 2.9 in Oklahoma was felt with intensity II-III in the area(s) of Oklahoma in Pond Creek and Medford.

 

O: 18FEB2021 07:07:54  73.4N   90.6W ML=3.9  EMSC   SOMERSET ISLAND, NUNAVUT, CANA

O: 18FEB2021 07:07:54  73.4N   90.6W MB=3.9  ECAN Arctic Bay, NU                 

 

O: 18FEB2021 13:04:01  57.3N   59.7W MB=2.9  ECAN Nutak, NL                      

 

HAWAII

 

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

 

STRONG QUAKES CONTINUE IN LOYALTY AND VANUATU ISLANDS

 

EARTHQUAKE SUMMARY FOR FEBRUARY 17, 2021

 

Strong earthquakes continued throughout much of southern Vanuatu and in the Loyalty Islands today. The strongest of these occurred at a fresh epicenter as an M 6.2 south of Vila Shefa, Vanuatu where it was felt with intensity III. An earthquake of M 5.7 also occurred about 150 km north of this in the aftershock zone near Vila Shefa. The Loyalty Islands aftershock zone was also active with a strong M 6.1 aftershock. This activity near the geomagnetic equator may have been promoted by a strong geomagnetic storm which occurred yesterday as noted in this summary:

 

"The geomagnetic field saw active  conditions today. The AP level was 15.  High latitude geomagnetic field  saw stormy conditions with AP 45. This storm is the strongest at high latitudes since AP at high latitudes reached 45 on November 22, 2020. Strong excursions in the geomagnetic field can be accompanied by enhanced seismicity at high latitudes and near the geomagnetic equator in the next several days." (February 16, 2021)

 

Forecast 131707 had expected today's activity was likely within about 100 km around February 18.

 

O: 18FEB2021 06:37:31  18.9S  168.0E Mw=6.2  EMSC   VANUATU                      

P: 18FEB2021 131707    18.0S  168.0E 4.0-5.3 AAAAA  Vanuatu Islands            

 

O: 18FEB2021 00:37:02  22.9S  172.4E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 17FEB2021 22:49:39  23.2S  171.9E Mw=6.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 17FEB2021 10:51:10  23.3S  171.9E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 17FEB2021 23:35:21  23.4S  171.8E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 17FEB2021 12:59:36  22.8S  172.5E Mw=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 14FEB2021 131386    23.0S  171.0E 4.0-5.4 BAAAA  Loyalty Islands            

 

The M 5.7 aftershock in Central Vanuatu was reported by NEIC to have been felt with intensity VI in Vila Shefa, Vanuatu. It was accompanied by a series of moderate earthquakes which were also felt in Vila Shefa, Vanuatu. Forecast 131707 had expected today's activity was likely within about 100 km around February 18.

 

O: 17FEB2021 11:31:59  17.5S  167.9E Mw=5.2  EMSC   VANUATU

O: 17FEB2021 11:45:17  17.5S  167.8E mb=4.9  EMSC   VANUATU

O: 17FEB2021 12:21:44  17.5S  167.7E Mw=5.5  EMSC   VANUATU

O: 17FEB2021 15:25:15  17.5S  167.6E mb=4.7  EMSC   VANUATU

O: 17FEB2021 09:30:35  17.5S  167.8E Mw=5.4  EMSC   VANUATU                      

P: 20FEB2021 131707    17.0S  167.0E 4.0-5.5 BAAAA  Vanuatu Islands            

 

To the south of the Loyalty Islands a set of moderate earthquakes has been occurring in the Norfolk Islands, Australia. These included events of M 3.7, 3.9 with the largest to date of M 4.0 today. These had been previously noted in this summary as:

 

"An unusual earthquake of M 3.9 occurred northeast of Australia in the Norfolk Island area. The remnants of Tropical Cyclone Lucas passed over this area several days ago after triggering a series of events north of this in the Loyalty Islands which has continuing moderate aftershocks still." (February 8, 2021)

 

This activity is located near the fifth node (72 degrees) from the M 7.1 in Honshu Japan of February 13. That event, in turn was located at the 11th node (65.4 degrees) from the series in the Loyalty Islands. Other areas at this distance from Japan include Samoa and Tonga where enhanced seismicity is likely at this time.

 

O: 17FEB2021 11:34:17  27.4S  170.5E ML=4.1  EMSC   NORFOLK ISLAND, AUSTRALIA REGI

P: 14FEB2021 131386    23.0S  171.0E 4.0-5.4 BCAAA  Loyalty Islands            

 

An unusual, moderate earthquake also occurred today in the western Sahara in Morocco with M 3.6-4.5. This event is near the antipode of the Loyalty Islands (180 degrees) and was probably enhanced by energy from that source where an M 7.7 occurred on February 10. The last earthquakes in this area of Morocco within about 300 km with M>=3.6 occurred as an M 3.8 on December 29, 2018; an M 4.4 on February 20, 2017 and an M 4.0 on January 29, 2015.

 

O: 18FEB2021 02:21:26  30.2N    9.8W ML=3.6  EMSC   MOROCCO                      

 

A moderate earthquake of M 5.4 also occurred today in southern Iran. NEIC reported it was felt with maximum intensity VI in Iran at Samiram, Esfahan, Shiraz, Fars and Ahwaz, Khuzestan. This is the strongest earthquake within about 200 km of this epicenter in southern Iran since an M 5.4 on January 5, 2011. The largest regional quake in the past 30 years was an M 6.2 on May 6, 1999.  Forecast 131591 had expected this activity within this area was like around February 21. Like smaller events in California, Norfolk Island and Mt. Rainier, Washington, this activity is located at the fifth node (72 degrees) from the M 7.1 in Honshu, Japan of February 13 and may have been promoted by energy from that source.

 

O: 17FEB2021 18:35:35  30.9N   51.5E Mw=5.4  EMSC   SOUTHERN IRAN                

P: 21FEB2021 131591    30.0N   51.0E 3.8-5.4 BAAAA  So. Iran                   

 

An unusual earthquake of M 2.5 was preceded by an M 2.0 foreshock in the Mount Rainier region of Washington State today. The only other event in the Mount Rainier area in the past year with M>=2.5 was an M 2.5 on August 16, 2020. Today's  activity follows activity in the Mount St. Helens area of Washington on February 7, 2021 and may indicate the area is becoming more volcanic at this time. When the Mt. St. Helens activity occurred this summary noted:

 

 

"An M 2.6-2.8 earthquake occurred today in the Mt. St. Helens area of Washington State. NEIC reported this earthquake of M 2.8 in Washington State was felt with intensity II-III in the area(s) of Washington State at Yacolt and Carnation.  The last earthquake in the Mt. St. Helens area of M>=2 was an M 2.4 on August 26, 2020. But the last earthquake in the area of M>=2.6 occurred nearly three years ago on May 28, 2018 with M 3.0. The last of significantly larger magnitude was an M 3.9 on January 3, 2018. Forecast 131013 had expected the area would\ seen enhanced seismicity around February 9. This epicenter is at the third node (120 degrees) from the South Shetland Islands M 7.1 of January 23, 2021 and at 101 degrees from the Mindanao quake of M 7.0 of January 21 and my have been enhanced by energy from those sources." (February 8, 2021)

 

Forecast 131316 had expected today's activity in the Mount Ranier area was likely in mid-February.

 

O: 18FEB2021 00:19:43  46.9N  121.8W Ml=2.0  EMSC   MOUNT RAINIER AREA, WASHINGTON

O: 18FEB2021 03:13:52  46.9N  121.8W Ml=2.5  EMSC   MOUNT RAINIER AREA, WASHINGTON

P: 12FEB2021 131316    46.9N  122.0W 2.0-4.2 CAAAA  Washington state, U.S.     

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: 17FEB2021 18:38:48  22.2N  121.4E ML=5.2  TAI    Hualien, Taiwan              

O: 17FEB2021 18:38:47  22.2N  121.4E Mw=5.1  EMSC   TAIWAN REGION                

O: 17FEB2021 12:07:37  22.9N  121.2E ML=4.1  TAI    Hualien, Taiwan              

O: 17FEB2021 18:38:47  22.2N  121.4E Mw=5.1  EMSC   TAIWAN REGION                

P: 17FEB2021 131201    22.0N  122.0E 4.0-5.3 AAAAA  Taiwan                     

P: 17FEB2021 131201    23.0N  121.0E 4.0-5.6 AAAAA  Taiwan                     

 

CWB reported this earthquake M 5.2 was felt with intensity IV in Taitung; III in Pingtung and I in Hualien, Kaohsiung, Tainan, Chiayi, Yunlin, Changhua and Miaoli Counties, Taiwan.

The M 4.1 was felt with intensity III in Taitung, and I in Hualien, Kaohsiung and Chiayi Counties, Taiwan.

 

O: 17FEB2021 23:59:49  17.8N   73.6E ML=3.1  EMSC   MAHARASHTRA, INDIA           

P: 16FEB2021 131157    17.0N   74.0E 3.5-4.9 AAAAA  Arabian Sea                

 

O: 17FEB2021 12:24:49  26.6N   92.7E mb=4.7  EMSC   ASSAM, INDIA                  

P: 18FEB2021 131528    26.0N   93.0E 4.0-5.6 AAAAA  Myanmar                    

 

The last earthquake of similar or larger magnitude in Assam, India was an M 4.7 on April 5, 2020.

NEIC reported this earthquake of M 4.7 in Assam, India was felt with intensity II-III in the area(s) of Assam, India with IV at Rangapara, Tezpur and Nagaon and in Shillong, Meghalaya and in Assam  with II-III in Golaghat, Bokokhat, North Guwahati, Gauhati, Dispur and II in Itanagar, Arunachal Pradesh.

 

O: 17FEB2021 17:32:34  36.7N   70.8E mb=4.1  EMSC   HINDU KUSH REGION, AFGHANISTAN

O: 17FEB2021 10:58:55  36.5N   69.8E mb=4.1  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 14FEB2021 131226    37.0N   71.0E 3.8-5.5 BAAAA  Hindu Kush/Pakistan        

P: 15FEB2021 131225    36.0N   72.0E 3.8-5.2 AABAA  Hindu Kush/Pakistan        

 

O: 17FEB2021 18:35:35  30.9N   51.5E Mw=5.4  EMSC   SOUTHERN IRAN                

P: 21FEB2021 131591    30.0N   51.0E 3.8-5.4 BAAAA  So. Iran                   

 

INDONESIA AND PHILIPPINES

 

O: 17FEB2021 21:34:44   1.1N  120.2E mb=4.4  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 20FEB2021 131438     0.0N  120.0E 4.0-5.3 BBAAA  Celebes Sea                

 

O: 18FEB2021 01:06:56   3.1S  140.0E ML=4.8  EMSC   PAPUA, INDONESIA             

P: 18FEB2021 131470     2.0S  140.0E 4.0-5.6 ABAAA  Papua New Guinea           

 

O: 18FEB2021 00:30:27   3.6N  126.4E ML=4.6  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 14FEB2021 131120     3.0N  127.0E 4.0-5.5 BAAAA  Halmahera                  

 

O: 17FEB2021 14:30:59   3.9N  117.4E ML=4.5  EMSC   KALIMANTAN, INDONESIA        

P: 20FEB2021 131438     0.0N  120.0E 4.0-5.3 BCCAA  Celebes Sea                

 

O: 17FEB2021 20:28:53   4.4S  133.0E mb=4.8  EMSC   NEAR S COAST OF PAPUA, INDONES

P: 17FEB2021 131153     2.0S  133.0E 4.0-5.6 ACAAA  West Irian, PNG            

 

O: 17FEB2021 09:48:03   6.0S  101.9E mb=4.5  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P: 17FEB2021 131149     6.0S  103.0E 4.0-5.7 AAAAA  So. of Sumatera            

 

O: 17FEB2021 13:03:41   6.6N  125.2E mb=4.8  EMSC   MINDANAO, PHILIPPINES        

P: 17FEB2021 131122     4.0N  125.0E 4.0-5.4 ACAAA  Mindanao, Philippines      

 

NEIC reported this earthquake of M 4.8 in Mindanao, Philippines was felt with intensity II-III in the area(s) of Mindanao, Philippines at Digos (IV), Rotonda, Paraiso, Buayan.

PHIVOLCS reported intensity IV in Magsaysay, Matanao, and Digo City, Davao Del Sur; Davao City; Malungon, Sarangani; III in Maiklala andTulunan, Cotabato; Santa Cruz, Davao Del Sur; Kidapawan City, Koronadal City, Tampakan and Tupi, South Cotabato; Alabel, Sarangani; II in Columbio, Sultan Kudarat, Bagumbayan and Isulan, Sultan Kudarat; Antipas, Cotabato; Polomolok, Norala, Surallah and Lake Sebu, South Cotabato, General Santos City; Malapatan, Sarangani and I in Magpet and Arakan, Cotabato; Kiamba and Maasim, Sarangani, Mindanao, Philippines.

 

O: 17FEB2021 11:55:52   7.6S  127.7E mb=4.1  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 19FEB2021 131455     7.0S  129.0E 4.0-5.4 AAAAA  Banda Sea                  

 

O: 17FEB2021 20:06:56   8.1S  118.0E ML=4.1  EMSC   SUMBAWA REGION, INDONESIA    

P: 18FEB2021 131479     9.0S  118.0E 4.0-5.3 AAAAA  Sumbawa Island area        

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 18FEB2021 05:19:51   8.3N   82.9W mb=4.2  EMSC   PANAMA-COSTA RICA BORDER REGIO

P: 23FEB2021 131446     8.0N   83.0W 3.5-5.2 BAAAA  Costa Rica                 

 

O: 17FEB2021 15:27:39  15.0N   92.5W mb=4.5  EMSC   CHIAPAS, MEXICO              

P: 19FEB2021 131492    15.0N   92.0W 3.5-5.1 AAAAA  Guatemala                  

 

O: 17FEB2021 08:09:22  15.5N   96.6W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 12FEB2021 131180    16.0N   96.0W 3.5-5.0 BAAAA  Oaxaca, Mexico              

 

O: 17FEB2021 19:45:48  17.2N   94.0W ML=4.1  EMSC   VERACRUZ, MEXICO             

O: 18FEB2021 02:48:57  17.5N   94.8W ML=4.2  EMSC   VERACRUZ, MEXICO             

P: 20FEB2021 131508    17.0N   96.0W 3.5-5.2 AAAAA  Oaxaca, Mexico              

 

O: 18FEB2021 06:09:41  18.3N   68.0W Md=3.9  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P: 19FEB2021 131510    18.0N   67.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O: 17FEB2021 17:13:04  19.2N   66.5W Md=3.2  EMSC   PUERTO RICO REGION

O: 18FEB2021 05:26:01  19.1N   66.4W Md=3.2  EMSC   PUERTO RICO REGION           

P: 17FEB2021 131181    19.0N   66.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O: 18FEB2021 01:39:38  20.0N   72.2W ML=3.2  EMSC   HAITI REGION                 

P: 17FEB2021 131187    20.0N   73.0W 3.0-4.7 AAAAA  Bahamas/No. Caribbean      

 

O: 17FEB2021 12:14:49  29.3S   69.3W mb=4.8  EMSC   SAN JUAN, ARGENTINA          

O: 17FEB2021 12:14     29.3S   69.6W mb=4.8  GUC    Coquimbo at La Serena, Paiguan

P: 18FEB2021 131727    30.0S   69.0W 4.0-5.7 AAAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity  III in  Coquimbo at La Serena, Paiguano and II in La Higuera and Atacama with III in Alto del Carmen, Copiapo, Los Loros, Tierra Amarilla, Vallenar and II in Caldera, Chile.

NEIC reported this earthquake of M 4.8 in Central Argentina was felt with intensity II-III in the area(s) at Ovalle, Coquimbo, Chile.

 

O: 17FEB2021 22:35:14  45.7S   77.5W mb=4.2  EMSC   OFF COAST OF AISEN, CHILE    

P: 16FEB2021 131421    43.0S   83.0W 4.0-5.5 ACCAA  Chile Rise                 

 

 

AFRICA AND EUROPE

 

O: 18FEB2021 02:21:26  30.2N    9.8W ML=3.6  EMSC   MOROCCO                      

 

O: 17FEB2021 21:13:11  34.0N   26.2E mb=4.2  EMSC   CRETE, GREECE                

P: 17FEB2021 131205    35.0N   27.0E 3.0-4.6 AAAAA  Aegean Sea                 

 

NEIC reported this earthquake of M 4.4 in Greece was felt with intensity II-IV in the area(s) of  Greece in Attiki at Athens, Moskhaton, Kalithea, Nea Smirni, Piraieus, Kaisariam, Glifada and Voula.

 

O: 17FEB2021 10:02:30  39.5N   40.3E ML=4.0  EMSC   EASTERN TURKEY               

P: 13FEB2021 131278    40.0N   41.0E 3.5-4.8 BAAAA  Caucasus/Caspian Sea       

P: 16FEB2021 131268    38.0N   39.0E 3.5-5.0 ABAAA  Turkey                      

 

O: 17FEB2021 10:37:56   8.5S   27.2E mb=4.7  EMSC   DEMOCRATIC REPUBLIC OF THE CON

P: 13FEB2021 131134     6.0S   30.0E 3.0-4.4 BCCAA  Lake Victoria area         

 

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

 

SOUTHWEST PACIFIC

 

O: 17FEB2021 11:31:59  17.5S  167.9E Mw=5.2  EMSC   VANUATU

O: 17FEB2021 11:45:17  17.5S  167.8E mb=4.9  EMSC   VANUATU

O: 17FEB2021 12:21:44  17.5S  167.7E Mw=5.5  EMSC   VANUATU

O: 17FEB2021 15:25:15  17.5S  167.6E mb=4.7  EMSC   VANUATU

O: 17FEB2021 09:30:35  17.5S  167.8E Mw=5.4  EMSC   VANUATU                      

P: 20FEB2021 131707    17.0S  167.0E 4.0-5.5 BAAAA  Vanuatu Islands            

 

O: 18FEB2021 06:37:31  18.9S  168.0E Mw=6.2  EMSC   VANUATU                      

P: 18FEB2021 131707    18.0S  168.0E 4.0-5.3 AAAAA  Vanuatu Islands            

 

O: 17FEB2021 09:36:14  20.1S  169.0E mb=5.2  EMSC   VANUATU                      

P: 16FEB2021 131394    20.0S  169.0E 4.0-5.3 AAAAA  Vanuatu Islands            

 

O: 17FEB2021 11:34:17  27.4S  170.5E ML=4.1  EMSC   NORFOLK ISLAND, AUSTRALIA REGI

P: 14FEB2021 131386    23.0S  171.0E 4.0-5.4 BCAAA  Loyalty Islands            

 

O: 18FEB2021 00:37:02  22.9S  172.4E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 17FEB2021 22:49:39  23.2S  171.9E Mw=6.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 17FEB2021 10:51:10  23.3S  171.9E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 17FEB2021 23:35:21  23.4S  171.8E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 17FEB2021 12:59:36  22.8S  172.5E Mw=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 14FEB2021 131386    23.0S  171.0E 4.0-5.4 BAAAA  Loyalty Islands            

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 18FEB2021 01:08:12  35.2S  178.6E ML=4.0  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 17FEB2021 131407    35.0S  179.0E 3.0-4.6 AAAAA  North Island, N.Z.         

 

O: 18FEB2021 01:19:59  45.1S  167.6E ML=3.7  EMSC   SOUTH ISLAND OF NEW ZEALAND  

P: 16FEB2021 131429    45.0S  168.0E 3.0-4.9 AAAAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

O: 17FEB2021 16:46:30  27.4N  128.6E ML=4.0  EMSC   RYUKYU ISLANDS, JAPAN        

P: 14FEB2021 131198    26.0N  128.0E 4.0-5.3 BBAAA  Ryukyu Islands              

 

O: 18FEB2021 02:52:30  37.7N  141.7E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 18FEB2021 06:02:42  37.8N  141.6E mb=4.5  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 17FEB2021 18:58:30  35.1N  137.3E ML=4.2  EMSC   EASTERN HONSHU, JAPAN        

P: 17FEB2021 131236    35.0N  136.0E 3.5-5.0 AAAAA  No. Honshu, Japan          

 

O: 17FEB2021 14:06:15  37.6N  141.9E mb=4.7  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 BAAAA  Off East Coast Honshu       

P: 20FEB2021 131575    37.0N  142.0E 4.0-5.5 BAAAA  Off East Coast Honshu      

 

O: 18FEB2021 07:01:08  42.0N  142.5E mb=4.1  EMSC   HOKKAIDO, JAPAN REGION       

P: 20FEB2021 131614    42.0N  144.0E 3.5-5.5 AAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 17FEB2021 22:27:56  32.8N  115.8W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 17FEB2021 131250    32.9N  115.6W 2.5-4.5 AAAAA  So. California             

 

O: 17FEB2021 07:49:33  33.3N  116.4W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 15FEB2021 131251    33.4N  116.7W 2.5-4.4 AAAAA  So. California             

 

O: 17FEB2021 22:43:28  35.6N  117.5W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 17FEB2021 131208    36.1N  118.1W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 17FEB2021 14:36:32  35.8N  120.6W Md=2.7  EMSC   CENTRAL CALIFORNIA           

P: 17FEB2021 131214    36.1N  120.1W 2.5-5.1 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in Central California was felt with intensity II-III in the area(s) of Central California with IV at San Miguel and II-III at Paso Robles, Atascadero, Cambria, San Luis Obispo and Los Banos.

 

O: 17FEB2021 09:13:36  37.6N  122.0W Md=2.6  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 15FEB2021 131216    37.3N  121.6W 2.5-4.8 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in the San Francisco, California was felt with intensity II-III in the area(s) of San Francisco, California with maximum intensity IV in Hayward, and II-III in Fremont, Union City, Newark.

 

O: 17FEB2021 23:26:00  38.2N  118.1W ml=2.2  EMSC   NEVADA                       

P: 22FEB2021 131545    38.0N  118.0W 2.5-4.9 BAAAA  California/Nevada area     

 

O: 17FEB2021 16:50:37  38.3N  119.3W ML=2.5  EMSC   CENTRAL CALIFORNIA           

P: 18FEB2021 131546    38.3N  119.3W 2.5-4.8 AAAAA  California/Nevada area     

 

 

ALASKA

 

O: 17FEB2021 20:36:52  56.6N  170.1W ml=3.3  EMSC   PRIBILOF ISLANDS, ALASKA REGIO

P: 16FEB2021 131341    54.0N  164.9W 3.5-5.0 ACCAA  Unimak Islands, Aleutians  

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 17FEB2021 17:46:16  42.0N  121.7W Ml=2.3  EMSC   OREGON                       

P: 18FEB2021 131638    42.2N  120.3W 2.0-3.8 AABAA  Oregon state, U.S.         

 

O: 18FEB2021 00:19:43  46.9N  121.8W Ml=2.0  EMSC   MOUNT RAINIER AREA, WASHINGTON

O: 18FEB2021 03:13:52  46.9N  121.8W Ml=2.5  EMSC   MOUNT RAINIER AREA, WASHINGTON

P: 12FEB2021 131316    46.9N  122.0W 2.0-4.2 CAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 17FEB2021 18:46:51  44.3N  115.2W Ml=2.4  EMSC   SOUTHERN IDAHO

O: 18FEB2021 00:02:50  44.3N  115.2W Ml=2.3  EMSC   SOUTHERN IDAHO

O: 17FEB2021 18:21:10  44.3N  115.2W Ml=2.2  EMSC   SOUTHERN IDAHO               

P: 15FEB2021 131291    44.5N  115.3W 2.0-4.1 AAAAA  Montana/Idaho              

 

O: 17FEB2021 21:04:33  44.8N  112.4W ML=2.6  EMSC   WESTERN MONTANA              

P: 16FEB2021 131292    44.9N  113.4W 2.0-4.4 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 17FEB2021 10:48:03  35.1N   95.3W ML=2.6  EMSC   OKLAHOMA                     

P: 12FEB2021 131263    35.0N   96.0W 2.0-4.0 BAAAA  Southern Plains            

 

O: 17FEB2021 08:11:21  47.5N   70.3W MB=1.4  ECAN Charlevoix Seismic Zone        

P: 17FEB2021 131296    47.3N   70.5W 2.0-3.9 AAAAA  New England                

 

HAWAII

 

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

 

MODERATELY STRONG QUAKE SHAKES GREECE

 

EARTHQUAKE SUMMARY FOR FEBRUARY 16, 2021

 

The strongest earthquake in the world today was an M 5.1-5.5 in northern Greece. NEIC reported it was felt with intensity VII in Ahaia, Kamarai, Greece; V in Rododafni; IV in Diakopton, Mesolongion, and III in Patrai, Royitika and Lama. Greece. NEIC reported an aftershocks of M 4.5 in Ahaia, Greece was felt with intensity II-III in the area(s) of Ahaia, Greece in Rododafni (V) and Diakopton.

The last earthquake of M>=5.5 within about 200 km of this epicenter was an M 5.7 on March 21, 2020 and prior to that an M 5.4 on February 5, 2019. A strong quake  about 200 km southwest of today's epicenter occurred on October 25, 2018. Today's event may have been triggered by effects from a strong geomagnetic storm at high latitudes occurred today with the following parameters:

 

"The geomagnetic field saw active  conditions today. The AP level was 15.  High latitude geomagnetic field  saw stormy conditions with AP 45. This storm is the strongest at high latitudes since AP at high latitudes reached 45 on November 22, 2020. Strong excursions in the geomagnetic field can be accompanied by enhanced seismicity at high latitudes and near the geomagnetic equator in the next several days." (February 16, 2021)

 

Forecast 131235 had expected today's event within about 150 km was likely around  February 17 in Greece.

 

O: 17FEB2021 04:38:50  38.4N   22.0E ML=4.0  EMSC   GREECE

O: 17FEB2021 03:36:05  38.4N   22.0E mb=5.1  EMSC   GREECE                        

O: 17FEB2021 03:36:05  38.4N   22.0E mb=5.5  ANSS   GREECE                       

P: 17FEB2021 131235    39.0N   20.0E 3.0-4.8 AABAA  No. Greece                 

 

An earthquake of M 5.4 also occurred today in the area of the north coast of Papua, Indonesia. The last earthquakes within about 200 km of this epicenter with M>=5.4 occurred on March 26, 2020 and an M 6.0 on January 18, 2020. Strong earthquakes in this are can help promoted seismicity in Southern California at 103 degrees distance. Forecast 131154 had expected today's event within about 100 km was likely around February 17.

 

O: 16FEB2021 19:09:38   2.9S  139.2E Mw=5.4  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 17FEB2021 131154     2.0S  139.0E 4.0-5.6 AAAAA  West Irian, PNG            

 

The strongest earthquake in the U.S. or Canada today was an M 4.0 in the Vancouver, British Columbia area of Canada. The last earthquake of M>=4 within about 100 km of this epicenter was an M 5.4 on July 22, 2020 and an M 4.7 on May 10, 2020.  Forecast 131315 had expected today's event within about 100 km was likely around February 13.

 

O: 16FEB2021 23:28:36  48.1N  130.6W MB=4.0  ECAN of Port Alice, BC              

P: 13FEB2021 131315    47.9N  129.1W 2.8-5.2 BAAAA  Vancouver Island area      

 

Moderate aftershocks were absent in the areas of Eastern Honshu, Japan and the Loyalty Islands today. Activity in central Vanuatu was also reduced. This is odd behavior for aftershock sequences and enhanced seismicity in these areas is expected to resume in the next several days. Forecast 131242 expects more seismicity in Japan in the next several days.

 

O: 16FEB2021 13:59:32  37.9N  140.8E mb=4.3  EMSC   EASTERN HONSHU, JAPAN        

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

O: 16FEB2021 22:07:24  38.4N  141.8E mb=4.6  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

Forecast 131707 had expected the activity in Vanuatu to continue through at least February 18.

 

O: 16FEB2021 16:16:03  17.7S  167.4E mb=4.9  EMSC   VANUATU

O: 17FEB2021 03:58:38  17.7S  167.6E mb=5.0  EMSC   VANUATU

O: 16FEB2021 16:12:16  17.7S  167.5E mb=5.0  EMSC   VANUATU                      

P: 18FEB2021 131707    18.0S  168.0E 4.0-5.3 AAAAA  Vanuatu 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: 16FEB2021 09:55:30  52.0N  157.1E mb=5.3  EMSC   KAMCHATKA PENINSULA, RUSSIA  

P: 13FEB2021 131330    52.0N  158.0E 4.0-5.7 BAAAA  Kamchatka                  

 

O: 16FEB2021 09:57:54  37.7N   72.6E mb=4.0  EMSC   TAJIKISTAN                   

P: 14FEB2021 131226    37.0N   71.0E 3.8-5.5 AAAAA  Hindu Kush/Pakistan        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 16FEB2021 19:09:38   2.9S  139.2E Mw=5.4  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 17FEB2021 131154     2.0S  139.0E 4.0-5.6 AAAAA  West Irian, PNG            

 

O: 16FEB2021 21:22:18   5.4S  103.2E ML=4.1  EMSC   SOUTHERN SUMATRA, INDONESIA

O: 16FEB2021 11:26:01   4.9S  103.1E ML=4.8  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 21FEB2021 131475     4.0S  102.0E 4.0-5.4 BAAAA  So. of Sumatera            

 

O: 16FEB2021 08:42:11   6.1S  112.1E Mw=5.1  EMSC   JAVA, INDONESIA              

P: 17FEB2021 131145     6.0S  113.0E 4.0-5.6 AAAAA  So. of Bali                

 

O: 17FEB2021 05:00:38   6.2S  147.3E mb=5.3  EMSC   EASTERN NEW GUINEA REG., P.N.G

P: 17FEB2021 131136     6.0S  147.0E 4.0-5.3 AAAAA  New Ireland                

 

NEIC reported this earthquake of M 5.3 in Papua New Guinea was felt with intensity II-III in the area(s) of Papua New Guinea at Lae, Morobe PNG.

 

O: 16FEB2021 23:49:10   7.1S  125.3E ML=4.4  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 17FEB2021 131127     6.0S  125.0E 4.0-5.4 ABAAA  Banda Sea                  

 

O: 16FEB2021 15:48:00   7.1S  129.7E mb=4.1  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 19FEB2021 131455     7.0S  129.0E 4.0-5.4 BAAAA  Banda Sea                  

 

O: 16FEB2021 07:24:36   8.2S  106.9E ML=4.3  EMSC   SOUTH OF JAVA, INDONESIA     

P: 21FEB2021 131473     7.0S  106.0E 4.0-5.6 BBAAA  So. of Java                 

 

O: 16FEB2021 14:20:46   9.3N  127.1E mb=4.5  EMSC   PHILIPPINE ISLANDS REGION    

P: 13FEB2021 131168    10.0N  126.0E 3.5-4.9 BAAAA  Luzon, Philippines         

 

O: 16FEB2021 09:01:39  12.5N   98.1E ML=3.5  EMSC   MALAY PENINSULA, MYANMAR      

P: 17FEB2021 131155    10.0N   93.0E 4.0-5.4 ACCAA  Andaman Islands            

 

 

CENTRAL AND SOUTH AMERICA

 

O: 17FEB2021 01:26:39  13.2N   89.8W ML=4.3  EMSC   OFFSHORE EL SALVADOR         

P: 17FEB2021 131161    13.0N   89.0W 3.5-5.3 AAAAA  Coast of Central America   

 

O: 16FEB2021 12:40:17  15.3N   92.8W ML=4.0  EMSC   CHIAPAS, MEXICO              

P: 17FEB2021 131163    16.0N   92.0W 3.5-5.1 AAAAA  Guatemala                  

 

O: 16FEB2021 17:04:41  16.3S   72.9W ML=4.0  EMSC   NEAR COAST OF SOUTHERN PERU  

P: 13FEB2021 131374    16.0S   71.0W 4.0-5.6 BABAA  So. Peru/Bolivia           

 

O: 16FEB2021 12:56:17  18.0N   67.0W Md=3.5  EMSC   PUERTO RICO                  

P: 19FEB2021 131510    18.0N   67.0W 3.4-5.0 BAAAA  Puerto Rico                 

 

O: 16FEB2021 23:04:18  19.0N   66.3W Md=3.0  EMSC   PUERTO RICO REGION

O: 16FEB2021 18:53:55  19.1N   66.6W Md=3.0  EMSC   PUERTO RICO REGION

O: 17FEB2021 02:58:09  18.8N   66.1W Md=3.0  EMSC   PUERTO RICO REGION           

P: 17FEB2021 131181    18.0N   66.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O: 16FEB2021 06:46:25  21.3S   67.2W mb=4.4  EMSC   POTOSI, BOLIVIA              

P: 12FEB2021 131382    22.0S   68.0W 4.0-5.6 BAAAA  Argentina                  

 

O: 17FEB2021 03:25:29  25.1S   71.1W mb=4.4  EMSC   OFF COAST OF ANTOFAGASTA, CHIL

P: 17FEB2021 131383    26.0S   71.0W 4.0-5.4 AAAAA  Coast Central Chile        

 

 

AFRICA AND EUROPE

 

O: 17FEB2021 04:38:50  38.4N   22.0E ML=4.0  EMSC   GREECE

O: 17FEB2021 03:36:05  38.4N   22.0E mb=5.1  EMSC   GREECE                       

O: 17FEB2021 03:36:05  38.4N   22.0E mb=5.5  ANSS   GREECE                       

P: 17FEB2021 131235    39.0N   20.0E 3.0-4.8 AABAA  No. Greece                 

 

O: 16FEB2021 22:38:53  41.0N   45.8E mb=3.8  EMSC   AZERBAIJAN                   

P: 17FEB2021 131278    40.0N   44.0E 3.5-5.1 AABAA  Caucasus/Caspian Sea       

 

SOUTHWEST PACIFIC

 

O: 16FEB2021 08:07:23  15.7S  167.7E mb=5.1  EMSC   VANUATU                      

P: 17FEB2021 131380    16.0S  168.0E 4.0-5.6 AAAAA  Vanuatu Islands            

 

O: 16FEB2021 16:16:03  17.7S  167.4E mb=4.9  EMSC   VANUATU

O: 17FEB2021 03:58:38  17.7S  167.6E mb=5.0  EMSC   VANUATU

O: 16FEB2021 16:12:16  17.7S  167.5E mb=5.0  EMSC   VANUATU                      

P: 18FEB2021 131707    18.0S  168.0E 4.0-5.3 AAAAA  Vanuatu Islands            

 

O: 16FEB2021 15:54:08  18.9S  173.6W Mw=5.2  EMSC   TONGA                        

P: 15FEB2021 131377    19.0S  173.0W 4.0-5.6 AAAAA  Tonga Islands              

 

NEIC reported this earthquake of M 5.2 in Tonga was felt with intensity II-III in the area(s) of Tonga at Neiafu Vava'u.

 

O: 16FEB2021 16:49:39  24.3S  179.4W mb=4.9  EMSC   SOUTH OF FIJI ISLANDS        

P: 13FEB2021 131392    24.0S  177.0W 4.0-5.9 BABAA  Tonga Islands               

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

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

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

O: 16FEB2021 15:57:57  30.0N  131.1E mb=4.9  EMSC   KYUSHU, JAPAN                

P: 16FEB2021 131229    30.0N  129.0E 3.5-5.0 AABAA  Kyushu, Japan area         

P: 17FEB2021 131192    29.0N  130.0E 4.0-5.3 AAAAA  Kyushu Japan               

 

O: 16FEB2021 13:59:32  37.9N  140.8E mb=4.3  EMSC   EASTERN HONSHU, JAPAN        

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

O: 16FEB2021 22:07:24  38.4N  141.8E mb=4.6  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

O: 17FEB2021 00:44:08  49.1N  157.9E mb=4.3  EMSC   EAST OF KURIL ISLANDS        

P: 19FEB2021 131627    49.0N  155.0E 3.5-5.5 AABAA  NE Pacific                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 16FEB2021 22:27:17  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

O: 16FEB2021 22:42:08  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

P: 17FEB2021 131250    32.9N  115.6W 2.5-4.5 AAAAA  So. California             

 

O: 16FEB2021 21:52:40  38.2N  117.8W ml=2.0  EMSC   NEVADA

O: 16FEB2021 12:48:09  38.1N  118.2W ml=2.0  EMSC   NEVADA                       

O: 16FEB2021 18:30:28  38.2N  117.9W ml=2.4  EMSC   NEVADA                        

P: 22FEB2021 131545    38.0N  118.0W 2.5-4.9 CAAAA  California/Nevada area     

 

O: 17FEB2021 00:23:18  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 17FEB2021 131217    38.8N  122.7W 2.5-4.6 AAAAA  Central California          

 

ALASKA

 

O: 16FEB2021 16:58:46  51.2N  178.3W mb=3.9  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 13FEB2021 131323    50.9N  179.0W 3.5-5.0 BAAAA  Andreanoff Isls, Aleutians 

 

O: 16FEB2021 19:50:07  51.6N  175.1W ml=3.6  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 17FEB2021 131324    51.1N  175.8W 3.5-5.1 AAAAA  Andreanoff Isls, Aleutians 

 

O: 16FEB2021 23:18:55  54.6N  159.7W mb=3.7  EMSC   SOUTH OF ALASKA              

P: 14FEB2021 131321    54.8N  159.3W 3.5-5.3 AAAAA  Alaska Peninsula           

 

O: 16FEB2021 08:24:07  58.4N  151.4W ML=3.0  EMSC   KODIAK ISLAND REGION, ALASKA 

O: 16FEB2021 22:18:48  59.5N  153.0W ML=3.7  EMSC   SOUTHERN ALASKA              

O: 16FEB2021 21:16:08  60.3N  153.5W ML=3.1  EMSC   SOUTHERN ALASKA

P: 13FEB2021 131345    60.0N  153.5W 3.2-5.3 BAAAA  Central Alaska             

 

O: 17FEB2021 00:17:40  68.1N  162.1W ml=3.1  EMSC   NORTHERN ALASKA              

 

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

 

O: 16FEB2021 23:28:36  49.1N  128.1W MB=3.6  ECAN Port Alice, BC                  

P: 15FEB2021 131315    48.3N  128.5W 2.8-5.1 AAAAA  Vancouver Island area      

 

O: 16FEB2021 23:28:36  48.1N  130.6W MB=4.0  ECAN of Port Alice, BC              

P: 13FEB2021 131315    47.9N  129.1W 2.8-5.2 BAAAA  Vancouver Island area       

 

ROCKY MOUNTAINS REGION

 

O: 17FEB2021 00:06:14  37.1N  105.0W mb=2.9  EMSC   COLORADO                     

P: 15FEB2021 131222    37.4N  104.7W 2.0-4.1 AAAAA  Colorado area              

P: 20FEB2021 131555    37.0N  105.2W 2.0-4.3 BAAAA  Colorado area              

 

O: 16FEB2021 16:58:42  38.1N  112.8W ML=2.7  EMSC   UTAH                         

P: 16FEB2021 131270    38.3N  112.2W 2.0-3.9 AAAAA  Utah area                  

 

NEIC reported this earthquake of M 2.6 in Utah was felt with intensity II-III in the area(s) of Utah at Hurricane.

 

EASTERN U.S./CANADA

 

O: 16FEB2021 21:24:28  34.4N   97.4W ML=2.3  EMSC   OKLAHOMA

O: 17FEB2021 02:25:43  34.4N   97.4W ML=2.8  EMSC   OKLAHOMA

O: 16FEB2021 18:19:36  34.4N   97.5W ML=2.1  EMSC   OKLAHOMA                      

P: 15FEB2021 131264    35.0N   97.0W 2.0-4.0 AAAAA  Southern Plains            

 

O: 16FEB2021 23:49:22  36.3N   97.5W ML=2.1  EMSC   OKLAHOMA                     

P: 16FEB2021 131264    36.0N   97.0W 2.0-4.3 AAAAA  Southern Plains             

 

O: 16FEB2021 07:14:13  35.8N   92.4W Md=2.2  EMSC   ARKANSAS                     

P: 17FEB2021 131233    35.0N   92.0W 2.0-3.8 AAAAA  New Madrid area            

 

O: 16FEB2021 16:43:06  44.6N   56.3W ML=3.3  EMSC   NORTH ATLANTIC OCEAN         

 

O: 16FEB2021 16:43:06  44.6N   56.3W MB=3.3  ECAN Grand Bank, NL                 

 

O: 15FEB2021 18:58:07  49.0N   68.0W MB=2.3  ECAN Baie-Comeau, QC                

P: 14FEB2021 131289    49.3N   67.5W 2.0-3.8 AAAAA  Maine                      

 

HAWAII

 

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

 

STRONG EARTHQUAKES SHAKE CENTRAL VANUATU

 

EARTHQUAKE SUMMARY FOR FEBRUARY 15, 2021

 

A series of strong earthquakes hit the area of central Vanuatu today. These events of  M 5.4, 5.7 and 6.2 are located about 600 km northwest of the M 7.7 in the Loyalty Islands of February 10. These events were felt with intensity IV in Vila Shefa, Vanuatu according to NEIC. A foreshock of M 5.1 was also felt with intensity III in Vila Shefa. The strongest of today's quakes  - the M 6.2 occurred near the sub-solar point on the earth at the time of this event. The sub-solar point is the point on the earth which at which the sun is directly overhead at local solar noon. It is at this point in space and time where tidal stresses are maximized. The M 6.2 occurred within about 5 minutes of local solar noon.

 

A foreshock of M 5.3 occurred yesterday at the same epicenter. This summary noted this event because it is exactly at the sixth node (60.0 degrees) from  the M 7.1 in Honshu, Japan of February 13. It had been noted in the previous issue of this summary as:

 

"An interesting M 5.3 also occurred north of the Loyalty Islands today in the area of central Vanuatu. This is in a volcanic area and may reflect volcanism beginning after the strong regional activity in the the Loyalty Islands.  This event is located at 60.0 degrees (node 6) from the M 7.1 in Honshu, Japan of  February 13 and was probably triggered by energy from that source.  The area often sees a series of events when a moderate quake occurs. Watch for additional and perhaps larger events in this region of Vanuatu in coming days.

 

This epicenter is near the Northeast Shepherd Islands, Kuwae and Epi Volcanoes in Vanuatu and may have been associated with regional volcanism in this area of Pele Volcano, of central Vanuatu. It is near Port Vila, a major city in Vanuatu. (February 14-15, 2021) 

                                     

The last earthquake of M>=6.2 within about 150 km of today's activity occurred in Vanuatu on  January 23, 2016 with M 6.8.  Forecasts 131076 and 131380 had expected this activity was likely within about  100 km between February 7 and 17. The last earthquake within this area of M>=5.3 Today's activity occurred at the sixth node (60 degrees) from the M 7.1 in Honshu, Japan of February 13 and was probably promoted by energy from that source.

 

O: 15FEB2021 10:34:22  17.7S  167.8E mb=4.9  EMSC   VANUATU

O: 15FEB2021 20:04:47  17.7S  167.9E mb=5.1  EMSC   VANUATU

O: 16FEB2021 00:49:25  17.7S  167.6E Mw=6.2  EMSC   VANUATU

O: 16FEB2021 01:31:59  17.7S  167.8E Mw=5.7  EMSC   VANUATU

O: 15FEB2021 16:51:30  17.8S  167.6E mb=4.9  EMSC   VANUATU

O: 16FEB2021 03:37:10  17.9S  167.7E Mw=5.3  EMSC   VANUATU

O: 16FEB2021 04:44:17  17.9S  167.8E mb=5.0  EMSC   VANUATU

O: 16FEB2021 01:22:19  17.6S  167.8E mb=5.4  EMSC   VANUATU                      

P:  7FEB2021 131076    17.0S  167.0E 4.0-5.4 CAAAA  Vanuatu Islands            

P: 17FEB2021 131380    16.0S  168.0E 4.0-5.6 ABAAA  Vanuatu Islands            

 

Aftershocks of M 5.3 occurred in the region off the east coast of Honshu, Japan today. These were reported by NEIC to be felt with intensity II-III in Fukushima and Miyagi, Japan. Forecast 131242 had expected this activity within about 50 km was likely around February 14.

 

O: 16FEB2021 00:48:30  37.6N  141.6E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 15FEB2021 11:27:19  37.7N  141.8E mb=4.2  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 15FEB2021 11:59:50  37.7N  141.6E mb=4.4  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 15FEB2021 12:26:05  37.6N  141.5E Mw=5.3  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

Aftershocks also continued today in the Loyalty Islands south of Vanuatu. These follow the M 7.7 in the Loyalty Islands of February 10. Forecast 131386 had expected this activity was likely around February 14.

 

O: 15FEB2021 10:07:02  22.9S  172.6E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 15FEB2021 21:21:05  23.2S  171.3E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 15FEB2021 21:26:49  23.2S  171.6E mb=5.4  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 15FEB2021 14:06:44  22.7S  172.1E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 14FEB2021 131386    22.0S  172.0E 4.0-5.3 AAAAA  Loyalty Islands            

P: 14FEB2021 131386    23.0S  171.0E 4.0-5.4 AAAAA  Loyalty Islands            

 

The most active area of the U.S. or Canada today occurred near the North Geomagnetic Pole in the Pond Inlet, Nunavit area of Canada. The largest in a swarm of four minor events in this area today occurred with M 3.3 and 3.0 within five minutes of local solar midnight and were probably promoted by tidal stresses which maximize near this hour of the day. The last events of M>=3.3 in this area were an M 4.6 on October 22, 2019 and February 12, 2015.  Forecast 131360 had expected activity within about 100 km of these epicenters between February 13 and 16. This activity is at the third node (120 degrees) from the Loyalty Islands and may have been promoted by energy from that area.

 

O: 15FEB2021 05:52:55  72.3N   75.8W MB=2.9  ECAN Pond Inlet, NU   

O: 15FEB2021 04:59:53  72.2N   75.8W MB=3.0  ECAN Pond Inlet, NU   

O: 15FEB2021 04:58:41  72.2N   75.8W MB=3.3  ECAN Pond Inlet, NU   

O: 14FEB2021 13:40:46  72.3N   75.7W MB=2.4  ECAN Pond Inlet, NU                 

P: 13FEB2021 131360    73.3N   73.5W 2.5-3.9 AAAAA  Baffin/Davis Strait Canada 

P: 16FEB2021 131360    71.0N   75.0W 2.5-4.1 AAAAA  Baffin/Davis Strait Canada 

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: 15FEB2021 08:23:15  28.1N  105.0E mb=4.6  EMSC   EASTERN SICHUAN, CHINA       

P: 15FEB2021 131195    27.0N  104.0E 4.0-5.4 ABAAA  Myanmar                     

 

O: 15FEB2021 23:17:09  41.8N   82.9E mb=4.0  EMSC   SOUTHERN XINJIANG, CHINA     

P: 11FEB2021 131288    42.0N   82.0E 4.0-5.6 BAAAA  Kirgizstan/Xinjiang        

 

O: 15FEB2021 09:02:24  54.2N  158.1E mb=4.0  EMSC   KAMCHATKA PENINSULA, RUSSIA  

P: 16FEB2021 131330    54.0N  159.0E 4.0-6.1 AAAAA  Kamchatka                  

 

O: 15FEB2021 22:24:32  54.5N  161.5E mb=4.1  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  6FEB2021 131022    54.0N  161.0E 4.0-5.9 CAAAA  E. of Kamchatka            

 

O: 15FEB2021 14:23:11  51.6N  100.3E mb=4.9  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 17FEB2021 131339    51.0N   98.0E 3.0-4.4 AABAA  So. Siberia                

 

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

 

INDONESIA AND PHILIPPINES

 

O: 15FEB2021 10:16:18   4.2S  133.6E ML=4.0  EMSC   NEAR S COAST OF PAPUA, INDONES

P:  8FEB2021 130851     3.0S  134.0E 4.0-5.3 CBAAA  West Irian, PNG            

P: 17FEB2021 131153     2.0S  133.0E 4.0-5.6 ACAAA  West Irian, PNG            

 

O: 15FEB2021 16:11:47   4.7S  125.8E ML=4.0  EMSC   BANDA SEA                    

P: 17FEB2021 131130     5.0S  126.0E 4.0-5.4 AAAAA  Ceram area                 

 

O: 15FEB2021 22:58:15   5.5S  102.3E ML=4.1  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 11FEB2021 131149     6.0S  102.0E 4.0-5.4 BAAAA  So. of Sumatera            

P: 17FEB2021 131149     6.0S  103.0E 4.0-5.7 AAAAA  So. of Sumatera            

 

O: 16FEB2021 05:10:25   6.3S  103.7E mb=4.9  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P: 13FEB2021 131149     6.0S  104.0E 4.0-5.8 BAAAA  So. of Sumatera            

P: 17FEB2021 131149     6.0S  103.0E 4.0-5.7 AAAAA  So. of Sumatera            

P: 17FEB2021 131146     6.0S  105.0E 4.0-5.6 AAAAA  So. of Java                

 

O: 15FEB2021 13:53:20   9.3N   93.6E mb=4.3  EMSC   NICOBAR ISLANDS, INDIA REGION

P: 17FEB2021 131155    10.0N   93.0E 4.0-5.4 AAAAA  Andaman Islands            

 

 

CENTRAL AND SOUTH AMERICA

 

O: 16FEB2021 05:14     32.0S   71.7W mb=4.0  GUC    Coquimbo at Salamanca and III

P: 14FEB2021 131398    32.0S   72.0W 4.0-6.1 AAAAA  Central Chile              

 

GUC reported this earthquake was felt with intensity   IV in  Coquimbo at Salamanca and III in Monte Patria, Chile.

 

O: 15FEB2021 20:48:53   3.9S   77.2W mb=4.6  EMSC   PERU-ECUADOR BORDER REGION   

P: 11FEB2021 131131     4.0S   80.0W 4.0-5.8 BACAA  Ecuador                    

 

O: 16FEB2021 02:00:30   8.6N   83.3W ML=4.0  EMSC   COSTA RICA

O: 16FEB2021 01:31:29   8.6N   83.2W mb=4.6  EMSC   COSTA RICA                   

P: 17FEB2021 131158    10.0N   84.0W 3.5-5.5 ABAAA  Caribbean Sea              

 

NEIC reported this earthquake of M 4.6 in Costa Rica and Panama was felt with intensity II-III in the area(s) of Costa Rica and Panama at Nueyo Vigia, Colon, Pueblo Nuevo and Boquiete Chiriqui and in Costa Rica at Golfito.

 

O: 15FEB2021 10:32:45   8.6S   81.0W mb=5.0  EMSC   OFF COAST OF NORTHERN PERU   

P: 13FEB2021 131141     9.0S   81.0W 4.0-5.5 AAAAA  No. Peru                   

 

O: 15FEB2021 12:12:51   8.7S   74.4W mb=4.5  EMSC   CENTRAL PERU                 

P: 17FEB2021 131128     8.0S   74.0W 3.5-5.0 AAAAA  Brazil                     

 

O: 15FEB2021 18:44:29  11.5N   86.7W ML=3.9  EMSC   NEAR COAST OF NICARAGUA      

P: 13FEB2021 131176    12.0N   86.0W 3.5-5.4 AAAAA  Nicaragua                   

 

O: 15FEB2021 09:57:24  13.8N   93.3W ML=3.9  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 16FEB2021 131159    14.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 15FEB2021 17:25:33  16.2N   98.0W ML=4.2  EMSC   OAXACA, MEXICO                

P: 15FEB2021 131180    15.0N   98.0W 3.5-5.1 ABAAA  Oaxaca, Mexico             

 

O: 15FEB2021 20:47:06  16.9N   95.4W ML=3.9  EMSC   OAXACA, MEXICO               

P: 17FEB2021 131160    16.0N   95.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O: 15FEB2021 18:06:11  17.1N   99.6W ML=4.1  EMSC   GUERRERO, MEXICO             

P: 16FEB2021 131180    17.0N  100.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 15FEB2021 13:44:18  17.6S   69.8W mb=4.4  EMSC   SOUTHERN PERU                

P: 11FEB2021 131375    18.0S   69.0W 4.0-5.6 BAAAA  So. Peru/Bolivia           

P: 13FEB2021 131375    18.0S   72.0W 4.0-5.6 AABAA  So. Peru/Bolivia           

 

O: 15FEB2021 12:53:58  18.2N   67.1W Md=3.0  EMSC   PUERTO RICO

O: 15FEB2021 09:07:23  18.0N   67.0W Md=3.0  EMSC   PUERTO RICO                  

P: 11FEB2021 131181    18.0N   67.0W 3.4-5.1 BAAAA  Puerto Rico                

P: 17FEB2021 131181    18.0N   66.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O: 15FEB2021 09:56:06  19.8S   69.3W mb=4.7  EMSC   TARAPACA, CHILE              

O: 16FEB2021 03:49:32  20.8S   68.5W mb=4.1  EMSC   POTOSI, BOLIVIA              

P: 12FEB2021 131384    21.0S   69.0W 4.0-5.6 BAAAA  Coast No. Chile            

 

NEIC reported this earthquake of M 4.7 in northern Chile was felt with intensity II-III in the area(s) of northern Chile in Iquique, Tarapaca.

 

O: 15FEB2021 13:49:57  23.1S   66.3W mb=4.3  EMSC   JUJUY, ARGENTINA             

O: 15FEB2021 10:41:43  24.0S   67.1W mb=4.3  EMSC   SALTA, ARGENTINA             

P: 15FEB2021 131382    24.0S   66.0W 4.0-5.9 AAAAA  Argentina                  

 

O: 16FEB2021 05:14:30  32.0S   71.7W ML=4.0  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 14FEB2021 131398    32.0S   72.0W 4.0-6.1 AAAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O: 15FEB2021 10:09:18  37.2N    3.7W ML=3.5  EMSC   SPAIN                        

P: 12FEB2021 131231    37.0N    3.0W 3.5-5.1 BAAAA  Morocco/Spain              

 

O: 16FEB2021 06:24:10  39.0N   26.1E ML=4.0  EMSC   NEAR THE COAST OF WESTERN TURK

P: 12FEB2021 131206    38.0N   26.0E 3.0-4.5 BAAAA  Aegean Sea                 

 

O: 15FEB2021 09:14:44  40.2N   25.1E ML=3.9  EMSC   AEGEAN SEA                   

P: 13FEB2021 131309    41.0N   27.0E 3.0-5.3 AABAA  Romania/NW Turkey          

 

O: 15FEB2021 18:27:50  40.5N   45.3E mb=4.0  EMSC   ARMENIA                      

P: 17FEB2021 131278    40.0N   44.0E 3.5-5.1 AAAAA  Caucasus/Caspian Sea       

 

O: 15FEB2021 16:49:25  41.8N   49.1E mb=3.9  EMSC   CASPIAN SEA, OFFSHORE AZERBAIJ

P: 11FEB2021 131286    40.0N   50.0E 4.0-5.5 BBAAA  Kazakhstan                 

 

O: 15FEB2021 15:58:07  43.7N   45.5E mb=4.0  EMSC   CAUCASUS REGION, RUSSIA      

P: 17FEB2021 131278    43.0N   44.0E 3.5-5.1 AAAAA  Caucasus/Caspian Sea       

 

 

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

 

SOUTHWEST PACIFIC

 

O: 16FEB2021 06:42:01  13.4S  166.9E mb=5.1  EMSC   VANUATU                      

P: 13FEB2021 131380    14.0S  167.0E 4.0-5.9 BAAAA  Vanuatu Islands            

 

O: 15FEB2021 09:13:50  19.5S  168.1E mb=4.7  EMSC   VANUATU                      

P: 16FEB2021 131394    20.0S  169.0E 4.0-5.3 AAAAA  Vanuatu Islands            

 

O: 15FEB2021 07:08:06  23.9S  179.5E mb=4.5  EMSC   SOUTH OF FIJI ISLANDS        

P: 15FEB2021 131393    25.0S  179.0E 4.0-5.4 ABAAA  Tonga/Fiji                 

 

O: 15FEB2021 10:07:02  22.9S  172.6E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 15FEB2021 21:21:05  23.2S  171.3E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 15FEB2021 21:26:49  23.2S  171.6E mb=5.4  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 15FEB2021 14:06:44  22.7S  172.1E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 14FEB2021 131386    22.0S  172.0E 4.0-5.3 AAAAA  Loyalty Islands            

P: 14FEB2021 131386    23.0S  171.0E 4.0-5.4 AAAAA  Loyalty Islands            

 

O: 15FEB2021 10:34:22  17.7S  167.8E mb=4.9  EMSC   VANUATU

O: 15FEB2021 20:04:47  17.7S  167.9E mb=5.1  EMSC   VANUATU

O: 16FEB2021 00:49:25  17.7S  167.6E Mw=6.2  EMSC   VANUATU

O: 16FEB2021 01:31:59  17.7S  167.8E Mw=5.7  EMSC   VANUATU

O: 15FEB2021 16:51:30  17.8S  167.6E mb=4.9  EMSC   VANUATU

O: 16FEB2021 03:37:10  17.9S  167.7E Mw=5.3  EMSC   VANUATU

O: 16FEB2021 04:44:17  17.9S  167.8E mb=5.0  EMSC   VANUATU

O: 16FEB2021 01:22:19  17.6S  167.8E mb=5.4  EMSC   VANUATU                      

P:  7FEB2021 131076    17.0S  167.0E 4.0-5.4 CAAAA  Vanuatu Islands            

P: 17FEB2021 131380    16.0S  168.0E 4.0-5.6 ABAAA  Vanuatu Islands            

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 15FEB2021 13:57:20  35.3S  180.0E ML=3.6  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 17FEB2021 131407    35.0S  179.0E 3.0-4.6 AAAAA  North Island, N.Z.         

 

O: 16FEB2021 01:36:34  39.1S  174.4E ML=3.5  EMSC   NORTH ISLAND OF NEW ZEALAND  

P: 14FEB2021 131422    40.0S  174.0E 3.0-4.6 AAAAA  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: 16FEB2021 00:48:30  37.6N  141.6E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 15FEB2021 11:27:19  37.7N  141.8E mb=4.2  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 15FEB2021 11:59:50  37.7N  141.6E mb=4.4  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 15FEB2021 12:26:05  37.6N  141.5E Mw=5.3  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

O: 15FEB2021 21:20:02  46.9N  151.5E mb=4.9  EMSC   KURIL ISLANDS                

P: 17FEB2021 131313    47.0N  154.0E 3.5-5.6 AABAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 15FEB2021 20:36:18  32.7N  116.0W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 15FEB2021 12:08:55  32.8N  115.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 15FEB2021 16:13:24  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 17FEB2021 131250    32.9N  115.6W 2.5-4.5 AAAAA  So. California             

 

O: 15FEB2021 09:30:49  36.1N  119.9W Md=2.5  EMSC   CENTRAL CALIFORNIA           

P: 17FEB2021 131214    36.1N  120.1W 2.5-5.1 AAAAA  Central California         

 

O: 15FEB2021 14:55:43  36.5N  118.0W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P: 17FEB2021 131208    36.1N  118.1W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 15FEB2021 20:53:53  37.5N  118.8W Md=2.5  EMSC   CENTRAL CALIFORNIA           

P: 15FEB2021 131210    37.6N  118.6W 2.5-4.7 AAAAA  California/Nevada area     

 

ALASKA

 

O: 15FEB2021 23:01:48  52.0N  170.4W ML=3.5  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 17FEB2021 131325    52.2N  171.5W 3.5-5.0 AAAAA  Andreanoff Isls, Aleutians 

 

O: 16FEB2021 03:44:25  54.2N  159.8W ML=3.6  EMSC   SOUTH OF ALASKA              

P: 14FEB2021 131321    54.8N  159.3W 3.5-5.3 AAAAA  Alaska Peninsula           

 

O: 15FEB2021 09:39:14  64.0N  148.9W ML=3.2  EMSC   CENTRAL ALASKA               

P: 14FEB2021 131351    63.2N  151.4W 3.2-5.0 AAAAA  Central Alaska             

 

O: 15FEB2021 10:13:47  68.1N  146.6W ml=3.5  EMSC   NORTHERN ALASKA              

P:  7FEB2021 131046    69.3N  144.0W 3.2-5.0 CBAAA  Northern Alaska            

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

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

 

ROCKY MOUNTAINS REGION

 

O: 15FEB2021 09:28:45  32.3N  101.8W mb=3.3  EMSC   WESTERN TEXAS                

P: 12FEB2021 131245    32.6N  101.6W 2.0-4.3 BAAAA  SW U.S.A                   

 

NEIC reported this earthquake of M 3.3 in Western Texas was felt with intensity II-III in the area(s) of Western Texas at Lenorah and Stanton.

 

O: 15FEB2021 19:17:28  44.4N  115.2W ML=2.7  EMSC   SOUTHERN IDAHO               

P: 15FEB2021 131291    44.5N  115.3W 2.0-4.1 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

 

O: 15FEB2021 05:52:55  72.3N   75.8W MB=2.9  ECAN Pond Inlet, NU   

O: 15FEB2021 04:59:53  72.2N   75.8W MB=3.0  ECAN Pond Inlet, NU   

O: 15FEB2021 04:58:41  72.2N   75.8W MB=3.3  ECAN Pond Inlet, NU   

O: 14FEB2021 13:40:46  72.3N   75.7W MB=2.4  ECAN Pond Inlet, NU                  

P: 13FEB2021 131360    73.3N   73.5W 2.5-3.9 AAAAA  Baffin/Davis Strait Canada 

P: 16FEB2021 131360    71.0N   75.0W 2.5-4.1 AAAAA  Baffin/Davis Strait Canada 

 

O: 15FEB2021 04:04:21  44.8N   72.7W MB=1.9  ECAN Bedford, QC                     

P: 12FEB2021 131296    44.0N   73.0W 2.0-3.9 BAAAA  New England                

 

O: 14FEB2021 11:48:27  46.2N   72.9W MB=2.4  ECAN Louiseville, QC                

P: 14FEB2021 131297    45.7N   75.2W 2.0-3.9 AABAA  New York State             

 

O: 14FEB2021 09:18:56  47.8N   70.0W MB=2.0  ECAN Charlevoix Seismic Zone        

P: 17FEB2021 131296    47.3N   70.5W 2.0-3.9 BAAAA  New England                

 

HAWAII

 

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

 

THEY'RE BACK!!

 

EARTHQUAKE SUMMARY FOR FEBRUARY 14, 2021

 

After a day of extreme quiet in the Loyalty Islands, seismicity returned to the

area with an M 5.8 aftershock and several associated moderate quakes in the area

of M 5.0-5.5. These are aftershock of the M 7.7 in Vanuatu of February 11 and were not reported felt in this remote area. This lull in activity had been noted

in the previous issue of this summary as:

 

"In a surprising development the M 7.1 in Japan appears to have stopped the aftershock sequence of the M 7.7 in the Loyalty Islands. There were no moderate aftershocks located in that region today. The area may have locked up with additional energy from Japan but this is not certain." (February 14, 2021)

 

An interesting M 5.3 also occurred north of the Loyalty Islands today in the area of central Vanuatu. This is in a volcanic area and may reflect volcanism beginning after the strong regional activity in the Loyalty Islands.  This event is located at 60.0 degrees (node 6) from the M 7.1 in Honshu, Japan of February 13 and was probably triggered by energy from that source.  The area often sees a series of events when a moderate quake occurs. Watch for additional and perhaps larger events in this region of Vanuatu in coming days.

 

This epicenter is near the Northeast Shepherd Islands, Kuwae and Epi Volcanoes in Vanuatu and may have been associated with regional volcanism in this area of Pele Volcano, of central Vanuatu. It is near Port Vila, a major city in Vanuatu.

 

Forecasts 131076 and 131380 had expected this activity was likely within about  100 km between February 7 and 17. The last earthquake within this area of M>=5.3 was an M 6.2 and aftershocks beginning on September 6, 2020 about 75 km north of today's epicenter. An M 5.8 hit near this epicenter on Marcy 28, 2020. 

 

NEIC reported this earthquake of M 5.3 in Vanuatu was felt with intensity IV in the area(s) of Vanuatu at Vila Shefa.

 

O: 14FEB2021 19:43:00  17.6S  168.0E Mw=5.3  EMSC   VANUATU                      

P:  7FEB2021 131076    17.0S  167.0E 4.0-5.4 CAAAA  Vanuatu Islands            

P: 17FEB2021 131380    16.0S  168.0E 4.0-5.6 BBAAA  Vanuatu Islands            

 

The aftershocks in the Loyalty Islands today followed a one-day lull in activity

in the area following the M 7.1 in Japan. Today's activity was not reported felt but included events of M 5.8, 5.3, 5.1 among others. Forecast  131386 had expected today's activity was likely within about 50 km of these events around February 14.

 

O: 14FEB2021 08:45:03  22.6S  171.2E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 13:22:42  23.1S  171.6E mb=4.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 16:06:28  23.2S  171.3E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 12:16:49  23.3S  171.5E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 13:52:28  23.3S  171.6E mb=4.8  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 15:01:42  23.3S  171.7E Mw=5.8  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 15:07:38  23.4S  171.7E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 08:09:30  22.5S  171.2E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

O: 14FEB2021 08:09:30  22.5S  171.2E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 14FEB2021 131386    22.0S  172.0E 4.0-5.3 AAAAA  Loyalty Islands             

 

The aftershock sequence off the east coast of Honshu, Japan continued today  with the largest even an M 5.2. These follow the M 7.1 which occurred in this area on February 13 and had been expected in forecast 131242 to occur within about 50 km around February 14.

 

NEIC reported this earthquake of M 4.6 in Honshu, Japan was felt with intensity II-III in the area(s) of Honshu, Japan in Miyagi. An M 5.1 was felt with intensity VI in Fukushima and II-III in Miyagi and Chiba, Japan.

 

O: 14FEB2021 21:25:30  37.5N  141.5E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 08:48:30  37.6N  141.6E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 09:26:58  37.6N  141.8E mb=4.6  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 11:41:30  37.6N  141.7E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 14:20:30  37.6N  141.7E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 07:59:23  37.7N  141.6E mb=4.5  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 10:41:30  37.7N  141.7E ML=4.2  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 07:31:50  37.5N  141.5E mb=5.2  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

The largest earthquake in the U.S. or Canada today was an M 5.2 in the western Andreanof Islands, Aleutians, Alaska. It may have been felt in Adak. The only earthquakes in the past year in the western Andreanof Islands with M>5.2 occurred on January 3, 2021 (M 6.1) and March 2, 2020 (M 5.7). The last of M 5.2 was an M 5.2 on June 19, 2020. Forecast 131323 had expected today's activity within about 50 km was likely around February 13.

 

O: 14FEB2021 19:13:18  51.4N  179.3W mb=5.2  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 13FEB2021 131323    50.9N  179.0W 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: 14FEB2021 16:16:38  40.2N   76.3E mb=4.5  EMSC   SOUTHERN XINJIANG, CHINA     

P: 13FEB2021 131287    40.0N   77.0E 4.0-5.6 AAAAA  Kirgizstan/Xinjiang        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 15FEB2021 04:57:13   1.0N   98.8E mb=5.0  EMSC   NIAS REGION, INDONESIA       

P: 14FEB2021 131124     1.0N   97.0E 4.0-5.3 AABAA  Nicobar Islands            

P: 16FEB2021 131125     0.0N   98.0E 4.0-5.4 AAAAA  So. Sumatera               

 

O: 14FEB2021 09:44:49   1.2N  120.3E mb=5.1  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 14FEB2021 131113     0.0N  120.0E 4.0-5.4 ABAAA  Celebes Sea                

 

O: 14FEB2021 10:12:35   4.1N  124.5E ML=4.5  EMSC   CELEBES SEA                  

P: 17FEB2021 131122     4.0N  125.0E 4.0-5.4 BAAAA  Mindanao, Philippines      

 

O: 14FEB2021 14:53:31   4.2S  141.9E ML=4.8  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 17FEB2021 131144     3.0S  144.0E 4.0-5.4 BBBAA  Papua New Guinea           

 

O: 14FEB2021 22:50:42   7.2S  129.4E mb=4.6  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 15FEB2021 131127     6.0S  129.0E 4.0-5.3 ABAAA  Banda Sea                  

 

CENTRAL AND SOUTH AMERICA

 

O: 14FEB2021 14:01     29.4S   71.1W mb=4.2  GUC    Coquimbo at Coquimbo and La Hi

P: 16FEB2021 131383    29.0S   70.0W 4.0-5.9 AAAAA  Coast Central Chile        

P: 16FEB2021 131383    29.0S   72.0W 4.0-5.4 AAAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity  IV in  Coquimbo at Coquimbo and La Higuera; III in La Serena, Chile.

 

 

O: 14FEB2021 19:46:58   1.3N   85.0W mb=4.5  EMSC   OFF COAST OF ECUADOR         

P: 16FEB2021 131126     2.0N   85.0W 4.0-5.7 AAAAA  So. of Panama              

 

O: 14FEB2021 14:19:30   9.1N   82.7W ML=4.3  EMSC   PANAMA-COSTA RICA BORDER REGIO

P: 17FEB2021 131158    10.0N   84.0W 3.5-5.5 BAAAA  Caribbean Sea              

 

O: 15FEB2021 00:17:27  11.4N   77.0W mb=4.9  EMSC   NORTH OF PANAMA              

 

NEIC reported this earthquake of M 4.9 in  Panama was felt with intensity II-III in the area(s) of Panama  at Paraiso (V) and San Miguelito (IV) and in Cartagena, Colombia.

 

O: 14FEB2021 09:20:56  13.8N   91.3W mb=5.1  EMSC   OFFSHORE GUATEMALA           

P: 13FEB2021 131163    13.0N   90.0W 3.5-5.2 AAAAA  Guatemala                  

P: 14FEB2021 131163    15.0N   91.0W 3.5-5.3 ABAAA  Guatemala                  

 

NEIC reported this earthquake of M 5.1 in Guatemala was felt with intensity II-III in the area(s) of Guatemala at Chicacao and San Pedro la Laguna (IV) and in San Vicente, Teopan, Olintepeque and Guatemala City.

 

O: 14FEB2021 17:51:44  17.9N  101.6W ML=4.6  EMSC   GUERRERO, MEXICO             

P: 13FEB2021 131173    17.0N  102.0W 3.5-5.0 AAAAA  Michoacan, Mexico          

 

O: 15FEB2021 04:04:19  18.7N  105.6W ML=4.2  EMSC   OFFSHORE JALISCO, MEXICO     

P: 17FEB2021 131162    18.0N  106.0W 3.5-5.5 AAAAA  Coast of Jalisco, Mexico   

 

O: 14FEB2021 23:49:56  18.9N   65.3W ML=3.4  EMSC   PUERTO RICO REGION           

P: 14FEB2021 131167    19.0N   64.0W 3.0-5.1 AAAAA  Leeward Islands            

P: 17FEB2021 131167    18.0N   65.0W 3.0-5.1 BAAAA  Leeward Islands            

 

O: 14FEB2021 21:09:53  21.4S   69.9W mb=4.0  EMSC   TARAPACA, CHILE              

P: 12FEB2021 131384    21.0S   69.0W 4.0-5.6 AAAAA  Coast No. Chile            

 

O: 14FEB2021 14:01:54  29.4S   71.3W mb=4.4  EMSC   COQUIMBO, CHILE              

P: 12FEB2021 131403    30.0S   71.0W 4.0-5.7 AAAAA  Coast Central Chile        

P: 16FEB2021 131383    29.0S   70.0W 4.0-5.9 AAAAA  Coast Central Chile        

 

O: 15FEB2021 03:52:49  34.7S   74.0W ML=4.0  EMSC   OFF COAST OF O'HIGGINS, CHILE

P: 15FEB2021 131399    36.0S   73.0W 4.0-5.6 ABAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O: 15FEB2021 03:04:53  28.2N   16.3W ML=1.7  EMSC   CANARY ISLANDS, SPAIN REGION 

 

O: 14FEB2021 09:18:06  42.3N    9.6E ML=3.3  EMSC   CORSICA, FRANCE              

P: 16FEB2021 131285    44.0N    7.0E 3.0-5.1 ABBAA  Italy                      

 

O: 14FEB2021 09:04:16  57.1N    1.7E ML=2.6  EMSC   NORTH SEA                    

P: 14FEB2021 131343    54.0N    2.0W 3.0-4.7 ACBAA  United Kingdom             

 

O: 14FEB2021 21:06:16  38.2N   30.1E ML=4.0  EMSC   WESTERN TURKEY

O: 14FEB2021 21:08:15  38.2N   30.1E mb=4.4  EMSC   WESTERN TURKEY               

P: 11FEB2021 131269    39.0N   31.0E 3.5-5.2 BAAAA  Turkey                     

 

SOUTHWEST PACIFIC

 

O: 14FEB2021 19:43:00  17.6S  168.0E Mw=5.3  EMSC   VANUATU                      

P:  7FEB2021 131076    17.0S  167.0E 4.0-5.4 CAAAA  Vanuatu Islands            

P: 17FEB2021 131380    16.0S  168.0E 4.0-5.6 BBAAA  Vanuatu Islands            

 

This epicenter is near the Northeast Shepherd Islands, Kuwae and Epi Volcanoes in Vanuatu and may have been associated

with regional volcanism in this area of Pele Volcano, of central Vanuatu.

It is near Port Vila, a major city in Vanuatu.

 

O: 14FEB2021 22:06:40  17.9S  178.6W mb=4.4  EMSC   FIJI REGION                  

P: 17FEB2021 131378    17.0S  179.0W 4.0-5.9 BAAAA  Tonga Islands              

 

O: 14FEB2021 08:09:30  22.5S  171.2E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 14FEB2021 131386    22.0S  172.0E 4.0-5.3 AAAAA  Loyalty Islands            

 

O: 14FEB2021 23:14:38  13.2N   57.6E mb=4.4  EMSC   OWEN FRACTURE ZONE REGION    

P: 12FEB2021 131157    15.0N   57.0E 3.5-5.0 ABAAA  Arabian Sea                

 

O: 14FEB2021 08:45:03  22.6S  171.2E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 13:22:42  23.1S  171.6E mb=4.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 16:06:28  23.2S  171.3E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 12:16:49  23.3S  171.5E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 13:52:28  23.3S  171.6E mb=4.8  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 15:01:42  23.3S  171.7E Mw=5.8  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 15:07:38  23.4S  171.7E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 14FEB2021 08:09:30  22.5S  171.2E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 14FEB2021 131386    22.0S  172.0E 4.0-5.3 AAAAA  Loyalty Islands            

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 14FEB2021 16:19:26  33.0S  178.9E ML=3.6  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 17FEB2021 131417    32.0S  178.0E 4.0-5.3 BAAAA  So. Kermadec Islands       

 

O: 14FEB2021 16:09:32  34.1S  179.0E ML=3.8  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 17FEB2021 131407    35.0S  179.0E 3.0-4.6 BAAAA  North Island, N.Z.         

 

O: 14FEB2021 13:33:22  42.0S  174.0E ML=3.6  EMSC   COOK STRAIT, NEW ZEALAND     

P: 15FEB2021 131426    41.0S  174.0E 3.0-5.0 AAAAA  So. Island, N.Z.           

 

O: 14FEB2021 22:59:01  44.5S  167.8E ML=3.7  EMSC   SOUTH ISLAND OF NEW ZEALAND  

P: 12FEB2021 131428    44.0S  168.0E 3.0-5.2 AAAAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

O: 14FEB2021 14:51:57  22.6N  145.8E mb=5.1  EMSC   VOLCANO ISLANDS, JAPAN REGION

P: 13FEB2021 131204    23.0N  144.0E 4.0-5.4 AABAA  Volcano Islands            

 

O: 14FEB2021 21:25:30  37.5N  141.5E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 08:48:30  37.6N  141.6E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 09:26:58  37.6N  141.8E mb=4.6  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 11:41:30  37.6N  141.7E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 14:20:30  37.6N  141.7E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 07:59:23  37.7N  141.6E mb=4.5  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 10:41:30  37.7N  141.7E ML=4.2  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 07:31:50  37.5N  141.5E mb=5.2  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

O: 15FEB2021 04:28:30  34.2N  135.2E ML=4.1  EMSC   NEAR S. COAST OF WESTERN HONSH

P: 15FEB2021 131221    34.0N  136.0E 3.5-4.9 AAAAA  Central/So. Honshu Japan   

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 15FEB2021 03:07:30  33.2N  115.6W ML=2.5  EMSC   SOUTHERN CALIFORNIA          

P: 17FEB2021 131250    32.9N  115.6W 2.5-4.5 AAAAA  So. California             

 

O: 14FEB2021 21:46:20  34.0N  118.8W Ml=2.2  EMSC   SANTA MONICA BAY, CALIFORNIA 

P: 12FEB2021 131252    33.6N  118.5W 2.5-4.6 AAAAA  So. California             

P: 12FEB2021 131257    34.7N  119.0W 2.5-4.3 AAAAA  So. California             

 

O: 14FEB2021 10:05:54  34.2N  116.7W ML=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 13FEB2021 131256    34.3N  116.5W 2.5-4.3 AAAAA  So. California             

 

O: 15FEB2021 00:50:43  34.2N  117.5W Ml=2.1  EMSC   GREATER LOS ANGELES AREA, CALI

P: 13FEB2021 131255    34.1N  117.4W 2.5-4.4 AAAAA  So. California             

 

O: 14FEB2021 23:42:33  36.0N  117.3W ML=3.5  EMSC   CENTRAL CALIFORNIA           

P: 17FEB2021 131208    36.1N  118.1W 2.5-4.3 BAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.6 in Ridgecrest, California was felt with intensity II-III in the area(s) of Ridgecrest, California in Trona and Death Valley.

 

O: 15FEB2021 06:14:16  36.2N  118.2W Ml=2.0  EMSC   CENTRAL CALIFORNIA           

P: 17FEB2021 131208    36.1N  118.1W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 14FEB2021 11:57:50  37.3N  118.3W ML=3.6  EMSC   CENTRAL CALIFORNIA           

P: 15FEB2021 131210    37.6N  118.6W 2.5-4.7 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.7 in California-Nevada border was felt with intensity II-III in the area(s) of the California-Nevada border in Bishop, Big Pine, Silverpeak, Mammoth Lakes, Shaver Lake, June Lake, Visalia.

 

O: 14FEB2021 14:10:48  38.2N  117.9W ml=2.0  EMSC   NEVADA                       

P:  7FEB2021 130907    37.9N  118.2W 2.5-4.5 CAAAA  California/Nevada area     

 

O: 15FEB2021 00:03:18  38.2N  122.2W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 13FEB2021 131216    38.0N  122.3W 2.5-4.7 AAAAA  Central California         

 

O: 14FEB2021 18:08:59  38.6N  118.5W ML=2.8  EMSC   NEVADA                       

P: 14FEB2021 131209    38.0N  118.8W 2.5-4.8 AAAAA  California/Nevada area     

 

ALASKA

 

O: 14FEB2021 19:13:18  51.4N  179.3W mb=5.2  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 13FEB2021 131323    50.9N  179.0W 3.5-5.0 AAAAA  Andreanoff Isls, Aleutians 

 

O: 15FEB2021 06:37:28  60.1N  151.1W mb=3.9  EMSC   KENAI PENINSULA, ALASKA      

P: 15FEB2021 131348    60.7N  151.8W 3.2-5.1 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.6 in Southern Alaska was felt with intensity II-III in the area(s) of Southern Alaska in Kasilof, Soldotna, Sterling, Homer and Cooper Landing.

 

O: 14FEB2021 19:56:11  64.0N  148.9W ML=3.2  EMSC   CENTRAL ALASKA

O: 14FEB2021 19:47:05  64.0N  149.0W mb=4.0  EMSC   CENTRAL ALASKA               

P: 14FEB2021 131351    63.2N  151.4W 3.2-5.0 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.7-4.0 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska at Healy, Cantwell, Fairbanks.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 14FEB2021 08:20:07  46.6N  121.8W Md=2.2  EMSC   WASHINGTON                   

P: 12FEB2021 131316    46.9N  122.0W 2.0-4.2 AAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 14FEB2021 08:51:19  44.3N  115.0W ML=2.8  EMSC   SOUTHERN IDAHO               

P: 15FEB2021 131291    44.5N  115.3W 2.0-4.1 AAAAA  Montana/Idaho              

 

O: 14FEB2021 12:36:36  47.4N  113.1W Ml=3.1  EMSC   WESTERN MONTANA              

P: 11FEB2021 131293    48.0N  115.0W 2.0-4.3 BABAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 14FEB2021 08:31:03  34.4N   97.4W ML=2.2  EMSC   OKLAHOMA                     

P: 15FEB2021 131264    35.0N   97.0W 2.0-4.0 AAAAA  Southern Plains            

 

HAWAII

 

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

 

MAJOR EARTHQUAKE SHAKES EASTERN HONSHU, JAPAN

 

EARTHQUAKE SUMMARY FOR FEBRUARY 13, 2021

 

JMA reported this earthquake of M 7.1 was felt with Japanese Intensity VI+ in Miyagi and Fukushima; V+ in Tochigi, V- in Iwate, Yamagata, Ibaraki and Saitama; and IV in Aomori, Akita, Gumma, Chiba, Tokyo, Niigata, Yamanashi and Shizuoka and III in Ishikari, Oshima, Sorachi, Iburi, Hidaka, Kushiro, Akita, Nagano.

NEIC reported intensity IX with damage in Soma, Fukushima, Watan, Miyagi and Shiroshi, Miyagi with VIII in Shibata, Miyagi. Intensity VI was reported from Miyagi at Ishinomaki, Kakuda, Natori, Tagajo, Sendai with VI in Iwaki, Fukushima among others. The government reported that more than 100 people were injured in today's earthquake but no one was killed. Rockfalls were common and covered many roads including a main artery through Fukushima. The power plant there has been out of operation since the quake of March 11, 2011. Most train services were suspended and some damage occurred to rail structures. Many areas of Honshu lost power during the quake. This included near a million customers. A tsunami warning was issued by JMA but only small waves were seen. The last earthquake within about 200 km of today's epicenter with M>=7.1 was an M 7.3 on December 7, 2012. The only other such event in the region since the mainshock of M 9.1 on March 11, 2011 was an M 7.0-7.1 on April 7, 2011. The event on March 11, 2011 was preceded by an M 7.5 foreshock on March 9, 2011. This was closely associated with a major solar flare and is not likely to be repeated under the current geophysical conditions.

 

The mainshock in Honshu, Japan was followed about an hour later by an M 6.0 in New Guinea. This epicenter is at 45.0 degrees from Japan (node 8) and was probably triggered by energy from the Japanese source. In a surprising development the M 7.1 in Japan appears to have stopped the aftershock sequence of the M 7.7 in the Loyalty Islands. There were no moderate aftershocks located in that region today. The  area may have locked up with additional energy from Japan but this is not certain.

 

Far-field triggering is possible from the M 7.1 in Japan today. Areas at 144 degrees include the South Shetland Islands, northern Chile and southern Peru; near 103 degrees in central and western Mexico, the Madeira Islands, southern Spain, Madagascar, Mayotte, at 120 degrees (node 3) at Panama and Costa Rica and Puerto Rico; at 90 degrees (node 4) at Oklahoma and Texas, South Island, New Zealand; at 72 degrees (node 5) in Central and northern California, Iceland, Croatia, eastern Europe and Turkey, Fiji, Tonga, Loyalty Islands; in  western Indonesia at 60 degrees (node 6); in Tajikistan, Indonesia, Philippines  at node 7 (51 degrees) and in New Britain, Xizang, Alaska Peninsula at node 8 (45 degrees).

 

Today's event followed closely after a strong GRB earlier in the day which occurred near local solar noon. The preliminary parameters of that GRB (see below) are:

 

"The last major Gamma Ray Burst (GRB) according to the online NASA Swift GRB Catalog was observed on February 12, 2021 at 04:25 UT with BAT Fluence  8.0e10-7 erg/cm2 (MAGNITUDE: >19.0), Associated earthquake: Honshu, Japan, 7.1, Cook Strait, NZ M 4.9; Central Turkey M 4.7)" (February 13, 2021)

 

A more immediate trigger for today's earthquake, however is a geomagnetic storm which peaked with KP 6 at high latitudes at 14:00 UT shortly before the  occurrence of the M 7.1 in Japan. This is the fourth largest such storm of since November 22, 2020 with similar occurrences at middle latitudes on February 2-3, February 7 and January 25, 2021. Each of these was accompanied by moderate quakes in Japan or Taiwan. Of particular note was an M 4.2 foreshock on February 3 which occurred in the Fukushima area at the peak of that geomagnetic storm. But note that the last significantly larger geomagnetic storm and the last moderately strong precursory activity off the coast of eastern Honshu, Japan both occurred on November 22, 2020.  This had been noted at the time in this summary:

 

"The strongest earthquake in the world today was an M 5.5 north of Tokyo east of Honshu, Japan. NEIC reported maximum intensity V in Ibaraki, Tochigi and Fukushima; IV in Chiba, Japan. This is the strongest earthquake within about 150 km of this epicenter since an M 5.9 in June 24, 2020. ...  Today's event ... occurred at the height of a strong geomagnetic storm which reached AP 45 at high latitudes early on November 23, the strongest in nearly two months." (November 22-23, 2020)

 

Parameters of today's storm are:

 

The geomagnetic field saw active conditions today. The AP level was 13.  High latitude geomagnetic field also saw minor storm conditions with AP 18. Moderate geomagnetic storms such as this can help promote seismicity at high latitudes and near the geomagnetic equator such as the M 7.1 in Japan and the following M 6.0 in New Guinea today.

 

Forecasts 131242 and 131261 had expected enhanced seismicity within about 50 km  of these epicenter near the coast of Honshu was likely around February 14.

 

O: 13FEB2021 14:23:30  37.6N  141.7E ML=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 14:36:42  37.6N  141.8E mb=4.9  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 14:58:30  37.6N  141.8E ML=4.4  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 15:36:30  37.6N  141.5E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 16:53:30  37.6N  141.6E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 21:08:30  37.6N  141.6E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 14:07:52  37.7N  141.6E Mw=7.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 14:55:30  37.7N  141.7E ML=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 15:05:30  37.7N  141.7E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 15:15:30  37.7N  141.6E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 16:32:59  37.7N  141.8E mb=4.4  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 17:01:30  37.7N  141.6E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 17:36:30  37.7N  141.8E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 05:53:54  37.7N  141.7E mb=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 14:51:43  37.8N  141.6E mb=5.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 16:14:41  37.8N  141.7E mb=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 05:11:21  37.5N  142.0E mb=4.6  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

P: 14FEB2021 131261    38.0N  143.0E 4.0-5.5 AAAAA  So. of Honshu              

 

 

A regional aftershock of M 5.2 off northern Honshu, Japan was felt with intensity II-IV in Kanagawa, Saitama, Aomori and Iwate, Japan. If a strong shock follows today's M 7.1 this is a likely location for it to initiate. This is the largest earthquake within about 100 km of this epicenter since an M 6.1 on September 12, 2020. Today's event is probably a regional aftershock of the M 7.7 about 200 km to the southwest.   Forecast 131282 had expected this event within this area was likely around February 12.

 

O: 13FEB2021 18:25:29  39.2N  142.4E mb=5.2  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 12FEB2021 131282    40.0N  142.0E 3.5-5.7 AAAAA  Hokkaido, Japan            

 

The mainshock in Honshu, Japan is at the seventh node (51.4 degrees) from the

M 6.3 in Tajikistan yesterday and was probably promoted by energy from that source.

 

 

Since it has only been 10 years since the activity of March, 2011 in the same rupture zone, hardly enough time for the accumulation of great regional stress after those events, a second major earthquake seems unlikely to follow in the next several days. Still, the parallels with today's event and the M 7.1 foreshock on March 9, 2011 could suggest a repeat of that process at lower magnitudes. So it may be instructive to revisit what this summary reported on March 9, 2011 the day of the M 7.1 foreshock and prior to the mainshock in the Fukushima area of Japan. This is from the summary of March 9, 2011:

 

"The mainshock of this earthquake off Honshu is at 51.4 degrees from the last strong earthquake in the world - the M 6.6 in the Solomon Islands on March 6.

This is exactly at the seventh node (360/7=51.4 degrees) from that event. Seismic promotion from this earthquake of the Honshu event is very likely.

 

As noted at the time of the last moderate earthquakes in this region of Japan, seismic activity in this region is often triggered by unusually strong solar flares. On February 15 and X2.2 flare was followed by events of M 5.4 and 5.7 at the same epicenter as today's earthquake, events which were foreshocks to those of today. At the time we noted:

 

"A pair of moderate earthquakes also occurred north of Indonesia in the area off the east coast of Honshu, Japan today with M 5.4, 5.7. These earthquake were well offshore and were not reported felt on the Japanese mainland. This epicenter was also subsolar during the great X2.2 flare today. Japan often shows strong triggering with major flares on the sun. The timing places the earthquake occurring four minutes after flare 7180, a C1.7 flare." (February 15, 2011)

 

As with the foreshocks of February 15, the mainshock today occurred about 15 minutes after local solar noon (sub-solar). At exactly local solar noon the largest solar flare of the day, a C6.4 class solar flare occurred which may have been the immediate trigger for this earthquake. The largest flare since the X2.2 on February 15 occurred several hours earlier on March 8 as an M3.7 flare (#1830). The sun has been at its most active state since February 15 with at least six M-class solar flares in the past two days. This data is located in our GEOMAGNETIC section below.

 

The earthquake also follows the strongest volcanic eruption in Japan in the past seven years. This was considered a possible precursor to such an event in eastern Honshu in our report of February 6, 2011 as stated:

 

"The eruption of Kirishima Volcano in Japan continued today. Nearly 100 million tons of ash have fallen from the eruption which began on January 26 and nine large explosions have occurred at Shinmoedake. The lava dome which has formed in this eruption in southwestern Japan is now 110 meters high and 600 meters in diameter. This is the largest eruption of a volcano in Japan since December 2004 when Miyakejima volcano erupted to the south of Tokyo. This eruption was largely considered a precursor to the upcoming Tokyo great earthquake." (February 6, 2011)

 

The first and strongest aftershock occurred 12 minutes after the mainshock. This is very common in large events and is statistically significant. It is also the time of the first arrival of a seismic wave back to the epicenter - the PcS phase which is a reflection off the core-mantle boundary back to the epicentral region. The highly unstable condition of the seismic regime  after the mainshock makes the region particularly vulnerable at this time to dynamic triggering from such returning seismic waves. The next major phase to return to the epicentral area is the SS-phase which arrives 47 minutes after the mainshock. An M 5.2 aftershock coincides with this return phase at 04:32 UT another possible of a triggered aftershock.

 

Followers of internet news, newspapers and TV often see the statement "large earthquakes are common in Japan. 20% of the world's earthquakes of magnitude 6 or greater occur in the region of Japan". This is a statement which comes from some central clearing house and is very misleading. Most Americans think of  Japan as the Island of Honshu and perhaps Hokkaido. But Japan actually extends from about as far north as the northern Kuril Islands at the same latitude as much of southern Alaska to the southern Ryukyu Islands, as far south as much of Mexico and Cuba and from east to west from the Asian coast to the Volcano Islands. This is a region as large as the United States east of the Rocky Mountains. But the statistics over the past 20 years do not  bear this out either. Since 1990 NEIC has reported 3293 earthquakes of M>=6 in the world. Of these 318 have been located in this region of greater Japan, only 10% of the global earthquakes of M>=6, half the number claimed. In the past 10 years this is even a smaller percentage, at 155 out of 1740 such  events - about 9% and in the past five years this has fallen to about 8% of the global seismicity at this magnitude level. This percentage is much lower if only the populated Islands of Honshu, Hokkaido and Kyushu area are included, this falls to 121 of 3293 events of M>=6 since 1990 or about 3-4% of the earthquakes in the world, a far cry from the purported 20%.

 

The earthquake today is the strongest in the region of greater Japan in the past three years. The only events of M>=7.4 in the area in the past five years occurred in the Kuril Islands on January 13, 2007 and January 15, 2009 with M 8.1 and 7.4 respectively. The only earthquake of larger magnitude within 300 km of today's earthquake in the past 20 years was an M 7.9 on December 28, 1994. The only such earthquake near the Island of Honshu of M>=7.4  in the past 20 years was an M 7.4 in southern Honshu on September 5, 2004. This should put the earthquake today in perspective." (March 9, 2011)

 

The strong M 6.0 quake in New Guinea today at 45.0 degrees (node 8) from the M 7.1 in Japan was reported by NEIC to have been felt with intensity II in Port Moresby, Papua New Guinea. This is the strongest earthquake within about 200 km of this epicenter since an M 6.0 on October 1, 2020 and an M 6.0 on March 19, 2018. The last in this region of M>6.0 was an M 6.9 on October 17, 2016.  Forecast 131137 had expected this event within this area was likely around February 11.

 

O: 13FEB2021 15:33:51   7.2S  149.5E Mw=6.0  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 11FEB2021 131137     6.0S  150.0E 4.0-5.4 ABAAA  New Ireland                

 

The strongest earthquake in the U.S. or Canada today was an M 5.2-5.3 in the Kodiak Alaska region where it was reported by NEIC to have been felt with intensity II-III at Kodiak and in Homer and Anchorage. This is the strongest earthquake within about 150 km of this epicenter since an M 5.3 on May 11, 2018. An M 6.8 on May 29, 2015 was the last event of larger magnitude in this region of the Alaska Peninsula. Like the M 6.0 in New Guinea, this is located at the eighth node (45 degrees) from the M 7.1 in Japan today. This epicenter is at 142 degrees from the South Shetland Islands M 7.1 of January 23 and may have been enhanced by energy from that source.

 

O: 13FEB2021 13:20:02  57.1N  155.1W ml=3.4  EMSC   ALASKA PENINSULA             

O: 13FEB2021 13:08:54  57.2N  155.2W Mw=5.3  EMSC   ALASKA PENINSULA

O: 13FEB2021 13:08:55  57.1N  155.0W Mw=5.3  ANSS   ALASKA PENINSULA

P:  5FEB2021 131033    56.0N  156.0W 3.0-4.6 CBAAA  Alaska Peninsula           

P: 17FEB2021 131321    54.7N  156.9W 3.5-4.8 BCAAA  Alaska Peninsula           

 

A moderate M 4.4 earthquake occurred in the region of Alberta Canada today. NEIC reported it was felt with maximum intensity IV in Alberta at Banff, Canmore, Chateau Lake Louise and I-II in Cochrane, Calgary, Airdrie, Okotoks, Leduc, Devon and in British Colombia  at Golden. Earthquakes Canada also reported this event was felt in the Banff area of Alberta. This is the strongest earthquake in the Banff area of Alberta within about 200 km in the past 30 years. The largest previous earthquakes in this area in this time period were of M 4.3 on March 10, 2019 and August 9, 2014 and an M 4.2 on May 19, 1996.  Forecast 131322 had expected today's event in Alberta was likely within about 100 km of this epicenter around February 17. This epicenter is at 103 degrees from the M 7.0 in Mindanao of January 21 and may have been promoted by energy from that source.

 

O: 14FEB2021 01:33:11  51.2N  115.6W MB=3.9  ECAN Banff, AB. Felt   

O: 14FEB2021 01:33:10  51.2N  115.6W mb=4.4  EMSC   ALBERTA, CANADA              

P: 17FEB2021 131322    52.0N  115.0W 2.0-4.2 BAAAA  Alberta                    

 

The strongest earthquake in the western hemisphere today was an M 5.2 in Northern Chile. NEIC reported it was felt with intensity IV in Iquique, Tarapaca, Chile. This earthquake is at 147 degrees from the event in Honshu of M 7.7 and may have been promoted by concentrated energy from that source. Forecasts 131384 and 131391 had expected this event within about 75 km was likely between February 12 and 16.

 

GUC reported this earthquake was felt with intensity  IV in  Tarapaca at Alto Hospicio, Iquique, Pozo Almonte; III in Huara, Pica, Pisagua, II in Camina and Ujina and III in Antofagasta at Quillagua, Chile. This epicenter is at 105 degrees from the Loyalty Islands and  at 145 degrees  from the M 7.1 in Honshu, Japan and may have been promoted by energy from those regions.

 

O: 13FEB2021 18:49:42  20.5S   70.6W Mw=5.2  EMSC   OFFSHORE TARAPACA, CHILE

O: 13FEB2021 18:49     20.5S   70.6W mb=5.2  GUC    Tarapaca at Alto Hospicio, Iqu

P: 12FEB2021 131384    21.0S   69.0W 4.0-5.6 AABAA  Coast No. Chile            

P: 16FEB2021 131391    20.0S   71.0W 4.0-5.4 BAAAA  So. Peru/Bolivia           

 

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: 14FEB2021 04:25:04  23.1N  121.5E ML=4.4  EMSC   TAIWAN                       

O: 14FEB2021 04:25:04  23.1N  121.5E ML=4.4  TAI    Hualien, Taiwan               

P: 14FEB2021 131202    24.0N  121.0E 4.0-5.6 AAAAA  Taiwan                     

P: 15FEB2021 131202    23.0N  122.0E 4.0-5.6 AAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity IV in Taitung, II in Hualien and I in Kaohsiung, Nantou and Changhua Counties, Taiwan.

 

O: 13FEB2021 22:00:22  38.1N   72.6E mb=4.2  EMSC   TAJIKISTAN                   

P: 14FEB2021 131226    38.0N   74.0E 3.8-5.4 AAAAA  Hindu Kush/Pakistan        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 13FEB2021 18:18:57   2.1N  122.6E ML=4.1  EMSC   CELEBES SEA                  

P: 14FEB2021 131113     0.0N  120.0E 4.0-5.4 ACCAA  Celebes Sea                

 

O: 13FEB2021 09:48:13   4.2S  137.0E ML=4.1  EMSC   NEAR S COAST OF PAPUA, INDONES

P: 15FEB2021 131154     5.0S  139.0E 4.0-5.3 AABAA  West Irian, PNG            

 

O: 14FEB2021 00:37:52   4.8N  127.0E mb=4.7  EMSC   KEPULAUAN TALAUD, INDONESIA

O: 13FEB2021 12:25:22   4.7N  126.6E mb=4.6  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 14FEB2021 131120     5.0N  127.0E 4.0-5.4 AAAAA  Halmahera                  

 

O: 13FEB2021 15:33:51   7.2S  149.5E Mw=6.0  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 11FEB2021 131137     6.0S  150.0E 4.0-5.4 ABAAA  New Ireland                

 

O: 14FEB2021 00:39:55   8.6S  116.9E mb=4.4  EMSC   LOMBOK REGION, INDONESIA     

P: 17FEB2021 131152     8.0S  117.0E 4.0-5.3 BAAAA  Sumbawa Island area        

 

NEIC reported this earthquake of M 4.4 in Lombok, Indonesia was felt with intensity II-III in the area(s) of Lombok, Indonesia at Denpasar, Bali.

 

O: 13FEB2021 14:38:02  10.4S  123.5E ML=4.4  EMSC   TIMOR REGION, INDONESIA      

O: 13FEB2021 15:19:14  10.5S  123.5E mb=4.7  EMSC   TIMOR REGION, INDONESIA

P: 15FEB2021 131367    10.0S  124.0E 4.0-5.6 AAAAA  Flores Island area         

 

 

CENTRAL AND SOUTH AMERICA

 

O: 13FEB2021 21:53:30   9.9N   84.7W ML=4.0  EMSC   COSTA RICA                   

P:  9FEB2021 130857    10.0N   84.0W 3.5-5.5 BAAAA  Caribbean Sea              

P: 12FEB2021 131118     9.0N   86.0W 3.5-5.1 AAAAA  Costa Rica                 

 

O: 13FEB2021 22:46:03  13.6N   84.7W ML=4.2  EMSC   NICARAGUA                    

P: 13FEB2021 131176    12.0N   86.0W 3.5-5.4 ABAAA  Nicaragua                   

 

O: 14FEB2021 01:11:10  15.6N   96.0W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO

O: 13FEB2021 09:57:02  15.5N   95.9W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 12FEB2021 131180    16.0N   96.0W 3.5-5.0 AAAAA  Oaxaca, Mexico             

P: 13FEB2021 131160    15.0N   95.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

 

O: 13FEB2021 09:15:00  16.7N   93.9W ML=4.1  EMSC   CHIAPAS, MEXICO              

P: 11FEB2021 131159    15.0N   93.0W 3.5-5.1 ABAAA  Chiapas, Mexico            

 

O: 13FEB2021 17:11:15  18.6N   70.5W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 14FEB2021 131182    20.0N   71.0W 3.4-5.2 ABAAA  Puerto Rico                

 

O: 13FEB2021 21:07:07  19.0N  108.0W ML=3.9  EMSC   OFF COAST OF JALISCO, MEXICO 

P: 17FEB2021 131189    20.0N  109.0W 3.5-5.0 BAAAA  Gulf of California         

 

O: 13FEB2021 15:56:58  19.1N   69.9W ML=3.1  EMSC   DOMINICAN REPUBLIC           

P: 14FEB2021 131182    20.0N   71.0W 3.4-5.2 AAAAA  Puerto Rico                

P: 17FEB2021 131182    19.0N   69.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 13FEB2021 22:04:30  19.4N   66.3W ML=3.0  EMSC   PUERTO RICO REGION           

P: 16FEB2021 131186    20.0N   66.0W 3.0-4.4 BAAAA  Bahamas/No. Caribbean      

 

O: 13FEB2021 16:24:46  19.6N   69.4W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P: 17FEB2021 131182    19.0N   69.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 13FEB2021 21:50:18  20.1N   71.4W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P: 14FEB2021 131182    20.0N   71.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 14FEB2021 05:24:20  22.0S   66.0W mb=4.4  EMSC   JUJUY, ARGENTINA             

P: 12FEB2021 131382    22.0S   68.0W 4.0-5.6 AABAA  Argentina                  

 

O: 13FEB2021 21:12:20  24.0S   66.8W mb=4.4  EMSC   JUJUY, ARGENTINA             

P: 15FEB2021 131382    24.0S   66.0W 4.0-5.9 AAAAA  Argentina                  

 

O: 13FEB2021 18:49:42  20.5S   70.6W Mw=5.2  EMSC   OFFSHORE TARAPACA, CHILE

O: 13FEB2021 18:49     20.5S   70.6W mb=5.2  GUC    Tarapaca at Alto Hospicio, Iqu

P: 12FEB2021 131384    21.0S   69.0W 4.0-5.6 AABAA  Coast No. Chile            

P: 16FEB2021 131391    20.0S   71.0W 4.0-5.4 BAAAA  So. Peru/Bolivia           

 

 

AFRICA AND EUROPE

 

O: 14FEB2021 04:47:52  38.8N   29.4W ML=4.0  EMSC   AZORES ISLANDS, PORTUGAL     

P: 14FEB2021 131238    38.0N   32.0W 4.0-5.5 AABAA  No. Mid-Atlantic Ridge     

 

O: 13FEB2021 11:29:22  40.0N   44.5E mb=4.9  EMSC   ARMENIA                      

P: 17FEB2021 131278    40.0N   44.0E 3.5-5.1 BAAAA  Caucasus/Caspian Sea       

 

NEIC reported this earthquake of M 4.9 in Armenia was felt with intensity VI in the area(s) of Armenia at Jrvesh; V in Yerevan, Arinj, and Gadebey, Azerbaijan; IV in Armenia at Nor Kesaria, Kanakeravan, Naxowan, Azerbaijan and III in Ararat, Charentsavan and Hrazoan Kotayk, Armenia. 

 

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

 

SOUTHWEST PACIFIC

 

O: 13FEB2021 13:06:47  11.5S  166.5E mb=5.0  EMSC   SANTA CRUZ ISLANDS           

P:  9FEB2021 131075    12.0S  167.0E 4.0-5.3 BAAAA  Vanuatu Islands            

P: 12FEB2021 131379    11.0S  164.0E 4.0-5.4 AACAA  Vanuatu Islands            

 

O: 14FEB2021 03:50:37  23.4S  179.6W mb=4.4  EMSC   SOUTH OF FIJI ISLANDS        

O: 13FEB2021 16:26:42  24.4S  179.7E mb=4.5  EMSC   SOUTH OF FIJI ISLANDS        

P: 15FEB2021 131393    25.0S  179.0E 4.0-5.4 AAAAA  Tonga/Fiji                 

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 14FEB2021 03:42:08  29.8S  179.0E mb=4.1  EMSC   KERMADEC ISLANDS REGION      

P: 17FEB2021 131417    32.0S  178.0E 4.0-5.3 BCAAA  So. Kermadec Islands       

 

O: 14FEB2021 03:52:16  33.8S  178.5E ML=3.7  EMSC   SOUTH OF KERMADEC ISLANDS    

O: 13FEB2021 11:30:40  34.5S  179.6E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 17FEB2021 131407    35.0S  179.0E 3.0-4.6 BAAAA  North Island, N.Z.         

 

O: 14FEB2021 02:22:34  32.8S  177.6E ML=4.3  EMSC   NORTH OF NEW ZEALAND         

P: 17FEB2021 131417    32.0S  178.0E 4.0-5.3 BAAAA  So. Kermadec Islands       

 

O: 13FEB2021 12:37:06  36.1S  179.6E ML=3.8  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 11FEB2021 131408    37.0S  178.0E 3.0-4.3 AABAA  North Island, N.Z.         

 

O: 13FEB2021 14:19:31  38.5S  175.9E ML=3.6  EMSC   NORTH ISLAND OF NEW ZEALAND  

P: 13FEB2021 131410    39.0S  175.0E 3.0-4.7 AAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 13FEB2021 14:23:30  37.6N  141.7E ML=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 14:36:42  37.6N  141.8E mb=4.9  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 14:58:30  37.6N  141.8E ML=4.4  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 15:36:30  37.6N  141.5E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 16:53:30  37.6N  141.6E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 21:08:30  37.6N  141.6E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 14:07:52  37.7N  141.6E Mw=7.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 14:55:30  37.7N  141.7E ML=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 15:05:30  37.7N  141.7E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 15:15:30  37.7N  141.6E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 16:32:59  37.7N  141.8E mb=4.4  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 17:01:30  37.7N  141.6E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 17:36:30  37.7N  141.8E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 05:53:54  37.7N  141.7E mb=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 14:51:43  37.8N  141.6E mb=5.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 13FEB2021 16:14:41  37.8N  141.7E mb=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 14FEB2021 05:11:21  37.5N  142.0E mb=4.6  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

P: 14FEB2021 131261    38.0N  143.0E 4.0-5.5 AAAAA  So. of Honshu              

 

O: 13FEB2021 11:22:27  33.4N  141.1E mb=4.4  EMSC   OFF EAST COAST OF HONSHU, JAPA

P: 11FEB2021 131240    33.0N  142.0E 4.0-5.6 AAAAA  Off East Coast Honshu      

 

NEIC reported this earthquake of M 4.4 south of Honshu, Japan  was felt with intensity II-III in the area(s) south of Honshu, Japan at Urayasu, Chiba.

 

O: 13FEB2021 10:52:30  35.7N  138.5E ML=3.6  EMSC   EASTERN HONSHU, JAPAN        

P: 11FEB2021 131236    35.0N  139.0E 3.5-4.9 AAAAA  No. Honshu, Japan          

 

O: 13FEB2021 18:25:29  39.2N  142.4E mb=5.2  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 12FEB2021 131282    40.0N  142.0E 3.5-5.7 AAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 13FEB2021 08:02:43  38.8N  122.7W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 13FEB2021 09:44:36  38.8N  122.8W Md=2.6  EMSC   NORTHERN CALIFORNIA

O: 13FEB2021 22:05:17  38.8N  122.7W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 13FEB2021 07:55:27  38.8N  122.7W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P: 14FEB2021 131217    38.7N  122.7W 2.5-4.7 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in the California Geysers was felt with intensity II-III in the area(s) of the California Geysers at Guerneville.

 

O: 13FEB2021 10:21:09  32.7N  115.8W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 11FEB2021 131250    32.6N  116.1W 2.5-4.6 AAAAA  So. California             

 

O: 13FEB2021 12:08:30  33.6N  118.3W ML=2.8  EMSC   SAN PEDRO CHANNEL, CALIFORNIA

P: 12FEB2021 131252    33.6N  118.5W 2.5-4.6 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.6 south of Los Angeles, California  was felt with intensity II-III in the area(s) south of Los Angeles, California at San Pedro, Rancho Palos Verdes, Lawndale, Costa Mesa, Bellflower, North Hollywood, Pasadena.

 

O: 14FEB2021 05:05:27  35.0N  119.2W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P: 12FEB2021 131257    34.7N  119.0W 2.5-4.3 AAAAA  So. California             

 

O: 13FEB2021 12:46:16  36.2N  118.0W ML=2.1  EMSC   CENTRAL CALIFORNIA            

P: 17FEB2021 131208    36.1N  118.1W 2.5-4.3 BAAAA  California/Nevada area     

 

O: 13FEB2021 16:21:08  37.5N  118.8W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 15FEB2021 131210    37.6N  118.6W 2.5-4.7 AAAAA  California/Nevada area     

 

O: 13FEB2021 11:14:08  39.3N  121.5W Md=2.7  EMSC   NORTHERN CALIFORNIA          

P: 14FEB2021 131300    40.0N  120.9W 2.5-4.6 AAAAA  Northern California        

 

NEIC reported this earthquake of M 2.7 in Northern California was felt with intensity II-III in the area(s) of Northern California at Bangor (IV), Oroville and Sacramento.

 

O: 14FEB2021 06:39:19  40.3N  124.6W Md=2.9  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 15FEB2021 131303    40.6N  124.9W 2.5-4.9 AAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O: 13FEB2021 13:20:02  57.1N  155.1W ml=3.4  EMSC   ALASKA PENINSULA             

O: 13FEB2021 13:08:54  57.2N  155.2W Mw=5.3  EMSC   ALASKA PENINSULA

P:  5FEB2021 131033    56.0N  156.0W 3.0-4.6 CBAAA  Alaska Peninsula           

P: 17FEB2021 131321    54.7N  156.9W 3.5-4.8 BCAAA  Alaska Peninsula           

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 14FEB2021 05:54:40  43.3N  126.8W ML=3.2  EMSC   OFF COAST OF OREGON          

P: 17FEB2021 131304    43.1N  126.5W 3.0-4.6 BAAAA  Off Coast of Oregon         

 

O: 13FEB2021 18:15:00  49.3N  120.5W Ml=2.2  EMSC   BRITISH COLUMBIA, CANADA     

P: 11FEB2021 131318    48.9N  122.1W 2.0-4.2 AABAA  Washington state, U.S.     

 

O: 14FEB2021 01:33:11  51.2N  115.6W MB=3.9  ECAN Banff, AB. Felt   

O: 14FEB2021 01:33:10  51.2N  115.6W mb=4.4  EMSC   ALBERTA, CANADA              

P: 17FEB2021 131322    52.0N  115.0W 2.0-4.2 BAAAA  Alberta                    

 

ROCKY MOUNTAINS REGION

 

O: 13FEB2021 12:55:08  31.7N  104.4W ML=2.8  EMSC   WESTERN TEXAS

O: 13FEB2021 12:40:14  31.6N  104.2W ML=2.6  EMSC   WESTERN TEXAS                

P: 14FEB2021 131245    31.5N  104.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

O: 14FEB2021 02:17:22  39.1N  109.3W ML=2.8  EMSC   UTAH                         

P: 15FEB2021 131270    39.7N  110.8W 2.0-3.9 AABAA  Utah area                  

P: 17FEB2021 131223    38.3N  108.9W 2.0-4.0 BAAAA  Colorado area              

 

EASTERN U.S./CANADA

 

O: 13FEB2021 08:23:42  34.4N   97.4W mb=2.9  EMSC   OKLAHOMA

O: 13FEB2021 08:46:15  34.4N   97.5W ML=2.2  EMSC   OKLAHOMA

O: 13FEB2021 07:26:06  34.9N   97.6W mb=2.6  EMSC   OKLAHOMA                     

O: 13FEB2021 22:01:36  35.7N   97.6W mb=2.3  EMSC   OKLAHOMA                     

P: 15FEB2021 131264    35.0N   97.0W 2.0-4.0 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.2 in Southern Oklahoma was felt with intensity II-III in the area(s) of Southern Oklahoma at Graham.

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

NEIC reported this earthquake of M 2.7 in Oklahoma was felt with intensity II-III in the area(s) of Oklahoma at Edmond, Piedmont, Yukon, Deer Creek and in Topeka, Kansas.

 

HAWAII

 

O: 13FEB2021 23:28:41  19.2N  155.5W ML=3.7  EMSC   ISLAND OF HAWAII, HAWAII     

P: 13FEB2021 131165    18.8N  155.2W 3.0-4.4 AAAAA  Hawaii                     

P: 16FEB2021 131165    19.2N  155.1W 3.0-4.4 BAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.1 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Hawaii National Park, Naalehu, Catain Cook Volcano, Holualoa, Kealakekua, Keaau, Papaikou, Kailua Kona and Honokaa.

An earlier M 3.0 was felt with intensity II in Kailua Kona.

 

 

 

 

 

STRONG QUAKE SHAKES TAJIKISTAN; INDIA

 

EARTHQUAKE SUMMARY FOR FEBRUARY 12, 2021

 

A strong earthquake of M 5.9-6.3 shook the region of Tajikistan today.

The epicenter is in a remote area of southeastern Tajikistan in the Badakhstan National Park. CENC reported this earthquake at 38.1N 73.6E with M 6.1 at a depth of 100 km. The Indian National Centre for Seismology (NCS) reported M 6.3 for this quake. EMSC reported it was felt with moderate intensity in India at Uri, Srinigar, Delhi, Uttarakhand, Himachal Pradesh, Haryana, and in Shupiyan among others. It was also felt in Salor and Tashkent, Uzbekistan, in Kabul, Afghanistan, and in Kashgar Prefecture, China. This event at intermediate depth was widely felt in Central Asia with NEIC giving maximum intensity VIII in Murgob and Karakendzha, Tajikistan and IV in Dushanbe, and in Pakistan in Hunza, Gilgit, Mingaora, and V in Muzafferabad, Mansehra as well as in Baramula, Jammu and Kashmir, India. Internet photos showed some damage in the areas near the epicenter including cracked buildings and damaged roadways.

 

The area had been expected to see strongly enhanced seismicity at this time as this is an interesting event from the triggering point of view.  It is located within a degree of the maximum tidal stress longitude given by the tidal forecast in previous issues of this summary (75E vs 74E) near local solar midnight, a time when such stresses are maximized, and was probably strongly promoted by tidal effects. This was previously noted in previous issues of this summary as possible:

 

"The new moon arrived at 19:06 on February 11, 2021. Longitudes which are at local solar noon at this time are near 105W and 75E. In the west these include western North America and portions of the East Pacific Rise and in the east portions of the central Indian Ocean and Central Asia near Hindu Kush and Afghanistan among others. These areas are most likely to see tidal triggering in the next week. A large earthquake is possible in this time and tidal triggering is not limited to these regions." (February 8-12, 2021)

 

Furthermore, it is also near the antipode of the M 6.7 in the West Chile Rise M 6.7 of February 3 and at 104-106 degrees from the activity in the Loyalty Islands of February 10, a distance at which strong aftershock activity is expected following major earthquakes due to reflection and refraction of energy to the surface off the core-mantle boundary. This possibility had been noted in the FFA forecast for the Loyalty Islands on February 11-12, 2021 as:

 

 

"Far field triggering from the activity in the Loyalty Islands is expected to be robust. This is due, not only to the great size of the mainshock but also to the regions which are near 103 degrees from this epicenter. Areas at 103 degrees from the Loyalty Islands include western Canada, Oklahoma in the U.S. Oaxaca, Chiapas, Mexico, Guatemala, Panama, Ecuador, Peru, Chile in South America, India, China, Afghanistan in Asia." (February 11-12, 2021)

 

Other events near 103 degrees from the Loyalty Islands today of moderate magnitude occurred in Oklahoma, El Salvador, Texas, Chiapas, Mexico, Oaxaca, Mexico, Central Chile. When an M 4.6 regional foreshock occurred in Tajikistan yesterday, this summary noted:

 

 

"An M 4.6 also shook the region of Tajikistan today. This epicenter is near

104 degrees from the Loyalty Islands, as noted above and is also at the maximum tidal stress longitude with the new moon and occurred within about an hour of local solar midnight, a prime time for tidal triggering." (February 11-12, 2021)

 

The last earthquake in the area of Tajikistan within about 150 km of this epicenter with M>=5.9 was an M 6.6 on November 25, 2016. The last within about 100 km of this was an M 7.2 on December 7, 2015.  Forecast 131226 had expected today's event within about 50 km of this epicenter was likely around February 13-14.

 

O: 12FEB2021 10:15:20  38.5N   73.5E mb=4.0  EMSC   TAJIKISTAN

O: 12FEB2021 17:01:35  38.1N   73.6E Mw=5.9  EMSC   TAJIKISTAN                   

O: 12FEB2021 17:01:35  38.1N   73.6E Mw=6.1  CENC   TAJIKISTAN                   

O: 12FEB2021 17:01:35  38.1N   73.6E Mw=6.3  NSCC   TAJIKISTAN                   

P: 13FEB2021 131226    39.0N   72.0E 3.8-5.3 AAAAA  Hindu Kush/Pakistan        

P: 14FEB2021 131226    38.0N   74.0E 3.8-5.4 AAAAA  Hindu Kush/Pakistan        

 

A moderate earthquake of M 4.1 occurred today in the Fukushima area of Japan north of Tokyo. Recent activity in the area has included a number of moderate quakes in 2021, the largest of which was an M 4.8 on January 23, 2021. The  last earthquake of M>=5 was an M 5.5 on November 22, 2020 in association with a strong geomagnetic storm. This summary had noted at the time:

 

"The strongest earthquake in the world today was an M 5.5 north of Tokyo east of Honshu, Japan. NEIC reported maximum intensity V in Ibaraki, Tochigi and Fukushima; IV in Chiba, Japan. This is the strongest earthquake within about 150 km of this epicenter since an M 5.9 in June 24, 2020." (November 23, 2020)

 

Forecasts 130940 and 131242 had expected today's activity in early to mid-February. This area is near the sixth node (60 degrees) from the northern limit of the Loyalty Islands and may be subject to FFA triggering.

 

O: 12FEB2021 15:52:30  36.4N  141.1E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  7FEB2021 130940    37.0N  142.0E 4.0-5.4 BAAAA  Off East Coast Honshu      

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 ABAAA  Off East Coast Honshu      

 

The largest earthquake in the western hemisphere today was an M 5.2-5.3 in southern  Ecuador. NEIC reported it was felt with intensity II-III in Ecuador at Pueblo Viejo, Los Rios, and in Loja at Celica, Cariamanga and Loja. The last earthquake within about 200 of this epicenter with M>=5.2 was an M 5.5 on October 18, 2020 and a similar event on August 25, 2020. A major earthquake of M 7.5 hit the region about 300 km northeast of this on February 22, 2019. Like the event in Tajikistan this epicenter is at 104 degrees from the M 7.7 in the Loyalty Islands and was probably promoted by energy from that source. Forecast 131131 had expected today's event within about 25 km was likely around February 11.

 

O: 13FEB2021 05:18:33   4.1S   80.2W Mw=5.2  EMSC   PERU-ECUADOR BORDER REGION   

O: 13FEB2021 05:18:33   4.1S   80.2W Mw=5.3  ANSS   PERU-ECUADOR BORDER REGION   

P: 11FEB2021 131131     4.0S   80.0W 4.0-5.8 AAAAA  Ecuador                    

 

The largest earthquake today in the U.S. or Canada was an M 4.0 in Central California near Olancha. NEIC reported it was felt with intensity II-III in Central California in East Tulare County, Lone Pine, Inyokern, Kernville, Springville, Ridgecrest, Three Rivers, Lake Isabella, Trona and Bodfish.

It was followed by several felt aftershocks. This is the strongest event in the Ridgecrest, California aftershock zone since an M 3.9-4.0 on January 17, 2021. The last event within the Ridgecrest area with larger magnitude was an M 4.2 on June 4, 2020. A larger event of M 5.8 hit about 30 km north of this on June 24, 2020.  This activity is at the fourth node (90 degrees) from the Loyalty Islands M 7.7 of February 10 and was probably promoted by energy from that source. Forecast 131208 had expected  today's activity was likely within about 25 km around February 17.

 

O: 13FEB2021 00:23:35  35.6N  117.4W ML=2.6  EMSC   SOUTHERN CALIFORNIA           

O: 12FEB2021 18:34:01  35.6N  117.4W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 12FEB2021 23:57:12  36.2N  117.9W Mw=4.0  EMSC   CENTRAL CALIFORNIA           

O: 13FEB2021 00:08:35  36.2N  117.9W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 13FEB2021 00:11:51  36.2N  117.9W ML=2.8  EMSC   CENTRAL CALIFORNIA

O: 13FEB2021 02:06:39  36.2N  117.9W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 13FEB2021 03:55:22  36.2N  117.9W ML=2.6  EMSC   CENTRAL CALIFORNIA

P: 17FEB2021 131208    36.1N  118.1W 2.5-4.3 BAAAA  California/Nevada area     

 

Moderate to large aftershocks also continued in the Loyalty Islands today. The largest of these was an M 5.9. These were not reported felt in this area. Forecast 131386 had expected this activity in mid-February.

 

O: 13FEB2021 05:15:21  23.0S  171.7E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 13FEB2021 05:19:51  23.1S  172.2E mb=4.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 07:49:34  23.2S  171.2E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 10:06:01  23.2S  171.6E mb=5.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 11:05:38  23.2S  171.7E Mw=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 10:34:13  23.3S  171.6E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 14:54:22  23.3S  171.9E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 20:55:15  23.3S  171.6E Mw=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 13FEB2021 05:09:12  23.3S  171.6E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 08:33:53  23.4S  171.1E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 10:04:03  22.5S  171.7E Mw=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 11FEB2021 131386    23.0S  172.0E 4.0-5.5 AAAAA  Loyalty Islands            

P: 14FEB2021 131386    22.0S  172.0E 4.0-5.3 AAAAA  Loyalty Islands            

P: 14FEB2021 131386    23.0S  171.0E 4.0-5.4 AAAAA  Loyalty 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: 12FEB2021 07:46:32  24.8N  122.7E Mw=4.6  EMSC   TAIWAN REGION                

P: 12FEB2021 131198    25.0N  123.0E 4.0-5.5 AAAAA  Ryukyu Islands             

P: 13FEB2021 131203    24.0N  123.0E 4.0-5.5 AAAAA  Taiwan                     

 

O: 12FEB2021 10:15:20  38.5N   73.5E mb=4.0  EMSC   TAJIKISTAN

O: 12FEB2021 17:01:35  38.1N   73.6E Mw=5.9  EMSC   TAJIKISTAN                   

P: 13FEB2021 131226    39.0N   72.0E 3.8-5.3 AAAAA  Hindu Kush/Pakistan        

P: 14FEB2021 131226    38.0N   74.0E 3.8-5.4 AAAAA  Hindu Kush/Pakistan        

 

O: 13FEB2021 06:13:19  38.3N   69.6E mb=4.5  EMSC   TAJIKISTAN                   

P: 13FEB2021 131226    39.0N   72.0E 3.8-5.3 AABAA  Hindu Kush/Pakistan         

 

O: 12FEB2021 11:10:24  51.5N  100.5E mb=4.0  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 17FEB2021 131339    51.0N   98.0E 3.0-4.4 BABAA  So. Siberia                

 

O: 12FEB2021 22:28:40  55.4N  162.4E mb=4.2  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 11FEB2021 131331    55.0N  166.0E 4.0-5.7 AACAA  Komandorsky Isl            

 

INDONESIA AND PHILIPPINES

 

O: 13FEB2021 05:34:45   0.7N   97.4E ML=4.6  EMSC   NIAS REGION, INDONESIA       

P: 14FEB2021 131124     1.0N   97.0E 4.0-5.3 AAAAA  Nicobar Islands            

 

O: 12FEB2021 12:49:37   0.9S  131.3E Mw=4.6  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 17FEB2021 131153     2.0S  133.0E 4.0-5.6 BBBAA  West Irian, PNG            

 

O: 12FEB2021 15:38:58   3.9S  134.9E ML=4.4  EMSC   PAPUA, INDONESIA              

P:  8FEB2021 130851     3.0S  134.0E 4.0-5.3 BAAAA  West Irian, PNG            

 

O: 12FEB2021 07:01:40   5.3S  103.1E ML=4.7  EMSC   SOUTHERN SUMATRA, INDONESIA  

O: 13FEB2021 04:18:26   6.3S  103.7E mb=5.0  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

P: 13FEB2021 131149     6.0S  104.0E 4.0-5.8 AAAAA  So. of Sumatera            

 

O: 12FEB2021 20:50:42   5.4S  142.8E mb=4.6  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 11FEB2021 131144     7.0S  144.0E 4.0-5.4 ABAAA  Papua New Guinea           

 

O: 13FEB2021 03:03:13   5.5S  101.9E ML=4.2  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P: 11FEB2021 131149     6.0S  102.0E 4.0-5.4 AAAAA  So. of Sumatera            

 

O: 13FEB2021 04:30:59   6.1S  103.9E mb=5.2  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P: 13FEB2021 131149     6.0S  104.0E 4.0-5.8 AAAAA  So. of Sumatera            

 

O: 12FEB2021 21:53:43   6.4S  130.0E mb=4.6  EMSC   BANDA SEA                    

P: 15FEB2021 131127     6.0S  129.0E 4.0-5.3 BAAAA  Banda Sea                  

P: 15FEB2021 131153     6.0S  131.0E 4.0-5.4 BAAAA  West Irian, PNG            

 

O: 12FEB2021 18:27:10   7.5S  128.4E mb=4.5  EMSC   KEPULAUAN BARAT DAYA, INDONESI

O: 13FEB2021 05:36:25   8.8S  129.3E ML=4.7  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 11FEB2021 131127     8.0S  129.0E 4.0-5.3 AAAAA  Banda Sea                  

 

O: 12FEB2021 16:51:29  11.6S  118.3E ML=4.1  EMSC   SOUTH OF SUMBAWA, INDONESIA  

P:  7FEB2021 131070    11.0S  118.0E 4.0-5.4 BAAAA  So. of Indonesia           

 

O: 13FEB2021 04:02:00  11.8N  143.7E mb=5.0  EMSC   SOUTH OF MARIANA ISLANDS     

P: 14FEB2021 131183    12.0N  145.0E 4.0-5.4 AAAAA  So. Marianas/Guam          

 

O: 12FEB2021 12:32:58  15.5N  118.3E mb=4.2  EMSC   PHILIPPINE ISLANDS REGION    

P: 14FEB2021 131171    18.0N  120.0E 3.5-4.8 ACBAA  Luzon, Philippines         

 

 

CENTRAL AND SOUTH AMERICA

 

O: 12FEB2021 19:06     30.7S   71.4W mb=4.0  GUC    Coquimbo at Punitaqui, III in

P: 12FEB2021 131403    30.0S   71.0W 4.0-5.7 AAAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity  IV in  Coquimbo at Punitaqui, III in Combarbala, Ovalle and Rio Hurtado, Chile.

 

O: 12FEB2021 09:43     33.5S   71.5W mb=4.2  GUC    Valparaiso at Cartagena, Elk T

P: 14FEB2021 131398    32.0S   72.0W 4.0-6.1 ABAAA  Central Chile               

 

GUC reported this earthquake was felt with intensity  IV in  Valparaiso at Cartagena, Elk Tabo, San Antonio, Santo Domingo; III in Casablanca and II ikn Olmue; Santiago with III in Colina, El Monte, Lo Barnechea, Melipilla, Tiltil, and O'Higgins with III in Codegua, Graneros, Mostazal, Rancagua, Chile.

 

O: 12FEB2021 19:06:10   2.6S   79.2W ML=4.1  EMSC   NEAR COAST OF ECUADOR        

P:  8FEB2021 130834     2.0S   78.0W 4.0-5.4 BABAA  Ecuador                    

 

O: 13FEB2021 05:18:33   4.1S   80.2W Mw=5.2  EMSC   PERU-ECUADOR BORDER REGION   

P: 11FEB2021 131131     4.0S   80.0W 4.0-5.8 AAAAA  Ecuador                    

 

O: 12FEB2021 18:32:30   8.0N   82.9W ML=4.1  EMSC   PANAMA-COSTA RICA BORDER REGIO

O: 13FEB2021 05:58:58   8.7N   83.1W ML=4.1  EMSC   COSTA RICA

P: 16FEB2021 131118     7.0N   82.0W 3.5-5.1 BAAAA  Costa Rica                 

 

O: 13FEB2021 05:08:09  13.8N   92.2W ML=4.3  EMSC   OFFSHORE GUATEMALA           

P: 16FEB2021 131159    14.0N   93.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O: 12FEB2021 19:45:43  15.2N   93.1W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 11FEB2021 131159    15.0N   93.0W 3.5-5.1 AAAAA  Chiapas, Mexico            

 

O: 13FEB2021 06:31:39  15.5N   95.0W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O: 12FEB2021 20:06:00  15.8N   94.9W ML=4.3  EMSC   OFFSHORE OAXACA, MEXICO

O: 12FEB2021 06:50:49  15.3N   94.6W ML=4.3  EMSC   OFF COAST OF OAXACA, MEXICO  

O: 13FEB2021 06:28:53  15.5N   95.0W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13FEB2021 131160    15.0N   95.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

 

O: 13FEB2021 09:15:00  16.7N   93.9W ML=4.1  EMSC   CHIAPAS, MEXICO              

P: 11FEB2021 131159    15.0N   93.0W 3.5-5.1 ABAAA  Chiapas, Mexico            

 

O: 12FEB2021 10:05:42  18.0N   67.0W Md=3.6  EMSC   PUERTO RICO                  

P: 11FEB2021 131181    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 12FEB2021 22:54:52  18.3N  101.2W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 13FEB2021 131173    17.0N  102.0W 3.5-5.0 ABAAA  Michoacan, Mexico          

P: 16FEB2021 131174    19.0N  102.0W 3.5-5.1 BAAAA  Michoacan, Mexico          

 

O: 12FEB2021 21:45:51  18.7N   69.6W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 10FEB2021 130879    18.0N   69.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 13FEB2021 04:15:04  19.6N   66.3W Md=3.0  EMSC   PUERTO RICO REGION           

P: 16FEB2021 131186    20.0N   66.0W 3.0-4.4 BAAAA  Bahamas/No. Caribbean      

 

O: 12FEB2021 09:12:23  20.0N   70.2W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 14FEB2021 131182    20.0N   71.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 13FEB2021 03:54:42  23.9S   66.9W mb=4.2  EMSC   JUJUY, ARGENTINA             

O: 12FEB2021 09:31:26  24.0S   67.1W ML=4.0  EMSC   SALTA, ARGENTINA

P: 15FEB2021 131382    24.0S   66.0W 4.0-5.9 AAAAA  Argentina                  

 

O: 12FEB2021 11:36:35  25.2S   71.1W ML=4.0  EMSC   OFF COAST OF ANTOFAGASTA, CHIL

P: 17FEB2021 131383    26.0S   71.0W 4.0-5.4 BAAAA  Coast Central Chile         

 

O: 12FEB2021 19:06:44  30.7S   71.4W ML=4.1  EMSC   COQUIMBO, CHILE

O: 12FEB2021 09:50:22  30.7S   71.5W Mw=4.5  EMSC   COQUIMBO, CHILE              

P: 12FEB2021 131403    30.0S   71.0W 4.0-5.7 AAAAA  Coast Central Chile        

 

NEIC reported this earthquake of M 4.5 in Coquimbo, Chile was felt with intensity II-III in the area(s) of Coquimbo, Chile at Ovalle and Coquimbo and in Quilpue, Valparaiso.

 

O: 12FEB2021 09:43:28  33.5S   71.6W mb=4.3  EMSC   VALPARAISO, CHILE            

P: 14FEB2021 131398    32.0S   72.0W 4.0-6.1 ABAAA  Central Chile              

 

NEIC reported this earthquake of M 4.3 in Valparaiso, Chile was felt with intensity III-IV in the area(s) of Valparaiso, Chile at San Antonio, Quilpue, Valparaiso and in Santiago at Lampa, Buin and in O'Higgins.

 

AFRICA AND EUROPE

 

O: 12FEB2021 22:08:21  39.4N    8.9W ML=3.5  EMSC   PORTUGAL                     

P:  6FEB2021 130927    39.0N    8.0W 3.5-4.8 CAAAA  Morocco/Spain              

 

O: 13FEB2021 03:55:22  45.4N   16.2E ML=4.0  EMSC   CROATIA                      

P: 12FEB2021 131285    44.0N   16.0E 3.0-5.3 ABAAA  Italy                      

P: 16FEB2021 131275    45.0N   16.0E 3.0-4.9 BAAAA  Adriatic Sea               

 

EMSC reported this earthquake of M 4.1 in Croatia was felt with intensity II-IV in the area(s) of  Croatia at Petrinja, Mala Corica, Sisak, Zabno, Zahreb and in general within about 50 km of the epicenter.

 

O: 13FEB2021 02:29:30  64.6N   17.4W ML=4.3  EMSC   ICELAND                      

P: 15FEB2021 131352    66.0N   17.0W 3.0-4.4 ABAAA  Iceland area               

 

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

 

SOUTHWEST PACIFIC

 

O: 13FEB2021 05:15:21  23.0S  171.7E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 13FEB2021 05:19:51  23.1S  172.2E mb=4.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 07:49:34  23.2S  171.2E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 10:06:01  23.2S  171.6E mb=5.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 11:05:38  23.2S  171.7E Mw=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 10:34:13  23.3S  171.6E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 14:54:22  23.3S  171.9E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 20:55:15  23.3S  171.6E Mw=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 13FEB2021 05:09:12  23.3S  171.6E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 08:33:53  23.4S  171.1E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 10:04:03  22.5S  171.7E Mw=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 11FEB2021 131386    23.0S  172.0E 4.0-5.5 AAAAA  Loyalty Islands            

P: 14FEB2021 131386    22.0S  172.0E 4.0-5.3 AAAAA  Loyalty Islands            

P: 14FEB2021 131386    23.0S  171.0E 4.0-5.4 AAAAA  Loyalty Islands            

 

O: 12FEB2021 07:28:58  17.7S  178.6W mb=4.3  EMSC   FIJI REGION                  

P: 13FEB2021 131378    18.0S  177.0W 4.0-5.6 AABAA  Tonga Islands              

P: 17FEB2021 131378    17.0S  179.0W 4.0-5.9 BAAAA  Tonga Islands               

 

O: 12FEB2021 19:19:14  25.0S  179.2W mb=4.4  EMSC   SOUTH OF FIJI ISLANDS        

P:  6FEB2021 131086    25.0S  179.0W 4.0-5.8 CAAAA  Tonga Islands              

P: 13FEB2021 131392    24.0S  177.0W 4.0-5.9 AABAA  Tonga Islands               

 

O: 12FEB2021 19:51:29  21.6S  174.2E mb=4.6  EMSC   VANUATU REGION               

P: 14FEB2021 131386    22.0S  172.0E 4.0-5.3 AABAA  Loyalty Islands            

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 13FEB2021 01:41:27  36.3S  178.7E ML=3.7  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 11FEB2021 131408    37.0S  178.0E 3.0-4.3 AAAAA  North Island, N.Z.         

 

O: 12FEB2021 10:09:10  36.6S  175.4E ML=3.7  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 17FEB2021 131409    38.0S  176.0E 3.0-4.4 BBAAA  North Island, N.Z.         

 

O: 12FEB2021 11:08:42  37.5S  175.5E ML=3.6  EMSC   NORTH ISLAND OF NEW ZEALAND  

P: 13FEB2021 131410    39.0S  175.0E 3.0-4.7 ABAAA  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: 12FEB2021 15:52:30  36.4N  141.1E ML=4.1  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  7FEB2021 130940    37.0N  142.0E 4.0-5.4 BAAAA  Off East Coast Honshu      

P: 14FEB2021 131242    38.0N  142.0E 4.0-5.5 ABAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 12FEB2021 10:11:33  31.1N  116.5W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 12FEB2021 131248    32.1N  116.4W 2.5-4.7 AAAAA  So. California             

 

O: 12FEB2021 22:15:05  33.0N  115.8W Ml=2.4  EMSC   SOUTHERN CALIFORNIA          

P: 11FEB2021 131250    33.0N  115.9W 2.5-4.4 AAAAA  So. California             

 

O: 12FEB2021 16:01:52  33.6N  116.8W Ml=2.4  EMSC   SOUTHERN CALIFORNIA          

P: 11FEB2021 131253    33.9N  116.9W 2.5-4.3 AAAAA  So. California             

 

O: 13FEB2021 00:23:35  35.6N  117.4W ML=2.6  EMSC   SOUTHERN CALIFORNIA          

O: 12FEB2021 18:34:01  35.6N  117.4W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 12FEB2021 23:57:12  36.2N  117.9W Mw=4.0  EMSC   CENTRAL CALIFORNIA           

O: 13FEB2021 00:08:35  36.2N  117.9W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 13FEB2021 00:11:51  36.2N  117.9W ML=2.8  EMSC   CENTRAL CALIFORNIA

O: 13FEB2021 02:06:39  36.2N  117.9W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 13FEB2021 03:55:22  36.2N  117.9W ML=2.6  EMSC   CENTRAL CALIFORNIA

P: 17FEB2021 131208    36.1N  118.1W 2.5-4.3 BAAAA  California/Nevada area     

 

O: 12FEB2021 17:09:30  36.6N  121.2W Md=2.1  EMSC   CENTRAL CALIFORNIA

O: 12FEB2021 17:07:13  36.6N  121.2W ML=2.8  EMSC   CENTRAL CALIFORNIA           

O: 12FEB2021 17:07:13  36.6N  121.2W ML=3.0  ANSS   CENTRAL CALIFORNIA           

P: 13FEB2021 131215    36.8N  121.3W 2.5-5.1 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 Hollister, San Juan Bautista, Los Banos.

 

O: 13FEB2021 01:34:20  38.2N  118.1W ml=2.0  EMSC   NEVADA                       

O: 13FEB2021 05:57:54  38.2N  118.1W ml=2.0  EMSC   NEVADA

P: 14FEB2021 131209    38.0N  118.8W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 13FEB2021 08:02:43  38.8N  122.7W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 13FEB2021 07:55:27  38.8N  122.7W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P: 14FEB2021 131217    38.7N  122.7W 2.5-4.7 AAAAA  Central California         

 

O: 12FEB2021 17:17:32  39.4N  120.3W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 13FEB2021 131212    39.3N  120.0W 2.5-4.7 AAAAA  California/Nevada area     

 

O: 12FEB2021 14:27:06  40.0N  120.7W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P: 14FEB2021 131300    40.0N  120.9W 2.5-4.6 AAAAA  Northern California        

 

ALASKA

 

O: 12FEB2021 14:14:46  54.2N  159.8W ml=3.5  EMSC   SOUTH OF ALASKA              

P: 14FEB2021 131321    54.8N  159.3W 3.5-5.3 AAAAA  Alaska Peninsula           

 

O: 12FEB2021 23:09:01  63.3N  151.2W ML=3.0  EMSC   CENTRAL ALASKA               

P: 14FEB2021 131351    63.2N  151.4W 3.2-5.0 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 12FEB2021 07:14:45  46.0N  119.0W Md=2.4  EMSC   OREGON                       

P: 15FEB2021 131317    47.7N  120.3W 2.0-4.2 BBAAA  Washington state, U.S.     

 

O: 12FEB2021 20:28:01  47.6N  122.6W Md=2.5  EMSC   SEATTLE-TACOMA AREA, WASHINGTON

O: 12FEB2021 11:43:35  47.6N  122.6W ML=2.4  EMSC   SEATTLE-TACOMA AREA, WASHINGTO

P: 13FEB2021 131316    47.5N  121.8W 2.0-4.3 AAAAA  Washington state, U.S.     

 

O: 12FEB2021 12:27:25  62.2N  124.3W MB=3.1  ECAN Wrigley, NT    

O: 12FEB2021 12:27:25  62.2N  124.3W ML=3.1  EMSC   NORTHWEST TERRITORIES, CANADA

P: 10FEB2021 131050    62.1N  124.2W 2.5-4.0 AAAAA  Northwest Terr., Canada    

 

ROCKY MOUNTAINS REGION

 

O: 12FEB2021 23:34:03  31.6N  104.2W ML=2.5  EMSC   WESTERN TEXAS                

P: 14FEB2021 131245    31.5N  104.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

O: 12FEB2021 07:21:43  44.4N  114.7W Ml=2.9  EMSC   SOUTHERN IDAHO

O: 12FEB2021 21:03:58  44.2N  115.1W ML=2.7  EMSC   SOUTHERN IDAHO               

P: 15FEB2021 131291    44.5N  115.3W 2.0-4.1 BAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 13FEB2021 05:27:17  36.1N   83.6W Md=2.6  EMSC   EASTERN TENNESSEE

O: 12FEB2021 08:27:31  36.1N   82.5W mb=2.9  EMSC   EASTERN TENNESSEE            

P: 16FEB2021 131228    37.0N   83.0W 2.0-4.0 BAAAA  Kentucky/Tennessee/NC      

 

NEIC reported this earthquake of M 2.8 in Southeastern Tennessee was felt with intensity III-IV in the area(s) of Southeastern Tennessee at  Erwin, Flag Pond, Green Mountain, Telford, Jonesborough, Burnsville, Bakersville, Johnson Cikty and in Weaverville, North Carolina.

 

O: 13FEB2021 08:46:15  34.4N   97.5W ML=2.2  EMSC   OKLAHOMA

O: 13FEB2021 07:26:06  34.9N   97.6W mb=2.6  EMSC   OKLAHOMA

O: 13FEB2021 08:23:42  34.4N   97.4W mb=2.9  EMSC   OKLAHOMA                     

P: 15FEB2021 131264    35.0N   97.0W 2.0-4.0 AAAAA  Southern Plains             

 

O: 12FEB2021 07:24:07  36.2N   98.2W ML=2.0  EMSC   OKLAHOMA                     

O: 12FEB2021 07:35:42  36.5N   99.0W ML=2.0  EMSC   OKLAHOMA                     

P: 11FEB2021 131265    36.0N   98.0W 2.0-3.9 AAAAA  Southern Plains             

 

O: 12FEB2021 05:11:58  72.3N   76.0W MB=2.6  ECAN Pond Inlet, NU   

O: 11FEB2021 04:14:56  72.4N   76.1W MB=2.6  ECAN Pond Inlet, NU   

O: 12FEB2021 05:15:45  72.2N   75.9W MB=2.7  ECAN Pond Inlet, NU                 

P: 13FEB2021 131360    73.3N   73.5W 2.5-3.9 AAAAA  Baffin/Davis Strait Canada 

 

O: 11FEB2021 18:17:33  50.0N   66.4W MB=2.0  ECAN Sept-Iles, QC                  

P: 14FEB2021 131289    49.3N   67.5W 2.0-3.8 BAAAA  Maine                      

 

HAWAII

 

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

 

MODERATE LOYALTY ISLANDS AFTERSHOCKS CONTINUE

 

EARTHQUAKE SUMMARY FOR FEBRUARY 11, 2021

 

Moderate to strong aftershocks continued today in the Loyalty Islands following the M 7.7 there on February 10. The mainshock triggered a minor tsunami which was observed in Norfolk Island to the south and may have been observed as far as New Zealand. Tsunami warnings were in place for areas as far as New Zealand and Lord Howe Island, Australia.

 

An omission occurred in the previous issue of this summary in terms of expected Far-Field Aftershocks (FFA). The antipode of the Loyalty Islands is in the Atlantic Ocean near the Islands of Madeira and Canary. This area has seen some unusual activity in recent days which may be related to the M 7.7 in the  Loyalty Islands area. The largest of these was an M 4.7 on January 30, 2021 in the Madeira Islands area. This summary had noted this at the time as:

 

"An unusually large earthquake of M 4.7 shook the Madeira Islands of Portugal today. The last earthquake of M>=4.7 in the Madeira Islands area within about 250 km of today's event was an M 5.2 on March 7, 2020, the only such event in the area in the past 30 years. ...  Today's activity follows a major swarm in the Granada, Spain region over the past four days. That swarm saw only minor events today and may be dying out. The M 4.7 in the Madeira Islands occurred within about an hour of local solar noon and may have been enhanced by tidal stresses of the full moon which maximize near this hour." (January 31, 2021)

 

Likewise the largest earthquake in the Canary Islands, near the antipode to the Loyalty Islands, in the past seven months was an M 3.2 on February 4, 2021. Two larger events have hit that area in the past year - an M 3.6 on May 27, 2020 and an M 3.9 on July 16, 2020. Either the Canary Islands or the Madeira Islands could see enhanced seismicity due to antipodal focusing of energy  from the Loyalty Islands M 7.7. Other unusual earthquakes in the antipodal area in the past two weeks included an M 5.7 in Guyana on January 31, 2021 – the largest ever recorded in this area - and an M 5.1 in Guinea on February 3, 2021.

 

O: 11FEB2021 19:45:21  28.0N   16.2W ML=1.8  EMSC   CANARY ISLANDS, SPAIN REGION 

 

The original far-field forecast for the Loyalty Islands in the previous issue of this summary was:

 

"Far field triggering from the activity in the Loyalty Islands is expected to be robust. This is due, not only to the great size of the mainshock but also to the regions which are near 103 degrees from this epicenter. Areas at 103 degrees from the Loyalty Islands include western Canada, Oklahoma in the U.S. Oaxaca, Chiapas, Mexico, Guatemala, Panama, Ecuador, Peru, Chile in South America, India, China, Afghanistan in Asia. Areas at 144 degrees from the Loyalty Islands include Turkey, Eastern Europe and Central Africa. These area may see enhanced seismicity in coming days. Other area subject to seismic promotion include Iran and the northern Caribbean (120 degrees node 3); Southern and Central California, Vancouver, southern Alaska, Myanmar, Mongolia (node 4, 90 degrees); East Pacific Rise, Sumatra, Taiwan, Hokkaido (node 5, 72 degrees); Izu Islands, Philippines, (node 6, 60 degrees) and Banda, Guam, New Guinea (node 5, 51 degrees) among others." (February 10-11, 2021)

 

The strongest aftershock since the last issue of this summary was an M 5.7 and 5.9 at 08:22 UT and 08:39 UT. These occurred in association with a strong Gamma

Ray Burst (GRB), as did the mainshocks yesterday. The parameters of that GRB as listed below as:

 

"The last major Gamma Ray Burst (GRB) according to the online NASA Swift GRB Catalog was observed on February 11, 2021 at 08:43 UT with BAT Fluence  4.2e10-7 erg/cm2 (MAGNITUDE: n/a), Associated earthquake: Loyalty Islands, M 5.7 (08:40 UT); Western Turkey M 3.8 08:45 UT)" (February 11, 2021)

 

Forecasts 131386 had expected today's activity around February 11-14 within about 100 km of this activity.

 

O: 12FEB2021 03:47:48  22.5S  171.2E Mw=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 11:46:08  22.6S  171.1E mb=4.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 16:43:55  22.6S  171.1E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 19:20:39  22.6S  171.5E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 12:44:25  22.7S  171.2E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 20:05:53  22.7S  171.3E Mw=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 21:16:03  22.7S  171.4E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 16:52:35  22.8S  171.7E Mw=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 22:02:38  22.8S  171.6E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 07:23:05  22.9S  171.8E mb=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 08:22:10  22.9S  171.2E Mw=5.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 14:55:18  22.9S  171.8E Mw=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 07:18:40  23.0S  172.0E Mw=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 06:52:32  23.1S  171.6E Mw=6.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 11:19:26  23.1S  172.0E mb=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 16:13:54  23.1S  172.1E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 12:16:38  23.2S  171.9E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 07:56:04  23.3S  171.7E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 08:39:13  23.3S  171.7E Mw=5.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 17:21:08  23.3S  171.5E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 18:05:00  23.4S  171.8E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 04:06:05  23.4S  171.6E Mw=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 19:02:39  23.5S  171.9E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 01:01:29  22.4S  171.3E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 11FEB2021 131386    23.0S  172.0E 4.0-5.5 AAAAA  Loyalty Islands            

P: 14FEB2021 131386    22.0S  172.0E 4.0-5.3 AAAAA  Loyalty Islands            

 

 

An earthquake of M 4.5-4.9 occurred today in the Cook Strait, New Zealand. NEIC reported this earthquake of M 4.5 in Cook Strait, New Zealand was felt with intensity IV in the area(s) of New Zealand in Wanganui and Foxton, North Island and II-III in Hawera, Levin, Kapiti, Wellington, Shannon, Porirua, Palmerston North, Makara-Ohariu and Upper Hutt.   GEONET reported this earthquake was felt with moderate intensity in Cook Strait and northern South Island. 5370 people reported feeling this event; 3460 with weak intensity; 1769 with light shaking; 126 moderate; 9 strong; 3 with severe and 3 with extreme shaking. The last earthquake of larger magnitude in the Cook Strait region was an M 5.0 and M 5.5 on May 26 and 24, 2020, the only such events in the past year. Forecast 131422 had expected today's event was likely within about 15 km was likely around February 14. It is likely this event was promoted by the M 7.7 in the Loyalty Islands.

 

O: 12FEB2021 03:54:10  40.1S  174.1E mb=4.5  EMSC   COOK STRAIT, NEW ZEALAND     

O: 12FEB2021 03:54:11  40.2S  174.1E ML=4.9  GEONET Felt with moderate intensity

P: 14FEB2021 131422    40.0S  174.0E 3.0-4.6 AAAAA  North Island, N.Z.         

 

Several moderate earthquakes were widely felt in the region of Turkey and Iran today. These areas had been expected to see FFA from the Loyalty Islands (see above). The most widely felt of these was an M 4.7 in Central Turkey but an M 4.9 in the Iran-Iraq border region was also felt.

 

The event in Central Turkey was located at 141 degrees from the Loyalty Islands M 7.7, a distance at which strong triggering is expected after major earthquakes as noted in the previous issue of this summary. Similar earthquakes hit this region with M 4.7-4.8 on September 14 and February 12, 2019 and on April 7, 2018 (M 4.7) but the last of larger magnitude within about 150 km of this epicenter was an M 5.0 on November 24, 2013. Forecast 131299 had expected today's event was likely around February 11.  

 

NEIC reported this earthquake of M 4.6-4.7 in Western Turkey was felt with intensity II-III in the area(s) of Western Turkey at Kastamonu and Safranbolu, Karabuk.

 

O: 12FEB2021 03:37:55  41.4N   33.5E mb=4.7  EMSC   CENTRAL TURKEY               

P: 11FEB2021 131299    41.0N   33.0E 3.5-5.1 AAAAA  No. Turkey/Black Sea       

 

The last earthquake of larger magnitude in the Iran-Iraq border within about

150 km of today's event was an M 5.3 on May 11, 2019. Forecasts 130933 and 131237 had expected today's activity was likely around February 10-11.

 

NEIC reported this earthquake of M 4.9 in Iran/Iraq was felt with intensity II-III in the area(s) of Iran in Kermanshah at Gilan Erab, Poke-Zahab and Aslamabad and in Eilam. 

 

O: 11FEB2021 23:22:21  34.7N   45.3E ML=3.6  EMSC   IRAN-IRAQ BORDER REGION      

O: 11FEB2021 22:10:43  34.8N   45.5E mb=4.9  EMSC   IRAN-IRAQ BORDER REGION

P: 10FEB2021 130933    36.0N   46.0E 3.8-5.4 ABAAA  No. Iran                   

P: 11FEB2021 131237    36.0N   46.0E 3.8-5.4 ABAAA  No. Iran                   

 

EMSC also reported an earthquake of M 3.8 in Western Turkey  was felt with intensity II-III in the area(s) of  Turkey at Candarli, Aliaga, Yenisakran, Menemen, Bergama, Karsivaka among others.  Forecast 131005 had expected this activity was likely around February 9. This earthquake was located at 143 degrees from the Loyalty Islands and was probably promoted from that source.

 

O: 11FEB2021 07:36:25  40.7N   30.6E ML=3.7  EMSC   WESTERN TURKEY               

P:  9FEB2021 131005    41.0N   29.0E 3.0-5.1 AAAAA  Romania/NW Turkey          

 

An M 4.6 also shook the region of Tajikistan today. This epicenter is near 104 degrees from the Loyalty Islands, as noted above and is also at the maximum tidal stress longitude with the new moon and occurred within about an hour of local solar midnight, a prime time for tidal triggering. This summary had expected enhanced tidal triggering with this new moon in previous issues as:

 

"The new moon arrived at 19:06 on February 11, 2021. Longitudes which are at local solar noon at this time are near 105W and 75E. In the west these include western North America and portions of the East Pacific Rise and in the east portions of the central Indian Ocean and Central Asia near Hindu Kush and Afghanistan among others. These areas are most likely to see tidal triggering in the next week. A large earthquake is possible in this time and tidal triggering is not limited to these regions." (February 8-12, 2021)

 

O: 11FEB2021 19:34:00  37.4N   72.0E mb=4.6  EMSC   TAJIKISTAN                   

P: 13FEB2021 131226    39.0N   72.0E 3.8-5.3 AAAAA  Hindu Kush/Pakistan        

P: 14FEB2021 131226    37.0N   71.0E 3.8-5.5 BAAAA  Hindu Kush/Pakistan        

 

The strongest earthquake in the U.S. or Canada today was an M 4.4 in the Kodiak Island region of Alaska. NEIC reported this earthquake of M 4.0-4.4 in Kodiak, Alaska was felt with intensity II-III in the area(s) of Kodiak, Alaska and in Homer, Alaska. This is the largest earthquake in the Kodiak area since an M 4.9 about 150 km  southwest of this epicenter occurred on January 3, 2021 and prior to that an M 5.1 on July 8, 2020. Forecast 131345 had expected a moderate quake in this area was possible around February 13.

 

O: 11FEB2021 20:08:51  58.6N  153.5W mb=4.4  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 13FEB2021 131345    60.0N  153.5W 3.2-5.3 ABAAA  Central Alaska             

 

An unusual earthquake of M 2.9 occurred today in the area of northern Virginia.

NEIC reported this earthquake of M 2.9 in Northern Virginia was felt with intensity II-III in the area(s) of Northern Virginia at Jewell Ridge, Richlands, Pounding Mill and Abingdon. An M 5.2 hit about 100 km southeast of this on August 9, 2020 but the last within this radius with M>=2.9 was an M 3.2 on September 13, 2017 and prior to that an M 3.4 on July 18, 2016. Forecast 131228 had expected today's activity within about 10 km was likely around February 16.

 

O: 12FEB2021 03:54:52  37.2N   81.8W mb=2.9  EMSC   VIRGINIA                     

P: 16FEB2021 131228    37.2N   81.9W 2.0-4.1 BAAAA  Kentucky/Tennessee/NC      

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: 12FEB2021 03:31:35  24.9N  122.8E mb=4.2  EMSC   TAIWAN REGION                 

O: 11FEB2021 10:39:40  23.4N  121.4E ML=4.4  TAI    Hualien, Taiwan              

P: 13FEB2021 131203    24.0N  123.0E 4.0-5.5 AAAAA  Taiwan                     

P: 12FEB2021 131198    25.0N  123.0E 4.0-5.5 AAAAA  Ryukyu Islands             

 

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

 

O: 12FEB2021 02:31:47  30.1N   69.7E ML=4.3  EMSC   PAKISTAN                     

P:  6FEB2021 130942    30.0N   70.0E 3.8-5.2 CAAAA  Pakistan                   

P: 14FEB2021 131197    29.0N   68.0E 3.5-4.9 ABBAA  Pakistan                   

 

O: 11FEB2021 19:34:00  37.4N   72.0E mb=4.6  EMSC   TAJIKISTAN                   

P: 13FEB2021 131226    39.0N   72.0E 3.8-5.3 AAAAA  Hindu Kush/Pakistan        

P: 14FEB2021 131226    37.0N   71.0E 3.8-5.5 BAAAA  Hindu Kush/Pakistan        

 

O: 11FEB2021 21:09:49  53.8N  160.5E mb=4.6  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 14FEB2021 131328    53.0N  160.0E 4.0-5.4 BAAAA  E. of Kamchatka            

 

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

 

INDONESIA AND PHILIPPINES

 

O: 12FEB2021 04:38:45   1.6N  126.5E ML=4.4  EMSC   MOLUCCA SEA

O: 11FEB2021 12:21:22   1.0N  126.4E mb=4.9  EMSC   MOLUCCA SEA                  

P: 14FEB2021 131122     1.0N  125.0E 4.0-5.3 BABAA  Mindanao, Philippines      

 

O: 11FEB2021 08:17:42   1.8S  133.5E ML=4.0  EMSC   PAPUA, INDONESIA             

P: 17FEB2021 131153     2.0S  133.0E 4.0-5.6 CAAAA  West Irian, PNG            

 

O: 11FEB2021 20:45:24   1.9N  127.1E ML=4.4  EMSC   HALMAHERA, INDONESIA         

P: 14FEB2021 131120     1.0N  128.0E 4.0-5.3 BAAAA  Halmahera                  

 

O: 11FEB2021 15:35:11   3.5N   96.8E ML=4.1  EMSC   NORTHERN SUMATRA, INDONESIA  

P:  9FEB2021 130826     3.0N   95.0E 4.0-5.7 AABAA  Nicobar Islands            

 

O: 12FEB2021 07:01:40   5.3S  103.1E ML=4.7  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 13FEB2021 131149     6.0S  104.0E 4.0-5.8 AAAAA  So. of Sumatera            

 

O: 11FEB2021 18:07:33   5.9N  125.7E ML=4.3  EMSC   MINDANAO, PHILIPPINES        

P: 13FEB2021 131123     6.0N  126.0E 4.0-5.3 AAAAA  Mindanao, Philippines      

 

O: 11FEB2021 15:09:34   5.9S  101.8E mb=4.9  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P: 11FEB2021 131149     6.0S  102.0E 4.0-5.4 AAAAA  So. of Sumatera            

 

O: 11FEB2021 15:28:07   5.9S  130.6E ML=4.0  EMSC   BANDA SEA                    

P: 15FEB2021 131153     6.0S  131.0E 4.0-5.4 BAAAA  West Irian, PNG             

 

O: 12FEB2021 05:05:09   9.3S  111.2E mb=4.5  EMSC   SOUTH OF JAVA, INDONESIA     

P: 15FEB2021 131147     9.0S  110.0E 4.0-5.5 BAAAA  So. of Java                

 

O: 11FEB2021 13:35:01  13.6N  120.9E mb=4.8  EMSC   MINDORO, PHILIPPINES         

P: 11FEB2021 131169    12.0N  121.0E 3.5-4.9 ABAAA  Luzon, Philippines         

 

O: 11FEB2021 21:12:36  18.8N  121.8E ML=4.0  EMSC   LUZON, PHILIPPINES           

P: 10FEB2021 130869    18.0N  120.0E 3.5-4.9 AABAA  Luzon, Philippines         

P: 14FEB2021 131171    18.0N  120.0E 3.5-4.8 BABAA  Luzon, Philippines         

 

O: 12FEB2021 03:37:34  19.1N  121.3E mb=4.9  EMSC   BABUYAN ISL REGION, PHILIPPINE

P: 14FEB2021 131200    20.0N  121.0E 4.0-5.6 AAAAA  Taiwan                     

 

 

CENTRAL AND SOUTH AMERICA

 

O: 12FEB2021 01:57:26   6.9N   73.0W mb=4.5  EMSC   NORTHERN COLOMBIA            

P: 16FEB2021 131117     5.0N   76.0W 4.0-5.4 BBCAA  Colombia                   

 

O: 11FEB2021 10:36:14  14.1N   94.2W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 12FEB2021 01:34:16  14.3N   93.3W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO

P: 13FEB2021 131160    15.0N   95.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

 

O: 11FEB2021 23:14:59  14.4N   91.6W mb=4.3  EMSC   GUATEMALA                    

P: 14FEB2021 131163    15.0N   91.0W 3.5-5.3 BAAAA  Guatemala                  

 

NEIC reported this earthquake of M 4.3 in Sacatepequez, Guatemala was felt with intensity II-III in the area(s) of Sacatepequez, Guatemala at Antigua and Santa Maria de Jesus.

 

O: 12FEB2021 01:01:29  15.0N   61.2W mb=4.4  EMSC   MARTINIQUE REGION, WINDWARD IS

P:  3FEB2021 130865    15.0N   60.0W 3.0-5.0 CAAAA  Leeward Islands            

P: 13FEB2021 131166    18.0N   61.0W 3.0-5.5 ACAAA  Leeward Islands            

 

O: 11FEB2021 07:07:20  15.5N   94.8W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO

O: 11FEB2021 19:44:15  15.8N   95.1W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO

O: 12FEB2021 02:21:00  16.5N   94.3W ML=4.0  EMSC   OAXACA, MEXICO

O: 12FEB2021 06:50:49  15.3N   94.6W ML=4.3  EMSC   OFF COAST OF OAXACA, MEXICO  

P: 13FEB2021 131160    15.0N   95.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

 

O: 11FEB2021 13:20:47  16.6N   95.9W ML=4.2  EMSC   OAXACA, MEXICO               

P: 12FEB2021 131180    16.0N   96.0W 3.5-5.0 AAAAA  Oaxaca, Mexico             

 

O: 11FEB2021 20:48:47  17.9N   67.0W Md=3.0  EMSC   PUERTO RICO REGION           

P: 11FEB2021 131181    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 11FEB2021 07:43:17  19.1N   64.8W Md=3.6  EMSC   VIRGIN ISLANDS REGION        

O: 11FEB2021 07:43:17  19.1N   64.8W Md=4.0  ANSS   VIRGIN ISLANDS REGION        

P: 11FEB2021 131167    19.0N   65.0W 3.0-5.2 AAAAA  Leeward Islands            

 

NEIC reported these earthquakes of M 4.0 and 3.6 in the Virgin Islands were felt with intensity II-III in the area(s) of Frederiksted, Virgin Islands.

 

O: 12FEB2021 00:41:11  19.7N   70.6W ML=3.3  EMSC   DOMINICAN REPUBLIC

O: 11FEB2021 21:58:42  19.6N   70.2W ML=3.3  EMSC   DOMINICAN REPUBLIC           

P: 14FEB2021 131182    20.0N   71.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 11FEB2021 06:57:05  20.6N   72.0W ML=3.4  EMSC   DOMINICAN REPUBLIC REGION    

P: 14FEB2021 131182    20.0N   71.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 11FEB2021 16:35:45  24.2S   69.0W mb=4.1  EMSC   ANTOFAGASTA, CHILE           

P: 15FEB2021 131382    24.0S   66.0W 4.0-5.9 BACAA  Argentina                  

 

O: 11FEB2021 16:49:55  29.9S   71.4W mb=4.1  EMSC   OFFSHORE COQUIMBO, CHILE     

O: 11FEB2021 16:49     29.9S   71.3W mb=4.2  GUC    Coquimbo at La Serena and Paig

P: 12FEB2021 131403    30.0S   71.0W 4.0-5.7 AAAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity   IV in  Coquimbo at La Serena and Paiguano II in Andacollo, Chile.

 

O: 11FEB2021 14:01:26  39.8S   72.0W mb=4.6  EMSC   LOS LAGOS, CHILE             

O: 11FEB2021 14:51:44  39.8S   71.9W ML=4.2  EMSC   LOS LAGOS, CHILE

O: 11FEB2021 14:01     39.8S   72.0W mb=4.7  GUC    La Araucania at Cunco, Cuirarr

P: 12FEB2021 131401    39.0S   73.0W 4.0-5.3 AAAAA  Central Chile              

 

GUC reported this earthquake was felt with intensity IV in  La Araucania at Cunco, Cuirarrehue, Loncoche, Padre las Casas, Pucon, Temuco, Teodoro Schmidt, Vallarrica; II in Melipeuco, Saavedra, Vilcun; Los Rios with IV in Futrono, Lanco, Mariquina, Panguipulli, Rio Bueno and Valdivia and in Los Lagos with III in San Juan de la Costa, Chile.

NEIC reported this earthquake of M 4.6 in Los Lagos, Chile was felt with intensity IV in the area(s) of Panguipulli, Los Lagos; Villarrica, Araucania, Linares, Maule,  and Venado, Tuerto Santa Fe, Argentina and II-III in Argentina at Barioche Rio Negro and in Los Lagos Chile at Loncoche, Valdivia, Osorno, and Temuco, Araucania.

 

AFRICA AND EUROPE

 

O: 11FEB2021 07:56:14  63.9N   22.3W ML=3.0  EMSC   ICELAND REGION               

P: 12FEB2021 131352    63.0N   26.0W 3.0-4.4 AABAA  Iceland area               

 

O: 11FEB2021 23:22:21  34.7N   45.3E ML=3.6  EMSC   IRAN-IRAQ BORDER REGION      

O: 11FEB2021 22:10:43  34.8N   45.5E mb=4.9  EMSC   IRAN-IRAQ BORDER REGION

P: 10FEB2021 130933    36.0N   46.0E 3.8-5.4 ABAAA  No. Iran                   

P: 11FEB2021 131237    36.0N   46.0E 3.8-5.4 ABAAA  No. Iran                   

 

O: 11FEB2021 19:45:21  28.0N   16.2W ML=1.8  EMSC   CANARY ISLANDS, SPAIN REGION 

O: 11FEB2021 20:32:51  28.2N   16.2W ML=1.8  EMSC   CANARY ISLANDS, SPAIN REGION

 

O: 11FEB2021 19:23:33  37.9N   26.7E ML=3.9  EMSC   DODECANESE ISLANDS, GREECE   

P: 10FEB2021 130904    37.0N   26.0E 3.0-4.7 AAAAA  Aegean Sea                 

 

O: 11FEB2021 07:36:25  40.7N   30.6E ML=3.7  EMSC   WESTERN TURKEY               

P:  9FEB2021 131005    41.0N   29.0E 3.0-5.1 AAAAA  Romania/NW Turkey          

 

EMSC reported this earthquake of M 3.8 in Western Turkey  was felt with intensity II-III in the area(s) of  Turkey at Candarli, Aliaga, Yenisakran, Menemen, Bergama, Karsivaka among others.

 

O: 12FEB2021 03:37:55  41.4N   33.5E mb=4.7  EMSC   CENTRAL TURKEY               

P: 11FEB2021 131299    41.0N   33.0E 3.5-5.1 AAAAA  No. Turkey/Black Sea       

 

O: 11FEB2021 13:48:07  38.9N   26.8E ML=3.5  EMSC   NEAR THE COAST OF WESTERN TURKEY

O: 11FEB2021 08:45:29  38.9N   26.8E ML=3.8  EMSC   NEAR THE COAST OF WESTERN TURK

P: 12FEB2021 131206    38.0N   26.0E 3.0-4.5 AAAAA  Aegean Sea                 

 

SOUTHWEST PACIFIC

 

O: 12FEB2021 03:47:48  22.5S  171.2E Mw=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 11:46:08  22.6S  171.1E mb=4.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 16:43:55  22.6S  171.1E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 19:20:39  22.6S  171.5E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 12:44:25  22.7S  171.2E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 20:05:53  22.7S  171.3E Mw=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 21:16:03  22.7S  171.4E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 16:52:35  22.8S  171.7E Mw=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 22:02:38  22.8S  171.6E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 07:23:05  22.9S  171.8E mb=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 08:22:10  22.9S  171.2E Mw=5.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 14:55:18  22.9S  171.8E Mw=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 07:18:40  23.0S  172.0E Mw=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 06:52:32  23.1S  171.6E Mw=6.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 11:19:26  23.1S  172.0E mb=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 16:13:54  23.1S  172.1E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 12:16:38  23.2S  171.9E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 07:56:04  23.3S  171.7E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 08:39:13  23.3S  171.7E Mw=5.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 17:21:08  23.3S  171.5E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 18:05:00  23.4S  171.8E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 04:06:05  23.4S  171.6E Mw=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 19:02:39  23.5S  171.9E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 12FEB2021 01:01:29  22.4S  171.3E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 11FEB2021 131386    23.0S  172.0E 4.0-5.5 AAAAA  Loyalty Islands            

P: 14FEB2021 131386    22.0S  172.0E 4.0-5.3 AAAAA  Loyalty Islands            

 

OCEAN RIDGES

 

O: 12FEB2021 06:46:58  61.8S   55.9W mb=4.9  EMSC   SOUTH SHETLAND ISLANDS       

P: 14FEB2021 131436    61.0S   56.0W 4.0-5.4 AAAAA  Southern  Ocean            

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 12FEB2021 03:28:09  32.8S  179.6E mb=4.5  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 17FEB2021 131417    32.0S  178.0E 4.0-5.3 BAAAA  So. Kermadec Islands       

 

O: 12FEB2021 00:54:29  34.6S  179.2E ML=3.8  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 17FEB2021 131407    35.0S  179.0E 3.0-4.6 BAAAA  North Island, N.Z.         

 

O: 12FEB2021 03:54:10  40.1S  174.1E mb=4.5  EMSC   COOK STRAIT, NEW ZEALAND     

O: 12FEB2021 03:54:11  40.2S  174.1E ML=4.9  GEONET Felt with moderate intensity

P: 14FEB2021 131422    40.0S  174.0E 3.0-4.6 AAAAA  North Island, N.Z.         

 

GEONET reported this earthquake was felt with moderate intensity in Cook Strait and northern South Island. 5370 people reported feeling this event; 3460 with weak intensity; 1769 with light shaking; 126 moderate; 9 strong; 3 with severe and 3 with extreme shaking.

 

JAPAN AND KURIL ISLANDS

 

O: 12FEB2021 04:52:25  30.2N  131.1E mb=4.9  EMSC   KYUSHU, JAPAN                

P:  8FEB2021 130924    30.0N  131.0E 3.5-4.9 BAAAA  Kyushu, Japan area         

 

O: 12FEB2021 02:15:11  32.7N  138.2E mb=4.2  EMSC   IZU ISLANDS, JAPAN REGION

O: 11FEB2021 16:45:25  31.3N  138.1E mb=4.1  EMSC   IZU ISLANDS, JAPAN REGION    

P: 10FEB2021 130917    33.0N  138.0E 3.5-4.9 AAAAA  Central/So. Honshu Japan   

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 12FEB2021 05:51:19  36.6N  121.2W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P: 13FEB2021 131215    36.8N  121.3W 2.5-5.1 AAAAA  Central California         

 

O: 12FEB2021 05:38:12  38.2N  118.1W ML=2.2  EMSC   NEVADA                       

P: 14FEB2021 131209    38.0N  118.8W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 12FEB2021 02:22:15  39.4N  122.9W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  9FEB2021 130914    39.0N  123.1W 2.5-4.7 BAAAA  Central California         

 

O: 11FEB2021 17:20:19  40.3N  122.1W Md=2.8  EMSC   NORTHERN CALIFORNIA          

P: 11FEB2021 131301    40.6N  122.4W 2.5-4.3 AAAAA  Northern California        

 

O: 11FEB2021 23:29:47  41.2N  127.5W ML=3.1  EMSC   OFF COAST OF NORTHERN CALIFORN

P: 12FEB2021 131302    40.3N  127.2W 2.5-4.4 AAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O: 11FEB2021 20:08:51  58.6N  153.5W mb=4.4  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 13FEB2021 131345    60.0N  153.5W 3.2-5.3 ABAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 11FEB2021 06:44:41  43.6N  128.1W ML=2.9  EMSC   OFF COAST OF OREGON          

P:  9FEB2021 131000    44.1N  128.8W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

O: 10FEB2021 21:18:42  64.8N  133.7W MB=4.9  ECAN Keno, YT                       

P:  8FEB2021 131052    64.0N  131.0W 2.5-4.3 AAAAA  Yukon Territory, Canada    

 

ROCKY MOUNTAINS REGION

 

O: 11FEB2021 11:04:50  33.0N  100.9W mb=2.9  EMSC   WESTERN TEXAS                

P: 12FEB2021 131245    32.6N  101.6W 2.0-4.3 AAAAA  SW U.S.A                   

 

O: 12FEB2021 01:10:57  44.4N  114.7W ML=2.5  EMSC   SOUTHERN IDAHO               

P: 15FEB2021 131291    44.5N  115.3W 2.0-4.1 BAAAA  Montana/Idaho              

P: 16FEB2021 131292    44.9N  113.4W 2.0-4.4 BAAAA  Montana/Idaho              

 

This earthquake is

O: 11FEB2021 21:39:45  47.4N  113.1W Ml=2.2  EMSC   WESTERN MONTANA              

P: 11FEB2021 131293    48.0N  115.0W 2.0-4.3 AABAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 11FEB2021 12:15:17  34.4N   97.4W ML=2.2  EMSC   OKLAHOMA

O: 11FEB2021 17:15:46  34.4N   97.4W ML=2.3  EMSC   OKLAHOMA

O: 12FEB2021 02:14:32  34.4N   97.4W ML=2.2  EMSC   OKLAHOMA

O: 11FEB2021 10:10:16  34.4N   97.4W ML=2.0  EMSC   OKLAHOMA                     

P: 12FEB2021 131263    35.0N   96.0W 2.0-4.0 AAAAA  Southern Plains             

P: 15FEB2021 131264    35.0N   97.0W 2.0-4.0 BAAAA  Southern Plains            

 

O: 11FEB2021 11:34:30  35.5N   91.8W Md=2.3  EMSC   ARKANSAS                     

P:  7FEB2021 130960    35.0N   92.0W 2.0-3.8 BAAAA  Southeast U.S.              

 

O: 12FEB2021 03:54:52  37.2N   81.8W mb=2.9  EMSC   VIRGINIA                     

P: 16FEB2021 131228    37.2N   81.9W 2.0-4.1 BAAAA  Kentucky/Tennessee/NC      

 

O: 11FEB2021 04:14:56  72.4N   76.1W MB=2.6  ECAN Pond Inlet, NU                 

P: 13FEB2021 131360    73.3N   73.5W 2.5-3.9 AAAAA  Baffin/Davis Strait Canada 

 

O: 10FEB2021 17:48:02  43.8N   66.5W MB=2.4  ECAN Yarmouth, NS. Felt             

P:  3FEB2021 130982    44.4N   68.2W 2.0-3.9 CAAAA  Maine                      

 

O: 10FEB2021 11:42:13  48.9N   69.1W MB=1.9  ECAN Betsiamites, QC                

P:  7FEB2021 130982    47.3N   70.5W 2.0-3.9 BBAAA  Maine                      

 

O: 10FEB2021 10:13:57  58.6N   66.2W MB=2.0  ECAN Kangiqsualujjuaq, QC           

 

HAWAII

 

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

 

MAJOR QUAKE STRIKES LOYALTY ISLANDS; FFA LIKELY

 

EARTHQUAKE SUMMARY FOR FEBRUARY 10, 2021

 

A major quake of M 7.7 was preceded by a series of strong foreshocks and followed by a number of large aftershocks today. NEIC reported the mainshock was felt with intensity VII in Mont-Dore and V in Vao Sud, New Caledonia and in Shefa, Vanuatu with III. The mainshock of M 7.7 is the strongest earthquake in the Loyalty Islands within about 300 km of this epicenter since an M 7.7 on May 16, 1995. No larger events have hit the region in historical times (more than 100 years).  This is also the strongest earthquake in the world since events of M 7.7-7.8 west of Cuba on January 28, 2020 and the Alaska Peninsula on July 22, 2020. The last earthquake in the world of larger magnitude was an M 8.0 on May 26, 2019.

 

This activity occurred at a time when a number of stresses were enhancing seismicity in the region. These included the new moon tides, a strong Gamma Ray Burst (GRB),  the strongest solar flare since mid-January, a series of Tropical Cyclones and generally increased regional seismicity.

 

Today's activity in the Loyalty Islands was likely promoted by strong tidal stresses associated with the new moon as noted in this summary in previous issues:

 

"The new moon will arrive at 19:06 on February 11, 2021. Longitudes which are at local solar noon at this time are near 105W and 75E. In the west these include western North America and portions of the East Pacific Rise and in the east portions of the central Indian Ocean and Central Asia near Hindu Kush and Afghanistan among others. These areas are most likely to see tidal triggering in the next week. A large earthquake is possible in this time and tidal triggering is not limited to these regions." (February 8-10, 2021)

 

This activity began with an M 6.0 at 12:24 UT in the Loyalty Islands on February 10. This is within about 10 minutes of local solar midnight, a time when tidal stresses are maximized. The major aftershocks of this event occurred within

 the next hour and were also probably enhanced by tidal stresses.

 

Another factor contributing to today's activity was a pair of recent Tropical Cyclones which passed over these epicenter. When this series of earthquakes in the Loyalty Islands began on February 2, 2021, this summary had noted this as:

 

 

Moderate earthquake occur on a daily basis around the world. Likewise, tropical cyclones are not uncommon. It is when these events intersect that the geophysics gets interesting. Such was the case today. In the previous issue of this report it was noted:

 

"As noted in previous issues of this summary several tropical cyclones are currently in the area of Samoa, Vanuatu and the Loyalty Islands. This is an area where strong cyclones can and often do, trigger moderate seismicity. Although this area did not see any moderate events today, watch for some in the next several days." (February 1-2, 2021)

 

"Tropical cyclone Lucas (17P) continued in the region of Southern Vanuatu with winds up to 50 kts. It is expected to track to the south over the next week reaching the Loyalty Islands and southern Vanuatu around February 1-2. Some seismic enhancement may occur in Vanuatu while this storm is in the area." (February 1, 2021)

 

and

 

"Tropical Cyclone Bima (16P) continued west of Samoa today with winds up to 50 kts. It is expected to track to the east over the next several days reaching Samoa around February 1-2. Some regional seismicity in Samoa and Tonga may be enhanced while this storm is in the area." (February 1, 2021)

 

Today a series of moderately large earthquakes hit the Loyalty Islands as Tropical Cyclone Lucas passed over these epicenter and in Fiji as Tropical Cyclone Bima passed over that epicenter. These earthquakes were almost certainly triggered by stresses from these tropical cyclones.

 

The center of TC Lucas had been placed on February 3 in the Loyalty Islands at:

 

TC    LUCAS    2021-02-03  00:00 UT  21.9S  168.1E   50 kts  Loyalty Islands

 

The earthquakes in the area southeast of the Loyalty Islands occurred within an hour either side of local solar noon, a time for maximum tidal and geomagnetic triggering. This area is near the geomagnetic equator. The combination of these stresses and the passing of TC Lucas through the area at this time probably triggered today's activity. The last earthquakes of M>=5.7 within about 250 km of today's activity occurred on January 8, 2021 to the northeast and prior to that on September 6, 2019 with M 6.1 and 5.9 respectively. Forecast 131080 had expected this activity was likely around February 3-6, 2021. This activity is at 145 degrees from the Dodecanese M 7.0 of October 30, 2020; the seventh node (51.4 degrees) from the M 7.0 in Mindanao, Philippines of January 21, 2021 and may have been promoted by energy from this source." (February 3, 2021)

 

A new tropical storm passed to the east of today's activity in the Loyalty Islands over the past two days as noted in previous summaries and probably contributed additional stress reaching the rupture limit of the major earthquake today as noted in previous issues:

 

"A tropical cyclone may be forming in the area of Tonga. This system is currently located at 21S 178W in Tonga and moving SSE with winds up to 30 kts. Regional seismicity is expected to be enhanced while this storm is in the area." (February 8, 2021)

 

and

 

"Tropical cyclone 20P  formed in the area of Tonga today with winds up to 50 kts. This system is moving SSE with winds up to 50 kts. Regional seismicity is expected to be enhanced while this storm is in the Tonga/Kermadec region." (February 10, 2021)

 

Effects from a major Gamma Ray Burst near local solar noon in the Loyalty Islands earlier in the day may also have affected the timing of today's activity. The preliminary parameters of this GRB are in this summary as:

 

"The last major Gamma Ray Burst (GRB) according to the online NASA Swift GRB Catalog was observed on February 10, 2021 at 02:00 UT with BAT Fluence  n/a erg/cm2 (MAGNITUDE: >16.9), Associated earthquake: Loyalty Islands, M 7.7 ...)" (February 11, 2021)

 

A moderate solar flare also occurred at the time of the main activity in the Loyalty Islands with the following parameters. This flare began within about  15 minutes of local solar midnight, a time for maximum Solar Flare Effects (SFE) on seismicity. It is the largest recorded flare since a C1.4 on January 20, 2021 and among the largest of the current year. It may have helped contribute to the magnitude of this activity:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

#-------------------------------------------------------------------------------

 

 

6170       1142   1206      1217   B5.7      (February 10, 2021)   6.3E-04      

 

Far field triggering from the activity in the Loyalty Islands is expected to be robust. This is due, not only to the great size of the mainshock but also to the regions which are near 103 degrees from this epicenter. Areas at 103 degrees from the Loyalty Islands include western Canada, Oklahoma in the U.S. Oaxaca, Chiapas, Mexico, Guatemala, Panama, Ecuador, Peru, Chile in South America, India, China, Afghanistan in Asia. Areas at 144 degrees from the Loyalty Islands include Turkey, Eastern Europe and Central Africa. These area may see enhanced seismicity in coming days. Other areas subject to seismic promotion include Iran and the northern Caribbean (120 degrees node 3); Southern and Central California, Vancouver, southern Alaska, Myanmar, Mongolia (node 4, 90 degrees); East Pacific Rise, Sumatra, Taiwan, Hokkaido (node 5, 72 degrees); Izu Islands, Philippines, (node 6, 60 degrees) and Banda, Guam, New Guinea (node 5, 51 degrees) among others. Earthquakes today at the fifth node included an M 6.2 in Sumatra and an M 5.6 in the East Pacific Rise.

 

At least 50 moderate sized shocks were associated as foreshocks or aftershocks within the first day. This included strong events of M 6.2, 6.0, 6.5, 6.0, 6.0 and several of M 5.9. Forecasts 130088 130385 and 131384 had expected today's activity in early February.

 

O: 11FEB2021 04:58:51  22.4S  170.9E mb=4.8  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 12:32:10  22.6S  171.6E Mw=5.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 13:57:18  22.6S  171.5E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 18:36:42  22.6S  171.3E Mw=6.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 14:18:20  22.7S  171.8E mb=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 14:37:22  22.7S  171.5E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 14:59:39  22.7S  172.1E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 15:44:30  22.7S  171.5E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 16:53:54  22.7S  171.6E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 19:56:15  22.7S  171.4E Mw=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 22:38:09  22.7S  171.4E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 01:24:42  22.7S  171.6E mb=5.4  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 04:15:16  22.7S  171.0E Mw=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 12:24:21  22.8S  171.7E Mw=6.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 13:01:59  22.8S  171.6E Mw=6.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 14:30:25  22.8S  172.1E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 16:52:20  22.8S  171.6E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 17:00:50  22.8S  171.3E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 17:25:54  22.8S  171.6E mb=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 20:45:20  22.8S  171.2E Mw=5.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:57:14  22.8S  171.3E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 23:32:46  22.8S  171.8E Mw=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 17:30:23  22.9S  179.8W mb=4.8  EMSC   SOUTH OF FIJI ISLANDS

O: 11FEB2021 00:13:20  22.9S  171.3E mb=4.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:17:50  23.0S  171.5E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:17:50  23.0S  171.5E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 20:10:35  23.1S  171.8E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 22:54:20  23.1S  171.7E mb=5.4  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 23:45:19  23.1S  171.6E Mw=5.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 00:14:47  23.1S  171.8E Mw=5.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 06:52:32  23.1S  171.6E Mw=6.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 19:13:58  23.2S  171.9E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:24:01  23.2S  171.6E Mw=6.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:40:34  23.2S  171.6E mb=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 22:03:43  23.2S  171.6E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 23:26:31  23.2S  171.9E Mw=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 23:43:21  23.2S  171.7E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 01:02:04  23.2S  171.7E Mw=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 02:24:20  23.2S  171.7E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 13:19:59  23.3S  171.5E Mw=7.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 17:24:35  23.3S  171.5E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 20:41:39  23.3S  171.8E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 19:00:18  23.5S  171.7E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:36:03  23.5S  171.6E mb=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:50:04  23.5S  171.7E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 14:50:02  22.4S  170.9E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P:  1FEB2021 131088    20.0S  169.0E 4.0-5.3 CCBAA  Vanuatu Islands            

P: 11FEB2021 131386    23.0S  172.0E 4.0-5.5 AAAAA  Loyalty Islands            

P: 12FEB2021 131385    21.0S  170.0E 4.0-5.3 ABAAA  Loyalty Islands            

 

Several large earthquakes south of Sumatra followed the M 7.7 in the Loyalty

Islands and may have promoted by energy from that event. The strongest of these - an M 6.2 - followed the first of the Loyalty Islands shocks 28 minutes later at a distance of 71 degrees (node 5). S- waves and surface waves from the Sumatra event would have been present in Sumatra at the time of the follow=up M 6.0 there and may have helped trigger it. A series of moderate foreshocks and aftershocks occurred with the M 6.2 mainshock. The M 6.2 is the strongest earthquake in the region southwest of Sumatra within about 200 km since an M 6.8-6.9 on August 18, 2020 and prior to that an M 6.9 on August 2, 2019 and an M 6.4 on August 13, 2017. Forecasts 130847 and 131149 had expected today's activity was likely around February 6-11.

 

O: 10FEB2021 10:21:34   5.6S  101.8E mb=5.1  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 12:52:28   5.6S  101.7E Mw=6.2  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 10:15:37   5.7S  101.7E mb=5.1  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 13:10:47   5.8S  101.9E ML=4.4  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 13:17:38   5.8S  101.7E ML=4.2  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 13:06:14   5.4S  102.6E ML=4.2  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  6FEB2021 130847     3.0S  103.0E 4.0-5.6 BCAAA  So. of Java                

P: 11FEB2021 131149     6.0S  102.0E 4.0-5.4 AAAAA  So. of Sumatera            

 

The largest earthquake in the U.S. or Canada today was an M 4.2-4.9 in the Yukon Territory, Canada. It was not reported felt widely in the epicentral area. The timing of this event within about 15 minutes of local solar noon suggests that tidal triggering was likely a promotional cause for this earthquake triggering. The last earthquake within about 200 km of this epicenter in Canada with equal or larger magnitude was an M 5.0 on December 22, 2017 and prior to that an M 5.1 on September 24, 2005. Forecasts 131052 and 131357 had expected this activity in this region was likely around February 8-16. This epicenter is at 104 degrees from the M 6.7 in the West Chile Rise of February 3 and may have been promoted by concentrated energy from that source.

 

O: 10FEB2021 21:18:49  64.5N  135.0W MB=4.7  ECAN OF ELSA, YT   

O: 10FEB2021 21:18:42  64.8N  133.7W MB=4.9  ECAN Keno, YT    

O: 10FEB2021 21:18:42  64.9N  133.7W Mw=4.2  EMSC   SOUTHERN YUKON TERRITORY, CANA

P:  8FEB2021 131052    64.0N  131.0W 2.5-4.3 AAAAA  Yukon Territory, Canada    

P: 16FEB2021 131357    65.0N  134.0W 2.5-3.9 CAAAA  Yukon Territory, Canada    

 

The strongest earthquake in the western hemisphere today was an M 5.6 in the Central East Pacific Rise. It was not reported felt in this remote epicentral area. This is the largest earthquake within about 300 km of this epicenter since an M 5.9 on July 7, 2015 and a similar M 5.7 on August 13, 2008. There have been no earthquakes of M>=6.0 in the area in the past 30 years.  The earthquake occurred within about an hour of local solar midnight and may have been promoted by strong tidal stresses associated with the new moon. Like the M 6.2 in Sumatra, this epicenter is located near the fifth node (72 degrees) from the Loyalty Islands.

 

O: 10FEB2021 08:22:31  13.6S  111.6W Mw=5.6  EMSC   CENTRAL EAST PACIFIC RISE    

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: 10FEB2021 14:43:43  27.1N   89.6E mb=3.7  EMSC   BHUTAN                       

P:  6FEB2021 130896    27.0N   88.0E 3.5-5.4 BABAA  Nepal                      

 

NEIC reported this earthquake of M 3.7 in Bhutan was felt with intensity II-III in the area(s) of Bhutan at Phuentsholing and Thimphu and in Sikkim, India.

 

O: 10FEB2021 22:31:14  38.0N   70.0E mb=4.6  EMSC   TAJIKISTAN                   

P: 13FEB2021 131226    39.0N   72.0E 3.8-5.3 BABAA  Hindu Kush/Pakistan        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 10FEB2021 10:03:12   4.9N  127.4E mb=5.1  EMSC   KEPULAUAN TALAUD, INDONESIA  

P:  7FEB2021 130823     5.0N  128.0E 4.0-5.4 BAAAA  Halmahera                  

 

O: 10FEB2021 10:21:34   5.6S  101.8E mb=5.1  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 10:21:34   5.6S  101.8E mb=5.1  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 12:52:28   5.6S  101.7E Mw=6.2  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 10:15:37   5.7S  101.7E mb=5.1  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 13:10:47   5.8S  101.9E ML=4.4  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 13:17:38   5.8S  101.7E ML=4.2  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

O: 10FEB2021 13:06:14   5.4S  102.6E ML=4.2  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  6FEB2021 130847     3.0S  103.0E 4.0-5.6 BCAAA  So. of Java                

P: 11FEB2021 131149     6.0S  102.0E 4.0-5.4 AAAAA  So. of Sumatera            

 

CENTRAL AND SOUTH AMERICA

 

O: 10FEB2021 20:18     31.8S   71.3W mb=5.2  GUC    Coquimbo at Illapel, IV Canela

P:  8FEB2021 131090    32.0S   68.0W 4.0-5.6 AACAA  Central Chile              

P:  8FEB2021 131094    30.0S   72.0W 4.0-5.6 ABAAA  Coast Central Chile        

 

GUC reported this earthquake of intensity  V was felt in    Coquimbo at Illapel, IV Canela, Combarbala, Los Vilos, Mone Patria, Punitaqui, Rio Hurtado, Salamanca, Vicuna; III Andacollo, Coquimbo, La Higuera, La Serena, Ovalle, Valparaiso with IV in Quintero, San Felipe, Santa Maria, Vina del Mar; III in Los Andes, Quilpue, San Antonio and Valparaiso and in Santiago with III at Colina, El Bosque, El Monte, Maipu, Pedro Aguirre Cerda, Penalolen, Puente Alto, Quilicura; II in Isla de Maipo, La Florida, "Lo Barnechea, San Jose de Maipo and Santiago, Chile.

NEIC reported this earthquake of M 5.2 in Valparaiso, Chile was felt with intensity V in the area(s) of Valparaiso, Chile at Vina del Mar,  Quilpue, and Villa Alemana; IV in Valparaiso and Quillota and II-III in San Felipe and La Ligua and Calera and in Coquimbo at Illapel, and Ovalle.

 

O: 10FEB2021 22:04:51  11.7N   86.0W mb=4.4  EMSC   NEAR COAST OF NICARAGUA      

O: 11FEB2021 02:40:50  11.7N   87.0W mb=4.8  EMSC   NEAR COAST OF NICARAGUA

P:  3FEB2021 130874    12.0N   86.0W 3.5-5.6 CAAAA  Nicaragua                  

P: 10FEB2021 130821     9.0N   86.0W 3.5-5.2 ACAAA  Costa Rica                 

 

O: 10FEB2021 08:42:09  12.9N   88.9W mb=4.4  EMSC   OFFSHORE EL SALVADOR

O: 10FEB2021 08:47:37  13.0N   88.7W mb=5.0  EMSC   OFFSHORE EL SALVADOR

O: 10FEB2021 23:15:02  13.0N   89.3W ML=4.1  EMSC   OFFSHORE EL SALVADOR         

P:  6FEB2021 130861    13.0N   89.0W 3.5-5.4 BAAAA  Coast of Central America   

 

NEIC reported this earthquake of M 5.0 in El Salvador was felt with intensity IV in the area(s) of El Salvador at Ilopango, Antigua Cuscatlan, Nueva San Salvador, Neuvo Cuscatlan and II-III in San Salvador and La Libertad. A foreshock of M 4.4 was felt in a similar area.

 

O: 10FEB2021 22:01:09  16.5N  100.4W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  7FEB2021 130877    16.0N   99.0W 3.5-5.3 BAAAA  Oaxaca, Mexico             

 

O: 11FEB2021 02:58:21  18.2N  100.9W ML=4.0  EMSC   GUERRERO, MEXICO             

P:  4FEB2021 130871    18.0N  101.0W 3.5-5.1 CAAAA  Michoacan, Mexico          

 

O: 10FEB2021 16:47:09  19.1N   69.9W ML=3.4  EMSC   DOMINICAN REPUBLIC           

P:  8FEB2021 130886    20.0N   69.0W 3.0-4.8 AAAAA  Bahamas/No. Caribbean      

 

O: 11FEB2021 04:36:57  19.2N   65.2W ML=3.3  EMSC   PUERTO RICO REGION           

P: 10FEB2021 130885    20.0N   65.0W 3.0-4.4 AAAAA  Bahamas/No. Caribbean      

 

O: 10FEB2021 22:24:02  19.3N  104.4W ML=4.0  EMSC   COLIMA, MEXICO               

P:  7FEB2021 130872    19.0N  104.0W 3.5-5.4 BAAAA  Michoacan, Mexico          

 

O: 10FEB2021 22:21:09  19.5S   71.2W mb=4.4  EMSC   OFF COAST OF TARAPACA, CHILE 

P:  9FEB2021 131084    20.0S   70.0W 4.0-5.4 AAAAA  So. Peru/Bolivia           

 

O: 10FEB2021 22:09:41  24.2S   67.1W mb=4.1  EMSC   SALTA, ARGENTINA             

P:  2FEB2021 131077    24.0S   67.0W 4.0-6.0 CAAAA  Argentina                  

 

O: 10FEB2021 17:09:56  28.4S   67.2W mb=4.3  EMSC   LA RIOJA, ARGENTINA          

P:  7FEB2021 131078    28.0S   67.0W 4.0-5.6 BAAAA  Argentina                  

 

O: 10FEB2021 20:45:58  28.6N  108.7W ML=4.0  EMSC   SONORA, MEXICO               

P:  8FEB2021 130888    28.0N  112.0W 3.5-5.2 AACAA  Gulf of California         

 

O: 10FEB2021 20:18:29  31.7S   71.2W mb=5.2  EMSC   COQUIMBO, CHILE              

P: 11FEB2021 131397    31.0S   72.0W 4.0-5.9 AAAAA  Central Chile              

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O: 11FEB2021 01:24:08  20.7S  167.3E mb=5.0  EMSC   LOYALTY ISLANDS              

P:  3FEB2021 131080    21.0S  169.0E 4.0-5.4 CABAA  Loyalty Islands            

P: 11FEB2021 131381    19.0S  170.0E 4.0-5.3 ABBAA  Vanuatu Islands            

 

O: 10FEB2021 17:53:00  23.5S  179.7W mb=4.9  EMSC   SOUTH OF FIJI ISLANDS        

P:  6FEB2021 131086    25.0S  179.0W 4.0-5.8 BBAAA  Tonga Islands              

 

O: 11FEB2021 04:58:51  22.4S  170.9E mb=4.8  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 12:32:10  22.6S  171.6E Mw=5.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 13:57:18  22.6S  171.5E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 18:36:42  22.6S  171.3E Mw=6.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 14:18:20  22.7S  171.8E mb=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 14:37:22  22.7S  171.5E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 14:59:39  22.7S  172.1E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 15:44:30  22.7S  171.5E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 16:53:54  22.7S  171.6E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 19:56:15  22.7S  171.4E Mw=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 22:38:09  22.7S  171.4E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 01:24:42  22.7S  171.6E mb=5.4  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 04:15:16  22.7S  171.0E Mw=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 12:24:21  22.8S  171.7E Mw=6.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 13:01:59  22.8S  171.6E Mw=6.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 14:30:25  22.8S  172.1E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 16:52:20  22.8S  171.6E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 17:00:50  22.8S  171.3E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 17:25:54  22.8S  171.6E mb=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 20:45:20  22.8S  171.2E Mw=5.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:57:14  22.8S  171.3E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 23:32:46  22.8S  171.8E Mw=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 17:30:23  22.9S  179.8W mb=4.8  EMSC   SOUTH OF FIJI ISLANDS

O: 11FEB2021 00:13:20  22.9S  171.3E mb=4.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:17:50  23.0S  171.5E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:17:50  23.0S  171.5E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 20:10:35  23.1S  171.8E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 22:54:20  23.1S  171.7E mb=5.4  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 23:45:19  23.1S  171.6E Mw=5.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 00:14:47  23.1S  171.8E Mw=5.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 06:52:32  23.1S  171.6E Mw=6.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 19:13:58  23.2S  171.9E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:24:01  23.2S  171.6E Mw=6.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:40:34  23.2S  171.6E mb=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 22:03:43  23.2S  171.6E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 23:26:31  23.2S  171.9E Mw=5.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 23:43:21  23.2S  171.7E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 01:02:04  23.2S  171.7E Mw=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 11FEB2021 02:24:20  23.2S  171.7E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 13:19:59  23.3S  171.5E Mw=7.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 17:24:35  23.3S  171.5E mb=5.2  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 20:41:39  23.3S  171.8E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 19:00:18  23.5S  171.7E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:36:03  23.5S  171.6E mb=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 21:50:04  23.5S  171.7E mb=5.3  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 10FEB2021 14:50:02  22.4S  170.9E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P:  1FEB2021 131088    20.0S  169.0E 4.0-5.3 CCBAA  Vanuatu Islands            

P: 11FEB2021 131386    23.0S  172.0E 4.0-5.5 AAAAA  Loyalty Islands            

P: 12FEB2021 131385    21.0S  170.0E 4.0-5.3 ABAAA  Loyalty Islands            

 

OCEAN RIDGES

 

O: 10FEB2021 08:22:31  13.6S  111.6W Mw=5.6  EMSC   CENTRAL EAST PACIFIC RISE    

 

O: 10FEB2021 15:13:11  41.6S   84.3W mb=4.4  EMSC   WEST CHILE RISE              

P:  8FEB2021 131101    41.0S   88.0W 4.0-5.8 AACAA  Chile Rise                 

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 10FEB2021 14:38:20  26.7S  170.5E ML=3.8  EMSC   NORFOLK ISLAND, AUSTRALIA REGI

P:  6FEB2021 131080    23.0S  169.0E 4.0-5.4 BCAAA  Loyalty Islands            

P: 11FEB2021 131386    23.0S  172.0E 4.0-5.5 AAAAA  Loyalty Islands            

 

O: 11FEB2021 00:17:56  36.6S  175.4E ML=3.8  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 11FEB2021 131408    37.0S  178.0E 3.0-4.3 AABAA  North Island, N.Z.         

 

O: 10FEB2021 18:21:28  39.0S  175.0E ML=3.6  EMSC   NORTH ISLAND OF NEW ZEALAND  

P:  7FEB2021 131097    39.0S  175.0E 3.0-4.6 BAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 10FEB2021 19:36:30  26.5N  126.5E ML=4.0  EMSC   RYUKYU ISLANDS, JAPAN        

P:  5FEB2021 130898    26.0N  128.0E 4.0-5.4 BAAAA  Ryukyu Islands             

 

O: 10FEB2021 15:24:09  31.3N  139.9E mb=4.5  EMSC   IZU ISLANDS, JAPAN REGION    

P:  8FEB2021 130938    30.0N  141.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 10FEB2021 07:55:23  32.7N  115.8W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 19:40:06  32.8N  115.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 07:57:14  33.2N  115.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 08:00:59  33.2N  115.7W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 08:46:34  32.2N  115.2W Ml=2.2  EMSC   BAJA CALIFORNIA, MEXICO      

P: 10FEB2021 130948    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

 

O: 11FEB2021 00:08:16  37.8N  116.8W ML=2.0  EMSC   NEVADA                       

P:  8FEB2021 130954    35.9N  117.7W 2.5-4.3 BBAAA  So. California             

 

O: 10FEB2021 10:04:07  38.1N  118.0W ml=2.5  EMSC   NEVADA                       

P:  7FEB2021 130907    37.9N  118.2W 2.5-4.5 BAAAA  California/Nevada area     

 

O: 10FEB2021 21:45:54  38.8N  122.8W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P: 11FEB2021 131217    38.9N  122.8W 2.5-4.7 AAAAA  Central California         

 

O: 11FEB2021 00:07:11  41.1N  117.4W ML=3.4  EMSC   NEVADA                       

O: 11FEB2021 00:07:11  41.1N  117.4W ML=3.7  ANSS   NEVADA                       

P:  6FEB2021 130972    40.0N  117.9W 2.5-4.5 BBAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.7 in Northern Nevada was felt with intensity II-III in the area(s) of Northern Nevada at Winnemucca.

 

ALASKA

 

O: 10FEB2021 08:00:34  55.9N  157.4W ml=3.5  EMSC   ALASKA PENINSULA             

P: 11FEB2021 131321    54.8N  158.7W 3.5-5.3 AAAAA  Alaska Peninsula           

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 10FEB2021 21:18:49  64.5N  135.0W MB=4.7  ECAN OF ELSA, YT   

O: 10FEB2021 21:18:42  64.8N  133.7W MB=4.9  ECAN Keno, YT    

O: 10FEB2021 21:18:42  64.9N  133.7W Mw=4.2  EMSC   SOUTHERN YUKON TERRITORY, CANA

P:  8FEB2021 131052    64.0N  131.0W 2.5-4.3 AAAAA  Yukon Territory, Canada    

P: 16FEB2021 131357    65.0N  134.0W 2.5-3.9 CAAAA  Yukon Territory, Canada    

 

ROCKY MOUNTAINS REGION

 

O: 10FEB2021 22:15:54  44.3N  115.2W Ml=2.6  EMSC   SOUTHERN IDAHO

O: 10FEB2021 09:19:32  44.3N  115.1W Ml=2.4  EMSC   SOUTHERN IDAHO               

P:  6FEB2021 130985    44.4N  115.2W 2.0-4.2 BAAAA  Montana/Idaho               

 

EASTERN U.S./CANADA

 

O: 10FEB2021 12:45:09  34.4N   97.4W ML=2.2  EMSC   OKLAHOMA                     

P:  8FEB2021 130962    35.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 10FEB2021 17:48:02  43.8N   66.5W MB=2.4  ECAN Yarmouth, NS. Felt             

P:  2FEB2021 130975    46.0N   66.0W 2.0-4.1 CCAAA  E. of Maine                

 

O:  9FEB2021 13:03:18  74.4N   91.2W MB=1.3  ECAN Resolute, NU                   

 

HAWAII

 

O: 10FEB2021 15:31:39  19.2N  155.5W ML=3.3  EMSC   ISLAND OF HAWAII, HAWAII     

P:  5FEB2021 130864    19.2N  155.2W 3.0-4.5 BAAAA  Hawaii                     

 

SWARM IN SOUTHERN CALIFORNIA

 

EARTHQUAKE SUMMARY FOR FEBRUARY 9, 2021

 

A series of earthquakes occurred today in Southern California. The largest of these was of M 3.8 and M 3.8 in the region of Calipatria, California and was felt with intensity II-III in Westmorland, Indian Wells, Palm Desert, La Mesa, Bonita and possibly Tucson, Arizona. This included at least 15 light earthquakes of M>=2. The M 3.8's are the strongest events in this series since an M 4.0 on January 4, 2021 and an M 3.9 on October 22, 2020. Forecast 130948 had expected today's activity was likely within about 25 km of this epicenter around February 10. This activity is at the fourth node from the recent series of moderate to strong earthquakes in the area south of the Loyalty Islands which included a series of moderately strong earthquakes of M 5.6, 5.7 and 5.7 on February 2-4. 2021. That swarm is continuing with an M 5.0 on February 7. This activity is located at the fifth node (72 degrees) from the M 6.7 in  the West Chile Rise of February 3, 2021 and at  101-102 degrees from the M 7.0 in the Dodecanese Islands of October 30, 2020 and may have been promoted by energy from  that source. An M 5.2 in the Banda Sea was also located at the distance from the Dodecanese Islands today.

 

O: 10FEB2021 05:14:33  33.0N  115.9W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 09FEB2021 11:51:25  33.1N  115.6W ML=2.9  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 03:45:05  33.1N  115.7W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:01:15  33.2N  115.6W Mw=3.6  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:01:15  33.2N  115.6W Mw=3.8  ANSS   SOUTHERN CALIFORNIA

O: 10FEB2021 01:03:55  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:05:54  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:05:54  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:20:30  33.2N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:25:07  33.2N  115.6W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:27:09  33.2N  115.6W Mw=3.6  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:27:09  33.2N  115.6W Mw=3.8  ANSS   SOUTHERN CALIFORNIA

O: 10FEB2021 01:45:43  33.2N  115.6W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 02:24:48  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 02:26:10  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 04:56:43  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 05:12:11  32.7N  115.8W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 10FEB2021 130948    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

 

The strongest earthquake in the U.S. or Canada today was an M 4.0 in western Texas near the New Mexico border. The only earthquake in the past year of greater magnitude within about 200 km of this epicenter was an M 5.0 on March 26, 2020. Today's event is probably an aftershock of that. Forecast 130944 had expected today's activity in western Texas was likely around February 8.

 

NEIC reported this earthquake of M 4.0 in Western Texas was felt with intensity II-III in the area(s) of Las Cruces, New Mexico.  This activity is located at 101-102 degrees from the M 7.1 in the South Shetland Islands of January 23, 2021 and may have been promoted by energy from that source.

 

O:  9FEB2021 09:21:13  31.7N  104.3W ML=4.0  EMSC   WESTERN TEXAS                

P:  8FEB2021 130944    32.5N  104.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

An earthquake of M 4.6-4.8 in western Turkey was followed by an aftershock of M 4.2 today. This is the strongest earthquake within about 150 km of this epicenter in Turkey since an M 5.0 on July 27, 2011. Forecasts 130965 and 130964 had expected this activity was likely in early February.

 

NEIC reported this earthquake of M 4.8 in Western Turkey was felt with intensity VIII in the area(s) of  Tuzlukou, Konya, Turkey and VI in Aksehir, Turkey.

 

O: 09FEB2021 15:53:57  38.6N   31.7E ML=4.2  EMSC   WESTERN TURKEY

O:  9FEB2021 15:51:54  38.6N   31.6E ML=4.6  EMSC   WESTERN TURKEY               

O:  9FEB2021 15:51:54  38.6N   31.6E ML=4.8  ANSS   WESTERN TURKEY                

P:  4FEB2021 130965    39.0N   33.0E 3.5-5.2 BABAA  Turkey                     

P:  5FEB2021 130964    38.0N   29.0E 3.5-5.2 BBBAA  Turkey                     

 

The strongest earthquake in the world today was an M 5.2 in the Izu Islands of  southeastern Japan. It was not reported felt in the area. The last earthquake in the Izu Islands with M>5.2 was an M 5.9 north of this on October 3, 2020. An M 5.8 also occurred in the Izu Islands south of today's epicenter on July 30, 2020. Forecast 130938 had expected today's activity was likely around February 8.

 

O:  9FEB2021 07:07:57  31.3N  140.7E Mw=5.2  EMSC   IZU ISLANDS, JAPAN REGION    

P:  8FEB2021 130938    30.0N  141.0E 4.0-5.4 ABAAA  Off East Coast Honshu      

 

An M 5.2 also occurred in the Banda Sea, Indonesia today. It was followed by aftershocks of M 4.5 and 4.6. This follows a series of event in the Banda Sea

of M 4.3-4.5 on February 6-7 but the last event of M>=5.2 in the area was an M 6.3 on November 1, 2020. Forecast 130854 had expected this activity in the Banda Sea in early February. Despite the strong geomagnetic activity over the past several days and high tides associated with the new moon this area and the Southwestern Pacific were relatively quiet today. Quiet conditions, when they are not expected, can signal strain accumulation which could be released in a strong to major event with the new moon. This summary had noted the possible seismic activity at the time of the new moon in the previous summary as:

 

"The new moon will arrive at 19:06 on February 11, 2021. Longitudes which are at local solar noon at this time are near 105W and 75E. In the west these include western North America and portions of the East Pacific Rise and in the east portions of the central Indian Ocean and Central Asia near Hindu Kush and Afghanistan among others. These areas are most likely to see tidal triggering in the next week. A large earthquake is possible in this time and tidal triggering is not limited to these regions." (February 9, 2021)

 

While activity associated with the geomagnetic storm was expected as:

 

"The geomagnetic field saw stormy conditions today. The AP level was 21.  High latitude geomagnetic field saw quiet conditions with AP 31. This appears to continue the strongest geomagnetic storm since AP reached 37 on November 23, 2020 and prior to that September 24-29, 2020. Enhanced seismicity is expected near 90E and 90W longitudes, near the geomagnetic equator and at high latitudes with this storm over the next several days." (February 8, 2021)

 

O: 09FEB2021 12:47:32   6.5S  130.0E mb=4.5  EMSC   BANDA SEA

O: 09FEB2021 10:49:36   7.1S  130.6E ML=4.6  EMSC   KEP. TANIMBAR REGION, INDONESIA

O:  9FEB2021 07:24:47   6.5S  130.0E Mw=5.2  EMSC   BANDA SEA                    

P:  4FEB2021 130854     7.0S  130.0E 4.0-5.3 BAAAA  West Irian, PNG            

 

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:  9FEB2021 22:40:32  44.4N   80.6E mb=4.4  EMSC   KAZAKHSTAN-XINJIANG BORDER REG

P:  7FEB2021 130981    41.0N   82.0E 4.0-5.7 ACAAA  Kirgizstan/Xinjiang        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 10FEB2021 02:54:49   1.4S  100.4E ML=3.9  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  7FEB2021 130827     1.0N  100.0E 4.0-5.4 BCAAA  So. Sumatera               

 

O:  9FEB2021 20:44:36   2.0N   97.7E ML=4.3  EMSC   NIAS REGION, INDONESIA       

P:  9FEB2021 130826     3.0N   95.0E 4.0-5.7 AACAA  Nicobar Islands            

 

O:  9FEB2021 21:18:06   5.7S  103.8E ML=3.4  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 10FEB2021 130847     7.0S  104.0E 4.0-5.6 AAAAA  So. of Sumatera            

P:  8FEB2021 130847     7.0S  105.0E 4.0-5.7 ABAAA  So. of Java                

 

O: 09FEB2021 12:47:32   6.5S  130.0E mb=4.5  EMSC   BANDA SEA

O: 09FEB2021 10:49:36   7.1S  130.6E ML=4.6  EMSC   KEP. TANIMBAR REGION, INDONESIA

O:  9FEB2021 07:24:47   6.5S  130.0E Mw=5.2  EMSC   BANDA SEA                    

P:  4FEB2021 130854     7.0S  130.0E 4.0-5.3 BAAAA  West Irian, PNG            

 

CENTRAL AND SOUTH AMERICA

 

O:  9FEB2021 11:28     18.6S   69.9W mb=4.8  GUC    Arica at Pocon Chile; III Aric

P:  9FEB2021 131084    20.0S   70.0W 4.0-5.4 ABAAA  So. Peru/Bolivia           

 

GUC reported this earthquake was felt with intensity  IV in  Arica at Pocon Chile; III Arica, Codpa; II Putre; Tarapaca with III in Camina, Huara and II in Alto Hospicio and Iquique, Chile.

 

O: 10FEB2021 01:03:28   7.3N   82.2W mb=4.4  EMSC   SOUTH OF PANAMA              

P:  3FEB2021 130821     8.0N   83.0W 3.5-5.1 CAAAA  Costa Rica                 

 

NEIC reported this earthquake of M 4.4 in Panama was felt with intensity II-III in the area(s) of Panama at San Antonio, Veraguas.

 

O:  9FEB2021 13:08:20  14.4N   91.3W mb=4.1  EMSC   GUATEMALA                    

P:  7FEB2021 130862    15.0N   92.0W 3.5-5.4 AAAAA  Guatemala                  

 

O: 10FEB2021 03:10:32  15.5S   71.8W mb=4.1  EMSC   SOUTHERN PERU                

P:  9FEB2021 131068    16.0S   73.0W 4.0-5.5 AAAAA  So. Peru/Bolivia           

 

O: 09FEB2021 10:01:55  15.9N   98.9W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO

O: 10FEB2021 03:41:19  15.8N   99.2W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  7FEB2021 130877    16.0N   99.0W 3.5-5.3 BAAAA  Oaxaca, Mexico             

 

O:  9FEB2021 10:24:47  18.4N   67.4W ML=3.1  EMSC   MONA PASSAGE, PUERTO RICO    

P:  6FEB2021 130879    18.0N   68.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O:  9FEB2021 11:28:19  18.6S   70.0W mb=4.8  EMSC   TARAPACA, CHILE              

P:  4FEB2021 131069    18.0S   71.0W 4.0-5.5 BAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 4.8 in Tarapaca, Chile was felt with intensity II-III in the area(s) of Tarapaca, Chile at Arica and Iquique.

 

O:  9FEB2021 11:12:10  19.0N   73.3W ML=3.5  EMSC   HAITI REGION                 

P:  4FEB2021 130886    20.0N   71.0W 3.0-4.6 BABAA  Bahamas/No. Caribbean       

 

O:  9FEB2021 13:07:44  19.1N   64.5W ML=3.0  EMSC   VIRGIN ISLANDS REGION        

O: 10FEB2021 01:34:16  19.2N   65.8W Md=3.2  EMSC   PUERTO RICO REGION           

O: 10FEB2021 00:23:03  19.4N   65.7W Md=3.5  EMSC   PUERTO RICO REGION

P: 10FEB2021 130885    20.0N   65.0W 3.0-4.4 AAAAA  Bahamas/No. Caribbean      

 

O:  9FEB2021 16:51:35  20.3N   70.8W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P:  4FEB2021 130886    20.0N   71.0W 3.0-4.6 BAAAA  Bahamas/No. Caribbean      

 

O:  9FEB2021 09:23:24  23.1S   66.4W mb=4.4  EMSC   JUJUY, ARGENTINA             

P:  9FEB2021 131077    21.0S   67.0W 4.0-5.3 ACAAA  Argentina                  

 

AFRICA AND EUROPE

 

O:  9FEB2021 23:25:47   1.2S   28.6E mb=4.5  EMSC   LAC KIVU REGION, CONGO       

P: 31JAN2021 130557     2.0S   29.0E 3.0-4.4 CAAAA  Lake Victoria area         

 

O:  9FEB2021 07:30:34  37.8N   26.4E ML=4.1  EMSC   DODECANESE ISLANDS, GREECE   

P: 10FEB2021 130904    37.0N   26.0E 3.0-4.7 AAAAA  Aegean Sea                 

 

O:  9FEB2021 20:20:07  66.7N   18.0W ML=3.2  EMSC   ICELAND REGION               

P:  6FEB2021 131047    66.0N   17.0W 3.0-4.3 BAAAA  Iceland area               

 

O: 09FEB2021 15:53:57  38.6N   31.7E ML=4.2  EMSC   WESTERN TURKEY

O:  9FEB2021 15:51:54  38.6N   31.6E ML=4.6  EMSC   WESTERN TURKEY               

P:  4FEB2021 130965    39.0N   33.0E 3.5-5.2 BABAA  Turkey                     

P:  5FEB2021 130964    38.0N   29.0E 3.5-5.2 BBBAA  Turkey                     

 

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

 

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:  9FEB2021 07:07:57  31.3N  140.7E Mw=5.2  EMSC   IZU ISLANDS, JAPAN REGION    

P:  8FEB2021 130938    30.0N  141.0E 4.0-5.4 ABAAA  Off East Coast Honshu       

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 10FEB2021 04:42:12  31.5N  115.7W Ml=3.1  EMSC   BAJA CALIFORNIA, MEXICO

O: 10FEB2021 01:35:49  31.5N  115.7W Ml=2.7  EMSC   BAJA CALIFORNIA, MEXICO      

P:  8FEB2021 130948    32.1N  116.4W 2.5-4.8 AAAAA  So. California             

 

O: 10FEB2021 05:14:33  33.0N  115.9W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 09FEB2021 11:51:25  33.1N  115.6W ML=2.9  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 03:45:05  33.1N  115.7W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:01:15  33.2N  115.6W Mw=3.6  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:03:55  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:05:54  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:05:54  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:20:30  33.2N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:25:07  33.2N  115.6W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:27:09  33.2N  115.6W Mw=3.6  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 01:45:43  33.2N  115.6W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 02:24:48  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 02:26:10  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 04:56:43  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10FEB2021 05:12:11  32.7N  115.8W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 10FEB2021 130948    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

 

O: 09FEB2021 08:54:12  33.5N  116.5W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 09FEB2021 13:07:33  33.7N  116.8W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O:  9FEB2021 16:34:42  33.7N  116.7W Ml=2.4  EMSC   SOUTHERN CALIFORNIA          

P:  8FEB2021 130950    33.9N  116.9W 2.5-4.4 AAAAA  So. California             

 

O: 10FEB2021 00:29:18  35.0N  117.7W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P:  7FEB2021 130953    34.3N  117.5W 2.5-4.4 BAAAA  So. California             

 

O:  9FEB2021 07:08:47  36.4N  120.5W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P: 10FEB2021 130910    36.6N  120.7W 2.5-5.1 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 Fresno and Los Banos.

 

O:  9FEB2021 07:04:44  36.6N  121.2W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P:  9FEB2021 130910    36.8N  121.3W 2.5-5.1 AAAAA  Central California         

 

O:  9FEB2021 18:58:32  37.5N  121.9W Md=2.7  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  9FEB2021 130912    37.8N  122.6W 2.5-4.8 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in San Francisco, California was felt with intensity II-III in the area(s) of San Francisco, California at Fremont, Sunol, Milpitas, Newark, Pleasanton, San Jose and Hayward.

 

O:  9FEB2021 23:26:48  38.1N  118.0W ml=2.0  EMSC   NEVADA                       

P:  7FEB2021 130907    37.9N  118.2W 2.5-4.5 AAAAA  California/Nevada area     

 

O:  9FEB2021 18:05:10  38.8N  122.8W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  7FEB2021 130913    38.8N  122.8W 2.5-4.6 AAAAA  Central California         

 

O:  9FEB2021 17:41:53  40.3N  124.9W Md=2.6  EMSC   OFFSHORE NORTHERN CALIFORNIA 

O: 10FEB2021 06:12:54  40.6N  124.5W Md=2.2  EMSC   OFFSHORE NORTHERN CALIFORNIA

P:  8FEB2021 130997    40.2N  124.2W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

ALASKA

 

O:  9FEB2021 12:31:05  57.6N  155.6W ML=3.0  EMSC   ALASKA PENINSULA             

P:  5FEB2021 131033    56.0N  156.0W 3.0-4.6 BBAAA  Alaska Peninsula           

 

O:  9FEB2021 08:16:06  60.2N  152.6W ML=3.8  EMSC   SOUTHERN ALASKA              

P:  8FEB2021 131039    60.3N  153.0W 3.2-5.1 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.3 in Southern Alaska was felt with intensity II-III in the area(s) of Southern Alaska at Homer and Anchorage.

 

O:  9FEB2021 19:32:29  63.3N  151.8W ML=3.8  EMSC   CENTRAL ALASKA               

P:  6FEB2021 131044    62.7N  151.6W 3.2-5.1 BAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  9FEB2021 06:55:57  47.8N  129.0W MB=3.5  ECAN Tofino, BC                     

O: 09FEB2021 02:06:26  48.1N  129.1W MB=3.5  ECAN Tofino, BC    

P:  8FEB2021 131012    48.3N  128.5W 2.8-5.1 AAAAA  Vancouver Island area      

 

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

 

ROCKY MOUNTAINS REGION

 

O: 09FEB2021 10:01:15  44.3N  115.2W Ml=2.5  EMSC   SOUTHERN IDAHO

O: 09FEB2021 11:26:24  44.3N  115.1W Ml=2.1  EMSC   SOUTHERN IDAHO

O: 09FEB2021 11:35:36  44.3N  115.2W Ml=2.6  EMSC   SOUTHERN IDAHO

O:  9FEB2021 09:03:18  44.3N  115.2W Ml=2.3  EMSC   SOUTHERN IDAHO               

P:  6FEB2021 130985    44.4N  115.2W 2.0-4.2 BAAAA  Montana/Idaho              

 

O:  9FEB2021 09:21:13  31.7N  104.3W ML=4.0  EMSC   WESTERN TEXAS                 

P:  8FEB2021 130944    32.5N  104.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

O:  9FEB2021 07:18:43  44.7N  111.1W Ml=2.2  EMSC   WESTERN MONTANA              

P:  5FEB2021 131015    44.2N  110.3W 2.0-4.0 BAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O:  9FEB2021 03:43:42  43.1N   78.0W MB=2.2  ECAN New York, U.S.                 

P:  3FEB2021 131001    42.0N   80.0W 2.0-4.3 CBBAA  Ohio/Lake Erie             

 

O:  8FEB2021 18:46:51  47.6N   70.1W MB=1.4  ECAN Charlevoix Seismic Zone         

P:  7FEB2021 130982    47.3N   70.5W 2.0-3.9 AAAAA  Maine                      

 

O: 10FEB2021 03:59:02  36.9N   97.5W ML=2.9  EMSC   OKLAHOMA

O: 10FEB2021 04:22:00  36.9N   97.5W ML=2.1  EMSC   OKLAHOMA

O:  9FEB2021 14:11:49  36.3N   98.2W ML=2.0  EMSC   OKLAHOMA                     

P:  9FEB2021 130961    35.0N   98.0W 2.0-4.1 ABAAA  Southern Plains            

 

O: 09FEB2021 18:31:07  34.4N   97.4W ML=2.3  EMSC   OKLAHOMA

O: 10FEB2021 03:43:13  34.4N   97.4W ML=2.1  EMSC   OKLAHOMA

O: 10FEB2021 06:35:15  34.4N   97.4W ML=2.3  EMSC   OKLAHOMA

O:  9FEB2021 10:27:47  34.4N   97.4W ML=2.4  EMSC   OKLAHOMA                     

P:  8FEB2021 130962    35.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

O:  9FEB2021 21:44:05  35.1N   95.4W ML=2.2  EMSC   OKLAHOMA                     

P:  8FEB2021 130962    35.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

HAWAII

 

O:  9FEB2021 22:28:36  19.3N  155.4W ML=3.3  EMSC   ISLAND OF HAWAII, HAWAII     

P:  5FEB2021 130864    19.2N  155.2W 3.0-4.5 BAAAA  Hawaii                     

P:  9FEB2021 130889    20.3N  155.1W 4.0-5.7 AAAAA  Hawaii area                

 

50 YEARS SINCE THE SAN FERNANDO EARTHQUAKE - SO. CALIFORNIA

 

EARTHQUAKE SUMMARY FOR FEBRUARY 8, 2021

 

Fifty years ago on February 9, 1971 near sunrise (6:00 PST), an earthquake of M 6.7 caused major damage in the San Fernando Valley west of Los Angeles. This was a watershed moment in regional seismic history. Twenty-three years later in January, 1994 the Northridge earthquake hit the same area with similar damage and magnitude. This summary maintained this may be part of a characteristic earthquake series and that a third such earthquake was likely in the late 2010's. But while there were some indications that the area was again reaching rupture, this earthquake has not recurred - yet. As it is overdue, however, it is prudent to maintain the supplies for a catastrophic earthquake and this would be  a good time to check how your supplies are holding up. This summary reported on the San Fernando Earthquake of 1971 (see HISTORY section of this summary) as:

 

 2  9 14  9 55 1971  34.411 -118.401   8 6.7   So. California

 

The San Fernando earthquake. Maximum intensity VI when the Olive View Hospital was destroyed.  58 killed of which 49 were at the San Fernando Veterans Ad. Hospital. More than 2,000 injured. Damage estimated at more than $500 million. The near-failure of the Lower Van Norman Dam caused evacuation of thousands. Electrical and utilities were completely disrupted. Ground faulting was observed in the San Fernando area and landslides were common. Highway overpasses, railroads, pipelines were severely damaged by slides. Roads were blocked by rockfalls.

 

An unusual earthquake of M 3.3-3.6 hit the Mount Hood  area of Oregon today. NEIC reported maximum intensity IV in Bingen, Washington and Government Camp and Mount Hood, Parkdale, Oregon. It was also felt with intensity II-III in Oregon at Hood River, Odell, Mosier, Cascade Locks, Rhododendrom and The Dalles, Oregon and Underwood, Washington. As this event follows an M 2.8 in the Mount St. Helens area of Washington yesterday, it could indicate a broader volcanic or plutonic disturbance in the region. An M 2.2 follow up in the Mt. St. Helens area today had been forecast to occur around February 9 (131013). The event near Mt. Hood is the first within about 50 km of Mt. Hood with M>=3.3 since an M 3.3 on July 7, 2003. The only events in this region of M>=3.6 in the past 30 years were an M 4.5 on June 29, 2002 and an aftershock of M 3.8 on the same day. The earthquake on June 29, 2002 followed a day after the M 7.3 in Lander, Southern California (June 28, 1992) and was probably triggered by energy from that source. Forecast 131002 had expected today's event around February 10 within about 25 km of this epicenter. These events are located at 101 degrees from the Mindanao M 7.0 of January 21, 2021 and was probably promoted by energy from that source.

 

O:  9FEB2021 05:34:16  45.5N  121.6W ML=3.3  EMSC   OREGON                       

P: 10FEB2021 131002    45.3N  121.7W 2.0-4.1 AAAAA  Oregon state, U.S.         

 

O:  8FEB2021 16:00:41  46.0N  122.2W Md=2.4  EMSC   WASHINGTON                   

P:  9FEB2021 131013    46.9N  122.0W 2.0-4.3 AAAAA  Washington state, U.S.     

 

The strongest earthquake in the world today was an M 5.5 in New Britain, PNG. NEIC reported it was felt with intensity III in New Britain at Kokopo and Rabaul. This continues a series of moderately large and large earthquakes over the past several days in New Guinea, New Ireland and New Britain. These may be related to the strong geomagnetic storm over this period as this region is located on the geomagnetic equator. The last earthquake of M>=5.5 within about 200 km of today's epicenter was an M 5.8 on October 8, 2020. Forecast 130840  had expected today's activity was likely around February 9.

 

O:  9FEB2021 02:55:49   5.2S  151.7E Mw=5.5  EMSC   NEW BRITAIN REGION, P.N.G.   

P:  9FEB2021 130840     7.0S  151.0E 4.0-5.4 ABAAA  New Ireland                

 

An M 5.4 also occurred in the Kermadec Islands, New Zealand today. It was not reported felt in this remote area. It may have been promoted by the remnants of TC Lucas which was in the vicinity at the time of this event. The last earthquakes within about 200 km of this epicenter with M>=5.4 occurred a month ago on January 8, 2021 and prior to that an M 5.4 on January 10, 2020.  Forecast 131095 had expected today's event in this area around February 4.

 

O:  8FEB2021 08:06:18  30.3S  179.4W Mw=5.4  EMSC   KERMADEC ISLANDS REGION      

P:  4FEB2021 131095    30.0S  178.0W 4.0-5.5 BAAAA  No. Kermadec Islands       

P:  6FEB2021 131099    32.0S  179.0W 4.0-5.4 ABAAA  So. Kermadec Islands       

 

Moderate earthquakes continued to move closer to northern Taiwan today. These included events of M 5.4 and 5.2. NEIC reported maximum shaking with these was VI in Taiwan at Ilan; IV in Taipei and II-III in Hualien. CWB reported the earthquake of M 4.3 was felt with intensity II in Kinmen County, Taiwan.

The events of M 5.5 and 5.7 were reported felt with intensity IV in Yilan; III in Hualien, Taipei, Taoyuan, Nantou, Taipei, Taichung, Hsinchu, Miaoli, II in Hsinchu, Chinghua, Yunlin, Chiayi, Taitung, Tainan and Kaohsiung Counties, Taiwan. These appear to be aftershocks of the M 6.0 on December 10, 2020. The only other such event in the region in the past year was an M 5.7 on February 15, 2020. An M 5.3 hit the same area on February 6, 2021.  Forecast 130897 had expected today's activity within about 50 km was likely around February 10.

 

O:  8FEB2021 16:58:02  24.4N  122.1E Mw=5.4  EMSC   TAIWAN REGION                

O:  8FEB2021 16:56:30  24.4N  122.5E mb=5.1  EMSC   TAIWAN REGION                

O: 08FEB2021 16:58:03  24.4N  122.0E ML=5.7  TAI    Hualien, Taiwan              

O: 08FEB2021 16:56:31  24.4N  122.4E ML=5.5  TAI    Hualien, Taiwan              

O: 08FEB2021 15:34:01  24.2N  118.8E ML=4.3  TAI    Hualien, Taiwan              

P: 10FEB2021 130897    25.0N  122.0E 4.0-5.5 AAAAA  Ryukyu Islands             

 

The strongest earthquake in the U.S. or Canada today was an M 4.1-4.4 in Southeastern Alaska. NEIC reported intensity II-III for this event in Alaska at Yakutat, Elfin Cove, Douglas and Juneau. This is the strongest earthquake within about 200 km of this epicenter in the Yukon since an M 5.2 on December 18, 2019. Forecast 131038 had expected today's event within about 50 km around February 7. This epicenter is at 102 degrees from the M 6.7 in the West Chile Rise of February 3, 2021 and was probably promoted by concentrated energy from that source.

 

O: 08FEB2021 09:42:28  59.7N  137.5W MB=4.4  ECAN OF HAINES JUNCTION, YT  

O:  8FEB2021 09:42:21  59.4N  138.3W mb=4.1  EMSC   SOUTHEASTERN ALASKA          

O:  8FEB2021 11:52:09  59.4N  138.4W ML=3.6  EMSC   SOUTHEASTERN ALASKA          

P:  7FEB2021 131038    60.0N  138.0W 3.2-5.0 AAAAA  Central Alaska             

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 08FEB2021 16:58:03  24.4N  122.0E ML=5.7  TAI    Hualien, Taiwan               

O: 08FEB2021 16:56:31  24.4N  122.4E ML=5.5  TAI    Hualien, Taiwan              

O: 08FEB2021 15:34:01  24.2N  118.8E ML=4.3  TAI    Hualien, Taiwan              

O:  8FEB2021 16:58:02  24.4N  122.1E Mw=5.4  EMSC   TAIWAN REGION                 

O:  8FEB2021 16:56:30  24.4N  122.5E mb=5.1  EMSC   TAIWAN REGION                

P: 10FEB2021 130897    25.0N  122.0E 4.0-5.5 BAAAA  Ryukyu Islands             

 

CWB reported this earthquake of M 4.3 was felt with intensity II in Kinmen County, Taiwan.

The events of M 5.5 and 5.7 were reported felt with intensity IV in Yilan; III in Hualien, Taipei, Taoyuan, Nantou, Taipei, Taichung, Hsinchu, Miaoli, II in Hsinchu, Chinghua, Yunlin, Chiayi, Taitung, Tainan and Kaohsiung Counties, Taiwan.

 

O:  8FEB2021 08:19:15  26.6N   93.1E ML=3.7  EMSC   ASSAM, INDIA                 

P:  2FEB2021 130895    27.0N   92.0E 4.0-5.7 CAAAA  Myanmar                    

 

O:  9FEB2021 01:50:07  28.1N   87.9E mb=4.2  EMSC   WESTERN XIZANG               

P:  6FEB2021 130896    27.0N   88.0E 3.5-5.4 BBAAA  Nepal                      

 

NEIC reported this earthquake of M 4.2 in Nepal was felt with intensity II-III in the area(s) of Nepal at Dharan, Sunsari and possibly in Bangla, India.

 

O:  9FEB2021 00:39:07  39.6N   53.8E ML=4.3  EMSC   TURKMENISTAN                 

P:  9FEB2021 130980    40.0N   52.0E 4.0-5.7 AABAA  Kazakhstan                 

 

INDONESIA AND PHILIPPINES

 

O:  8FEB2021 12:34:21   5.4S  145.9E mb=5.1  EMSC   EASTERN NEW GUINEA REG., P.N.G

P:  6FEB2021 130841     6.0S  147.0E 4.0-5.4 AAAAA  New Ireland                

 

NEIC reported this earthquake of M 5.1 in Eastern New Guinea was felt with intensity II-III in the area(s) of Eastern New Guinea at Madang (IV) and Mount Hagen.

 

O:  8FEB2021 12:12:08   9.6S  119.8E mb=4.1  EMSC   SUMBA REGION, INDONESIA      

P:  8FEB2021 130850     8.0S  118.0E 4.0-5.4 ABBAA  Sumbawa Island area        

 

O:  9FEB2021 02:51:14  19.1N  121.2E mb=4.8  EMSC   BABUYAN ISL REGION, PHILIPPINE

P:  8FEB2021 130900    20.0N  122.0E 4.0-5.4 AAAAA  Taiwan                     

 

O:  8FEB2021 23:24:43  11.9N  120.9E Mw=5.0  EMSC   PALAWAN, PHILIPPINES         

P:  5FEB2021 130867    12.0N  122.0E 3.5-4.8 BAAAA  Luzon, Philippines         

 

O:  8FEB2021 07:54:11  14.6N  118.9E mb=4.8  EMSC   PHILIPPINE ISLANDS REGION    

P:  5FEB2021 130868    14.0N  125.0E 3.5-5.1 BACAA  Luzon, Philippines         

 

CENTRAL AND SOUTH AMERICA

 

O:  9FEB2021 01:40:59   5.4S   77.3W mb=5.0  EMSC   NORTHERN PERU                

P: 10FEB2021 130843     6.0S   79.0W 4.0-5.6 AABAA  No. Peru                   

 

NEIC reported this earthquake of M 5.0 in northern Peru was felt with intensity II-III in the area(s) of northern Peru at Rioja San Martin (IV) and Moyobamba.

 

O:  9FEB2021 04:37:50   9.5N   85.6W mb=4.5  EMSC   OFF COAST OF COSTA RICA      

P: 10FEB2021 130821     9.0N   86.0W 3.5-5.2 AAAAA  Costa Rica                 

 

O:  8FEB2021 21:04:08   5.6N   82.8W mb=4.7  EMSC   SOUTH OF PANAMA              

P:  9FEB2021 130820     5.0N   83.0W 3.5-5.1 AAAAA  Costa Rica                 

 

O:  9FEB2021 03:03:13  16.0N   98.8W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  7FEB2021 130877    16.0N   99.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O:  8FEB2021 21:10:59  16.4S   71.9W mb=5.1  EMSC   SOUTHERN PERU                

P:  9FEB2021 131068    16.0S   73.0W 4.0-5.5 AAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 5.1 in Peru was felt with intensity II-III in the area(s) of Peru at Arequipa.

 

O:  8FEB2021 20:37:04  17.5N   94.7W ML=4.0  EMSC   VERACRUZ, MEXICO             

P:  6FEB2021 130859    18.0N   95.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O:  8FEB2021 16:19:46  18.4N  101.6W ML=4.0  EMSC   GUERRERO, MEXICO             

P:  4FEB2021 130871    18.0N  101.0W 3.5-5.1 BAAAA  Michoacan, Mexico          

 

O:  8FEB2021 11:18:29  20.5N   71.0W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P:  4FEB2021 130886    20.0N   71.0W 3.0-4.6 BAAAA  Bahamas/No. Caribbean      

 

O:  8FEB2021 20:29:24  28.6N  108.7W ML=3.9  EMSC   SONORA, MEXICO               

P:  8FEB2021 130888    28.0N  112.0W 3.5-5.2 AACAA  Gulf of California         

 

O:  8FEB2021 23:10:31  54.8S   66.9W mb=4.1  EMSC   TIERRA DEL FUEGO, ARGENTINA  

 

 

O: 08FEB2021 09:06:52  19.2N   64.7W Md=3.4  EMSC   VIRGIN ISLANDS REGION

O: 08FEB2021 14:23:29  19.2N   64.7W ML=3.6  EMSC   VIRGIN ISLANDS REGION

O: 08FEB2021 14:32:47  19.2N   64.7W ML=3.0  EMSC   VIRGIN ISLANDS REGION

O: 09FEB2021 01:18:33  18.9N   65.1W Md=3.3  EMSC   VIRGIN ISLANDS REGION

O: 09FEB2021 02:16:01  18.9N   64.9W Md=3.3  EMSC   VIRGIN ISLANDS REGION

O: 09FEB2021 04:05:44  18.9N   65.1W Md=3.3  EMSC   VIRGIN ISLANDS REGION

O: 09FEB2021 04:53:55  18.9N   65.3W ML=3.0  EMSC   PUERTO RICO REGION

O: 08FEB2021 08:46:22  19.0N   64.3W ML=3.3  EMSC   VIRGIN ISLANDS REGION

O: 08FEB2021 18:05:12  19.0N   64.8W Md=3.6  EMSC   VIRGIN ISLANDS REGION

O: 08FEB2021 18:30:01  19.0N   64.7W Md=3.4  EMSC   VIRGIN ISLANDS REGION

O: 09FEB2021 04:50:11  19.0N   64.8W Md=3.6  EMSC   VIRGIN ISLANDS REGION

O: 08FEB2021 19:23:18  18.9N   64.7W Md=3.2  EMSC   VIRGIN ISLANDS REGION

O:  8FEB2021 22:25:14  19.1N   64.8W ML=3.2  EMSC   VIRGIN ISLANDS REGION        

P: 10FEB2021 130885    20.0N   65.0W 3.0-4.4 AAAAA  Bahamas/No. Caribbean      

 

O: 08FEB2021 08:56:14  15.6N   94.0W mb=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO

O:  8FEB2021 10:58:05  15.0N   93.0W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  7FEB2021 130862    15.0N   92.0W 3.5-5.4 AAAAA  Guatemala                  

 

O: 08FEB2021 11:08:13  15.9N   97.3W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O: 08FEB2021 11:14:23  15.9N   97.3W ML=4.3  EMSC   OFFSHORE OAXACA, MEXICO

O: 08FEB2021 11:14:23  15.9N   97.3W ML=4.3  EMSC   OFFSHORE OAXACA, MEXICO

O:  9FEB2021 03:57:29  15.4N   96.5W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  4FEB2021 130877    15.0N   96.0W 3.5-5.1 BAAAA  Oaxaca, Mexico             

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O:  8FEB2021 08:59:01   9.1S  157.6E mb=5.0  EMSC   SOLOMON ISLANDS              

P:  3FEB2021 130848     9.0S  157.0E 4.0-5.4 BAAAA  Solomon Islands            

P:  6FEB2021 130848     8.0S  156.0E 4.0-5.4 ABBAA  Solomon Islands            

 

O:  9FEB2021 02:55:49   5.2S  151.7E Mw=5.5  EMSC   NEW BRITAIN REGION, P.N.G.   

P:  9FEB2021 130840     7.0S  151.0E 4.0-5.4 ABAAA  New Ireland                

 

O:  9FEB2021 01:22:24  10.5S  161.4E mb=4.9  EMSC   SOLOMON ISLANDS              

P:  7FEB2021 131064    10.0S  162.0E 4.0-5.3 AAAAA  No. of Santa Cruz Islands  

 

O:  8FEB2021 20:08:09  18.9S  172.6W mb=5.1  EMSC   TONGA REGION                 

P:  7FEB2021 131085    20.0S  175.0W 4.0-5.5 ABBAA  Tonga Islands              

 

O:  8FEB2021 16:13:12  20.9S  178.9W mb=4.6  EMSC   FIJI REGION                   

P:  4FEB2021 131086    22.0S  180.0W 4.0-5.5 BBAAA  Tonga Islands              

 

OCEAN RIDGES

 

O:  9FEB2021 00:17:51  52.9S   27.8E mb=4.9  EMSC   SOUTH OF AFRICA              

P: 30JAN2021 130810    51.0S   29.0E 4.0-5.5 CBAAA  Atlantic-Indian Ridge      

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  8FEB2021 08:06:18  30.3S  179.4W Mw=5.4  EMSC   KERMADEC ISLANDS REGION      

P:  4FEB2021 131095    30.0S  178.0W 4.0-5.5 BAAAA  No. Kermadec Islands       

P:  6FEB2021 131099    32.0S  179.0W 4.0-5.4 ABAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O:  9FEB2021 03:39:26  30.1N  131.0E mb=5.0  EMSC   KYUSHU, JAPAN                

P:  8FEB2021 130924    30.0N  131.0E 3.5-4.9 AAAAA  Kyushu, Japan area         

 

O:  9FEB2021 04:48:20  41.3N  143.5E mb=4.8  EMSC   HOKKAIDO, JAPAN REGION       

P:  5FEB2021 130977    41.0N  143.0E 3.5-5.6 BAAAA  Hokkaido, Japan            

 

O:  8FEB2021 14:24:00  42.4N  145.0E Mw=5.0  EMSC   HOKKAIDO, JAPAN REGION       

P:  2FEB2021 130978    43.0N  144.0E 3.5-5.5 CAAAA  Hokkaido, Japan            

 

NEIC reported this earthquake of M 5.0 in Hokkaido, Japan was felt with intensity II-III in the area(s) of Hokkaido, Japan.

 

O:  8FEB2021 22:35:40  43.6N  146.6E mb=4.5  EMSC   KURIL ISLANDS                

P:  6FEB2021 131008    45.0N  147.0E 3.5-5.6 ABAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 08FEB2021 10:22:27  37.5N  121.9W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O:  8FEB2021 09:55:43  37.5N  121.8W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  5FEB2021 130912    37.7N  121.9W 2.5-4.6 BAAAA  Central California         

 

O: 08FEB2021 15:15:41  38.1N  118.1W ML=3.5  EMSC   NEVADA

O: 08FEB2021 07:24:04  37.9N  118.6W Md=2.0  EMSC   CENTRAL CALIFORNIA

O: 08FEB2021 07:24:04  37.9N  118.6W Md=2.0  EMSC   CENTRAL CALIFORNIA

O: 08FEB2021 16:34:50  37.9N  118.6W Md=2.2  EMSC   CENTRAL CALIFORNIA

O:  8FEB2021 10:35:24  38.2N  117.8W ml=2.4  EMSC   NEVADA                       

P:  7FEB2021 130907    37.9N  118.2W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 08FEB2021 08:39:03  32.7N  115.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 08FEB2021 13:03:33  32.7N  115.8W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 08FEB2021 08:02:09  32.8N  115.8W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 09FEB2021 00:34:07  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 09FEB2021 05:42:57  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 09FEB2021 05:48:57  33.3N  116.2W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O:  8FEB2021 08:00:12  32.7N  115.8W ML=3.1  EMSC   SOUTHERN CALIFORNIA          

O:  8FEB2021 08:00:12  32.7N  115.8W ML=3.5  ANSS   SOUTHERN CALIFORNIA          

P: 10FEB2021 130948    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.5 in Southern California was felt with intensity II-III in the area(s) of Southern California at Imperial, Mexicali and Jacumba.

 

O:  8FEB2021 19:23:23  32.8N  117.3W ML=2.0  EMSC   CHANNEL ISLANDS REG., CALIFORN

P: 10FEB2021 130947    32.0N  117.4W 2.5-4.6 AAAAA  So. California             

 

O:  8FEB2021 12:05:50  33.7N  116.0W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 10FEB2021 130948    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

 

O:  8FEB2021 13:54:35  36.6N  121.1W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P: 10FEB2021 130910    36.6N  120.7W 2.5-5.1 AAAAA  Central California         

 

O:  8FEB2021 18:44:37  37.4N  119.0W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P:  7FEB2021 130908    38.3N  119.3W 2.5-4.9 AAAAA  California/Nevada area     

 

O:  8FEB2021 09:55:43  37.5N  121.8W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  5FEB2021 130912    37.7N  121.9W 2.5-4.6 BAAAA  Central California          

 

O:  8FEB2021 19:16:59  38.0N  122.1W Md=2.0  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  9FEB2021 130912    37.8N  122.6W 2.5-4.8 AAAAA  Central California         

 

O:  8FEB2021 10:35:24  38.2N  117.8W ml=2.4  EMSC   NEVADA                       

P:  7FEB2021 130907    37.9N  118.2W 2.5-4.5 AAAAA  California/Nevada area     

 

O:  8FEB2021 16:24:32  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P:  7FEB2021 130913    38.8N  122.8W 2.5-4.6 AAAAA  Central California         

 

O:  8FEB2021 23:54:58  40.2N  122.2W Md=2.4  EMSC   NORTHERN CALIFORNIA          

O:  8FEB2021 14:11:55  41.6N  122.2W ML=2.4  EMSC   NORTHERN CALIFORNIA          

P:  9FEB2021 130996    40.6N  122.4W 2.5-4.3 AAAAA  Northern California        

 

 

ALASKA

 

O:  8FEB2021 12:34:39  53.1N  167.0W mb=3.9  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  5FEB2021 131023    52.5N  166.5W 3.5-4.8 BAAAA  Fox Islands, Aleutians     

 

O:  8FEB2021 07:12:56  58.3N  155.9W ml=3.1  EMSC   ALASKA PENINSULA             

P:  5FEB2021 131033    56.0N  156.0W 3.0-4.6 BCAAA  Alaska Peninsula           

 

O: 08FEB2021 09:42:28  59.7N  137.5W MB=4.4  ECAN OF HAINES JUNCTION, YT  

O:  8FEB2021 09:42:21  59.4N  138.3W mb=4.1  EMSC   SOUTHEASTERN ALASKA          

O:  8FEB2021 11:52:09  59.4N  138.4W ML=3.6  EMSC   SOUTHEASTERN ALASKA          

P:  7FEB2021 131038    60.0N  138.0W 3.2-5.0 AAAAA  Central Alaska             

 

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  9FEB2021 05:34:16  45.5N  121.6W ML=3.3  EMSC   OREGON                        

P: 10FEB2021 131002    45.3N  121.7W 2.0-4.1 AAAAA  Oregon state, U.S.         

 

O:  8FEB2021 16:00:41  46.0N  122.2W Md=2.4  EMSC   WASHINGTON                   

P:  9FEB2021 131013    46.9N  122.0W 2.0-4.3 AAAAA  Washington state, U.S.     

 

O: 08FEB2021 09:42:28  59.7N  137.5W MB=4.4  ECAN OF HAINES JUNCTION, YT  

O:  8FEB2021 09:42:21  59.4N  138.3W mb=4.1  EMSC   SOUTHEASTERN ALASKA          

O:  8FEB2021 11:52:09  59.4N  138.4W ML=3.6  EMSC   SOUTHEASTERN ALASKA          

P:  7FEB2021 131038    60.0N  138.0W 3.2-5.0 AAAAA  Central Alaska             

 

O: 07FEB2021 16:54:50  48.8N  129.0W MB=3.5  ECAN Port Alice, BC   

O: 07FEB2021 08:11:07  47.6N  129.1W MB=3.8  ECAN Tofino, BC    

O:  6FEB2021 19:52:47  48.7N  129.0W MB=3.5  ECAN Port Alice, BC                 

P:  8FEB2021 131012    48.3N  128.5W 2.8-5.1 AAAAA  Vancouver Island area      

 

O:  6FEB2021 05:08:24  50.6N  130.5W MB=3.4  ECAN Port Hardy, BC                 

P:  8FEB2021 131020    50.5N  130.4W 3.0-5.2 AAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O:  8FEB2021 22:50:38  36.3N  106.8W ML=3.1  EMSC   NEW MEXICO                   

P:  2FEB2021 130918    37.4N  104.7W 2.0-4.1 CBBAA  Colorado area              

 

O: 08FEB2021 23:52:51  44.3N  115.2W Ml=2.3  EMSC   SOUTHERN IDAHO

O: 09FEB2021 00:14:33  44.3N  115.2W Ml=2.8  EMSC   SOUTHERN IDAHO

O:  8FEB2021 23:49:42  44.3N  115.2W Ml=3.6  EMSC   SOUTHERN IDAHO               

P:  6FEB2021 130985    44.4N  115.2W 2.0-4.2 AAAAA  Montana/Idaho              

 

O: 08FEB2021 10:39:29  31.7N  104.4W ML=3.8  EMSC   WESTERN TEXAS

O: 08FEB2021 13:53:11  31.7N  104.4W mb=3.7  EMSC   WESTERN TEXAS

O:  8FEB2021 10:27:07  31.7N  104.4W ML=3.4  EMSC   WESTERN TEXAS                

P:  8FEB2021 130944    32.5N  104.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O:  8FEB2021 20:24:35  34.4N   97.4W ML=2.4  EMSC   OKLAHOMA                     

P:  8FEB2021 130962    35.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

O:  8FEB2021 23:08:51  38.7N   97.0W mb=2.8  EMSC   KANSAS                       

P:  4FEB2021 130962    37.0N   97.0W 2.0-4.1 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 Hope.

 

O:  9FEB2021 03:43:42  43.1N   78.0W MB=2.2  ECAN New York, U.S.                 

P:  3FEB2021 131001    42.0N   80.0W 2.0-4.3 CBBAA  Ohio/Lake Erie             

 

O: 07FEB2021 06:38:57  72.3N   76.5W MB=2.1  ECAN Pond Inlet, NU   

O: 07FEB2021 02:26:25  72.3N   76.4W MB=2.4  ECAN Pond Inlet, NU   

O:  8FEB2021 04:17:04  72.2N   76.1W MB=3.2  ECAN Pond Inlet, NU                 

P: 10FEB2021 131055    71.0N   75.0W 2.5-4.1 ABAAA  Baffin/Davis Strait Canada 

 

HAWAII

 

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

 

MODERATE AFTERSHOCKS CONTINUE IN MINDANAO, PHILIPPINES

 

EARTHQUAKE SUMMARY FOR FEBRUARY 7, 2021

 

The strongest earthquake in the world today was an M 5.6 aftershock in the region of Southern Mindanao, Philippines. This follows the M 6.0 that occurred there yesterday and was covered in the previous issue of this summary as:

 

 

" ... an M 6.0 in Mindanao, Philippines. NEIC reported this earthquake was felt with damage in Southern Mindanao with intensity XI at Bansalan; VI in Goma, Digos, Kidapawan; VI in Kroondal; V in Padada, Davao and Malita and IV in Bato, and Ula, Mindanao, ... A foreshock of M 4.8 was felt with intensity II-III in Southern Mindanao, Bato, Davao and Panabo. Another foreshock to the north of M 4.6 was felt with intensity III in Cancocotan, Mindanao. This is probably a regional aftershock of the M 7.0 southwest of this that occurred January 21, 2021. Forecast 130825 had expected this activity was likely around February 7.  This activity is located at 143 degrees from the M 6.7 of December 27, 2020 in Los Lagos, Chile  and was probably promoted by energy concentration from these sources." (February 7, 2021)

 

NEIC reported this earthquake of M 5.6 in Mindanao, Philippines was felt with intensity II-III in the area(s) of Mindanao, Philippines at Davao and Libertad.

 

O: 08FEB2021 00:00:43   5.7N  127.1E Mw=5.6  EMSC   PHILIPPINE ISLANDS REGION

O:  7FEB2021 11:19:05   5.5N  126.3E mb=4.4  EMSC   MINDANAO, PHILIPPINES        

P:  7FEB2021 130825     5.0N  126.0E 4.0-5.3 AAAAA  Mindanao, Philippines      

 

The strongest earthquake today in the Western Hemisphere was an M 5.2 in Nicaragua. This is the largest earthquake within Nicaragua within about 150 km of this epicenter in at least 30 years. Most of the earthquakes in the region of  Nicaragua at this magnitude level occur about 150-200 km to the southwest of today's epicenter. Forecast 130874 had expected this event about 150 km south of this epicenter was likely around February 3. This epicenter is at 142 degrees from the M 7.0 in Mindanao, Philippines of January 21 and may have been promoted by energy from that source.

 

O:  7FEB2021 18:02:51  13.4N   85.8W ML=5.2  EMSC   NICARAGUA                    

P:  3FEB2021 130874    12.0N   86.0W 3.5-5.6 BBAAA  Nicaragua                  

 

An unusual earthquake of M 3.9 occurred northeast of Australia in the Norfolk Island area. The remnants of Tropical Cyclone Lucas passed over this area several days ago after triggering a series of events north of this in the Loyalty Islands which has continuing moderate aftershocks still. Forecast 131080 had expected activity in this area was likely in early February.

 

O:  7FEB2021 12:26:31  27.1S  171.0E ML=3.9  EMSC   NORFOLK ISLAND, AUSTRALIA REGI

P:  6FEB2021 131080    23.0S  169.0E 4.0-5.4 ACBAA  Loyalty Islands             

 

An M 2.6-2.8 earthquake occurred today in the Mt. St. Helens area of Washington State. NEIC reported this earthquake of M 2.8 in Washington State was felt with intensity II-III in the area(s) of Washington State at Yacolt and Carnation.  The last earthquake in the Mt. St. Helens area of M>=2 was an M 2.4 on August 26, 2020. But the last earthquake in the area of M>=2.6 occurred nearly three years ago on May 28, 2018 with M 3.0. The last of significantly larger magnitude was an M 3.9 on January 3, 2018. Forecast 131013 had expected the area would seen enhanced seismicity around February 9. This epicenter is at the third node (120 degrees) from the South Shetland Islands M 7.1 of January 23, 2021 and at 101 degrees from the Mindanao quake of M 7.0 of January 21 and my have been enhanced by energy from those sources.

 

O:  7FEB2021 23:13:29  46.2N  122.1W Md=2.6  EMSC   MT. ST. HELENS AREA, WASHINGTO

O:  7FEB2021 23:13:29  46.2N  122.1W Md=2.8  ANSS   MT. ST. HELENS AREA, WASHINGTO

P:  9FEB2021 131013    46.9N  122.0W 2.0-4.3 AAAAA  Washington state, U.S.     

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:  7FEB2021 20:16:56  24.4N  122.0E ML=4.3  TAI    Hualien, Taiwan              

O:  7FEB2021 10:26:04  23.5N  121.5E ML=4.1  TAI    Hualien, Taiwan              

P: 10FEB2021 130897    25.0N  122.0E 4.0-5.5 BAAAA  Ryukyu Islands              

 

CWB reported this earthquake was felt with intensity II in Yilan and I in Hualien and Taipei Counties, Taiwan.

 

O:  8FEB2021 03:33:46  39.5N   71.5E mb=4.0  EMSC   TAJIKISTAN                   

P:  5FEB2021 130922    39.0N   72.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

O:  7FEB2021 15:38:07  39.4N   74.2E mb=4.2  EMSC   SOUTHERN XINJIANG, CHINA     

P:  5FEB2021 130981    40.0N   75.0E 4.0-5.9 AAAAA  Kirgizstan/Xinjiang        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 07FEB2021 21:57:39   3.1S  129.2E mb=4.2  EMSC   SERAM, INDONESIA

O: 07FEB2021 18:10:58   4.0S  128.9E ML=4.8  EMSC   SERAM, INDONESIA

O:  7FEB2021 18:19:35   2.9S  129.4E ML=4.2  EMSC   SERAM, INDONESIA              

P:  8FEB2021 130851     3.0S  130.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O:  7FEB2021 16:48:46   3.0S  138.7E ML=4.2  EMSC   PAPUA, INDONESIA             

P:  6FEB2021 130852     3.0S  139.0E 4.0-5.6 AAAAA  West Irian, PNG             

 

O: 08FEB2021 00:00:43   5.7N  127.1E Mw=5.6  EMSC   PHILIPPINE ISLANDS REGION

O:  7FEB2021 11:19:05   5.5N  126.3E mb=4.4  EMSC   MINDANAO, PHILIPPINES        

P:  7FEB2021 130825     5.0N  126.0E 4.0-5.3 AAAAA  Mindanao, Philippines      

 

O:  7FEB2021 12:30:11   6.6S  130.9E ML=4.5  EMSC   BANDA SEA                    

P:  4FEB2021 130854     7.0S  130.0E 4.0-5.3 BAAAA  West Irian, PNG            

 

O:  7FEB2021 21:24:45   6.9S  127.0E mb=4.3  EMSC   BANDA SEA                    

P:  8FEB2021 130833     5.0S  126.0E 4.0-5.4 ABAAA  Ceram area                 

 

O:  8FEB2021 01:12:29   9.3S  111.4E mb=4.8  EMSC   SOUTH OF JAVA, INDONESIA     

P: 29JAN2021 130568     9.0S  111.0E 4.0-5.4 CAAAA  So. of Java                

 

CENTRAL AND SOUTH AMERICA

 

O:  7FEB2021 12:02:53   2.8S   77.9W ML=4.0  EMSC   PERU-ECUADOR BORDER REGION   

P:  8FEB2021 130834     2.0S   78.0W 4.0-5.4 AAAAA  Ecuador                    

 

O:  7FEB2021 18:02:51  13.4N   85.8W ML=5.2  EMSC   NICARAGUA                    

P:  3FEB2021 130874    12.0N   86.0W 3.5-5.6 BBAAA  Nicaragua                  

 

O:  8FEB2021 05:56:47  14.2N   94.2W ML=4.4  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P:  4FEB2021 130859    15.0N   93.0W 3.5-5.1 BAAAA  Chiapas, Mexico            

 

O:  8FEB2021 05:54:29  14.3N   92.2W ML=4.4  EMSC   OFFSHORE GUATEMALA           

P:  7FEB2021 130862    15.0N   92.0W 3.5-5.4 AAAAA  Guatemala                  

 

O:  7FEB2021 22:30:36  16.6N   93.8W ML=4.1  EMSC   CHIAPAS, MEXICO              

P:  4FEB2021 130859    15.0N   93.0W 3.5-5.1 BBAAA  Chiapas, Mexico            

 

O:  8FEB2021 00:05:16  17.6N   94.7W ML=4.2  EMSC   VERACRUZ, MEXICO             

P:  6FEB2021 130859    18.0N   95.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O:  7FEB2021 16:26:25  17.9N   67.0W ML=3.0  EMSC   PUERTO RICO REGION           

P:  4FEB2021 130879    18.0N   67.0W 3.4-5.3 BAAAA  Puerto Rico                

 

O:  7FEB2021 09:26:38  19.7N   68.3W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P:  8FEB2021 130886    20.0N   69.0W 3.0-4.8 AAAAA  Bahamas/No. Caribbean      

 

O:  7FEB2021 09:26:55  24.3S   67.0W mb=4.5  EMSC   SALTA, ARGENTINA             

P:  2FEB2021 131077    24.0S   67.0W 4.0-6.0 BAAAA  Argentina                  

 

O: 07FEB2021 17:01:22  19.1N   64.9W Md=3.3  EMSC   VIRGIN ISLANDS REGION

O: 08FEB2021 06:25:18  19.2N   64.8W Md=3.4  EMSC   VIRGIN ISLANDS REGION

O:  7FEB2021 15:34:27  18.8N   65.3W Md=3.1  EMSC   PUERTO RICO REGION           

O:  7FEB2021 13:51:22  19.1N   64.8W Md=3.3  EMSC   VIRGIN ISLANDS REGION         

P: 10FEB2021 130885    20.0N   65.0W 3.0-4.4 BAAAA  Bahamas/No. Caribbean      

 

O: 08FEB2021 06:15:13  16.3N   99.0W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO

O:  7FEB2021 18:40:24  16.2N   98.4W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P:  7FEB2021 130877    16.0N   99.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

AFRICA AND EUROPE

 

O:  7FEB2021 08:58:12  37.4N   15.7E ML=3.7  EMSC   SICILY, ITALY                

P: 10FEB2021 130925    39.0N   14.0E 3.0-4.8 BBBAA  Mediterranean/Sicily        

 

O:  8FEB2021 00:03:02  39.1N   36.0E ML=3.8  EMSC   CENTRAL TURKEY               

O: 07FEB2021 22:01:15  39.1N   36.1E mb=4.3  EMSC   CENTRAL TURKEY

P:  4FEB2021 130965    39.0N   33.0E 3.5-5.2 BABAA  Turkey                     

 

NEIC reported this earthquake of M 4.3 in Turkey was felt with intensity II-III in the area(s) of Turkey at Kayseri.

 

O:  7FEB2021 09:37:21  47.0N    7.0E ML=2.9  EMSC   SWITZERLAND                  

P:  4FEB2021 130971    46.0N    7.0E 3.0-5.0 ABAAA  Austria                     

P: 28JAN2021 130689    47.0N    7.0E 3.0-5.1 CAAAA  Austria                    

 

O:  8FEB2021 04:11:11  40.3N   48.8E ML=3.9  EMSC   AZERBAIJAN                   

O: 08FEB2021 04:12:23  40.3N   48.7E ML=3.8  EMSC   AZERBAIJAN

P:  9FEB2021 130980    40.0N   52.0E 4.0-5.7 AABAA  Kazakhstan                 

 

 

SOUTHWEST PACIFIC

 

O:  7FEB2021 15:41:17  18.0S  178.4W mb=4.6  EMSC   FIJI REGION                  

P:  9FEB2021 131073    18.0S  179.0W 4.0-5.7 AAAAA  Tonga Islands              

 

O:  7FEB2021 12:25:37  23.0S  171.9E mb=4.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P:  6FEB2021 131080    23.0S  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

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  7FEB2021 12:26:31  27.1S  171.0E ML=3.9  EMSC   NORFOLK ISLAND, AUSTRALIA REGI

P:  6FEB2021 131080    23.0S  169.0E 4.0-5.4 ACBAA  Loyalty Islands            

 

O:  7FEB2021 17:49:15  32.5S  179.4W mb=4.3  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  6FEB2021 131099    32.0S  179.0W 4.0-5.4 AAAAA  So. Kermadec Islands       

 

O:  8FEB2021 06:40:10  35.0S  178.9W Mw=4.9  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  6FEB2021 131100    34.0S  179.0W 4.0-5.3 AAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

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

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  7FEB2021 10:23:36  33.9N  116.7W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P:  8FEB2021 130950    33.9N  116.9W 2.5-4.4 AAAAA  So. California             

 

O:  7FEB2021 16:45:53  36.0N  118.1W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P:  8FEB2021 130954    35.9N  117.7W 2.5-4.3 AAAAA  So. California             

 

O:  8FEB2021 00:15:24  37.5N  118.6W Md=2.8  EMSC   CENTRAL CALIFORNIA           

P:  5FEB2021 130907    37.6N  118.6W 2.5-4.5 BAAAA  California/Nevada area     

 

O:  8FEB2021 00:45:32  37.5N  121.8W ML=3.0  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P:  5FEB2021 130912    37.7N  121.9W 2.5-4.6 BAAAA  Central California         

 

NEIC reported this earthquake of M 3.2 in San Francisco, California  was felt with intensity II-III in the area(s) of  San Francisco, California at Milpitas, Fremont, Sunol, San Jose.

 

O:  7FEB2021 17:32:52  37.9N  118.6W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P:  7FEB2021 130907    37.9N  118.2W 2.5-4.5 AAAAA  California/Nevada area     

 

O:  7FEB2021 20:52:25  38.2N  117.8W ML=3.2  EMSC   NEVADA                       

P:  7FEB2021 130907    37.9N  118.2W 2.5-4.5 AAAAA  California/Nevada area     

 

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 Ridgecrest.

 

O:  8FEB2021 01:01:40  39.3N  123.1W Md=2.6  EMSC   NORTHERN CALIFORNIA          

P:  9FEB2021 130914    39.0N  123.1W 2.5-4.7 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in Northern California was felt with intensity II-III in the area(s) of Northern California sy Ukiah, Potter Valley and Redwood Valley.

 

O:  7FEB2021 14:21:35  40.4N  124.5W Md=2.8  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  8FEB2021 130997    40.2N  124.2W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

 

O: 08FEB2021 05:44:03  38.8N  122.8W Md=2.1  EMSC   NORTHERN CALIFORNIA

O:  7FEB2021 18:50:52  38.8N  122.9W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  7FEB2021 130913    38.8N  122.8W 2.5-4.6 AAAAA  Central California         

 

O: 07FEB2021 21:20:37  36.0N  117.3W ML=2.3  EMSC   CENTRAL CALIFORNIA

O: 08FEB2021 04:46:08  36.0N  117.5W Ml=2.3  EMSC   CENTRAL CALIFORNIA

O:  7FEB2021 16:45:53  36.0N  118.1W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P:  8FEB2021 130954    35.9N  117.7W 2.5-4.3 AAAAA  So. California             

 

ALASKA

 

O:  7FEB2021 16:35:15  62.7N  149.3W ML=3.0  EMSC   CENTRAL ALASKA               

P:  6FEB2021 131044    62.7N  149.3W 3.2-5.0 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  8FEB2021 05:29:23  45.7N  122.3W Md=2.8  EMSC   WASHINGTON                   

P: 10FEB2021 131002    45.3N  121.7W 2.0-4.1 AAAAA  Oregon state, U.S.         

 

O:  7FEB2021 23:13:29  46.2N  122.1W Md=2.6  EMSC   MT. ST. HELENS AREA, WASHINGTO

P:  9FEB2021 131013    46.9N  122.0W 2.0-4.3 AAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O:  7FEB2021 13:06:41  32.9N  100.9W mb=2.8  EMSC   WESTERN TEXAS                

P:  4FEB2021 130944    31.6N  101.6W 2.0-4.3 BBAAA  SW U.S.A                   

 

O:  7FEB2021 19:12:40  31.7N  104.4W ML=2.7  EMSC   WESTERN TEXAS                

O: 07FEB2021 19:19:24  31.7N  104.4W ML=2.7  EMSC   WESTERN TEXAS

P:  6FEB2021 130944    31.6N  103.6W 2.0-4.3 AAAAA  SW U.S.A                    

P:  8FEB2021 130944    32.5N  104.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

O:  8FEB2021 04:02:32  44.6N  115.2W ML=2.6  EMSC   SOUTHERN IDAHO               

P:  6FEB2021 130985    44.4N  115.2W 2.0-4.2 AAAAA  Montana/Idaho               

 

EASTERN U.S./CANADA

 

O:  7FEB2021 20:40:51  29.2N   97.5W ML=3.3  EMSC   SOUTHERN TEXAS               

P:  4FEB2021 130944    31.6N  101.6W 2.0-4.3 BCCAA  SW U.S.A                   

 

O: 08FEB2021 06:48:19  34.4N   97.4W ML=2.3  EMSC   OKLAHOMA

O:  7FEB2021 21:11:20  34.4N   97.4W ML=2.5  EMSC   OKLAHOMA                     

P:  8FEB2021 130962    35.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

HAWAII

 

O:  8FEB2021 06:05:37  19.7N  155.1W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P:  9FEB2021 130889    20.3N  155.1W 4.0-5.7 AAAAA  Hawaii area                

 

NEW GEOMAGNETIC STORM COMES WITH THREE STRONG EARTHQUAKES NEAR EQUATOR

 

EARTHQUAKE SUMMARY FOR FEBRUARY 6, 2021

 

A new geomagnetic storm, the strongest in the past three months, occurred today

maximizing at high latitudes near mid-UT day. This summary noted this event as:

 

"The geomagnetic field saw stormy conditions today. The AP level was 21.  High latitude geomagnetic field saw quiet conditions with AP 31. This appears to continue the strongest geomagnetic storm since AP reached 37 on November 23, 2020 and prior to that September 24-29, 2020. Enhanced seismicity is expected near 90E and 90W longitudes, near the geomagnetic equator and at high latitudes with this storm over the next several days." (February 6, 2021)

 

The three strong earthquakes today occurred near the geomagnetic equator around

90 East longitude with an M 6.3-6.5 in New Guinea; an M 5.3-6.0 in Taiwan and an M 6.0 in Mindanao, Philippines.

 

The strongest earthquake in the world today was an M 6.3-6.5 in Papua New Guinea. NEIC reported it was felt with intensity VII in Madang, PNG. This is the strongest event within about 200 km of this epicenter since an M 6.5 on November 7, 2017 and an M 6.6 on July 31, 2011. Forecast 130839 had expected today's event within about 50 km was likely in early February. The strongest earthquakes in this area in the past 30 years was of M 6.6 in August, 1997 and April, 2005.

 

O:  7FEB2021 05:45:53   3.4S  146.0E Mw=6.5  EMSC   NEAR N COAST OF NEW GUINEA, PN

P:  2FEB2021 130839     3.0S  146.0E 4.0-5.6 BAAAA  New Ireland                

 

The earthquake in New Guinea followed an M 6.0 in Mindanao, Philippines. NEIC reported this earthquake was felt with damage in Southern Mindanao with intensity XI at Bansalan; VI in Goma, Digos, Kidapawan; VI in Kroondal; V in Padada, Davao and Malita and IV in Bato, and Ula, Mindanao, PHIVOLCS reported inentsity VII in M'Lang, Makilala and Kabacan, Cotabato; VI in Isulan, Sultan Kudarat; V in Magasaysay, Dogos City, Hagonoy, Santa Cruz, Sulop, Bansalan and Matanao, Davao Del Sur, Pres. Roxas Arakan, Carmen, Kidapawan City, Matalam and Tulunan, Cotabato, Koronadal City, Banga, Tupi and Tampakan, South Cotabato, Malungon, Sarangani, Columbio, Sultan Kudarat and IV in Davao City and Padada, Davao Del Sur, Antipas, Banisilan, Midsayap, Cotobato, Alabel, Kiamba, Malapatan, Carangani, General Santos City, Noral Polomolok, South Cotabato; Bagumbayan, Esperanza, Lutayan, Palimbang, Pres. Quirino, Sen. Nimoy Aquino, Tacurong City, Sultan Kudarat and Don Carlos Bukidnon. A foreshock of M 4.8 was felt with intensity II-III in Southern Mindanao, Bato, Davao and Panabo.

Another foreshock to the north of M 4.6 was felt with intensity III in Cancocotan, Mindanao. This is probably a regional aftershock of the M 7.0 southwest of this that occurred January 21, 2021. Forecast 130825 had expected this activity was likely around February 7.  This activity is located at 143 degrees from the M 6.7 of December 27, 2020 in Los Lagos, Chile  and was probably promoted by energy concentration from these sources.

 

O: 07FEB2021 04:22:56   6.8N  125.2E Mw=6.0  EMSC   MINDANAO, PHILIPPINES

O: 06FEB2021 10:21:10   7.5N  126.7E mb=4.6  EMSC   MINDANAO, PHILIPPINES

O:  6FEB2021 23:28:53   6.8N  125.1E mb=4.8  EMSC   MINDANAO, PHILIPPINES        

P:  7FEB2021 130825     5.0N  126.0E 4.0-5.3 ABAAA  Mindanao, Philippines      

 

An earthquake of M 5.3-6.0 also occurred northeast of Taiwan today.

NEIC reported this earthquake of M 5.4 in Taiwan was felt with intensity II-III in the area(s) of Taiwan at Taipei, Taoyuan, Hsinchu, and Chiayi. CWB reported this earthquake at M 6.0 was felt with intensity IV in Yilan and Miaoli; III in Hualien, Taipei, Taoyuan, Hsinchu, III in Taipei, Taichung, Nantou, Taitung, Changhua, Yunlin, Chiayi, and I in Kaohsiung Counties, Taiwan. This earthquake occurred near local solar midnight and may have been promoted by tidal and/or geomagnetic effects which maximize at this hour. The last earthquake within about 150 km of this epicenter with M>=6 was an M  6.1 on December 10, 2020. An M 6.1 also hit the area on April 17, 2019. The last of significantly larger event was an M 6.4 on February 6, 2018 exactly three years ago. Forecast 130902 had expected today's event within about 50 km was likely in Taiwan around February 4. This activity is located at 144 degrees from the M 6.7 in the West Chile Rise of February 3, 2021 and the M 7.1 of January 23, 2021 in the South Shetland Islands and was probably promoted by energy concentration from these sources.

 

O:  6FEB2021 17:36:02  24.7N  122.6E mb=5.3  EMSC   TAIWAN REGION                

O:  6FEB2021 17:36:03  24.7N  122.6E ML=6.0  TAI    Hualien, Taiwan              

P:  4FEB2021 130902    24.0N  123.0E 4.0-5.6 AAAAA  Taiwan                     

 

The strongest earthquake in the U.S. or Canada today was an M 4.9 in the western Alaska Peninsula. The last earthquakes within about 150 km of this epicenter of M>=4.9 occurred on January 24, 2021 with M 5.1 and before that an M 5.3 on December 16, 2020. Forecast 131035 had expected today's event within about 10  km was likely around February 4.  This activity is located at 143 degrees from the M 7.1 of January 23, 2021 in the South Shetland Islands and was probably promoted by energy concentration from these sources.

 

O:  6FEB2021 18:39:50  54.7N  161.2W mb=4.9  EMSC   ALASKA PENINSULA             

P:  4FEB2021 131035    54.7N  161.2W 3.5-5.1 AAAAA  Unimak Islands, Aleutians  

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O:  6FEB2021 10:27:23  22.6N  121.0E ML=4.2  EMSC   TAIWAN REGION                

P:  6FEB2021 130901    22.0N  121.0E 4.0-5.3 AAAAA  Taiwan                     

 

O:  6FEB2021 16:10:04  52.5N  106.7E mb=4.4  EMSC   LAKE BAYKAL REGION, RUSSIA   

P:  4FEB2021 131031    56.0N  110.0E 3.0-4.7 ACBAA  So. Siberia                

 

NEIC reported this earthquake of M 4.4 in Lake Baykal, Russia was felt with intensity II-III in the area(s) of Lake Baykal, Russia at Ulan-UDe Burjatija and in Irkutsk, Russia.

 

O:  6FEB2021 14:54:28  38.6N   93.8E mb=4.5  EMSC   NORTHERN QINGHAI, CHINA      

P:  7FEB2021 130955    38.0N   97.0E 3.5-4.9 AACAA  So. China                  

 

O:  6FEB2021 17:36:02  24.7N  122.6E mb=5.3  EMSC   TAIWAN REGION                

O:  6FEB2021 17:36:03  24.7N  122.6E ML=6.0  TAI    Hualien, Taiwan              

P:  4FEB2021 130902    24.0N  123.0E 4.0-5.6 AAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity IV in Yilan and Miaoli; III in Hualien, Taipei, Taoyuan, Hsinchu, III in Taipei, Taichung, Nantou, Taitung, Changhua, Yunlin, Chiayi, and I in Kaohsiung Counties, Taiwan.

 

INDONESIA AND PHILIPPINES

 

O:  7FEB2021 05:45:53   3.4S  146.0E Mw=6.5  EMSC   NEAR N COAST OF NEW GUINEA, PN

P:  2FEB2021 130839     3.0S  146.0E 4.0-5.6 BAAAA  New Ireland                

 

O:  6FEB2021 07:36:29   4.8S  129.8E ML=4.4  EMSC   BANDA SEA                    

P:  8FEB2021 130851     3.0S  130.0E 4.0-5.4 ABAAA  West Irian, PNG            

 

O:  6FEB2021 14:18:24   8.2S  118.3E ML=4.3  EMSC   SUMBAWA REGION, INDONESIA    

P:  8FEB2021 130850     8.0S  118.0E 4.0-5.4 AAAAA  Sumbawa Island area        

 

O: 07FEB2021 04:22:56   6.8N  125.2E Mw=6.0  EMSC   MINDANAO, PHILIPPINES

O: 06FEB2021 10:21:10   7.5N  126.7E mb=4.6  EMSC   MINDANAO, PHILIPPINES

O:  6FEB2021 23:28:53   6.8N  125.1E mb=4.8  EMSC   MINDANAO, PHILIPPINES        

P:  7FEB2021 130825     5.0N  126.0E 4.0-5.3 ABAAA  Mindanao, Philippines      

 

CENTRAL AND SOUTH AMERICA

 

O:  6FEB2021 07:43:15   4.2N   82.6W mb=4.6  EMSC   SOUTH OF PANAMA              

P:  9FEB2021 130820     5.0N   83.0W 3.5-5.1 BAAAA  Costa Rica                 

 

O:  6FEB2021 22:39:30  10.4N   86.2W ML=4.1  EMSC   OFF COAST OF COSTA RICA      

P:  3FEB2021 130874    12.0N   86.0W 3.5-5.6 BBAAA  Nicaragua                  

 

O:  6FEB2021 07:41:56  13.7N   90.5W mb=4.3  EMSC   OFFSHORE GUATEMALA           

P:  5FEB2021 130861    14.0N   90.0W 3.5-5.3 AAAAA  Guatemala                  

 

O:  6FEB2021 12:23:10  15.6N   94.8W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO      

P:  6FEB2021 130859    18.0N   95.0W 3.5-5.2 ACAAA  Chiapas, Mexico            

 

O:  6FEB2021 17:48:28  16.4N   98.5W ML=4.0  EMSC   GUERRERO, MEXICO             

P:  7FEB2021 130877    16.0N   99.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O:  6FEB2021 14:57:42  19.9S   71.1W ML=4.0  EMSC   OFF COAST OF TARAPACA, CHILE 

P:  9FEB2021 131084    20.0S   70.0W 4.0-5.4 BAAAA  So. Peru/Bolivia            

 

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

 

O:  6FEB2021 16:09:48  20.8S   65.7W ML=4.2  EMSC   POTOSI, BOLIVIA              

P:  9FEB2021 131077    21.0S   67.0W 4.0-5.3 BAAAA  Argentina                  

 

O:  7FEB2021 06:10:38  21.0S   69.2W mb=4.2  EMSC   TARAPACA, CHILE              

P:  2FEB2021 131079    22.0S   69.0W 4.0-5.6 BAAAA  Coast No. Chile            

 

O:  7FEB2021 05:06:36  18.1N   72.1W ML=3.6  EMSC   HAITI REGION                 

P:  4FEB2021 130886    20.0N   71.0W 3.0-4.6 BBAAA  Bahamas/No. Caribbean      

 

 

O: 06FEB2021 10:38:52  18.9N   65.1W Md=3.4  EMSC   VIRGIN ISLANDS REGION

O: 06FEB2021 11:52:07  18.9N   65.4W Md=3.0  EMSC   PUERTO RICO REGION

O: 06FEB2021 12:46:00  19.0N   65.0W Md=3.1  EMSC   VIRGIN ISLANDS REGION

O: 06FEB2021 07:05:03  19.1N   64.9W mb=5.1  EMSC   VIRGIN ISLANDS REGION

O: 06FEB2021 07:11:16  19.1N   64.8W ML=3.8  EMSC   VIRGIN ISLANDS REGION

O: 06FEB2021 07:14:08  19.1N   64.8W ML=3.4  EMSC   VIRGIN ISLANDS REGION

O: 06FEB2021 07:52:55  19.1N   64.7W ML=3.0  EMSC   VIRGIN ISLANDS REGION

O: 06FEB2021 14:12:13  19.1N   64.8W Md=3.2  EMSC   VIRGIN ISLANDS REGION

O: 06FEB2021 08:50:34  19.2N   64.7W Md=3.4  EMSC   VIRGIN ISLANDS REGION

O: 06FEB2021 12:40:17  19.2N   64.9W mb=4.1  EMSC   VIRGIN ISLANDS REGION

O: 06FEB2021 22:15:00  19.2N   64.8W ML=3.0  EMSC   VIRGIN ISLANDS REGION

O:  6FEB2021 12:12:19  19.3N   64.9W ML=3.0  EMSC   VIRGIN ISLANDS REGION        

P:  4FEB2021 130885    20.0N   64.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

O: 06FEB2021 14:48:35  15.5N   96.8W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO

O: 06FEB2021 16:58:15  15.5N   96.8W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O:  6FEB2021 14:40:19  15.4N   96.8W ML=4.3  EMSC   OFFSHORE OAXACA, MEXICO      

P:  4FEB2021 130877    15.0N   96.0W 3.5-5.1 AAAAA  Oaxaca, Mexico             

 

AFRICA AND EUROPE

 

O:  6FEB2021 16:14:49  22.2N   34.6E ML=4.2  EMSC   EGYPT                        

P:  6FEB2021 130883    19.0N   39.0E 3.0-5.1 ACCAA  Sudan                      

 

O:  6FEB2021 20:49:43  37.2N    3.8W ML=2.8  EMSC   SPAIN                        

P:  4FEB2021 130926    37.0N    3.0W 3.5-5.1 AAAAA  Morocco/Spain              

 

O:  6FEB2021 16:09:15  38.9N   26.1E ML=4.1  EMSC   NEAR THE COAST OF WESTERN TURK

O: 06FEB2021 18:22:48  38.9N   26.1E Mw=4.0  EMSC   NEAR THE COAST OF WESTERN TURKEY

P:  3FEB2021 130904    38.0N   26.0E 3.0-4.6 BAAAA  Aegean Sea                 

 

O:  6FEB2021 17:26:35  45.7N   40.0E mb=4.0  EMSC   SOUTHWESTERN RUSSIA          

P:  7FEB2021 130973    40.0N   41.0E 3.5-4.8 ACAAA  Caucasus/Caspian Sea       

 

O:  6FEB2021 12:50:28  38.8N   29.4W ML=3.2  EMSC   AZORES ISLANDS, PORTUGAL     

P:  1FEB2021 130936    38.0N   32.0W 4.0-5.6 BABAA  No. Mid-Atlantic Ridge     

 

SOUTHWEST PACIFIC

 

O:  7FEB2021 02:25:08  17.2S  174.3W mb=4.9  EMSC   TONGA                        

P:  7FEB2021 131072    17.0S  174.0W 4.0-5.6 AAAAA  Tonga Islands              

 

O:  7FEB2021 01:56:52  20.8S  177.6W Mw=5.1  EMSC   FIJI REGION                  

P:  7FEB2021 131085    20.0S  175.0W 4.0-5.5 AABAA  Tonga Islands              

 

O:  7FEB2021 02:58:19  22.8S  172.0E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P:  6FEB2021 131080    23.0S  169.0E 4.0-5.4 AABAA  Loyalty Islands            

 

OCEAN RIDGES

 

O:  7FEB2021 04:04:43  54.7S  136.0W mb=5.0  EMSC   PACIFIC-ANTARCTIC RIDGE      

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  6FEB2021 13:07:14  32.9S  180.0E ML=4.1  EMSC   SOUTH OF KERMADEC ISLANDS    

O:  6FEB2021 23:37:19  33.3S  177.2E ML=4.0  EMSC   NORTH OF NEW ZEALAND         

P:  4FEB2021 131100    33.0S  178.0E 4.0-5.4 AAAAA  So. Kermadec Islands       

 

O:  7FEB2021 00:27:56  35.2S  179.4E ML=3.8  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P:  2FEB2021 131096    35.0S  179.0E 3.0-4.7 BAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O:  7FEB2021 00:53:52  24.0N  126.0E mb=4.3  EMSC   RYUKYU ISLANDS, JAPAN        

P:  1FEB2021 130902    24.0N  125.0E 4.0-5.3 CAAAA  Taiwan                      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  7FEB2021 00:25:46  33.2N  116.0W ML=2.6  EMSC   SOUTHERN CALIFORNIA          

P: 10FEB2021 130948    33.0N  115.9W 2.5-4.6 BAAAA  So. California             

 

O:  6FEB2021 08:30:48  35.5N  118.3W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P:  8FEB2021 130954    35.9N  117.7W 2.5-4.3 AAAAA  So. California             

 

O:  6FEB2021 17:00:22  35.5N  119.3W ML=2.2  EMSC   CENTRAL CALIFORNIA           

P:  6FEB2021 130952    33.8N  119.7W 2.5-4.6 ABAAA  So. California             

 

O:  6FEB2021 23:04:52  36.0N  120.6W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P: 10FEB2021 130910    36.6N  120.7W 2.5-5.1 BAAAA  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 at San Miguel.

 

O:  6FEB2021 21:07:37  36.2N  118.0W ML=2.1  EMSC   CENTRAL CALIFORNIA           

P:  4FEB2021 130954    35.8N  117.6W 2.5-4.3 AAAAA  So. California              

P:  8FEB2021 130954    35.9N  117.7W 2.5-4.3 AAAAA  So. California             

 

O:  6FEB2021 08:00:08  36.7N  121.4W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P:  9FEB2021 130910    36.8N  121.3W 2.5-5.1 BAAAA  Central California         

 

 

O: 06FEB2021 23:23:04  38.2N  118.1W ML=2.6  EMSC   NEVADA

O: 07FEB2021 01:57:19  38.2N  118.1W ML=3.0  EMSC   NEVADA

O:  6FEB2021 23:10:16  38.2N  118.1W ML=3.5  EMSC   NEVADA                       

P:  7FEB2021 130907    37.9N  118.2W 2.5-4.5 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.5 in Nevada was felt with intensity II-III in the area(s) of Nevada at Hawthorne.

 

ALASKA

 

O:  7FEB2021 03:32:50  53.6N  165.8W ML=3.2  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  8FEB2021 131034    54.2N  165.0W 3.5-5.0 AAAAA  Unimak Islands, Aleutians  

 

O:  6FEB2021 18:39:50  54.7N  161.2W mb=4.9  EMSC   ALASKA PENINSULA             

P:  4FEB2021 131035    54.7N  161.2W 3.5-5.1 AAAAA  Unimak Islands, Aleutians  

 

O:  7FEB2021 01:20:59  55.2N  159.1W ML=3.5  EMSC   ALASKA PENINSULA             

P:  7FEB2021 131033    55.0N  160.0W 3.0-4.6 AAAAA  Alaska Peninsula           

 

O:  7FEB2021 04:49:04  56.0N  157.1W ML=3.4  EMSC   ALASKA PENINSULA             

P:  5FEB2021 131033    56.0N  156.0W 3.0-4.6 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

 

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

 

EASTERN U.S./CANADA

 

O:  6FEB2021 19:13:36  34.4N   97.4W ML=2.2  EMSC   OKLAHOMA                     

P:  8FEB2021 130962    35.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 06FEB2021 10:01:27  36.3N   97.5W Mw=3.5  EMSC   OKLAHOMA

O:  6FEB2021 07:26:56  36.3N   97.5W ML=2.0  EMSC   OKLAHOMA                     

P:  4FEB2021 130962    37.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.7 in Oklahoma was felt with intensity II-III in the area(s) of Oklahoma at Covington and Enid.

 

HAWAII

 

O:  6FEB2021 09:48:47  19.3N  155.9W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P:  5FEB2021 130864    19.2N  155.2W 3.0-4.5 AAAAA  Hawaii