UNPRECEDENTED M 6.7 IN MAURITIUS-REUNION AREA TRIGGERED BY ANTIPODAL EFFECTS

 

EARTHQUAKE SUMMARY FOR  MAY 12, 2021

 

The strongest earthquake in the world today was an M 6.7 in the Mauritius-Reunion area in the South Indian Ocean. NEIC reported it was as far as 1000 km from the epicenter in Mauritius at Laimatie Flaco, Bois des Amourettes, Grand Port, Curepipe Plaines Wilheim, Quatre Bornes Paines Wilheim and in Antananarivo, Madagascar and at Male, Maldives. The last earthquake in the world of larger magnitude was an M 7.0 on March 20, 2021 off the coast of eastern Honshu. A smaller event off Honshu of M 6.7-6.8 occurred more recently on May 1, 2021. The only earthquake ever recorded of M>=6.7 within about 300 km of this epicenter was an M 6.6 on July 26, 2012. Today's earthquake is at the exact antipode of the eye of Tropical Storm Andres which is south of western Mexico at this time. The possibility of such an event at this time had been suggested in this summary in the previous summary as:

 

"Tropical storm Andres continued in the area south of Jalisco, Mexico with winds up to 85 kts.  The M 5.1 in Michoacan today was probably promoted by stresses from this storm. The antipode of this storm is at 17S 67E in the South Indian Ridge. A moderate to strong earthquake in this area is possible at this time. This longitude is also near the maximum tidal stress with the current new moon as noted in previous issues of this summary:

 

"The new moon will arrive on May 11, 2021 at 19:00 UT. Longitudes which are at local solar noon at this hour are near 105 West and those at local solar midnight near 75 East longitude. In the west these include areas of central and Western U.S. and Canada and western Mexico as well as portions of the East Pacific Rise. In the east area near 75E include Afghanistan, India, Hindu Kush, Iran and eastern Indonesia and portions of the mid-Indian ridges. These regions are expected to see enhanced seismicity during the coming week. Other tidally promoted seismicity may occur elsewhere and is most likely near local solar midnight and noon when tidal stresses are generally maximized." (May 9-12, 2021)

 

A third factor which probably enhanced global seismicity today was a strong geomagnetic storm which began about the time of M 6.7 in the Mauritius-Reunion area (about 14:00 UT). Most of the strong activity today occurred near the geomagnetic equator or at high latitude as expected with strong geomagnetic triggering. As described in this summary, this storm is the strongest recorded since September 1, 2019:

 

"The geomagnetic field saw stormy conditions today. The AP level was 41.  High latitude geomagnetic field also saw strong storm conditions with AP 47. Strong, sudden commencement storms such as this can enhance seismicity especially near the geomagnetic equator or near the polar auroral regions. This is the strongest geomagnetic storm since AP reached 45 on September 1, 2019 more than 1.5 years ago.." (May 12-13, 2021)

 

An M 6.7 in Fiji accompanied the strong geomagnetic storm on September 1, 2019. Moderately strong earthquakes in Panama, Peru and Halmahera today followed with this storm and lie near the geomagnetic equator. They were probably promoted by geomagnetic effects associated with today's storm.

 

The M 6.6-6.7 on July 26, 2012 was also apparently triggered by a similar storm south of Mexico as noted in this summary at the time as:

 

"A strong M 6.7 earthquake occurred today off the Indian Ocean islands of Mauritius, The epicenter was about 400 km north of the island of Rodrigues. There were no immediate reports of damage or injury. No tsunami warning was issued. Mauritius is a popular tourist area and a tsunami would do major damage. This earthquake is located on the mid-Indian ridge near the volcanic centers at Reunion and could be associated with a volcanic epicenter. Earthquakes on mid-Ocean ridges, no matter how large, seldom produce appreciable tsunamis.  This epicenter is antipodal to the region of western Mexico where Socorro and Revilla Gigedo Islands are located. A series of hurricanes has been passing over this area in the past two weeks. Microseismics from these could have helped promote the antipodal activity in the Indian Ocean as we suggested at the time. It is also possible that the earthquake near Mauritius will trigger renewed activity in the region of western Mexico near its antipode. We discussed this possibility in our summary of July 8 where we stated in this regard on the occurrence of the M 5.0 foreshock to today's earthquake in Mauritius:

 

"A moderate earthquake hit the region of Mauritius and Reunion in the South Indian Ocean today with M 5.0. This is at the antipode of the current location of Hurricane Daniel which is a major hurricane south of Mexico. Microseisms from this hurricane will focus at this location in the south Indian Ocean and could help promote seismicity in the area. This has been seen in the case of major hurricanes on a number of occasions in the past and appears to be another way to promote regional seismicity. A more detailed study of this is probably called for." (July 8, 2012)  - note since that time three other hurricanes have taken the same path, an unprecedented series in this region.

 

This event is the strongest in this region of the South Indian Ocean ever recorded. The last of M>=6 was an M 6.3 on August 16, 2010 and the last of M>=6.5 was an M 6.5 on September 17, 1995 and November 5, 1991. These last two were the largest previously recorded in the area." (July 26, 2012)

 

Forecast 133641 had expected this event within about 300 km was likely in the South Indian Ocean around May 9.

 

O: 12MAY2021 14:05:16  17.3S   66.5E Mw=6.7  EMSC   MAURITIUS - REUNION REGION   

P:  9MAY2021 133641    14.0S   66.0E 4.0-5.4 BCAAA  So. Indian Ocean           

 

 

A strong earthquake of M 5.9 also occurred near El Salvador today. NEIC reported

this event was felt with maximum intensity V in San Salvador at La Libertad; IV in Antiguo Cuscatlan, El Salvador and II-III in Armenia, Nueva San Salvador, Nuevo Cuscatlan, Opico, San Marcos, San Salvador and Ilopango and in Guatemala at Masagua Escuintla. This event followed a smaller M 5.7 foreshock reported in the previous summary as:

 

 

"A moderately strong earthquake occurred near El Salvador today with M 5.6. NEIC reported it was felt with maximum intensity VIII in El Salvador at Acajuatla; IV in Nuevo Cuscatlan, Antiguo Cuscatlan, and II-III in Opico, and in Guatemala at Masagua, Mixco, Guatemala City, Antigua Guatemala, Santa Catarina Pinula. This earthquake occurred within minutes of local solar midnight and was probably promoted by high tidal stresses which maximize near this hour. It is also near the maximum tidal longitude for the current new moon. It also occurred near the origination point of Tropical Storm Andres which is now south of Jalisco, Mexico and may have helped trigger the M 5.1 in Michoacan yesterday as well as the activity in El Salvador today." (May 12, 2021)

 

 

Forecasts 133447 and 133760 had expected this activity was likely between May 5 and 13 within about 100 km of this epicenter. No major damage was reported with this earthquake and no tsunami was expected nor observed. This epicenter is at 103 degrees from the M 7.7 in the Loyalty Islands of February 10, 2021 and was probably promoted by energy from that source. Today's event of M 5.9 is the strongest within about 200 km of this epicenter since an M 5.9 on December 19, 2019 and an M 5.9 on July 31, 2019. A strong M 6.6 hit the area about 100 km to the east on May 30, 2019.  Forecasts 133760 and 133758 had expected today's event within about 100 km was likely around May 13-14.

 

O: 12MAY2021 08:45:48  13.3N   90.2W Mw=5.9  EMSC   OFFSHORE EL SALVADOR         

P: 13MAY2021 133760    13.0N   91.0W 3.5-5.6 AAAAA  Guatemala                  

P: 14MAY2021 133758    13.0N   89.0W 3.5-5.2 AAAAA  Coast of Central America   

 

An M 6.0 also occurred south of Panama and west of Colombia today. NEIC reported this earthquake was felt with intensity II-III in Panama in Chiriqui at Los Lomas and Boquete and in Santa Fe, Veraguas, Panama. When an M 5.7 near the antipode of this epicenter occurred on May 5, 2021 this summary noted this relation could bring about a strong earthquake at this time in the area of Colombia or Ecuador at this time as:

 

"The antipode of this epicenter is in southern Colombia and Ecuador at 2N 80W - an area which is currently active and could see triggered antipodal seismicity with strong events in this area of Indonesia." (May 5, 2021)

 

This is the strongest earthquake within about 200 km of this epicenter since

an M 6.2 about 200 km to the north on June 26, 2019 and an M 6.6 about 150 km to the south on  January 7, 2015. Forecast 133721 had expected seismic enhancement in this region was likely around May 11.

 

O: 13MAY2021 09:42:10   6.7N   82.4W Mw=6.0  EMSC   SOUTH OF PANAMA               

P: 11MAY2021 133721     8.0N   83.0W 3.5-5.4 ABAAA  Costa Rica                 

 

 

An earthquake of M 5.5-5.6 shook the area of Central Peru today. NEIC reported it was felt with intensity V in Ica, Peru at Ica and Santiago; IV in Arequipa and II-III in the Lima area at Nuevo Imperial, Mala, San Luis, Santa Maria and Lima. This epicenter is located on the geomagnetic equator and was probably promoted by today's geomagnetic storm. The last earthquake within about 200 km of this epicenter with M>=5.6 occurred on October 28, 2020 with M 5.6 and prior to that on May 8, 2019. A strong M 7.1 hit about 150 km southeast of this on January 14, 2018. Forecast 133932 had expected today's event was likely within about 100 km around May 17. This earthquake occurred within about an hour of local solar noon, a time when tidal and geomagnetic stresses are maximized.

 

O: 12MAY2021 15:56:57  14.1S   75.6W mb=5.6  EMSC   NEAR COAST OF CENTRAL PERU   

P: 17MAY2021 133932    15.0S   76.0W 4.0-5.7 BAAAA  Central Peru                

 

The M 5.6 followed an M 5.3 which occurred earlier in the day in southern

Peru. NEIC reported this earthquake was felt with maximum intensity VII in Tarata, Tacna, Peru and in La Paz, Bolivia. Forecast 133937 had expected today's event was likely within about 200 km around May 15.

 

O: 12MAY2021 07:53:23  17.2S   70.0W mb=5.3  EMSC   SOUTHERN PERU                

P: 15MAY2021 133937    17.0S   72.0W 4.0-5.5 BABAA  So. Peru/Bolivia           

 

An earthquake of M 5.5 also occurred today north of Halmahera, Indonesia. It was felt lightly in the epicentral region. It was preceded by an M 5.3 about three hours earlier. This event occurred within about 15 minutes of local solar midnight, a time when tidal and geomagnetic stresses are maximized and was probably promoted by them. Forecast 133406 had expected this event within about 100 km was likely around May 10.

 

 

O: 12MAY2021 15:45:31   4.0N  128.7E mb=5.3  EMSC   NORTH OF HALMAHERA, INDONESIA

O: 12MAY2021 18:20:28   4.0N  128.7E Mw=5.5  EMSC   NORTH OF HALMAHERA, INDONESIA

P: 10MAY2021 133406     4.0N  128.0E 4.0-5.4 AAAAA  Halmahera                  

 

The strongest earthquake in the U.S. or Canada today was an M 5.1 in the Rat Islands, Aleutians. It followed an M 4.8 foreshock but neither of these events were reported felt in this remote area. These occurred near local solar midnight and noon about 12 hour apart. The M 5.1 is the strongest in the Rat Islands

since an M 5.3 on February 4, 2020 and April 14, 2019. It was probably promoted by the major geomagnetic storm today.  Forecast 133906 had expected today's events within about 100 km of these epicenters were likely mid-May.

 

O: 12MAY2021 22:00:34  51.8N  176.3E mb=5.1  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

O: 12MAY2021 09:32:35  51.3N  176.7E mb=4.8  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 17MAY2021 133906    52.0N  175.0E 4.0-5.6 BAAAA  Rat Islands                

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 13MAY2021 03:42:38  24.4N   99.2E mb=4.6  EMSC   YUNNAN, CHINA                

P: 17MAY2021 133788    25.0N   97.0E 4.0-5.4 BABAA  Myanmar                    

 

O: 12MAY2021 16:26:16  29.8N   50.8E mb=4.6  EMSC   SOUTHERN IRAN                

P: 13MAY2021 133793    28.0N   52.0E 3.5-5.0 ABAAA  So. Iran/Persian Gulf      

P: 18MAY2021 133844    30.0N   52.0E 3.8-5.2 CAAAA  So. Iran                   

 

O: 13MAY2021 08:37:34  40.6N   75.9E mb=4.4  EMSC   KYRGYZSTAN                   

P: 16MAY2021 133867    40.0N   75.0E 4.0-5.4 BAAAA  Kirgizstan/Xinjiang        

 

O: 12MAY2021 09:40:53  53.7N  160.6E mb=4.1  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 12MAY2021 133898    52.0N  160.0E 4.0-5.4 ABAAA  E. of Kamchatka            

P: 15MAY2021 133898    53.0N  161.0E 4.0-5.6 BAAAA  E. of Kamchatka            

 

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

 

INDONESIA AND PHILIPPINES

 

O: 12MAY2021 07:53:44   0.2N  124.9E ML=4.5  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 12MAY2021 133724     1.0N  125.0E 4.0-5.4 AAAAA  Mindanao, Philippines      

 

O: 13MAY2021 02:08:13   0.3S  122.9E ML=4.0  EMSC   SULAWESI, INDONESIA          

P: 13MAY2021 133747     1.0S  122.0E 4.0-5.6 AAAAA  Sulawesi area              

 

O: 13MAY2021 02:50:27   0.9N   99.1E ML=4.1  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 14MAY2021 133726     0.0N   98.0E 4.0-5.6 AAAAA  So. Sumatera               

 

O: 12MAY2021 15:45:31   4.0N  128.7E mb=5.3  EMSC   NORTH OF HALMAHERA, INDONESIA

O: 12MAY2021 18:20:28   4.0N  128.7E Mw=5.5  EMSC   NORTH OF HALMAHERA, INDONESIA

P: 10MAY2021 133406     4.0N  128.0E 4.0-5.4 AAAAA  Halmahera                  

 

O: 13MAY2021 05:06:59   5.6N  126.4E ML=4.1  EMSC   MINDANAO, PHILIPPINES        

P: 14MAY2021 133725     6.0N  126.0E 4.0-5.8 AAAAA  Mindanao, Philippines      

 

O: 12MAY2021 11:15:12  15.9N  121.1E mb=4.6  EMSC   LUZON, PHILIPPINES           

P: 17MAY2021 133766    16.0N  120.0E 3.5-4.9 BAAAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 4.6 in Luzon, Philippines was felt with intensity II-III in the area(s) of Luzon, Philippines in Central Luzon, Ilocos and Pasil Cordillera.

 

 

CENTRAL AND SOUTH AMERICA

 

O: 13MAY2021 09:42:10   6.7N   82.4W Mw=6.0  EMSC   SOUTH OF PANAMA              

P: 11MAY2021 133721     8.0N   83.0W 3.5-5.4 ABAAA  Costa Rica                 

 

O: 12MAY2021 21:17:04  13.3N   90.4W ML=4.1  EMSC   OFFSHORE GUATEMALA

O: 12MAY2021 21:27:27  13.3N   90.4W ML=4.1  EMSC   OFFSHORE GUATEMALA

O: 12MAY2021 08:45:48  13.3N   90.2W Mw=5.9  EMSC   OFFSHORE EL SALVADOR         

P: 13MAY2021 133760    13.0N   91.0W 3.5-5.6 AAAAA  Guatemala                  

P: 14MAY2021 133758    13.0N   89.0W 3.5-5.2 AAAAA  Coast of Central America   

 

O: 12MAY2021 15:56:57  14.1S   75.6W mb=5.6  EMSC   NEAR COAST OF CENTRAL PERU   

P: 17MAY2021 133932    15.0S   76.0W 4.0-5.7 BAAAA  Central Peru               

 

O: 12MAY2021 07:53:23  17.2S   70.0W mb=5.3  EMSC   SOUTHERN PERU                 

P: 15MAY2021 133937    17.0S   72.0W 4.0-5.5 BABAA  So. Peru/Bolivia           

 

O: 12MAY2021 20:28:43  17.9N   67.0W Md=3.0  EMSC   PUERTO RICO REGION

O: 13MAY2021 06:24:44  18.6N   67.5W ML=3.0  EMSC   PUERTO RICO REGION

O: 12MAY2021 20:23:00  17.9N   67.0W ML=3.9  EMSC   PUERTO RICO REGION           

P: 11MAY2021 133774    18.0N   68.0W 3.4-5.3 AAAAA  Puerto Rico                

 

NEIC reported this earthquake of M 3.8-3.9 in Puerto Rico was felt with intensity II-III in the area(s) of  Puerto Rico at Lajas, Sabana Grande, Cabo Rojo, Mayaguez, Lares and Ponce and IV in San German, Guayanilla and Las Marias.

 

O: 12MAY2021 16:53:33  19.4N   69.4W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 14MAY2021 133774    18.0N   69.0W 3.4-5.3 ABAAA  Puerto Rico                

 

AFRICA AND EUROPE

 

O: 12MAY2021 14:42:22  51.6N   16.2E ML=3.9  EMSC   POLAND                       

P:  7MAY2021 133607    51.0N   16.0E 3.0-4.4 BAAAA  Poland                     

 

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

 

SOUTHWEST PACIFIC

 

O: 12MAY2021 16:52:43  17.9S  168.6E Mw=5.0  EMSC   VANUATU                      

P: 14MAY2021 133944    17.0S  167.0E 4.0-5.6 AAAAA  Vanuatu Islands            

 

O: 12MAY2021 20:28:37  24.6S  178.9E mb=4.3  EMSC   SOUTH OF FIJI ISLANDS        

P:  3MAY2021 133677    25.0S  179.0E 4.0-5.4 CAAAA  Tonga/Fiji                 

 

OCEAN RIDGES

 

O: 12MAY2021 14:05:16  17.3S   66.5E Mw=6.7  EMSC   MAURITIUS - REUNION REGION   

P:  9MAY2021 133641    14.0S   66.0E 4.0-5.4 BCAAA  So. Indian Ocean           

 

O: 12MAY2021 19:28:06  63.2S   58.2W mb=4.6  EMSC   ANTARCTIC PENINSULA          

P: 14MAY2021 133977    61.0S   58.0W 4.0-5.6 ACAAA  Southern  Ocean            

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 12MAY2021 11:48:50  37.5S  180.0E ML=3.6  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 14MAY2021 133961    38.0S  178.0E 3.0-4.7 AABAA  North Island, N.Z.         

 

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

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

O: 13MAY2021 01:26:30  37.6N  141.5E ML=3.9  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 14MAY2021 133833    37.0N  141.0E 4.0-5.5 AAAAA  Off East Coast Honshu      

 

O: 12MAY2021 23:44:32  49.0N  154.2E Mw=5.3  EMSC   KURIL ISLANDS                

P: 13MAY2021 133873    48.0N  155.0E 3.5-5.5 AAAAA  NE Pacific                 

P: 13MAY2021 133885    49.0N  152.0E 3.5-5.7 AACAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 13MAY2021 04:03:33  32.8N  115.7W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 13MAY2021 01:16:46  32.7N  115.8W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 13MAY2021 133837    32.9N  115.6W 2.5-4.4 AAAAA  So. California             

 

O: 12MAY2021 08:07:27  34.6N  118.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 13MAY2021 133840    33.9N  118.3W 2.5-5.0 AAAAA  So. California             

P: 16MAY2021 133840    34.3N  118.5W 2.5-5.0 BAAAA  So. California             

 

O: 12MAY2021 10:14:25  35.5N  118.4W ML=2.6  EMSC   CENTRAL CALIFORNIA           

O: 12MAY2021 10:14:25  35.5N  118.4W ML=3.0  ANSS   CENTRAL CALIFORNIA           

P: 12MAY2021 133842    35.6N  118.4W 2.5-5.2 AAAAA  So. 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 Bodfish, Lake Isabella, Caliente, Santa Clarita, Fellows, Los Banos and Gustine.

 

O: 12MAY2021 22:20:40  36.0N  117.7W Ml=2.4  EMSC   CENTRAL CALIFORNIA           

O: 12MAY2021 15:52:55  36.1N  118.1W ML=2.1  EMSC   CENTRAL CALIFORNIA

P: 14MAY2021 133843    35.8N  117.7W 2.5-5.2 AAAAA  So. California             

 

O: 12MAY2021 11:41:39  36.7N  121.4W Md=2.1  EMSC   CENTRAL CALIFORNIA           

O: 12MAY2021 14:34:50  37.2N  121.8W Md=2.8  EMSC   NORTHERN CALIFORNIA          

P: 14MAY2021 133809    37.1N  121.5W 2.5-4.6 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.8 in San Jose, California was felt with intensity II-III in the area(s) of San Jose, California at San Jose, Santa Clara, Aptos, Sunnyvale and Mountain View.

 

O: 13MAY2021 00:27:26  37.9N  118.6W Md=2.1  EMSC   CENTRAL CALIFORNIA            

P: 12MAY2021 133804    37.9N  118.2W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 12MAY2021 07:53:08  39.9N  123.5W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 14MAY2021 133877    40.6N  122.4W 2.5-4.5 AAAAA  Northern California        

 

O: 12MAY2021 18:32:19  40.5N  124.3W Md=2.1  EMSC   NORTHERN CALIFORNIA

O: 12MAY2021 07:11:39  40.4N  124.4W ML=2.4  EMSC   OFFSHORE NORTHERN CALIFORNIA 

O: 12MAY2021 07:11:39  40.4N  124.4W ML=2.7  ANSS   OFFSHORE NORTHERN CALIFORNIA 

P: 12MAY2021 133878    40.7N  124.6W 2.5-4.6 AAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 2.7 off Northern California  was felt with intensity II-III in the area(s) of Northern California at Ferndale.

 

O: 12MAY2021 17:44:45  40.9N  122.4W Ml=2.7  EMSC   NORTHERN CALIFORNIA          

P: 14MAY2021 133877    40.6N  122.4W 2.5-4.5 AAAAA  Northern California        

 

NEIC reported this earthquake of M 2.7 in Northern California was felt with intensity II-III in the area(s) of Northern California in Lakehead, Shasta Lake, Redding and Concord.

 

ALASKA

 

O: 12MAY2021 22:00:34  51.8N  176.3E mb=5.1  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

O: 12MAY2021 09:32:35  51.3N  176.7E mb=4.8  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 17MAY2021 133906    52.0N  175.0E 4.0-5.6 BAAAA  Rat Islands                

 

O: 12MAY2021 15:10:23  52.0N  179.6E mb=3.8  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  8MAY2021 133609    51.0N  178.0E 4.0-5.8 BAAAA  Rat Islands                

 

O: 12MAY2021 09:34:09  53.5N  162.8W ML=3.5  EMSC   SOUTH OF ALASKA              

P: 15MAY2021 133910    52.5N  163.7W 3.5-5.2 BAAAA  Unimak Islands, Aleutians  

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 13MAY2021 04:39:32  44.0N  128.4W ML=3.2  EMSC   OFF COAST OF OREGON          

P: 14MAY2021 133879    44.1N  128.8W 3.0-4.9 AAAAA  Off Coast of Oregon        

 

ROCKY MOUNTAINS REGION

 

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

 

EASTERN U.S./CANADA

 

O: 12MAY2021 22:27:19  34.5N   97.3W ML=2.2  EMSC   OKLAHOMA                      

P: 13MAY2021 133847    34.0N   96.0W 2.0-4.2 AAAAA  Southern Plains            

 

O: 13MAY2021 03:01:12  35.2N   95.4W ML=2.6  EMSC   OKLAHOMA

O: 13MAY2021 03:22:51  35.1N   95.4W ML=2.1  EMSC   OKLAHOMA                     

P: 12MAY2021 133847    35.0N   96.0W 2.0-4.2 AAAAA  Southern Plains            

 

O: 12MAY2021 15:40:23  36.6N   89.6W mb=3.3  EMSC   SOUTHEASTERN MISSOURI        

P: 14MAY2021 133826    36.0N   89.0W 2.0-4.3 AAAAA  New Madrid area            

P: 18MAY2021 133826    36.7N   89.7W 2.0-4.1 CAAAA  New Madrid area            

 

NEIC reported this earthquake of M 3.0-3.3 in Southeastern Missouri was felt with intensity II-III in the area(s) of Southeastern Missouri in Lilbourn (IV), Portageville, Carron, Matthews, Rolla. 

 

HAWAII

 

O: 13MAY2021 05:43:23  19.2N  155.5W ML=3.4  EMSC   ISLAND OF HAWAII, HAWAII     

P: 17MAY2021 133762    19.4N  155.2W 3.0-4.7 BAAAA  Hawaii