UNUSUAL QUAKE IN NORTHERN QINGHAI, CHINA

 

EARTHQUAKE SUMMARY FOR JUNE 16, 2021

 

The strongest earthquake in the world today was an M 5.4 in northern Qinghai, China. It was not reported felt in this region. It is not a classical aftershock of the M 7.5 in Qinghai of May 21 as it occurred about 600 km northwest of that epicenter. It was probably promoted by regional stress redistribution from the May 21 event, however. Today's event is the strongest earthquake within about 300 km of today's epicenter since an M 5.6 on November 4, 2009 about 300 km  to the southeast of the epicenter today. It is the strongest event within about 200 km of the epicenter in at least 30 years. Forecasts 134692 and 124703 had expected a moderately large earthquake in this region was possible in mid-June.

 

O: 16JUN2021 08:48:58  38.2N   93.8E Mw=5.4  EMSC   NORTHERN QINGHAI, CHINA      

P: 14JUN2021 134692    38.0N   97.0E 3.5-5.1 AACAA  So. China                  

P: 19JUN2021 134703    36.0N   93.0E 3.8-5.5 BCAAA  Xizang                      

 

A series of light earthquakes occurred today in the eastern U.S. and Canada.

These were located in Arkansas, Tennessee, Virginia, North Carolina, Ontario, and Quebec - all with M 2-3. This activity may have been enhanced by effects related to the recent solar eclipse which was visible in these areas on June 10; the current geomagnetic storm, the strongest in nearly a month and/or effects of Tropical Storm Bill which has passed east of the U.S. East Coast over the past several days as noted in previous issues of this report as:

 

 

"TS Bill formed today in the region east of Virginia with winds up to 45 kts. It is expected to track to the northeast over the next several days following the coastline of North America. Some regional seismic enhancement in eastern U.S. may accompany this storm" (June 14-16, 2021)

 

This summary has previously noted the current geomagnetic storm possible effects on seismicity as:

 

"The geomagnetic field saw active conditions today. The AP level was 17.  High latitude geomagnetic field also saw active conditions with AP 21. This is the strongest geomagnetic storm in nearly a month since AP reached 24 on May 20. This was followed the next day by the M 7.4 in Qinghai, China, the last major earthquake in the world. Geomagnetic storms of this size are often associated with enhanced global seismicity especially near the geomagnetic equator and at high latitudes and this is likely in the next several days." (June 16, 2021)

 

O: 16JUN2021 07:16:54  36.2N   91.6W Md=2.1  EMSC   ARKANSAS                     

P: 15JUN2021 134667    35.0N   92.0W 2.0-4.2 ABAAA  New Madrid area            

 

O: 16JUN2021 08:01:21  36.3N   89.5W Md=2.0  EMSC   TENNESSEE                    

P: 17JUN2021 134667    36.9N   89.2W 2.0-4.0 AAAAA  New Madrid area            

 

O: 16JUN2021 13:24:31  35.5N   84.9W Md=2.1  EMSC   EASTERN TENNESSEE            

P: 15JUN2021 134663    35.0N   84.0W 2.0-4.1 AAAAA  Kentucky/Tennessee/NC      

 

O: 16JUN2021 09:19:36  36.7N   81.1W Md=2.0  EMSC   VIRGINIA-N CAROLINA BORDER REG

O: 17JUN2021 02:43:10  36.7N   81.1W Md=2.3  EMSC   VIRGINIA-N CAROLINA BORDER REG

P: 16JUN2021 134663    37.2N   81.9W 2.0-3.9 AAAAA  Kentucky/Tennessee/NC      

 

O: 17JUN2021 03:08:23  50.1N   90.4W MB=2.7  ECAN Allanwater Bridge, ON           

 

O: 16JUN2021 08:58:48  49.1N   67.6W MB=1.6  ECAN Matane, QC                     

P:  8JUN2021 134443    47.0N   70.0W 2.0-3.9 CCBAA  Maine                      

 

O: 15JUN2021 10:29:19  44.8N   74.8W MB=2.6  ECAN Cornwall, ON                   

P: 15JUN2021 134723    45.7N   75.2W 2.0-4.3 AAAAA  New York State             

 

The increased seismicity in the Virgin Islands, Puerto Rico and the Dominican Republic continued today. Earthquakes of M 3.9 and 4.4 occurred in the Virgin Islands. Forecast 134613 had expected this activity within about 100 km around June 15. This regionally enhanced seismicity is likely for several more days.

 

NEIC reported this earthquake of M 4.2-4.4 in the Virgin Islands was felt with intensity II-III in the area(s) of the Virgin Islands at Saint Thomas.

 

O: 16JUN2021 13:00:19  19.6N   64.8W Md=3.9  EMSC   VIRGIN ISLANDS REGION

O: 16JUN2021 12:52:31  19.3N   64.9W mb=4.4  EMSC   VIRGIN ISLANDS REGION        

P: 15JUN2021 134613    19.0N   64.0W 3.0-5.1 AAAAA  Leeward Islands            

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 16JUN2021 09:27:42  24.8N  122.3E ML=4.6  TAI    Hualien, Taiwan              

P: 16JUN2021 134644    24.0N  122.0E 4.0-5.6 AAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity I in Yilan, Hualien, Hsinchu and Nantou Counties, Taiwan.

 

 

O: 16JUN2021 08:48:58  38.2N   93.8E Mw=5.4  EMSC   NORTHERN QINGHAI, CHINA      

P: 14JUN2021 134692    38.0N   97.0E 3.5-5.1 AACAA  So. China                  

P: 19JUN2021 134703    36.0N   93.0E 3.8-5.5 BCAAA  Xizang                     

 

O: 17JUN2021 00:41:49  51.4N  100.4E mb=4.1  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 17JUN2021 134758    51.0N   98.0E 3.0-4.4 AABAA  So. Siberia                

 

INDONESIA AND PHILIPPINES

 

 

O: 17JUN2021 04:44:29   0.6N  126.7E ML=4.6  EMSC   MOLUCCA SEA                  

P: 17JUN2021 134572     0.0N  126.0E 4.0-5.4 AAAAA  Mindanao, Philippines      

 

O: 16JUN2021 11:05:55   4.7S  130.7E ML=4.2  EMSC   BANDA SEA                    

P: 15JUN2021 134602     5.0S  131.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O: 16JUN2021 20:09:42   5.9S  150.8E mb=5.0  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 13JUN2021 134588     5.0S  151.0E 4.0-5.4 BAAAA  New Ireland                

P: 17JUN2021 134588     4.0S  151.0E 4.0-5.4 ABAAA  New Ireland                

 

NEIC reported this earthquake of M 5.0 in New Britain, PNG was felt with intensity II-III in the area(s) of New Britain, PNG at Kimbe.

 

O: 16JUN2021 22:19:15  10.1N  126.1E mb=4.6  EMSC   PHILIPPINE ISLANDS REGION

O: 16JUN2021 16:42:42  10.2N  126.3E ML=4.2  EMSC   PHILIPPINE ISLANDS REGION

O: 16JUN2021 18:35:29  10.1N  126.1E mb=4.4  EMSC   PHILIPPINE ISLANDS REGION    

P: 17JUN2021 134614    11.0N  126.0E 3.5-4.9 AAAAA  Luzon, Philippines         

 

CENTRAL AND SOUTH AMERICA

 

 

O: 16JUN2021 17:20:37  16.6N   94.8W ML=4.0  EMSC   OAXACA, MEXICO

O: 16JUN2021 14:30:55  15.4N   94.8W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13JUN2021 134606    15.0N   94.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O: 16JUN2021 18:17:15  16.4N   99.0W ML=4.5  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 18JUN2021 134623    17.0N   98.0W 3.5-5.2 AAAAA  Oaxaca, Mexico             

 

O: 16JUN2021 09:55:29  17.9N   67.0W Md=3.0  EMSC   PUERTO RICO REGION           

P: 16JUN2021 134625    18.0N   67.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 16JUN2021 14:49:54  18.2N   74.1W ML=3.2  EMSC   HAITI REGION                 

P: 17JUN2021 134630    20.0N   71.0W 3.0-4.5 ABCAA  Bahamas/No. Caribbean      

 

O: 17JUN2021 02:15:14  18.6N   68.1W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION

O: 17JUN2021 02:28:36  18.8N   68.1W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION

O: 16JUN2021 14:40:00  19.0N   68.2W Md=3.6  EMSC   DOMINICAN REPUBLIC REGION

O: 16JUN2021 20:20:18  19.1N   68.3W Md=3.1  EMSC   DOMINICAN REPUBLIC REGION

O: 17JUN2021 01:56:52  19.1N   68.2W Md=3.4  EMSC   DOMINICAN REPUBLIC REGION

O: 16JUN2021 14:03:14  18.4N   69.1W ML=3.3  EMSC   DOMINICAN REPUBLIC           

P: 18JUN2021 134630    20.0N   69.0W 3.0-4.9 ABAAA  Bahamas/No. Caribbean      

P: 19JUN2021 134625    18.0N   69.0W 3.4-5.4 BAAAA  Puerto Rico                

 

 

O: 17JUN2021 04:43:51  17.9N   67.0W Md=3.2  EMSC   PUERTO RICO REGION

O: 16JUN2021 17:02:46  18.6N   68.1W ML=3.0  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P: 15JUN2021 134625    19.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                 

 

 

O: 16JUN2021 13:00:19  19.6N   64.8W Md=3.9  EMSC   VIRGIN ISLANDS REGION

O: 16JUN2021 12:52:31  19.3N   64.9W mb=4.4  EMSC   VIRGIN ISLANDS REGION        

P: 15JUN2021 134613    19.0N   64.0W 3.0-5.1 AAAAA  Leeward Islands            

 

O: 17JUN2021 02:44:44  24.0S   66.9W mb=4.5  EMSC   SALTA, ARGENTINA             

P: 19JUN2021 134796    24.0S   69.0W 4.0-5.4 AABAA  Coast No. Chile            

 

O: 16JUN2021 20:13:26  33.3S   71.7W mb=4.7  EMSC   VALPARAISO, CHILE            

O: 16JUN2021 20:13     33.3S   71.7W mb=4.4  GUC    Valparaiso at Cartagena, Casab

P: 17JUN2021 134805    33.0S   68.0W 4.0-5.8 AACAA  Central Chile              

 

 

NEIC reported this earthquake of M 4.7 in Valparaiso, Chile was felt with intensity VI-VII in the area(s) of Valparaiso, Chile at San Anonio, Valpaaiso, Quilpue, Vina del Mar; V in Quillota; IV in Santiago and II in Rancagua, O'Higgins.

GUC reported this earthquake was felt with intensity V in  Valparaiso at Cartagena, Casablanca, Concon, Quintero, Valparaiso, Villa Alemana and Vina del Mar; IV in El Quisco, El Tabo, Quilpue, and III in Catemu, Llaillay, San Antonio, San Felipe, Santo Domingo; in Santiago with III in El Monte, Pedr Aguirre, Santiago and II in Lo Barnechea and Mepilla and II in O'Higgins at Rancagua, Chile.

 

AFRICA AND EUROPE

 

O: 17JUN2021 00:35:15  35.6N   24.9E mb=4.3  EMSC   CRETE, GREECE                

P: 14JUN2021 134661    34.0N   25.0E 3.0-4.7 BBAAA  Crete                      

P: 18JUN2021 134646    35.0N   23.0E 3.0-4.8 AABAA  Aegean Sea                 

 

O: 16JUN2021 13:22:08  51.6N   16.1E ML=3.8  EMSC   POLAND                       

P: 15JUN2021 134754    51.0N   16.0E 3.0-4.6 AAAAA  Poland                     

 

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

 

SOUTHWEST PACIFIC

 

O: 16JUN2021 17:20:51  17.8S  178.4W mb=4.4  EMSC   FIJI REGION                  

P: 18JUN2021 134791    18.0S  178.0W 4.0-5.8 AAAAA  Tonga Islands              

 

O: 17JUN2021 00:41:19  20.3S  178.0W mb=4.4  EMSC   FIJI REGION                  

P: 18JUN2021 134803    21.0S  179.0W 4.0-5.8 AAAAA  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

 

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

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 17JUN2021 05:44:30  31.0N  115.3W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO      

P: 16JUN2021 134680    31.7N  115.3W 2.5-4.4 AAAAA  So. California             

 

O: 17JUN2021 02:40:15  32.0N  116.2W ML=2.8  EMSC   BAJA CALIFORNIA, MEXICO

O: 17JUN2021 02:42:02  32.0N  116.2W Ml=2.2  EMSC   BAJA CALIFORNIA, MEXICO

O: 17JUN2021 02:50:37  32.0N  116.2W Ml=2.2  EMSC   BAJA CALIFORNIA, MEXICO

O: 17JUN2021 05:41:58  32.4N  116.0W Ml=2.3  EMSC   BAJA CALIFORNIA, MEXICO      

O: 17JUN2021 04:55:15  32.7N  115.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 15JUN2021 134680    32.7N  115.6W 2.5-4.4 AAAAA  So. California             

 

O: 16JUN2021 12:00:57  33.3N  116.2W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 16JUN2021 12:54:40  33.2N  116.4W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 18JUN2021 134683    33.4N  116.7W 2.5-4.6 AAAAA  So. California             

 

O: 16JUN2021 23:41:09  35.7N  117.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 18JUN2021 134691    35.9N  117.7W 2.5-5.0 AAAAA  So. California             

 

O: 16JUN2021 16:36:33  36.0N  117.8W Ml=2.4  EMSC   CENTRAL CALIFORNIA

O: 16JUN2021 17:51:59  36.0N  117.8W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 16JUN2021 08:50:18  35.9N  117.7W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P: 16JUN2021 134647    36.2N  117.9W 2.5-4.9 AAAAA  California/Nevada area     

 

O: 16JUN2021 18:17:06  36.4N  117.9W ML=2.5  EMSC   CENTRAL CALIFORNIA           

O: 16JUN2021 17:44:54  36.5N  117.9W Mw=3.4  EMSC   CENTRAL CALIFORNIA

P: 14JUN2021 134648    36.5N  117.8W 2.5-4.9 AAAAA  California/Nevada area     

 

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

 

O: 17JUN2021 00:23:32  38.8N  122.4W Md=2.3  EMSC   NORTHERN CALIFORNIA

O: 16JUN2021 07:49:33  38.5N  122.4W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 14JUN2021 134657    38.7N  122.7W 2.5-4.4 AAAAA  Central California         

 

O: 17JUN2021 01:11:14  39.3N  122.8W Md=2.8  EMSC   NORTHERN CALIFORNIA          

P: 16JUN2021 134658    39.3N  123.2W 2.5-4.6 AAAAA  Central California         

 

O: 17JUN2021 03:29:04  39.5N  120.3W ml=2.3  EMSC   NORTHERN CALIFORNIA          

O: 17JUN2021 03:29:04  39.5N  120.3W ml=2.6  ANSS   NORTHERN CALIFORNIA           

P: 19JUN2021 134659    39.4N  120.5W 2.5-4.6 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 at Sierra City and in Glenbrook, Nevada.

 

O: 17JUN2021 06:18:56  40.2N  124.6W Md=2.6  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 14JUN2021 134727    40.2N  124.2W 2.5-4.6 BAAAA  Off Coast of No. Calif     

 

 

NEIC reported an earthquake of M 2.6 in Central California was felt with intensity II-III in the area(s) of Central California at Salinas, Watsonville, Morgan Hill and Los Banos.

 

ALASKA

 

O: 17JUN2021 04:09:17  62.8N  150.5W ml=3.0  EMSC   CENTRAL ALASKA               

P: 18JUN2021 134770    62.9N  150.2W 3.2-5.1 AAAAA  Central Alaska             

 

O: 17JUN2021 00:04:47  51.4N  171.1W mb=3.8  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 19JUN2021 134750    52.5N  169.2W 3.5-4.9 ABBAA  Fox Islands, Aleutians     

 

O: 16JUN2021 18:14:11  53.6N  163.6W mb=3.7  EMSC   UNIMAK ISLAND REGION, ALASKA 

P: 16JUN2021 134760    54.2N  162.5W 3.5-5.1 AAAAA  Unimak Islands, Aleutians  

 

O: 16JUN2021 12:00:22  58.0N  151.7W ml=3.0  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 14JUN2021 134764    60.1N  150.6W 3.2-5.3 ABAAA  Central Alaska             

 

O: 16JUN2021 14:56:25  59.0N  135.9W ml=3.0  EMSC   SOUTHEASTERN ALASKA          

P: 15JUN2021 134759    59.0N  137.0W 3.0-4.8 AAAAA  Southeast Alaska           

 

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

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 16JUN2021 18:55:53  46.3N  119.4W ML=2.3  EMSC   WASHINGTON                   

P: 19JUN2021 134740    47.7N  120.3W 2.0-3.9 BBAAA  Washington state, U.S.      

 

O: 16JUN2021 16:25:28  49.3N  122.5W Ml=2.6  EMSC   BRITISH COLUMBIA, CANADA     

O: 16JUN2021 21:16:48  49.4N  120.6W Ml=2.0  EMSC   BRITISH COLUMBIA, CANADA     

P: 15JUN2021 134740    48.9N  122.1W 2.0-4.0 AAAAA  Washington state, U.S.     

 

NEIC reported this earthquake of M 2.6 in British Columbia was felt with intensity II-III in the area(s) of British Columbia at Walnut Grove.

 

ROCKY MOUNTAINS REGION

 

O: 16JUN2021 10:06:52  32.4N  102.1W mb=2.8  EMSC   WESTERN TEXAS                

O: 17JUN2021 06:07:41  32.4N  102.1W mb=3.0  EMSC   WESTERN TEXAS                

P: 17JUN2021 134677    31.6N  103.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

O: 16JUN2021 09:25:09  39.5N  110.4W ML=2.2  EMSC   UTAH                         

P: 14JUN2021 134699    40.0N  111.6W 2.0-4.0 AAAAA  Utah area                  

 

O: 16JUN2021 16:13:49  44.3N  115.2W Ml=2.0  EMSC   SOUTHERN IDAHO               

P: 17JUN2021 134717    44.6N  115.0W 2.0-4.0 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 16JUN2021 08:03:35  34.4N   97.4W ML=2.1  EMSC   OKLAHOMA                     

O: 16JUN2021 18:18:26  35.1N   95.4W ML=2.7  EMSC   OKLAHOMA                     

P: 19JUN2021 134695    35.0N   97.0W 2.0-4.3 BAAAA  Southern Plains            

 

O: 16JUN2021 21:25:20  35.8N   97.0W ML=2.2  EMSC   OKLAHOMA

O: 16JUN2021 21:58:12  35.8N   97.0W mb=2.5  EMSC   OKLAHOMA

O: 16JUN2021 21:07:32  35.8N   97.0W mb=3.7  EMSC   OKLAHOMA                     

P: 14JUN2021 134696    36.0N   97.0W 2.0-4.2 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 Carney. The M 3.7 was felt with intensity V in Carney; IV in Apia, Chandler, Ripley and III in Tryon, Wellston, Luther, Stroud, Hester and Cushing.

 

O: 16JUN2021 07:16:54  36.2N   91.6W Md=2.1  EMSC   ARKANSAS                     

P: 15JUN2021 134667    35.0N   92.0W 2.0-4.2 ABAAA  New Madrid area            

 

O: 16JUN2021 08:01:21  36.3N   89.5W Md=2.0  EMSC   TENNESSEE                     

P: 17JUN2021 134667    36.9N   89.2W 2.0-4.0 AAAAA  New Madrid area            

 

O: 16JUN2021 13:24:31  35.5N   84.9W Md=2.1  EMSC   EASTERN TENNESSEE            

P: 15JUN2021 134663    35.0N   84.0W 2.0-4.1 AAAAA  Kentucky/Tennessee/NC       

 

O: 16JUN2021 09:19:36  36.7N   81.1W Md=2.0  EMSC   VIRGINIA-N CAROLINA BORDER REG

O: 17JUN2021 02:43:10  36.7N   81.1W Md=2.3  EMSC   VIRGINIA-N CAROLINA BORDER REG

P: 16JUN2021 134663    37.2N   81.9W 2.0-3.9 AAAAA  Kentucky/Tennessee/NC      

 

O: 17JUN2021 03:08:23  50.1N   90.4W MB=2.7  ECAN Allanwater Bridge, ON          

 

O: 16JUN2021 08:58:48  49.1N   67.6W MB=1.6  ECAN Matane, QC                     

P:  8JUN2021 134443    47.0N   70.0W 2.0-3.9 CCBAA  Maine                      

 

O: 15JUN2021 10:29:19  44.8N   74.8W MB=2.6  ECAN Cornwall, ON                   

P: 15JUN2021 134723    45.7N   75.2W 2.0-4.3 AAAAA  New York State             

 

O: 15JUN2021 08:29:59  50.0N   60.8W MB=2.1  ECAN La Romaine, QC                 

 

HAWAII

 

O: 16JUN2021 23:56:54  19.2N  155.5W ML=3.6  EMSC   ISLAND OF HAWAII, HAWAII     

P: 17JUN2021 134611    18.8N  155.2W 3.0-4.4 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.5 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Naalehu, Volcano, Hilo, Mountain View, Kurtistown, Paauilo, Kamuela and Honolaa.

 

STRONG SERAM, INDONESIA STRIKES WITH NEW GEOMAGNETIC STORM

 

EARTHQUAKE SUMMARY FOR JUNE 15, 2021

 

An earthquake of M 5.8-6.1 shook regions of the Banda Sea, Indonesia today. NEIC reported it was felt with intensity VI in Amahai, Maluku, Indonesia.

BMG reported this event with M 6.1 was felt with intensity III in Tehoru, Masohi, Bula, Kairatu and Ambon, Indonesia. This event occurred as the strongest geomagnetic storm of the month occurred and reached its maximum intensity. As it is located near the geomagnetic equator and occurred near local solar noon, it is likely this was promoted by effects associated with this geomagnetic storm which are described in this summary as:

 

"The geomagnetic field saw active conditions today. The AP level was 17.  High latitude geomagnetic field also saw active conditions with AP 21. This is the strongest geomagnetic storm in nearly a month since AP reached 24 on May 20. This was followed the next day by the M 7.4 in Qinghai, China, the last major earthquake in the world. Geomagnetic storms of this size are often associated with enhanced global seismicity especially near the geomagnetic equator and at high latitudes and this is likely in the next several days." (June 16, 2021)

 

Two earthquake have occurred within about 250 km of this epicenter with M>=5.8 in the past year - an M 5.9 on April 3, 2021 and an M 5.9 on September 8, 2020. The last of magnitude larger than M 6.1 in this area was an M 6.5 on Septembere 25, 2019. Forecast 134581 had expected today's earthquake within about 100 km of this epicenter was likely around June 13.

 

O: 16JUN2021 04:43:08   3.5S  129.5E Mw=5.8  EMSC   SERAM, INDONESIA             

O: 16JUN2021 04:43:08   3.5S  129.5E Mw=6.1  BMG    SERAM, INDONESIA             

P: 13JUN2021 134581     4.0S  129.0E 4.0-5.4 BAAAA  Ceram area                 

 

An earthquake of M 5.5 also occurred in the south Indian Ocean area today. It was not reported felt in this remote area. Two moderately large quakes hit this region of the Indian Ocean last year - an M 6.1 on April 12, 2020 and an M 5.8 on September 19. 2020. These are the last events in this area of M>=5.5 since 2015. Forecast 134546 had expected today's activity was likely around June 9 within about 100 km of this epicenter.

 

O: 15JUN2021 23:50:04  37.5S   78.1E Mw=5.5  EMSC   MID-INDIAN RIDGE             

O: 15JUN2021 23:50:04  37.3S   78.1E mw=5.5  ANSS   Mid-Indian Ridge"

P:  9JUN2021 134546    37.0S   79.0E 4.0-5.7 CAAAA  So. Indian Ocean           

 

The M 5.5 in the Indian Ocean was followed about an hour later by an M 2.6 near the antipode in western South Dakota. Seismic activity in South Dakota often is precursory to significant seismicity in the western region of the North American plate.  For example, the last earthquakes in South Dakota of M 3.7 and 3.1 on June 4 and preceded the M 5.3 in Southern California the next day. North American plate. As today's event appears to have been triggered by energy from the M 5.5 in the Indian Ocean, that may not be the case this time. The solar eclipse of June 10 was visible in this region of South Dakota. This epicenter is at 101 degrees from the M 8.1 in the Kermadec Islands of March 4 and may have been  promoted by energy from that source.

 

O: 16JUN2021 00:11:28  44.1N  102.1W mb=2.6  ANSS   Quinn South Dakota

O: 16JUN2021 00:11:28  44.1N  102.1W mb=2.6  EMSC   SOUTH DAKOTA                 

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: 15JUN2021 14:46:08  26.6N   97.2E mb=4.8  EMSC   MYANMAR                      

P: 16JUN2021 134637    25.0N   95.0E 4.0-5.4 ABBAA  Myanmar                    

 

O: 15JUN2021 21:52:20  34.7N   70.7E mb=4.4  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 14JUN2021 134662    35.0N   73.0E 3.8-5.3 AABAA  Hindu Kush/Pakistan        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 16JUN2021 04:43:08   3.5S  129.5E Mw=5.8  EMSC   SERAM, INDONESIA             

O: 16JUN2021 04:43:08   3.5S  129.5E Mw=6.1  BMG    SERAM, INDONESIA             

P: 13JUN2021 134581     4.0S  129.0E 4.0-5.4 BAAAA  Ceram area                 

 

O: 15JUN2021 14:16:14   4.3S  102.4E mb=5.2  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 16JUN2021 134597     4.0S  102.0E 4.0-5.6 AAAAA  So. of Sumatera            

 

NEIC reported this earthquake of M 5.2 in Bengkulu, Sumatra was felt with intensity II-III in the area(s) of Bengkulu, Sumatra.

 

O: 15JUN2021 13:40:12   5.0N  125.9E mb=4.5  EMSC   MINDANAO, PHILIPPINES        

P: 13JUN2021 134573     6.0N  125.0E 4.0-5.7 AAAAA  Mindanao, Philippines      

 

O: 16JUN2021 04:19:56   5.0S  120.5E ML=4.0  EMSC   SULAWESI, INDONESIA          

P: 16JUN2021 134583     7.0S  121.0E 4.0-5.5 ABAAA  Flores Island area         

 

O: 15JUN2021 09:55:27   5.2S  134.3E mb=4.8  EMSC   KEPULAUAN ARU REGION, INDONESI

P: 17JUN2021 134601     3.0S  134.0E 4.0-5.6 ACAAA  West Irian, PNG            

 

O: 15JUN2021 14:01:09   9.8S  107.8E mb=4.5  EMSC   SOUTH OF JAVA, INDONESIA     

P: 13JUN2021 134789    10.0S  108.0E 4.0-5.6 AAAAA  So. of Java                

 

O: 15JUN2021 21:22:39  11.1S  124.7E ML=4.3  EMSC   SOUTH OF TIMOR               

P: 12JUN2021 134583     8.0S  124.0E 4.0-5.4 BCAAA  Flores Island area         

 

CENTRAL AND SOUTH AMERICA

 

O: 16JUN2021 04:51:44   1.5S   81.0W ML=4.1  EMSC   NEAR COAST OF ECUADOR

O: 16JUN2021 05:55:40   1.5S   80.9W ML=4.4  EMSC   NEAR COAST OF ECUADOR

O: 15JUN2021 20:30:24   1.6S   80.8W mb=4.9  EMSC   NEAR COAST OF ECUADOR

O: 16JUN2021 00:32:21   1.6S   80.8W mb=4.5  EMSC   NEAR COAST OF ECUADOR

O: 16JUN2021 04:00:28   1.6S   81.0W ML=4.3  EMSC   NEAR COAST OF ECUADOR

O: 15JUN2021 21:03:12   1.5S   81.0W ML=4.5  EMSC   NEAR COAST OF ECUADOR        

P: 13JUN2021 134582     1.0S   81.0W 4.0-5.8 AAAAA  Ecuador                    

 

NEIC reported this earthquake of M 4.9 in Ecuador was felt with intensity II-III in the area(s) of Ecuador at Jipiaapa, Manabi and in Pajan and Santa Elena.

 

O: 15JUN2021 14:10:01   3.9S   76.6W mb=4.5  EMSC   NORTHERN PERU                

P: 13JUN2021 134582     4.0S   80.0W 4.0-5.6 AACAA  Ecuador                    

 

O: 15JUN2021 23:19:38   9.9S   78.9W ML=4.1  EMSC   NEAR COAST OF NORTHERN PERU  

P: 11JUN2021 134591     9.0S   80.0W 4.0-5.5 BAAAA  No. Peru                   

 

O: 15JUN2021 20:51:30  10.3N   86.3W ML=4.3  EMSC   OFF COAST OF COSTA RICA      

P: 14JUN2021 134620    12.0N   86.0W 3.5-5.5 ABAAA  Nicaragua                  

 

O: 15JUN2021 22:42:30  13.3N   89.6W mb=4.1  EMSC   OFFSHORE EL SALVADOR

O: 15JUN2021 17:22:50  12.9N   88.5W mb=4.0  EMSC   OFFSHORE EL SALVADOR         

P: 16JUN2021 134620    12.0N   88.0W 3.5-5.1 AAAAA  Nicaragua                  

 

O: 16JUN2021 05:04:55  15.4N   95.1W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13JUN2021 134606    15.0N   94.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O: 15JUN2021 18:03:04  16.5N   99.1W ML=4.2  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 18JUN2021 134623    17.0N   98.0W 3.5-5.2 BAAAA  Oaxaca, Mexico             

 

O: 15JUN2021 20:46:04  18.0N   66.8W Md=3.2  EMSC   PUERTO RICO

O: 15JUN2021 22:41:15  17.9N   66.9W Md=3.1  EMSC   PUERTO RICO REGION           

P: 16JUN2021 134625    18.0N   67.0W 3.4-5.2 AAAAA  Puerto Rico                 

 

O: 15JUN2021 10:57:57  18.9N   65.0W Md=3.6  EMSC   VIRGIN ISLANDS REGION        

P: 14JUN2021 134613    19.0N   65.0W 3.0-4.9 AAAAA  Leeward Islands            

 

O: 15JUN2021 10:50:35  18.9N   68.4W Md=3.7  EMSC   DOMINICAN REPUBLIC REGION     

O: 16JUN2021 00:39:19  19.0N   68.4W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 15JUN2021 134625    19.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 15JUN2021 13:57:37  34.0S   72.0W ML=5.0  EMSC   OFFSHORE O'HIGGINS, CHILE    

O: 15JUN2021 13:57     34.0S   72.1W mb=4.6  GUC    Valparaiso at Valparaiso III i

P: 14JUN2021 134806    35.0S   70.0W 4.0-5.6 AABAA  Central Chile              

 

GUC reported this earthquake was felt with intensity  IV in  Valparaiso at Valparaiso III in Santo Domingo and II in Villa Alemana; in O'Higgins with V in Pichilemu; IV in Litueche, Navidad, Paredones and III in Las Cabras, Rancagua, Chile.

NEIC reported this earthquake of M 4.5 in Valparaiso, Chile was felt with intensity II-III in the area(s) of Valparaiso, Chile and Machali, O'Higgins.

 

 

AFRICA AND EUROPE

 

O: 15JUN2021 23:08:52  30.2N   35.0E mb=4.1  EMSC   DEAD SEA REGION              

P: 13JUN2021 134697    34.0N   29.0E 3.5-5.3 ACCAA  Turkey                     

 

NEIC reported this earthquake of M 4.1 in Jordan was felt with intensity II-III in the area(s) of Jordan at Wadi Moosa (V) and in Israel at Yeroham (VI) and II-III in Mizpe Ramon, Elat Hadarom, Dimona, Jerusalem, and in Aydan Palestine.

 

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

 

SOUTHWEST PACIFIC

 

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

 

OCEAN RIDGES

 

O: 15JUN2021 22:27:26  26.5N   44.5W mb=4.8  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 16JUN2021 134636    27.0N   45.0W 4.0-5.7 AAAAA  Mid-Atlantic Ridge         

 

O: 15JUN2021 23:50:04  37.5S   78.1E Mw=5.5  EMSC   MID-INDIAN RIDGE             

O: 15JUN2021 23:50:04  37.3S   78.1E mw=5.5  ANSS   Mid-Indian Ridge"

P:  9JUN2021 134546    37.0S   79.0E 4.0-5.7 CAAAA  So. Indian Ocean           

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 15JUN2021 19:02:40  29.6S  177.3W mb=4.6  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P: 15JUN2021 134809    30.0S  178.0W 4.0-5.4 AAAAA  No. Kermadec Islands       

 

O: 15JUN2021 10:56:27  32.1S  178.9E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 14JUN2021 134812    31.0S  178.0E 4.0-5.4 ABAAA  So. Kermadec Islands       

 

O: 15JUN2021 22:43:34  38.5S  178.0E ML=4.2  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 16JUN2021 134810    38.0S  179.0E 3.0-4.6 AAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 15JUN2021 07:11:42  28.1N  128.3E mb=4.5  EMSC   RYUKYU ISLANDS, JAPAN        

P: 18JUN2021 134641    29.0N  128.0E 4.0-5.4 BAAAA  Ryukyu Islands             

 

O: 15JUN2021 18:03:12  30.2N  138.8E mb=4.2  EMSC   IZU ISLANDS, JAPAN REGION    

P: 14JUN2021 134672    31.0N  142.0E 4.0-5.6 AABAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

 

 

O: 15JUN2021 20:07:25  33.5N  115.9W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 15JUN2021 22:30:31  33.5N  116.0W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 15JUN2021 09:59:54  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 17JUN2021 134682    33.3N  115.7W 2.5-4.6 AAAAA  So. California              

 

O: 15JUN2021 07:46:12  34.0N  117.0W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 13JUN2021 134687    34.1N  117.4W 2.5-4.9 AAAAA  So. California             

 

O: 15JUN2021 17:46:07  36.6N  121.0W Md=2.1  EMSC   CENTRAL CALIFORNIA

O: 15JUN2021 23:07:59  36.7N  121.3W ML=2.8  EMSC   CENTRAL CALIFORNIA

O: 15JUN2021 14:56:26  36.6N  121.2W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 16JUN2021 134655    36.7N  121.4W 2.5-4.4 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 in Hollister, and Salinas and Carmel Valley.

 

O: 15JUN2021 12:41:01  37.4N  121.8W Md=2.5  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 16JUN2021 134656    37.2N  122.1W 2.5-4.4 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.5 south of San Francisco, California  was felt with intensity II-III in the area(s) of south of San Francisco, California in San Jose, Mount Hamilton.

 

O: 15JUN2021 20:32:57  38.2N  118.1W ml=3.2  EMSC   NEVADA

O: 15JUN2021 20:44:36  38.2N  117.8W ml=2.0  EMSC   NEVADA

O: 15JUN2021 19:14:38  38.2N  118.1W ML=2.7  EMSC   NEVADA                       

P: 16JUN2021 134651    38.0N  118.8W 2.5-4.9 AAAAA  California/Nevada area     

 

 

ALASKA

 

O: 15JUN2021 14:07:40  51.4N  179.7E mb=3.8  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 15JUN2021 134756    51.0N  176.0E 4.0-5.8 AACAA  Rat Islands                

 

O: 15JUN2021 20:20:14  54.5N  159.8W ml=3.5  EMSC   SOUTH OF ALASKA              

P: 16JUN2021 134744    54.7N  158.9W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O: 15JUN2021 17:35:45  61.0N  151.6W ML=3.2  EMSC   KENAI PENINSULA, ALASKA      

P: 14JUN2021 134764    61.1N  150.2W 3.2-5.1 AAAAA  Central Alaska              

 

O: 15JUN2021 09:45:02  63.4N  151.4W ml=3.1  EMSC   CENTRAL ALASKA

O: 15JUN2021 09:41:43  63.5N  151.4W mb=4.1  EMSC   CENTRAL ALASKA               

P: 16JUN2021 134770    63.1N  151.9W 3.2-5.0 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 15JUN2021 08:33:01  48.2N  128.9W MB=3.0  ECAN Tofino, BC                     

O: 15JUN2021 06:19:19  48.3N  129.3W MB=3.0  ECAN Tofino, BC                     

P: 17JUN2021 134739    48.3N  128.5W 2.8-5.4 AAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 15JUN2021 11:52:03  44.4N  115.2W Ml=2.0  EMSC   SOUTHERN IDAHO

O: 15JUN2021 07:12:04  44.3N  115.2W ML=2.2  EMSC   SOUTHERN IDAHO               

P: 14JUN2021 134717    44.2N  115.4W 2.0-3.9 AAAAA  Montana/Idaho              

 

O: 15JUN2021 13:46:01  31.1N  103.4W ML=2.6  EMSC   WESTERN TEXAS                

P: 17JUN2021 134677    31.6N  103.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 16JUN2021 00:11:28  44.1N  102.1W mb=2.6  ANSS   Quinn South Dakota

O: 16JUN2021 00:11:28  44.1N  102.1W mb=2.6  EMSC   SOUTH DAKOTA                 

 

O: 15JUN2021 17:39:29  36.3N   97.5W ML=2.0  EMSC   OKLAHOMA

O: 15JUN2021 19:47:27  35.9N   98.5W ML=2.1  EMSC   OKLAHOMA                     

P: 13JUN2021 134696    37.0N   98.0W 2.0-4.2 ABAAA  Southern Plains            

 

HAWAII

 

O: 15JUN2021 17:16:09  19.2N  155.5W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII     

P: 17JUN2021 134611    18.8N  155.2W 3.0-4.4 AAAAA  Hawaii                     

 

MODERATE QUAKE SHAKES NORTHERN MINDANAO, PHILIPPINES

 

EARTHQUAKE SUMMARY FOR JUNE 14, 2021

 

The strongest earthquake in the world today was an M 5.7 in Northern Mindanao, Philippines. NEIC reported it was felt with intensity VII in Mindanao at Don Carlos, Osias, Bao, V in Maluko, Lumbia; IV in Kabacan, Liboran, Lumbia, Cagayan, and III in Lasang, Sumpong and Bac. It was followed by an M 5.4 aftershock. This activity was reported by PHIVOLCS to have been felt with intensity VI in Kadingilan, Bukidnon; V in Damulog and Don Carlos, Bukidnon; Wao, Lanao del Sur; IV in Kalilangan, Kitaotao, Panantucan, Kibawe, Maramag, Quezon, Libona and Talakag, Bukidnon; Cobato City, Marawi City; Marantao, Lanao del Sur, City of Iligan, Cagayan de Oro City, Banisilan and Pikit, Cotabato, Philippines. This event continues elevated seismicity in the region of Mindanao and Central Philippines which began shortly after Tropical Storm Choi-Wan made landfall near this epicenter in early June as identified in this summary at the time:

 

"TS Choi-Wan (04W) continued today east of the Philippine Islands with winds up to 40 kts. It is expected to track to the north and west over the next four days and could help promote seismicity in the Philippines while in the area." (June 1-5, 2021)

 

The last earthquake in northern Mindanao, Philippines of larger magnitude was an M 6.0 on February 7, 2021 and an M 6.0 on November 15, 2020. Forecast 134564 had expected today's event within about 150 km was likely around June 14.

 

O: 14JUN2021 14:59:43   7.7N  124.8E ML=4.7  EMSC   MINDANAO, PHILIPPINES

O: 14JUN2021 14:49:55   7.8N  125.0E Mw=5.3  EMSC   MINDANAO, PHILIPPINES

O: 14JUN2021 14:38:41   7.7N  125.0E Mw=5.7  EMSC   MINDANAO, PHILIPPINES        

P: 14JUN2021 134564     7.0N  126.0E 4.0-5.5 AAAAA  Central Philippines        

 

A moderate earthquake of M 5.0 occurred today midway between Puerto Rico and the Dominican Republic. NEIC reported it was felt with intensity IV in Higuey, Dominican Republic and II-III in the Dominican Republic at Boca de Yuma, Otra Banda La Altagracia, La Romana, San Pedro de Marcoris, Los Llanos,and in Puerto Rico at Aguada, Cabo Rojo, Mayaguez and Anasco. It was preceded by an M 4.1 foreshock felt with intensity IV in Otra Banda and II in Santo Domingo, Dominican Republic. NEIC reported aftershocks in Puerto Rico and the Dominican Republic were felt with intensity II-III in the area(s) of Puerto Rico at Mayaguez and Gurabo. The solar eclipse of June 10 was first visible in this area of the northern Caribbean as previously discussed in this summary. In the previous issue the increased seismicity in this region had been noted as:

 

"Enhanced seismicity in the Virgin Islands and in areas of northeastern Asia is expected to continue for several more days. After several days of enhanced regional activity today's was muted and seemed to be nearer the border of Puerto Rico and the Dominican Republic than in the Virgin Islands area." (June 13-14, 2021)

 

Today's event of M 5.0 is the strongest within about 100 km since an M 5.3 on

February 3, 2019. The only other such event in the region in the past 9 years was an M 5.8 on May 28, 2014. Forecast 134625 had expected today's activity was likely around June 15.

 

O: 14JUN2021 10:10:07  18.2N   68.5W mb=3.8  EMSC   MONA PASSAGE, DOMINICAN REPUBLIC

O: 14JUN2021 10:15:42  18.2N   68.5W Mw=5.0  EMSC   MONA PASSAGE, DOMINICAN REPUBLIC

O: 14JUN2021 11:56:29  18.3N   68.5W Md=3.2  EMSC   MONA PASSAGE, DOMINICAN REPUBLIC

O: 14JUN2021 19:51:57  18.5N   67.4W Md=3.0  EMSC   PUERTO RICO REGION

O: 15JUN2021 01:30:57  18.8N   68.4W Md=3.2  EMSC   DOMINICAN REPUBLIC REGION

O: 15JUN2021 06:39:53  19.1N   68.3W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION

O: 14JUN2021 16:28:50  18.1N   68.5W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 15JUN2021 134625    19.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

An M 2.8 earthquake in the Resolution Island area, Nunavit, Canada occurred today. NEIC has not reported an earthquake of this size within about 250 km of this epicenter in the past 30 years. The annular solar eclipse of June 10 was visible at this epicenter 10:04 UT and stresses associated with that event probably helped trigger today's earthquake. Forecast 134762 had expected this event was likely within this area around June 18.

 

O: 14JUN2021 07:29:21  61.7N   64.2W MB=2.8  ECAN Resolution Island, NU          

P: 18JUN2021 134762    61.0N   60.0W 2.5-4.2 BABAA  Baffin/Davis Strait Canada 

 

The strongest earthquake in the U.S. or Canada today was an M 4.8 in the area of the Alaska Peninsula. The last earthquake of equal or larger magnitude within about 200 km of this epicenter occurred on December 16 and 19, 2020 with M 5.3 and 5.1. These area aftershocks of the M 6.5 in the Alaska Peninsula of October 19, 2020. Forecast 134744 had expected today's event in this area was likely around June 16. Today's event occurred within minutes of local solar midnight and was probably triggered by high tidal stresses which maximize at this hour. The event occurred at the maximum tidal longitude with the new moon as expected in this summary as:

 

 

"The new moon arrives on June 10 at 10:53 UT. Longitudes which are at local solar midnight at this hour include those near 160 West while those at local solar noon are near 20 East longitude. These include areas from the northern Kermadec/Tonga/Samoa arc, Hawaii and Alaska and the Aleutians in the west and Central Europe and Africa in the east. These areas are most likely to see tidal enhancement of seismicity with this new moon. Other areas could also see an increase in seismicity especially near local solar noon and midnight with a moderately strong to major quake possible in the next week. This is an annular solar eclipse. The maximum will be at 80N 66W and will be visible in northern and central Alaska and central and northern Canada. It will end north of Kamchatka, Russia and could trigger a large earthquake or volcanism in that area. In the U.S. it will be partially visible in Central Alaska, North and South Dakota through much of the eastern and northern U.S., Greenland and Canada beginning in the region of the Virgin Islands and Puerto Rico. A strong to major earthquake is likely within several days of this eclipse, most likely in eastern Asia or the Caribbean." (June 8-10, 2021)

 

O: 14JUN2021 10:41:55  53.6N  159.7W mb=4.8  EMSC   SOUTH OF ALASKA              

P: 16JUN2021 134744    54.7N  158.9W 3.5-4.9 ABAAA  Alaska Peninsula           

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 14JUN2021 15:44:52  23.9N  121.5E ML=4.0  EMSC   TAIWAN                       

O: 14JUN2021 15:44:52  23.7N  121.5E ML=4.0  TAI    Hualien, Taiwan              

P: 13JUN2021 134644    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity IV in Hualien; II in Nantou and I in Taichung and Yilan Counties, Taiwan.

 

O: 15JUN2021 04:00:14  34.8N   97.5E mb=4.0  EMSC   SOUTHERN QINGHAI, CHINA      

P: 13JUN2021 134702    35.0N   98.0E 3.8-5.7 AAAAA  Xizang                     

 

O: 14JUN2021 07:09:13  41.9N   82.6E mb=4.4  EMSC   SOUTHERN XINJIANG, CHINA     

P: 14JUN2021 134713    42.0N   83.0E 4.0-5.6 AAAAA  Kirgizstan/Xinjiang        

 

O: 14JUN2021 10:53:34  45.9N   79.3E mb=4.0  EMSC   EASTERN KAZAKHSTAN           

P:  6JUN2021 134441    42.0N   79.0E 4.0-5.4 CCAAA  Kirgizstan/Xinjiang        

 

O: 14JUN2021 23:15:26  55.0N  160.3E mb=4.5  EMSC   KAMCHATKA PENINSULA, RUSSIA  

P: 15JUN2021 134749    52.0N  161.0E 4.0-5.4 ACAAA  E. of Kamchatka            

 

O: 14JUN2021 15:17:13  55.0N  164.7E mb=4.4  EMSC   KOMANDORSKIYE OSTROVA REGION 

P:  8JUN2021 134481    55.0N  165.0E 4.0-5.8 CAAAA  Komandorsky Isl             

 

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

 

INDONESIA AND PHILIPPINES

 

O: 14JUN2021 14:59:43   7.7N  124.8E ML=4.7  EMSC   MINDANAO, PHILIPPINES

O: 14JUN2021 14:49:55   7.8N  125.0E Mw=5.3  EMSC   MINDANAO, PHILIPPINES

O: 14JUN2021 14:38:41   7.7N  125.0E Mw=5.7  EMSC   MINDANAO, PHILIPPINES        

P: 14JUN2021 134564     7.0N  126.0E 4.0-5.5 AAAAA  Central Philippines        

 

O: 15JUN2021 02:44:46   1.6S  148.1E mb=4.7  EMSC   ADMIRALTY ISLANDS REGION, P.N.

P:  8JUN2021 134301     2.0S  150.0E 4.0-5.4 CABAA  New Ireland                

 

O: 14JUN2021 11:46:06   2.4S  102.3E ML=4.2  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 16JUN2021 134597     4.0S  102.0E 4.0-5.6 ABAAA  So. of Sumatera            

 

O: 14JUN2021 18:16:00   3.5S  134.9E mb=4.8  EMSC   PAPUA, INDONESIA             

P: 17JUN2021 134601     3.0S  134.0E 4.0-5.6 BAAAA  West Irian, PNG            

 

O: 14JUN2021 18:06:41   5.0N  126.3E ML=4.3  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 16JUN2021 134573     4.0N  126.0E 4.0-5.4 AAAAA  Mindanao, Philippines      

 

O: 15JUN2021 01:51:22   5.2S  134.0E mb=4.3  EMSC   KEPULAUAN ARU REGION, INDONESIA

O: 14JUN2021 23:38:08   5.0S  134.3E ML=4.5  EMSC   KEPULAUAN ARU REGION, INDONESI

P: 17JUN2021 134601     3.0S  134.0E 4.0-5.6 BBAAA  West Irian, PNG            

 

O: 14JUN2021 20:58:59  20.1N  145.5E mb=4.5  EMSC   MAUG ISLANDS REG, N. MARIANA I

P: 17JUN2021 134645    21.0N  144.0E 4.0-5.4 BABAA  Volcano Islands            

 

 

CENTRAL AND SOUTH AMERICA

 

O: 14JUN2021 21:49:35   1.2S   81.2W ML=4.4  EMSC   OFF COAST OF ECUADOR

O: 15JUN2021 03:28:07   1.2S   80.9W ML=4.0  EMSC   NEAR COAST OF ECUADOR

O: 14JUN2021 09:24:43   1.4S   81.1W ML=4.0  EMSC   OFF COAST OF ECUADOR

O: 14JUN2021 21:05:35   1.2S   80.8W mb=4.9  EMSC   NEAR COAST OF ECUADOR        

P: 13JUN2021 134582     1.0S   81.0W 4.0-5.8 AAAAA  Ecuador                    

 

NEIC reported this earthquake of M 4.9 in Ecuador was felt with intensity II-III in the area(s) of Ecuador at Manta, Manabi.

 

O: 14JUN2021 20:05:24   6.8N   72.9W mb=4.5  EMSC   NORTHERN COLOMBIA

O: 14JUN2021 16:25:34   6.8N   73.0W mb=4.5  EMSC   NORTHERN COLOMBIA            

P: 18JUN2021 134565     7.0N   73.0W 4.0-5.4 BAAAA  Colombia                   

 

NEIC reported this earthquake of M 4.5 in Colombia was felt with intensity II-III in the area(s) of Colombia at Chiquiza and La Calera.

 

O: 14JUN2021 10:10:07  18.2N   68.5W mb=3.8  EMSC   MONA PASSAGE, DOMINICAN REPUBLIC

O: 14JUN2021 10:15:42  18.2N   68.5W Mw=5.0  EMSC   MONA PASSAGE, DOMINICAN REPUBLIC

O: 14JUN2021 11:56:29  18.3N   68.5W Md=3.2  EMSC   MONA PASSAGE, DOMINICAN REPUBLIC

O: 14JUN2021 19:51:57  18.5N   67.4W Md=3.0  EMSC   PUERTO RICO REGION

O: 15JUN2021 01:30:57  18.8N   68.4W Md=3.2  EMSC   DOMINICAN REPUBLIC REGION

O: 15JUN2021 06:39:53  19.1N   68.3W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION

O: 14JUN2021 16:28:50  18.1N   68.5W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 15JUN2021 134625    19.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 14JUN2021 16:05:17  12.3N   87.7W ML=4.0  EMSC   NEAR COAST OF NICARAGUA      

P: 16JUN2021 134620    12.0N   88.0W 3.5-5.1 AAAAA  Nicaragua                  

 

O: 15JUN2021 00:47:49  14.7S   72.6W mb=4.6  EMSC   CENTRAL PERU                 

P: 16JUN2021 134783    14.0S   71.0W 4.0-5.4 AABAA  Central Peru               

 

O: 15JUN2021 06:16:21  15.4N   94.7W ML=4.5  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13JUN2021 134606    15.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 14JUN2021 14:14:51  16.1N   97.2W ML=4.0  EMSC   OAXACA, MEXICO               

P: 14JUN2021 134623    16.0N   97.0W 3.5-5.2 AAAAA  Oaxaca, Mexico             

 

O: 15JUN2021 05:33:59  17.9N   66.8W ML=3.8  EMSC   PUERTO RICO REGION           

P: 16JUN2021 134625    18.0N   67.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 14JUN2021 19:59:04  17.9N   99.7W ML=4.0  EMSC   GUERRERO, MEXICO             

P:  9JUN2021 134356    20.0N   99.0W 3.0-4.6 BCAAA  Northern Mexico            

 

O: 14JUN2021 23:39:02  17.9N  102.4W ML=4.0  EMSC   OFFSHORE MICHOACAN, MEXICO   

P: 14JUN2021 134618    19.0N  102.0W 3.5-5.6 AAAAA  Michoacan, Mexico          

 

O: 14JUN2021 16:28:50  18.1N   68.5W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 15JUN2021 134625    19.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 14JUN2021 12:19:56  24.3S   67.6W ML=4.1  EMSC   SALTA, ARGENTINA             

P: 13JUN2021 134794    24.0S   64.0W 4.0-5.7 AACAA  Argentina                  

 

O: 15JUN2021 02:00:52  25.8S   70.9W ML=4.0  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

O: 15JUN2021 02:00     25.8S   70.7W mb=4.0  GUC    Atacama at Chanaral and Diego

P: 13JUN2021 134795    26.0S   71.0W 4.0-5.8 AAAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity  III in  Atacama at Chanaral and Diego de Almagro, Chile.

 

O: 14JUN2021 08:43:08  27.8N  111.8W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 17JUN2021 134632    24.0N  109.0W 3.5-4.9 BCBAA  Gulf of California         

 

O: 14JUN2021 12:34:13  27.8S   71.6W mb=4.2  EMSC   OFFSHORE ATACAMA, CHILE      

P: 13JUN2021 134795    26.0S   71.0W 4.0-5.8 AAAAA  Coast Central Chile        

 

 

AFRICA AND EUROPE

 

O: 14JUN2021 12:46:31  39.7N   20.4E ML=4.1  EMSC   GREECE                       

P: 13JUN2021 134732    40.0N   21.0E 3.0-5.1 AAAAA  Romania/NW Turkey          

 

NEIC reported this earthquake of M 4.4 in Albania was felt with intensity II-III in the area(s) of Greece at Kerkira.

 

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

 

SOUTHWEST PACIFIC

 

O: 15JUN2021 03:20:47  18.0S  178.4W mb=4.3  EMSC   FIJI REGION                  

P: 13JUN2021 134791    18.0S  179.0W 4.0-5.4 AAAAA  Tonga Islands              

 

O: 14JUN2021 17:04:04  24.5S  179.7W mb=4.6  EMSC   SOUTH OF FIJI ISLANDS        

P: 12JUN2021 134804    25.0S  176.0W 4.0-5.6 AACAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O: 14JUN2021 14:18:10  39.7S  104.9W mb=5.0  EMSC   SOUTHERN PACIFIC OCEAN       

 

 

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: 14JUN2021 13:24:41  29.7N  131.0E mb=4.4  EMSC   RYUKYU ISLANDS, JAPAN        

P: 15JUN2021 134664    30.0N  131.0E 3.5-5.0 AAAAA  Kyushu, Japan area         

 

O: 14JUN2021 17:56:01  44.7N  149.7E mb=4.3  EMSC   KURIL ISLANDS                

P: 14JUN2021 134709    44.0N  149.0E 3.5-5.5 AAAAA  Hokkaido, Japan            

 

O: 14JUN2021 22:56:23  46.3N  150.0E mb=4.6  EMSC   KURIL ISLANDS                

P: 17JUN2021 134737    45.0N  152.0E 3.5-5.7 BBBAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 14JUN2021 22:22:25  38.2N  117.8W ml=2.4  EMSC   NEVADA

O: 15JUN2021 00:36:35  38.2N  117.8W ml=2.4  EMSC   NEVADA

O: 15JUN2021 00:36:35  38.2N  117.8W ml=2.4  EMSC   NEVADA

O: 14JUN2021 10:10:39  38.2N  117.9W ml=2.0  EMSC   NEVADA                       

P: 16JUN2021 134651    38.0N  118.8W 2.5-4.9 AAAAA  California/Nevada area     

 

O: 14JUN2021 14:35:15  33.2N  115.7W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 14JUN2021 22:57:04  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 15JUN2021 00:07:34  33.3N  116.1W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 14JUN2021 12:28:11  33.4N  116.3W ML=3.0  EMSC   SOUTHERN CALIFORNIA

O: 14JUN2021 17:28:06  33.5N  116.5W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 14JUN2021 08:45:20  33.1N  115.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA           

P: 15JUN2021 134680    32.7N  115.6W 2.5-4.4 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.1 in Southern California was felt with intensity II-III in the area(s) of Southern California at Borrego Springs, Mountain Center, La Quinta, Palm Deseert, Palm Springs, Valley Center, Temecula, Alpine and Escondido.

 

O: 14JUN2021 09:34:54  31.9N  115.7W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO

O: 14JUN2021 20:18:13  31.5N  115.6W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO

O: 14JUN2021 08:40:57  31.5N  115.4W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO      

O: 14JUN2021 08:51:25  31.9N  115.7W ML=2.8  EMSC   BAJA CALIFORNIA, MEXICO      

P: 16JUN2021 134680    31.7N  115.3W 2.5-4.4 AAAAA  So. California             

 

O: 14JUN2021 08:45:20  33.1N  115.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA          

P: 15JUN2021 134680    32.7N  115.6W 2.5-4.4 AAAAA  So. California             

 

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

 

O: 14JUN2021 10:37:47  33.8N  116.9W ML=2.5  EMSC   SOUTHERN CALIFORNIA          

P: 13JUN2021 134687    34.1N  117.4W 2.5-4.9 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.8 in San Jacinto, California was felt with intensity II-III in the area(s) of San Jacinto, California in Hemet, Winchester, Sun City, Menifee and Lake Elsinore.

 

O: 15JUN2021 06:16:23  36.6N  121.2W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P: 16JUN2021 134655    36.7N  121.4W 2.5-4.4 AAAAA  Central California         

 

O: 14JUN2021 10:16:25  37.3N  120.0W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 17JUN2021 134654    36.6N  120.7W 2.5-4.6 BAAAA  Central California         

 

O: 14JUN2021 10:10:39  38.2N  117.9W ml=2.0  EMSC   NEVADA                       

P: 16JUN2021 134651    38.0N  118.8W 2.5-4.9 AAAAA  California/Nevada area     

 

O: 14JUN2021 18:11:30  39.2N  123.6W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 16JUN2021 134658    39.3N  123.2W 2.5-4.6 AAAAA  Central California         

 

 

ALASKA

 

O: 14JUN2021 10:41:55  53.6N  159.7W mb=4.8  EMSC   SOUTH OF ALASKA              

P: 16JUN2021 134744    54.7N  158.9W 3.5-4.9 ABAAA  Alaska Peninsula           

 

O: 14JUN2021 21:42:53  55.1N  155.3W ml=3.0  EMSC   SOUTH OF ALASKA              

P: 12JUN2021 134744    54.7N  156.9W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O: 14JUN2021 07:09:59  63.0N  150.5W ML=3.2  EMSC   CENTRAL ALASKA               

P: 13JUN2021 134770    63.0N  148.6W 3.2-5.1 AAAAA  Central Alaska              

P: 16JUN2021 134770    63.1N  151.9W 3.2-5.0 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 12JUN2021 19:54:41  56.7N  122.0W MB=3.1  ECAN Fort St. John, BC              

P: 14JUN2021 134746    56.0N  120.0W 2.0-3.9 AABAA  Alberta                    

 

O: 12JUN2021 13:48:54  55.5N  135.2W MB=3.0  ECAN Sitka, AK                      

P: 18JUN2021 134748    53.0N  131.0W 3.0-5.3 CCBAA  British Colombia           

 

O: 14JUN2021 09:39:51  42.3N  126.2W ML=2.7  EMSC   OFF COAST OF OREGON

O: 14JUN2021 19:10:18  42.2N  126.3W ML=2.8  EMSC   OFF COAST OF OREGON          

P: 13JUN2021 134728    42.4N  126.3W 3.0-4.4 AAAAA  Off Coast of Oregon        

P: 16JUN2021 134728    42.1N  126.9W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

O: 15JUN2021 03:28:19  44.2N  128.8W ML=3.1  EMSC   OFF COAST OF OREGON          

P: 14JUN2021 134729    44.5N  129.8W 3.0-4.7 AAAAA  Off Coast of Oregon        

P: 18JUN2021 134729    44.4N  129.3W 3.0-4.6 BAAAA  Off Coast of Oregon         

 

ROCKY MOUNTAINS REGION

 

O: 14JUN2021 09:21:39  31.7N  104.4W ML=2.6  EMSC   WESTERN TEXAS

O: 14JUN2021 19:12:23  31.7N  104.6W ML=2.9  EMSC   WESTERN TEXAS

O: 14JUN2021 19:48:05  31.7N  104.4W ML=2.6  EMSC   WESTERN TEXAS

O: 14JUN2021 19:48:05  31.7N  104.4W ML=2.6  EMSC   WESTERN TEXAS                

P: 14JUN2021 134677    32.5N  104.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

O: 14JUN2021 13:04:58  44.3N  114.8W Ml=2.1  EMSC   SOUTHERN IDAHO

O: 14JUN2021 17:06:33  44.3N  114.8W Ml=2.1  EMSC   SOUTHERN IDAHO

O: 14JUN2021 09:02:57  44.3N  115.2W Ml=2.3  EMSC   SOUTHERN IDAHO               

P: 14JUN2021 134717    44.2N  115.4W 2.0-3.9 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 15JUN2021 03:14:06  35.1N   95.4W ML=2.4  EMSC   OKLAHOMA                     

P: 16JUN2021 134695    34.0N   96.0W 2.0-4.4 ABAAA  Southern Plains            

 

O: 14JUN2021 09:51:58  36.4N   97.8W ML=2.1  EMSC   OKLAHOMA                     

P: 14JUN2021 134696    36.0N   97.0W 2.0-4.2 AAAAA  Southern Plains            

 

O: 14JUN2021 14:19:12  47.1N   70.7W ML=2.6  EMSC   ST. LAWRENCE VALLEY REG., CANA

P:  8JUN2021 134443    47.0N   70.0W 2.0-3.9 CAAAA  Maine                      

 

O: 14JUN2021 07:29:21  61.7N   64.2W MB=2.8  ECAN Resolution Island, NU          

P: 18JUN2021 134762    61.0N   60.0W 2.5-4.2 BABAA  Baffin/Davis Strait Canada 

 

O: 13JUN2021 01:28:17  47.7N   90.2W MB=1.7  ECAN Thunder Bay, ON                

 

HAWAII

 

O: 14JUN2021 18:29:15  19.3N  155.4W ML=3.4  EMSC   ISLAND OF HAWAII, HAWAII     

P: 12JUN2021 134611    19.9N  156.1W 3.0-4.4 AAAAA  Hawaii                     

 

SEISMIC ENHANCEMENT FROM ECLIPSE CONTINUES

 

EARTHQUAKE SUMMARY FOR JUNE 13, 2021

 

Earthquakes of M 4.4 and 4.5 in Sakhalin, Russia and of M 4.2-4.5 in Kamchatka as well as an M 2.4 in Virginia today were in the zone of the Partial Solar eclipse of June 10. The events in Kamchatka and Sakhalin were near the annular eclipse and were likely promoted by high tidal stresses associated with the eclipse and new moon. These areas were expected to see enhanced seismicity at this time as previously described in the tidal forecast in this summary:

 

"The new moon arrives on June 10 at 10:53 UT. Longitudes which are at local solar midnight at this hour include those near 160 West while those at local solar noon are near 20 East longitude. These include areas from the northern Kermadec/Tonga/Samoa arc, Hawaii and Alaska and the Aleutians in the west and Central Europe and Africa in the east. These areas are most likely to see tidal enhancement of seismicity with this new moon. Other areas could also see an increase in seismicity especially near local solar noon and midnight with a moderately strong to major quake possible in the next week. This is an annular solar eclipse. The maximum will be at 80N 66W and will be visible in northern and central Alaska and central and northern Canada. It will end north of Kamchatka, Russia and could trigger a large earthquake or volcanism in that area. In the U.S. it will be partially visible in Central Alaska, North and South Dakota through much of the eastern and northern U.S., Greenland and Canada beginning in the region of the Virgin Islands and Puerto Rico. A strong to major earthquake is likely within several days of this eclipse, most likely in eastern Asia or the Caribbean." (June 8-10, 2021)

 

The earthquakes in Sakhalin, Russia of M 4.4 and 4.5 are of particular note.

They are the strongest within about 250 km of these epicenters since an M 4.6 on November 8, 2020 - the only such event in the area in the past year and a half with the last earthquake in this area of significantly larger magnitude an M 5.2 on February 19, 2014. Earthquakes of M 4.5-4.7 also occurred in this region on September 1, 2018 and December 7, 2018. These events are located at the southwestern edge of the end of the eclipse and were likely, given their unusual position and timing, which was within about half an hour of local solar noon, enhanced by strong tidal effects associated with the eclipse. Forecast 134757 had expected this activity was likely within about 50 km around June 15.

 

O: 14JUN2021 01:57:18  53.8N  143.6E mb=4.4  EMSC   SAKHALIN, RUSSIA

O: 14JUN2021 00:26:58  53.9N  143.7E mb=4.5  EMSC   SAKHALIN, RUSSIA             

P: 15JUN2021 134757    54.0N  143.0E 4.0-5.8 AAAAA  Sakhalin                   

 

O: 13JUN2021 14:30:39  52.8N  159.7E mb=4.0  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 18JUN2021 134749    53.0N  160.0E 4.0-5.4 BAAAA  E. of Kamchatka            

 

Earthquakes Canada released new data for the Ontario quake on June 13 with revised magnitude M 2.7. In the previous issue of this summary this event had been noted as:

 

"The eclipse was partial when it passed over the epicenter of the M 2.2 in southern Ontario on June 10 becoming an annual eclipse several minutes later in Quebec. It is the largest earthquake in southern Ontario since a similar M 2.2 on January 25, 2021 and was probably enhanced by tidal effects associated with the eclipse. The only earthquake within about 200 km of this epicenter in the past year with larger magnitude was an M 2.4 on August 10, 2020. Forecast 134723 had expected today's event was likely within about 50 km of today's epicenter around June 15." (June 12-13, 2021)

 

The last earthquake within about 100 km of this epicenter with M>=2.7 was an M 2.9 on July 19, 2018. An M 3.9 occurred about 150 km north of this on May 9, 2020. This epicenter is at 100 degrees from the M 7.4 quake in Qinghai, China of  May 21 and may have been promoted by energy from that source.

 

O: 13JUN2021 02:02:52  45.7N   76.2W MB=2.7  ECAN Wakefield, QC                  

P: 15JUN2021 134723    45.7N   75.2W 2.0-4.3 AAAAA  New York State             

 

An earthquake of M 2.4 in Virginia today was also at an epicenter where a partial solar eclipse was visible on June 10. The last earthquake within about 100 km of this epicenter with M>=2.4 occurred February 12, 2021 with M 2.6 and 2.8. Forecast 134663 had expected today's activity was likely around June 16 within about 50 km of today's epicenter.

 

O: 13JUN2021 09:23:23  37.0N   82.3W Md=2.4  EMSC   VIRGINIA                     

P: 16JUN2021 134663    37.2N   81.9W 2.0-3.9 BAAAA  Kentucky/Tennessee/NC      

 

Enhanced seismicity in the Virgin Islands and in areas of northeastern Asia is expected to continue for several more days. After several days of enhanced regional activity today's was muted and seemed to be nearer the border of Puerto Rico and the Dominican Republic than in the Virgin Islands area.

 

O: 14JUN2021 04:42:29  17.9N   67.0W Md=3.0  EMSC   PUERTO RICO REGION           

P: 16JUN2021 134625    18.0N   67.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 13JUN2021 09:58:00  18.6N   69.0W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 15JUN2021 134625    19.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 13JUN2021 19:43:10  19.4N   63.8W ML=3.2  EMSC   VIRGIN ISLANDS REGION        

P: 15JUN2021 134613    19.0N   64.0W 3.0-5.1 AAAAA  Leeward Islands            

 

The aftershock series in the Niland area of Southern California was in decline today. A new series about 150 km southwest of this, however began and some indications suggested a further migration to the west with these events  was occurring. This series included events of M 3.2, 3.3 and 3.2 and had been expected in forecast 134780 to occur within about 15 km of these epicenters around June 14. 

 

NEIC reported the earthquake of M 3.5 in Baja California  was felt with intensity II-III in the area(s) of  California in Chula Vista.

 

O: 13JUN2021 14:21:59  32.0N  116.2W Ml=2.5  EMSC   BAJA CALIFORNIA, MEXICO

O: 13JUN2021 14:35:05  32.0N  116.2W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO

O: 13JUN2021 15:08:10  32.0N  116.3W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO

O: 13JUN2021 15:08:10  32.0N  116.3W ML=3.5  ANSS   BAJA CALIFORNIA, MEXICO

O: 13JUN2021 17:55:44  31.6N  116.0W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO      

P: 14JUN2021 134680    31.9N  116.3W 2.5-4.4 AAAAA  So. California             

 

The strongest earthquakes in the world today occurred in oceanic regions  south of Iran and Yemen. The largest of these was an M 5.5 in the Gulf of Aden which was preceded by an M 4.5 foreshock. An M 5.1 also occurred in the Chagos Archipelago area southeast of this. The events in the Gulf of Aden are the strongest in that region within about 250 km since an M 5.7 on August 2, 2007.

Forecast 134610 had expected this region would see enhanced seismicity within  this area around June 18. This and the event in Chagos are near the seventh node (51 degrees) from the M 7.4 in Qinghai, China of May 21 and may have been promoted by energy from that source. Other activity today at this distance from Qinghai occurred in central and eastern New Guinea.

 

O: 13JUN2021 14:32:31  12.5N   48.5E mb=4.5  EMSC   GULF OF ADEN

O: 14JUN2021 02:44:58  12.7N   48.6E Mw=5.5  EMSC   GULF OF ADEN                 

P: 18JUN2021 134610    13.0N   51.0E 3.5-4.9 BACAA  Gulf of Aden               

 

The M 5.1 in the Chagos Archipelago region is the largest within about 250 km of that epicenter since an M 5.4 on April 9, 2020. An M 4.8 occurred about 250 km

north of this on May 21, 2021 and this may be a regional aftershock of that event. Forecast 134584 had expected enhanced seismicity in this area around June 19. This epicenter is near the antipode of Tropical Storm Carlos in the Pacific and may have been promoted by energy from that source.

 

O: 13JUN2021 09:28:02   4.9S   68.5E mb=5.1  EMSC   CHAGOS ARCHIPELAGO REGION    

P: 19JUN2021 134584     3.0S   68.0E 4.0-5.6 CBAAA  Indian Ocean               

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: 13JUN2021 07:28:07  36.4N   71.5E mb=4.3  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 16JUN2021 134662    37.0N   70.0E 3.8-5.2 BAAAA  Hindu Kush/Pakistan        

 

O: 13JUN2021 20:02:37  32.0N  104.5E mb=4.3  EMSC   EASTERN SICHUAN, CHINA       

P: 13JUN2021 134639    28.0N  104.0E 4.0-5.4 ACAAA  Myanmar                    

 

O: 13JUN2021 14:30:39  52.8N  159.7E mb=4.0  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 18JUN2021 134749    53.0N  160.0E 4.0-5.4 BAAAA  E. of Kamchatka            

 

O: 14JUN2021 01:57:18  53.8N  143.6E mb=4.4  EMSC   SAKHALIN, RUSSIA

O: 14JUN2021 00:26:58  53.9N  143.7E mb=4.5  EMSC   SAKHALIN, RUSSIA             

P: 15JUN2021 134757    54.0N  143.0E 4.0-5.8 AAAAA  Sakhalin                   

 

INDONESIA AND PHILIPPINES

 

O: 13JUN2021 18:04:17   0.0N  123.7E ML=4.6  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 15JUN2021 134572     0.0N  124.0E 4.0-5.4 AAAAA  Mindanao, Philippines      

 

O: 14JUN2021 06:40:43   0.5N   96.8E ML=4.4  EMSC   NIAS REGION, INDONESIA       

P: 11JUN2021 134574     0.0N   97.0E 4.0-5.5 BAAAA  Nicobar Islands            

 

O: 13JUN2021 07:22:19   4.3N  126.6E ML=4.4  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 16JUN2021 134573     4.0N  126.0E 4.0-5.4 BAAAA  Mindanao, Philippines      

 

O: 14JUN2021 06:31:32   5.1S  134.2E ML=4.5  EMSC   KEPULAUAN ARU REGION, INDONESI

P: 17JUN2021 134601     3.0S  134.0E 4.0-5.6 BCAAA  West Irian, PNG            

 

O: 13JUN2021 14:54:25   6.6S  128.0E ML=4.4  EMSC   BANDA SEA                    

O: 13JUN2021 11:37:47   7.7S  127.2E mb=4.4  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 16JUN2021 134578     6.0S  128.0E 4.0-5.6 BAAAA  Banda Sea                  

 

O: 14JUN2021 01:06:09   7.9S  123.2E mb=4.5  EMSC   BANDA SEA                    

P: 12JUN2021 134583     8.0S  124.0E 4.0-5.4 AAAAA  Flores Island area         

 

O: 13JUN2021 07:30:26   8.0S  107.3E ML=4.0  EMSC   JAVA, INDONESIA              

P: 12JUN2021 134595     7.0S  106.0E 4.0-5.6 AAAAA  So. of Java                

 

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 13JUN2021 17:29:44  11.6N   86.6W mb=4.4  EMSC   NEAR COAST OF NICARAGUA

O: 13JUN2021 15:13:49  11.3N   86.9W mb=4.7  EMSC   NEAR COAST OF NICARAGUA      

P: 14JUN2021 134620    12.0N   86.0W 3.5-5.5 AAAAA  Nicaragua                  

 

O: 14JUN2021 02:18:45  13.7N   90.5W mb=4.0  EMSC   OFFSHORE GUATEMALA           

P: 15JUN2021 134609    13.0N   90.0W 3.5-5.5 AAAAA  Guatemala                  

 

O: 13JUN2021 23:08:13  14.2N   91.3W mb=4.2  EMSC   GUATEMALA                    

P: 16JUN2021 134609    15.0N   91.0W 3.5-5.5 BAAAA  Guatemala                  

 

O: 13JUN2021 07:31:42  16.1S   71.5W mb=4.9  EMSC   SOUTHERN PERU                

P: 14JUN2021 134787    16.0S   74.0W 4.0-5.5 AABAA  So. Peru/Bolivia           

 

O: 14JUN2021 02:50:24  17.2N   95.2W ML=4.3  EMSC   OAXACA, MEXICO               

P: 16JUN2021 134624    18.0N   95.0W 3.5-5.1 AAAAA  Oaxaca, Mexico             

 

O: 14JUN2021 04:42:29  17.9N   67.0W Md=3.0  EMSC   PUERTO RICO REGION           

P: 16JUN2021 134625    18.0N   67.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 13JUN2021 09:58:00  18.6N   69.0W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 15JUN2021 134625    19.0N   68.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 13JUN2021 19:43:10  19.4N   63.8W ML=3.2  EMSC   VIRGIN ISLANDS REGION        

P: 15JUN2021 134613    19.0N   64.0W 3.0-5.1 AAAAA  Leeward Islands            

 

AFRICA AND EUROPE

 

O: 13JUN2021 13:19:30  39.8N   22.1E mb=4.1  EMSC   GREECE                       

P: 13JUN2021 134732    40.0N   21.0E 3.0-5.1 AAAAA  Romania/NW Turkey          

 

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

 

SOUTHWEST PACIFIC

 

O: 13JUN2021 10:59:19  23.6S  179.5W mb=4.3  EMSC   SOUTH OF FIJI ISLANDS        

P: 18JUN2021 134803    21.0S  179.0W 4.0-5.8 BCAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O: 13JUN2021 14:32:31  12.5N   48.5E mb=4.5  EMSC   GULF OF ADEN

O: 14JUN2021 02:44:58  12.7N   48.6E Mw=5.5  EMSC   GULF OF ADEN                 

P: 18JUN2021 134610    13.0N   51.0E 3.5-4.9 BACAA  Gulf of Aden               

 

O: 13JUN2021 09:28:02   4.9S   68.5E mb=5.1  EMSC   CHAGOS ARCHIPELAGO REGION    

P: 19JUN2021 134584     3.0S   68.0E 4.0-5.6 CBAAA  Indian Ocean               

 

O: 13JUN2021 07:24:50  61.0S   25.7W mb=5.0  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 17JUN2021 134823    59.0S   26.0W 4.0-5.9 BBAAA  So. Sandwich Islands       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 13JUN2021 19:49:47  37.5S  179.9E ML=3.4  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 16JUN2021 134810    38.0S  179.0E 3.0-4.6 BAAAA  North Island, N.Z.         

 

O: 13JUN2021 09:34:14  37.5S  180.0W ML=4.0  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 12JUN2021 134809    37.0S  179.0W 3.5-5.2 AAAAA  E. of North Islands N.Z.   

 

JAPAN AND KURIL ISLANDS

 

O: 13JUN2021 19:06:46  36.9N  140.5E mb=4.2  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 17JUN2021 134673    36.0N  141.0E 4.0-5.6 BAAAA  Off East Coast Honshu      

 

NEIC reported this earthquake of M 4.2 in Southeastern Honshu, Japan was felt with intensity II-III in the area(s) of Southeastern Honshu, Japan in Ibaraki.

 

O: 13JUN2021 07:16:54  27.0N  128.4E mb=4.4  EMSC   RYUKYU ISLANDS, JAPAN        

P:  9JUN2021 134351    27.0N  130.0E 4.0-5.6 BABAA  Kyushu Japan               

 

NEIC reported this earthquake of M 4.4 in The Ryukyu Islands, Japan was felt with intensity II-III in the area(s) of The Ryukyu Islands, Japan in Okinawa.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 13JUN2021 14:21:59  32.0N  116.2W Ml=2.5  EMSC   BAJA CALIFORNIA, MEXICO

O: 13JUN2021 14:35:05  32.0N  116.2W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO

O: 13JUN2021 15:08:10  32.0N  116.3W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO

O: 13JUN2021 17:55:44  31.6N  116.0W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO      

P: 14JUN2021 134680    31.9N  116.3W 2.5-4.4 AAAAA  So. California             

 

O: 13JUN2021 17:43:13  33.1N  115.7W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 13JUN2021 18:20:11  33.2N  115.7W ML=3.0  EMSC   SOUTHERN CALIFORNIA

O: 13JUN2021 23:13:22  33.2N  115.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 13JUN2021 15:44:50  33.1N  116.2W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 13JUN2021 134682    33.2N  115.7W 2.5-4.6 AAAAA  So. California             

 

O: 14JUN2021 00:10:57  33.5N  116.8W Ml=2.2  EMSC   SOUTHERN CALIFORNIA           

P: 15JUN2021 134685    33.7N  117.5W 2.5-4.9 AAAAA  So. California             

 

O: 13JUN2021 17:09:19  37.6N  119.4W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 14JUN2021 134649    37.4N  118.6W 2.5-4.9 AAAAA  California/Nevada area     

 

O: 13JUN2021 15:15:03  38.2N  118.0W ml=2.3  EMSC   NEVADA

O: 13JUN2021 20:38:05  37.9N  118.6W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P: 16JUN2021 134651    38.0N  118.8W 2.5-4.9 BAAAA  California/Nevada area     

 

O: 14JUN2021 03:35:25  38.8N  122.8W Md=2.1  EMSC   NORTHERN CALIFORNIA          

O: 14JUN2021 03:16:58  38.8N  122.8W ml=2.5  ANSS   The Geysers CA

O: 14JUN2021 03:16:24  38.8N  122.8W ml=3.5  ANSS   The Geysers CA

P: 14JUN2021 134657    38.7N  122.7W 2.5-4.4 AAAAA  Central California         

 

NEIC reported the earthquake of M 3.5 in the California Geysers was felt with intensity II-III in the area(s) of the California Geysers at Kelseyville (IV) and Cloverdale.

 

O: 13JUN2021 21:06:47  40.5N  124.8W Md=2.4  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 14JUN2021 134727    40.2N  124.2W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

O: 13JUN2021 11:11:47  40.8N  122.3W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 17JUN2021 134726    40.7N  122.3W 2.5-4.6 BAAAA  Northern California         

 

O: 14JUN2021 02:08:35  41.2N  123.4W Md=2.8  EMSC   NORTHERN CALIFORNIA          

P: 14JUN2021 134727    40.2N  124.2W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 2.8 in Northern California was felt with intensity II-III in the area(s) of Northern California at Redding.

 

 

ALASKA

 

O: 13JUN2021 17:48:13  52.2N  168.5W mb=3.7  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 19JUN2021 134750    52.5N  169.2W 3.5-4.9 CAAAA  Fox Islands, Aleutians     

 

O: 13JUN2021 08:50:46  56.1N  148.7W ML=3.1  EMSC   GULF OF ALASKA               

P: 15JUN2021 134745    54.7N  148.9W 3.5-4.9 BAAAA  Alaska Peninsula           

 

O: 13JUN2021 22:33:14  61.0N  146.8W ML=3.0  EMSC   SOUTHERN ALASKA              

P: 15JUN2021 134766    61.0N  147.7W 3.2-4.9 AAAAA  Central Alaska             

 

O: 13JUN2021 22:26:04  62.4N  148.2W ML=3.6  EMSC   CENTRAL ALASKA               

P: 13JUN2021 134770    63.0N  148.6W 3.2-5.1 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 13JUN2021 18:54:22  47.3N  122.7W Md=2.5  EMSC   PUGET SOUND REGION, WASHINGTON

P:  9JUN2021 134468    47.5N  121.8W 2.0-3.9 BAAAA  Washington state, U.S.     

 

O: 11JUN2021 20:32:53  47.6N  129.0W MB=3.8  ECAN Tofino, BC                     

P:  9JUN2021 134467    48.3N  128.5W 2.8-5.4 AAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 13JUN2021 11:45:36  44.2N  114.3W ML=2.7  EMSC   SOUTHERN IDAHO

O: 13JUN2021 20:14:55  44.3N  114.8W ML=2.6  EMSC   SOUTHERN IDAHO

O: 13JUN2021 12:08:01  44.1N  114.3W Ml=2.3  EMSC   SOUTHERN IDAHO               

P: 14JUN2021 134717    44.2N  115.4W 2.0-3.9 AAAAA  Montana/Idaho              

 

NEIC reported this earthquake of M 2.7 in Southern Idaho was felt with intensity II-III in the area(s) of Southern Idaho at Stanley.

 

EASTERN U.S./CANADA

 

O: 13JUN2021 17:17:04  28.5N   98.7W mb=2.6  EMSC   SOUTHERN TEXAS               

P:  9JUN2021 134356    28.0N   98.0W 3.0-4.6 BAAAA  Southern Texas             

 

O: 13JUN2021 02:02:52  45.7N   76.2W MB=2.7  ECAN Wakefield, QC                  

P: 15JUN2021 134723    45.7N   75.2W 2.0-4.3 AAAAA  New York State             

 

O: 13JUN2021 21:18:12  35.1N   95.4W ML=2.5  EMSC   OKLAHOMA                     

O: 14JUN2021 00:16:10  35.1N   95.4W mb=2.3  EMSC   OKLAHOMA

P: 16JUN2021 134695    34.0N   96.0W 2.0-4.4 BBAAA  Southern Plains            

 

O: 14JUN2021 05:02:22  35.1N   97.7W ML=2.0  EMSC   OKLAHOMA                     

P: 14JUN2021 134696    36.0N   97.0W 2.0-4.2 AAAAA  Southern Plains            

 

O: 13JUN2021 07:52:40  36.2N   89.4W Md=2.1  EMSC   TENNESSEE                    

O: 13JUN2021 16:51:34  36.2N   89.4W Md=2.5  EMSC   TENNESSEE

P: 17JUN2021 134667    36.9N   89.2W 2.0-4.0 BAAAA  New Madrid area            

 

O: 13JUN2021 09:23:23  37.0N   82.3W Md=2.4  EMSC   VIRGINIA                     

P: 16JUN2021 134663    37.2N   81.9W 2.0-3.9 BAAAA  Kentucky/Tennessee/NC      

 

 

HAWAII

 

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

 

MODERATE QUAKES SHAKE GUATEMALA

 

EARTHQUAKE SUMMARY FOR JUNE 12, 2021

 

The largest earthquake widely felt in the world today was an M 5.4 in Guatemala. NEIC reported it was felt with intensity VI in Guatemala at La Democracia, Cotzumalguapa Escuinta, Patulul, IV in Nueva Concepcion, San Juan la Laguna Solola, San Marcos, and III in La Gomvera, Rio Bravo, Patsun, Chimaltenago and Ciudad Vieja, Sacatepequez.  The only earthquakes in Guatemala in the past year of larger magnitude occurred as an M 5.8 on August 4, 2020 and an M 5.9 on January 15, 2021. Forecasts 134323 and 134609 had expected today's activity was likely between June 8 and 16.

 

O: 12JUN2021 22:50:30  13.5N   92.2W mb=4.1  EMSC   OFFSHORE GUATEMALA           

O: 13JUN2021 02:58:18  14.1N   91.3W Mw=5.4  EMSC   GUATEMALA                    

P:  8JUN2021 134323    14.0N   91.0W 3.5-5.3 BAAAA  Guatemala                  

P: 16JUN2021 134609    15.0N   91.0W 3.5-5.5 BAAAA  Guatemala                  

 

O: 12JUN2021 13:17:12  13.6N   90.4W mb=4.4  EMSC   OFFSHORE GUATEMALA           

P: 15JUN2021 134609    13.0N   90.0W 3.5-5.5 BAAAA  Guatemala                  

 

O: 13JUN2021 06:07:24  15.4N   93.6W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12JUN2021 09:44:26  15.6N   94.9W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O: 12JUN2021 15:57:47  14.2N   93.1W mb=4.5  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 13JUN2021 06:47:02  15.3N   94.0W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 13JUN2021 134606    15.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico             

 

A moderate quake of M 4.0-4.1 shook the California Geysers area north of San Francisco today. NEIC reported maximum intensity VI in California at Windsor and IV in Kelseyville with lesser shaking in Geyserville, Cloverdale, Middletown, Healdsburg, Hidden Valley, Hopland, Calistoga and Lakeport among others.  This is the strongest earthquake in the area of the California Geysers in 1.5 years - since an M 4.2 on November 3, 2019. An M 4.1 also occurred on March 25, 2020.

The last earthquake significantly larger magnitude in the area was an M 5.0 on December 14, 2016. Forecast 134657 had expected today's event was likely around June 14.

 

O: 13JUN2021 06:54:46  38.8N  122.8W ML=3.2  EMSC   NORTHERN CALIFORNIA          

O: 13JUN2021 06:54:46  38.8N  122.8W ML=4.1  ANSS   NORTHERN CALIFORNIA          

O: 13JUN2021 06:54:46  38.8N  122.8W ML=4.0  EMSC   NORTHERN CALIFORNIA          

P: 14JUN2021 134657    38.7N  122.7W 2.5-4.4 AAAAA  Central California         

 

The most active region of the U.S. or Canada today occurred in the Kodiak Island area of Alaska. The last earthquake of M>=4.2 in the Kodiak area was an M 4.4 on March 4, 2021 and prior to that an M 4.4 on February 11. Forecast 134745 expected today's event was likely within about 200 km of this epicenter was likely around June 15.

 

O: 12JUN2021 20:47:57  56.3N  152.1W mb=4.2  EMSC   KODIAK ISLAND REGION, ALASKA

O: 12JUN2021 21:00:41  56.3N  152.1W ML=3.1  EMSC   KODIAK ISLAND REGION, ALASKA

O: 12JUN2021 20:39:21  56.5N  152.4W ML=3.1  EMSC   KODIAK ISLAND REGION, ALASKA

O: 12JUN2021 21:20:09  56.2N  152.2W ML=3.2  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 15JUN2021 134745    54.7N  148.9W 3.5-4.9 BBBAA  Alaska Peninsula           

 

The enhanced seismicity related to the solar eclipse of June 10 continued today. Light to moderate earthquakes occurred today at the locations where the eclipse began over Southern Ontario (M 2.2) and at the end of eclipse in Sakha, Russia (M 4.0). Earthquakes of M>=4 in the Sakha region of Russia within about 500 km of this epicenter are not common. Events of M>4.2-4.3 last occurred in this area on January 11, 2021 and March 27, 2020, so today's event appears to have been enhanced by effects from the solar eclipse.

 

O: 13JUN2021 04:28:45  72.3N  124.9E mb=4.0  EMSC   NORTHWESTERN SAKHA, RUSSIA   

 

The eclipse was partial when it passed over the epicenter of the M 2.2 in southern Ontario on June 10 becoming an annual eclipse several minutes later in Quebec. It is the largest earthquake in southern Ontario since a similar M 2.2 on January 25, 2021 and was probably enhanced by tidal effects associated with the eclipse. The only earthquake within about 200 km of this epicenter in the past year with larger magnitude was an M 2.4 on August 10, 2020. Forecast 134723 had expected today's event was likely within about 50 km of today's epicenter around June 15.

 

O: 13JUN2021 02:02:52  45.7N   76.2W mb=2.2  EMSC   SOUTHERN ONTARIO, CANADA     

P: 15JUN2021 134723    45.7N   75.2W 2.0-4.3 AAAAA  New York State             

 

The solar eclipse began near the Virgin Islands and Anguilla region of the Leeward Islands. It was preceded and coincident with a series of moderate earthquakes in the area. This activity also continued today with lightly felt quakes of M 4.0 and 4.1. Forecast 134629 had expected this activity within about 100 km was likely around June 11.

 

O: 12JUN2021 11:29:34  19.3N   63.1W mb=4.1  EMSC   ANGUILLA REGION, LEEWARD ISLANDS

O: 12JUN2021 19:58:04  19.3N   63.6W ML=3.2  EMSC   VIRGIN ISLANDS REGION

O: 12JUN2021 08:41:44  19.3N   63.2W mb=4.0  EMSC   ANGUILLA REGION, LEEWARD ISLAN

P: 11JUN2021 134629    20.0N   64.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

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: 13JUN2021 04:28:45  72.3N  124.9E mb=4.0  EMSC   NORTHWESTERN SAKHA, RUSSIA   

 

O: 12JUN2021 18:31:27  20.8N   85.0E ML=3.5  EMSC   ORISSA, INDIA                 

P: 17JUN2021 134603    19.0N   92.0E 4.0-5.6 BBCAA  Andaman Islands            

 

NEIC reported this earthquake of M 4.0 in Orissa, India was felt with intensity II-III in the area(s) of Orissa, India at Angul.

 

O: 12JUN2021 21:37:51  30.8N   57.1E mb=4.2  EMSC   EASTERN IRAN                 

P:  7JUN2021 134359    29.0N   58.0E 3.5-5.0 BBAAA  So. Iran/Persian Gulf      

 

O: 12JUN2021 10:00:48  25.0N   98.0E mb=4.9  EMSC   MYANMAR-CHINA BORDER REGION  

P: 16JUN2021 134637    25.0N   95.0E 4.0-5.4 BABAA  Myanmar                    

 

O: 12JUN2021 15:58:01  42.0N   81.1E mb=4.4  EMSC   NORTHERN XINJIANG, CHINA     

P: 14JUN2021 134713    42.0N   83.0E 4.0-5.6 AABAA  Kirgizstan/Xinjiang        

 

O: 12JUN2021 09:35:50  53.8N  160.6E mb=4.0  EMSC   NEAR EAST COAST OF KAMCHATKA

O: 12JUN2021 12:56:49  52.5N  161.8E mb=4.2  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 15JUN2021 134749    52.0N  161.0E 4.0-5.4 BAAAA  E. of Kamchatka            

 

O: 13JUN2021 02:39:11  23.9N  121.6E ML=4.2  TAI    Hualien, Taiwan              

P: 13JUN2021 134644    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity II in Hualien and I in Nantou, Yilan, Taitung, Taichung, Changhua, and Yunlin Counties, Taiwan.

 

INDONESIA AND PHILIPPINES

 

O: 12JUN2021 08:56:00   0.3N  126.4E mb=4.6  EMSC   MOLUCCA SEA                  

P: 16JUN2021 134572     1.0N  126.0E 4.0-5.4 BAAAA  Mindanao, Philippines      

 

O: 13JUN2021 04:22:48   0.3S   97.3E ML=4.5  EMSC   KEPULAUAN BATU, INDONESIA    

P: 11JUN2021 134574     0.0N   97.0E 4.0-5.5 AAAAA  Nicobar Islands            

 

O: 12JUN2021 13:19:07   1.2N  121.3E ML=4.1  EMSC   MINAHASA, SULAWESI, INDONESIA

O: 12JUN2021 13:44:56   1.1N  121.3E ML=4.0  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  9JUN2021 134275     1.0N  122.0E 4.0-5.5 BAAAA  Celebes Sea                

 

O: 13JUN2021 01:14:51   1.4N  124.5E Mw=5.2  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 16JUN2021 134572     1.0N  126.0E 4.0-5.4 BABAA  Mindanao, Philippines      

 

O: 12JUN2021 11:20:54   3.8S  131.5E mb=5.0  EMSC   CERAM SEA, INDONESIA         

P: 15JUN2021 134602     5.0S  131.0E 4.0-5.4 BBAAA  West Irian, PNG            

 

O: 12JUN2021 19:35:13   8.3S  125.7E mb=4.6  EMSC   EAST TIMOR REGION            

P: 12JUN2021 134583     8.0S  124.0E 4.0-5.4 AABAA  Flores Island area         

 

NEIC reported this earthquake of M 4.6 in Dili, East Timor, Indonesia was felt with intensity II-III in the area(s) of Dili, East Timor, Indonesia.

 

O: 13JUN2021 04:52:47  10.0N  126.0E ML=4.2  EMSC   MINDANAO, PHILIPPINES        

O: 13JUN2021 00:51:27  10.2N  126.1E mb=4.6  EMSC   PHILIPPINE ISLANDS REGION

P: 14JUN2021 134614    10.0N  127.0E 3.5-5.3 AAAAA  Luzon, Philippines         

 

O: 12JUN2021 18:16:51  11.3S  118.5E ML=4.4  EMSC   SOUTH OF SUMBAWA, INDONESIA  

P: 19JUN2021 134788    11.0S  119.0E 4.0-5.5 CAAAA  So. of Indonesia           

 

CENTRAL AND SOUTH AMERICA

 

O: 13JUN2021 00:22:58   2.0S   83.5W ML=4.2  EMSC   OFF COAST OF ECUADOR         

P: 13JUN2021 134582     1.0S   81.0W 4.0-5.8 AACAA  Ecuador                    

 

O: 12JUN2021 14:45:30  10.5N   86.4W ML=4.2  EMSC   OFF COAST OF COSTA RICA      

P: 14JUN2021 134620    12.0N   86.0W 3.5-5.5 ABAAA  Nicaragua                  

 

O: 12JUN2021 13:17:12  13.6N   90.4W mb=4.4  EMSC   OFFSHORE GUATEMALA           

P: 15JUN2021 134609    13.0N   90.0W 3.5-5.5 BAAAA  Guatemala                  

 

O: 13JUN2021 06:07:24  15.4N   93.6W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12JUN2021 09:44:26  15.6N   94.9W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O: 12JUN2021 22:50:30  13.5N   92.2W mb=4.1  EMSC   OFFSHORE GUATEMALA           

O: 13JUN2021 02:58:18  14.1N   91.3W Mw=5.4  EMSC   GUATEMALA                    

P:  8JUN2021 134323    14.0N   91.0W 3.5-5.3 BAAAA  Guatemala                   

P: 16JUN2021 134609    15.0N   91.0W 3.5-5.5 BAAAA  Guatemala                  

 

O: 12JUN2021 15:57:47  14.2N   93.1W mb=4.5  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 13JUN2021 06:47:02  15.3N   94.0W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 13JUN2021 134606    15.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 12JUN2021 11:31:38  15.6N   96.2W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 14JUN2021 134623    16.0N   97.0W 3.5-5.2 AAAAA  Oaxaca, Mexico             

 

O: 12JUN2021 22:00:37  15.6S   70.9W mb=4.3  EMSC   SOUTHERN PERU                

P:  8JUN2021 134518    16.0S   70.0W 4.0-5.6 BAAAA  So. Peru/Bolivia           

 

O: 13JUN2021 05:30:57  16.2N   94.5W mb=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13JUN2021 134606    15.0N   94.0W 3.5-5.3 ABAAA  Chiapas, Mexico            

 

O: 13JUN2021 06:49:42  18.1N   65.6W Md=3.0  EMSC   PUERTO RICO REGION           

P: 14JUN2021 134613    19.0N   65.0W 3.0-4.9 AAAAA  Leeward Islands            

 

O: 12JUN2021 10:19:22  18.5N   70.3W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 14JUN2021 134626    20.0N   71.0W 3.4-5.4 ABAAA  Puerto Rico                

 

 

O: 12JUN2021 11:29:34  19.3N   63.1W mb=4.1  EMSC   ANGUILLA REGION, LEEWARD ISLANDS

O: 12JUN2021 19:58:04  19.3N   63.6W ML=3.2  EMSC   VIRGIN ISLANDS REGION

O: 12JUN2021 08:41:44  19.3N   63.2W mb=4.0  EMSC   ANGUILLA REGION, LEEWARD ISLAN

P: 11JUN2021 134629    20.0N   64.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

O: 12JUN2021 21:14:27  27.8S   71.6W mb=4.0  EMSC   OFFSHORE ATACAMA, CHILE      

P:  8JUN2021 134527    28.0S   71.0W 4.0-5.5 BAAAA  Coast Central Chile        

P: 13JUN2021 134795    26.0S   71.0W 4.0-5.8 ABAAA  Coast Central Chile        

 

O: 12JUN2021 07:42:03  30.6S   71.9W mb=4.0  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 17JUN2021 134808    30.0S   72.0W 4.0-5.4 BAAAA  Coast Central Chile        

 

O: 13JUN2021 00:51:19  40.1S   72.7W ML=3.9  EMSC   LOS LAGOS, CHILE             

P: 11JUN2021 134806    39.0S   73.0W 4.0-5.6 ABAAA  Central Chile              

 

 

 

AFRICA AND EUROPE

 

O: 13JUN2021 02:00:15  51.5N   16.1E ML=3.4  EMSC   POLAND                       

P: 15JUN2021 134754    51.0N   16.0E 3.0-4.6 AAAAA  Poland                     

 

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

 

SOUTHWEST PACIFIC

 

O: 13JUN2021 03:23:33   9.8S  160.0E mb=5.0  EMSC   SOLOMON ISLANDS              

P: 10JUN2021 134523    11.0S  161.0E 4.0-5.4 BBAAA  Vanuatu Islands            

P: 16JUN2021 134792    11.0S  161.0E 4.0-5.4 BBAAA  Vanuatu Islands            

 

NEIC reported this earthquake of M 5.0 in the Solomon Islands was felt with intensity II-III in the area(s) of the Solomon Islands at Honiara, Guadalcanal.

 

O: 12JUN2021 19:00:01  14.7S  167.5E mb=4.5  EMSC   VANUATU                      

P: 14JUN2021 134793    17.0S  167.0E 4.0-5.4 ACAAA  Vanuatu Islands            

 

O: 12JUN2021 16:41:34  16.3S  175.8W mb=4.3  EMSC   TONGA                        

P: 14JUN2021 134791    16.0S  176.0W 4.0-5.7 AAAAA  Tonga Islands              

 

O: 12JUN2021 21:15:46  20.0S  170.1E mb=4.8  EMSC   VANUATU                      

P: 14JUN2021 134797    22.0S  171.0E 4.0-5.6 ABAAA  Loyalty Islands            

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 13JUN2021 02:17:08  28.8S  176.8W mb=4.6  EMSC   KERMADEC ISLANDS REGION      

P: 14JUN2021 134798    28.0S  176.0W 4.0-5.4 AAAAA  No. Kermadec Islands       

 

O: 13JUN2021 02:38:52  31.0S  179.0W mb=4.6  EMSC   KERMADEC ISLANDS REGION      

P: 12JUN2021 134809    30.0S  179.0W 4.0-5.4 AAAAA  No. Kermadec Islands       

 

O: 12JUN2021 12:17:20  32.0S  179.7E ML=4.3  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 14JUN2021 134812    31.0S  178.0E 4.0-5.4 AABAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 12JUN2021 20:32:17  43.2N  141.6E mb=4.2  EMSC   HOKKAIDO, JAPAN REGION       

P: 11JUN2021 134709    41.0N  141.0E 3.5-5.4 ACAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 12JUN2021 23:26:02  31.5N  115.6W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO      

P: 14JUN2021 134680    31.9N  116.3W 2.5-4.4 AAAAA  So. California             

 

O: 12JUN2021 13:35:41  33.1N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 13JUN2021 134682    33.2N  115.7W 2.5-4.6 AAAAA  So. California             

 

O: 13JUN2021 01:12:42  36.0N  120.5W Md=2.4  EMSC   CENTRAL CALIFORNIA           

P: 13JUN2021 134654    36.1N  120.1W 2.5-4.4 AAAAA  Central California          

 

O: 12JUN2021 17:16:16  36.4N  121.0W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P: 10JUN2021 134375    36.4N  121.0W 2.5-4.4 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 at Los Banos and San Juan Bautista.

 

O: 13JUN2021 06:54:46  38.8N  122.8W ML=3.2  EMSC   NORTHERN CALIFORNIA          

O: 13JUN2021 06:54:46  38.8N  122.8W ML=4.0  ANSS   NORTHERN CALIFORNIA          

P: 14JUN2021 134657    38.7N  122.7W 2.5-4.4 AAAAA  Central California         

 

O: 12JUN2021 20:04:34  41.0N  121.4W MD=2.1  EMSC   NORTHERN CALIFORNIA          

P: 15JUN2021 134726    40.3N  121.2W 2.5-4.6 AAAAA  Northern California        

 

O: 12JUN2021 23:15:33  36.0N  117.4W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 12JUN2021 20:19:36  35.8N  117.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 11JUN2021 134691    35.8N  117.6W 2.5-5.0 AAAAA  So. California             

 

O: 12JUN2021 07:06:18  33.2N  115.7W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 08:25:07  33.2N  115.6W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 10:58:47  33.2N  115.7W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 11:13:48  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 14:04:20  33.2N  115.7W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 14:05:50  33.2N  115.6W ML=2.4  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 14:09:28  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 14:16:39  33.2N  115.7W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 14:20:08  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 14:26:42  33.2N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 14:29:01  33.2N  115.6W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 14:29:01  33.2N  115.6W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 14:33:15  33.2N  115.6W ML=2.4  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 15:30:31  33.2N  115.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 21:46:13  33.2N  115.7W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 13JUN2021 01:48:18  33.2N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 22:00:25  33.3N  116.2W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 13JUN2021 01:34:56  33.6N  115.7W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 13:35:41  33.1N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 13JUN2021 134682    33.2N  115.7W 2.5-4.6 AAAAA  So. California             

 

O: 13JUN2021 06:54:46  38.8N  122.8W ML=3.2  EMSC   NORTHERN CALIFORNIA          

O: 13JUN2021 06:54:46  38.8N  122.8W ML=4.0  ANSS   NORTHERN CALIFORNIA          

P: 14JUN2021 134657    38.7N  122.7W 2.5-4.4 AAAAA  Central California         

 

ALASKA

 

O: 12JUN2021 20:47:57  56.3N  152.1W mb=4.2  EMSC   KODIAK ISLAND REGION, ALASKA

O: 12JUN2021 21:00:41  56.3N  152.1W ML=3.1  EMSC   KODIAK ISLAND REGION, ALASKA

O: 12JUN2021 20:39:21  56.5N  152.4W ML=3.1  EMSC   KODIAK ISLAND REGION, ALASKA

O: 12JUN2021 21:20:09  56.2N  152.2W ML=3.2  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 15JUN2021 134745    54.7N  148.9W 3.5-4.9 BBBAA  Alaska Peninsula           

 

O: 12JUN2021 10:40:41  51.5N  173.5W mb=4.1  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 13JUN2021 134747    52.3N  174.6W 3.5-4.9 AAAAA  Andreanoff Isls, Aleutians 

 

O: 12JUN2021 11:46:21  54.4N  161.4W mb=3.8  EMSC   ALASKA PENINSULA             

P: 16JUN2021 134760    54.2N  162.5W 3.5-5.1 BAAAA  Unimak Islands, Aleutians  

 

O: 13JUN2021 01:20:36  61.8N  149.7W ML=3.2  EMSC   SOUTHERN ALASKA

O: 13JUN2021 05:06:33  62.2N  149.6W mb=3.6  EMSC   CENTRAL ALASKA                

P: 13JUN2021 134770    63.0N  148.6W 3.2-5.1 AAAAA  Central Alaska             

 

NEIC reported the earthquake of M 3.2 in Southern Alaska was felt with intensity II-III in the area(s) of Southern Alaska at Wasilla, Chugiak, Anchorage and Eagle River.

 

NEIC reported the aftershock of M 3.6 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska at Talkeetna, Wasilla, Willow and Anchorage.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 12JUN2021 11:12:29  47.3N  123.2W Mw=3.8  EMSC   OLYMPIC PENINSULA, WASHINGTON

P:  9JUN2021 134468    47.5N  121.8W 2.0-3.9 BABAA  Washington state, U.S.     

 

NEIC reported this earthquake of M 3.9 in the Olympic Peninsula, Washington was felt with intensity II-III in the area(s) of the Olympic Peninsula, Washington at Hoodsport, Matlock, Shelton, Union, Tahuya, Grapeview, Belfair, Olympia, Elma and Seabeck.

 

ROCKY MOUNTAINS REGION

 

O: 12JUN2021 15:51:25  44.2N  115.1W Ml=3.7  EMSC   SOUTHERN IDAHO

O: 13JUN2021 04:25:42  44.3N  115.2W Ml=2.6  EMSC   SOUTHERN IDAHO

O: 12JUN2021 13:16:09  44.2N  115.1W Ml=2.0  EMSC   SOUTHERN IDAHO               

P: 14JUN2021 134717    44.2N  115.4W 2.0-3.9 AAAAA  Montana/Idaho              

 

NEIC reported this earthquake of M 3.2 in Southern Idaho was felt with intensity II-III in the area(s) of Southern Idaho at Stanley, Lowman and Meridian.

 

EASTERN U.S./CANADA

 

O: 12JUN2021 12:51:22  35.1N   95.3W ML=2.1  EMSC   OKLAHOMA                     

P: 16JUN2021 134695    34.0N   96.0W 2.0-4.4 BBAAA  Southern Plains            

 

O: 12JUN2021 21:57:55  35.1N   97.7W ML=2.0  EMSC   OKLAHOMA                     

P: 14JUN2021 134696    36.0N   97.0W 2.0-4.2 AAAAA  Southern Plains            

 

O: 13JUN2021 02:02:52  45.7N   76.2W mb=2.2  EMSC   SOUTHERN ONTARIO, CANADA     

P: 15JUN2021 134723    45.7N   75.2W 2.0-4.3 AAAAA  New York State             

 

HAWAII

 

O: 13JUN2021 01:19:11  19.3N  155.2W ML=3.8  EMSC   ISLAND OF HAWAII, HAWAII     

P: 12JUN2021 134611    19.9N  156.1W 3.0-4.4 AAAAA  Hawaii                      

 

NEIC reported this earthquake of M 3.7 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Hilo (V), Hawaii National Park, Volcano, Pahoa, Mountain View, Kurtistown, Keaau, Papaikou, Pepeekeo and Hakalau.

 

SOUTHERN CALIFORNIA SERIES RE-ENERGIZED

 

EARTHQUAKE SUMMARY FOR JUNE 11, 2021

 

 

The series of earthquakes in the Niland and El Centro area of Southern California resumed today after several days of quiet in the aftershocks following an M 5.3 three days ago. Today's activity included an M 3.9 and 4.3 which were felt with intensity III-IV in Calipatria, Winterhaven, Thermal, Calexico, Imperial, Brawley and El Centro, California. Following is a listing of events of M>=3 in this area today. A listing of aftershocks of M>=2 can be found in the California section below. Forecast 134682 had expected today's enhanced activity was likely around June 13.

 

O: 12JUN2021 04:27:34  33.2N  115.7W Mw=3.9  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:30:28  33.2N  115.7W Mw=3.7  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:39:46  33.2N  115.7W Mw=4.3  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:41:37  33.2N  115.7W Mw=3.9  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:48:44  33.2N  115.7W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:55:20  33.2N  115.7W Mw=3.8  EMSC   SOUTHERN CALIFORNIA

P: 13JUN2021 134682    33.2N  115.7W 2.5-4.6 AAAAA  So. California             

 

 

The strongest earthquakes in the U.S. or Canada today were a pair of M 4.2-4.3 events in the Fort McPherson of Northwest Territories, Canada.  The partial annular eclipse was visible at this epicenter around 11:00 UT on June 10.

Earthquakes of M 4.2-4.3 occurred within about 200 km of this epicenter on

February 10, 2021 and December 21, 2020, but the last such event of significantly larger magnitude in this area was an M 5.0 on December 22, 2017. Forecast 134503 expected this area would see enhanced seismicity in early June.

Forecast 134774 and 134777 had expected this event was likely around June 11-15 within about 50 km of this epicenter.

 

O: 11JUN2021 07:05:15  66.7N  135.8W Mw=3.8  EMSC   NORTHERN YUKON TERRITORY, CANA

O: 11JUN2021 07:05:15  66.8N  135.9W MB=4.3  ECAN Fort McPherson, NT   

O: 11JUN2021 07:05:00  66.7N  135.9W MB=4.2  ECAN of Fort McPherson, NT  

O: 11JUN2021 07:05:15  66.7N  135.4W MB=4.2  ECAN OF FORT MCPHERSON, NT          

P: 11JUN2021 134774    66.9N  135.8W 3.0-4.9 AAAAA  Northern Alaska            

P: 15JUN2021 134777    67.0N  135.0W 2.5-4.3 BAAAA  Yukon Territory, Canada    

 

The strongest earthquake in the world today was an M 5.2 and M 5.3 in the

region of Taiwan. CWB reported this earthquake was felt with intensity IV in Taitung, III in Pingtung; II in Hualien, Kaohsiung, Chiayi, Tainan, Yunlin, Changhua, Nantou and Taichung Counties, Taiwan. NEIC reported this earthquake of M 4.9 in Taiwan was felt with intensity II-III in the area(s) of Taiwan in Taitung (IV) and Taichung. The M 5.2 was reported by NEIC as felt with intensity IV in Taiwan at Hualien, and Taoyuan and II-III in Taichung, Taipei, and Tainan. The last earthquake in the region of Taiwan of M>=5.3 occurred as an M 5.8  near today's epicenter on April 18. Forecasts 134644 and 134360 had expected today's activity within about 50 km was likely around June 10-13.

 

 

O: 11JUN2021 07:36:43  23.9N  121.5E ML=4.9  EMSC   TAIWAN

O: 11JUN2021 08:53:47  23.9N  121.6E ML=4.2  EMSC   TAIWAN

O: 11JUN2021 08:55:19  23.9N  121.6E ML=4.1  EMSC   TAIWAN

O: 11JUN2021 22:49:12  24.8N  122.6E mb=4.6  EMSC   TAIWAN REGION

O: 11JUN2021 21:58:56  22.6N  121.1E ML=5.3  TAI    Hualien, Taiwan              

O: 11JUN2021 21:58:57  22.6N  121.3E Mw=4.9  EMSC   TAIWAN REGION                

O: 11JUN2021 07:33:26  23.9N  121.6E Mw=5.2  EMSC   TAIWAN                       

P: 13JUN2021 134644    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

P: 10JUN2021 134360    21.0N  120.0E 4.0-5.4 ABAAA  Taiwan                     

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 12JUN2021 01:44:43  36.6N   71.0E mb=4.2  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 16JUN2021 134662    37.0N   70.0E 3.8-5.2 BAAAA  Hindu Kush/Pakistan        

 

O: 11JUN2021 14:31:11  37.4N   56.7E mb=4.6  EMSC   NORTHEASTERN IRAN            

P: 12JUN2021 134670    37.0N   59.0E 3.8-5.2 AABAA  No. Iran                   

 

O: 11JUN2021 07:36:43  23.9N  121.5E ML=4.9  EMSC   TAIWAN

O: 11JUN2021 08:53:47  23.9N  121.6E ML=4.2  EMSC   TAIWAN

O: 11JUN2021 08:55:19  23.9N  121.6E ML=4.1  EMSC   TAIWAN

O: 11JUN2021 22:49:12  24.8N  122.6E mb=4.6  EMSC   TAIWAN REGION

O: 11JUN2021 21:58:56  22.6N  121.1E ML=5.3  TAI    Hualien, Taiwan              

O: 11JUN2021 21:58:57  22.6N  121.3E Mw=4.9  EMSC   TAIWAN REGION                

O: 11JUN2021 07:33:26  23.9N  121.6E Mw=5.2  EMSC   TAIWAN                       

P: 13JUN2021 134644    24.0N  121.0E 4.0-5.4 AAAAA  Taiwan                     

P: 10JUN2021 134360    21.0N  120.0E 4.0-5.4 ABAAA  Taiwan                     

 

INDONESIA AND PHILIPPINES

 

O: 11JUN2021 21:37:23   0.0S  100.2E mb=4.7  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 18JUN2021 134576     1.0N  100.0E 4.0-5.6 CAAAA  So. Sumatera               

 

O: 11JUN2021 23:12:39   1.2N  127.2E ML=4.5  EMSC   HALMAHERA, INDONESIA         

P: 16JUN2021 134572     1.0N  126.0E 4.0-5.4 BAAAA  Mindanao, Philippines      

 

O: 12JUN2021 05:23:52   2.7S   77.8W ML=4.0  EMSC   PERU-ECUADOR BORDER REGION   

P: 16JUN2021 134582     1.0S   78.0W 4.0-5.5 BBAAA  Ecuador                    

 

O: 11JUN2021 23:24:58   3.6S  126.7E ML=4.1  EMSC   BURU, INDONESIA              

P:  9JUN2021 134294     5.0S  126.0E 4.0-5.4 ABAAA  Ceram area                 

 

O: 11JUN2021 16:05:58   3.8S  138.6E ML=4.1  EMSC   PAPUA, INDONESIA             

P: 17JUN2021 134601     5.0S  138.0E 4.0-5.4 CBAAA  West Irian, PNG            

 

O: 11JUN2021 19:13:46   4.1N   96.1E mb=4.9  EMSC   NORTHERN SUMATRA, INDONESIA  

P:  6JUN2021 134289     4.0N   96.0E 4.0-5.5 BAAAA  Nicobar Islands            

 

O: 12JUN2021 01:18:34   4.5N  127.0E ML=4.1  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 16JUN2021 134573     4.0N  126.0E 4.0-5.4 BAAAA  Mindanao, Philippines      

 

O: 11JUN2021 07:00:49   5.9S  146.2E mb=5.1  EMSC   EASTERN NEW GUINEA REG., P.N.G

P:  8JUN2021 134302     7.0S  145.0E 4.0-5.5 BBAAA  New Ireland                

 

NEIC reported this earthquake of M 5.1 in New Guinea was felt with intensity II-III in the area(s) of New Guinea at Kainantu.

 

O: 11JUN2021 21:37:55   6.1N  126.3E mb=4.6  EMSC   MINDANAO, PHILIPPINES        

P:  9JUN2021 134279     7.0N  126.0E 4.0-5.5 AAAAA  Central Philippines        

P: 11JUN2021 134571     7.0N  127.0E 4.0-5.4 AAAAA  Halmahera                  

 

CENTRAL AND SOUTH AMERICA

 

O: 11JUN2021 08:03:03   0.9S   81.3W ML=4.0  EMSC   OFF COAST OF ECUADOR         

P: 13JUN2021 134582     1.0S   81.0W 4.0-5.8 AAAAA  Ecuador                    

 

O: 11JUN2021 07:46:46   2.9S   78.0W ML=4.3  EMSC   ECUADOR                      

P:  9JUN2021 134295     1.0S   77.0W 4.0-5.4 ACAAA  Ecuador                    

 

O: 12JUN2021 06:18:31  10.6N   62.8W mb=5.1  EMSC   SUCRE, VENEZUELA             

P:  6JUN2021 134342    11.0N   62.0W 3.4-5.2 CAAAA  Windward Islands           

 

O: 11JUN2021 14:32:37  13.0N   89.5W ML=4.1  EMSC   OFFSHORE EL SALVADOR         

P: 13JUN2021 134606    15.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 12JUN2021 02:45:39  14.0N   91.6W mb=4.0  EMSC   OFFSHORE GUATEMALA           

P:  8JUN2021 134323    14.0N   91.0W 3.5-5.3 BAAAA  Guatemala                  

 

O: 11JUN2021 17:45:30  14.7N   93.3W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 13JUN2021 134606    15.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 12JUN2021 04:57:57  15.5N   95.0W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13JUN2021 134606    15.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 11JUN2021 20:50:18  17.9N   67.0W Md=3.2  EMSC   PUERTO RICO REGION

O: 11JUN2021 10:50:17  17.9N   66.8W Md=3.0  EMSC   PUERTO RICO REGION           

P: 16JUN2021 134625    18.0N   67.0W 3.4-5.2 BAAAA  Puerto Rico                

 

O: 11JUN2021 15:25:48  18.8N   69.9W ML=3.2  EMSC   DOMINICAN REPUBLIC           

P:  9JUN2021 134339    18.0N   69.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O: 11JUN2021 13:44:14  19.2N   67.7W Md=3.3  EMSC   PUERTO RICO REGION

O: 11JUN2021 17:05:11  19.0N   67.2W ML=3.5  EMSC   PUERTO RICO REGION           

P: 15JUN2021 134625    19.0N   68.0W 3.4-5.1 BAAAA  Puerto Rico                

 

O: 12JUN2021 02:16:55  19.3S   69.2W mb=4.1  EMSC   TARAPACA, CHILE              

P: 13JUN2021 134802    20.0S   70.0W 4.0-5.6 AAAAA  So. Peru/Bolivia           

 

O: 12JUN2021 05:21:11  19.4N   63.6W ML=3.0  EMSC   VIRGIN ISLANDS REGION        

P: 11JUN2021 134629    20.0N   64.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

O: 11JUN2021 19:54:01  19.5N  102.2W ML=4.0  EMSC   MICHOACAN, MEXICO            

P: 14JUN2021 134618    19.0N  102.0W 3.5-5.6 BAAAA  Michoacan, Mexico          

 

O: 11JUN2021 10:05:01  20.0N   70.4W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 14JUN2021 134626    20.0N   71.0W 3.4-5.4 BAAAA  Puerto Rico                

 

O: 12JUN2021 05:46:54  20.8S   68.9W mb=4.6  EMSC   TARAPACA, CHILE              

P:  9JUN2021 134528    21.0S   69.0W 4.0-5.4 BAAAA  Coast No. Chile            

 

NEIC reported this earthquake of M 4.6 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile at Iquique, Tarapaca.

 

O: 12JUN2021 02:52:40  23.5S   66.7W mb=4.4  EMSC   JUJUY, ARGENTINA             

P:  7JUN2021 134526    23.0S   67.0W 4.0-5.6 BAAAA  Argentina                  

 

NEIC reported this earthquake of M 4.6 in Argentina was felt with intensity II-III in the area(s) of Argentina at La Rioja.

 

O: 11JUN2021 18:19:27  28.4N  105.2W mb=4.1  EMSC   CHIHUAHUA, MEXICO            

 

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

 

O: 11JUN2021 17:04:42  29.3S   66.8W mb=4.8  EMSC   LA RIOJA, ARGENTINA          

P: 11JUN2021 134794    29.0S   68.0W 4.0-5.6 AAAAA  Argentina                  

 

O: 12JUN2021 03:36:25  33.7S   72.2W Mw=5.1  EMSC   OFFSHORE VALPARAISO, CHILE   

O: 12JUN2021 03:36     33.8S   72.3W mb=4.9  GUC    O'Higgins at Pichilemu, III in

O: 12JUN2021 02:55:48  33.8S   72.2W mb=4.4  EMSC   OFFSHORE VALPARAISO, CHILE

P: 17JUN2021 134805    33.0S   68.0W 4.0-5.8 BACAA  Central Chile              

P:  7JUN2021 134540    36.0S   73.0W 4.0-5.5 BCAAA  Central Chile              

 

GUC reported this earthquake of  4.9 was felt with intensity IV in  O'Higgins at Pichilemu, III in Codegua, Graneros, LKa Estrella, Marchihue, Mostazal, Navidad and Paredones; in Santiago with III in Las Condes, Melipilla, San Bernardo ad II in El Monte and Santiago; and in Valparaiso with III in San Antonio and Valparaiso and II in Cartagena and Santo Domingo, Chile.

NEIC reported this earthquake of M 5.1 in Santiago, Chile was felt with intensity II-III in the area(s) of Santiago, Chile with VI in Valparaiso, V in Vina del Mar, IV in Quilpue, and II-III in San Antonio, Melipilla, Rancagua, Machali, O'Higgins. A foreshock of M 4.4 was felt with intensity IV in Vina del Mar, Valpaiso and II-III in San Antonio and Santiago.

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O: 11JUN2021 16:45:18  18.0S  178.3W mb=4.1  EMSC   FIJI REGION                  

P: 13JUN2021 134791    18.0S  179.0W 4.0-5.4 AAAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 11JUN2021 07:26:07  32.5S  179.4E ML=4.2  EMSC   SOUTH OF KERMADEC ISLANDS

O: 11JUN2021 16:47:22  31.3S  179.0E ML=4.2  EMSC   KERMADEC ISLANDS REGION      

O: 11JUN2021 11:51:14  31.7S  179.7E mb=4.0  EMSC   KERMADEC ISLANDS REGION      

P: 14JUN2021 134812    31.0S  178.0E 4.0-5.4 BAAAA  So. Kermadec Islands       

 

O: 11JUN2021 16:08:58  38.3S  177.1E ML=3.9  EMSC   NORTH ISLAND OF NEW ZEALAND  

P: 13JUN2021 134810    38.0S  176.0E 3.0-4.7 AAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 11JUN2021 08:34:30  39.9N  142.3E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 11JUN2021 134709    41.0N  141.0E 3.5-5.4 ABAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 11JUN2021 10:45:52  36.9N  121.7W ML=3.1  EMSC   NORTHERN CALIFORNIA

O: 11JUN2021 10:45:52  36.9N  121.7W ML=3.3  ANSS   NORTHERN CALIFORNIA

O: 11JUN2021 11:23:34  36.9N  121.7W Md=2.3  EMSC   NORTHERN CALIFORNIA

O: 12JUN2021 03:48:31  36.8N  121.3W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 16JUN2021 134655    36.7N  121.4W 2.5-4.4 BAAAA  Central California         

 

NEIC reported this earthquake of M 3.3 in Central California was felt with intensity II-III in the area(s) of Central California at Aromas, Watsonville, Gilroy, San Juan Bautista, Salinas, Castroville, San Martin, Aptos, Capitola, Morgan Hill.

 

O: 11JUN2021 19:13:32  36.6N  121.2W Md=2.2  EMSC   CENTRAL CALIFORNIA

O: 11JUN2021 10:39:53  36.6N  121.2W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 10JUN2021 134375    36.4N  121.0W 2.5-4.4 AAAAA  Central California         

 

O: 12JUN2021 04:22:23  33.2N  115.6W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:24:01  33.2N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:27:34  33.2N  115.7W Mw=3.9  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:30:28  33.2N  115.7W Mw=3.7  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:30:28  33.2N  115.7W Mw=3.7  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:31:32  33.2N  115.6W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:32:54  33.2N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:34:57  33.2N  115.7W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:36:44  33.2N  115.6W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:38:00  33.2N  115.6W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:39:46  33.2N  115.7W Mw=4.3  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:41:37  33.2N  115.7W Mw=3.9  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:44:34  33.2N  115.7W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:47:46  33.2N  115.6W ML=2.4  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:48:44  33.2N  115.7W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:51:41  33.2N  115.6W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:54:12  33.2N  115.7W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:57:32  33.2N  115.7W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:59:46  33.2N  115.6W ML=2.3  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:01:11  33.2N  115.7W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:11:56  33.2N  115.7W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:15:32  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:16:23  33.2N  115.7W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:20:21  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:23:47  33.2N  115.7W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:29:02  33.2N  115.7W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:34:27  33.2N  115.7W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:55:20  33.2N  115.7W Mw=3.8  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:58:32  33.2N  115.7W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 06:42:12  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 06:56:24  33.2N  115.7W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 06:57:28  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:26:04  33.3N  115.7W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:03:10  33.3N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:25:13  33.3N  115.8W ML=2.4  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 05:35:53  33.3N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 12JUN2021 04:39:46  33.2N  115.7W Mw=4.3  EMSC   SOUTHERN CALIFORNIA          

P: 13JUN2021 134682    33.2N  115.7W 2.5-4.6 AAAAA  So. California             

 

O: 11JUN2021 08:10:29  31.3N  114.3W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 14JUN2021 134679    30.2N  114.3W 2.5-4.4 BBAAA  So. California             

 

 

O: 11JUN2021 08:57:25  38.2N  117.7W ML=2.5  EMSC   NEVADA                       

O: 11JUN2021 09:56:59  38.2N  117.9W ML=2.0  EMSC   NEVADA

P: 14JUN2021 134649    37.4N  118.6W 2.5-4.9 BAAAA  California/Nevada area     

 

O: 11JUN2021 21:39:44  38.2N  118.2W ml=2.2  EMSC   NEVADA                       

O: 12JUN2021 05:52:27  38.2N  118.0W ML=2.2  EMSC   NEVADA

O: 12JUN2021 05:58:35  38.2N  118.0W ml=2.5  EMSC   NEVADA

P: 16JUN2021 134651    38.0N  118.8W 2.5-4.9 BAAAA  California/Nevada area     

 

 

ALASKA

 

O: 11JUN2021 08:35:23  56.0N  149.2W ml=3.3  EMSC   GULF OF ALASKA               

P: 15JUN2021 134745    54.7N  148.9W 3.5-4.9 BBAAA  Alaska Peninsula           

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 12JUN2021 05:03:01  42.3N  126.2W ML=2.9  EMSC   OFF COAST OF OREGON          

P: 13JUN2021 134728    42.4N  126.3W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

O: 11JUN2021 07:05:15  66.7N  135.8W Mw=3.8  EMSC   NORTHERN YUKON TERRITORY, CANA

O: 11JUN2021 07:05:15  66.8N  135.9W MB=4.3  ECAN Fort McPherson, NT   

O: 11JUN2021 07:05:00  66.7N  135.9W MB=4.2  ECAN of Fort McPherson, NT  

O: 11JUN2021 07:05:15  66.7N  135.4W MB=4.2  ECAN OF FORT MCPHERSON, NT          

P: 11JUN2021 134774    66.9N  135.8W 3.0-4.9 AAAAA  Northern Alaska            

P: 15JUN2021 134777    67.0N  135.0W 2.5-4.3 BAAAA  Yukon Territory, Canada    

 

ROCKY MOUNTAINS REGION

 

O: 11JUN2021 22:27:49  31.7N  104.4W ML=2.8  EMSC   WESTERN TEXAS

O: 12JUN2021 03:58:25  31.6N  104.3W ML=2.7  EMSC   WESTERN TEXAS                

P: 14JUN2021 134677    32.5N  104.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

O: 12JUN2021 01:51:19  44.3N  115.2W ML=2.8  EMSC   SOUTHERN IDAHO

O: 11JUN2021 14:13:26  44.3N  115.2W Ml=2.5  EMSC   SOUTHERN IDAHO               

P: 14JUN2021 134717    44.2N  115.4W 2.0-3.9 BAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 11JUN2021 07:02:02  35.1N   95.3W mb=2.3  EMSC   OKLAHOMA                     

P: 16JUN2021 134695    34.0N   96.0W 2.0-4.4 BBAAA  Southern Plains            

 

O: 11JUN2021 03:20:44  72.0N   75.1W MB=2.3  ECAN Pond Inlet, NU                 

P:  9JUN2021 134508    71.0N   75.0W 2.5-4.1 AAAAA  Baffin/Davis Strait Canada 

 

HAWAII

 

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

 

TRIGGERED ECLIPSE SEISMICITY EXPANDS

 

EARTHQUAKE SUMMARY FOR JUNE 10, 2021

 

In the previous issue of this summary, it was noted that the M 4.8-5.0 in the Ungava, Quebec area of Canada occurred a bit more than an hour after the center of the solar eclipse of  June 10 passed over this exact epicenter and was the strongest earthquake in Quebec within about 500 km of this epicenter in at least 30 years. This was not the only earthquake located in Canada since the eclipse which occurred at an epicenter where the eclipse was fully visible. An M 2.6 near Resolution Island to the west of the M 4.8-5.0 occurred several hours before the eclipse and an M 2.3 in the Baffin Bay area of Nunavit, Canada occurred early on June 11. The full eclipse was also visible at this epicenter. The Resolution Island event had been expected in early June within about 150 km of this epicenter in forecast 134491. The M 2.3 in Baffin Bay had been expected within about 100 km of this epicenter around June 9.

 

O: 10JUN2021 05:36:16  61.0N   61.2W MB=2.6  ECAN Resolution Island, NU          

P:  4JUN2021 134491    61.0N   58.0W 2.5-4.1 CABAA  Baffin/Davis Strait Canada 

 

The annular eclipse was fully visible at this epicenter at 10:06 UT on June 10.

 

O: 11JUN2021 03:20:44  72.0N   75.1W MB=2.3  ECAN Pond Inlet, NU                 

P:  9JUN2021 134508    71.0N   75.0W 2.5-4.1 AAAAA  Baffin/Davis Strait Canada 

 

The annular eclipse was fully visible at this epicenter at 10:26 UT on June 10.

 

A group of other minor earthquakes occurred within the area where the eclipse was partially visible. These occurred in the Lake Erie area of Ohio,  and in the Fort McPherson area of Northwest Territories, Canada with two events of M 4.2 reported by Earthquakes Canada. This event had been expected in early June in this general area.

 

O: 11JUN2021 07:05:15  66.7N  135.4W MB=4.2  ECAN OF FORT MCPHERSON, NT          

O: 11JUN2021 07:05:00  66.7N  135.9W MB=4.2  ECAN of Fort McPherson, NT          

O: 11JUN2021 07:05:15  66.7N  135.8W mb=4.1  EMSC   NORTHERN YUKON TERRITORY, CANA

P:  6JUN2021 134503    64.0N  138.0W 3.0-4.7 BCAAA  Northern Alaska            

 

The partial annular eclipse was visible at this epicenter around 11:00 UT on June 10.

 

The earthquake in Lake Erie had been expected within about 150 km of this epicenter in forecast 134459 to occur around June 10.

 

O: 10JUN2021 12:52:34  42.3N   81.1W MB=2.1  ECAN Lake Erie                      

P: 10JUN2021 134459    41.0N   81.0W 2.0-3.9 ABAAA  Ohio/Lake Erie             

 

O: 10JUN2021 15:36:20  63.3N  165.5W ML=3.0  EMSC   BERING STRAIT                

 

The partial annular eclipse was visible at this epicenter around 10:40 UT on June 10.

 

 

The mainquake triggered by tidal stresses associated with the eclipse occurred

in the Ungava area of Quebec and was reported in the previous issue of this summary as:

 

"The annular solar eclipse occurred today. At least one significant earthquake appears to have been directly triggered by this tidal alignment. According to the NASA solar eclipse page the Annular eclipse passed over an area of Quebec, Canada at 60N 74W at 10:04 UT. A bit more than hour later an earthquake of M 4.6 hit at 60N 74W in the Ungava Peninsula, Quebec Canada. Earthquakes Canada gives this event at M 4.9 in the region east of Povungnituk south of Baffin Bay, Canada. This is not an insignificant regional event. It is the largest within about 500 km of this epicenter in at least 30 years. The only larger earthquake in the past 30 years within about 1000 km of this epicenter occurred on October 13, 1992 (M 4.8). No events of M>=4.9 had hit this area in at least 30 years. An earthquake of M 6.5 hit within about 500 km of today's epicenter on December 25, 1989, part of a series with foreshocks of M 5.6 on March 16, 1989 and M 5.1 on December 25, 1989. The earthquake which began this activity in March, 1989  also followed a solar eclipse which was visible at this epicenter a week earlier on March 16, 1989. Other earthquakes of M>4.9 occurred in the area on March 5, 1955 and January 30, 1959. This is a remarkable occurrence and is direct proof of the triggering capacity of strong tidal stresses associated with eclipses on seismicity, the clearest example in many years. The coincidence of the solar eclipse at this epicenter at the time of this earthquake clearly indicates a direct triggering relationship with the earthquake.

 

"The new moon arrives on June 10 at 10:53 UT. Longitudes which are at local solar midnight at this hour include those near 160 West while those at local solar noon are near 20 East longitude. These include areas from the northern Kermadec/Tonga/Samoa arc, Hawaii and Alaska and the Aleutians in the west and Central Europe and Africa in the east. These areas are most likely to see tidal enhancement of seismicity with this new moon. Other areas could also see an increase in seismicity especially near local solar noon and midnight with a moderately strong to major quake possible in the next week. This is an annular solar eclipse. The maximum will be at 80N 66W and will be visible in northern and central Alaska and central and northern Canada. It will end north of Kamchatka, Russia and could trigger a large earthquake or volcanism in that area. In the U.S. it will be partially visible in Central Alaska, North and South Dakota through much of the eastern and northern U.S., Greenland and Canada beginning in the region of the Virgin Islands and Puerto Rico. A strong to major earthquake is likely within several days of this eclipse, most likely in eastern Asia or the Caribbean." (June 7-9, 2021)

 

This was further noted in the previous issue of this summary as:

 

 

"The path of this eclipse does not cover many major seismic zones. As noted above it begins near the Virgin Islands where a series of unusual moderate earthquakes has been occurring over the past two days in the Anguilla area. This continued today with an M 3.6, 3.8 and 4.0. Other areas of interest on this eclipse path include the Baffin Bay area of Canada and the North Geomagnetic Pole which will see a total eclipse. Unusual seismicity in these areas is a possibility at this time. An M 2.1 did occur on the eclipse path today in the Baffin Bay and it will be interesting to see what effect this alignment has on the geomagnetic field as it passes over. Central and Northern Alaska saw an unusual M 6.1 near Fairbanks last week and aftershocks and perhaps a separate mainshock are likely in this area in the next several days." (June 9-10, 2021)

 

 

O: 10JUN2021 11:20:14  60.1N   73.9W mb=4.6  EMSC   UNGAVA PENINSULA, QUEBEC, CANA

O: 10JUN2021 11:20:13  60.2N   74.3W MB=4.8  ECAN OF POVUNGNITUK, QC             

P:  9JUN2021 134485    59.0N   76.0W 2.0-3.9 ABAAA  Quebec, Canada             

P: 10JUN2021 134491    60.0N   79.0W 2.5-4.2 AABAA  Baffin/Davis Strait Canada 

 

The strongest earthquakes in the U.S. or Canada today were a pair of M 4.2 events in the Fort McPherson of Northwest Territories, Canada.  The partial annular eclipse was visible at this epicenter around 11:00 UT on June 10. Earthquakes of M 4.2-4.3 occurred within about 200 km of this epicenter on  February 10, 2021 and December 21, 2020, but the last such event of significantly larger magnitude in this area was an M 5.0 on December 22, 2017. Forecast 134503 expected this area would see enhanced seismicity in early June.

 

O: 11JUN2021 07:05:15  66.7N  135.4W MB=4.2  ECAN OF FORT MCPHERSON, NT          

O: 11JUN2021 07:05:00  66.7N  135.9W MB=4.2  ECAN of Fort McPherson, NT          

P:  6JUN2021 134503    64.0N  138.0W 3.0-4.7 BCAAA  Northern Alaska            

 

 

The strongest earthquake in the world today was an M 5.7 in Costa Rica. NEIC reported it was felt in Costa Rica with maximum intensity VI at Chacanita, Puntarenas,V in Esparta and IV in Jaco and Atenas. Lesser shaking occurred in Samara, AGuanacasts, Papuera, Santa Cruz, Miramar, Juntas, and Santiago, Alajuela. The last earthquake of equal or larger magnitude in Costa Rica was an M 6.0 on August 24, 2020. Forecast 134282 had expected today's event was likely within about 50 km around June 9.

 

O: 10JUN2021 23:27:00   9.0N   85.3W Mw=5.7  EMSC   OFF COAST OF COSTA RICA      

P:  9JUN2021 134282     9.0N   86.0W 3.5-5.0 AAAAA  Costa Rica                 

 

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: 11JUN2021 05:12:46  23.9N  121.5E ML=5.0  TAI    Hualien, Taiwan              

O: 11JUN2021 05:12:48  23.9N  121.7E Mw=4.9  EMSC   TAIWAN

O: 11JUN2021 05:14:22  23.9N  121.5E ML=4.3  EMSC   TAIWAN

P:  8JUN2021 134361    24.0N  122.0E 4.0-5.5 BAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity IV in Hualien, III in Nantou, II in Taichung, Yilan, Changhua, Yunlin and I in Taitung, Chiayi, Taoyuan, Miaoli, Hsinchu Counties, Taiwan.

 

O: 10JUN2021 11:46:10  24.5N  102.1E mb=5.1  EMSC   YUNNAN, CHINA                

P: 10JUN2021 134354    28.0N  101.0E 4.0-5.4 ACAAA  Myanmar                    

 

NEIC reported this earthquake of M 5.1 in Yunnan, China was felt with intensity II-III in the area(s) of Yunnan, China at Jimma.

 

O: 10JUN2021 20:15:58  53.8N  160.9E mb=3.8  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  7JUN2021 134480    53.0N  159.0E 4.0-5.7 BABAA  Kamchatka                  

 

INDONESIA AND PHILIPPINES

 

O: 11JUN2021 04:00:16   0.0N   96.7E ML=4.3  EMSC   NIAS REGION, INDONESIA       

P:  6JUN2021 134288     0.0N   98.0E 4.0-5.4 BABAA  So. Sumatera               

 

O: 11JUN2021 02:23:45   0.1N  124.3E Mw=5.5  EMSC   MINAHASA, SULAWESI, INDONESIA

O: 10JUN2021 09:23:52   0.0S  124.4E ML=4.6  EMSC   MOLUCCA SEA

O: 10JUN2021 10:50:29   0.9N  125.1E ML=4.0  EMSC   MOLUCCA SEA                  

P:  7JUN2021 134286     0.0N  124.0E 4.0-5.5 BAAAA  Mindanao, Philippines      

 

O: 11JUN2021 04:47:59   3.7N   97.0E ML=4.4  EMSC   NORTHERN SUMATRA, INDONESIA  

P:  6JUN2021 134289     4.0N   96.0E 4.0-5.5 BAAAA  Nicobar Islands            

 

O: 11JUN2021 02:07:55   4.2S  142.9E ML=4.2  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P:  4JUN2021 134307     5.0S  144.0E 4.0-5.4 CAAAA  Papua New Guinea           

 

O: 10JUN2021 10:12:47   4.9S  102.9E mb=5.1  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  5JUN2021 134310     4.0S  103.0E 4.0-5.5 BAAAA  So. of Sumatera            

 

O: 11JUN2021 07:00:49   5.9S  146.2E mb=5.1  EMSC   EASTERN NEW GUINEA REG., P.N.G

P:  5JUN2021 134302     5.0S  146.0E 4.0-5.6 CAAAA  New Ireland                

P:  8JUN2021 134302     7.0S  145.0E 4.0-5.5 ABAAA  New Ireland                

 

NEIC reported this earthquake of M 5.1 in New Guinea was felt with intensity II-III in the area(s) of New Guinea at Kainantu.

 

O: 11JUN2021 01:34:04   6.9S  125.3E mb=4.4  EMSC   BANDA SEA                    

P:  9JUN2021 134294     5.0S  126.0E 4.0-5.4 ABAAA  Ceram area                 

 

 

CENTRAL AND SOUTH AMERICA

 

O: 10JUN2021 10:08     35.0S   71.9W mb=4.3  GUC    O'Higgins at Chepica, Paredone

P:  7JUN2021 134540    36.0S   73.0W 4.0-5.5 BAAAA  Central Chile              

 

GUC reported this earthquake was felt with intensity IV in  O'Higgins at Chepica, Paredones, Peralillo, Pichilemu, Piumagque, San Fernando and II in Mostazal, IV in Maule at Iloca, Llico, Talca, III in Constitucion, Curico, Hualane, Romeral, Tenio and Vichuquen, Chile.

 

O: 10JUN2021 16:43     28.1S   70.7W mb=4.3  GUC    Atacama at Copiapo, Tierra Ama

P:  8JUN2021 134527    28.0S   71.0W 4.0-5.5 AAAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity   IV in  Atacama at Copiapo, Tierra Amarilla and IIII in Alto del Carmen, Huasco, Vallenar, Chile.

 

O: 10JUN2021 23:27:00   9.0N   85.3W Mw=5.7  EMSC   OFF COAST OF COSTA RICA      

P:  9JUN2021 134282     9.0N   86.0W 3.5-5.0 AAAAA  Costa Rica                 

 

O: 11JUN2021 01:43:45  13.7N   92.7W ML=4.0  EMSC   OFF THE COAST OF GUATEMALA    

O: 10JUN2021 20:18:05  14.1N   91.5W mb=4.2  EMSC   GUATEMALA                    

P:  8JUN2021 134323    14.0N   91.0W 3.5-5.3 AAAAA  Guatemala                  

 

O: 10JUN2021 08:48:36  16.3N   93.9W ML=4.0  EMSC   CHIAPAS, MEXICO              

P:  9JUN2021 134320    15.0N   94.0W 3.5-5.3 ABAAA  Chiapas, Mexico            

 

O: 10JUN2021 17:42:16  19.0N   66.1W mb=4.3  EMSC   PUERTO RICO REGION           

O: 10JUN2021 17:42:16  19.0N   66.1W mb=3.9  ANSS   PUERTO RICO REGION           

O: 10JUN2021 19:32:15  19.1N   66.1W Md=3.1  EMSC   PUERTO RICO REGION

P:  9JUN2021 134326    18.0N   65.0W 3.0-4.9 AAAAA  Leeward Islands            

 

NEIC reported this earthquake of M 3.9-4.3 in Puerto Rico was felt with intensity II-III in the area(s) of Puerto Rico in San Juan, Dorado, Guaynabo, Vega Baja and Toa Alta.

 

O: 10JUN2021 08:58:31  19.3N   63.7W ML=3.0  EMSC   VIRGIN ISLANDS REGION        

P: 10JUN2021 134343    20.0N   64.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

O: 11JUN2021 00:20:55  19.8N   73.8W ML=3.1  EMSC   HAITI REGION                 

P:  6JUN2021 134344    20.0N   71.0W 3.0-4.5 BABAA  Bahamas/No. Caribbean      

 

O: 10JUN2021 14:16:09  27.2S   63.4W mb=4.4  EMSC   SANTIAGO DEL ESTERO, ARGENTINA

P:  4JUN2021 134527    28.0S   67.0W 4.0-5.6 CACAA  Argentina                  

 

O: 10JUN2021 16:43:51  28.0S   70.9W mb=4.6  EMSC   ATACAMA, CHILE               

P:  8JUN2021 134527    28.0S   71.0W 4.0-5.5 AAAAA  Coast Central Chile        

 

NEIC reported this earthquake of M 4.6 in Central Chile was felt with intensity II-III in the area(s) of Central Chile in Copiapo, Atacama.

 

O: 10JUN2021 14:14:27  35.0S   71.7W ML=4.3  EMSC   MAULE, CHILE                 

P:  7JUN2021 134540    36.0S   73.0W 4.0-5.5 BAAAA  Central Chile               

 

AFRICA AND EUROPE

 

O: 10JUN2021 13:31:41  12.8S   45.6E ML=3.4  EMSC   MAYOTTE REGION               

P:  4JUN2021 134514    12.0S   45.0E 3.0-4.7 CAAAA  Madagascar area            

 

O: 10JUN2021 08:54:17   3.1S   28.3E Mw=5.0  EMSC   LAKE TANGANYIKA REGION, CONGO

P:  5JUN2021 134299     2.0S   29.0E 3.0-4.5 BBAAA  Lake Victoria area         

 

O: 10JUN2021 15:23:27  67.2N   18.8W ML=3.2  EMSC   ICELAND REGION               

 

SOUTHWEST PACIFIC

 

O: 10JUN2021 12:40:42  20.5S  178.0W mb=4.3  EMSC   FIJI REGION                  

P:  7JUN2021 134537    21.0S  177.0W 4.0-5.6 BAAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 10JUN2021 15:48:13  32.5S  179.6E mb=4.4  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  6JUN2021 134547    32.0S  178.0W 4.0-5.8 BABAA  So. Kermadec Islands       

 

O: 11JUN2021 05:36:19  35.5S  179.0E ML=4.0  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P:  6JUN2021 134544    37.0S  178.0E 3.0-4.5 BBAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 10JUN2021 11:35:46  42.2N  142.9E mb=4.6  EMSC   HOKKAIDO, JAPAN REGION

O: 10JUN2021 09:56:04  41.1N  142.3E mb=4.8  EMSC   HOKKAIDO, JAPAN REGION       

P:  9JUN2021 134436    41.0N  141.0E 3.5-5.4 AAAAA  Hokkaido, Japan            

 

O: 11JUN2021 04:44:32  46.5N  152.3E mb=4.4  EMSC   KURIL ISLANDS                

P:  8JUN2021 134465    45.0N  152.0E 3.5-5.7 BBAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

 

O: 10JUN2021 13:07:12  33.5N  116.8W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 11JUN2021 03:06:55  31.2N  115.6W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO      

O: 10JUN2021 07:05:36  31.4N  114.4W ML=3.6  EMSC   GULF OF CALIFORNIA           

O: 10JUN2021 21:54:51  30.8N  114.4W ML=3.2  EMSC   GULF OF CALIFORNIA

P:  4JUN2021 134348    28.0N  112.0W 3.5-4.9 CCBAA  Gulf of California         

 

O: 10JUN2021 09:33:46  31.5N  115.6W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO      

O: 11JUN2021 03:24:56  33.0N  115.5W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 11JUN2021 03:35:33  33.0N  115.5W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 11JUN2021 03:44:37  33.0N  115.5W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 10JUN2021 09:45:42  33.2N  115.7W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 10JUN2021 17:10:19  33.2N  116.1W ML=2.9  EMSC   SOUTHERN CALIFORNIA

O: 11JUN2021 00:01:17  32.9N  115.7W ML=2.1  EMSC   SOUTHERN CALIFORNIA          

P:  5JUN2021 134408    34.4N  116.5W 2.5-4.9 CBAAA  So. California             

 

O: 10JUN2021 18:19:48  33.5N  116.8W Ml=2.4  EMSC   SOUTHERN CALIFORNIA          

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 BAAAA  So. California              

 

O: 11JUN2021 01:25:11  33.8N  117.1W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P:  7JUN2021 134404    33.7N  117.5W 2.5-4.8 BAAAA  So. California             

 

O: 10JUN2021 21:49:41  35.8N  117.7W ML=2.1  EMSC   CENTRAL CALIFORNIA           

P:  9JUN2021 134410    35.9N  117.7W 2.5-5.1 AAAAA  So. California             

 

O: 10JUN2021 21:05:45  36.0N  115.3W ml=2.1  EMSC   NEVADA                       

P:  9JUN2021 134408    35.5N  116.4W 2.5-5.1 AAAAA  So. California             

 

O: 11JUN2021 06:15:06  36.4N  118.0W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P:  7JUN2021 134365    36.1N  118.1W 2.5-5.0 BAAAA  California/Nevada area     

 

O: 11JUN2021 03:02:52  36.6N  121.1W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 10JUN2021 134375    36.4N  121.0W 2.5-4.4 AAAAA  Central California         

 

O: 11JUN2021 01:19:55  37.5N  118.9W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P:  9JUN2021 134368    37.5N  118.6W 2.5-4.9 AAAAA  California/Nevada area     

P:  9JUN2021 134370    38.0N  118.8W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 11JUN2021 06:25:58  39.2N  117.4W ml=2.3  EMSC   NEVADA                       

P:  7JUN2021 134431    40.0N  117.9W 2.5-4.6 BAAAA  California/Nevada area     

 

 

ALASKA

 

O: 10JUN2021 20:46:43  57.9N  155.9W ML=3.2  EMSC   ALASKA PENINSULA             

P:  9JUN2021 134472    54.7N  156.9W 3.5-4.9 ACAAA  Alaska Peninsula           

 

O: 11JUN2021 05:52:55  66.6N  147.5W ML=3.3  EMSC   NORTHERN ALASKA              

P:  9JUN2021 134498    62.8N  149.1W 3.2-5.0 ACAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 11JUN2021 02:59:22  42.2N  126.7W ML=2.6  EMSC   OFF COAST OF OREGON

O: 11JUN2021 01:06:51  43.4N  126.8W ML=2.8  EMSC   OFF COAST OF OREGON          

P:  4JUN2021 134457    42.5N  126.8W 3.0-4.4 CAAAA  Off Coast of Oregon        

 

O: 11JUN2021 07:05:15  66.7N  135.4W MB=4.2  ECAN OF FORT MCPHERSON, NT          

O: 11JUN2021 07:05:00  66.7N  135.9W MB=4.2  ECAN of Fort McPherson, NT          

P:  6JUN2021 134503    64.0N  138.0W 3.0-4.7 BCAAA  Northern Alaska            

 

The partial annular eclipse was visible at this epicenter around 11:00 UT on June 10.

 

ROCKY MOUNTAINS REGION

 

O: 10JUN2021 15:10:07  44.4N  115.2W Ml=2.0  EMSC   SOUTHERN IDAHO               

P:  7JUN2021 134446    44.5N  115.2W 2.0-4.0 BAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 10JUN2021 17:14:45  34.2N   96.4W ML=2.1  EMSC   OKLAHOMA                     

P:  8JUN2021 134419    34.0N   97.0W 2.0-4.4 AAAAA  Southern Plains             

 

O: 11JUN2021 07:02:02  35.1N   95.3W mb=2.3  EMSC   OKLAHOMA                     

P:  4JUN2021 134419    35.0N   96.0W 2.0-4.4 CAAAA  Southern Plains            

 

O: 10JUN2021 11:31:14  37.7N   97.2W mb=2.9  EMSC   KANSAS                        

P:  7JUN2021 134420    37.0N   98.0W 2.0-4.3 BAAAA  Southern Plains            

 

NEIC reported this earthquake of M 2.9 in Wichita, Kansas was felt with intensity II-III in the area(s) of Wichita, Kansas.

 

O: 11JUN2021 03:20:44  72.0N   75.1W MB=2.3  ECAN Pond Inlet, NU                 

P:  9JUN2021 134508    71.0N   75.0W 2.5-4.1 AAAAA  Baffin/Davis Strait Canada 

 

The annular eclipse was fully visible at this epicenter at 10:26 UT on June 10.

 

O: 10JUN2021 12:52:34  42.3N   81.1W MB=2.1  ECAN Lake Erie                      

P: 10JUN2021 134459    41.0N   81.0W 2.0-3.9 ABAAA  Ohio/Lake Erie             

 

O: 10JUN2021 11:20:14  60.1N   74.0W MB=4.8  ECAN Puvirnituq, QC                 

P:  9JUN2021 134485    59.0N   76.0W 2.0-3.9 AAAAA  Quebec, Canada             

P: 10JUN2021 134491    60.0N   79.0W 2.5-4.2 AABAA  Baffin/Davis Strait Canada 

 

The annular eclipse was fully visible at this epicenter at 10:04 UT on June 10.

 

O: 10JUN2021 05:36:16  61.0N   61.2W MB=2.6  ECAN Resolution Island, NU           

P:  4JUN2021 134491    61.0N   58.0W 2.5-4.1 CABAA  Baffin/Davis Strait Canada 

 

The annular eclipse was fully visible at this epicenter at 10:06 UT on June 10.

 

O:  9JUN2021 09:28:02  47.5N   70.4W MB=0.9  ECAN Charlevoix Seismic Zone        

P:  8JUN2021 134443    47.0N   70.0W 2.0-3.9 AAAAA  Maine                      

 

O: 10JUN2021 11:20:14  60.1N   73.9W mb=4.6  EMSC   UNGAVA PENINSULA, QUEBEC, CANA

O: 10JUN2021 11:20:13  60.2N   74.3W MB=4.8  ECAN OF POVUNGNITUK, QC             

P:  9JUN2021 134485    59.0N   76.0W 2.0-3.9 ABAAA  Quebec, Canada             

P: 10JUN2021 134491    60.0N   79.0W 2.5-4.2 AABAA  Baffin/Davis Strait Canada 

 

HAWAII

 

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

 

SOLAR ECLIPSE TRIGGERS UNPRECEDENTED QUAKE IN UNGAVA, QUEBEC, CANADA

 

EARTHQUAKE SUMMARY FOR JUNE 9, 2021

 

The annular solar eclipse occurred today. At least one significant earthquake appears to have been directly triggered by this tidal alignment. According to the NASA solar eclipse page the Annular eclipse passed over an area of Quebec, Canada at 60N 74W at 10:04 UT. A bit more than hour later an earthquake of M 4.6 hit at 60N 74W in the Ungava Peninsula, Quebec Canada. Earthquakes Canada gives this event at M 4.9 in the region east of Povungnituk south of Baffin Bay, Canada. This is not an insignificant regional event. It is the largest within about 500 km of this epicenter in at least 30 years. The only larger earthquake in the past 30 years within about 1000 km of this epicenter occurred on October 13, 1992 (M 4.8). No events of M>=4.9 had hit this area in at least 30 years. An earthquake of M 6.5 hit within about 500 km of today's epicenter on December 25, 1989, part of a series with foreshocks of M 5.6 on March 16, 1989 and M 5.1 on December 25, 1989. The earthquake which began this activity in March, 1989 also followed a solar eclipse which was visible at this epicenter a week earlier on March 16, 1989. Other earthquakes of M>4.9 occurred in the area on March 5, 1955 and January 30, 1959. This is a remarkable occurrence and is direct proof of the triggering capacity of strong tidal stresses associated with eclipses on seismicity, the clearest example in many years. The coincidence of the solar eclipse at this epicenter at the time of this earthquake clearly indicates a direct triggering relationship with the earthquake.

 

"The new moon arrives on June 10 at 10:53 UT. Longitudes which are at local solar midnight at this hour include those near 160 West while those at local solar noon are near 20 East longitude. These include areas from the northern Kermadec/Tonga/Samoa arc, Hawaii and Alaska and the Aleutians in the west and Central Europe and Africa in the east. These areas are most likely to see tidal enhancement of seismicity with this new moon. Other areas could also see an increase in seismicity especially near local solar noon and midnight with a moderately strong to major quake possible in the next week. This is an annular solar eclipse. The maximum will be at 80N 66W and will be visible in northern and central Alaska and central and northern Canada. It will end north of Kamchatka, Russia and could trigger a large earthquake or volcanism in that area. In the U.S. it will be partially visible in Central Alaska, North and South Dakota through much of the eastern and northern U.S., Greenland and Canada beginning in the region of the Virgin Islands and Puerto Rico. A strong to major earthquake is likely within several days of this eclipse, most likely in eastern Asia or the Caribbean." (June 7-9, 2021)

 

This was further noted in the previous issue of this summary as:

 

 

"The path of this eclipse does not cover many major seismic zones. As noted above it begins near the Virgin Islands where a series of unusual moderate earthquakes has been occurring over the past two days in the Anguilla area. This continued today with an M 3.6, 3.8 and 4.0. Other areas of interest on this eclipse path include the Baffin Bay area of Canada and the North Geomagnetic Pole which will see a total eclipse. Unusual seismicity in these areas is a possibility  at this time. An M 2.1 did occur on the eclipse path today in the Baffin Bay and it will be interesting to see what effect this alignment has on the geomagnetic field as it passes over. Central and Northern Alaska saw an unusual M 6.1 near Fairbanks last week and aftershocks and perhaps a separate mainshock are likely in this area in the next several days." (June 9, 2021)

 

Forecasts 134485 and 134491 had expected today's activity within about 150-250 km of today's epicenter in Quebec or the Baffin Bay area of Canada was likely around June 9-10. This activity may also have been promoted by energy from  the M 8.1 in the Kermadec Islands of March 4, 2021 and the M 6.6 in Sumatra of May 14, 2021 as it is at the third node (120 degrees) from those epicenters. Current enhanced seismicity in the Virgin Islands is also at this distance from the Kermadec Islands.

 

O: 10JUN2021 11:20:14  60.1N   73.9W mb=4.6  EMSC   UNGAVA PENINSULA, QUEBEC, CANA

O: 10JUN2021 11:20:13  60.2N   74.3W MB=4.9  ECAN OF POVUNGNITUK, QC             

P:  9JUN2021 134485    59.0N   76.0W 2.0-3.9 ABAAA  Quebec, Canada             

P: 10JUN2021 134491    60.0N   79.0W 2.5-4.2 AABAA  Baffin/Davis Strait Canada 

 

An earthquake of M 2.4 also occurred today in New Jersey. It was not reported felt in this area. It was also likely promoted by high tidal stresses associated with the new moon. The only other event of M>=2.4 in New Jersey in the past year was an M 3.1 on September 9, 2020. An M 4.1 also occurred in New Jersey on November 30, 2017.

 

O:  9JUN2021 11:52:35  39.6N   74.3W mb=2.4  EMSC   NEW JERSEY                   

 

Earthquakes of M 4.4, 3.8 and M 4.0 were also felt in the Virgin Islands and Anguilla today. The solar eclipse was first observed in this area. Today's events follows similar activity in the area over the past several days and was reported by NEIC to have been felt with intensity II in San Juan, Puerto Rico. This activity was reviewed in the previous issue of this report as:

 

"A series of moderate earthquakes also hit in the northeastern Caribbean near the Virgin Islands  and Anguilla region of the Leeward Islands with M 4.6, 4.5, 4.1 ... This is the area in which the coming solar eclipse will first be seen. It is likely that this series was enhanced by tidal effects associated with the coming new moon. The last earthquake of M>=4.6 in this region was an M 4.9 on August 31, 2019 and prior to that an M 4.6 on June 25, 2014. Forecast 134343 had expected today's activity within about 50 km was likely around June 10. This activity is at the third node (120 degrees) from the M 8.1 in the Kermadec Islands of March 4 and may have been promoted by energy from that source." (June 7, 2021)

 

O: 10JUN2021 08:58:33  19.6N   63.7W Md=3.9  EMSC   VIRGIN ISLANDS REGION

O: 10JUN2021 00:29:34  19.7N   63.5W Md=4.1  EMSC   NORTH OF ANGUILLA, LEEWARD ISL.

O:  9JUN2021 08:09:31  19.3N   63.3W mb=4.4  EMSC   ANGUILLA REGION, LEEWARD ISLAN

P: 10JUN2021 134343    20.0N   64.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

An M 5.0 earthquake was widely felt in the area of Lake Tanganyika, Congo today. NEIC reported maximum intensity V in the Congo (DR) at Bukavu, Kabare; IV in KLalima and III in Uvira. This follows volcanic eruptions in the area of Mount Nyirangongo in the region of the DR Congo of May 23-27, 2021 which is about 150 km north of Lake Tanganyika and occurred with the last full moon. The last earthquake in the Lake Tanganyika area of M>=5.0 was an M 5.3 on October 30, 2019. Forecast 134299 had expected enhanced seismicity in this area was likely in early June.

 

O: 10JUN2021 08:54:17   3.1S   28.3E Mw=5.0  EMSC   LAKE TANGANYIKA REGION, CONGO

P:  5JUN2021 134299     2.0S   29.0E 3.0-4.5 BBAAA  Lake Victoria area          

 

An earthquake of M 4.0 was widely felt in Utah today. It was followed by a smaller aftershock. NEIC reported this activity was felt in Utah at Heber City, Mountain Home, Tabiona, Provo, Lindon, Spanish Fork, Lehi, Saratoga Springs, South Jordan and Salt Lake City. It occurred near local solar noon and was probably triggered by strong tidal stresses associated with today's new moon and eclipse which maximize near this hour.  This is not an aftershock of the M 5.7 of March 18, 2020 as it occurred about 150 km southeast of that epicenter. The only events in the area within about 100 km of today's epicenter with M>=4 occurred as an M 4.0 on May 25, 2016. Forecast 134433 had expected today's activity was likely around June 8. This epicenter is at 101 degrees from the M 7.4 in Qinghai, China of May 21  and was probably promoted by energy from that source.

 

O: 09JUN2021 19:55:21  40.3N  111.1W ML=2.5  EMSC   UTAH

O:  9JUN2021 19:52:50  40.3N  111.0W mb=4.0  EMSC   UTAH                         

P:  8JUN2021 134433    40.6N  106.6W 2.0-4.1 AACAA  Colorado area         

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O:  9JUN2021 11:35:21  31.8N   69.8E mb=4.4  EMSC   PAKISTAN                     

P:  7JUN2021 134399    30.0N   70.0E 3.8-5.3 ABAAA  Pakistan                   

 

O: 10JUN2021 06:42:13  36.6N   70.9E mb=4.0  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  7JUN2021 134384    36.0N   71.0E 3.8-5.2 BAAAA  Hindu Kush/Pakistan        

 

O:  9JUN2021 22:42:31  23.9N  121.6E mb=4.1  EMSC   TAIWAN                       

O:  9JUN2021 22:42:31  23.9N  121.6E ML=4.3  TAI    Hualien, Taiwan              

P:  8JUN2021 134361    24.0N  122.0E 4.0-5.5 AAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity IV in Hualien and I in Yunlin, Changhua and Nantou Counties, Taiwan.

 

INDONESIA AND PHILIPPINES

 

O:  9JUN2021 21:02:07   2.3S  140.2E ML=4.3  EMSC   NEAR N COAST OF PAPUA, INDONES

P:  7JUN2021 134307     2.0S  140.0E 4.0-5.4 AAAAA  Papua New Guinea           

 

O: 10JUN2021 06:06:03   2.5S  136.6E ML=4.3  EMSC   NEAR N COAST OF PAPUA, INDONES

P:  7JUN2021 134307     2.0S  140.0E 4.0-5.4 BACAA  Papua New Guinea           

 

O:  9JUN2021 22:00:32   3.4N  126.7E mb=4.5  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 10JUN2021 134285     3.0N  129.0E 4.0-5.4 AABAA  Halmahera                  

 

O:  9JUN2021 08:19:18   4.4S  127.6E ML=4.2  EMSC   BANDA SEA                    

P:  8JUN2021 134294     4.0S  128.0E 4.0-5.7 AAAAA  Ceram area                 

 

O:  9JUN2021 22:11:46   5.9S  123.9E ML=4.1  EMSC   BANDA SEA                    

P:  9JUN2021 134294     5.0S  126.0E 4.0-5.4 AABAA  Ceram area                 

 

O: 09JUN2021 19:46:54  10.2N  126.4E ML=4.1  EMSC   PHILIPPINE ISLANDS REGION

O: 10JUN2021 04:41:50  10.2N  126.6E ML=4.4  EMSC   PHILIPPINE ISLANDS REGION

O:  9JUN2021 19:03:04  10.2N  126.4E ML=4.0  EMSC   PHILIPPINE ISLANDS REGION    

P:  7JUN2021 134327    11.0N  125.0E 3.5-4.9 AABAA  Luzon, Philippines         

 

O: 09JUN2021 08:11:07   9.1N  126.2E mb=4.5  EMSC   MINDANAO, PHILIPPINES

P:  8JUN2021 134279     9.0N  126.0E 4.0-5.6 AAAAA  Central Philippines        

 

O: 10JUN2021 02:42:23   5.9N  126.2E mb=4.9  EMSC   MINDANAO, PHILIPPINES

O: 09JUN2021 12:16:53   6.8N  125.4E ML=4.6  EMSC   MINDANAO, PHILIPPINES

O:  9JUN2021 18:49:36   5.8N  126.2E mb=4.5  EMSC   MINDANAO, PHILIPPINES        

P:  9JUN2021 134279     7.0N  126.0E 4.0-5.5 ABAAA  Central Philippines        

 

NEIC reported this earthquake of M 4.9 in Mindanao, Philippines was felt with intensity II-III in the area(s) of Mindanao, Philippines at Buayan.

 

CENTRAL AND SOUTH AMERICA

 

O:  9JUN2021 13:59:30  10.3N   86.3W ML=4.3  EMSC   OFF COAST OF COSTA RICA      

P:  9JUN2021 134282     9.0N   86.0W 3.5-5.0 ABAAA  Costa Rica                 

 

O:  9JUN2021 15:39:51  15.5N   95.0W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  7JUN2021 134320    15.0N   95.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O:  9JUN2021 22:17:17  16.6N  100.5W ML=4.4  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  9JUN2021 134336    16.0N  100.0W 3.5-5.4 AAAAA  Oaxaca, Mexico             

 

O:  9JUN2021 15:03:49  17.9N   66.7W Md=3.0  EMSC   PUERTO RICO REGION           

P:  9JUN2021 134326    18.0N   65.0W 3.0-4.9 AABAA  Leeward Islands            

 

O:  9JUN2021 12:21:34  18.8N   64.2W ML=3.1  EMSC   VIRGIN ISLANDS REGION        

P:  9JUN2021 134326    18.0N   65.0W 3.0-4.9 AAAAA  Leeward Islands            

 

O: 10JUN2021 01:11:48  18.8N   70.4W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P:  9JUN2021 134339    18.0N   69.0W 3.4-5.2 AABAA  Puerto Rico                

 

O: 10JUN2021 06:57:21  19.6N   70.7W ML=3.5  EMSC   DOMINICAN REPUBLIC           

P:  6JUN2021 134344    20.0N   71.0W 3.0-4.5 BAAAA  Bahamas/No. Caribbean      

 

O:  9JUN2021 11:41:00  20.4N   70.1W ML=3.3  EMSC   DOMINICAN REPUBLIC REGION    

P:  9JUN2021 134344    20.0N   69.0W 3.0-4.9 AAAAA  Bahamas/No. Caribbean      

 

 

O: 10JUN2021 08:58:33  19.6N   63.7W Md=3.9  EMSC   VIRGIN ISLANDS REGION

O: 10JUN2021 00:29:34  19.7N   63.5W Md=4.1  EMSC   NORTH OF ANGUILLA, LEEWARD ISL.

O:  9JUN2021 08:09:31  19.3N   63.3W mb=4.4  EMSC   ANGUILLA REGION, LEEWARD ISLAN

P: 10JUN2021 134343    20.0N   64.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

AFRICA AND EUROPE

 

O: 10JUN2021 08:54:17   3.1S   28.3E Mw=5.0  EMSC   LAKE TANGANYIKA REGION, CONGO

P:  5JUN2021 134299     2.0S   29.0E 3.0-4.5 BBAAA  Lake Victoria area         

 

SOUTHWEST PACIFIC

 

O: 10JUN2021 05:44:44  15.5S  174.6W mb=4.4  EMSC   TONGA                        

P:  9JUN2021 134515    15.0S  174.0W 4.0-5.5 AAAAA  Samoa Islands              

 

O:  9JUN2021 22:53:34  21.7S  178.9W mb=4.5  EMSC   FIJI REGION                  

P:  7JUN2021 134537    21.0S  177.0W 4.0-5.6 AABAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O:  9JUN2021 06:57:40   4.7S  105.8W mb=4.8  EMSC   CENTRAL EAST PACIFIC RISE    

P: 10JUN2021 134304     4.0S  104.0W 4.0-5.8 AABAA  No. East Pacific Rise      

 

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:  9JUN2021 08:27:22  35.6N  139.6E mb=4.5  EMSC   NEAR S. COAST OF HONSHU, JAPAN

P:  5JUN2021 134391    37.0N  139.0E 3.5-4.9 BBAAA  No. Honshu, Japan          

 

NEIC reported this earthquake of M 4.5 in the Tokyo region of Honshu, Japan was felt with intensity II-III in the area(s) of the Tokyo region of Honshu, Japan in Kanagawa, Tokyo, and Saitama.

 

O:  9JUN2021 13:05:56  40.2N  142.4E Mw=5.0  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  9JUN2021 134436    41.0N  141.0E 3.5-5.4 AAAAA  Hokkaido, Japan            

 

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

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 09JUN2021 19:39:06  30.3N  114.3W ML=3.7  EMSC   GULF OF CALIFORNIA

O:  9JUN2021 19:31:20  30.3N  114.3W ML=3.9  EMSC   GULF OF CALIFORNIA           

P:  4JUN2021 134348    28.0N  112.0W 3.5-4.9 BCBAA  Gulf of California         

 

O: 10JUN2021 00:04:06  32.7N  115.7W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 09JUN2021 05:35:34  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 09JUN2021 17:37:38  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O:  9JUN2021 07:01:18  31.0N  115.2W ML=3.1  EMSC   BAJA CALIFORNIA, MEXICO      

O:  9JUN2021 17:42:37  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

O:  9JUN2021 17:18:43  33.5N  116.8W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California             

 

O:  9JUN2021 15:32:15  33.6N  117.9W Ml=2.0  EMSC   GREATER LOS ANGELES AREA, CALI

P:  7JUN2021 134404    33.7N  117.5W 2.5-4.8 AAAAA  So. California             

 

O:  9JUN2021 10:45:11  34.2N  118.5W Ml=2.0  EMSC   GREATER LOS ANGELES AREA, CALI

P:  8JUN2021 134407    34.0N  118.7W 2.5-5.0 AAAAA  So. California             

 

O:  9JUN2021 13:51:36  35.9N  117.1W Ml=2.7  EMSC   CENTRAL CALIFORNIA            

P:  9JUN2021 134410    35.9N  117.7W 2.5-5.1 AAAAA  So. California             

 

O:  9JUN2021 21:18:30  36.1N  119.7W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P:  6JUN2021 134374    36.1N  120.1W 2.5-4.4 BAAAA  Central California          

 

O:  9JUN2021 14:13:08  36.2N  118.1W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P:  7JUN2021 134365    36.1N  118.1W 2.5-5.0 AAAAA  California/Nevada area     

 

O: 10JUN2021 01:38:19  36.5N  121.1W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P: 10JUN2021 134375    36.4N  121.0W 2.5-4.4 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 at Paicines and Los Banos.

 

O: 10JUN2021 04:00:19  39.5N  122.0W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P:  9JUN2021 134455    40.3N  121.2W 2.5-4.6 AAAAA  Northern California        

 

O:  9JUN2021 20:01:48  39.7N  122.9W MD=2.0  EMSC   NORTHERN CALIFORNIA          

P:  7JUN2021 134378    39.6N  123.4W 2.5-4.7 AAAAA  Central California         

 

O:  9JUN2021 13:49:44  40.4N  124.3W Md=2.5  EMSC   NORTHERN CALIFORNIA          

P:  8JUN2021 134456    40.3N  124.7W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O: 10JUN2021 04:57:36  56.3N  149.3W ML=3.1  EMSC   GULF OF ALASKA

O:  9JUN2021 12:38:47  56.5N  148.4W mb=4.2  EMSC   GULF OF ALASKA               

 

O:  9JUN2021 13:06:00  61.5N  147.8W ML=3.9  EMSC   SOUTHERN ALASKA              

P:  7JUN2021 134497    62.6N  148.4W 3.2-5.0 ABAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.7 in Southern Alaska was felt with intensity II-III in the area(s) of Southern Alaska at Palmer, Chugiak, Eagle River, Glennallen, Girdwood, Fort Richardson and Anchorage.

 

O:  9JUN2021 19:50:09  61.7N  149.7W ml=3.0  EMSC   SOUTHERN ALASKA              

P:  9JUN2021 134498    62.8N  149.1W 3.2-5.0 ABAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  9JUN2021 22:36:57  46.1N  119.0W Md=2.5  EMSC   WASHINGTON                    

P:  6JUN2021 134447    47.7N  117.4W 2.0-4.4 BBBAA  Montana/Idaho              

 

O:  9JUN2021 21:59:43  47.5N  120.3W Md=2.2  EMSC   WASHINGTON                   

P:  9JUN2021 134468    47.5N  121.8W 2.0-3.9 AABAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 09JUN2021 20:45:27  31.7N  104.4W ML=3.3  EMSC   WESTERN TEXAS

O: 10JUN2021 04:41:13  31.7N  104.6W ML=2.8  EMSC   WESTERN TEXAS

 

O:  9JUN2021 05:15:41  31.6N  104.3W ML=2.8  EMSC   WESTERN TEXAS                

P:  7JUN2021 134400    32.5N  104.6W 2.0-4.0 AAAAA  SW U.S.A                   

 

O: 09JUN2021 19:55:21  40.3N  111.1W ML=2.5  EMSC   UTAH

O:  9JUN2021 19:52:50  40.3N  111.0W mb=4.0  EMSC   UTAH                         

P:  8JUN2021 134433    40.6N  106.6W 2.0-4.1 AACAA  Colorado area              

 

O: 09JUN2021 12:52:22  44.3N  115.2W Ml=2.3  EMSC   SOUTHERN IDAHO

O:  9JUN2021 12:35:43  44.3N  115.2W Ml=2.7  EMSC   SOUTHERN IDAHO               

P:  7JUN2021 134446    44.5N  115.2W 2.0-4.0 AAAAA  Montana/Idaho              

 

 

EASTERN U.S./CANADA

 

O:  9JUN2021 11:52:35  39.6N   74.3W mb=2.4  EMSC   NEW JERSEY                   

 

O: 10JUN2021 11:20:14  60.1N   73.9W mb=4.6  EMSC   UNGAVA PENINSULA, QUEBEC, CANA

O: 10JUN2021 11:20:13  60.2N   74.3W MB=4.9  ECAN OF POVUNGNITUK, QC             

P:  9JUN2021 134485    59.0N   76.0W 2.0-3.9 ABAAA  Quebec, Canada             

P: 10JUN2021 134491    60.0N   79.0W 2.5-4.2 AABAA  Baffin/Davis Strait Canada 

 

O:  9JUN2021 09:28:02  47.5N   70.4W MB=0.9  ECAN  Charlevoix Seismic Zone       

P:  8JUN2021 134443    47.0N   70.0W 2.0-3.9 AAAAA  Maine                      

 

O:  9JUN2021 00:23:09  50.6N   64.2W MB=1.8  ECAN Mingan, QC                     

P:  5JUN2021 134443    49.3N   67.5W 2.0-3.9 BBCAA  Maine                       

 

HAWAII

 

O:  9JUN2021 05:13:02  19.4N  155.6W ML=3.3  EMSC   ISLAND OF HAWAII, HAWAII     

P:  8JUN2021 134325    19.3N  155.2W 3.0-4.4 AAAAA  Hawaii                     

 

IMMEDIATE MAJOR SEISMIC EFFECTS FROM SOLAR ECLIPSE UNLIKELY 

 

EARTHQUAKE SUMMARY FOR JUNE 8, 2021

 

The annular solar eclipse will occur early on June 10. This summary expects

some enhanced seismicity with this event as reported in previous issues as:

 

"The new moon arrives on June 10 at 10:53 UT. Longitudes which are at local solar midnight at this hour include those near 160 West while those at local solar noon are near 20 East longitude. These include areas from the northern Kermadec/Tonga/Samoa arc, Hawaii and Alaska and the Aleutians in the west and Central Europe and Africa in the east. These areas are most likely to see tidal enhancement of seismicity with this new moon. Other areas could also see an increase in seismicity especially near local solar noon and midnight with a moderately strong to major quake possible in the next week. This is an annular solar eclipse. The maximum will be at 80N 66W and will be visible in northern and central Alaska and central and northern Canada. It will end north of Kamchatka, Russia and could trigger a large earthquake or volcanism in that area. In the U.S. it will be partially visible in Central Alaska, North and South Dakota through much of the eastern and northern U.S., Greenland and Canada beginning in the region of the Virgin Islands and Puerto Rico. A strong to major earthquake is likely within several days of this eclipse, most likely in eastern Asia or the Caribbean." (June 7-9, 2021)

 

The path of this eclipse does not cover many major seismic zones. As noted above it begins near the Virgin Islands where a series of unusual moderate earthquakes has been occurring over the past two days in the Anguilla area. This continued today with an M 3.6, 3.8 and 4.0. Other areas of interest on this eclipse path include the Baffin Bay area of Canada and the North Geomagnetic Pole which will see a total eclipse. Unusual seismicity in these areas is a possibility  at this time. An M 2.1 did occur on the eclipse path today in the Baffin Bay and it will be interesting to see what effect this alignment has on the geomagnetic field as it passes over. Central and Northern Alaska saw an unusual M 6.1 near Fairbanks last week and aftershocks and perhaps a separate mainshock are likely in this area in the next several days.

 

Forecast 134508 had expected the M 2.1 in Baffin Bay in Nunavit, Canada today was likely within about 100 km of this epicenter around June 9.

 

O:  7JUN2021 20:34:41  72.0N   75.2W MB=2.1  ECAN Pond Inlet, NU                 

P:  9JUN2021 134508    71.0N   75.0W 2.5-4.1 AAAAA  Baffin/Davis Strait Canada 

 

The activity in the Virgin Islands was noted in the previous issue of this

summary as:

 

"A series of moderate earthquakes also hit in the northeastern Caribbean near the Virgin Islands  and Anguilla region of the Leeward Islands with M 4.6, 4.5, 4.1 ... This is the area in which the coming solar eclipse will first be seen. It is likely that this series was enhanced by tidal effects associated with the coming new moon. The last earthquake of M>=4.6 in this region was an M 4.9 on August 31, 2019 and prior to that an M 4.6 on June 25, 2014. Forecast 134343 had expected today's activity within about 50 km was likely around June 10. This activity is at the third node (120 degrees) from the M 8.1 in the Kermadec Islands of March 4 and may have been promoted by energy from that source." (June 7, 2021)

 

 

O: 09JUN2021 01:47:03  19.3N   63.3W mb=4.0  EMSC   ANGUILLA REGION, LEEWARD ISLANDS

O: 08JUN2021 07:37:22  19.4N   64.1W Md=3.8  EMSC   VIRGIN ISLANDS REGION

O:  8JUN2021 09:09:18  19.2N   63.6W ML=3.6  EMSC   VIRGIN ISLANDS REGION        

P: 10JUN2021 134343    20.0N   64.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

The largest earthquake in the world today was an M 5.7 in New Britain. NEIC reported it was felt in New Britain at Kimbe and Kokopo. The last earthquake in New Britain of near-equal or greater magnitude occurred with the new moon on May 11, 2021 with M 5.4. The last of greater magnitude occurred as an M 6.1 on August 25, 2020 and  events of M 6.0-6.1 on February 9 and January 7, 2020. Forecast 134303 had expected today's event within about 200 km of this epicenter was likely around June 9.

 

O:  8JUN2021 10:56:37   5.2S  151.3E Mw=5.7  EMSC   NEW BRITAIN REGION, P.N.G.   

P:  9JUN2021 134303     7.0S  151.0E 4.0-5.4 ABAAA  New Ireland                

 

A moderate earthquake of M 5.3 also occurred off the east coast of Honshu, Japan today. NEIC reported this earthquake of M 5.3 off eastern Honshu, Japan  was felt with intensity II-III in the area(s) of eastern Honshu Japan in Fukushima and Tokyo. It may have been promoted by high tidal stresses as it occurred near local solar midnight, a time when such stresses are maximized. Forecast 134297  had expected activity within about 100 km of this epicenter was likely around June 8.

 

O:  8JUN2021 15:29:01  36.5N  143.0E Mw=5.3  EMSC   OFF EAST COAST OF HONSHU, JAPA

P:  8JUN2021 134397    37.0N  142.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

The aftershocks in the area of southern California largely died out today without a second mainshock. There is a general tendency for the larger events in this aftershock sequence to migrate towards the northwest closer to 103 degrees from the Qinghai China M 7.4 of May 21. The largest event in the general region today was an M 3.0 south of the aftershock zone. An M 3.9 in the Gulf of California continued a series of recent events in that region. The M 3.9 may have been related to strong tidal stresses as it occurred near local solar noon when such stresses are maximized.

 

O:  8JUN2021 20:45:44  30.6N  114.3W ML=3.9  EMSC   GULF OF CALIFORNIA           

P:  4JUN2021 134348    28.0N  112.0W 3.5-4.9 BCBAA  Gulf of California         

 

O:  8JUN2021 17:35:05  31.1N  115.4W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

O:  8JUN2021 17:06:24  33.1N  116.0W Ml=2.6  EMSC   SOUTHERN CALIFORNIA          

O:  8JUN2021 12:37:10  33.5N  116.9W Ml=2.6  EMSC   SOUTHERN CALIFORNIA          

O: 08JUN2021 17:09:17  33.1N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 09JUN2021 00:39:35  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 09JUN2021 05:35:34  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California             

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O:  8JUN2021 13:26:41  34.3N   81.7E mb=4.4  EMSC   WESTERN XIZANG               

P:  2JUN2021 134395    35.0N   78.0E 3.8-5.2 CABAA  Northern India             

 

O:  8JUN2021 19:28:38  36.2N   70.9E mb=4.0  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  7JUN2021 134384    36.0N   71.0E 3.8-5.2 AAAAA  Hindu Kush/Pakistan        

 

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

 

INDONESIA AND PHILIPPINES

 

O:  8JUN2021 15:27:06   0.1S   98.4E ML=4.3  EMSC   KEPULAUAN BATU, INDONESIA    

O:  8JUN2021 16:32:33   0.3N   96.8E ML=4.6  EMSC   NIAS REGION, INDONESIA       

P:  6JUN2021 134288     0.0N   98.0E 4.0-5.4 AAAAA  So. Sumatera               

 

O:  8JUN2021 07:03:56   1.6N  127.0E ML=4.2  EMSC   HALMAHERA, INDONESIA         

P: 10JUN2021 134285     3.0N  129.0E 4.0-5.4 ABBAA  Halmahera                  

 

O:  9JUN2021 00:17:07   4.2N  125.9E ML=4.1  EMSC   KEPULAUAN SANGIHE, INDONESIA 

P:  3JUN2021 134287     5.0N  125.0E 4.0-5.7 CAAAA  Mindanao, Philippines      

 

O:  8JUN2021 10:01:17   4.2S  137.1E ML=4.0  EMSC   PAPUA, INDONESIA             

P:  5JUN2021 134314     4.0S  134.0E 4.0-5.4 BACAA  West Irian, PNG            

 

O:  8JUN2021 22:57:54   4.6S  154.0E mb=4.6  EMSC   BOUGAINVILLE REGION, P.N.G.  

P:  5JUN2021 134300     4.0S  154.0E 4.0-5.5 BAAAA  New Britain                

 

O:  8JUN2021 14:58:36   5.1S  131.8E ML=4.2  EMSC   BANDA SEA                    

P:  8JUN2021 134315     5.0S  130.0E 4.0-5.4 AABAA  West Irian, PNG            

 

O:  8JUN2021 10:56:37   5.2S  151.3E Mw=5.7  EMSC   NEW BRITAIN REGION, P.N.G.   

P:  9JUN2021 134303     7.0S  151.0E 4.0-5.4 ABAAA  New Ireland                

 

O:  8JUN2021 21:33:23   5.9S  153.2E mb=4.7  EMSC   NEW IRELAND REGION, P.N.G.   

P:  8JUN2021 134300     7.0S  153.0E 4.0-5.4 ABAAA  New Britain                

 

O:  9JUN2021 03:48:52   8.0S  120.3E ML=4.3  EMSC   FLORES REGION, INDONESIA     

P:  4JUN2021 134313     8.0S  119.0E 4.0-5.5 BAAAA  Sumbawa Island area        

P:  7JUN2021 134296     8.0S  122.0E 4.0-5.4 AABAA  Flores Island area         

 

O:  8JUN2021 10:51:16   8.0S  127.6E ML=4.2  EMSC   EAST TIMOR REGION             

P:  9JUN2021 134291     6.0S  128.0E 4.0-5.4 ABAAA  Banda Sea                  

 

CENTRAL AND SOUTH AMERICA

 

O: 08JUN2021 14:07:58  16.7S   74.1W mb=4.6  EMSC   NEAR COAST OF SOUTHERN PERU

O:  8JUN2021 07:21:47  16.7S   74.1W mb=4.8  EMSC   NEAR COAST OF SOUTHERN PERU  

P:  5JUN2021 134518    17.0S   73.0W 4.0-5.8 BAAAA  So. Peru/Bolivia           

 

O:  8JUN2021 09:40:42  18.7N   65.3W Md=3.5  EMSC   PUERTO RICO REGION           

P:  9JUN2021 134326    18.0N   65.0W 3.0-4.9 AAAAA  Leeward Islands             

 

O:  9JUN2021 03:20:28  19.0N   66.7W Md=3.0  EMSC   PUERTO RICO REGION           

P:  9JUN2021 134326    18.0N   65.0W 3.0-4.9 AABAA  Leeward Islands            

 

 

O: 09JUN2021 01:47:03  19.3N   63.3W mb=4.0  EMSC   ANGUILLA REGION, LEEWARD ISLANDS

O: 08JUN2021 07:37:22  19.4N   64.1W Md=3.8  EMSC   VIRGIN ISLANDS REGION

O:  8JUN2021 09:09:18  19.2N   63.6W ML=3.6  EMSC   VIRGIN ISLANDS REGION        

P: 10JUN2021 134343    20.0N   64.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

O:  8JUN2021 07:42:24  30.1S   70.8W mb=4.8  EMSC   COQUIMBO, CHILE              

P:  4JUN2021 134543    30.0S   72.0W 4.0-5.6 BAAAA  Coast Central Chile        

 

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

 

O:  8JUN2021 21:35:48  39.3S   75.0W Mw=4.3  EMSC   OFF COAST OF LOS LAGOS, CHILE

P:  8JUN2021 134541    39.0S   73.0W 4.0-5.6 AABAA  Central Chile              

 

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O:  9JUN2021 02:14:19  10.9S  162.4E mb=4.8  EMSC   SOLOMON ISLANDS              

P: 10JUN2021 134523    11.0S  161.0E 4.0-5.4 AAAAA  Vanuatu Islands            

 

O:  8JUN2021 07:52:30  17.9S  178.2W mb=4.2  EMSC   FIJI REGION                  

P:  5JUN2021 134522    17.0S  178.0W 4.0-5.8 BAAAA  Tonga Islands              

P:  8JUN2021 134522    19.0S  178.0W 4.0-5.7 ABAAA  Tonga Islands              

 

O:  8JUN2021 18:17:30  26.7S  176.9W mb=4.9  EMSC   SOUTH OF FIJI ISLANDS        

P:  4JUN2021 134530    28.0S  177.0W 4.0-5.5 BBAAA  No. Kermadec Islands       

 

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

 

OCEAN RIDGES

 

O:  9JUN2021 06:57:40   4.8S  105.7W mb=4.8  EMSC   CENTRAL EAST PACIFIC RISE    

P: 10JUN2021 134304     4.0S  104.0W 4.0-5.8 AABAA  No. East Pacific Rise      

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

 

O:  8JUN2021 10:55:11  31.1S  179.2E mb=4.5  EMSC   KERMADEC ISLANDS REGION      

 

O:  8JUN2021 07:16:05  47.6S  165.9E ML=3.9  EMSC   OFF W. COAST OF S. ISLAND, N.Z

P: 10JUN2021 134554    44.0S  168.0E 3.0-4.9 ACBAA  So. Island, N.Z.            

 

JAPAN AND KURIL ISLANDS

 

O:  8JUN2021 15:29:01  36.5N  143.0E Mw=5.3  EMSC   OFF EAST COAST OF HONSHU, JAPA

P:  8JUN2021 134397    37.0N  142.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

O:  8JUN2021 22:34:25  39.9N  142.2E mb=4.9  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  7JUN2021 134397    39.0N  141.0E 4.0-5.6 AAAAA  Off East Coast Honshu      

 

NEIC reported this earthquake of M 4.9 off northeastern Honshu, Japan  was felt with intensity II-III in the area(s) of off northeastern Honshu, Japan in Misawa, Aomori.

 

O:  8JUN2021 12:53:07  49.2N  155.4E mb=4.9  EMSC   KURIL ISLANDS                

P:  7JUN2021 134480    50.0N  156.0E 4.0-5.7 AAAAA  Kamchatka                  

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  8JUN2021 20:45:44  30.6N  114.3W ML=3.9  EMSC   GULF OF CALIFORNIA           

P:  4JUN2021 134348    28.0N  112.0W 3.5-4.9 BCBAA  Gulf of California         

 

O:  8JUN2021 17:35:05  31.1N  115.4W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

O:  8JUN2021 17:06:24  33.1N  116.0W Ml=2.6  EMSC   SOUTHERN CALIFORNIA          

O:  8JUN2021 12:37:10  33.5N  116.9W Ml=2.6  EMSC   SOUTHERN CALIFORNIA          

O: 08JUN2021 17:09:17  33.1N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 09JUN2021 00:39:35  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 09JUN2021 05:35:34  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California             

 

O:  8JUN2021 22:09:48  36.2N  118.2W ML=2.2  EMSC   CENTRAL CALIFORNIA            

P:  7JUN2021 134365    36.1N  118.1W 2.5-5.0 AAAAA  California/Nevada area     

 

O:  9JUN2021 01:31:30  36.6N  121.1W Md=2.4  EMSC   CENTRAL CALIFORNIA           

P: 10JUN2021 134375    36.4N  121.0W 2.5-4.4 AAAAA  Central California          

 

O:  8JUN2021 22:03:16  37.0N  121.6W Md=2.5  EMSC   NORTHERN CALIFORNIA          

P:  8JUN2021 134376    37.3N  121.6W 2.5-4.4 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.5 in Central California was felt with intensity II-III in the area(s) of Central California at Gilroy and San Juan Bautista.

 

 

ALASKA

 

O:  9JUN2021 01:20:48  55.3N  157.0W ML=3.1  EMSC   ALASKA PENINSULA             

P:  9JUN2021 134472    54.7N  156.9W 3.5-4.9 AAAAA  Alaska Peninsula           

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  8JUN2021 06:31:17  50.7N  130.4W MB=3.0  ECAN Port Hardy, BC                 

O:  8JUN2021 06:08:34  50.5N  130.1W MB=3.0  ECAN Port Hardy, BC                 

P:  5JUN2021 134476    50.6N  130.5W 3.0-4.9 BAAAA  British Colombia           

P:  7JUN2021 134467    49.9N  130.2W 2.8-5.1 AAAAA  Vancouver Island area      

 

O:  7JUN2021 19:34:10  52.0N  131.2W MB=3.2  ECAN Village of Queen Charlotte, BC 

O:  7JUN2021 19:29:38  52.0N  131.4W MB=3.4  ECAN Village of Queen Charlotte, BC 

P:  5JUN2021 134476    53.0N  132.0W 3.0-5.1 AAAAA  British Colombia           

 

O:  8JUN2021 00:42:21  48.7N  129.0W MB=3.2  ECAN Port Alice, BC                 

P:  9JUN2021 134467    48.3N  128.5W 2.8-5.4 AAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 09JUN2021 05:07:55  31.6N  104.2W ML=2.9  EMSC   WESTERN TEXAS

O: 09JUN2021 05:15:41  31.6N  104.3W ML=2.8  EMSC   WESTERN TEXAS

O: 08JUN2021 09:30:09  31.7N  104.4W ML=2.6  EMSC   WESTERN TEXAS

O:  9JUN2021 04:10:50  31.6N  104.3W ML=3.5  EMSC   WESTERN TEXAS                

P:  7JUN2021 134400    32.5N  104.6W 2.0-4.0 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O:  8JUN2021 07:44:52  35.0N   97.7W ML=2.1  EMSC   OKLAHOMA                     

P:  8JUN2021 134419    34.0N   97.0W 2.0-4.4 AAAAA  Southern Plains            

P:  9JUN2021 134418    36.0N   97.0W 2.0-3.9 AAAAA  Southern Plains            

 

O:  8JUN2021 08:57:17  36.6N   89.8W Md=2.1  EMSC   SOUTHEASTERN MISSOURI        

P:  4JUN2021 134389    36.0N   89.0W 2.0-4.3 BAAAA  New Madrid area            

 

 

O:  7JUN2021 20:34:41  72.0N   75.2W MB=2.1  ECAN Pond Inlet, NU                 

P:  9JUN2021 134508    71.0N   75.0W 2.5-4.1 AAAAA  Baffin/Davis Strait Canada 

 

HAWAII

 

O:  9JUN2021 05:13:02  19.4N  155.6W ML=3.3  EMSC   ISLAND OF HAWAII, HAWAII     

P:  8JUN2021 134325    19.3N  155.2W 3.0-4.4 AAAAA  Hawaii                     

 

OCEAN RIDGES ACTIVE

 

EARTHQUAKE SUMMARY FOR JUNE 7, 2021

 

The strongest earthquakes in the world today occurred in several ocean ridge

areas including the Southern mid-Atlantic (M 4.7); the South Sandwich Islands (M 5.0) and the Gulf of Aden (M 4.5) and central Atlantic (M 4.9). These remote events were not reported felt in these areas. Forecast 134535, 134324, 134555 and 134559 had expected this activity in general within about 200 of of these events, with the best forecasts for the Gulf of Aden for an event within about 50 km of that epicenter around June 9 and in the Southern Mid-Atlantic Ridge for an event around June 9 within about 50 km of that epicenter. While most of these appear to have been slightly promoted by high tidal stresses associated with the upcoming new moon, the relation is not yet well defined. This summary had expected associated seismicity with the new moon and eclipse of June 10 as:

 

"The new moon arrives on June 10 at 10:53 UT. Longitudes which are at local solar midnight at this hour include those near 160 West while those at local solar noon are near 20 East longitude. These include areas from the northern Kermadec/Tonga/Samoa arc, Hawaii and Alaska and the Aleutians in the west and Central Europe and Africa in the east. These areas are most likely to see tidal enhancement of seismicity with this new moon. Other areas could also see an increase in seismicity especially near local solar noon and midnight with a moderately strong to major quake possible in the next week. This is an annular solar eclipse. The maximum will be at 80N 66W and will be visible in northern and central Alaska and central and northern Canada. It will end north of Kamchatka, Russia and could trigger a large earthquake or volcanism in that area. In the U.S. it will be partially visible in Central Alaska, North and South Dakota through much of the eastern and northern U.S., Greenland and Canada beginning in the region of the Virgin Islands and Puerto Rico. A strong to major earthquake is likely within several days of this eclipse, most likely in eastern Asia or the Caribbean." (June 6-8, 2021)

 

O:  8JUN2021 04:39:59  17.9S   12.9W mb=4.9  EMSC   SOUTHERN MID-ATLANTIC RIDGE  

P:  5JUN2021 134535    20.0S   12.0W 4.0-5.5 BBAAA  So. Mid-Atlantic Ridge     

 

O:  7JUN2021 07:39:34  13.2N   50.7E mb=4.5  EMSC   GULF OF ADEN                 

P:  9JUN2021 134324    13.0N   51.0E 3.5-4.9 AAAAA  Gulf of Aden               

 

O:  7JUN2021 14:17:23  44.3S   16.2W mb=5.0  EMSC   SOUTHERN MID-ATLANTIC RIDGE  

P:  9JUN2021 134555    44.0S   16.0W 4.0-5.5 AAAAA  So. Mid-Atlantic Ridge     

 

O:  7JUN2021 06:55:18  59.6S   25.4W mb=4.7  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  6JUN2021 134559    60.0S   29.0W 4.0-5.6 AABAA  So. Sandwich Islands       

 

A series of moderate earthquakes also hit in the northeastern Caribbean near the Virgin Islands  and Anguilla region of the Leeward Islands with M 4.6, 4.5, 4.1 ... This is the area in which the coming solar eclipse will first be seen. It is likely that this series was enhanced by tidal effects associated with the coming new moon. The last earthquake of M>=4.6 in this region was an M 4.9 on August 31, 2019 and prior to that an M 4.6 on June 25, 2014. Forecast 134343 had expected today's activity within about 50 km was likely around June 10. This activity is at the third node (120 degrees) from the M 8.1 in the Kermadec Islands of March 4 and may have been promoted by energy from that source.

 

O: 08JUN2021 02:44:14  19.2N   63.8W Md=3.9  EMSC   VIRGIN ISLANDS REGION

O: 07JUN2021 12:08:56  19.3N   63.6W mb=4.5  EMSC   VIRGIN ISLANDS REGION

O: 08JUN2021 05:57:17  19.4N   63.6W mb=4.1  EMSC   VIRGIN ISLANDS REGION

O: 07JUN2021 11:24:54  19.6N   64.0W Md=3.8  EMSC   VIRGIN ISLANDS REGION

O: 08JUN2021 05:11:18  19.6N   63.6W Md=4.0  EMSC   VIRGIN ISLANDS REGION

O:  7JUN2021 20:15:39  19.1N   63.3W mb=4.6  EMSC   ANGUILLA REGION, LEEWARD ISLAN

P: 10JUN2021 134343    20.0N   64.0W 3.0-4.6 BAAAA  Bahamas/No. Caribbean      

 

An unusual earthquake of M 4.5 also occurred near the antipode of these events in the Virgin Islands today. This was located in Western Australia. Antipodal effects between these two regions are unlikely to have been great enough to trigger them, but is is quite possible that tidal effects from the upcoming new moon and eclipse may have affected each area. 

 

O:  7JUN2021 08:03:18  22.5S  120.1E mb=4.5  EMSC   WESTERN AUSTRALIA            

 

The largest earthquake in the aftershock zone in southern California today was an M 3.9-4.1. NEIC reported maximum intensity IV in Calipatria and Brawley and II-III in Imperial, El Centro, Rancho Mirage, Palm Sprints, Jamul, Escondido, and San Diego. Most of today's strongest activity occurred near local solar noon and was probably promoted by strong tidal stresses associated with the coming new moon and eclipse of June 10. Forecast 134406 had expected today's activity  in Southern California was likely around June 7.

 

O: 07JUN2021 14:45:22  33.2N  115.7W ML=3.0  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:08:27  33.2N  115.7W ML=3.9  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:08:27  33.2N  115.7W ML=4.1  ANSS   SOUTHERN CALIFORNIA

O: 07JUN2021 21:24:51  33.2N  115.7W ML=3.3  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 18:05:02  31.2N  116.4W Ml=3.3  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O:  7JUN2021 18:49:34  31.1N  116.4W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California             

 

 

The seismic activity at Mount Hood, Oregon ceased today as quickly as it began yesterday. In the previous issue of this summary it had been noted as:

 

"An unusually large M 3.9-4.0 earthquake shook the Mount Hood area of Oregon today. NEIC reported intensity IV in Oregon at Government Camp, Rhododendron, and Cascake Locks, Oregon with III in Mount Hood, Parkdale, Welches, Brightwood, Hood River,  Sandy, Mosier and Estacada.  It was followed by aftershocks of M 2.1 and 2.4 and may represent subterranean volcanism in the area. The only earthquake in the past 30 years in the Mount Hood area of Oregon with M>=4 was an M 4.5 on June 29, 2002. Forecast 134461 had expected today's event within about 10 km of this epicenter was likely around June 4. This activity is at the fourth node (90 degrees) from the M 8.1 in the Kermadec Islands of March 4 and was probably promoted by energy from that source." (June 6, 2021)

 

This activity may have been triggered by effects of a strong Gamma Ray Burst (GRB) (#210606A) which occurred simultaneously with the mainshocks and may be a one-off event related to that GRB. NASA Swift catalog reported this GRB with the following parameters:

 

 

"The last major Gamma Ray Burst (GRB) according to the online NASA Swift GRB Catalog was observed on June 6, 2021 at 03:56 UT with BAT Fluence n/a 10-7 erg/cm2 (MAGNITUDE: n/a), Associated earthquakes: Mt Hood, Oregon M 4.0)" (June 7, 2021)

 

A second GRB  (#210605B) was closely associated with the energetic M 5.3 in southern California on June 5 as:

 

"The last major Gamma Ray Burst (GRB) according to the online NASA Swift GRB Catalog was observed on June 5, 2021 at 14:55 UT with BAT Fluence n/a 10-7 erg/cm2 (MAGNITUDE: n/a), Associated earthquakes: Southern California M 5.3)" (June 7, 2021)

 

O: 06JUN2021 04:14:23  45.3N  121.7W Ml=2.1  EMSC   MOUNT HOOD AREA, OREGON

O: 06JUN2021 03:51:37  45.4N  121.7W MD=4.0  EMSC   MOUNT HOOD AREA, OREGON

O: 06JUN2021 03:51:37  45.4N  121.7W MD=3.9  EMSC   MOUNT HOOD AREA, OREGON

O:  6JUN2021 03:55:36  45.3N  121.7W ML=2.4  EMSC   MOUNT HOOD AREA, OREGON      

P:  4JUN2021 134461    45.3N  121.7W 2.0-4.0 AAAAA  Oregon 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:  7JUN2021 23:12:19  37.5N   72.5E mb=4.1  EMSC   TAJIKISTAN                   

P:  3JUN2021 134384    38.0N   72.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

O:  7JUN2021 22:44:01  38.2N   46.0E ML=4.2  EMSC   NORTHWESTERN IRAN            

O:  8JUN2021 03:14:08  38.2N   46.2E ML=4.0  EMSC   NORTHWESTERN IRAN            

P: 10JUN2021 134432    40.0N   44.0E 3.5-5.1 ABBAA  Caucasus/Caspian Sea       

 

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

 

INDONESIA AND PHILIPPINES

 

O: 07JUN2021 20:39:02   0.6N  123.7E ML=4.3  EMSC   MINAHASA, SULAWESI, INDONESIA

O:  8JUN2021 05:00:33   0.5N  123.7E Mw=5.3  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  7JUN2021 134286     0.0N  124.0E 4.0-5.5 AAAAA  Mindanao, Philippines      

 

O:  7JUN2021 19:07:22   1.0S  120.8E ML=4.4  EMSC   SULAWESI, INDONESIA          

P:  7JUN2021 134312     1.0S  122.0E 4.0-5.4 AAAAA  Sulawesi area              

 

O:  7JUN2021 10:20:08   1.4N  126.4E ML=4.4  EMSC   MOLUCCA SEA                  

O:  7JUN2021 18:50:23   2.9N  128.2E ML=4.0  EMSC   HALMAHERA, INDONESIA         

O:  7JUN2021 07:16:25   3.0N  127.8E ML=4.1  EMSC   MOLUCCA SEA                  

P: 10JUN2021 134285     3.0N  129.0E 4.0-5.4 BAAAA  Halmahera                  

 

O:  8JUN2021 06:40:49   6.5S  131.4E ML=4.7  EMSC   KEP. TANIMBAR REGION, INDONESI

P:  8JUN2021 134315     5.0S  130.0E 4.0-5.4 ABBAA  West Irian, PNG            

 

O:  7JUN2021 22:50:48   6.8S  104.9E ML=4.4  EMSC   SUNDA STRAIT, INDONESIA      

P:  3JUN2021 134310     6.0S  104.0E 4.0-5.4 BAAAA  So. of Sumatera            

 

O:  7JUN2021 17:28:49   8.2S  112.4E mb=4.1  EMSC   JAVA, INDONESIA              

P: 10JUN2021 134308     9.0S  113.0E 4.0-5.5 BAAAA  So. of Bali                

 

O:  7JUN2021 21:41:12  10.2N  126.2E Mw=5.1  EMSC   PHILIPPINE ISLANDS REGION    

P:  7JUN2021 134327    11.0N  125.0E 3.5-4.9 AAAAA  Luzon, Philippines         

 

O:  7JUN2021 11:49:58  11.0N  122.3E mb=4.7  EMSC   PANAY, PHILIPPINES           

O:  7JUN2021 18:17:36  11.9N  124.1E ML=4.1  EMSC   LEYTE, PHILIPPINES           

P:  7JUN2021 134327    11.0N  125.0E 3.5-4.9 AAAAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 4.7 in Panay, Philippines was felt with intensity VI in the area(s) of Panay, Philippines at Sibalom, Nambusso, Tabuo, Western Visayas, Ma-ayon (IV) and II-III in Balibagan and San Jose.

 

O:  8JUN2021 05:01:00  13.9N  145.5E mb=4.8  EMSC   GUAM REGION                  

P:  6JUN2021 134340    14.0N  145.0E 4.0-5.6 AAAAA  So. Marianas/Guam          

 

NEIC reported this earthquake of M 4.8 in Guam, Mariana Islands was felt with intensity II-III in the area(s) of Guam, Mariana Islands at Rota, Tamuning, Hagatha, Talofofo and Merizo.

 

 

O:  7JUN2021 18:03:26  18.8N  145.5E mb=4.7  EMSC   PAGAN REG., N. MARIANA ISLANDS

P:  9JUN2021 134333    19.0N  145.0E 4.0-5.4 AAAAA  No. Marianas               

 

CENTRAL AND SOUTH AMERICA

 

O:  7JUN2021 16:09     25.2S   70.9W mb=4.0  GUC    Atacama at Chanaral, Copiapo a

P:  8JUN2021 134527    28.0S   71.0W 4.0-5.5 ACAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity   III in  Atacama at Chanaral, Copiapo and Tierra Amarilla, Chile.

 

O: 08JUN2021 02:44:14  19.2N   63.8W Md=3.9  EMSC   VIRGIN ISLANDS REGION

O: 07JUN2021 12:08:56  19.3N   63.6W mb=4.5  EMSC   VIRGIN ISLANDS REGION

O: 08JUN2021 05:57:17  19.4N   63.6W mb=4.1  EMSC   VIRGIN ISLANDS REGION

O: 07JUN2021 11:24:54  19.6N   64.0W Md=3.8  EMSC   VIRGIN ISLANDS REGION

O: 08JUN2021 05:11:18  19.6N   63.6W Md=4.0  EMSC   VIRGIN ISLANDS REGION

O:  7JUN2021 20:15:39  19.1N   63.3W mb=4.6  EMSC   ANGUILLA REGION, LEEWARD ISLAN

P: 10JUN2021 134343    20.0N   64.0W 3.0-4.6 BAAAA  Bahamas/No. Caribbean      

 

O:  8JUN2021 03:46:36   6.6S   81.3W ML=4.0  EMSC   NEAR COAST OF NORTHERN PERU  

P:  7JUN2021 134295     4.0S   80.0W 4.0-5.8 ACAAA  Ecuador                    

 

O:  7JUN2021 09:59:13   8.8S   74.5W ML=4.3  EMSC   CENTRAL PERU                 

P:  6JUN2021 134292     8.0S   74.0W 3.5-5.1 AAAAA  Brazil                     

 

O:  7JUN2021 22:00:49  11.9S   76.6W ML=4.0  EMSC   CENTRAL PERU                 

P:  9JUN2021 134512    10.0S   75.0W 3.5-5.0 ABBAA  Brazil                     

 

O:  7JUN2021 19:37:57  13.3N   91.8W ML=4.6  EMSC   OFFSHORE GUATEMALA           

P:  8JUN2021 134323    14.0N   91.0W 3.5-5.3 AAAAA  Guatemala                  

 

O:  8JUN2021 03:55:23  15.9N   94.2W ML=4.3  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  9JUN2021 134320    15.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O:  7JUN2021 10:06:30  17.9N   66.9W Md=3.2  EMSC   PUERTO RICO REGION           

P:  5JUN2021 134338    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O:  8JUN2021 03:23:18  17.9N  100.3W ML=4.0  EMSC   GUERRERO, MEXICO             

P:  9JUN2021 134336    16.0N  100.0W 3.5-5.4 ABAAA  Oaxaca, Mexico             

 

O:  7JUN2021 19:29:14  18.3N   68.9W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P:  8JUN2021 134339    19.0N   68.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O:  8JUN2021 04:56:23  18.8N   64.8W ML=3.2  EMSC   VIRGIN ISLANDS REGION        

P:  9JUN2021 134326    18.0N   65.0W 3.0-4.9 AAAAA  Leeward Islands            

 

O:  8JUN2021 04:12:59  24.3S   67.3W mb=4.4  EMSC   SALTA, ARGENTINA             

P:  7JUN2021 134526    23.0S   67.0W 4.0-5.6 ABAAA  Argentina                   

 

O:  7JUN2021 16:09:46  26.0S   71.2W ML=4.1  EMSC   OFF COAST OF ANTOFAGASTA, CHIL

P:  8JUN2021 134527    28.0S   71.0W 4.0-5.5 ABAAA  Coast Central Chile        

 

O:  7JUN2021 19:35:21  28.0N  112.1W ML=3.7  EMSC   GULF OF CALIFORNIA            

P:  4JUN2021 134348    28.0N  112.0W 3.5-4.9 BAAAA  Gulf of California         

 

 

AFRICA AND EUROPE

 

O:  8JUN2021 03:59:53  43.7N   16.0E mb=4.3  EMSC   CROATIA                      

P:  9JUN2021 134438    43.0N   16.0E 3.0-5.2 AAAAA  Italy                       

 

NEIC reported this earthquake of M 4.3 in Croatia was felt with intensity III-IV in the area(s) of Croatia at Grebastica, Brodarica, Primosten, Rogoznica, Siberik, Vinasce, Split, Trogir, Drnis, Pirovak.

 

O:  7JUN2021 16:00:19  36.4N   27.1E mb=4.4  EMSC   DODECANESE IS.-TURKEY BORDER R

P:  6JUN2021 134363    35.0N   25.0E 3.0-4.8 ABBAA  Aegean Sea                 

 

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

 

SOUTHWEST PACIFIC

 

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

 

OCEAN RIDGES

 

O:  8JUN2021 04:39:59  17.9S   12.9W mb=4.9  EMSC   SOUTHERN MID-ATLANTIC RIDGE  

P:  5JUN2021 134535    20.0S   12.0W 4.0-5.5 BBAAA  So. Mid-Atlantic Ridge     

 

O:  7JUN2021 07:39:34  13.2N   50.7E mb=4.5  EMSC   GULF OF ADEN                 

P:  9JUN2021 134324    13.0N   51.0E 3.5-4.9 AAAAA  Gulf of Aden               

 

O:  7JUN2021 14:17:23  44.3S   16.2W mb=5.0  EMSC   SOUTHERN MID-ATLANTIC RIDGE  

P:  9JUN2021 134555    44.0S   16.0W 4.0-5.5 AAAAA  So. Mid-Atlantic Ridge     

 

O:  7JUN2021 06:55:18  59.6S   25.4W mb=4.7  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  6JUN2021 134559    60.0S   29.0W 4.0-5.6 AABAA  So. Sandwich Islands       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  7JUN2021 08:03:18  22.5S  120.1E mb=4.5  EMSC   WESTERN AUSTRALIA            

 

O:  8JUN2021 03:12:06  35.9S  179.8E ML=4.1  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P:  6JUN2021 134544    37.0S  178.0E 3.0-4.5 ABBAA  North Island, N.Z.          

 

JAPAN AND KURIL ISLANDS

 

O:  8JUN2021 01:19:16  37.9N  141.7E mb=4.8  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  8JUN2021 134397    37.0N  142.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

NEIC reported this earthquake of M 4.8 off eastern Honshu, Japan  was felt with intensity II-III in the area(s) of Japan in Miyagi, Fukushima and Chiba.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 07JUN2021 22:54:06  33.0N  116.2W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 11:38:51  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 08JUN2021 02:07:33  33.1N  115.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 08JUN2021 03:07:08  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 09:47:44  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 13:26:29  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 14:43:12  33.2N  115.7W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 14:45:22  33.2N  115.7W ML=3.0  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 14:48:24  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 15:00:13  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 15:32:08  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 15:32:08  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 15:58:03  33.2N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 16:16:00  33.2N  115.7W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 16:35:21  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 17:20:47  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 18:56:38  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 19:07:44  33.2N  116.0W Ml=2.6  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 19:20:41  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 19:26:25  33.2N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 19:30:57  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 19:35:07  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 19:38:29  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:08:27  33.2N  115.7W ML=3.9  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:12:59  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:18:19  33.2N  115.7W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:21:40  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:24:51  33.2N  115.7W ML=3.3  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:26:46  33.2N  116.0W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:28:55  33.2N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:28:55  33.2N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:37:28  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:37:28  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:42:00  33.2N  115.6W ML=2.3  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:46:43  33.2N  115.7W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 22:08:48  33.2N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 22:14:49  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 22:41:37  33.2N  115.7W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 08JUN2021 01:01:13  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 08JUN2021 01:35:38  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 17:56:26  33.3N  115.7W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 21:29:58  33.3N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 18:05:02  31.2N  116.4W Ml=3.3  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O:  7JUN2021 18:49:34  31.1N  116.4W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

O:  7JUN2021 22:29:04  32.5N  115.8W ML=2.1  EMSC   BAJA CALIFORNIA, MEXICO      

O:  7JUN2021 15:11:02  33.4N  116.3W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California             

 

O:  7JUN2021 10:17:03  35.6N  117.4W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P:  9JUN2021 134410    35.9N  117.7W 2.5-5.1 AAAAA  So. California             

 

O: 07JUN2021 20:02:50  35.7N  121.2W Md=2.2  EMSC   CENTRAL CALIFORNIA

O:  7JUN2021 19:54:49  35.7N  121.2W Md=2.4  EMSC   CENTRAL CALIFORNIA           

P:  8JUN2021 134398    35.6N  121.3W 2.5-4.4 AAAAA  Off So. California         

 

O:  8JUN2021 04:06:23  36.0N  117.9W Ml=2.0  EMSC   CENTRAL CALIFORNIA           

P:  7JUN2021 134365    36.1N  118.1W 2.5-5.0 AAAAA  California/Nevada area     

 

O:  7JUN2021 16:07:28  37.4N  118.5W ML=3.0  EMSC   CENTRAL CALIFORNIA           

O:  7JUN2021 16:07:28  37.4N  118.5W ML=3.4  ANSS   CENTRAL CALIFORNIA           

O: 07JUN2021 18:00:58  37.4N  118.5W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 07JUN2021 22:22:02  37.4N  118.5W Md=2.7  EMSC   CENTRAL CALIFORNIA

P:  9JUN2021 134368    37.5N  118.6W 2.5-4.9 AAAAA  California/Nevada area     

 

NEIC reported these earthquakes of M 2.7, 3.4 and M 2.6 in Mammoth Lakes, California was felt with intensity II-III in the area(s) of Mammoth Lakes, California at Bishop.

 

O:  8JUN2021 01:37:32  38.2N  117.8W ml=2.0  EMSC   NEVADA                       

P:  6JUN2021 134370    37.9N  118.2W 2.5-4.5 AAAAA  California/Nevada area     

 

O:  7JUN2021 22:00:56  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

O: 08JUN2021 05:39:09  38.8N  122.8W Md=2.5  EMSC   NORTHERN CALIFORNIA

P:  9JUN2021 134377    38.5N  122.7W 2.5-4.4 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.5 in the Geysers, California was felt with intensity II-III in the area(s) of the Geysers, California at Geyserville, Angwin and Middletown.

 

O:  8JUN2021 01:44:17  40.7N  115.8W ml=3.3  EMSC   NEVADA                       

P:  8JUN2021 134369    38.7N  115.4W 2.5-4.9 ABAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.3 in Nevada was felt with intensity II-III in the area(s) of Nevada at Spring Creek and Elko.

 

ALASKA

 

O:  7JUN2021 07:15:56  51.2N  174.0E mb=3.8  EMSC   NEAR ISLANDS, ALEUTIAN ISLANDS

P:  4JUN2021 134486    51.0N  176.0E 4.0-6.0 BABAA  Rat Islands                

 

O:  7JUN2021 16:03:25  56.1N  149.8W ML=3.2  EMSC   GULF OF ALASKA               

O:  7JUN2021 16:07:27  62.3N  149.9W ML=3.7  EMSC   CENTRAL ALASKA               

O:  7JUN2021 16:07:27  62.3N  149.9W ML=3.4  ANSS   CENTRAL ALASKA               

P:  7JUN2021 134497    62.6N  148.4W 3.2-5.0 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.7 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska at Talkeetna, Sustina, Chugiak, Anchorage and Eagle River.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  7JUN2021 14:57:28  48.7N  125.5W Ml=2.3  EMSC   VANCOUVER ISLAND, CANADA REGIO

P:  4JUN2021 134468    48.4N  123.2W 2.0-4.1 BABAA  Washington state, U.S.     

 

O:  6JUN2021 12:28:42  66.8N  135.9W MB=3.1  ECAN Fort McPherson, NT             

P:  5JUN2021 134506    64.0N  133.0W 2.5-4.1 ACBAA  Yukon Territory, Canada    

 

O:  6JUN2021 22:16:03  50.6N  130.3W MB=3.1  ECAN Port Hardy, BC                 

O:  6JUN2021 10:33:12  50.7N  130.5W MB=3.8  ECAN Port Hardy, BC                 

P:  5JUN2021 134476    50.6N  130.5W 3.0-4.9 AAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O:  8JUN2021 06:46:59  31.6N  104.6W ML=2.7  EMSC   WESTERN TEXAS                

P:  7JUN2021 134400    32.5N  104.6W 2.0-4.0 AAAAA  SW U.S.A                   

 

O:  7JUN2021 17:42:15  32.7N  100.7W mb=2.8  EMSC   WESTERN TEXAS                

P:  8JUN2021 134419    34.0N   97.0W 2.0-4.4 ABCAA  Southern Plains            

 

EASTERN U.S./CANADA

 

O:  4JUN2021 22:31:10  46.7N   65.0W MB=2.5  ECAN Richibucto, NB                 

O:  6JUN2021 20:18:58  46.9N   65.8W MB=1.0  ECAN Miramichi, NB                   

P:  2JUN2021 134434    46.0N   66.0W 2.0-3.9 BAAAA  E. of Maine                

 

O:  8JUN2021 00:08:48  35.1N   95.4W ML=2.3  EMSC   OKLAHOMA                     

P:  4JUN2021 134419    35.0N   96.0W 2.0-4.4 BAAAA  Southern Plains             

 

O:  7JUN2021 10:14:41  36.5N   99.0W ML=2.0  EMSC   OKLAHOMA                     

P:  7JUN2021 134420    37.0N   98.0W 2.0-4.3 AAAAA  Southern Plains            

 

HAWAII

 

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

 

NEW MOON, SOLAR ECLIPSE, MAY BRING ENHANCED SEISMICITY

 

EARTHQUAKE SUMMARY FOR JUNE 6, 2021

 

The strongest earthquakes in the world today occurred at the northern Kermadec-Fiji region. An M 5.7 in the Kermadec Islands and an M 5.6 in Fiji were not reported in this remote area today. The M 5.7 in the Kermadec Islands is the strongest in that aftershock zone (of the M 8.1 of March 4, 2021) since an M 5.9 on April 28, 2021. This may be related to tidal stresses which maximize near this longitude with the coming new moon as noted in this and previous summaries:

 

"The new moon arrives on June 10 at 10:53 UT. Longitudes which are at local solar midnight at this hour include those near 160 West while those at local solar noon are near 20 East longitude. These include areas from the northern Kermadec/Tonga/Samoa arc, Hawaii and Alaska and the Aleutians in the west and Central Europe and Africa in the east. These areas are most likely to see tidal enhancement of seismicity with this new moon. Other areas could also see an increase in seismicity especially near local solar noon and midnight with a moderately strong to major quake possible in the next week. This is an annular solar eclipse. The maximum will be at 80N 66W and will be visible in northern and central Alaska and central and northern Canada. It will end north of Kamchatka, Russia and could trigger a large earthquake or volcanism in that area. In the U.S. it will be partially visible in Central Alaska, North and South Dakota through much of the eastern and northern U.S., Greenland and Canada beginning in the region of the Virgin Islands and Puerto Rico. A strong to major earthquake is likely within several days of this eclipse, most likely in eastern Asia or the Caribbean." (June 6-7. 2021)

 

Forecast 134530 had expected today's event was likely in the Kermadec Islands within about 50 km and two days of today's epicenter. This earthquake is at 102-103 degrees from the M 7.4 in Qinghai, China of May 21, 2021 and was probably promoted by energy from that source. Other activity at this distance from Qinghai today occurred in southern California and  Oklahoma.

 

O:  6JUN2021 23:16:39  27.7S  176.3W Mw=5.7  EMSC   KERMADEC ISLANDS REGION      

P:  4JUN2021 134530    28.0S  177.0W 4.0-5.5 AAAAA  No. Kermadec Islands        

 

The M 5.6 in the Fiji Islands may be a regional aftershock of the M 6.5  of

May 21, 2021. Forecast 134521 had expected today's event was likely around June 5.

 

O:  6JUN2021 18:24:29  15.9S  177.4W Mw=5.6  EMSC   FIJI REGION                  

P:  5JUN2021 134521    16.0S  176.0W 4.0-5.7 AABAA  Tonga Islands              

 

The strong aftershock series in Southern California following the M 5.3 there of June 6 continued at a reduced rate today. The strongest aftershock in the area today was an M 3.8 with intensity V in Brawley and II-III in Calipatria, San Diego, Riverside, and Norco, California. A later M 3.6 was felt in the same area. Forecast 134406 had expected today's activity within about 50 km was likely around June 7. Following is a listing of events in the aftershock area today of M>=3. A more complete listing can be found in the "CALIFORNIA" section of this summary.

 

O: 07JUN2021 05:44:35  33.2N  115.6W ML=3.3  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 10:30:36  33.3N  116.0W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 05:44:35  33.2N  115.6W ML=3.6  ANSS   SOUTHERN CALIFORNIA

O: 06JUN2021 08:05:36  33.2N  115.6W ML=3.8  ANSS   SOUTHERN CALIFORNIA

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California             

 

The strongest earthquake in the U.S. or Canada today was an M 4.3 in the area south of Alaska near the Alaska Peninsula. This is an unusual event, the first of M>=4.3 south of 54 North latitude in the region since an M 4.7 about 50 km south of today's epicenter nearly 15 years ago on September 2, 2006. Forecast 134472 had expected today's event in this area was likely around June 9. This earthquake occurred near local solar noon at a longitude where tidal stresses are expected to maximize with the next new moon as noted in this and previous summaries. (see above)

 

 

O:  6JUN2021 21:34:01  53.3N  156.8W ml=4.3  EMSC   SOUTH OF ALASKA              

P:  9JUN2021 134472    54.7N  156.9W 3.5-4.9 BBAAA  Alaska Peninsula           

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O:  6JUN2021 15:56:42  37.3N   71.7E mb=4.5  EMSC   TAJIKISTAN                   

P:  3JUN2021 134384    38.0N   72.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

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

 

INDONESIA AND PHILIPPINES

 

O:  7JUN2021 03:52:53   0.2N  122.2E mb=4.6  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  9JUN2021 134275     1.0N  122.0E 4.0-5.5 AAAAA  Celebes Sea                

 

O: 06JUN2021 22:46:54   0.9N  125.5E ML=4.1  EMSC   MOLUCCA SEA

O:  7JUN2021 02:06:33   0.3N  126.4E ML=4.0  EMSC   MOLUCCA SEA                  

P:  7JUN2021 134286     0.0N  124.0E 4.0-5.5 AACAA  Mindanao, Philippines      

 

O:  7JUN2021 00:51:46   2.8N  128.4E ML=4.0  EMSC   HALMAHERA, INDONESIA         

O:  6JUN2021 09:07:34   3.0N  126.5E Mw=5.2  EMSC   MOLUCCA SEA                  

P: 10JUN2021 134285     3.0N  129.0E 4.0-5.4 BAAAA  Halmahera                  

 

O:  7JUN2021 05:15:56   4.7S  133.7E mb=5.3  EMSC   NEAR S COAST OF PAPUA, INDONES

P:  5JUN2021 134314     4.0S  134.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O:  7JUN2021 02:13:08   6.2S  128.1E ML=4.3  EMSC   BANDA SEA                    

P:  9JUN2021 134291     6.0S  128.0E 4.0-5.4 AAAAA  Banda Sea                  

 

O:  6JUN2021 22:47:49   7.5S  130.7E mb=4.6  EMSC   KEP. TANIMBAR REGION, INDONESI

P:  5JUN2021 134315     7.0S  130.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O: 06JUN2021 09:27:58  10.1N  126.2E mb=4.5  EMSC   PHILIPPINE ISLANDS REGION

O: 06JUN2021 08:03:22  10.2N  126.3E mb=5.1  EMSC   PHILIPPINE ISLANDS REGION

O: 06JUN2021 13:51:26  10.2N  126.4E ML=4.3  EMSC   PHILIPPINE ISLANDS REGION

O: 06JUN2021 14:02:03  10.3N  126.5E ML=4.1  EMSC   PHILIPPINE ISLANDS REGION

O:  6JUN2021 09:09:41  10.1N  126.3E ML=4.1  EMSC   PHILIPPINE ISLANDS REGION    

P:  7JUN2021 134327    11.0N  125.0E 3.5-4.9 AAAAA  Luzon, Philippines         

P:  8JUN2021 134279     9.0N  126.0E 4.0-5.6 ABAAA  Central Philippines        

 

CENTRAL AND SOUTH AMERICA

 

O:  6JUN2021 18:50:10   4.6S   78.3W mb=4.2  EMSC   PERU-ECUADOR BORDER REGION   

P:  7JUN2021 134295     4.0S   80.0W 4.0-5.8 AABAA  Ecuador                     

 

O:  7JUN2021 02:27:37  10.3N   85.5W mb=4.4  EMSC   COSTA RICA                   

P:  9JUN2021 134282     9.0N   86.0W 3.5-5.0 ABAAA  Costa Rica                 

 

NEIC reported this earthquake of M 4.4 in Costa Rica was felt with intensity II-III in the area(s) of Costa Rica at Sardinal, Samara, Guancaste and Venado Alajuela.

 

O:  6JUN2021 18:20:16  12.1N   86.3W mb=4.5  EMSC   NICARAGUA                    

P:  5JUN2021 134332    12.0N   87.0W 3.5-5.3 AAAAA  Nicaragua                  

 

O:  6JUN2021 07:54:13  15.0N   94.4W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O:  6JUN2021 07:27:23  15.4N   94.7W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

O:  6JUN2021 19:09:14  16.5N   95.1W ML=4.0  EMSC   OAXACA, MEXICO               

O: 07JUN2021 01:55:36  15.4N   94.8W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

P:  7JUN2021 134320    15.0N   95.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O:  6JUN2021 23:49:51  19.3N   64.5W Md=3.9  EMSC   VIRGIN ISLANDS REGION        

P:  9JUN2021 134326    18.0N   65.0W 3.0-4.9 BBAAA  Leeward Islands            

 

O:  6JUN2021 18:42:19  19.3N  102.2W ML=4.0  EMSC   MICHOACAN, MEXICO            

P:  7JUN2021 134330    19.0N  103.0W 3.5-5.6 AAAAA  Michoacan, Mexico          

 

O:  6JUN2021 20:56:40  19.4N   65.8W Md=3.3  EMSC   PUERTO RICO REGION           

P:  5JUN2021 134338    18.0N   67.0W 3.4-5.1 ABAAA  Puerto Rico                

P:  9JUN2021 134326    18.0N   65.0W 3.0-4.9 BBAAA  Leeward Islands            

 

O:  6JUN2021 18:53:00  19.1N   67.7W Md=3.2  EMSC   PUERTO RICO REGION           

P:  8JUN2021 134339    19.0N   68.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O:  6JUN2021 12:02:11  24.0S   66.8W mb=4.7  EMSC   JUJUY, ARGENTINA             

P:  7JUN2021 134526    23.0S   67.0W 4.0-5.6 AAAAA  Argentina                  

 

O:  6JUN2021 22:06:45  30.6S   71.4W ML=4.3  EMSC   COQUIMBO, CHILE              

P:  4JUN2021 134543    30.0S   72.0W 4.0-5.6 AAAAA  Coast Central Chile        

 

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

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

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  6JUN2021 23:16:39  27.7S  176.3W Mw=5.7  EMSC   KERMADEC ISLANDS REGION      

P:  4JUN2021 134530    28.0S  177.0W 4.0-5.5 AAAAA  No. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O:  6JUN2021 15:48:10  23.8N  142.6E mb=4.8  EMSC   VOLCANO ISLANDS, JAPAN REGION

P:  5JUN2021 134362    23.0N  143.0E 4.0-5.6 AAAAA  Volcano Islands            

 

O:  6JUN2021 18:11:07  34.5N  140.2E mb=5.0  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  4JUN2021 134396    33.0N  140.0E 4.0-5.4 ABAAA  Off East Coast Honshu      

 

NEIC reported this earthquake of M 4.9 southeast of Tokyo, Japan  was felt with intensity II-IV in the area(s) of southeast of Tokyo, Japan in Kanagawa and Tokyo.

 

O:  7JUN2021 02:11:30  42.8N  144.4E mb=4.4  EMSC   HOKKAIDO, JAPAN REGION       

P:  7JUN2021 134436    42.0N  145.0E 3.5-5.5 AAAAA  Hokkaido, Japan            

 

O:  6JUN2021 20:16:32  49.7N  152.1E mb=4.1  EMSC   NORTHWEST OF KURIL ISLANDS   

P:  7JUN2021 134449    48.0N  155.0E 3.5-5.5 ABBAA  NE Pacific                 

 

O:  6JUN2021 16:01:41  50.2N  157.4E mb=5.3  EMSC   KURIL ISLANDS                

P:  7JUN2021 134480    50.0N  156.0E 4.0-5.7 AAAAA  Kamchatka                  

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  6JUN2021 16:21:18  33.0N  116.0W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

O:  6JUN2021 10:00:58  33.6N  116.1W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California             

 

O:  6JUN2021 07:48:55  34.0N  117.4W Ml=2.1  EMSC   GREATER LOS ANGELES AREA, CALI

P:  7JUN2021 134404    33.7N  117.5W 2.5-4.8 AAAAA  So. California             

 

O:  6JUN2021 21:07:01  35.0N  119.2W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P:  7JUN2021 134405    35.0N  119.2W 2.5-4.9 AAAAA  So. California             

 

O:  7JUN2021 02:21:29  37.4N  118.5W ML=2.9  EMSC   CENTRAL CALIFORNIA           

O:  7JUN2021 02:21:29  37.4N  118.5W ML=3.2  ANSS   CENTRAL CALIFORNIA           

P:  8JUN2021 134368    37.3N  118.3W 2.5-4.7 AAAAA  California/Nevada area     

 

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

 

O:  6JUN2021 17:50:47  38.2N  116.8W ml=2.0  EMSC   NEVADA                        

P:  8JUN2021 134369    38.7N  115.4W 2.5-4.9 AABAA  California/Nevada area     

 

O:  6JUN2021 10:45:33  38.8N  122.8W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  6JUN2021 134377    38.7N  122.7W 2.5-4.4 AAAAA  Central California          

 

O:  7JUN2021 01:45:34  39.2N  123.2W Md=2.5  EMSC   NORTHERN CALIFORNIA          

P:  7JUN2021 134378    39.6N  123.4W 2.5-4.7 AAAAA  Central California         

 

O:  6JUN2021 10:33:09  40.4N  124.4W Md=2.1  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  8JUN2021 134456    40.3N  124.7W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

 

O: 06JUN2021 17:50:47  38.2N  116.8W ml=2.0  EMSC   NEVADA

 

O: 06JUN2021 18:48:25  33.0N  115.5W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 07:37:56  33.1N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 09:07:54  33.1N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 10:02:50  33.1N  115.7W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 12:16:22  33.1N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 12:55:03  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 13:32:50  33.1N  115.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 13:34:41  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 14:51:01  33.1N  115.6W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 15:02:08  33.1N  115.6W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 20:17:40  33.1N  115.6W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 07:02:15  33.2N  115.6W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 07:04:37  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 07:10:19  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 07:32:16  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 07:36:20  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 07:42:04  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:05:36  33.2N  115.7W Mw=3.8  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:08:02  33.2N  115.7W ML=2.4  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:10:20  33.2N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:13:31  33.2N  115.7W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:22:29  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:26:55  33.2N  115.6W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:38:39  33.2N  115.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:46:31  33.2N  115.6W ML=2.3  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:47:55  33.2N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:55:40  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 08:59:50  33.2N  115.7W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 09:01:29  33.2N  115.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 09:09:20  33.2N  115.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 09:11:07  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 09:57:40  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 10:08:17  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 10:17:54  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 10:35:09  33.2N  115.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 10:56:05  33.2N  115.6W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:03:14  33.2N  115.6W Ml=2.9  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:05:03  33.2N  115.6W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:06:34  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:08:53  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:20:02  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:35:47  33.2N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:37:23  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:40:39  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:43:08  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:44:30  33.2N  115.7W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 11:46:58  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 13:29:30  33.2N  115.7W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 13:48:02  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 13:50:03  33.2N  115.7W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 15:54:09  33.2N  115.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 15:55:32  33.2N  115.7W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 17:03:48  33.2N  115.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 17:25:22  33.2N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 18:49:55  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 18:51:02  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 19:09:55  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 19:30:58  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 20:03:51  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 21:16:07  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 21:41:01  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 22:22:18  33.2N  115.7W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 23:39:45  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 02:44:41  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 04:02:33  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 05:44:35  33.2N  115.6W ML=3.3  EMSC   SOUTHERN CALIFORNIA

O: 07JUN2021 05:44:35  33.2N  115.6W ML=3.6  ANSS   SOUTHERN CALIFORNIA

O: 06JUN2021 08:05:36  33.2N  115.6W ML=3.8  ANSS   SOUTHERN CALIFORNIA

O: 06JUN2021 09:05:44  33.3N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 09:39:14  33.3N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 09:55:58  33.3N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 10:30:36  33.3N  116.0W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 07:55:35  33.5N  115.8W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O:  6JUN2021 16:21:18  33.0N  116.0W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

O:  6JUN2021 10:00:58  33.6N  116.1W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California              

 

ALASKA

 

O:  6JUN2021 21:34:01  53.3N  156.8W ml=4.3  EMSC   SOUTH OF ALASKA              

P:  9JUN2021 134472    54.7N  156.9W 3.5-4.9 BBAAA  Alaska Peninsula           

 

O:  6JUN2021 13:56:06  55.0N  163.7W ML=3.2  EMSC   UNIMAK ISLAND REGION, ALASKA 

P:  7JUN2021 134489    54.1N  162.8W 3.5-5.2 AAAAA  Unimak Islands, Aleutians  

 

O:  6JUN2021 17:55:14  62.5N  148.2W ML=4.1  EMSC   CENTRAL ALASKA               

P:  4JUN2021 134497    62.7N  148.1W 3.2-5.0 AAAAA  Central Alaska              

 

NEIC reported this earthquake of M 4.0 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska at Talkeetna, Glennallen, Chugiak, Eagle River, Valdez and Anchorage.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 06JUN2021 11:08:40  42.2N  126.2W ML=2.9  EMSC   OFF COAST OF OREGON

O:  6JUN2021 07:35:02  42.2N  126.3W ML=2.8  EMSC   OFF COAST OF OREGON          

P:  4JUN2021 134457    42.5N  126.8W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

NEIC reported this earthquake of M 2.9 off the coast of Oregon  was felt with intensity II-III in the area(s) of Oregon at Gold Beach and Eugene.

 

ROCKY MOUNTAINS REGION

 

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

 

EASTERN U.S./CANADA

 

O: 06JUN2021 12:19:15  36.6N   99.0W ML=2.1  EMSC   OKLAHOMA

O:  6JUN2021 13:59:47  36.2N   97.6W ML=2.2  EMSC   OKLAHOMA                     

O:  6JUN2021 07:28:23  36.6N   99.0W ML=2.3  EMSC   OKLAHOMA                     

P:  7JUN2021 134420    37.0N   98.0W 2.0-4.3 AAAAA  Southern Plains            

 

HAWAII

 

O: 06JUN2021 16:56:12  19.2N  155.5W ML=3.8  EMSC   ISLAND OF HAWAII, HAWAII

O: 06JUN2021 18:52:14  19.2N  155.4W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII

O:  6JUN2021 13:26:13  19.2N  155.4W ML=3.4  EMSC   ISLAND OF HAWAII, HAWAII     

P:  8JUN2021 134325    19.3N  155.2W 3.0-4.4 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.5 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Pahala, Hawaii National Park, Naalehu, Captain Cook, Volcano, Hilo, Mountain View, Kurtistown, Keaau and Papaikou.

 

MODERATE M 5.3 SHAKES SOUTHERN CALIFORNIA

 

EARTHQUAKE SUMMARY FOR JUNE 5, 2021

 

A moderate earthquake of M 5.3 shook large portions of Southern California southeast of Los Angeles today. This event was accompanied by a strong swarm of foreshocks and aftershocks also felt lightly in the area. NEIC reported the mainshock was felt with maximum intensity V in southern California at Westmorland, Calipatria, IV in Brawley, Imperia, El Centro, Neber and III in Niland, Thermal, Holtville and Calexico, California. Lesser shaking was reported as far as Las Vegas, Nevada and Los Angeles, California.

 

Today's activity in Southern California continues a series of enhanced earthquakes in the area which followed the M 7.4 in the area of Qinghai, China of May 21. These have been followed by this summary as the area is at or near 103 degrees from the Qinghai epicenter. This is a distance at which seismic energy is strongly concentrated from large surface disturbances due to reflection and refraction of the energy from internal earth boundaries back to the surface. Seismicity is often seen to increase substantially at this distance following major earthquakes. Several swarms have occurred in Baja and Southern California since May 21, the date of the Qinghai quake. Among these were a series about 150 km to the southeast in the area of northern Gulf of California. At the time this summary noted:

 

"A series of light earthquakes of M 3.4, 3.6 and 3.8 occurred near the border of Southern California in the Gulf of California today. These were not reported felt in this epicentral area. The M 3.8 is the strongest event within about 100 km of this epicenter since an M 4.4 on December 28, 2020, the only such event in the past year. An M 5.5 hit near this epicenter on March 7, 2020. ... These earthquakes as well as an M 3.2 near Bakersfield and events in eastern Los Angeles are located near 103 degrees from the Qinghai epicenter of M 7.4 which occurred on May 21 and were probably promoted by energy from that source." (May 27-30, 2021)

 

In the previous issue of this summary it was noted that an M 3.7 on the South Dakota - Nebraska border may have been precursory to a significant earthquake in western North America ina the next several days. That summary had noted in this regard:

 

"An unusual earthquake of M 3.1 occurred south of Mitchell, South Dakota on the Nebraska-South Dakota border today. NEIC reported maximum intensity with this quake was V in Fairfax and Herrick and Saint Charles, South Dakota with III-IV in South Dakota at Lake Andes, Bonesteel, Burke, Platte, and in Nebraska at Bristol, Butte, Oneill, Atkinson, Lincoln, Spencer. It was followed by an M 3.1 aftershock felt in much the same area. This is the strongest earthquake within about 200 km of this epicenter in South Dakota and Nebraska since an M 4.3 on November 3, 2002 about 30 km south of today's epicenter.  Earthquakes in western and central South Dakota often occur shortly before or in conjunction with strong earthquakes along the western rim of the North American Tectonic plate. As today's activity occurred hours after the two earthquakes off the coast of Oregon of M 5.9, they may have been more directly associated with that activity and less or a precursor to another strong earthquake off western North America  ..." (June 5, 2021)

 

An M 7.9 followed the Nebraska earthquake in the Denali National Park area of Alaska about 1.5 hours after the event in South Dakota described above.

 

The epicenter in South Dakota was at 101-102 degrees from the Qinghai, China of M 7.4 on May 21, 2021 and from the M 8.1 in the Kermadec Islands of March 4, 2021 and was probably promoted by energy from those epicenters.

 

Earthquakes in this area often occur in several day swarms and several mainshocks often occur, so a second mainshock of M>=5 is possible in this swarm. The last earthquake within about 150 km of today's epicenter with M>=5.3 was an M 5.5 on August 26, 2012. An M 7.2 hit about 150 km southeast of this epicenter on Easter Sunday April 4, 2010. Today's event, the strongest in the region in nearly nine years is a significant regional earthquake.  Forecasts 134118 and 134406 had expected today's activity was likely at the end of May or in early June within about 50-100 km of today's swarm.

 

Today's activity is located at 104-105 degrees from the M 7.4 in Qinghai of May 21 and was probably promoted by energy from that source. Other moderate earthquakes in the world today at 103-105 degrees from Qinghai occurred in the Ascension Islands, south of New Zealand, North and South Island, New Zealand, and the Kermadec Islands. Following is a listing of earthquakes of M>=3 in the area of Calipatria, California which occurred today. A more extensive listing of events of M>=2 can be found below in the "CALIFORNIA" regional section of this summary.

 

O: 05JUN2021 17:40:51  33.1N  115.6W Mw=3.6  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:42:10  33.1N  115.7W ML=3.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:45:16  33.1N  115.7W Mw=4.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:46:39  33.1N  115.7W Mw=3.8  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:47:50  33.1N  115.6W ML=3.4  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:48:58  33.1N  115.6W Ml=3.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:50:37  33.1N  115.6W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:57:21  33.1N  115.6W ML=4.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:58:42  33.1N  115.6W ML=3.4  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:16:51  33.1N  115.6W ML=3.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:21:48  33.1N  115.6W Mw=4.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 21:49:39  33.1N  115.6W ML=3.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:00:48  33.2N  115.7W ML=3.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:03:39  33.2N  115.6W ML=3.5  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:05:31  33.2N  115.6W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 05:01:30  33.2N  115.6W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:56:02  33.2N  116.3W Mw=5.3  EMSC   SOUTHERN CALIFORNIA

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California             

P: 29MAY2021 134118    33.4N  116.7W 2.5-4.4 CAAAA  So. California             

 

 

An earthquake of M 5.3 was also felt strongly on the Iran-Iraq border today. NEIC reported maximum intensity shaking of VIII in Ilam and V in Mendali, Iran for this event. Forecast 134414 had expected today's event was likely within about 50 km of this epicenter around June 7.

 

O:  6JUN2021 04:54:22  33.4N   46.3E mb=5.2  EMSC   IRAN-IRAQ BORDER REGION      

P:  7JUN2021 134414    33.0N   46.0E 3.8-5.3 AAAAA  So. Iran                   

 

An unusually large M 3.9-4.0 earthquake shook the Mount Hood area of Oregon today. NEIC reported intensity IV in Oregon at Government Camp, Rhododendron, and Cascake Locks, Oregon with III in Mount Hood, Parkdale, Welches, Brightwood, Hood River,  Sandy, Mosier and Estacada. It was followed by aftershocks of M 2.1 and 2.4 and may represent subterranean volcanism in the area. The only earthquake in the past 30 years in the Mount Hood area of Oregon with M>=4 was an M 4.5 on June 29, 2002. Forecast 134461 had expected today's event within about 10 km of this epicenter was likely around June 4. This activity is at the fourth node (90 degrees) from the M 8.1 in the Kermadec Islands of March 4 and was probably promoted by energy from that source.

 

O: 06JUN2021 04:14:23  45.3N  121.7W Ml=2.1  EMSC   MOUNT HOOD AREA, OREGON

O: 06JUN2021 03:51:37  45.4N  121.7W MD=4.0  EMSC   MOUNT HOOD AREA, OREGON

O: 06JUN2021 03:51:37  45.4N  121.7W MD=3.9  EMSC   MOUNT HOOD AREA, OREGON

O:  6JUN2021 03:55:36  45.3N  121.7W ML=2.4  EMSC   MOUNT HOOD AREA, OREGON      

P:  4JUN2021 134461    45.3N  121.7W 2.0-4.0 AAAAA  Oregon state, U.S.         

 

An M 4.8 earthquake occurred in the West Chile Rise today. This region was expected to see enhanced seismicity at this time as it is located near the antipode of the M 7.4 in Qinghai, China of May 21. Following large earthquakes seismic energy is focused at the opposite point on the near-spherical earth (the antipode) and can help enhance seismicity in that area. Forecast 134548 had expected today's event about 150 km to the southeast was likely around June 6.

 

O:  5JUN2021 13:47:19  41.7S   84.3W mb=4.8  EMSC   WEST CHILE RISE              

P:  6JUN2021 134548    43.0S   83.0W 4.0-5.5 ABAAA  Chile Rise                 

 

As Tropical Storm Choi-Wan moved north through the Ryukyu Islands today, it appears to have triggered another earthquake under the eye in the Ryukyu Islands. NEIC reported this earthquake of M 4.8 in the Ryukyu Islands, Japan was felt with intensity II-III in the area(s) of the Ryukyu Islands, Japan in Okinawa at Gushikawa, Ginowan, Okinawa, Tomigusuku and Yomitan.  This follows two moderate earthquake triggered in Taiwan by this storm yesterday. Forecast 134357 had expected today's event was likely in the Ryukyu Islands around June 4. Following is the expectations associated with Choi-Wan published in the previous issue  summary:

 

 

"TS Choi-Wan (04W) continued today near the Ryukyu Islands, Japan  with winds up to 45 kts. It is expected to track to the north and west over the next four days and could help promote seismicity in the region of Taiwan, the Ryukyu Islands and southern Japan while in the area." (June 5, 2021)

 

O:  5JUN2021 10:49:57  25.9N  128.5E mb=4.8  EMSC   RYUKYU ISLANDS, JAPAN        

P:  4JUN2021 134357    28.0N  127.0E 4.0-5.4 ABBAA  Ryukyu 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:  6JUN2021 04:54:22  33.4N   46.3E mb=5.2  EMSC   IRAN-IRAQ BORDER REGION      

P:  7JUN2021 134414    33.0N   46.0E 3.8-5.3 AAAAA  So. Iran                   

 

INDONESIA AND PHILIPPINES

 

O: 05JUN2021 22:57:41   0.2N  126.5E Mw=5.3  EMSC   MOLUCCA SEA

O: 05JUN2021 13:02:18   0.3N  126.5E ML=4.2  EMSC   MOLUCCA SEA

O: 05JUN2021 13:24:50   0.3N  126.4E ML=4.1  EMSC   MOLUCCA SEA

O: 05JUN2021 23:13:35   0.3N  126.5E mb=4.7  EMSC   MOLUCCA SEA

O: 06JUN2021 04:02:41   0.4N  126.5E ML=4.0  EMSC   MOLUCCA SEA

O:  5JUN2021 21:11:40   0.2N  126.5E mb=4.8  EMSC   MOLUCCA SEA                  

P:  7JUN2021 134286     0.0N  124.0E 4.0-5.5 AACAA  Mindanao, Philippines      

 

O:  5JUN2021 12:06:25   0.0N   96.6E mb=4.4  EMSC   NIAS REGION, INDONESIA       

P:  4JUN2021 134288     1.0N   97.0E 4.0-5.4 AAAAA  Nicobar Islands            

 

O:  5JUN2021 12:07:17   2.6S  139.3E ML=4.1  EMSC   NEAR N COAST OF PAPUA, INDONES

P:  7JUN2021 134307     2.0S  140.0E 4.0-5.4 AAAAA  Papua New Guinea           

 

O:  5JUN2021 19:42:45   4.5N  125.8E mb=4.4  EMSC   KEPULAUAN SANGIHE, INDONESIA 

O:  5JUN2021 09:28:20   5.2N  126.1E ML=4.2  EMSC   MINDANAO, PHILIPPINES        

P:  3JUN2021 134287     5.0N  125.0E 4.0-5.7 AAAAA  Mindanao, Philippines      

 

O:  5JUN2021 18:18:26   7.4S  107.3E mb=4.6  EMSC   JAVA, INDONESIA              

P:  9JUN2021 134309     7.0S  107.0E 4.0-5.4 BAAAA  So. of Java                

 

O:  5JUN2021 20:28:45   8.5N  126.7E mb=4.8  EMSC   MINDANAO, PHILIPPINES        

P:  3JUN2021 134285     8.0N  127.0E 4.0-5.4 AAAAA  Halmahera                  

 

O:  6JUN2021 02:59:28  10.2N  126.2E mb=5.0  EMSC   PHILIPPINE ISLANDS REGION    

O: 06JUN2021 03:21:04  10.2N  126.3E mb=4.9  EMSC   PHILIPPINE ISLANDS REGION

O: 06JUN2021 03:40:15  10.2N  126.2E ML=4.8  EMSC   PHILIPPINE ISLANDS REGION

P:  7JUN2021 134327    11.0N  125.0E 3.5-4.9 AAAAA  Luzon, Philippines         

 

 

CENTRAL AND SOUTH AMERICA

 

O:  6JUN2021 04:24:31   1.0S   81.0W mb=4.5  EMSC   NEAR COAST OF ECUADOR        

O: 06JUN2021 04:31:53   0.9S   81.1W ML=4.4  EMSC   OFF COAST OF ECUADOR

P:  5JUN2021 134295     1.0S   81.0W 4.0-5.9 AAAAA  Ecuador                    

 

NEIC reported this earthquake of M 4.5 in Ecuador was felt with intensity II-III in the area(s) of Ecuador at Manta, Manabi.

 

O:  5JUN2021 08:50:13  13.9N   92.2W ML=4.1  EMSC   OFFSHORE GUATEMALA           

O: 05JUN2021 20:00:11  14.1N   92.3W ML=4.0  EMSC   OFFSHORE GUATEMALA

P:  5JUN2021 134320    14.0N   93.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

 

O: 05JUN2021 09:57:44  18.4N   69.2W ML=3.3  EMSC   DOMINICAN REPUBLIC

O:  5JUN2021 15:27:33  18.6N   69.0W ML=3.1  EMSC   DOMINICAN REPUBLIC           

O:  5JUN2021 23:13:20  18.6N   69.7W ML=3.2  EMSC   DOMINICAN REPUBLIC            

P:  4JUN2021 134339    19.0N   71.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O:  6JUN2021 05:29:05  18.7N   67.3W Md=3.4  EMSC   PUERTO RICO REGION           

P:  5JUN2021 134338    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O:  5JUN2021 23:18:30  22.4S   68.7W mb=4.0  EMSC   ANTOFAGASTA, CHILE           

P:  4JUN2021 134528    23.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O:  5JUN2021 20:46:10  18.6S  177.6W mb=4.5  EMSC   FIJI REGION                  

P:  8JUN2021 134522    19.0S  178.0W 4.0-5.7 BAAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O:  6JUN2021 01:30:45   1.4S   15.0W Mw=5.3  EMSC   NORTH OF ASCENSION ISLAND    

P: 10JUN2021 134293     1.0S   16.0W 4.0-5.4 BAAAA  Central Mid-Atlantic       

P: 31MAY2021 133999     1.0S   16.0W 4.0-5.4 CAAAA  Central Mid-Atlantic       

 

O:  5JUN2021 13:47:19  41.7S   84.3W mb=4.8  EMSC   WEST CHILE RISE              

P:  6JUN2021 134548    43.0S   83.0W 4.0-5.5 ABAAA  Chile Rise                 

 

O:  5JUN2021 12:14:34  62.3S   58.1W mb=5.0  EMSC   SOUTH SHETLAND ISLANDS       

P:  3JUN2021 134560    61.0S   57.0W 4.0-5.6 ABAAA  Southern  Ocean            

P:  7JUN2021 134560    61.0S   58.0W 4.0-5.6 ABAAA  Southern  Ocean            

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  6JUN2021 01:07:46  28.8S  176.8W mb=4.8  EMSC   KERMADEC ISLANDS REGION      

P:  4JUN2021 134530    28.0S  177.0W 4.0-5.5 AAAAA  No. Kermadec Islands       

 

O:  5JUN2021 17:14:36  31.4S  179.7E mb=4.2  EMSC   KERMADEC ISLANDS REGION      

P:  6JUN2021 134547    32.0S  178.0W 4.0-5.8 AAAAA  So. Kermadec Islands       

 

O:  5JUN2021 08:52:47  33.6S  180.0W mb=4.4  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  4JUN2021 134547    34.0S  179.0W 4.0-5.7 AAAAA  So. Kermadec Islands       

 

O:  5JUN2021 20:49:02  48.4S  165.1E mb=4.2  EMSC   OFF W. COAST OF S. ISLAND, N.Z

O: 05JUN2021 20:49:04  48.2S  165.2E ML=4.9  GEONET Felt with moderate intensity

P: 10JUN2021 134554    44.0S  168.0E 3.0-4.9 BCBAA  So. Island, N.Z.           

 

GEONET reported this earthquake was felt with moderate intensity in South Island, New Zealand by more than 1 people with weak intensity by 1; light 0; moderate 0 and extreme 0.

 

JAPAN AND KURIL ISLANDS

 

O:  5JUN2021 10:49:57  25.9N  128.5E mb=4.8  EMSC   RYUKYU ISLANDS, JAPAN        

P:  4JUN2021 134357    28.0N  127.0E 4.0-5.4 ABBAA  Ryukyu Islands             

 

O:  5JUN2021 23:23:32  36.5N  142.6E mb=4.3  EMSC   OFF EAST COAST OF HONSHU, JAPA

P:  5JUN2021 134397    36.0N  142.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 05JUN2021 18:13:41  33.0N  116.2W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 06:05:06  33.0N  115.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 08:05:54  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 11:29:06  33.1N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 11:52:58  33.1N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 12:05:35  33.1N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 12:08:55  33.1N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 12:18:58  33.1N  115.6W Ml=2.7  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 12:20:10  33.1N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 12:21:57  33.1N  115.7W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 12:54:48  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 13:18:44  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 13:38:19  33.1N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 14:19:59  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 14:38:05  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 14:44:22  33.1N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 14:59:05  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 15:08:21  33.1N  115.6W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 15:26:57  33.1N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 15:49:53  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 16:14:22  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 16:14:22  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 16:37:14  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:25:51  33.1N  115.6W ML=2.4  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:33:39  33.1N  115.7W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:40:51  33.1N  115.6W Mw=3.6  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:42:10  33.1N  115.7W ML=3.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:43:36  33.1N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:45:16  33.1N  115.7W Mw=4.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:46:39  33.1N  115.7W Mw=3.8  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:47:50  33.1N  115.6W ML=3.4  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:48:58  33.1N  115.6W Ml=3.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:50:37  33.1N  115.6W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:57:21  33.1N  115.6W ML=4.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:58:42  33.1N  115.6W ML=3.4  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:16:51  33.1N  115.6W ML=3.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:18:46  33.1N  115.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:21:48  33.1N  115.6W Mw=4.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:21:48  33.1N  115.6W Mw=4.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:33:38  33.1N  115.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:42:58  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:45:43  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:47:48  33.1N  115.6W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:52:40  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:53:46  33.1N  115.9W Ml=2.7  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:59:35  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:01:56  33.1N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:18:16  33.1N  116.1W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:22:39  33.1N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:38:59  33.1N  115.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:41:04  33.1N  115.7W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:46:54  33.1N  115.6W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:51:56  33.1N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 20:23:00  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 20:54:34  33.1N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 21:24:48  33.1N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 21:30:13  33.1N  115.7W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 21:33:17  33.1N  115.6W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 21:39:35  33.1N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 21:49:39  33.1N  115.6W ML=3.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 21:51:40  33.1N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 21:55:17  33.1N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 21:55:17  33.1N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 23:09:38  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 00:47:14  33.1N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 00:49:42  33.1N  115.7W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 04:47:32  33.1N  115.7W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 06:33:16  33.1N  115.6W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 14:21:09  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:35:10  33.2N  115.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:36:48  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:39:37  33.2N  115.7W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:53:03  33.2N  115.6W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:54:16  33.2N  115.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 17:56:02  33.2N  116.3W Mw=5.3  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:00:48  33.2N  115.7W ML=3.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:03:39  33.2N  115.6W ML=3.5  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:08:36  33.2N  115.6W Ml=2.7  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:10:11  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:11:37  33.2N  115.6W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:16:14  33.2N  115.6W ML=2.9  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:20:14  33.2N  115.6W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:20:14  33.2N  115.6W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:24:06  33.2N  115.6W Ml=2.7  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:29:47  33.2N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:32:29  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:37:19  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:40:08  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:41:37  33.2N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:48:20  33.2N  115.6W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:49:53  33.2N  115.6W ML=2.9  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 18:51:28  33.2N  115.6W Ml=2.7  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:02:42  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:05:31  33.2N  115.6W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:07:07  33.2N  115.6W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:08:09  33.2N  115.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:10:37  33.2N  115.6W ML=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:12:02  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:12:48  33.2N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:14:14  33.2N  115.6W ML=2.8  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:21:02  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 19:50:36  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 20:06:23  33.2N  115.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 20:17:58  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 20:35:30  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 20:46:58  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 21:31:39  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 22:10:19  33.2N  115.6W Ml=2.6  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 22:10:19  33.2N  115.6W Ml=2.6  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 22:42:31  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 22:42:31  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 22:49:53  33.2N  115.7W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 22:49:53  33.2N  115.7W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 23:14:21  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 23:36:14  33.2N  115.6W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 23:37:14  33.2N  116.2W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 05JUN2021 23:43:33  33.2N  115.7W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 00:12:46  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 00:15:10  33.2N  115.6W Ml=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 00:39:42  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 00:48:35  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 02:02:21  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 02:07:34  33.2N  115.6W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 02:11:07  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 02:11:46  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 02:47:58  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 02:58:53  33.2N  115.6W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 03:01:09  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 03:08:22  33.2N  115.7W Mw=3.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 03:14:19  33.2N  115.7W ML=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 04:24:37  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 04:27:00  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 04:44:40  33.2N  115.7W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 04:49:59  33.2N  115.6W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 04:52:31  33.2N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 04:56:02  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 05:01:30  33.2N  115.6W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 05:01:30  33.2N  115.6W ML=3.2  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 05:05:43  33.2N  115.5W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 05:21:29  33.2N  115.6W ML=2.0  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 05:23:57  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 05:51:15  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 06:26:56  33.2N  115.7W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 06:28:09  33.2N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 06:45:59  33.2N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 06JUN2021 06:21:38  33.3N  116.1W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O:  5JUN2021 18:44:40  32.9N  116.0W Ml=2.5  EMSC   SOUTHERN CALIFORNIA          

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California             

 

O:  5JUN2021 18:44:40  32.9N  116.0W Ml=2.5  EMSC   SOUTHERN CALIFORNIA          

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 AAAAA  So. California             

P: 29MAY2021 134118    33.4N  116.7W 2.5-4.4 CAAAA  So. California             

 

O:  6JUN2021 06:32:27  33.5N  116.1W Ml=2.1  EMSC   SOUTHERN CALIFORNIA           

P: 29MAY2021 134118    33.4N  116.7W 2.5-4.4 CAAAA  So. California             

 

O:  5JUN2021 13:53:43  35.8N  117.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

O: 05JUN2021 22:25:11  36.0N  117.3W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 05JUN2021 22:25:11  36.0N  117.3W Ml=2.5  EMSC   CENTRAL CALIFORNIA

P:  4JUN2021 134410    35.8N  117.6W 2.5-5.1 AAAAA  So. California             

 

O:  5JUN2021 10:16:19  36.7N  115.8W ml=2.5  EMSC   NEVADA                       

P:  3JUN2021 134369    37.8N  115.8W 2.5-4.9 ABAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.5 in Nevada was felt with intensity II-III in the area(s) of Nevada at Indian Springs and Las Vegas.

 

O:  5JUN2021 17:52:32  37.5N  118.8W Md=2.5  EMSC   CENTRAL CALIFORNIA           

P:  4JUN2021 134368    37.4N  118.6W 2.5-4.9 AAAAA  California/Nevada area     

 

O:  5JUN2021 19:10:29  37.6N  121.7W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P:  6JUN2021 134376    37.7N  121.9W 2.5-4.5 AAAAA  Central California          

 

O:  5JUN2021 15:24:46  39.1N  120.0W Md=2.5  EMSC   NORTHERN CALIFORNIA          

O: 05JUN2021 21:55:22  39.1N  120.0W Md=2.0  EMSC   NORTHERN CALIFORNIA

P:  4JUN2021 134373    39.3N  120.0W 2.5-4.7 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.5 in the Lake Tahoe, California area was felt with intensity II-III in the area(s) of Lake Tahoe, California in Tahoe Vista, and in Nevada at Glenbrook and Dayton.

 

 

ALASKA

 

O: 05JUN2021 22:10:47  56.5N  156.7W mb=4.2  EMSC   ALASKA PENINSULA

O:  5JUN2021 12:43:07  55.0N  158.0W ML=3.6  EMSC   SOUTH OF ALASKA              

P:  4JUN2021 134472    54.8N  158.7W 3.5-4.9 AAAAA  Alaska Peninsula           

 

O:  5JUN2021 19:12:45  60.0N  153.2W ML=3.1  EMSC   SOUTHERN ALASKA               

P:  3JUN2021 134493    60.5N  151.5W 3.2-5.1 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

 

O:  6JUN2021 05:23:04  42.3N  126.3W ML=2.9  EMSC   OFF COAST OF OREGON          

P:  4JUN2021 134457    42.5N  126.8W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

O:  5JUN2021 12:20:57  43.9N  128.2W ML=3.1  EMSC   OFF COAST OF OREGON          

P:  2JUN2021 134458    43.9N  128.4W 3.0-5.0 BAAAA  Off Coast of Oregon        

 

O: 06JUN2021 04:14:23  45.3N  121.7W Ml=2.1  EMSC   MOUNT HOOD AREA, OREGON

O: 06JUN2021 03:51:37  45.4N  121.7W MD=4.0  EMSC   MOUNT HOOD AREA, OREGON

O:  6JUN2021 03:55:36  45.3N  121.7W ML=2.4  EMSC   MOUNT HOOD AREA, OREGON      

P:  4JUN2021 134461    45.3N  121.7W 2.0-4.0 AAAAA  Oregon state, U.S.          

 

ROCKY MOUNTAINS REGION

 

O:  5JUN2021 12:59:46  31.6N  104.1W mb=2.9  EMSC   WESTERN TEXAS                

P:  7JUN2021 134400    32.5N  104.6W 2.0-4.0 AAAAA  SW U.S.A                   

 

O: 05JUN2021 08:53:38  44.3N  114.8W Ml=2.1  EMSC   SOUTHERN IDAHO

O: 05JUN2021 10:07:09  44.4N  115.2W Ml=2.0  EMSC   SOUTHERN IDAHO

O:  5JUN2021 10:23:29  44.2N  115.1W Ml=2.6  EMSC   SOUTHERN IDAHO               

P:  4JUN2021 134446    44.6N  115.0W 2.0-4.0 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O:  5JUN2021 12:18:20  36.4N   91.6W Md=2.3  EMSC   ARKANSAS                     

P:  2JUN2021 134389    38.0N   90.0W 2.0-4.2 BBBAA  New Madrid area            

 

O: 06JUN2021 03:38:57  36.5N   99.0W mb=2.4  EMSC   OKLAHOMA

O:  6JUN2021 00:35:22  36.5N   99.0W ML=2.2  EMSC   OKLAHOMA                     

P:  7JUN2021 134420    37.0N   98.0W 2.0-4.3 AAAAA  Southern Plains            

 

HAWAII

 

O:  6JUN2021 01:29:38  19.2N  155.5W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P:  8JUN2021 134325    19.3N  155.2W 3.0-4.4 AAAAA  Hawaii                     

 

STRONG QUAKES SHAKE COAST OF OREGON

 

EARTHQUAKE SUMMARY FOR JUNE 4, 2021

 

The strongest earthquakes in the world today were a pair of events of M 5.9 off the coast of Oregon. These were felt lightly on the Oregon coastline at Gold Beach (V), Coos Bay, Grants Pass, Mapleton, Brookings, Rogue Rive, Eugene, Salem, Oregon City and in Northern California at Crescent City, McKinleyville, Arcata.

 

These earthquake had been expected at this time due to their distance of 103  degrees from the M 6.1 which occurred yesterday in the Molucca Sea, Indonesia. At the time this summary reported on this possibility as:

 

"Areas off the coast of Oregon are at 103 degrees from the Molucca Sea event and may see triggered seismicity in the next several days. An example of this interaction occurred on December 1, 2013 when an M 6.4 in the Banda Sea was followed about two hours later by an M 5.5 off the coast of Oregon and Northern California as noted at the time in this summary:

 

"(this event  off the coast of northern California) also lies at 105 degrees from the earthquake in the Banda Sea which preceded it by several hours. As seismic energy from the Banda Sea quake was concentrated in this area of Northern California it seems likely that this event was triggered by those effects." (December 1, 2013)

 

A similar situation occurred when an M 7.0 in the Molucca Sea area of Indonesia on July 22, 1996 was followed by an M 6.2 off the coast of northern California less than two days later. Other sets of this type occurred with an M 6.6 in Indonesia on August 2, 1991 with M 6.6 followed on August 4, 1992 by an M 5.7 off the coast of Oregon on August 4, 1992 and in late December, 1992 with an Indonesian M 7.3 followed several days later by an M 5.5 off Oregon among others in 1990 and 1991." (June 4, 2021)

 

Today's activity of M 5.9 occurred within about half an hour of local solar midnight with a strong aftershock near local solar noon of M 4.7. Tidal stresses maximize near these hours and these were probably enhanced by those stresses. The last earthquake of M>=5.9 within about 200 km of today's epicenters occurred on September 5, 2019 with M 5.9 following an M 6.4 on August 29, 2019. These events were about 200 km northwest of today's activity. The last such event within about 150 km of today's epicenter were an M 7.1 on June 15, 2005 and an M 6.2 on July 24, 1996. When the M 6.4 occurred on August 29, 2019 this summary noted in this regard:

 

"This is the strongest earthquake off the coast of Oregon within about 250 km of this epicenter in more than 10 years - since an M 6.3 on January 10, 2008 and prior to that an M 6.3 on January 16, 2003. The only event in the region with greater magnitude in the past 30 years was an M 6.9 on July 13, 1991."  (September 5, 2019)

 

Forecast 134457 had expected today's activity was likely within about 50 km  of the epicenters off the coast of Oregon around June 4. These events are located at 103 degrees from the M 6.1 in the Molucca Sea, Indonesia reported in the previous issue of this summary and were probably promoted by energy from that source.

 

O: 04JUN2021 08:37:48  42.2N  126.2W mb=4.2  EMSC   OFF COAST OF OREGON

O: 04JUN2021 07:52:43  42.3N  126.3W Mw=5.9  EMSC   OFF COAST OF OREGON

O: 04JUN2021 08:13:32  42.3N  126.4W mb=3.9  EMSC   OFF COAST OF OREGON

O: 04JUN2021 08:17:01  42.3N  126.2W Mw=5.9  EMSC   OFF COAST OF OREGON

O: 04JUN2021 09:20:01  42.3N  126.4W ML=3.2  EMSC   OFF COAST OF OREGON

O: 04JUN2021 19:19:51  42.3N  126.4W ML=3.0  EMSC   OFF COAST OF OREGON

O: 04JUN2021 19:28:11  42.3N  126.3W Mw=4.7  EMSC   OFF COAST OF OREGON

O: 05JUN2021 01:05:44  42.4N  126.3W ML=3.1  EMSC   OFF COAST OF OREGON

O:  4JUN2021 08:37:48  42.2N  126.2W mb=4.2  EMSC   OFF COAST OF OREGON          

P:  4JUN2021 134457    42.5N  126.8W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

The strongest earthquake California today was an M 3.0 off the coast of

Northern California. It was probably part of the activity off the coast of Oregon. Both occurred at 103 degrees from yesterday's event in the Molucca Sea, Indonesia. Forecast 134457 had expected today's event off northern California within about 15 km was likely around June 6.

 

O:  5JUN2021 05:28:53  40.4N  125.9W ML=3.0  EMSC   OFF COAST OF NORTHERN CALIFORN

P:  6JUN2021 134457    40.5N  125.8W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

An unusual earthquake of M 3.1 occurred south of Mitchell, South Dakota on the Nebraska-South Dakota border today. NEIC reported maximum intensity with this quake was V in Fairfax and Herrick and Saint Charles, South Dakota with III-IV in South Dakota at Lake Andes, Bonesteel, Burke, Platte, and in Nebraska at Bristol, Butte, Oneill, Atkinson, Lincoln, Spencer. It was followed by an M 3.1 aftershock felt in much the same area. This is the strongest earthquake within about 200 km of this epicenter in South Dakota and Nebraska since an M 4.3 on November 3, 2002 about 30 km south of today's epicenter.  Earthquakes in western and central South Dakota often occur shortly before or in conjunction with strong earthquakes along the western rim of the North American Tectonic plate. As today's activity occurred hours after the two earthquakes off the coast of Oregon of M 5.9, they may have been more directly associated with that activity and less or a precursor to another strong earthquake off western North America, however. When the earthquake in South Dakota occurred on November 3, 2002, it was followed 1-2 hours later by an M 8.0 in Denali National Park, Alaska. This summary noted the relation between North America quakes and those in this region of Nebraska and South Dakota at the time as:

 

 

"A great (Mw>=7.9) earthquake hit south-central Alaska, today, cracking highways and roads (a 3-foot crack was reported in the Parks Highway between Fairbanks and Anchorage) and knocking over fuel tanks and shaking rural homes. ...

 

This is the largest earthquake within the North American Continent north of Central America since the Great Good Friday earthquake in Alaska on March  28, 1964 (Mw 9.6), the largest earthquake in North America in the 20th Century.

 

The Alaskan earthquake today was preceded by a Ml 4.3 event about an hour and a half prior in eastern Nebraska. Two earthquakes occurred in Kansas on November 1 (Ml 3.0, 2.8). Such earthquakes often precede great earthquakes in Alaska and other areas on the borders of North America.  The resemblance of this great plains foreshock series to that which preceded the great Alaska earthquake of March, 1964 is uncanny, if there is no causative relation. In 1964 an Ml 4.3 earthquake was felt along the South Dakota/ Nebraska border about 30 minutes before the Great quake in Alaska, one of the largest ever recorded in this region. This had been preceded by smaller earthquake in the same region on March 24 and 27. Today's Nebraska earthquake occurred 1.5 hours before the great Alaska event and had been preceded by the Kansas earthquakes by two days.  Since all of these are unusual events, their coincidence in time (in more than one occasion) may be significant." (November 3, 2002)

 

Today's epicenter is at 101-102 degrees from the Qinghai, China of M 7.4 on May 21, 2021 and from the M 8.1 in the Kermadec Islands of March 4, 2021 and was probably promoted by energy from those epicenters.

 

O: 04JUN2021 15:25:00  43.0N   98.7W Mw=3.7  EMSC   SOUTH DAKOTA

O:  4JUN2021 22:50:40  43.0N   98.7W mb=3.1  EMSC   SOUTH DAKOTA                 

 

A moderate earthquake of M 5.4 was preceded by moderate foreshocks of M 4.6 and 4.7 in the Reykjanes Ridge of the northern Mid-Atlantic south of Iceland today. An M 4.6 hit about 100 km south of this epicenter on November 3, 2020 but the last event within about 200 km of this epicenter with M>=5.4 occurred on March 10, 2019 with M 5.9 and 5.5.  Forecast 134483 had expected today's event was likely within about 50 km of this epicenter around June 7, 2021. Today's event may have been promoted by high tidal stresses as it occurred within about 30 minutes of local solar midnight, a time when tidal stresses maximize. A similar series occurred on September 5, 2019 with the last strong quake off the Oregon coast. Those earthquakes  were located to the south of today's events in the Reykjanes Ridge. When an M 5.4 and 6.0 occurred in the Macquarie Islands on May 5 and 7, 2021 this summary noted the antipodal relation with the Reykjanes Islands as:

 

"The antipode of this event (in the Macquarie Island region) is at 57N 33W in the Reykjanes Ridge in the north Atlantic Ridge south of Iceland. Some seismic enhancement in this region is possible following today's event in the Macquarie Island area." May 6, 2021)

 

A similar pair occurred on March 20, 2021 as noted at the time in this summary:

 

"A strong near-antipodal pair also occurred today in the Macquarie Islands south of Australia and in the northern mid-Atlantic Ridge with M 6.1 and 5.7 respectively." (March 20, 2021)

 

Note that today's Reykjanes activity is within about 100 km of the antipode of that in the Macquarie Islands and was probably enhanced by energy from that antipode. Today's activity is also at 143 degrees from the M 8.1 in the Kermadec Islands of March 4, 2021 and was probably promoted by energy from that source.

 

O: 05JUN2021 01:31:46  58.4N   32.1W Mw=5.4  EMSC   REYKJANES RIDGE

O: 04JUN2021 21:02:56  58.8N   31.8W mb=4.6  EMSC   REYKJANES RIDGE

O:  4JUN2021 21:07:11  58.3N   32.0W mb=4.7  EMSC   REYKJANES RIDGE              

P:  7JUN2021 134483    58.0N   32.0W 4.0-5.6 BAAAA  North Mid-Atlantic Ridge   

 

The only tropical storm currently active is Tropical Storm Choi-Wan. It passed near Taiwan today and was accompanied by a pair of moderate quakes of M 4.6 and 4.3 beneath eye as it passed over. They were probably triggered by stresses related to TS Choi-Wan. This summary noted this in previous issues as:

 

"TS Choi-Wan (04W) continued today near the Ryukyu Islands, Japan  with winds up to 45 kts. It is expected to track to the north and west over the next four days and could help promote seismicity in the region of Taiwan, the Ryukyu Islands and southern Japan while in the area." (June 5-6, 2021)

 

Forecast 134357 had expected today's activity Taiwan was likely within about 50 km of these epicenters around June 5.

 

O: 05JUN2021 00:01:01  24.9N  122.6E mb=4.6  EMSC   TAIWAN REGION

O:  4JUN2021 16:19:28  24.9N  122.5E mb=4.3  EMSC   TAIWAN REGION                

P:  5JUN2021 134357    25.0N  123.0E 4.0-5.4 AAAAA  Ryukyu Islands             

 

An M 5.4 also occurred in central Chile today off the coast of Maule.  NEIC reported this earthquake of M 5.4 in Santiago, Chile was felt with intensity II-III in the area(s) of Santiago, Chile. GUC reported this earthquake was felt with intensity  IV in  Maule at Constitucion; III in Cauquenes, San Javier and II in Pelluhue and Pencahue and in Nuble with III in Trehuaco and II in Cobquecura, Chile. Forecast 134540 had expected this activity was likely within about 100 km of the epicenter around June 7. This epicenter is near the antipode of the M 7.4 in Qinghai, China of May 21 and may have been promoted by energy from that source.

 

O:  5JUN2021 03:05:11  34.9S   73.9W Mw=5.4  EMSC   OFF COAST OF O'HIGGINS, CHILE

O:  5JUN2021 03:05     35.0S   73.9W mb=5.3  GUC    Maule at Constitucion; III in

P:  7JUN2021 134540    36.0S   73.0W 4.0-5.5 AAAAA  Central Chile              

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:  4JUN2021 12:45:13  55.9N  111.0E mb=4.0  EMSC   LAKE BAYKAL REGION, RUSSIA   

P: 10JUN2021 134487    56.0N  110.0E 3.0-4.4 CAAAA  So. Siberia                

 

O:  5JUN2021 03:58:35  48.2N  146.0E mb=4.2  EMSC   SEA OF OKHOTSK               

P: 28MAY2021 134181    48.0N  147.0E 3.5-5.5 CAAAA  So. Kurils                 

 

O: 05JUN2021 00:01:01  24.9N  122.6E mb=4.6  EMSC   TAIWAN REGION

O:  4JUN2021 16:19:28  24.9N  122.5E mb=4.3  EMSC   TAIWAN REGION                

P:  5JUN2021 134357    25.0N  123.0E 4.0-5.4 AAAAA  Ryukyu Islands             

 

 

INDONESIA AND PHILIPPINES

 

O:  4JUN2021 09:25:27   0.1N  128.5E ML=4.2  EMSC   HALMAHERA, INDONESIA         

P: 10JUN2021 134285     3.0N  129.0E 4.0-5.4 CCAAA  Halmahera                  

 

O:  4JUN2021 14:50:21   0.2N  122.2E ML=4.0  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  7JUN2021 134312     1.0S  122.0E 4.0-5.4 BBAAA  Sulawesi area               

P: 31MAY2021 133979     1.0N  122.0E 4.0-5.5 BAAAA  Celebes Sea                

 

O:  4JUN2021 11:02:24   1.2N  127.3E ML=4.4  EMSC   HALMAHERA, INDONESIA         

P:  2JUN2021 134286     2.0N  125.0E 4.0-5.6 AABAA  Mindanao, Philippines      

 

O:  4JUN2021 10:52:30   1.8N  101.1E ML=4.5  EMSC   NORTHERN SUMATRA, INDONESIA  

P:  6JUN2021 134288     0.0N   98.0E 4.0-5.4 ABCAA  So. Sumatera               

 

O:  4JUN2021 08:57:35   6.2S  130.2E ML=4.3  EMSC   BANDA SEA                    

O:  5JUN2021 03:08:34   7.0S  129.5E ML=4.2  EMSC   BANDA SEA                    

P:  5JUN2021 134291     7.0S  129.0E 4.0-5.4 AAAAA  Banda Sea                  

 

O:  4JUN2021 14:07:47   7.5N  124.3E ML=4.2  EMSC   MINDANAO, PHILIPPINES        

P:  5JUN2021 134279     7.0N  124.0E 4.0-5.4 AAAAA  Central Philippines        

 

O:  4JUN2021 13:00:08   8.4S  116.1E ML=4.3  EMSC   LOMBOK REGION, INDONESIA     

P:  7JUN2021 134313     8.0S  117.0E 4.0-5.4 BAAAA  Sumbawa Island area        

 

O:  4JUN2021 12:23:49   9.0S  118.1E ML=4.3  EMSC   SUMBAWA REGION, INDONESIA    

P:  4JUN2021 134313     8.0S  119.0E 4.0-5.5 AAAAA  Sumbawa Island area        

 

O:  5JUN2021 04:05:50  11.3S  119.6E mb=4.3  EMSC   SOUTH OF SUMBA, INDONESIA    

P:  5JUN2021 134519    11.0S  118.0E 4.0-5.6 AABAA  So. of Indonesia           

 

O: 04JUN2021 15:17:50   0.2N  126.4E mb=4.9  EMSC   MOLUCCA SEA

O: 04JUN2021 11:47:36   0.3N  126.5E mb=4.6  EMSC   MOLUCCA SEA

O: 04JUN2021 12:24:16   0.3N  126.4E ML=4.2  EMSC   MOLUCCA SEA

O: 04JUN2021 13:45:15   0.3N  126.3E Mw=5.2  EMSC   MOLUCCA SEA

O: 04JUN2021 15:24:46   0.3N  126.2E mb=5.0  EMSC   MOLUCCA SEA

O: 04JUN2021 18:01:43   0.3N  126.2E ML=4.0  EMSC   MOLUCCA SEA

O:  4JUN2021 14:08:04   0.1N  126.2E mb=4.8  EMSC   MOLUCCA SEA                   

P:  7JUN2021 134286     0.0N  124.0E 4.0-5.5 BABAA  Mindanao, Philippines      

 

O: 04JUN2021 14:27:01   0.5N   97.4E ML=4.2  EMSC   NIAS REGION, INDONESIA

O:  4JUN2021 13:34:45   0.3N   96.9E ML=4.7  EMSC   NIAS REGION, INDONESIA       

P:  4JUN2021 134288     1.0N   97.0E 4.0-5.4 AAAAA  Nicobar Islands            

 

CENTRAL AND SOUTH AMERICA

 

O:  4JUN2021 12:02:27   1.0S   81.0W ML=4.0  EMSC   NEAR COAST OF ECUADOR        

P:  5JUN2021 134295     1.0S   81.0W 4.0-5.9 AAAAA  Ecuador                     

 

O:  4JUN2021 17:54:05   8.0S   74.6W mb=4.4  EMSC   CENTRAL PERU                 

O:  4JUN2021 22:29:57   8.7S   74.5W mb=4.4  EMSC   CENTRAL PERU                 

P:  6JUN2021 134292     8.0S   74.0W 3.5-5.1 AAAAA  Brazil                     

 

O: 05JUN2021 03:40:35  15.5N   94.9W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO

O:  5JUN2021 03:51:22  15.4N   94.7W ML=4.3  EMSC   OFFSHORE OAXACA, MEXICO      

P:  7JUN2021 134320    15.0N   95.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O:  4JUN2021 22:36:54  15.7S   75.3W ML=4.5  EMSC   NEAR COAST OF CENTRAL PERU   

P: 27MAY2021 134225    15.0S   76.0W 4.0-5.7 CAAAA  Central Peru               

 

O:  4JUN2021 19:07:24  16.9N  100.6W ML=4.2  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  5JUN2021 134330    17.0N  102.0W 3.5-5.6 AABAA  Michoacan, Mexico          

 

O:  4JUN2021 15:41:07  18.8N   67.1W ML=3.1  EMSC   PUERTO RICO REGION           

P:  5JUN2021 134338    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O:  4JUN2021 18:45:07  19.3N  102.2W ML=4.2  EMSC   MICHOACAN, MEXICO            

P:  7JUN2021 134330    19.0N  103.0W 3.5-5.6 BAAAA  Michoacan, Mexico          

 

O:  4JUN2021 14:46:25  21.5S   70.5W mb=4.9  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

P:  4JUN2021 134528    23.0S   69.0W 4.0-5.4 ABBAA  Coast No. Chile            

 

NEIC reported this earthquake of M 4.9 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile in Iquique, Tarapaca.

 

O:  4JUN2021 08:50:43  31.1S   67.6W ML=4.1  EMSC   SAN JUAN, ARGENTINA          

P:  2JUN2021 134539    32.0S   67.0W 4.0-5.9 AAAAA  Central Chile              

 

O:  5JUN2021 03:05:11  34.9S   73.9W Mw=5.4  EMSC   OFF COAST OF O'HIGGINS, CHILE

P:  7JUN2021 134540    36.0S   73.0W 4.0-5.5 AAAAA  Central Chile               

 

 

AFRICA AND EUROPE

 

O:  4JUN2021 20:23:09  36.4N   27.1E mb=4.2  EMSC   DODECANESE IS.-TURKEY BORDER R

P: 30MAY2021 134074    37.0N   27.0E 3.0-4.4 BAAAA  Aegean Sea                 

 

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

 

SOUTHWEST PACIFIC

 

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

 

OCEAN RIDGES

 

O: 05JUN2021 01:31:46  58.4N   32.1W Mw=5.4  EMSC   REYKJANES RIDGE

O: 04JUN2021 21:02:56  58.8N   31.8W mb=4.6  EMSC   REYKJANES RIDGE

O:  4JUN2021 21:07:11  58.3N   32.0W mb=4.7  EMSC   REYKJANES RIDGE              

P:  7JUN2021 134483    58.0N   32.0W 4.0-5.6 BAAAA  North Mid-Atlantic Ridge   

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  4JUN2021 15:40:56  33.4S  178.8E mb=4.2  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  6JUN2021 134544    37.0S  178.0E 3.0-4.5 ACAAA  North Island, N.Z.         

 

O:  5JUN2021 02:31:31  35.0S  179.5W mb=4.7  EMSC   EAST OF NORTH ISLAND, N.Z.   

P:  4JUN2021 134547    34.0S  179.0W 4.0-5.7 AAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O:  4JUN2021 16:48:54  22.3N  143.9E mb=4.8  EMSC   VOLCANO ISLANDS, JAPAN REGION

P:  5JUN2021 134362    23.0N  143.0E 4.0-5.6 AAAAA  Volcano Islands            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  5JUN2021 03:45:49  31.9N  116.4W Ml=2.2  EMSC   BAJA CALIFORNIA, MEXICO      

O: 05JUN2021 03:30:23  32.0N  116.4W Ml=2.4  EMSC   BAJA CALIFORNIA, MEXICO

P:  3JUN2021 134403    32.0N  117.4W 2.5-4.4 AAAAA  So. California              

 

O:  4JUN2021 12:18:09  33.9N  116.1W Ml=2.5  EMSC   SOUTHERN CALIFORNIA          

P:  7JUN2021 134406    33.9N  116.6W 2.5-4.6 BAAAA  So. California             

 

O:  4JUN2021 11:47:51  36.5N  118.0W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P:  2JUN2021 134365    36.5N  118.1W 2.5-5.0 AAAAA  California/Nevada area     

 

O:  5JUN2021 00:12:19  37.5N  119.4W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P:  3JUN2021 134367    37.3N  119.4W 2.5-4.7 AAAAA  California/Nevada area     

 

O:  4JUN2021 23:36:55  38.1N  118.1W ml=2.1  EMSC   NEVADA                       

O: 04JUN2021 20:54:35  38.2N  118.0W ml=2.0  EMSC   NEVADA

O: 04JUN2021 22:11:54  38.2N  117.7W ml=2.0  EMSC   NEVADA

P:  6JUN2021 134370    37.9N  118.2W 2.5-4.5 AAAAA  California/Nevada area     

 

O:  5JUN2021 05:27:08  38.2N  116.7W ml=2.1  EMSC   NEVADA                       

P:  3JUN2021 134369    37.8N  115.8W 2.5-4.9 AAAAA  California/Nevada area     

 

O:  5JUN2021 05:28:53  40.4N  125.9W ML=3.0  EMSC   OFF COAST OF NORTHERN CALIFORN

P:  6JUN2021 134457    40.5N  125.8W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

ALASKA

 

O:  4JUN2021 11:44:32  52.5N  170.3W mb=3.7  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  7JUN2021 134479    51.9N  169.2W 3.5-4.9 BAAAA  Fox Islands, Aleutians      

 

O:  4JUN2021 23:04:28  53.1N  166.5W mb=3.8  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  7JUN2021 134479    53.6N  166.1W 3.5-5.2 BAAAA  Fox Islands, Aleutians     

 

O:  4JUN2021 22:40:27  63.4N  149.6W ML=3.4  EMSC   CENTRAL ALASKA               

P:  5JUN2021 134499    63.0N  151.5W 3.2-5.0 AAAAA  Central Alaska             

 

O:  5JUN2021 05:27:51  65.2N  164.6W ML=3.3  EMSC   NORTHERN ALASKA              

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  4JUN2021 21:13:10  48.1N  121.9W Ml=2.0  EMSC   WASHINGTON                   

P:  4JUN2021 134468    48.4N  123.2W 2.0-4.1 AAAAA  Washington state, U.S.     

 

O: 04JUN2021 08:37:48  42.2N  126.2W mb=4.2  EMSC   OFF COAST OF OREGON

O: 04JUN2021 07:52:43  42.3N  126.3W Mw=5.9  EMSC   OFF COAST OF OREGON

O: 04JUN2021 08:13:32  42.3N  126.4W mb=3.9  EMSC   OFF COAST OF OREGON

O: 04JUN2021 08:17:01  42.3N  126.2W Mw=5.9  EMSC   OFF COAST OF OREGON

O: 04JUN2021 09:20:01  42.3N  126.4W ML=3.2  EMSC   OFF COAST OF OREGON

O: 04JUN2021 19:19:51  42.3N  126.4W ML=3.0  EMSC   OFF COAST OF OREGON

O: 04JUN2021 19:28:11  42.3N  126.3W Mw=4.7  EMSC   OFF COAST OF OREGON

O: 04JUN2021 19:28:11  42.3N  126.3W Mw=4.7  EMSC   OFF COAST OF OREGON

O: 05JUN2021 01:05:44  42.4N  126.3W ML=3.1  EMSC   OFF COAST OF OREGON

O:  4JUN2021 08:37:48  42.2N  126.2W mb=4.2  EMSC   OFF COAST OF OREGON          

P:  4JUN2021 134457    42.5N  126.8W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

ROCKY MOUNTAINS REGION

 

O: 04JUN2021 08:14:01  44.5N  115.2W Ml=2.4  EMSC   SOUTHERN IDAHO

O:  4JUN2021 18:59:54  44.4N  115.2W Ml=2.2  EMSC   SOUTHERN IDAHO               

P:  4JUN2021 134446    44.6N  115.0W 2.0-4.0 AAAAA  Montana/Idaho              

 

O:  4JUN2021 07:54:58  41.3N  113.3W Ml=3.1  EMSC   UTAH                         

P:  7JUN2021 134425    38.3N  112.2W 2.0-3.9 BCAAA  Utah area                  

 

 

EASTERN U.S./CANADA

 

O: 04JUN2021 15:25:00  43.0N   98.7W Mw=3.7  EMSC   SOUTH DAKOTA

O:  4JUN2021 22:50:40  43.0N   98.7W mb=3.1  EMSC   SOUTH DAKOTA                 

 

HAWAII

 

O: 04JUN2021 19:17:42  19.2N  155.5W ML=3.4  EMSC   ISLAND OF HAWAII, HAWAII

O: 04JUN2021 08:34:19  19.3N  155.5W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII

O:  4JUN2021 22:25:20  19.3N  155.5W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P:  5JUN2021 134325    18.8N  155.2W 3.0-4.4 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.1 in Hawaii was felt with intensity II-III in the area(s) of Hawaii in Kailua Kona.

 

STRONG QUAKE IN MOLUCCA SEA MAY ENHANCE SEISMICITY OFF CALIFORNIA AND OREGON

 

EARTHQUAKE SUMMARY FOR JUNE 3, 2021

 

The strongest earthquake in the world today was an M 6.1 in the Molucca Sea, Indonesia. NEIC reported this event was felt with intensity II in Manado, Sulawesi. BMG reported it was felt with intensity III in Ternate and II-III in Labuha and Manado, Indonesia. It was followed by a series of moderate aftershocks which were reported felt with intensity II-III in Ternate. An earthquake of M 7.1 occurred about 150 km north of this on November 14, 2019. The last earthquake M>=6.1 within about 250 km of today's epicenter occurred as an M 7.1 about 150 km north of this on November 14, 2019 and an M 6.9 on July 7, 2019. Forecast 134286 had expected today's activity within about 150 km of these epicenters was likely around June 2. This activity is at the sixth node (60 degrees) from the M 8.1 in the Kermadec Islands of March 4 and from the M 6.7 in the Indian Ocean of May 12, 2021 and was probably promoted by energy from those sources.

 

O: 04JUN2021 03:31:09   0.2N  126.5E ML=4.2  EMSC   MOLUCCA SEA

O: 03JUN2021 10:28:19   0.3N  126.3E mb=4.8  EMSC   MOLUCCA SEA

O: 03JUN2021 11:14:15   0.3N  126.4E mb=4.5  EMSC   MOLUCCA SEA

O: 03JUN2021 11:19:03   0.3N  126.5E mb=4.9  EMSC   MOLUCCA SEA

O: 03JUN2021 12:03:03   0.3N  126.5E mb=4.5  EMSC   MOLUCCA SEA

O: 03JUN2021 13:53:54   0.3N  126.5E mb=4.7  EMSC   MOLUCCA SEA

O: 03JUN2021 15:27:18   0.3N  126.5E ML=4.1  EMSC   MOLUCCA SEA

O: 03JUN2021 10:21:36   0.4N  126.4E ML=4.5  EMSC   MOLUCCA SEA

O: 03JUN2021 10:23:26   0.4N  126.4E mb=5.1  EMSC   MOLUCCA SEA

O: 03JUN2021 13:01:09   0.4N  126.5E ML=4.1  EMSC   MOLUCCA SEA

O: 03JUN2021 10:17:13   0.5N  126.5E ML=4.5  EMSC   MOLUCCA SEA

O: 03JUN2021 23:07:15   0.8N  126.1E ML=4.0  EMSC   MOLUCCA SEA

O:  3JUN2021 10:09:55   0.3N  126.2E Mw=6.1  EMSC   MOLUCCA SEA                  

P:  2JUN2021 134286     2.0N  125.0E 4.0-5.6 ABBAA  Mindanao, Philippines      

 

 

An M 3.4-3.6 earthquake occurred today in Central California near San Jose. It was reported by NEIC to have been felt with intensity IV in San Jose and II in Milpitas and others of California near San Francisco and San Jose. The last earthquake within about 50 km of this epicenter near San Jose was an M 3.6 on April 25, 2021 and an M 3.8 on February 22, 2021. The last earthquake in the area of M>=4.5 occurred as an M 4.5 on October 15, 2019. This epicenter is near 106 degrees from the M 6.1 in the Molucca Sea earlier in the day and may have been promoted by energy from that source. Areas off the coast of Oregon are at 103 degrees from the Molucca Sea event and may see triggered seismicity in the next several days. An example of this interaction occurred on December 1, 2013 when an M 6.4 in the Banda Sea was followed about two hours later by an M 5.5 off the coast of Oregon and Northern California as noted at the time in this summary:

 

"(this event  off the coast of northern California) also lies at 105 degrees from the earthquake in the Banda Sea which preceded it by several hours. As seismic energy from the Banda Sea quake was concentrated in this area of Northern California it seems likely that this event was triggered by those effects." (December 1, 2013)

 

A similar situation occurred when an M 7.0 in the Molucca Sea area of Indonesia on July 22, 1996 was followed by an M 6.2 off the coast of northern California less than two days later. Other sets of this type occurred with an M 6.6 in Indonesia on August 2, 2991 with M 6.6 followed on August 4, 1992 by an M 5.7 off the coast of Oregon on August 4, 1992 and in late December, 1992 with an Indonesian M 7.3 followed several days later by an M 5.5 off Oregon among others in 1990 and 1991.

 

Forecast 134376 had expected today's activity within about 20 km was likely in early June. This activity is also located at the fifth node (72 degrees) from recent strong earthquakes off eastern Honshu, Japan and may have been promoted from that source.

 

O: 03JUN2021 13:58:28  37.4N  121.7W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O:  3JUN2021 12:15:32  37.4N  121.7W ML=3.4  EMSC   NORTHERN CALIFORNIA          

O:  3JUN2021 12:15:32  37.4N  121.7W ML=3.6  ANSS   NORTHERN CALIFORNIA          

P:  3JUN2021 134376    37.8N  122.6W 2.5-4.4 AAAAA  Central California         

P:  8JUN2021 134376    37.3N  121.6W 2.5-4.4 BAAAA  Central California         

 

 

An M 2.8 did occur today in northern California at 103 degrees from the M 6.1 in the Molucca Sea and was probably promoted by energy from that source.  Forecast 134456 had expected this activity around June 4.

 

O:  3JUN2021 19:34:02  41.0N  123.8W Md=2.8  EMSC   NORTHERN CALIFORNIA          

P:  4JUN2021 134456    40.6N  124.9W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

The strongest earthquake in the U.S. or Canada today was an M 4.0 in Central Alaska. NEIC reported this earthquake of M 3.9-4.0 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska with intensity V in Fairbanks and II-III in Talkeetna, Chugiak, Wasilla, Eagle River, Anchorage.  This is an aftershock of the M 6.1 which hit the area on May 31 - the strongest since then. Forecast 134497 had expected today's event was likely within about  50 km around June 4.

 

O:  3JUN2021 18:11:14  62.4N  148.3W ML=4.0  EMSC   CENTRAL ALASKA                

O:  3JUN2021 18:11:14  62.4N  148.3W ML=3.9  ANSS   CENTRAL ALASKA               

P:  4JUN2021 134497    62.7N  148.1W 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

 

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

 

INDONESIA AND PHILIPPINES

 

O: 04JUN2021 03:31:09   0.2N  126.5E ML=4.2  EMSC   MOLUCCA SEA

O: 03JUN2021 10:28:19   0.3N  126.3E mb=4.8  EMSC   MOLUCCA SEA

O: 03JUN2021 11:14:15   0.3N  126.4E mb=4.5  EMSC   MOLUCCA SEA

O: 03JUN2021 11:19:03   0.3N  126.5E mb=4.9  EMSC   MOLUCCA SEA

O: 03JUN2021 12:03:03   0.3N  126.5E mb=4.5  EMSC   MOLUCCA SEA

O: 03JUN2021 13:53:54   0.3N  126.5E mb=4.7  EMSC   MOLUCCA SEA

O: 03JUN2021 15:27:18   0.3N  126.5E ML=4.1  EMSC   MOLUCCA SEA

O: 03JUN2021 10:21:36   0.4N  126.4E ML=4.5  EMSC   MOLUCCA SEA

O: 03JUN2021 10:23:26   0.4N  126.4E mb=5.1  EMSC   MOLUCCA SEA

O: 03JUN2021 13:01:09   0.4N  126.5E ML=4.1  EMSC   MOLUCCA SEA

O: 03JUN2021 10:17:13   0.5N  126.5E ML=4.5  EMSC   MOLUCCA SEA

O: 03JUN2021 23:07:15   0.8N  126.1E ML=4.0  EMSC   MOLUCCA SEA

O:  3JUN2021 10:09:55   0.3N  126.2E Mw=6.1  EMSC   MOLUCCA SEA                  

P:  2JUN2021 134286     2.0N  125.0E 4.0-5.6 ABBAA  Mindanao, Philippines      

 

O:  4JUN2021 00:28:37   0.4S  135.2E mb=4.7  EMSC   BIAK REGION, INDONESIA       

O:  3JUN2021 11:00:30   1.4S  134.2E ML=4.7  EMSC   NEAR N COAST OF PAPUA, INDONES

P:  5JUN2021 134314     2.0S  134.0E 4.0-5.5 AAAAA  West Irian, PNG            

 

O:  3JUN2021 16:28:17   2.2N  126.8E ML=4.4  EMSC   MOLUCCA SEA                  

P:  2JUN2021 134286     2.0N  125.0E 4.0-5.6 AABAA  Mindanao, Philippines      

 

O:  3JUN2021 15:32:58   3.2S  146.1E mb=4.6  EMSC   BISMARCK SEA                 

P:  5JUN2021 134302     5.0S  146.0E 4.0-5.6 ABAAA  New Ireland                

 

O:  3JUN2021 08:46:40   5.2S  129.8E ML=4.0  EMSC   BANDA SEA                    

P:  8JUN2021 134315     5.0S  130.0E 4.0-5.4 BAAAA  West Irian, PNG            

 

O:  3JUN2021 13:24:31   9.6S  116.3E ML=4.3  EMSC   LOMBOK REGION, INDONESIA     

P:  7JUN2021 134313     8.0S  117.0E 4.0-5.4 BBAAA  Sumbawa Island area        

 

O:  3JUN2021 11:19:28  19.3N  145.5E mb=4.6  EMSC   MAUG ISLANDS REG, N. MARIANA I

P:  9JUN2021 134333    19.0N  145.0E 4.0-5.4 CAAAA  No. Marianas               

 

O:  3JUN2021 09:57:28  10.1N  126.1E mb=4.5  EMSC   PHILIPPINE ISLANDS REGION     

P: 30MAY2021 134036    10.0N  127.0E 3.5-5.1 BAAAA  Luzon, Philippines         

 

CENTRAL AND SOUTH AMERICA

 

O:  3JUN2021 17:17:32  10.0N   70.1W mb=5.1  EMSC   LARA, VENEZUELA              

P:  8JUN2021 134290     9.0N   70.0W 4.0-5.8 BAAAA  Venezuela                  

P:  9JUN2021 134334    10.0N   71.0W 3.5-5.1 CAAAA  Northern Venezuela         

P: 25MAY2021 134046    10.0N   70.0W 3.4-5.3 CAAAA  No. Venezuela              

 

NEIC reported this earthquake of M 5.1 in Lara, Venezuela  was felt with intensity II-III in the area(s) of  Lara, Venezuela in Carora and Los Rastrojos.

 

O: 04JUN2021 03:35:35  15.2S   75.8W ML=4.0  EMSC   NEAR COAST OF CENTRAL PERU

O:  3JUN2021 17:09:32  15.8S   75.4W ML=4.6  EMSC   NEAR COAST OF CENTRAL PERU   

P:  8JUN2021 134512    15.0S   73.0W 4.0-5.4 BABAA  Central Peru               

P: 27MAY2021 134225    15.0S   76.0W 4.0-5.7 CAAAA  Central Peru               

 

O:  4JUN2021 06:48:02   1.0S   81.1W ML=4.2  EMSC   OFF COAST OF ECUADOR         

P:  5JUN2021 134295     1.0S   81.0W 4.0-5.9 AAAAA  Ecuador                    

 

O:  3JUN2021 21:58:50  12.4N   87.6W mb=4.3  EMSC   NEAR COAST OF NICARAGUA      

P:  5JUN2021 134332    12.0N   87.0W 3.5-5.3 AAAAA  Nicaragua                  

 

O:  3JUN2021 19:17:45  14.6N   92.2W ML=4.0  EMSC   CHIAPAS, MEXICO              

P:  5JUN2021 134320    14.0N   93.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

 

O:  3JUN2021 11:16:12  16.2N   94.9W mb=4.3  EMSC   OFFSHORE OAXACA, MEXICO      

P:  5JUN2021 134337    17.0N   96.0W 3.5-5.1 AAAAA  Oaxaca, Mexico             

 

O:  3JUN2021 09:53:10  16.8N  100.2W mb=4.2  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  5JUN2021 134330    17.0N  102.0W 3.5-5.6 AABAA  Michoacan, Mexico          

P:  9JUN2021 134336    16.0N  100.0W 3.5-5.4 CAAAA  Oaxaca, Mexico             

 

O:  3JUN2021 12:12:36  18.0N   67.0W ML=3.4  EMSC   PUERTO RICO REGION           

P:  5JUN2021 134338    18.0N   67.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O:  4JUN2021 00:45:14  18.1N  103.4W ML=4.0  EMSC   OFFSHORE MICHOACAN, MEXICO   

P:  3JUN2021 134330    18.0N  104.0W 3.5-5.4 AAAAA  Michoacan, Mexico          

 

O:  3JUN2021 08:09:55  19.4N  102.2W ML=4.0  EMSC   MICHOACAN, MEXICO            

P:  7JUN2021 134330    19.0N  103.0W 3.5-5.6 BAAAA  Michoacan, Mexico          

 

O:  4JUN2021 02:11:33  25.0S   64.7W mb=4.6  EMSC   SALTA, ARGENTINA             

P:  7JUN2021 134526    23.0S   67.0W 4.0-5.6 BBBAA  Argentina                  

 

O:  3JUN2021 19:34:46  27.3N  111.3W ML=3.2  EMSC   GULF OF CALIFORNIA            

P:  4JUN2021 134348    28.0N  112.0W 3.5-4.9 AAAAA  Gulf of California         

 

O:  3JUN2021 19:26:06  38.0S   75.1W ML=3.9  EMSC   OFF COAST OF ARAUCANIA, CHILE

P: 28MAY2021 134256    38.0S   74.0W 4.0-5.8 BAAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O:  4JUN2021 01:05:26  35.0N   25.1E mb=4.6  EMSC   CRETE, GREECE                

P:  4JUN2021 134383    34.0N   25.0E 3.0-4.8 AAAAA  Crete                      

P:  6JUN2021 134363    35.0N   25.0E 3.0-4.8 AAAAA  Aegean Sea                  

 

NEIC reported this earthquake of M 4.6 in Greece was felt with intensity II-III in the area(s) of Greece at Koutouloufarion, Iraklion (IV) and Arkalohorion, Vasiliai, Kato Gouvai.

 

O:  3JUN2021 15:06:13  38.1N   22.0E Mw=4.5  EMSC   GREECE                        

P:  2JUN2021 134363    38.0N   24.0E 3.0-4.8 AABAA  Aegean Sea                 

 

NEIC reported this earthquake of M 4.8 in Greece was felt with intensity II-III in the area(s) of Greece in Patrai, Ahaia.

 

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

 

SOUTHWEST PACIFIC

 

O:  3JUN2021 14:32:12  18.7S  173.2W mb=4.9  EMSC   TONGA                        

P:  8JUN2021 134521    17.0S  172.0W 4.0-5.5 BBAAA  Tonga Islands              

 

O:  3JUN2021 14:09:50  19.9S  176.1W mb=4.8  EMSC   FIJI REGION                  

P:  8JUN2021 134522    19.0S  178.0W 4.0-5.7 BABAA  Tonga Islands              

 

O:  3JUN2021 14:30:14  21.1S  173.7W mb=4.9  EMSC   TONGA                        

P: 29MAY2021 134251    21.0S  174.0W 4.0-5.4 BAAAA  Tonga Islands              

 

O:  4JUN2021 04:46:45  23.7S  179.8W mb=4.3  EMSC   SOUTH OF FIJI ISLANDS        

P:  3JUN2021 134537    23.0S  180.0W 4.0-5.9 AAAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O:  3JUN2021 10:55:56   3.9N   31.5W mb=5.0  EMSC   CENTRAL MID-ATLANTIC RIDGE   

P:  2JUN2021 134277     3.0N   31.0W 4.0-5.9 AAAAA  Central Mid-Atlantic Ridg  

 

 

ZEALANDIA AND AUSTRALIA REGION

 

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

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

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

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 03JUN2021 20:56:47  31.9N  114.8W ML=3.7  EMSC   SONORA, MEXICO

O:  3JUN2021 18:26:52  31.5N  115.7W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO      

P:  3JUN2021 134403    32.0N  117.4W 2.5-4.4 AABAA  So. California             

 

O:  3JUN2021 15:52:48  34.0N  117.1W Ml=2.1  EMSC   GREATER LOS ANGELES AREA, CALI

P:  7JUN2021 134404    33.7N  117.5W 2.5-4.8 BAAAA  So. California             

 

O: 03JUN2021 13:58:28  37.4N  121.7W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O:  3JUN2021 12:15:32  37.4N  121.7W ML=3.4  EMSC   NORTHERN CALIFORNIA          

P:  3JUN2021 134376    37.8N  122.6W 2.5-4.4 AAAAA  Central California         

P:  8JUN2021 134376    37.3N  121.6W 2.5-4.4 BAAAA  Central California         

 

O:  3JUN2021 13:32:46  38.2N  117.9W ml=2.7  EMSC   NEVADA                       

O: 03JUN2021 19:01:18  38.2N  117.8W ml=2.1  EMSC   NEVADA

P:  6JUN2021 134370    37.9N  118.2W 2.5-4.5 BAAAA  California/Nevada area     

 

O:  3JUN2021 07:11:06  38.8N  122.8W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P:  3JUN2021 134377    38.9N  122.8W 2.5-4.5 AAAAA  Central California         

 

O:  3JUN2021 12:52:46  39.4N  123.1W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P:  7JUN2021 134378    39.6N  123.4W 2.5-4.7 BAAAA  Central California         

 

O:  3JUN2021 19:34:02  41.0N  123.8W Md=2.8  EMSC   NORTHERN CALIFORNIA          

P:  4JUN2021 134456    40.6N  124.9W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O:  3JUN2021 11:34:38  51.4N  173.4W ML=3.3  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P:  4JUN2021 134475    52.3N  171.3W 3.5-4.9 AABAA  Andreanoff Isls, Aleutians 

 

O:  3JUN2021 14:44:18  59.2N  153.0W ML=3.4  EMSC   SOUTHERN ALASKA              

O:  3JUN2021 09:32:23  60.2N  153.0W ML=3.1  EMSC   SOUTHERN ALASKA              

P:  3JUN2021 134493    60.5N  151.5W 3.2-5.1 AAAAA  Central Alaska             

 

O:  3JUN2021 18:11:14  62.4N  148.3W ML=4.0  EMSC   CENTRAL ALASKA               

P:  4JUN2021 134497    62.7N  148.1W 3.2-5.0 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

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

 

ROCKY MOUNTAINS REGION

 

O: 03JUN2021 13:02:08  31.7N  104.4W mb=2.3  EMSC   WESTERN TEXAS

O:  3JUN2021 09:14:37  31.1N  103.3W ML=3.0  EMSC   WESTERN TEXAS                

P:  5JUN2021 134400    31.6N  103.6W 2.0-4.1 AAAAA  SW U.S.A                   

P:  7JUN2021 134400    32.5N  104.6W 2.0-4.0 BAAAA  SW U.S.A                   

 

O:  3JUN2021 21:59:24  43.5N  109.6W Ml=2.3  EMSC   WYOMING                      

P:  4JUN2021 134433    41.9N  108.7W 2.0-3.9 ABAAA  Colorado area              

 

O:  3JUN2021 20:51:55  44.5N  115.2W Ml=3.1  EMSC   SOUTHERN IDAHO               

P:  4JUN2021 134446    44.6N  115.0W 2.0-4.0 AAAAA  Montana/Idaho              

 

NEIC reported this earthquake of M 3.1 in Southern Idaho was felt with intensity II-III in the area(s) of Southern Idaho at Meridian.

 

EASTERN U.S./CANADA

 

 

O:  3JUN2021 12:23:30  35.0N   97.7W ML=3.6  EMSC   OKLAHOMA                     

O:  3JUN2021 12:23:30  35.0N   97.7W ML=3.3  ANSS   OKLAHOMA                     

P:  3JUN2021 134420    36.0N   97.0W 2.0-4.3 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.3-3.6 in Oklahoma was felt with intensity II-III in the area(s) of Oklahoma in Alex (V), Purcell (IV), Blanchard, Amber, Washington, Norman, Lawton, Tulsa.

 

O:  3JUN2021 14:49:02  35.1N   95.3W ML=2.1  EMSC   OKLAHOMA                     

P:  4JUN2021 134419    35.0N   96.0W 2.0-4.4 AAAAA  Southern Plains            

 

HAWAII

 

O:  3JUN2021 15:54:15  18.9N  155.2W ML=3.2  EMSC   HAWAII REGION, HAWAII        

P:  5JUN2021 134325    18.8N  155.2W 3.0-4.4 AAAAA  Hawaii