STRONG SERIES IN GULF OF ADEN AND ETHIOPIA WITH SOLAR FLARES

 

EARTHQUAKE SUMMARY FOR JUNE 3, 2023

 

 

The strongest earthquake in the world today was an M 5.9 north of Somalia in the Gulf of Aden. NEIC did not note any felt reports with this earthquake. It was accompanied by a series of smaller aftershocks as well as regional shocks in Ethiopia and the Gulf of Aden. In the previous issue of this summary the foreshocks to this event had been noted as:

 

 

"A strong series of earthquakes also continued today in the Gulf of Aden east of

Sudan and Ethiopia. An earthquake of M 5.7 hit this area on May 19, 2023 and this may be aftershocks of that event. Forecast 153672 had expected today's activity was likely in this area around  June 2." (June 3, 2023)

 

Earthquakes in the Gulf of Aden, Eritrea and Ethiopia are closely related to

solar flare activity as they occur on the geomagnetic equator. For example, when an M 5.5 occurred in this area on December 26, 2022 this summary noted in this regard:

 

 

"An earthquake of M 5.5 also hit the region of Ethiopia today. It was not immediately reported felt in this remote area.  This earthquake may also have been promoted by several moderate solar flares which occurred at or near the time of today's activity. This possibility had been previously noted and expected at this time in past summaries. For example on October 31, 2022  this summary pointed at this possibility as:

 

"Times of high solar and geomagnetic activity often coincide with renewed seismicity in the region of Ethiopia. Strong flares appear to trigger enhanced seismicity in this area, in particular. So an M 4.4 in the Eritrea and Ethiopia region today is not surprising as it lies on the geomagnetic equator at a time of strong geomagnetic activity. This is the strongest earthquake in Ethiopia within about 200 km of this epicenter since an M 4.6 on June 5, 2022. At the time this summary noted:

 

"This has been an active area especially during periods of active solar and geomagnetic periods, often showing synchronicity with major solar flares. During the current solar quiet period, however the area has seen little moderate seismicity. The last earthquakes of M>=4.6 within about 300 km of this epicenter occurred September 11, 2019 and August 13, 2018. The last event of M>5 in this area was an M 5.6 on July 8, 2013." (June 5, 2022, October 31, 2022, December 26, 2022)

 

The mainshock today occurred at the maximum of flare 9370 while the  strongest aftershock (M 5.5) occurred at the beginning of flare 9470. More details are available in the Solar Flare lists below. Note that another event in Southern Peru today of M 4.7, also on the geomagnetic equator was synchronous with flare 9370.

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

 

9370       0709   0716      0723   C2.0      (June 3, 2023)   1.5E-03  

Gulf of Aden M 5.8 07:17 UT

Gulf of Aden M 4.7 07:05  UT

Southern Peru M 4.7 07:17 UT

 

9470       1401   1409      1414   C2.2      (June 3, 2023)   1.6E-03  

Gulf of Aden M 5.5 13:58  UT

Gulf of Aden M 4.8 14:10  UT

 

Forecast 153672 had expected enhanced seismicity in the Gulf of Aden was likely around June 2 and forecast 153670 had expected the event in  Ethiopia around June 2.

 

O: 03JUN2023 07:04:26  12.5N   48.2E mb=4.7  EMSC   GULF OF ADEN

O: 03JUN2023 07:04:26  12.5N   48.2E mb=4.7  EMSC   GULF OF ADEN

O: 03JUN2023 10:32:07  12.5N   48.1E mb=4.8  EMSC   GULF OF ADEN

O: 03JUN2023 10:53:53  12.5N   48.1E mb=4.4  EMSC   GULF OF ADEN

O: 03JUN2023 14:10:36  12.5N   48.1E mb=4.8  EMSC   GULF OF ADEN

O: 03JUN2023 07:17:48  12.6N   47.9E Mw=5.8  EMSC   GULF OF ADEN

O: 03JUN2023 08:56:04  12.6N   47.9E mb=4.5  EMSC   GULF OF ADEN

O: 03JUN2023 10:45:33  12.7N   48.0E mb=4.5  EMSC   GULF OF ADEN

O: 03JUN2023 13:58:06  12.7N   48.0E Mw=5.5  EMSC   GULF OF ADEN

O: 03JUN2023 09:43:38  13.0N   47.8E mb=4.6  EMSC   GULF OF ADEN

O:  3JUN2023 10:15:55  12.4N   48.0E mb=4.8  EMSC   GULF OF ADEN                 

P:  2JUN2023 153672    13.0N   51.0E 3.5-5.1 AACAA  Gulf of Aden               

 

O:  4JUN2023 04:14:48  14.5N   40.0E mb=4.7  EMSC   ERITREA-ETHIOPIA BORDER REGION

P:  2JUN2023 153670    12.0N   40.0E 3.5-5.0 ACAAA  Ethiopia                   

 

 

The strongest earthquake in the U.S. or Canada today was an M 4.5 in the Geysers region of Northern California. NEIC reported it was felt with maximum intensity IV in Kelseyville and Middletown with intensity II-III in Geyserville, Healdsburg, Hidden Valley Lake, Cloverdale, Lower Lake, Calistoga, Windsor and as far to the south as San Francisco, California. This is an area where fluid flow often controls seismicity. Strong tidal stresses can be an effective means to move fluids. So it is not surprising that this earthquake occurred in conjunction with today's full moon as noted in this and previous issues of this summary:

 

"The full moon will arrive on June 4, 2023 at 03:42 UT. Longitudes at local solar noon are near 126 East and those at local solar midnight are near 55 West longitude. In the west these include the northern and Eastern Caribbean as well as areas of western South America while in the East longitudes near 126 E are located in the Philippines, Taiwan, Japan, and Indonesia among others. These are the most likely areas to see tidal triggering at this time, but other areas could see significant enhancement in seismicity in the next several days. These would most likely see seismic enhancement near local solar noon or midnight. A strong to major earthquake is considered likely with this new moon before May 25, 2023." (June 2-4, 2023)

 

Today's earthquake is the strongest event in the Geysers area since an M 5.0 on December 14, 2016. That earthquake was likely the strongest recorded in the Geysers region of California as reported at the time in  this summary:

 

"While smaller earthquakes in the Geysers, California are nearly continuous, events of larger magnitude are uncommon. Today's earthquake may be the largest ever recorded in the Geysers area, in fact. An M 5.0 was recorded on May 7, 1955 but magnitudes were not well determined at the time. No other events in the Geysers area have reached M>=5.0 until today." (December 14, 2016) 

 

Like today's event this earthquake in 2016 occurred with the full moon of December 14, 2016 and was probably promoted by tidal stresses.

 

A similar M 4.4 hit in the Geysers area of Northern California on April 12, 2023. At the time this summary noted in this regard:

 

"While current seismic conditions remain at very quiet levels, mid-April often sees a rash of increased seismicity. One area where a combination of tidal and geomagnetic/solar effects may produce significant events at this time of year is Central California. The peak of seismicity in this region generally occurs in  mid-April and can include moderate to large earthquakes such as the M 8.0 in San Francisco of April 18, 1906. This is a good time to check your emergency kit and rations for the possibility of a significant regional event as the sun becomes active again after a period of quiet over the past several weeks. A further triggering factor may be the solar eclipse of April 20. Tidal effects during solar eclipses have been known to trigger significant seismicity - especially when combined with strong X-class solar flares." (April 9, 2023)

 

Forecast 153717 had expected today's event was likely within about 10 km of this epicenter around June 5. 

 

 

O: 03JUN2023 12:02:39  38.8N  122.8W Md=2.9  EMSC   NORTHERN CALIFORNIA

O: 03JUN2023 12:07:20  38.8N  122.8W Md=2.5  EMSC   NORTHERN CALIFORNIA

O: 03JUN2023 12:10:25  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA

O:  3JUN2023 12:01:19  38.8N  122.8W Mw=4.4  EMSC   NORTHERN CALIFORNIA          

P:  5JUN2023 153717    38.9N  122.8W 2.5-4.6 AAAAA  Central California         

 

The strongest seismicity in the U.S. or Canada today was a series including events of M 4.9, 4.9 and 4.7 in the Unimak Island region of the Alaskan Aleutians. These events were not reported felt in this remote area. A foreshock of M 4.6 and 3.8 hit the Unimak Island area on May 5, 2023. At the time this summary noted:

 

 

"The strongest earthquake in the U.S. or Canada today was an M 4.6 in Unimak Island area, Alaska. It was not reported felt in this remote area. The last earthquake in the Unimak Island area of Alaska with M>=4.6 occurred on January 21, 2023 with M 4.6, part of a series that stated on January 19 with an M 4.8." (May 5, 2023)

 

The last earthquake of larger magnitude than M 4.9 in the Unimak area was an M 5.1 on September 9, 2021. Events of M4.9-5.0 also occurred in the area on November 4, 2020 and January 11, 2021. Forecast 153828 had expected this activity was likely in the Unimak Island area around May 31.

 

O: 03JUN2023 15:24:56  53.5N  163.2W mb=4.9  EMSC   UNIMAK ISLAND REGION, ALASKA

O: 03JUN2023 15:37:21  53.5N  163.2W ml=3.6  EMSC   UNIMAK ISLAND REGION, ALASKA

O: 03JUN2023 22:49:24  53.6N  163.3W mb=4.7  EMSC   UNIMAK ISLAND REGION, ALASKA

O: 04JUN2023 00:54:51  53.6N  163.5W mb=4.9  EMSC   UNIMAK ISLAND REGION, ALASKA

O:  3JUN2023 20:42:40  53.4N  163.0W mb=3.9  EMSC   SOUTH OF ALASKA              

P: 31MAY2023 153828    54.0N  164.9W 3.5-5.1 BAAAA  Unimak Islands, Aleutians  

 

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O:  4JUN2023 04:51:12  34.1N   46.6E mb=4.5  EMSC   WESTERN IRAN                 

P:  3JUN2023 153734    36.0N   46.0E 3.8-5.6 ABAAA  No. Iran                   

 

NEIC reported this earthquake of M 4.5 in Western Iran was felt with intensity II-III in the area(s) of Western Iran in Aslamabad, Kermanshah.

 

O:  3JUN2023 23:15:18  50.0N   88.0E mb=3.8  EMSC   SOUTHWESTERN SIBERIA, RUSSIA 

P: 31MAY2023 153825    50.0N   88.0E 3.0-4.6 BAAAA  So. Siberia                

 

O:  3JUN2023 07:48:45  36.9N   61.6E mb=4.5  EMSC   TURKMENISTAN                 

P: 29MAY2023 153431    33.0N   60.0E 3.8-5.4 BCBAA  Afghanistan                

 

O:  3JUN2023 09:23:58  37.6N   56.7E mb=4.4  EMSC   NORTHEASTERN IRAN             

P:  1JUN2023 153777    40.0N   55.0E 4.0-5.4 ACBAA  Kazakhstan                 

 

INDONESIA AND PHILIPPINES

 

O:  3JUN2023 08:51:52   0.6N   96.4E ML=4.5  EMSC   NIAS REGION, INDONESIA       

P:  2JUN2023 153632     0.0N   97.0E 4.0-5.6 AAAAA  Nicobar Islands            

 

O:  4JUN2023 05:52:03   3.0S  137.3E mb=5.0  EMSC   PAPUA, INDONESIA             

P: 10JUN2023 153658     1.0S  137.0E 4.0-5.4 CBAAA  West Irian, PNG            

 

O:  3JUN2023 08:39:51   6.4N  124.7E mb=4.6  EMSC   MINDANAO, PHILIPPINES        

P: 10JUN2023 153623     7.0N  124.0E 4.0-5.8 CAAAA  Central Philippines        

 

NEIC reported this earthquake of M 4.6 in Mindanao, Philippines was felt with intensity II-III in the area(s) of Mindanao, Philippines in Buayan and Talangnan, Central Visayas.

 

O:  4JUN2023 00:25:10   6.8S  130.4E mb=5.4  EMSC   BANDA SEA                    

O: 03JUN2023 17:06:26   6.4S  130.3E mb=4.6  EMSC   BANDA SEA

P: 30MAY2023 153660     6.0S  130.0E 4.0-5.8 BAAAA  West Irian, PNG            

 

NEIC reported this earthquake of M 5.2 in the Banda Sea was felt with intensity II-III in the area(s) of  Northern Territory, Australia at Darwin.

 

O:  3JUN2023 12:45:38   7.8S  122.5E ML=4.0  EMSC   FLORES SEA                   

P:  7JUN2023 153640     8.0S  122.0E 4.0-5.6 BAAAA  Flores Island area         

 

O:  4JUN2023 03:27:18   8.8N  126.1E ML=4.4  EMSC   MINDANAO, PHILIPPINES        

P: 30MAY2023 153623     9.0N  126.0E 4.0-5.6 BAAAA  Central Philippines        

 

O:  3JUN2023 22:39:44  15.9N  144.9E mb=4.9  EMSC   SAIPAN REG., N. MARIANA ISLAND

P:  1JUN2023 153682    18.0N  145.0E 4.0-5.4 ABAAA  No. Marianas               

 

O:  3JUN2023 10:57:34  18.3N  145.9E mb=4.6  EMSC   PAGAN REG., N. MARIANA ISLANDS

P:  1JUN2023 153682    18.0N  145.0E 4.0-5.4 AAAAA  No. Marianas               

 

CENTRAL AND SOUTH AMERICA

 

O:  3JUN2023 10:14:49  13.2N   83.0W ML=4.1  EMSC   CARIBBEAN SEA                

P:  2JUN2023 153665    10.0N   84.0W 3.5-5.3 ACAAA  Caribbean Sea              

 

O:  3JUN2023 08:37:24  15.0N   94.5W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P:  8JUN2023 153667    16.0N   94.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O:  4JUN2023 01:25:04  15.2S   73.0W mb=4.0  EMSC   SOUTHERN PERU                

P:  7JUN2023 153852    16.0S   74.0W 4.0-5.7 BAAAA  So. Peru/Bolivia           

 

O:  3JUN2023 18:03:26  16.0N   97.6W ML=4.2  EMSC   OAXACA, MEXICO               

P:  4JUN2023 153685    15.0N   98.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O:  3JUN2023 07:17:43  16.0S   71.9W mb=4.7  EMSC   SOUTHERN PERU                

P:  6JUN2023 153853    17.0S   72.0W 4.0-5.5 BAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 4.0 in Southern Peru was felt with intensity II-III in the area(s) of Southern Peru in Arequipa at Orcopampa.

 

O:  4JUN2023 04:39:42  16.3S   74.1W ML=4.0  EMSC   NEAR COAST OF SOUTHERN PERU  

P:  7JUN2023 153852    16.0S   74.0W 4.0-5.7 BAAAA  So. Peru/Bolivia           

 

O:  4JUN2023 06:19:37  18.2N   68.0W Md=3.3  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P:  5JUN2023 153687    19.0N   68.0W 3.4-5.3 AAAAA  Puerto Rico                

 

O:  3JUN2023 14:12:56  18.3S   71.4W Mw=4.3  EMSC   OFF COAST OF TARAPACA, CHILE 

P:  6JUN2023 153853    17.0S   72.0W 4.0-5.5 BBAAA  So. Peru/Bolivia           

 

O:  3JUN2023 10:08:34  20.8S   68.8W Mw=5.0  EMSC   TARAPACA, CHILE              

P:  1JUN2023 153870    20.0S   69.0W 4.0-6.1 AAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 5.0 in Tarapaca, northern Chile was felt with intensity II-III in the area(s) of Tarapaca, northern Chile in Iquique and Arica.

 

O:  4JUN2023 06:05:26  23.6S   67.8W mb=4.7  EMSC   ANTOFAGASTA, CHILE           

P:  4JUN2023 153861    24.0S   67.0W 4.0-5.6 AAAAA  Argentina                  

 

O:  3JUN2023 08:21:52  27.0N  111.5W mb=4.1  EMSC   GULF OF CALIFORNIA           

O: 03JUN2023 08:20:01  27.3N  111.5W ML=3.6  EMSC   GULF OF CALIFORNIA

P: 30MAY2023 153694    25.0N  113.0W 3.5-5.0 BBBAA  Gulf of California         

 

 

AFRICA AND EUROPE

 

O:  4JUN2023 04:14:48  14.5N   40.0E mb=4.7  EMSC   ERITREA-ETHIOPIA BORDER REGION

P:  2JUN2023 153670    12.0N   40.0E 3.5-5.0 ACAAA  Ethiopia                   

 

O:  3JUN2023 22:25:20  38.2N   39.4E ML=4.1  EMSC   EASTERN TURKEY               

P:  6JUN2023 153759    38.0N   38.0E 3.5-5.1 BAAAA  Turkey                     

 

O:  3JUN2023 15:07:27  39.4N   37.2E mb=4.1  EMSC   CENTRAL TURKEY               

P:  6JUN2023 153759    38.0N   38.0E 3.5-5.1 BBAAA  Turkey                     

 

O:  3JUN2023 10:15:40  45.4N   23.0E ML=2.3  EMSC   ROMANIA                      

P:  5JUN2023 153799    45.0N   22.0E 3.0-5.6 AAAAA  Romania/NW Turkey          

 

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

 

SOUTHWEST PACIFIC

 

O:  4JUN2023 03:16:57  15.3S  173.3W mb=5.2  EMSC   TONGA                        

P:  2JUN2023 153849    15.0S  175.0W 4.0-5.6 AABAA  Samoa Islands              

 

O:  3JUN2023 21:49:33  18.0S  178.5W mb=4.8  EMSC   FIJI REGION                  

P: 30MAY2023 153857    18.0S  178.0W 4.0-5.4 BAAAA  Tonga Islands              

 

O:  3JUN2023 23:53:58  25.5S  179.5W mb=4.3  EMSC   SOUTH OF FIJI ISLANDS        

P:  9JUN2023 153872    25.0S  177.0W 4.0-5.4 CABAA  Tonga Islands              

 

O:  3JUN2023 23:01:47  18.4S  168.1E mb=4.7  EMSC   VANUATU                      

P:  6JUN2023 153873    20.0S  169.0E 4.0-5.6 BBAAA  Vanuatu Islands            

 

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

 

OCEAN RIDGES

 

O: 03JUN2023 07:04:26  12.5N   48.2E mb=4.7  EMSC   GULF OF ADEN

O: 03JUN2023 07:04:26  12.5N   48.2E mb=4.7  EMSC   GULF OF ADEN

O: 03JUN2023 10:32:07  12.5N   48.1E mb=4.8  EMSC   GULF OF ADEN

O: 03JUN2023 10:53:53  12.5N   48.1E mb=4.4  EMSC   GULF OF ADEN

O: 03JUN2023 14:10:36  12.5N   48.1E mb=4.8  EMSC   GULF OF ADEN

O: 03JUN2023 07:17:48  12.6N   47.9E Mw=5.8  EMSC   GULF OF ADEN

O: 03JUN2023 08:56:04  12.6N   47.9E mb=4.5  EMSC   GULF OF ADEN

O: 03JUN2023 10:45:33  12.7N   48.0E mb=4.5  EMSC   GULF OF ADEN

O: 03JUN2023 13:58:06  12.7N   48.0E Mw=5.5  EMSC   GULF OF ADEN

O: 03JUN2023 09:43:38  13.0N   47.8E mb=4.6  EMSC   GULF OF ADEN

O:  3JUN2023 10:15:55  12.4N   48.0E mb=4.8  EMSC   GULF OF ADEN                 

P:  2JUN2023 153672    13.0N   51.0E 3.5-5.1 AACAA  Gulf of Aden               

 

O:  4JUN2023 04:14:48  14.5N   40.0E mb=4.7  EMSC   ERITREA-ETHIOPIA BORDER REGION

P:  2JUN2023 153670    12.0N   40.0E 3.5-5.0 ACAAA  Ethiopia                   

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  4JUN2023 03:20:02  29.3S  179.8E ML=4.3  EMSC   KERMADEC ISLANDS REGION      

O:  3JUN2023 20:01:19  33.8S  179.2E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS    

O:  3JUN2023 09:39:04  34.6S  178.9E ML=4.2  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  7JUN2023 153881    32.0S  178.0E 4.0-5.4 BCAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O:  4JUN2023 01:46:29  23.0N  143.1E mb=4.7  EMSC   VOLCANO ISLANDS, JAPAN REGION

P:  6JUN2023 153707    22.0N  143.0E 4.0-5.6 AAAAA  Volcano Islands            

 

O:  4JUN2023 06:50:30  35.6N  140.2E ML=4.0  EMSC   NEAR EAST COAST OF HONSHU, JAP

O:  4JUN2023 01:58:33  35.8N  140.1E mb=4.7  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  3JUN2023 153738    35.0N  141.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

NEIC reported this earthquake of M 4.9 near Tokyo, Honshu, Japan  was felt with intensity II-III in the area(s) of Tokyo, Honshu, Japan in Chiba (IV), Saitama, Ibaraki, Tokyo, Kanagawa Prefectures, Japan.

 

O:  3JUN2023 10:35:41  42.1N  142.5E mb=4.9  EMSC   HOKKAIDO, JAPAN REGION       

P:  6JUN2023 153773    41.0N  142.0E 3.5-5.4 BBAAA  Hokkaido, Japan            

P: 30MAY2023 153773    43.0N  143.0E 3.5-5.4 BAAAA  Hokkaido, Japan            

 

NEIC reported this earthquake of M 4.8 in Hokkaido, Japan was felt with intensity II-III in the area(s) of Hokkaido, Japan in Noboribetsu, Sapporo and in Misawa, Aomori.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  3JUN2023 22:26:42  30.4N  114.4W ML=3.7  EMSC   GULF OF CALIFORNIA           

P:  6JUN2023 153744    31.0N  114.3W 2.5-4.7 BAAAA  So. California             

 

O: 03JUN2023 08:04:11  30.8N  116.3W ML=3.5  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O:  3JUN2023 07:49:05  30.8N  116.3W ML=3.5  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P:  4JUN2023 153743    31.9N  116.3W 2.5-4.7 AAAAA  So. California             

 

O:  4JUN2023 02:41:57  32.7N  115.8W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P:  3JUN2023 153746    32.9N  115.6W 2.5-4.6 AAAAA  So. California             

 

O:  4JUN2023 04:43:02  33.2N  116.5W ML=3.1  EMSC   SOUTHERN CALIFORNIA          

P:  5JUN2023 153746    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

P:  7JUN2023 153747    33.4N  116.7W 2.5-4.8 BAAAA  So. California             

 

NEIC reported this earthquake of M 3.2 in Southern California was felt with intensity II-III in the area(s) of Southern California in Santa Ysabel, Warner Springs, Borrego Springs, Julian, Ramona, Pine Valley, Alpine, Lakeside, Escondido among others.

 

O:  3JUN2023 07:25:00  35.6N  118.3W Ml=2.7  EMSC   CENTRAL CALIFORNIA           

O: 03JUN2023 08:02:10  35.7N  118.3W Ml=2.4  EMSC   CENTRAL CALIFORNIA

O:  3JUN2023 07:08:23  35.7N  118.3W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P:  1JUN2023 153751    35.7N  118.1W 2.5-4.9 AAAAA  So. California              

 

NEIC reported this earthquake of M 2.7 in Central California was felt with intensity II-III in the area(s) of Central California in Bodfish (V), Lake Isabella and Weldon.

 

O:  4JUN2023 05:07:34  36.0N  117.8W Ml=2.4  EMSC   CENTRAL CALIFORNIA            

P:  5JUN2023 153709    36.2N  117.9W 2.5-4.9 AAAAA  California/Nevada area     

 

O: 03JUN2023 09:50:49  36.8N  121.3W Md=2.0  EMSC   CENTRAL CALIFORNIA

O:  4JUN2023 02:23:09  36.6N  121.2W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P:  3JUN2023 153716    36.8N  121.3W 2.5-4.4 AAAAA  Central California         

 

O: 03JUN2023 07:45:34  39.6N  120.0W ml=2.0  EMSC   NEVADA

O:  4JUN2023 00:20:54  39.6N  120.0W ML=2.7  EMSC   NEVADA                       

P:  2JUN2023 153792    40.0N  121.0W 2.5-4.7 AAAAA  Northern California        

P: 27MAY2023 153438    39.3N  120.0W 2.5-4.5 CAAAA  California/Nevada area     

 

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

 

O: 03JUN2023 12:02:39  38.8N  122.8W Md=2.9  EMSC   NORTHERN CALIFORNIA

O: 03JUN2023 12:07:20  38.8N  122.8W Md=2.5  EMSC   NORTHERN CALIFORNIA

O: 03JUN2023 12:10:25  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA

O:  3JUN2023 12:01:19  38.8N  122.8W Mw=4.4  EMSC   NORTHERN CALIFORNIA          

P:  5JUN2023 153717    38.9N  122.8W 2.5-4.6 AAAAA  Central California         

 

ALASKA

 

O:  3JUN2023 17:38:32  61.1N  147.4W ML=3.1  EMSC   SOUTHERN ALASKA              

P:  1JUN2023 153832    60.1N  148.4W 3.2-5.2 AAAAA  Central Alaska             

 

O:  3JUN2023 19:41:26  64.9N  151.0W ML=3.0  EMSC   CENTRAL ALASKA               

P: 29MAY2023 153560    63.3N  151.0W 3.2-4.9 BBAAA  Central Alaska             

 

O: 03JUN2023 15:24:56  53.5N  163.2W mb=4.9  EMSC   UNIMAK ISLAND REGION, ALASKA

O: 03JUN2023 15:37:21  53.5N  163.2W ml=3.6  EMSC   UNIMAK ISLAND REGION, ALASKA

O: 03JUN2023 22:49:24  53.6N  163.3W mb=4.7  EMSC   UNIMAK ISLAND REGION, ALASKA

O: 04JUN2023 00:54:51  53.6N  163.5W mb=4.9  EMSC   UNIMAK ISLAND REGION, ALASKA

O:  3JUN2023 20:42:40  53.4N  163.0W mb=3.9  EMSC   SOUTH OF ALASKA              

P: 31MAY2023 153828    54.0N  164.9W 3.5-5.1 BAAAA  Unimak Islands, Aleutians  

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  3JUN2023 17:24:20  49.4N  120.5W Ml=2.1  EMSC   BRITISH COLUMBIA, CANADA     

P:  8JUN2023 153804    47.7N  120.3W 2.0-4.1 BBAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O:  3JUN2023 10:49:40  31.7N  104.1W ML=2.5  EMSC   WESTERN TEXAS                

P:  4JUN2023 153742    31.4N  103.8W 2.0-3.9 AAAAA  SW U.S.A                   

 

O:  4JUN2023 01:28:23  44.3N  114.8W Ml=2.2  EMSC   SOUTHERN IDAHO               

P:  2JUN2023 153781    44.6N  115.0W 2.0-4.1 AAAAA  Montana/Idaho              

 

O:  3JUN2023 15:23:56  41.2N  111.3W ML=2.6  EMSC   UTAH                         

P:  7JUN2023 153762    39.8N  112.7W 2.0-4.5 BBBAA  Utah area                  

 

O:  3JUN2023 07:06:54  41.4N  106.8W ML=3.2  EMSC   WYOMING                      

P:  8JUN2023 153770    40.6N  106.6W 2.0-4.4 BAAAA  Colorado area              

 

NEIC reported an aftershock of M 3.2 in Wyoming was felt with intensity II-III in the area(s) of Wyoming in Saratoga.

 

EASTERN U.S./CANADA

 

O:  3JUN2023 10:56:48  35.1N   97.6W ML=2.8  EMSC   OKLAHOMA                      

P:  3JUN2023 153757    36.0N   97.0W 2.0-3.9 AAAAA  Southeast U.S.             

 

NEIC reported this earthquake of M 2.5 in Oklahoma was felt with intensity II-III in the area(s) of Oklahoma in Blanchard, Norman, Purcel, Ponca City and Tulsa.

 

O:  3JUN2023 16:15:19  36.3N   89.4W mb=2.8  EMSC   TENNESSEE                    

P:  4JUN2023 153730    36.7N   89.7W 2.0-4.1 AAAAA  New Madrid area            

 

NEIC reported this earthquake of M 2.8 in Tennessee was felt with intensity II-III in the area(s) of Tennessee in Ridgely, Obion and Jackson.

 

O:  3JUN2023 17:02:59  37.5N   87.6W Md=2.5  EMSC   WESTERN KENTUCKY             

P: 26MAY2023 153458    38.0N   89.0W 2.0-4.1 CAAAA  New Madrid area            

 

NEIC reported this aftershock of M 2.5 in Western Kentucky was felt with intensity II-III in the area(s) of Western Kentucky in Nebo, Maisonville, Morganfield, Murray, Louisville and in Alma, Illinois.

 

HAWAII

 

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

 

MODERATE QUAKE SHAKES SOUTHERN PERU

 

EARTHQUAKE SUMMARY FOR JUNE 2, 2023

 

 

A moderate earthquake of M 5.5 shook the area of Southern Peru north of Arequipa today. It was strongly felt with intensity VIII in Arequipa at Chivay and IV in Arequipa. An aftershock of M 5.1 was felt with intensity VIII in Lluta, Arequipa, Peru. It was followed by aftershocks of M 5.0 and 5.1. This is the strongest earthquake in Southern Peru within about 150 km of this epicenter since an M 5.5 on July 12, 2022. A major earthquake about 200 km northeast of today's epicenter of M 7.2 occurred in the area a year ago on May 26, 2022. At the time this summary noted:

 

"Only one other earthquake of equal or larger magnitude has occurred in Southern

Peru within about 300 km of today's epicenter - an M 7.5-7.6 on July 7, 2001." (May 26, 2022)

 

A strong M 6.0 was also recorded in the area on May 31, 2020.

 

Forecast 153853 had expected today's events within about 100 km were likely around June 6, 2023. This epicenter is at 103 degrees from the M 7.7 in the  Loyalty Islands of May 19 and may have been promoted by energy from that source.

 

O: 03JUN2023 02:27:39  15.9S   71.9W Mw=5.1  EMSC   SOUTHERN PERU

O: 03JUN2023 02:48:12  15.9S   72.0W mb=5.0  EMSC   SOUTHERN PERU

O:  3JUN2023 01:49:14  15.7S   71.5W Mw=5.5  EMSC   SOUTHERN PERU                

P:  6JUN2023 153853    17.0S   72.0W 4.0-5.5 BBAAA  So. Peru/Bolivia           

 

A strong series of earthquakes also continued today in the Gulf of Aden east of Sudan and Ethiopia. An earthquake of M 5.7 hit this area on May 19, 2023 and this may be aftershocks of that event. Forecast 153672 had expected today's activity was likely in this area around  June 2.

 

O:  3JUN2023 06:49:04  12.2N   48.2E mb=4.6  EMSC   GULF OF ADEN                 

O: 03JUN2023 06:23:33  12.4N   48.2E Mw=5.0  EMSC   GULF OF ADEN

O: 03JUN2023 06:29:04  12.4N   48.4E mb=4.9  EMSC   GULF OF ADEN

O: 03JUN2023 06:37:57  12.5N   48.2E mb=4.9  EMSC   GULF OF ADEN

P:  2JUN2023 153672    13.0N   51.0E 3.5-5.1 AACAA  Gulf of Aden                

 

The strongest earthquake felt in the U.S or Canada today was an M 3.9 in Wyoming. NEIC reported this earthquake of M 3.9 in Southern Wyoming was felt with intensity II-III in the area(s) of Southern Wyoming in Saratoga, Encampment, Laramie, and in Fort Collins, Colorado. NEIC reported an aftershock of M 3.2 in Wyoming was felt with intensity II-III in the area(s) of Wyoming in Saratoga. This is the strongest earthquake within Wyoming within about 150 km of this epicenter since an M 3.9 on October 1, 2005 and an M 4.3 on January 31, 2002. Forecast 153770 had expected this event within about 100 km was likely around June 8, 2023.

 

O:  2JUN2023 08:14:47  41.4N  106.8W mb=3.9  EMSC   WYOMING                      

P:  8JUN2023 153770    40.6N  106.6W 2.0-4.4 CAAAA  Colorado area              

 

An M 4.1 also occurred as an aftershock in the Andreanof Islands, Aleutians, Alaska today. It was not reported felt in this remote area.  The mainshock occurred earlier on June 3 and was described in the previous issue of this summary as:

 

"The last earthquake of significantly larger magnitude in this area of the

Andreanof Islands occurred on March 11, 2023 with M 4.6 and April 12, 2022 with M 4.9. The strongest earthquake in the area in the past 3 years was an M 6.1 on September 24, 2021 and an M 6.1 on January 3, 2021. Today's event may have been promoted by the M 5.7 South of Africa" (June 2, 2023)

 

Forecast 153809 had expected this event about 150 km southwest of today's epicenter was likely in the Andreanof Islands around June 5.

 

O:  3JUN2023 04:51:11  52.3N  178.7W mb=4.1  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P:  5JUN2023 153809    50.6N  179.2W 3.5-5.1 ABAAA  Andreanoff Isls, Aleutians 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O:  2JUN2023 09:48:43  24.2N  122.2E mb=4.2  EMSC   TAIWAN REGION                

O:  2JUN2023 09:48:43  24.3N  122.1E ML=4.5  TAI    Hualien, Taiwan              

P:  3JUN2023 153705    24.0N  122.0E 4.0-5.4 AAAAA  Taiwan                     

 

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

 

O:  2JUN2023 21:25:28  55.4N  163.1E mb=4.2  EMSC   OFF EAST COAST OF KAMCHATKA  

P:  3JUN2023 153819    56.0N  163.0E 4.0-6.0 AAAAA  Komandorsky Isl            

 

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

 

INDONESIA AND PHILIPPINES

 

O:  2JUN2023 17:33:10   0.4N  123.1E mb=4.4  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  7JUN2023 153620     1.0N  122.0E 4.0-5.4 BAAAA  Celebes Sea                

 

O:  2JUN2023 14:16:32   1.9N   99.5E mb=4.9  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 30MAY2023 153634     3.0N   99.0E 4.0-5.6 ABAAA  So. Sumatera               

 

O:  2JUN2023 21:40:14   4.8N  125.5E mb=4.6  EMSC   KEPULAUAN SANGIHE, INDONESIA 

O: 02JUN2023 21:31:09   4.6N  125.4E ML=4.1  EMSC   KEPULAUAN SANGIHE, INDONESIA

P:  9JUN2023 153631     4.0N  126.0E 4.0-5.4 CAAAA  Mindanao, Philippines      

 

O:  2JUN2023 10:26:58   5.9S  152.3E mb=4.8  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 31MAY2023 153644     6.0S  152.0E 4.0-5.4 AAAAA  New Britain                

 

O: 02JUN2023 17:40:05   6.2N  121.0E mb=4.6  EMSC   SULU ARCHIPELAGO, PHILIPPINES

O:  2JUN2023 15:39:14   6.0N  121.1E ML=4.6  EMSC   SULU ARCHIPELAGO, PHILIPPINES

P:  7JUN2023 153620     1.0N  122.0E 4.0-5.4 BCAAA  Celebes Sea                

 

O:  2JUN2023 21:57:16   6.5S  127.7E mb=4.5  EMSC   BANDA SEA                    

P:  4JUN2023 153635     7.0S  128.0E 4.0-5.5 AAAAA  Banda Sea                  

 

O:  2JUN2023 08:50:24   6.8S  129.9E ML=4.2  EMSC   BANDA SEA                    

P: 30MAY2023 153660     6.0S  130.0E 4.0-5.8 AAAAA  West Irian, PNG            

 

O:  2JUN2023 16:22:01  12.4N  123.7E ML=4.6  EMSC   MASBATE REGION, PHILIPPINES  

P:  1JUN2023 153675    12.0N  121.0E 3.5-4.9 AACAA  Luzon, Philippines         

P:  9JUN2023 153675    13.0N  122.0E 3.5-5.0 CABAA  Luzon, Philippines         

 

CENTRAL AND SOUTH AMERICA

 

O:  2JUN2023 15:13:22  12.3N   87.8W mb=4.3  EMSC   NEAR COAST OF NICARAGUA      

P:  5JUN2023 153681    12.0N   88.0W 3.5-5.1 BAAAA  Nicaragua                  

 

O:  2JUN2023 20:57:31  13.7N   97.0W ML=4.3  EMSC   OFF COAST OF OAXACA, MEXICO  

P:  4JUN2023 153685    15.0N   98.0W 3.5-5.3 ABAAA  Oaxaca, Mexico             

 

O:  2JUN2023 12:52:29  14.8N   93.2W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  4JUN2023 153666    16.0N   93.0W 3.5-5.3 ABAAA  Chiapas, Mexico            

P:  8JUN2023 153666    15.0N   93.0W 3.5-5.3 CAAAA  Chiapas, Mexico            

 

O: 03JUN2023 02:27:39  15.9S   71.9W Mw=5.1  EMSC   SOUTHERN PERU

O: 03JUN2023 02:48:12  15.9S   72.0W mb=5.0  EMSC   SOUTHERN PERU

O:  3JUN2023 01:49:14  15.7S   71.5W Mw=5.5  EMSC   SOUTHERN PERU                

P:  6JUN2023 153853    17.0S   72.0W 4.0-5.5 BBAAA  So. Peru/Bolivia           

 

O:  2JUN2023 14:06:40  16.2S   75.6W mb=4.6  EMSC   OFF COAST OF SOUTHERN PERU   

O: 02JUN2023 16:27:38  16.1S   75.5W ML=4.0  EMSC   OFF COAST OF SOUTHERN PERU

P: 28MAY2023 153571    15.0S   76.0W 4.0-5.6 BBAAA  Central Peru               

P:  7JUN2023 153852    16.0S   74.0W 4.0-5.7 BABAA  So. Peru/Bolivia           

 

O: 02JUN2023 10:40:39  17.3N   94.2W ML=4.0  EMSC   VERACRUZ, MEXICO

O:  2JUN2023 09:23:23  17.2N   94.5W ML=4.0  EMSC   VERACRUZ, MEXICO             

O: 02JUN2023 10:40:39  17.3N   94.2W ML=4.0  EMSC   VERACRUZ, MEXICO

P:  1JUN2023 153667    17.0N   95.0W 3.5-5.1 AAAAA  Chiapas, Mexico            

 

O:  3JUN2023 00:49:52  17.2S   69.7W mb=4.3  EMSC   SOUTHERN PERU                

P:  8JUN2023 153852    17.0S   69.0W 4.0-5.6 BAAAA  So. Peru/Bolivia           

 

O:  2JUN2023 19:54:26  17.9N   67.0W Md=3.0  EMSC   PUERTO RICO REGION           

P:  1JUN2023 153686    18.0N   67.0W 3.4-5.2 AAAAA  Puerto Rico                

 

O:  2JUN2023 11:28:57  18.0N   99.4W ML=4.1  EMSC   GUERRERO, MEXICO             

P:  1JUN2023 153685    18.0N   99.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O:  2JUN2023 07:52:11  18.9N   65.0W Md=3.3  EMSC   VIRGIN ISLANDS REGION        

O:  2JUN2023 08:45:07  19.4N   65.7W Md=3.9  EMSC   PUERTO RICO REGION           

P:  1JUN2023 153674    18.0N   64.0W 3.0-5.5 AABAA  Leeward Islands            

 

O:  2JUN2023 17:46:41  19.4N   92.6W ML=4.1  EMSC   OFFSHORE TABASCO, MEXICO     

P:  4JUN2023 153666    16.0N   93.0W 3.5-5.3 ACAAA  Chiapas, Mexico            

 

O:  2JUN2023 18:58:50  23.6S   66.9W ML=4.2  EMSC   JUJUY, ARGENTINA             

P:  4JUN2023 153861    24.0S   67.0W 4.0-5.6 AAAAA  Argentina                  

 

NEIC reported this earthquake of M 4.6 in Jujuy, Argentina was felt with intensity II-III in the area(s) of Argentina in Cordoba.

 

O:  3JUN2023 00:11:48  27.5S   66.5W mb=4.9  EMSC   CATAMARCA, ARGENTINA         

P:  1JUN2023 153862    27.0S   71.0W 4.0-5.6 AACAA  Coast Central Chile        

 

NEIC reported this earthquake of M 4.9 in Catamarca, Argentina was felt with intensity II-III in the area(s) of  Tucuman, Argentina.

 

O:  3JUN2023 10:08     20.7S   68.9W mb=5.0  GUC    Tarapaca at Alto Hospicio, Col

P:  1JUN2023 153870    20.0S   69.0W 4.0-6.1 AAAAA  So. Peru/Bolivia           

 

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O:  2JUN2023 16:00:55  17.8S  178.6W mb=4.6  EMSC   FIJI REGION                  

P: 30MAY2023 153857    18.0S  178.0W 4.0-5.4 AAAAA  Tonga Islands              

 

O:  2JUN2023 22:08:23  20.7S  178.1W mb=4.6  EMSC   FIJI REGION                  

P: 28MAY2023 153596    22.0S  179.0W 4.0-5.5 BBAAA  Tonga Islands              

 

O: 02JUN2023 13:53:32  18.4S  168.1E mb=4.8  EMSC   VANUATU

O: 03JUN2023 01:06:47  18.4S  168.2E mb=4.9  EMSC   VANUATU

O:  3JUN2023 01:44:25  18.2S  168.2E mb=5.0  EMSC   VANUATU                      

P: 28MAY2023 153584    19.0S  170.0E 4.0-5.5 BABAA  Vanuatu Islands            

 

NEIC reported this earthquake of M 5.0 in Southern Vanuatu was felt with intensity II-III in the area(s) of Southern Vanuatu in Vila Shefa.

 

O:  2JUN2023 17:39:17  22.8S  176.0W mb=5.1  EMSC   TONGA REGION                 

P:  2JUN2023 153872    21.0S  177.0W 4.0-5.4 ABAAA  Tonga Islands              

 

O: 02JUN2023 11:46:33  23.5S  171.3E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O:  2JUN2023 15:53:58  23.3S  171.7E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P:  4JUN2023 153864    22.0S  171.0E 4.0-5.5 ABAAA  Loyalty Islands            

 

OCEAN RIDGES

 

O:  3JUN2023 03:47:12   5.8S   11.6W mb=4.6  EMSC   ASCENSION ISLAND REGION      

P:  4JUN2023 153649     2.0S   13.0W 4.0-5.5 ACBAA  No. of Ascension Isl       

P: 25MAY2023 153372     5.0S   12.0W 4.0-5.4 CAAAA  No. of Ascension Isl       

 

O:  3JUN2023 06:49:04  12.2N   48.2E mb=4.6  EMSC   GULF OF ADEN                 

O: 03JUN2023 06:23:33  12.4N   48.2E Mw=5.0  EMSC   GULF OF ADEN

O: 03JUN2023 06:29:04  12.4N   48.4E mb=4.9  EMSC   GULF OF ADEN

O: 03JUN2023 06:37:57  12.5N   48.2E mb=4.9  EMSC   GULF OF ADEN

P:  2JUN2023 153672    13.0N   51.0E 3.5-5.1 AACAA  Gulf of Aden               

 

O:  2JUN2023 15:42:44  60.9S   25.6W Mw=5.3  EMSC   SOUTH SANDWICH ISLANDS REGION

P:  5JUN2023 153890    61.0S   26.0W 4.0-5.6 BAAAA  Southern  Ocean            

 

O:  3JUN2023 05:17:31  75.9N    7.3E mb=4.3  EMSC   GREENLAND SEA                

P:  1JUN2023 153843    74.0N   14.0E 3.0-4.4 ABAAA  Norway                     

 

 

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:  2JUN2023 10:08:26  44.2N  142.0E mb=4.4  EMSC   HOKKAIDO, JAPAN REGION       

P: 30MAY2023 153773    43.0N  143.0E 3.5-5.4 ABAAA  Hokkaido, Japan             

 

O:  2JUN2023 15:13:25  47.1N  152.8E mb=4.4  EMSC   KURIL ISLANDS                

P:  4JUN2023 153801    46.0N  154.0E 3.5-5.4 ABAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 02JUN2023 17:35:17  30.8N  116.3W ML=3.2  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 02JUN2023 18:54:33  30.9N  115.2W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO

 

O:  2JUN2023 09:35:24  30.7N  116.3W ML=3.6  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P:  4JUN2023 153743    31.9N  116.3W 2.5-4.7 ABAAA  So. California             

 

O:  2JUN2023 20:19:46  33.0N  116.3W ML=2.8  EMSC   SOUTHERN CALIFORNIA          

P: 30MAY2023 153743    32.0N  116.3W 2.5-4.8 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.0 in Southern California was felt with intensity II-III in the area(s) of Southern California in Julian, Pine Valley, Santee, Escondido, Sun City and Long Beach.

 

O:  2JUN2023 11:54:46  35.5N  118.4W ML=2.6  EMSC   CENTRAL CALIFORNIA           

O: 02JUN2023 11:54:46  35.5N  118.4W ML=2.6  EMSC   CENTRAL CALIFORNIA

O: 03JUN2023 06:55:44  35.7N  118.3W Ml=2.6  EMSC   CENTRAL CALIFORNIA

P:  1JUN2023 153751    35.7N  118.1W 2.5-4.9 AAAAA  So. California             

P:  5JUN2023 153751    35.3N  118.6W 2.5-4.9 BAAAA  So. California             

 

NEIC reported this earthquake of M 2.6 in Central California was felt with intensity II-III in the area(s) of Central California in Lake Isabella, Bodfish and Weldon.

An earlier M 2.7 was felt with intensity II-III in Lake Isabella and Caliente.

 

O: 02JUN2023 18:07:29  36.6N  121.3W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 02JUN2023 18:21:11  36.7N  121.3W Md=2.0  EMSC   CENTRAL CALIFORNIA

O: 02JUN2023 19:44:18  36.8N  121.5W Md=2.0  EMSC   CENTRAL CALIFORNIA

O:  2JUN2023 19:44:18  36.8N  121.5W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P:  3JUN2023 153716    36.8N  121.3W 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 in Los Banos.

 

O:  2JUN2023 09:11:53  37.4N  120.0W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P:  1JUN2023 153711    37.4N  118.6W 2.5-4.7 AABAA  California/Nevada area     

 

O:  2JUN2023 15:03:49  37.5N  118.8W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P:  1JUN2023 153711    37.4N  118.6W 2.5-4.7 AAAAA  California/Nevada area     

 

O: 02JUN2023 14:53:34  39.6N  120.0W ml=2.0  EMSC   NEVADA

O: 02JUN2023 16:12:05  39.6N  120.0W ml=2.0  EMSC   NEVADA

O:  2JUN2023 10:34:20  39.6N  120.0W ml=2.5  EMSC   NEVADA                       

P:  2JUN2023 153768    40.2N  119.6W 2.5-4.4 AAAAA  California/Nevada area     

P: 27MAY2023 153438    39.3N  120.0W 2.5-4.5 CAAAA  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 in Reno.

 

O: 02JUN2023 08:21:51  40.2N  121.1W Md=2.4  EMSC   NORTHERN CALIFORNIA

O:  2JUN2023 11:09:28  40.2N  121.2W ML=2.4  EMSC   NORTHERN CALIFORNIA          

P:  2JUN2023 153792    40.0N  121.0W 2.5-4.7 AAAAA  Northern California        

 

ALASKA

 

O:  2JUN2023 21:44:22  51.5N  177.0W ml=3.7  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P:  6JUN2023 153810    51.1N  175.8W 3.5-5.0 BAAAA  Andreanoff Isls, Aleutians 

P:  6JUN2023 153810    51.7N  176.4W 3.5-5.1 BAAAA  Andreanoff Isls, Aleutians 

 

O:  3JUN2023 04:51:11  52.3N  178.7W mb=4.1  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P:  5JUN2023 153809    50.6N  179.2W 3.5-5.1 ABAAA  Andreanoff Isls, Aleutians 

 

O:  3JUN2023 00:56:39  54.7N  158.5W ML=3.5  EMSC   SOUTH OF ALASKA              

P:  3JUN2023 153807    54.8N  158.7W 3.5-5.3 AAAAA  Alaska Peninsula           

 

O:  2JUN2023 21:17:37  56.4N  149.3W ML=3.0  EMSC   GULF OF ALASKA               

P:  3JUN2023 153836    55.0N  149.0W 3.0-4.8 ABAAA  Northern Alaska            

 

O:  2JUN2023 11:51:23  59.9N  152.4W ML=3.0  EMSC   SOUTHERN ALASKA              

P:  3JUN2023 153831    60.0N  153.5W 3.2-5.3 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: 02JUN2023 13:48:10  31.6N  104.1W ML=2.1  EMSC   WESTERN TEXAS

O: 02JUN2023 14:45:39  31.6N  104.0W ML=2.3  EMSC   WESTERN TEXAS

O: 02JUN2023 09:28:16  31.7N  104.4W ML=2.1  EMSC   WESTERN TEXAS

O: 02JUN2023 19:04:03  31.7N  104.4W ML=2.1  EMSC   WESTERN TEXAS

O: 02JUN2023 21:51:49  31.7N  104.4W ML=3.6  EMSC   WESTERN TEXAS

O: 03JUN2023 00:01:09  31.7N  104.4W ML=3.0  EMSC   WESTERN TEXAS

O:  3JUN2023 01:30:59  31.1N  103.3W ML=2.6  EMSC   WESTERN TEXAS                

P:  4JUN2023 153742    31.4N  103.8W 2.0-3.9 AAAAA  SW U.S.A                   

 

O:  2JUN2023 08:14:47  41.4N  106.8W mb=3.9  EMSC   WYOMING                      

P:  8JUN2023 153770    40.6N  106.6W 2.0-4.4 CAAAA  Colorado area              

 

O:  3JUN2023 00:28:11  37.3N  104.5W ML=3.0  EMSC   COLORADO                     

P:  5JUN2023 153720    36.9N  105.1W 2.0-4.4 AAAAA  Colorado area              

 

NEIC reported this earthquake of M 3.0 in Southern Colorado was felt with intensity II-III in the area(s) of Southern Colorado in Trinidad.

 

EASTERN U.S./CANADA

 

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

 

HAWAII

 

O:  2JUN2023 20:15:30  19.3N  155.2W ML=3.2  EMSC   ISLAND OF HAWAII, HAWAII     

P:  5JUN2023 153673    19.4N  155.1W 3.0-4.9 AAAAA  Hawaii                     

 

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

 

MODERATE EARTHQUAKE IN GUAM TRIGGERED BY TYPHOON MAWAR

 

EARTHQUAKE SUMMARY FOR JUNE 1, 2023

 

One of the largest earthquakes in the world today was an M 5.3 in the area of Guam. NEIC did not report it as felt. This earthquake follows the passage of Typhoon Mawar over this epicenter several days ago and probably indicates a causal relationship. This has been previously noted in the relation between Typhoons in Guam in this summary and elsewhere. When Guam was approached by Typhoon Mawar noted in this regard:

 

"Typhoon Mawar (02W) continued today in the area of Guam with winds up to 165 kts.  It is expected to track to the northwest passing over Guam around March 24-25, 2023 as a typhoon with winds up to 165 kts. It is likely that a moderate to strong earthquake could occur near Guam with this storm in the next week. This appears to be the strongest typhoon to hit Guam in the past two decades." (May 25, 2023)

 

While an M 5.4 hit near this epicenter on May 12, 2023, the last event of significantly larger magnitude in the Guam region was an M 5.7 on August 29, 2022. This was also accompanied by a super-typhoon as noted in this summary at the time:

 

 

"The strongest earthquake felt in the world today was an M 5.7 in the area of Guam. NEIC reported it was felt with maximum intensity V in Guam at Barrigada, IV in Dededo, Yigo, Tamuning, Hagatna,Mangilao, Mongmong, Sinajana. An M 4.7 foreshock several hours earlier than the mainshock was not reported in felt in the area. This activity may have been promoted by a super-typhoon which passed north of Guam yesterday and is nearing southern Japan today. The M 5.7 is the strongest earthquake in the region of Guam since an M 5.9 on June 23, 2020 and an M 5.8 on September 23, 2018. Strong activity  near Guam is often associated with strong ocean storms." (August 29, 2022)

 

Forecasts 153688 and 153409 had expected enhanced seismicity in Guam at the end of May or in early July, 2023.

 

O:  2JUN2023 05:25:37  12.5N  144.8E mb=5.2  EMSC   GUAM REGION                  

O:  2JUN2023 05:25:37  12.5N  144.8E mb=5.3  ANSS   GUAM REGION                  

P:  7JUN2023 153688    12.0N  144.0E 4.0-5.4 BAAAA  So. Marianas/Guam          

P: 28MAY2023 153409    13.0N  144.0E 4.0-5.4 BAAAA  So. Marianas/Guam          

 

NEIC reported an earthquake of M 4.0 in Nevada was felt with intensity II-III in the area(s) of Nevada in Reno (IV) and Sparks and in Loyalton, California. An aftershock of M 3.1 was also felt lightly in Reno, Nevada. This appears to be the strongest earthquake within about 100 km of this epicenter since an M 4.2 on May 28, 2021 and an M 4.7 on May 7, 2021.  Today's activity may be related to the M 5.5 in Northern California about 150 km northwest of this which occurred on May 11, 2023 and has seen an M 5.6 off the coast of northern California on May 21 among others. The area has seen enhanced seismicity since that time and  further moderate earthquakes appear likely in Northern California in the next several days, possibly related to the events of May 11 and May 21. Forecasts 153768 and 153438  had expected this enhanced seismicity in this area was likely around May 27 to June 2, 2023.

 

O: 02JUN2023 00:28:07  39.6N  120.0W ML=3.0  EMSC   NEVADA

O: 02JUN2023 00:28:07  39.6N  120.0W ML=3.1  ANSS   NEVADA

O: 02JUN2023 01:41:34  39.6N  120.0W ml=2.2  EMSC   NEVADA

O: 02JUN2023 01:41:34  39.6N  120.0W ml=2.2  EMSC   NEVADA

O:  2JUN2023 00:23:05  39.6N  120.0W Mw=3.8  EMSC   NEVADA                       

O:  2JUN2023 00:23:05  39.6N  120.0W Mw=4.0  ANSS   NEVADA                       

P:  2JUN2023 153768    40.2N  119.6W 2.5-4.4 AAAAA  California/Nevada area     

P: 27MAY2023 153438    39.3N  120.0W 2.5-4.5 BAAAA  California/Nevada area     

 

The strongest earthquake in the U.S. or Canada today was an M 4.5 in the Andreanof Islands, Aleutians, Alaska. It was not reported felt in this remote area. The last earthquake of significantly larger magnitude in this area of the

Andreanof Islands occurred on March 11, 2023 with M 4.6 and April 12, 2022 with M 4.9. The strongest earthquake in the area in the past 3 years was an M 6.1 on September 24, 2021 and an M 6.1 on January 3, 2021. Today's event may have been promoted by the M 5.7 South of Africa near the antipode on May 29. At the time this summary noted this antipodal relation as:

 

 

"The earthquake of M 5.7 South of Africa today is near the antipode of the Andreanof Islands, Alaska at 53N 170W. A moderate far-field earthquake in the

Andreanof Islands near the this antipode is likely in the next several days." (May 29, 2023)

 

Forecast 153809 had expected today's event within about 100 was likely in early

June, 2023.

 

O:  1JUN2023 11:47:15  51.2N  178.5W mb=4.5  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P:  5JUN2023 153809    50.6N  179.2W 3.5-5.1 BAAAA  Andreanoff Isls, Aleutians 

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O:  1JUN2023 18:12:18  36.5N   70.8E mb=4.4  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  4JUN2023 153725    36.0N   72.0E 3.8-5.2 BAAAA  Hindu Kush/Pakistan        

 

O:  1JUN2023 16:00:14  40.9N   79.3E mb=4.3  EMSC   SOUTHERN XINJIANG, CHINA     

P: 29MAY2023 153463    39.0N   78.0E 3.8-5.3 ABAAA  Northern India             

 

O:  1JUN2023 22:15:01  51.1N  157.0E mb=4.3  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  7JUN2023 153818    51.0N  156.0E 4.0-5.7 CAAAA  Kamchatka                  

 

INDONESIA AND PHILIPPINES

 

O:  1JUN2023 09:50:13   3.6N  127.8E ML=4.1  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 31MAY2023 153629     3.0N  129.0E 4.0-5.4 AAAAA  Halmahera                  

 

O:  1JUN2023 23:47:59   3.8S  101.4E mb=4.3  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  1JUN2023 153654     4.0S  103.0E 4.0-5.4 AABAA  So. of Sumatera            

 

O:  2JUN2023 01:29:27   4.2S  143.7E ML=4.8  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 30MAY2023 153651     5.0S  144.0E 4.0-5.4 AAAAA  Papua New Guinea           

 

O:  1JUN2023 21:38:56   5.3N  126.0E mb=4.5  EMSC   MINDANAO, PHILIPPINES        

P: 26MAY2023 153357     5.0N  126.0E 4.0-5.4 CAAAA  Mindanao, Philippines      

 

O:  1JUN2023 19:43:43   5.4S  142.7E ML=4.6  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 30MAY2023 153651     5.0S  144.0E 4.0-5.4 AABAA  Papua New Guinea           

 

O: 01JUN2023 20:55:25   5.7S  151.9E mb=4.6  EMSC   NEW BRITAIN REGION, P.N.G.

O: 01JUN2023 08:40:43   5.8S  152.4E mb=4.6  EMSC   NEW BRITAIN REGION, P.N.G.

O: 01JUN2023 10:00:13   5.8S  152.0E mb=4.9  EMSC   NEW BRITAIN REGION, P.N.G.

O: 01JUN2023 15:27:27   5.9S  152.1E mb=4.6  EMSC   NEW BRITAIN REGION, P.N.G.

O:  1JUN2023 08:49:06   5.7S  152.0E mb=4.9  EMSC   NEW BRITAIN REGION, P.N.G.   

O:  1JUN2023 11:01:01   5.7S  152.1E mb=4.8  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 31MAY2023 153644     6.0S  152.0E 4.0-5.4 AAAAA  New Britain                

 

O:  1JUN2023 21:03:04   6.6S  127.9E ML=4.4  EMSC   BANDA SEA                    

P:  4JUN2023 153635     7.0S  128.0E 4.0-5.5 BAAAA  Banda Sea                  

 

O:  1JUN2023 23:33:42   7.1S  129.3E mb=4.4  EMSC   KEPULAUAN BABAR, INDONESIA   

O: 01JUN2023 07:42:30   7.0S  129.5E mb=4.4  EMSC   BANDA SEA

P:  1JUN2023 153635     8.0S  129.0E 4.0-5.4 AAAAA  Banda Sea                   

 

O:  2JUN2023 05:25:37  12.5N  144.8E mb=5.2  EMSC   GUAM REGION                  

O:  2JUN2023 05:25:37  12.5N  144.8E mb=5.3  ANSS   GUAM REGION                  

P:  7JUN2023 153688    12.0N  144.0E 4.0-5.4 BAAAA  So. Marianas/Guam          

P: 28MAY2023 153409    13.0N  144.0E 4.0-5.4 BAAAA  So. Marianas/Guam          

 

O:  1JUN2023 22:51:26  18.3N  146.7E mb=4.6  EMSC   PAGAN REG., N. MARIANA ISLANDS

P:  1JUN2023 153682    18.0N  145.0E 4.0-5.4 AABAA  No. Marianas               

P: 29MAY2023 153403    18.0N  148.0E 4.0-5.4 AAAAA  No. Marianas               

 

 

CENTRAL AND SOUTH AMERICA

 

O:  1JUN2023 09:13:21   5.7S   77.1W ML=4.4  EMSC   NORTHERN PERU                

P:  6JUN2023 153648     6.0S   76.0W 4.0-5.7 BAAAA  No. Peru                    

 

O:  1JUN2023 10:02:09  14.7N   90.6W mb=4.6  EMSC   GUATEMALA                    

P: 30MAY2023 153391    14.0N   91.0W 3.5-5.1 AAAAA  Guatemala                  

 

O: 02JUN2023 04:03:25  15.0N   94.1W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 01JUN2023 07:53:20  15.7N   94.0W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO

O:  2JUN2023 01:26:27  15.7N   94.0W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  1JUN2023 153667    17.0N   95.0W 3.5-5.1 ABAAA  Chiapas, Mexico            

 

O:  1JUN2023 21:05:30  15.9N   97.1W ML=4.1  EMSC   OAXACA, MEXICO               

P:  2JUN2023 153684    16.0N   96.0W 3.5-5.6 AAAAA  Oaxaca, Mexico             

 

O:  1JUN2023 19:34:52  17.6N   98.7W ML=4.0  EMSC   GUERRERO, MEXICO             

P:  1JUN2023 153685    18.0N   99.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 02JUN2023 02:08:10  18.1N   93.7W ML=4.0  EMSC   TABASCO, MEXICO

O:  2JUN2023 00:29:34  18.0N   93.6W ML=4.1  EMSC   TABASCO, MEXICO              

P:  4JUN2023 153666    16.0N   93.0W 3.5-5.3 ABAAA  Chiapas, Mexico            

 

O:  1JUN2023 23:54:47  19.2N  107.4W ML=4.0  EMSC   OFF COAST OF JALISCO, MEXICO 

P:  2JUN2023 153669    19.0N  109.0W 3.5-5.3 AABAA  Coast of Jalisco, Mexico   

 

O:  2JUN2023 00:06:00  19.4N   67.1W Md=3.4  EMSC   PUERTO RICO REGION           

P:  4JUN2023 153691    20.0N   68.0W 3.0-4.6 AAAAA  Bahamas/No. Caribbean      

 

O:  2JUN2023 05:43:38  19.7N   65.7W Md=3.8  EMSC   PUERTO RICO REGION           

P:  4JUN2023 153690    20.0N   64.0W 3.0-4.9 AABAA  Bahamas/No. Caribbean      

 

O:  1JUN2023 16:00:50  19.8N  109.2W mb=4.0  EMSC   REVILLA GIGEDO ISLANDS REGION

P:  2JUN2023 153669    19.0N  109.0W 3.5-5.3 AAAAA  Coast of Jalisco, Mexico   

P: 30MAY2023 153415    20.0N  109.0W 3.5-4.9 AAAAA  Gulf of California          

 

O:  1JUN2023 22:32:54  23.9S   66.8W ML=4.1  EMSC   JUJUY, ARGENTINA             

P: 30MAY2023 153586    24.0S   66.0W 4.0-5.8 AAAAA  Argentina                  

 

O:  1JUN2023 18:29:44  27.8N  111.7W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 30MAY2023 153694    25.0N  113.0W 3.5-5.0 ACAAA  Gulf of California         

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O:  1JUN2023 22:52:44  11.6S  166.5E Mw=5.4  EMSC   SANTA CRUZ ISLANDS           

P:  4JUN2023 153858    11.0S  164.0E 4.0-5.4 BACAA  Vanuatu Islands            

 

O:  2JUN2023 04:31:31  23.9S  171.9E Mw=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P:  4JUN2023 153864    22.0S  171.0E 4.0-5.5 ABAAA  Loyalty Islands             

 

OCEAN RIDGES

 

O:  2JUN2023 02:24:17  33.4N   17.5W mb=4.2  EMSC   MADEIRA ISLANDS, PORTUGAL REGI

 

O:  2JUN2023 06:30:06  72.5N    4.2E Mw=3.8  EMSC   NORWEGIAN SEA                

P: 31MAY2023 153843    72.0N    0.0E 3.0-4.6 AAAAA  Norway                      

 

O:  1JUN2023 15:21:37  74.7N    8.9E Mw=3.5  EMSC   GREENLAND SEA                

P:  1JUN2023 153843    74.0N   14.0E 3.0-4.4 AAAAA  Norway                     

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  1JUN2023 18:17:08  33.7S  179.1E ML=4.6  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  7JUN2023 153881    32.0S  178.0E 4.0-5.4 CBAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O:  1JUN2023 13:28:54  29.3N  142.2E mb=4.5  EMSC   IZU ISLANDS, JAPAN REGION    

P:  1JUN2023 153693    28.0N  142.0E 4.0-5.4 BAAAA  Bonin Islands              

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 01JUN2023 19:42:00  30.8N  116.3W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 01JUN2023 10:49:30  30.9N  116.2W ML=3.4  EMSC   FFSHORE BAJA CALIFORNIA, MEXICO

O: 02JUN2023 06:17:55  30.9N  116.2W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O:  1JUN2023 08:33:06  30.8N  116.3W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P:  4JUN2023 153743    31.9N  116.3W 2.5-4.7 BBAAA  So. California             

 

O:  2JUN2023 02:52:01  34.3N  117.0W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P:  3JUN2023 153750    34.3N  117.5W 2.5-4.5 AAAAA  So. California              

 

O:  1JUN2023 16:58:11  35.6N  118.3W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P:  1JUN2023 153751    35.7N  118.1W 2.5-4.9 AAAAA  So. California             

 

O:  1JUN2023 16:31:14  36.5N  120.9W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P:  5JUN2023 153716    36.4N  121.0W 2.5-4.5 BAAAA  Central California         

 

O:  2JUN2023 06:58:02  37.3N  117.6W ml=2.6  EMSC   NEVADA                       

P:  3JUN2023 153710    37.2N  117.3W 2.5-4.7 AAAAA  California/Nevada area     

 

O:  1JUN2023 12:07:53  38.8N  122.7W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P:  5JUN2023 153717    38.9N  122.8W 2.5-4.6 BAAAA  Central California         

 

O: 01JUN2023 12:28:03  40.2N  121.1W Md=2.4  EMSC   NORTHERN CALIFORNIA

O:  2JUN2023 04:33:19  40.2N  121.2W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P:  2JUN2023 153792    40.0N  121.0W 2.5-4.7 AAAAA  Northern California        

 

O:  1JUN2023 08:57:11  40.5N  124.7W ML=2.8  EMSC   OFFSHORE NORTHERN CALIFORNIA 

O: 01JUN2023 12:03:36  40.5N  124.4W Md=2.3  EMSC   OFFSHORE NORTHERN CALIFORNIA

P:  4JUN2023 153793    40.6N  124.9W 2.5-4.6 BAAAA  Off Coast of No. Calif     

 

 

NEIC reported this earthquake of M 3.0 off the coast of Northern California  was felt with intensity II-III in the area(s) of  Northern California in Ferndale, Fortuna, Eureka and Arcata.

 

O: 02JUN2023 00:28:07  39.6N  120.0W ML=3.0  EMSC   NEVADA

O: 02JUN2023 01:41:34  39.6N  120.0W ml=2.2  EMSC   NEVADA

O: 02JUN2023 01:41:34  39.6N  120.0W ml=2.2  EMSC   NEVADA

O:  2JUN2023 00:23:05  39.6N  120.0W Mw=3.8  EMSC   NEVADA                       

P:  2JUN2023 153768    40.2N  119.6W 2.5-4.4 AAAAA  California/Nevada area     

P: 27MAY2023 153438    39.3N  120.0W 2.5-4.5 BAAAA  California/Nevada area     

 

ALASKA

 

O:  1JUN2023 11:47:15  51.2N  178.5W mb=4.5  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P:  5JUN2023 153809    50.6N  179.2W 3.5-5.1 BAAAA  Andreanoff Isls, Aleutians 

 

O:  1JUN2023 15:29:44  52.7N  163.0W ML=3.1  EMSC   SOUTH OF ALASKA              

P:  4JUN2023 153828    54.3N  161.4W 3.5-5.0 BBAAA  Unimak Islands, Aleutians  

 

O:  1JUN2023 09:41:09  59.5N  151.9W ML=3.1  EMSC   KENAI PENINSULA, ALASKA      

P:  3JUN2023 153831    60.0N  153.5W 3.2-5.3 AAAAA  Central Alaska             

 

O:  2JUN2023 00:04:47  61.2N  152.0W ML=3.0  EMSC   SOUTHERN ALASKA              

P:  3JUN2023 153833    61.3N  150.9W 3.2-5.1 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  2JUN2023 04:37:52  52.9N  132.8W ML=2.9  EMSC   QUEEN CHARLOTTE ISLANDS REGION

O: 01JUN2023 20:25:11  53.2N  132.8W ML=2.6  EMSC   QUEEN CHARLOTTE ISLANDS REGION

P: 29MAY2023 153538    53.0N  132.0W 3.0-5.1 BAAAA  British Colombia           

 

O: 01JUN2023 13:03:19  54.5N  118.5W MB=3.1  ECAN of Grande Prairie, AB  

O:  1JUN2023 13:03:19  54.5N  118.5W ML=3.1  EMSC   ALBERTA, CANADA              

P:  1JUN2023 153808    56.0N  120.0W 2.0-4.2 BAAAA  Alberta                    

 

O:  1JUN2023 15:03:04  50.5N  130.3W MB=3.7  ECAN of Port Hardy, BC              

P:  3JUN2023 153803    49.9N  130.2W 2.8-5.2 AAAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 01JUN2023 10:49:45  31.7N  104.4W ML=2.0  EMSC   WESTERN TEXAS

O:  2JUN2023 03:28:31  31.7N  104.4W ML=2.1  EMSC   WESTERN TEXAS                

P:  4JUN2023 153742    31.4N  103.8W 2.0-3.9 AAAAA  SW U.S.A                   

 

O:  1JUN2023 18:55:44  37.3N  104.5W ML=3.4  EMSC   COLORADO                     

P:  5JUN2023 153720    36.9N  105.1W 2.0-4.4 BAAAA  Colorado area              

 

NEIC reported this earthquake of M 3.4 in Southern Colorado was felt with intensity II-III in the area(s) of Southern Colorado in Trinidad.

 

O:  1JUN2023 18:46:14  44.8N  110.4W Ml=2.0  EMSC   YELLOWSTONE NAT. PARK, WYOMING

P: 30MAY2023 153805    44.6N  110.8W 2.0-3.9 AAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O: 02JUN2023 02:15:37  36.3N   97.7W mb=2.6  EMSC   OKLAHOMA

O:  1JUN2023 07:05:26  35.1N   97.6W ML=2.2  EMSC   OKLAHOMA                     

P:  3JUN2023 153757    36.0N   97.0W 2.0-3.9 AAAAA  Southeast U.S.              

 

O:  1JUN2023 07:35:12  46.8N   79.2W MB=1.9  ECAN of T├⌐miscaming, QC            

P: 28MAY2023 153520    49.0N   81.0W 2.0-4.1 BCBAA  Ohio/Lake Erie             

 

HAWAII

 

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

 

MODERATELY STRONG QUAKE IN MYANMAR

 

EARTHQUAKE SUMMARY FOR MAY 31, 2023

 

 

The strongest earthquake in the world today was an M 5.8 in Myanmar. NEIC reported it was felt with intensity V in Myanmar at Katha Sagaing and III in Mandalay with II in Dulia Gaon, Assam, India. This is the strongest earthquake in Myanmar within about 200 km of this epicenter since an M 5.8 on May 23 and an M 5.9 nine years ago on May 30, 2014.

 

Forecast 153420 had expected this event within Myanmar within about 100 km was likely around May 26, 2023. A strong tropical storm passed over this epicenter in May, 2023 and may have helped set this earthquake up. In the previous issue of this summary this had been alluded to as:

 

 

"Another recent typhoon landfall has occurred in the Bay of Bengal in the area of India and Myanmar. This Tropical Cyclone was described in past issues of this summary as:

 

"TC Mocha (01B) formed today in the area south of Myanmar and Bangladesh in the Gulf of Bengal with winds up to 130 kts.  It is expected to continue north and to make landfall in the next two days in India, Bangladesh  and Myanmar. Considerable damage is expected with winds up to 130 kts. Seismicity in Southeast Asia is likely to be enhanced while this storm is active." (May 15-16, 2023)

 

It is possible this area of Assam, India and Myanmar could still see a weather-related moderate event in the next several days. A series of moderate events have occurred in Assam, India in the past week perhaps indicating a larger event is possible." (May 30, 2023)

 

O: 31MAY2023 11:20:16  25.1N   96.2E Mw=5.8  EMSC   MYANMAR                      

P: 26MAY2023 153420    25.0N   95.0E 4.0-5.4 BAAAA  Myanmar                    

 

An M 5.5 was also lightly felt in Kamchatka today. This continues a series of moderate quakes in Kamchatka that began in early to mid-April, 2023 with an M 6.7 on April 3 and an M 5.6 on April 18 but is to the northeast of those epicenters by about 400 km. The only earthquake within about 250 km of today's epicenter with equal or greater magnitude was an M 6.6 about 100 km south of this on March 16, 2021. Forecast 153542 had expected today's event within about 50 km was likely around May 27.

 

O: 31MAY2023 14:01:46  55.4N  163.2E Mw=5.5  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 27MAY2023 153542    55.0N  163.0E 4.0-5.7 BAAAA  Komandorsky Isl            

 

An earthquake of M 3.9 occurred today off the coast of Northern California. NEIC reported it was felt with intensity II in Fortuna, Eureka and Arcata, California. This appears to be an aftershock of the M 5.6 off northern California of May 21, 2023. At the time this summary noted in this regard:

 

"The strongest earthquake in the U.S. or Canada today was an M 5.6 off the coast of Northern California. NEIC reported it was felt with maximum intensity VI in California at Petrolia and II-III in Ferndale, Loleta, Rio Del, Fortuna, Samoa, Hydesville, Eureka, Scotia, and as far as the coast of Oregon and Central California. This is near the antipode of the M 6.8 in the Prince Edward Islands which  occurred several hours earlier in the day. Triggering associated with that event possible.     This event is near the fourth node (90 degrees) from the major activity in the Loyalty Islands of the past three days and continues a regional activation of seismicity in California associated with the Loyalty Islands near the fourth node" (May 21, 2023)

 

Today's earthquake occurred with minutes of local solar noon and was probably promoted by tidal stresses which maximize near this hour.

 

Forecasts 153518 had expected today's event was likely within about 25 km around

May 29.

 

O: 01JUN2023 00:25:27  40.5N  124.9W Md=2.2  EMSC   OFFSHORE NORTHERN CALIFORNIA

O: 31MAY2023 19:59:39  40.4N  125.6W Mw=3.9  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 29MAY2023 153518    40.5N  125.8W 2.5-4.4 AAAAA  Off Coast of No. Calif     

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:  1JUN2023 00:44:38  36.8N   71.5E mb=4.3  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  4JUN2023 153725    36.0N   72.0E 3.8-5.2 BAAAA  Hindu Kush/Pakistan        

 

O: 31MAY2023 07:12:48  40.3N   77.3E mb=4.3  EMSC   SOUTHERN XINJIANG, CHINA     

P: 29MAY2023 153463    39.0N   78.0E 3.8-5.3 ABAAA  Northern India             

 

O:  1JUN2023 03:21:14  41.8N   71.8E mb=4.8  EMSC   KYRGYZSTAN                   

P:  2JUN2023 153778    41.0N   73.0E 4.0-5.4 AAAAA  Kirgizstan/Xinjiang        

 

O:  1JUN2023 06:06:35  47.4N   93.2E mb=4.0  EMSC   WESTERN MONGOLIA             

P: 31MAY2023 153825    50.0N   88.0E 3.0-4.6 ACCAA  So. Siberia                

 

O: 31MAY2023 14:01:46  55.4N  163.2E Mw=5.5  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 27MAY2023 153542    55.0N  163.0E 4.0-5.7 BAAAA  Komandorsky Isl            

 

O: 31MAY2023 11:20:16  25.1N   96.2E Mw=5.8  EMSC   MYANMAR                      

P: 26MAY2023 153420    25.0N   95.0E 4.0-5.4 BAAAA  Myanmar                    

 

INDONESIA AND PHILIPPINES

 

O: 31MAY2023 21:56:38   3.6S  128.3E Mw=5.2  EMSC   SERAM, INDONESIA             

P: 25MAY2023 153364     3.0S  129.0E 4.0-5.4 CAAAA  Ceram area                 

 

O: 01JUN2023 03:51:10   5.8S  152.0E mb=4.9  EMSC   NEW BRITAIN REGION, P.N.G.

O:  1JUN2023 00:05:16   5.8S  152.0E mb=5.3  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 31MAY2023 153644     6.0S  152.0E 4.0-5.4 AAAAA  New Britain                

 

O: 31MAY2023 13:00:40  10.8S  113.2E ML=4.1  EMSC   SOUTH OF JAVA, INDONESIA     

P:  1JUN2023 153854    11.0S  115.0E 4.0-5.4 AABAA  So. of Indonesia           

 

CENTRAL AND SOUTH AMERICA

 

O: 31MAY2023 10:55:18   1.5N   90.6W mb=5.0  EMSC   GALAPAGOS ISLANDS REGION     

P: 31MAY2023 153628     1.0N   91.0W 3.5-5.1 AAAAA  Galapagos Islands          

 

O:  1JUN2023 04:03:29   8.3S   74.3W ML=4.2  EMSC   CENTRAL PERU                 

P: 27MAY2023 153362     9.0S   75.0W 3.5-5.1 BAAAA  Brazil                     

 

O:  1JUN2023 05:27:22   9.1S   79.3W ML=4.0  EMSC   OFF COAST OF NORTHERN PERU   

P:  2JUN2023 153648     8.0S   78.0W 4.0-5.7 ABAAA  No. Peru                   

 

O:  1JUN2023 04:14:31  10.7S   77.1W ML=4.1  EMSC   NEAR COAST OF CENTRAL PERU   

P: 29MAY2023 153570    11.0S   74.0W 4.0-5.5 AACAA  Central Peru               

 

O: 31MAY2023 22:52:40  15.8N   93.9W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 31MAY2023 14:42:44  16.6N   94.2W ML=4.0  EMSC   OAXACA, MEXICO

O: 31MAY2023 09:26:29  14.2N   94.0W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 30MAY2023 153405    15.0N   96.0W 3.5-5.6 AABAA  Oaxaca, Mexico             

 

O: 31MAY2023 20:23:50  14.9N   60.5W ML=3.6  EMSC   MARTINIQUE REGION, WINDWARD IS

P: 29MAY2023 153394    15.0N   60.0W 3.0-5.1 AAAAA  Leeward Islands             

 

O: 31MAY2023 08:30:28  15.3N   95.6W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  2JUN2023 153684    16.0N   96.0W 3.5-5.6 AAAAA  Oaxaca, Mexico             

 

O: 31MAY2023 18:30:21  15.7N   92.6W ML=4.1  EMSC   CHIAPAS, MEXICO              

P:  4JUN2023 153666    16.0N   93.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O:  1JUN2023 00:15:17  15.8N   93.9W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  4JUN2023 153666    16.0N   93.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O: 31MAY2023 09:04:21  17.0N   99.8W ML=4.0  EMSC   GUERRERO, MEXICO

O: 31MAY2023 21:18:22  16.9N  100.1W ML=4.2  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  1JUN2023 153685    18.0N   99.0W 3.5-5.3 ABAAA  Oaxaca, Mexico             

 

O: 31MAY2023 15:04:35  17.7N  103.5W ML=4.1  EMSC   OFFSHORE MICHOACAN, MEXICO   

P: 27MAY2023 153399    18.0N  103.0W 3.5-5.3 BAAAA  Michoacan, Mexico          

 

O: 31MAY2023 14:22:09  18.2N   68.6W Md=3.9  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P: 28MAY2023 153407    18.0N   68.0W 3.4-5.4 BAAAA  Puerto Rico                

P: 30MAY2023 153691    20.0N   69.0W 3.0-4.4 ABAAA  Bahamas/No. Caribbean      

 

O: 31MAY2023 09:05:49  19.7N   65.7W Md=4.0  EMSC   PUERTO RICO REGION

O:  1JUN2023 02:33:32  19.6N   65.7W Md=4.0  EMSC   PUERTO RICO REGION           

P:  1JUN2023 153674    18.0N   64.0W 3.0-5.5 AABAA  Leeward Islands            

 

AFRICA AND EUROPE

 

O: 31MAY2023 10:10:11  45.8N   26.8E ML=3.4  EMSC   ROMANIA                      

P: 26MAY2023 153526    46.0N   27.0E 3.0-5.1 BAAAA  Romania/NW Turkey          

 

O: 31MAY2023 18:37:15  78.4N    7.1E Mw=3.4  EMSC   SVALBARD REGION

O: 31MAY2023 07:34:23  78.4N    7.5E Mw=3.6  EMSC   SVALBARD REGION              

P:  5JUN2023 153843    79.0N    7.0E 4.0-5.5 BAAAA  Arctic Ocean Region         

 

SOUTHWEST PACIFIC

 

O: 31MAY2023 12:29:11   9.8S  166.9E mb=4.9  EMSC   SANTA CRUZ ISLANDS           

P:  4JUN2023 153858    11.0S  164.0E 4.0-5.4 BBCAA  Vanuatu Islands            

 

O: 31MAY2023 09:27:58  25.2S  179.7W mb=4.5  EMSC   SOUTH OF FIJI ISLANDS        

P: 25MAY2023 153598    25.0S  179.0W 4.0-5.6 CAAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O: 31MAY2023 10:55:18   1.5N   90.6W mb=5.0  EMSC   GALAPAGOS ISLANDS REGION     

P: 31MAY2023 153628     1.0N   91.0W 3.5-5.1 AAAAA  Galapagos Islands          

 

O: 31MAY2023 08:11:15  56.7S   26.1W mb=4.9  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 30MAY2023 153617    56.0S   28.0W 4.0-5.8 AAAAA  So. Sandwich Islands       

 

O: 31MAY2023 18:37:15  78.4N    7.1E Mw=3.4  EMSC   SVALBARD REGION

O: 31MAY2023 07:34:23  78.4N    7.5E Mw=3.6  EMSC   SVALBARD REGION              

P:  5JUN2023 153843    79.0N    7.0E 4.0-5.5 BAAAA  Arctic Ocean Region         

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 31MAY2023 07:42:32  29.2S  179.2E ML=4.5  EMSC   KERMADEC ISLANDS REGION      

O: 31MAY2023 09:29:18  32.2S  178.0E ML=4.2  EMSC   SOUTH OF KERMADEC ISLANDS    

P:  7JUN2023 153881    32.0S  178.0E 4.0-5.4 CAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O:  1JUN2023 02:28:30  29.9N  130.0E ML=4.4  EMSC   RYUKYU ISLANDS, JAPAN        

P:  1JUN2023 153727    30.0N  129.0E 3.5-4.9 AAAAA  Kyushu, Japan area         

P: 30MAY2023 153418    29.0N  131.0E 4.0-5.4 AAAAA  Kyushu Japan               

 

O: 31MAY2023 15:03:30  37.5N  137.4E ML=4.2  EMSC   NEAR WEST COAST OF HONSHU, JAP

P: 31MAY2023 153733    37.0N  139.0E 3.5-4.9 AAAAA  No. Honshu, Japan          

 

O: 31MAY2023 15:03:30  38.7N  142.3E ML=4.4  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 28MAY2023 153465    38.0N  141.0E 4.0-5.4 BAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 31MAY2023 20:54:25  30.8N  116.3W ML=3.1  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 31MAY2023 18:54:22  30.9N  116.2W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO

O: 31MAY2023 20:35:45  30.9N  116.1W ML=3.8  EMSC   BAJA CALIFORNIA, MEXICO

O: 31MAY2023 20:28:44  30.8N  116.3W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 29MAY2023 153471    31.0N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 31MAY2023 21:12:20  31.7N  116.3W ML=2.9  EMSC   BAJA CALIFORNIA, MEXICO      

P: 30MAY2023 153743    32.0N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 31MAY2023 14:56:04  32.2N  115.2W Ml=2.3  EMSC   BAJA CALIFORNIA, MEXICO      

P: 30MAY2023 153743    32.0N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 31MAY2023 07:42:26  33.2N  115.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P:  3JUN2023 153746    32.9N  115.6W 2.5-4.6 AAAAA  So. California             

 

O: 31MAY2023 09:25:35  33.8N  118.2W Ml=2.2  EMSC   GREATER LOS ANGELES AREA, CALIF.

O: 01JUN2023 02:15:55  33.9N  118.2W ML=2.8  EMSC   GREATER LOS ANGELES AREA, CALIF.

O: 31MAY2023 08:54:04  33.8N  118.2W Ml=2.0  EMSC   GREATER LOS ANGELES AREA, CALI

P:  1JUN2023 153749    34.0N  118.7W 2.5-4.6 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.5 in Long Beach, California was felt with intensity II-III in the area(s) of Long Beach, California in Signal Hill, Lakewood and Long Beach.

 

O: 31MAY2023 23:27:27  34.0N  116.6W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 31MAY2023 15:07:26  33.9N  116.9W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 29MAY2023 153475    33.7N  117.5W 2.5-4.8 AAAAA  So. California             

 

O: 31MAY2023 23:38:46  36.3N  115.3W ml=2.1  EMSC   LAS VEGAS URBAN AREA, NEVADA 

P:  5JUN2023 153712    37.8N  115.8W 2.5-4.9 BBAAA  California/Nevada area     

 

O: 31MAY2023 07:44:11  36.4N  117.9W ML=2.1  EMSC   CENTRAL CALIFORNIA           

P:  1JUN2023 153709    36.1N  118.1W 2.5-4.9 AAAAA  California/Nevada area     

 

O: 31MAY2023 23:21:37  37.5N  121.3W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 26MAY2023 153442    37.8N  122.6W 2.5-4.4 BAAAA  Central California         

 

O: 31MAY2023 14:05:51  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 31MAY2023 153717    38.9N  122.8W 2.5-4.6 AAAAA  Central California         

 

O: 31MAY2023 10:31:36  40.4N  123.8W Md=2.0  EMSC   NORTHERN CALIFORNIA           

P:  4JUN2023 153792    40.6N  122.4W 2.5-4.8 BAAAA  Northern California        

 

O: 01JUN2023 00:25:27  40.5N  124.9W Md=2.2  EMSC   OFFSHORE NORTHERN CALIFORNIA

O: 31MAY2023 19:59:39  40.4N  125.6W Mw=3.9  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 29MAY2023 153518    40.5N  125.8W 2.5-4.4 AAAAA  Off Coast of No. Calif     

 

ALASKA

 

O: 31MAY2023 08:27:22  50.8N  176.9E ML=3.0  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  3JUN2023 153823    51.0N  177.0E 4.0-5.8 BAAAA  Rat Islands                

P: 30MAY2023 153548    52.0N  176.0E 4.0-5.8 ABAAA  Rat Islands                

 

O: 31MAY2023 12:24:23  54.3N  159.7W mb=3.7  EMSC   SOUTH OF ALASKA              

P:  3JUN2023 153807    54.8N  158.7W 3.5-5.3 BAAAA  Alaska Peninsula           

 

O:  1JUN2023 06:20:30  67.4N  163.8W mb=3.5  EMSC   NORTHERN ALASKA              

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 31MAY2023 18:11:49  65.0N  134.0W MB=3.9  ECAN of Keno, YT   

O: 31MAY2023 18:11:49  65.0N  134.0W ML=3.9  EMSC   NORTHERN YUKON TERRITORY, CANA

P:  5JUN2023 153839    64.0N  133.0W 2.5-4.2 BAAAA  Yukon Territory, Canada    

 

ROCKY MOUNTAINS REGION

 

O: 31MAY2023 08:46:40  31.6N  104.3W ML=2.1  EMSC   WESTERN TEXAS

O: 31MAY2023 14:45:25  31.7N  104.3W ML=2.1  EMSC   WESTERN TEXAS

O: 31MAY2023 15:53:23  31.7N  104.3W ML=2.1  EMSC   WESTERN TEXAS

O: 31MAY2023 08:27:53  31.6N  104.2W ML=2.1  EMSC   WESTERN TEXAS                

P:  4JUN2023 153742    31.4N  103.8W 2.0-3.9 AAAAA  SW U.S.A                   

 

O: 31MAY2023 14:10:41  32.8N  100.7W mb=3.0  EMSC   WESTERN TEXAS

O: 31MAY2023 10:07:55  32.8N  100.7W ML=2.0  EMSC   WESTERN TEXAS                

P:  5JUN2023 153742    35.4N  101.8W 2.0-3.9 BCAAA  SW U.S.A                   

 

O: 31MAY2023 07:29:02  44.8N  110.4W Ml=2.3  EMSC   YELLOWSTONE NAT. PARK, WYOMING

P: 30MAY2023 153805    44.6N  110.8W 2.0-3.9 AAAAA  Yellowstone/Wyoming        

 

O: 31MAY2023 19:05:21  46.0N  112.5W Ml=2.0  EMSC   WESTERN MONTANA              

P:  3JUN2023 153781    44.9N  113.4W 2.0-3.9 BBAAA  Montana/Idaho               

 

EASTERN U.S./CANADA

 

O: 31MAY2023 10:04:37  43.4N   71.8W mb=2.2  EMSC   NEW HAMPSHIRE                

O: 31MAY2023 10:04:38  43.4N   71.8W MB=2.5  ECAN of Concord, NH   

P:  1JUN2023 153786    45.0N   73.0W 2.0-4.6 ABAAA  New England                 

 

O:  1JUN2023 01:08:28  46.6N   75.6W MB=1.9  ECAN of Mont-Laurier, QC            

P: 30MAY2023 153789    46.0N   74.0W 2.0-4.3 AAAAA  New York State             

 

HAWAII

 

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

 

STRONG QUAKE SOUTH OF NEW ZEALAND IN SNARES ISLAND

 

EARTHQUAKE SUMMARY FOR MAY 30, 2023

 

The largest earthquake in the world today was an M 6.1-6.2 in Auckland, New Zealand. NEIC reported it was lightly felt with intensity II in New Zealand in Southland at Riverton, Invercargill and Gore. GEONET reported this earthquake in Snares Island, New Zealand was felt by 1 with 1 reporting weak intensity and 0 light intensity. This earthquake occurred new local solar noon and may have been promoted by tidal stresses which maximize near this hour. The last earthquake in the Snares Island within about 200 km of today's epicenter with larger or equal magnitude occurred on July 11, 2017 with M 6.6. At the time this summary noted in this regard:

 

"The last earthquake with M>=6.5 in the region occurred on September 30, 2007 with an M 7.4 and 6.6 ten years ago. A great earthquake hit the region December 23, 2004, two days before the great tsunamigenic Sumatra earthquake which caused more than 200,000 deaths around the Indian Ocean." (July 11, 2017) ...

 

Forecast 153885 had expected this event in this region was likely around June 1, 2023. This epicenter is located near 144 degrees from the M 7.7 in Turkey of February 6, 2023 at 104 degrees from the M 6.7 in Ecuador of March 18  and may have been promoted by energy from those sources.

 

O: 31MAY2023 02:21:19  49.9S  163.9E ML=6.1  GEONET Snares Island, New Zealand

O: 31MAY2023 02:21:21  49.6S  163.9E Mw=6.2  EMSC   AUCKLAND ISLANDS, N.Z. REGION

O: 31MAY2023 02:21:21  49.6S  163.9E Mw=6.2  ANSS   AUCKLAND ISLANDS, N.Z. REGION

P:  1JUN2023 153885    47.0S  164.0E 3.0-5.0 ACAAA  So. Island, N.Z.           

 

A moderate earthquake was also felt in northern Chile today. NEIC reported this earthquake of M 5.5 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile in Iquique with V, and in Arica and in Tocopilla, Antofagasta. The last earthquake in Tarapaca, Chile with M>=5.4 within about 200 km of today's epicenter occurred as an M 6.1 on December 6, 2020, the only such event in this area in at least three years. Today's event occurred within minutes of local solar noon and was probably promoted by tidal stresses which maximize near this hour. The M 6.1 on December 6, 2020 shared this timing occurring at 16:48 UT at solar noon as noted in this summary on that date:

 

 

"The strongest earthquake in the world today was an M 6.1 in northern Chile. It was reported with maximum intensity VI in Iquique, Tarapaca and V in Tocopilla, Antofagasta and IV in Calama and Arica, Antofagasta and Arequipa. ... This continues strong activity in the region over the past week. The last earthquakes in northern Chile of M>=6.1 occurred on September 11, 2020 and prior to that on November 1, 2018. A major event of M 7.6 hit the area on April 3, 2014 after an M 8.2 to the north on April 1, 2014. Today's event is about 150 km east of those epicenters. This event occurred within several minutes of local solar noon and was probably promoted by high tidal stresses which maximize at this hour." (December 7, 2020)

 

Forecasts 153870, 153588 and 153863 had expected today's event within about

100 km was likely at the end of May or in early June, 2023. This epicenter is at 144 degrees from the M 7.2 in Tajikistan of February 23, and at 105 degrees from the M 7.7 in the Loyalty Islands of May 19, 2023 and may have been promoted by energy from those sources.

 

O: 30MAY2023 16:51     20.7S   70.6W mb=5.4  GUC    Tarapaca at Alto Hospicio and

O: 30MAY2023 16:51:37  20.7S   70.5W Mw=5.5  EMSC   OFFSHORE TARAPACA, CHILE     

P:  1JUN2023 153870    20.0S   69.0W 4.0-6.1 AAAAA  So. Peru/Bolivia           

P: 30MAY2023 153588    21.0S   69.0W 4.0-5.8 AAAAA  Coast No. Chile            

P: 30MAY2023 153863    21.0S   69.0W 4.0-5.8 AAAAA  Coast No. Chile             

 

An unusual M 5.1 earthquake also shook the area of Turkmenistan today. The is the strongest earthquake within about 200 km of this epicenter in Turkmenistan since an M 5.1 on March 22, 2023 with the last of larger magnitude an M 5.3-5.4 on May 16 and again on 17, 2021. Forecast 153777 had expected this event was likely within about 25 km around June 1, 2023.

 

O: 31MAY2023 04:04:49  39.7N   55.0E mb=5.1  EMSC   TURKMENISTAN                 

P:  1JUN2023 153777    40.0N   55.0E 4.0-5.4 AAAAA  Kazakhstan                 

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: 31MAY2023 04:04:49  39.7N   55.0E mb=5.1  EMSC   TURKMENISTAN                 

P:  1JUN2023 153777    40.0N   55.0E 4.0-5.4 AAAAA  Kazakhstan                 

 

O: 30MAY2023 17:45:42  38.6N   73.1E mb=4.5  EMSC   TAJIKISTAN                   

P: 26MAY2023 153451    38.0N   73.0E 3.8-5.3 BAAAA  Hindu Kush/Pakistan        

 

O: 30MAY2023 20:00:54  52.5N  159.7E mb=4.0  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 31MAY2023 153814    53.0N  160.0E 4.0-5.6 AAAAA  E. of Kamchatka            

 

O: 31MAY2023 10:48:03  22.4N  121.1E ML=4.3  TAI    Hualien, Taiwan              

P:  5JUN2023 153705    23.0N  123.0E 4.0-5.4 BABAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity II in Pingtung and Taitung Counties, Taiwan.

 

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

 

INDONESIA AND PHILIPPINES

 

O: 31MAY2023 00:58:41   1.0S   98.6E mb=5.0  EMSC   KEP. MENTAWAI REGION, INDONESI

P:  2JUN2023 153653     2.0S   99.0E 4.0-5.4 AAAAA  So. of Sumatera            

P: 29MAY2023 153359     0.0N   99.0E 4.0-5.5 AAAAA  So. Sumatera               

 

O: 30MAY2023 15:22:36  14.9N  121.8E mb=4.6  EMSC   LUZON, PHILIPPINES           

P: 30MAY2023 153676    16.0N  120.0E 3.5-4.9 ABBAA  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 Southern Tagalog at Malanday (IV), Taytay, Angono, Niogan, Manila, Plaridel, Olongapo.

 

O: 31MAY2023 01:58:06  23.3S  170.8E mb=4.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 27MAY2023 153589    23.0S  172.0E 4.0-5.5 BAAAA  Loyalty Islands            

 

CENTRAL AND SOUTH AMERICA

 

O: 30MAY2023 16:59:55   8.7N   77.4W ML=4.4  EMSC   PANAMA-COLOMBIA BORDER REGION

P: 30MAY2023 153624     9.0N   78.0W 4.0-5.8 AAAAA  Colombia                   

 

O: 30MAY2023 11:39:20   5.2S   77.0W ML=4.1  EMSC   NORTHERN PERU                

P:  6JUN2023 153648     6.0S   76.0W 4.0-5.7 CAAAA  No. Peru                    

 

O: 30MAY2023 19:32:12  16.8N   95.0W ML=4.0  EMSC   OAXACA, MEXICO               

O: 30MAY2023 15:01:28  17.1N   95.1W ML=4.2  EMSC   OAXACA, MEXICO

P:  1JUN2023 153667    17.0N   95.0W 3.5-5.1 AAAAA  Chiapas, Mexico            

 

O: 31MAY2023 05:59:18  17.2N  101.0W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  1JUN2023 153678    18.0N  102.0W 3.5-5.6 AAAAA  Michoacan, Mexico          

P: 30MAY2023 153678    19.0N  101.0W 3.5-5.5 ABAAA  Michoacan, Mexico          

 

O: 30MAY2023 18:14:56  19.7N   65.7W Md=3.7  EMSC   PUERTO RICO REGION           

P: 28MAY2023 153395    18.0N   64.0W 3.0-5.1 ABBAA  Leeward Islands            

 

O: 30MAY2023 16:51:37  20.7S   70.5W Mw=5.5  EMSC   OFFSHORE TARAPACA, CHILE     

P:  1JUN2023 153870    20.0S   69.0W 4.0-6.1 AAAAA  So. Peru/Bolivia           

P: 30MAY2023 153588    21.0S   69.0W 4.0-5.8 AAAAA  Coast No. Chile            

P: 30MAY2023 153863    21.0S   69.0W 4.0-5.8 AAAAA  Coast No. Chile            

 

O: 30MAY2023 18:15:48  35.6S   75.0W ML=4.2  EMSC   OFF COAST OF MAULE, CHILE    

P: 30MAY2023 153875    35.0S   71.0W 4.0-5.7 AACAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O: 30MAY2023 09:05:17  37.7N   35.4E ML=4.5  EMSC   CENTRAL TURKEY               

P:  4JUN2023 153759    38.0N   36.0E 3.5-5.0 BAAAA  Turkey                     

 

O: 30MAY2023 11:20:33  38.5N   37.6E ML=4.0  EMSC   CENTRAL TURKEY               

P:  6JUN2023 153759    38.0N   38.0E 3.5-5.1 CAAAA  Turkey                     

P: 24MAY2023 153488    38.0N   39.0E 3.5-5.1 CAAAA  Turkey                     

 

O: 31MAY2023 04:04:49  39.7N   55.0E mb=5.1  EMSC   TURKMENISTAN                 

P:  1JUN2023 153777    40.0N   55.0E 4.0-5.4 AAAAA  Kazakhstan                 

 

SOUTHWEST PACIFIC

 

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

 

OCEAN RIDGES

 

O: 30MAY2023 11:30:05  57.1S   66.6W mb=4.3  EMSC   DRAKE PASSAGE                

P:  1JUN2023 153890    55.0S   64.0W 3.0-5.4 ABBAA  So. So. America            

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 31MAY2023 02:22:15  46.7S  168.0E ML=4.4  EMSC   OFF W. COAST OF S. ISLAND, N.Z

P:  6JUN2023 153885    46.0S  167.0E 3.0-5.1 CAAAA  Southern S. Isl. N.Z.      

P: 28MAY2023 153613    45.0S  168.0E 3.0-4.9 BBAAA  So. Island, N.Z.           

 

O: 31MAY2023 02:21:21  49.6S  163.9E Mw=6.2  EMSC   AUCKLAND ISLANDS, N.Z. REGION

O: 31MAY2023 02:21:19  49.9S  163.9E ML=6.1  GEONET Snares Island, New Zealand

P:  1JUN2023 153885    47.0S  164.0E 3.0-5.0 ACAAA  So. Island, N.Z.           

 

JAPAN AND KURIL ISLANDS

 

O: 30MAY2023 22:48:56  33.4N  139.3E mb=4.4  EMSC   IZU ISLANDS, JAPAN REGION    

P:  1JUN2023 153737    33.0N  142.0E 4.0-5.5 AABAA  Off East Coast Honshu      

 

O: 30MAY2023 08:49:17  37.5N  137.4E mb=4.6  EMSC   NEAR WEST COAST OF HONSHU, JAP

P: 31MAY2023 153733    37.0N  139.0E 3.5-4.9 AAAAA  No. Honshu, Japan          

 

O: 30MAY2023 13:52:02  37.5N  141.9E mb=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 28MAY2023 153465    38.0N  141.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 30MAY2023 20:24:51  34.0N  119.1W ML=3.2  EMSC   CHANNEL ISLANDS REG., CALIFORN

P:  1JUN2023 153749    34.0N  118.7W 2.5-4.6 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.2 in Los Angeles, California was felt with intensity II-III in the area(s) of Los Angeles, California in Point Mugu Nawc, Oxnard, Port Hueneme, Newbury Park, Camarillo and others.

 

O: 30MAY2023 08:07:54  31.0N  116.6W ML=3.3  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 29MAY2023 153471    31.0N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 30MAY2023 18:37:05  31.2N  115.6W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO

O: 30MAY2023 10:08:28  31.7N  115.1W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO      

P: 29MAY2023 153471    32.4N  115.8W 2.5-4.6 AAAAA  So. California             

 

O: 30MAY2023 08:09:58  32.4N  115.2W Ml=2.3  EMSC   BAJA CALIFORNIA, MEXICO      

P: 29MAY2023 153471    32.4N  115.8W 2.5-4.6 AAAAA  So. California             

 

O: 31MAY2023 05:37:45  33.3N  116.3W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 30MAY2023 07:37:22  33.2N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P:  3JUN2023 153746    32.9N  115.6W 2.5-4.6 BAAAA  So. California             

P: 29MAY2023 153471    32.4N  115.8W 2.5-4.6 AAAAA  So. California             

 

O: 31MAY2023 03:00:51  36.4N  118.2W ML=3.0  EMSC   CENTRAL CALIFORNIA           

O: 31MAY2023 03:00:51  36.4N  118.2W ML=3.2  ANSS   CENTRAL CALIFORNIA           

P:  1JUN2023 153709    36.1N  118.1W 2.5-4.9 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.2 in Central California was felt with intensity II-III in the area(s) of Central California in East Tulare County, Three Rivers, Springville, Kings Canyon National Park and Visalia.

 

O: 31MAY2023 01:58:54  36.6N  121.2W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P:  3JUN2023 153716    36.8N  121.3W 2.5-4.4 BAAAA  Central California         

 

O: 30MAY2023 08:31:38  37.3N  117.6W ml=3.5  EMSC   CENTRAL CALIFORNIA           

P:  3JUN2023 153710    37.2N  117.3W 2.5-4.7 BAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.5 in Central California was felt with intensity II-III in the area(s) of Central California in Fresno.

 

O: 31MAY2023 04:27:57  38.6N  118.5W ml=2.1  EMSC   NEVADA                       

P: 28MAY2023 153435    38.2N  118.8W 2.5-4.6 BAAAA  California/Nevada area     

 

O: 31MAY2023 05:11:59  40.2N  121.1W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P:  2JUN2023 153792    40.0N  121.0W 2.5-4.7 AAAAA  Northern California        

P: 28MAY2023 153516    40.2N  121.2W 2.5-4.5 BAAAA  Northern California        

 

O: 30MAY2023 11:00:13  40.4N  125.4W ML=2.8  EMSC   OFFSHORE NORTHERN CALIFORNIA 

O: 30MAY2023 11:00:13  40.4N  125.4W ML=3.1  ANSS   OFFSHORE NORTHERN CALIFORNIA 

O: 30MAY2023 12:44:22  40.6N  124.3W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P: 29MAY2023 153518    40.5N  125.8W 2.5-4.4 AABAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.1 off the coast of Northern California  was felt with intensity II-III in the area(s) of Northern California in Arcata.

 

 

ALASKA

 

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

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 31MAY2023 06:02:16  54.5N  118.5W MB=3.9  ECAN of Grande Prairie, AB  

O: 31MAY2023 06:02:16  54.5N  118.5W ML=3.9  EMSC   ALBERTA, CANADA              

P:  1JUN2023 153808    56.0N  120.0W 2.0-4.2 ABAAA  Alberta                     

 

ROCKY MOUNTAINS REGION

 

O: 30MAY2023 11:49:29  31.6N  104.2W ML=2.6  EMSC   WESTERN TEXAS

O: 30MAY2023 13:23:30  31.6N  104.3W ML=2.5  EMSC   WESTERN TEXAS                

P: 26MAY2023 153470    31.4N  104.2W 2.0-4.1 BAAAA  SW U.S.A                    

 

EASTERN U.S./CANADA

 

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

 

HAWAII

 

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

 

 

MODERATE QUAKES SHAKE AREAS SOUTH OF AFRICA AND VOLCANO ISLANDS, JAPAN

 

EARTHQUAKE SUMMARY FOR MAY 29, 2023

 

The strongest earthquakes of the day occurred as an M 5.7 Southwest of Africa

and as an M 5.8-5.9 in the Volcano Islands of southeastern Japan. The only earthquake in the Volcano Islands of similar magnitude occurrred about 200 km north of today's epicenter as an M 5.7 on November 7, 2020. The last earthquake in the Volcano Islands of M>=5.8 occurred on August 16, 2018. At the time this summary noted the importance of Tropical Cyclone Soulik in triggering this event as:

 

“A pair of strong earthquakes in the Volcano Islands of M 6.0 and 6.3-6.4 today were likely triggered by the passage of Typhoon Soulik over the epicenter today. Typhoon Soulik has winds up to 80 kts. This storm is expected to pass to the northwest over the next several days reaching Kyushu, Japan around August 21.  This is a classic example of weather-related seismic triggering. ...

 

 

The last earthquake of M>=6.3 in the Volcano Islands within about 200 km of today's epicenters occurred as an M 7.5 on September 18, 2007 and prior to that on July 3, 2001. Earthquakes also hit the region with M 7.6 on March 28, 2000 and January 1, 1998 (M 6.6)." (August 17, 2018)

 

The Volcano Islands are located north of Guam which was hit by a super-typhoon (Mawar) over the past two days.  The earthquake in the Volcano Islands occurred as Super-Typhoon Mawas passed through the region and may have been promoted by energy associated with that storm, the strongest in the region in the past two decades as noted in this  and previous issues of this summary as:

 

"Typhoon Mawar (02W) continued today in the area East of Taiwan and northern Philippines.  It is expected to track to the northwest reaching Taiwan around May 31 as a typhoon with winds up to 135 kts. It is likely that a moderate to strong earthquake could occur near northern Philippines or Taiwan with this storm in the next week. This appears to be the strongest typhoon to hit Guam in the past two decades." (May 30, 2023)

 

Forecasts 153428 and 153693 had expected this activity in the Volcano Islands was likely at the end of May or early June, 2023.

 

O: 30MAY2023 00:52:08  24.0N  143.0E Mw=5.8  EMSC   VOLCANO ISLANDS, JAPAN REGION

P:  1JUN2023 153693    26.0N  144.0E 4.0-5.6 ABAAA  Bonin Islands              

P: 26MAY2023 153428    22.0N  145.0E 4.0-5.4 BBBAA  Volcano Islands            

 

The earthquake of M 5.7 South of Africa today is near the antipode of the Andreanof Islands, Alaska at 53N 170W. A moderate far-field earthquake in the

Andreanof Islands near the this antipode is likely in the next several days. This earthquake in the area southwest of Africa was not reported felt in this remote oceanic area. This event occurred west of the M 6.8 south of Africa in the Prince Edward Islands of May 21, 2023 and may have been promoted by strong regional stress redistribution from that event. Equal or larger events within about 300 km of today's epicenter occurred as an M 5.9 on August 9, 2020 and an M 6.6 on January 28, 2018. This earthquake is located near 103 degrees from the M 7.3 in Tajikistan of February 23, 2023 and may have been promoted by energy from that source. Other activity at this distance from Tajikistan today occurred in Central California, New Madrid and Kentucky. It is also at 102 degrees from the Loyalty Islands where a series of major earthquakes occurred around May 19 and was probably promoted by energy from that source as well.

 

O: 29MAY2023 21:52:05  53.0S   10.4E Mw=5.7  EMSC   SOUTHWEST OF AFRICA          

 

Another recent typhoon landfall has occurred in the Bay of Bengal in the area of India and Myanmar. This Tropical Cyclone was described in past issues of this summary as:

 

"TC Mocha (01B) formed today in the area south of Myanmar and Bangladesh in the Gulf of Bengal with winds up to 130 kts.  It is expected to continue north and to make landfall in the next two days in India, Bangladesh  and Myanmar. Considerable damage is expected with winds up to 130 kts. Seismicity in Southeast Asia is likely to be enhanced while this storm is active." (May 15-16, 2023)

 

It is possible this area of Assam, India and Myanmar could still see a weather-related moderate event in the next several days. A series of moderate events have occurred in Assam, India in the past week perhaps indicating a larger event is possible.

 

An earthquake of M 5.2 also occurred in the Drake Passage north of Antarctica and south of South America today. It was not reported felt in this remote oceanic area. The only even  of M>5.1 in the Drake Passage in the past three years was an M 5.4 about 500 km southeast of this epicenter on June 23, 2021. Forecast 153890 had expected seismic enhancement in this area was likely at the end of May or in early June, 2023.

 

O: 30MAY2023 04:35:01  56.7S   69.4W ML=5.1  EMSC   DRAKE PASSAGE                

P:  1JUN2023 153890    55.0S   64.0W 3.0-5.4 ABCAA  So. So. America            

 

The most unusual earthquake in the U.S. or Canada today occurred in western

Kentucky. This event of M 3.3 was followed by an M 2.4 aftershock. NEIC reported this earthquake of M 3.0-3.3 in Western Kentucky was felt with intensity IV in the area(s) of Western Kentucky  in Calhoun, Rumsey, Sacramento, Hanson; III in Livermore, Madisonville, Benton and Louisville and in Indiana at Newburgh and Evansville. The last earthquake of M>2 in western Kentucky was recorded about 150 km west of today's epicenter with M 2.0 on April 4, 2021 and January 18, 2021. The last earthquake of M>=3.3 within about 150 km of this epicenter in  Kentucky occurred as an M 3.8 on September 19, 2017. This event occurred several hours before a great earthquake in Chiapas and several major solar flares. Forecast 153458 had expected today's event was likely within about 150 km around May 26. This epicenter is located at 144 degrees from the M 7.0 in Java of April 14 and the M 7,3 in Nias, Sumatra, Indonesia of April 24 and at 103 degrees from the M 7.2 in Tajikistan of February 23, 2023 and may have been promoted by energy from those sources.

 

 

O: 30MAY2023 02:49:42  37.5N   87.4W Md=2.4  EMSC   WESTERN KENTUCKY

O: 30MAY2023 02:45:21  37.5N   87.3W mb=3.3  EMSC   WESTERN KENTUCKY             

P: 26MAY2023 153458    38.0N   89.0W 2.0-4.1 BABAA  New Madrid 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: 29MAY2023 14:17:50  40.5N   84.2E mb=4.2  EMSC   SOUTHERN XINJIANG, CHINA     

P: 25MAY2023 153503    41.0N   83.0E 4.0-5.4 BAAAA  Kirgizstan/Xinjiang        

 

O: 29MAY2023 15:34:31  51.8N  104.7E mb=3.7  EMSC   LAKE BAYKAL REGION, RUSSIA   

P: 31MAY2023 153825    51.0N   98.0E 3.0-4.6 AACAA  So. Siberia                

 

INDONESIA AND PHILIPPINES

 

O: 30MAY2023 02:42:02   3.6S  134.9E ML=4.1  EMSC   PAPUA, INDONESIA             

P: 30MAY2023 153659     2.0S  133.0E 4.0-5.6 ABAAA  West Irian, PNG             

 

O: 29MAY2023 23:15:51   6.4S  130.0E ML=4.4  EMSC   BANDA SEA                    

O: 29MAY2023 15:59:59   7.2S  130.6E mb=4.5  EMSC   KEP. TANIMBAR REGION, INDONESIA

P: 30MAY2023 153660     6.0S  130.0E 4.0-5.8 AAAAA  West Irian, PNG             

 

O: 29MAY2023 13:52:52   7.7S  128.7E mb=4.7  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 28MAY2023 153361     7.0S  128.0E 4.0-5.5 AAAAA  Banda Sea                  

 

O: 29MAY2023 17:08:16   9.8N  125.2E mb=4.6  EMSC   MINDANAO, PHILIPPINES        

P: 27MAY2023 153395    10.0N  125.0E 3.5-5.0 AAAAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 4.6 in Mindanao, Philippines was felt with intensity II-III in the area(s) of Mindanao, Philippines in Brasilisa, Caraga (V) and in Southern Tagalog at Lucsuhin (II).

 

O: 30MAY2023 01:04:32  13.4N  120.8E mb=4.7  EMSC   MINDORO, PHILIPPINES         

P: 21MAY2023 153396    13.0N  121.0E 3.5-4.9 CAAAA  Luzon, Philippines         

P: 26MAY2023 153396    12.0N  122.0E 3.5-5.0 BBAAA  Luzon, Philippines         

 

CENTRAL AND SOUTH AMERICA

 

O: 29MAY2023 13:59:09  15.7N   93.5W ML=4.2  EMSC   CHIAPAS, MEXICO              

P: 26MAY2023 153386    16.0N   93.0W 3.5-5.5 BAAAA  Chiapas, Mexico            

 

O: 29MAY2023 09:36:02  18.9N   68.5W ML=3.9  EMSC   DOMINICAN REPUBLIC REGION

O: 29MAY2023 09:38:15  18.8N   68.1W ML=3.6  EMSC   DOMINICAN REPUBLIC REGION    

P: 28MAY2023 153407    18.0N   68.0W 3.4-5.4 AAAAA  Puerto Rico                

 

O: 29MAY2023 20:56:17  19.2N   69.9W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 30MAY2023 153691    20.0N   69.0W 3.0-4.4 AAAAA  Bahamas/No. Caribbean      

 

O: 30MAY2023 06:35:16  29.5S   71.3W ML=4.2  EMSC   COQUIMBO, CHILE              

P: 29MAY2023 153587    29.0S   72.0W 4.0-5.4 AAAAA  Coast Central Chile        

 

O: 29MAY2023 15:02:29  31.7S   66.8W mb=4.9  EMSC   LA RIOJA, ARGENTINA          

P: 30MAY2023 153601    32.0S   70.0W 4.0-5.8 AABAA  Central Chile              

 

NEIC reported this earthquake of M 4.9 in Argentina was felt with intensity II-III in the area(s) of Argentina in San Juan.

 

 

AFRICA AND EUROPE

 

O: 30MAY2023 05:45:01  28.0S   26.8E ML=3.0  EMSC   SOUTH AFRICA                 

P:  3JUN2023 153866    27.0S   27.0E 3.0-4.4 BAAAA  Rep. South Africa          

 

O: 29MAY2023 19:16:31  47.4N    6.9E ML=3.8  EMSC   SWITZERLAND                  

P: 26MAY2023 153495    45.0N    7.0E 3.0-5.4 BCAAA  Austria                    

 

O: 29MAY2023 16:46:23  47.7N   15.9E ML=3.3  EMSC   AUSTRIA                      

P: 31MAY2023 153776    44.0N   16.0E 3.0-5.1 ACAAA  Italy                      

 

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

 

SOUTHWEST PACIFIC

 

O: 29MAY2023 19:09:55  14.2S  170.6E mb=5.0  EMSC   VANUATU REGION               

P:  4JUN2023 153845    14.0S  172.0E 4.0-5.4 BAAAA  Fiji Islands               

 

O: 29MAY2023 10:04:58  14.9S  166.9E Mw=5.2  EMSC   VANUATU                      

P: 27MAY2023 153583    14.0S  167.0E 4.0-5.4 AAAAA  Vanuatu Islands            

 

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

 

O: 30MAY2023 04:01:32  17.2S  172.4W mb=4.8  EMSC   TONGA REGION                 

P: 28MAY2023 153580    17.0S  172.0W 4.0-5.7 AAAAA  Tonga Islands               

 

OCEAN RIDGES

 

O: 29MAY2023 21:52:05  53.0S   10.4E Mw=5.7  EMSC   SOUTHWEST OF AFRICA          

 

O: 30MAY2023 04:35:01  56.7S   69.4W ML=5.1  EMSC   DRAKE PASSAGE                

P:  1JUN2023 153890    55.0S   64.0W 3.0-5.4 ABCAA  So. So. America             

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 29MAY2023 12:37:57  33.6S  178.5E ML=4.1  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 25MAY2023 153608    32.0S  179.0E 4.0-5.4 BBAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 30MAY2023 00:52:08  24.0N  143.0E Mw=5.8  EMSC   VOLCANO ISLANDS, JAPAN REGION

P:  1JUN2023 153693    26.0N  144.0E 4.0-5.6 ABAAA  Bonin Islands              

P: 26MAY2023 153428    22.0N  145.0E 4.0-5.4 BBBAA  Volcano Islands            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 29MAY2023 10:49:57  30.7N  116.3W ML=3.6  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 29MAY2023 19:59:20  30.8N  116.2W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 29MAY2023 07:14:58  31.2N  115.3W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO

O: 29MAY2023 20:52:07  30.5N  116.2W ML=3.6  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 29MAY2023 153471    31.0N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 29MAY2023 20:20:32  31.4N  114.6W ML=3.4  EMSC   GULF OF CALIFORNIA

O: 29MAY2023 20:18:08  31.4N  114.6W ML=3.5  EMSC   GULF OF CALIFORNIA           

P: 27MAY2023 153468    30.2N  114.1W 2.0-4.1 ABAAA  SW U.S.A                   

 

O: 29MAY2023 13:40:00  37.3N  117.6W ML=2.6  EMSC   NEVADA                       

P: 27MAY2023 153433    37.1N  117.8W 2.5-4.7 AAAAA  California/Nevada area     

 

O: 29MAY2023 10:44:52  37.5N  118.8W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P: 28MAY2023 153434    37.5N  118.6W 2.5-4.7 AAAAA  California/Nevada area     

 

O: 29MAY2023 19:48:37  38.4N  122.4W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P: 31MAY2023 153717    38.9N  122.8W 2.5-4.6 AAAAA  Central California         

 

O: 29MAY2023 08:31:46  40.7N  121.9W Md=2.6  EMSC   NORTHERN CALIFORNIA          

P: 28MAY2023 153516    40.2N  121.2W 2.5-4.5 AAAAA  Northern California        

 

NEIC reported this earthquake of M 2.6 in Northern California was felt with intensity II-III in the area(s) of Northern California in Shasta Lake, Redding.

 

 

ALASKA

 

O: 30MAY2023 04:14:19  51.5N  176.1W mb=3.8  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 30MAY2023 153810    51.1N  174.6W 3.5-5.0 AAAAA  Andreanoff Isls, Aleutians 

 

O: 29MAY2023 13:35:50  51.6N  178.9E mb=3.9  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  3JUN2023 153823    51.0N  177.0E 4.0-5.8 BABAA  Rat Islands                

P: 22MAY2023 153548    51.0N  179.0E 4.0-5.6 CAAAA  Rat Islands                

 

O: 29MAY2023 12:37:12  54.5N  161.7W ml=3.4  EMSC   ALASKA PENINSULA             

P: 25MAY2023 153552    54.6N  163.6W 3.5-4.9 BABAA  Unimak Islands, Aleutians  

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

No events of M>=2 were located in the northwestern U.S. or western Canada today.

 

ROCKY MOUNTAINS REGION

 

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

 

EASTERN U.S./CANADA

 

O: 29MAY2023 17:10:33  46.5N   67.8W MB=2.0  ECAN of Centreville, NB             

P: 27MAY2023 153498    46.0N   66.0W 2.0-4.1 AABAA  E. of Maine                

 

O: 29MAY2023 09:17:36  48.5N   69.0W MB=1.8  ECAN of Portneuf-sur-Mer, QC   

O: 29MAY2023 10:20:49  48.7N   68.6W MB=2.1  ECAN of Rimouski, QC                

P:  7JUN2023 153780    49.3N   67.5W 2.0-3.9 CAAAA  Maine                      

 

O: 28MAY2023 18:28:02  72.0N   74.8W MB=2.6  ECAN of Pond Inlet, NU  

O: 28MAY2023 22:49:03  73.8N   72.3W MB=3.1  ECAN of Pond Inlet, NU              

P: 28MAY2023 153567    73.3N   73.5W 2.5-4.1 AAAAA  Baffin/Davis Strait Canada 

 

O: 28MAY2023 10:12:18  50.5N   64.7W MB=2.0  ECAN of Rivi├¿re-au-Tonnerre, QC    

P: 29MAY2023 153498    49.0N   66.0W 2.0-4.1 AAAAA  E. of Maine                

 

O: 28MAY2023 03:27:52  47.4N   70.1W MB=0.5  ECAN of La Pocati├¿re, QC  

O: 27MAY2023 12:21:08  47.4N   70.2W MB=0.9  ECAN of La Pocati├¿re, QC  

O: 28MAY2023 08:51:34  47.2N   70.4W MB=1.4  ECAN of Saint-Jean-Port-Joli, QC    

P: 29MAY2023 153505    47.0N   70.0W 2.0-4.4 AAAAA  Maine                      

 

O: 30MAY2023 02:49:42  37.5N   87.4W Md=2.4  EMSC   WESTERN KENTUCKY

O: 30MAY2023 02:45:21  37.5N   87.3W mb=3.3  EMSC   WESTERN KENTUCKY             

P: 26MAY2023 153458    38.0N   89.0W 2.0-4.1 BABAA  New Madrid area            

 

O: 30MAY2023 00:48:48  35.7N   98.1W ML=2.3  EMSC   OKLAHOMA                     

P: 28MAY2023 153484    35.0N   96.0W 2.0-4.2 AABAA  Southern Plains            

 

O: 30MAY2023 01:49:18  36.3N   89.5W Md=2.3  EMSC   TENNESSEE                    

P: 24MAY2023 153458    36.0N   89.0W 2.0-4.0 CAAAA  New Madrid area            

 

HAWAII

 

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

 

UNUSUAL EARTHQUAKE SHAKES VICTORIA, AUSTRALIA

 

EARTHQUAKE SUMMARY FOR MAY 28, 2023

 

An unusual earthquake of M 3.6 was widely felt in Victoria, Australia today. NEIC reported it was felt with maximum intensity IV in Craigieburn and II-III in Sunbury, Melbourne, Melton, Baccus Marsh, Healesville, Clifton Springs, Pakenham and Leopold. The last earthquake of equal or larger magnitude within about 200 km of today's epicenter was an M 4.6 about 200 km southeast of this on July 20, 2012 - an aftershock of an M 5.4 on June 19, 2012. The only earthquakes within about 150 km of today's epicenter in the past 35 years were both of M 3.6 - on November 8, 1992 and August 21, 2001. When the M 5.4 hit southeast of this on June 19, 2012 this summary noted in this regard:

 

"A moderate earthquakes of M 5.2 occurred off the southeastern coast of Australia today and was widely felt in Victoria, New South Wales and Canberra.

....

 

This is the largest earthquake to hit Victoria in decades. Because it was offshore, damage was minimized occurring as cracked walls and as damage to items which fell from shelves in supermarkets and other stores. It is the largest since 1982 and the third largest in the past 100 years in the region of Victoria. Damage was done to supermarkets and pharmacies in  Moe, Newborough, Trafalgar and Morwell and in some cases shelves collapsed. The shaking lasted for about 40 seconds. No damage occurred to infrastructure such as roads, rail, dams and power supply.  An earthquake of M 5.5 hit near this on June 16, 1981 with the largest in modern times an M 6.0 on June 20, 1969 exactly 43 years ago today. (the two events both occurred at about 1100 UT as well). With the three largest events occurring near the summer solstice there could be a seasonal seismic factor involved in this timing as well." (June 19, 2012)

 

Today's epicenter is at 101 degrees from the M 7.2 in Tajikistan of February 23, 2023 and may have been promoted by energy from that source.

 

O: 28MAY2023 13:41:51  37.6S  144.8E mb=3.6  EMSC   NEAR S.E. COAST OF AUSTRALIA 

 

The strongest earthquake in the world today was an M 5.3 in Northern Colombia. NEIC reported it was felt in Santander, Colombia at Barichara, Floridablaca, Bucaramanga; in Tunja Boyaca and in Chiquinquira and in Cundinamarca at Chia, Cota, La Calera, Funza and in Bogota, Colombia. This appears to be part of a general seismic activation period in Colombia which included, but has not been limited to the epicenter of an M 6.6 on May 25, 2023. In the past week six distinct epicenters in Colombia have see earthquakes of M>=4 but today's event is the strongest besides the M 6.6 on May 25. This could be due to regional stress redistribution or to the far-field effects of recent major earthquakes as noted in previous issues of this summary. For example on May 25 it was noted:

 

"... of Colombia. This epicenter is also at 103 degrees from the M 7.8 in Turkey of February 6, 2023 and the M 7.2 in the Kermadec Islands of April 24, 2023 and near this distance from the M 7.6 in Tonga of May 10 and the M 7.8 in the Loyalty Islands of May 19 and may have been promoted by energy from those sources." (May 25, 2023)

 

The only events of M>=5.3 within about 200 km of today's epicenter in Northern

Colombia in the past three years occurred as an M 5.5 on February 23, 2022 and an M 5.4 on March 10, 2023. Forecast 153352 had expected today's event was likely within about 25 km in Colombia around May 25, 2023.

 

O: 28MAY2023 15:45:57   6.7N   73.0W Mw=5.3  EMSC   NORTHERN COLOMBIA            

P: 25MAY2023 153352     7.0N   73.0W 4.0-5.9 BAAAA  Colombia                   

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 29MAY2023 02:33:32  26.8N   92.4E mb=4.8  EMSC   ASSAM, INDIA                 

P: 20MAY2023 153148    27.0N   92.0E 4.0-5.4 CAAAA  Myanmar                    

P: 29MAY2023 153421    27.0N   88.0E 3.5-5.8 AACAA  Nepal                      

 

NEIC reported this earthquake of M 4.8 in Assam, India was felt with intensity II-III in the area(s) of Assam, India with V in Dhekiajuli and Nagaon with IV in Palasbari and III in Assam in Jorhat, Dispur, Kharupetia and III in Bhangtar Samdrup, Bhutan.

 

O: 28MAY2023 18:51:24  28.7N   91.5E mb=4.4  EMSC   EASTERN XIZANG               

P: 20MAY2023 153148    27.0N   92.0E 4.0-5.4 CBAAA  Myanmar                    

 

O: 28MAY2023 07:53:00  35.1N   85.9E mb=4.0  EMSC   XINJIANG-XIZANG BORDER REGION

P: 29MAY2023 153493    34.0N   89.0E 3.8-5.2 ABCAA  Xizang                     

 

O: 28MAY2023 12:56:54  34.5N   70.6E mb=4.7  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 28MAY2023 153467    34.0N   74.0E 3.8-5.2 AACAA  Pakistan                   

 

NEIC reported this earthquake of M 4.7 in Punjab, Pakistan was felt with intensity II-III in the area(s) of Punjab, Pakistan in Wah, Rawalpindi and Sharqpur.

 

O: 28MAY2023 15:22:10  38.4N   45.1E mb=4.1  EMSC   NORTHWESTERN IRAN            

P: 29MAY2023 153490    39.0N   41.0E 3.5-4.9 AACAA  Turkey                     

 

O: 29MAY2023 01:33:11  52.7N  159.3E mb=4.2  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 29MAY2023 153540    52.0N  161.0E 4.0-5.4 AAAAA  E. of Kamchatka            

 

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

 

INDONESIA AND PHILIPPINES

 

O: 28MAY2023 20:18:25   1.1S  120.2E ML=4.1  EMSC   SULAWESI, INDONESIA

O: 28MAY2023 21:05:22   1.1S  120.3E ML=4.0  EMSC   SULAWESI, INDONESIA          

P: 28MAY2023 153348     0.0N  120.0E 4.0-5.4 ABAAA  Celebes Sea                

 

O: 28MAY2023 21:12:55   3.1N  122.8E ML=4.5  EMSC   CELEBES SEA                  

P: 27MAY2023 153356     2.0N  125.0E 4.0-5.4 ABCAA  Mindanao, Philippines      

 

O: 28MAY2023 19:55:03   8.7S  119.3E ML=4.0  EMSC   FLORES REGION, INDONESIA     

P: 24MAY2023 153381     9.0S  118.0E 4.0-5.4 BABAA  Sumbawa Island area        

 

O: 28MAY2023 13:30:00   5.8S  148.0E mb=4.4  EMSC   NEW BRITAIN REGION, P.N.G.

O: 28MAY2023 12:52:39   5.6S  149.8E Mw=5.1  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 27MAY2023 153370     6.0S  150.0E 4.0-5.4 AAAAA  New Ireland                

 

NEIC reported this earthquake of M 5.1 in New Britain was felt with intensity II-III in the area(s) of New Britain in Kimbe and in Port Moresby, Papua New Guinea.

 

O: 29MAY2023 02:18:18  13.5N   94.1E mb=4.5  EMSC   ANDAMAN ISLANDS, INDIA REGION

P: 19MAY2023 153115    11.0N   94.0E 4.0-5.4 CCAAA  Andaman Islands            

 

CENTRAL AND SOUTH AMERICA

 

O: 28MAY2023 15:45:57   6.7N   73.0W Mw=5.3  EMSC   NORTHERN COLOMBIA            

P: 25MAY2023 153352     7.0N   73.0W 4.0-5.9 BAAAA  Colombia                   

 

O: 29MAY2023 02:45:22   5.1S   77.2W ML=4.1  EMSC   NORTHERN PERU                 

P: 25MAY2023 153365     4.0S   80.0W 4.0-5.7 BBCAA  Ecuador                    

 

O: 28MAY2023 15:45:57   6.7N   73.0W Mw=5.3  EMSC   NORTHERN COLOMBIA            

P: 25MAY2023 153352     7.0N   73.0W 4.0-5.9 BAAAA  Colombia                    

 

O: 29MAY2023 00:02:53   7.0N   76.2W mb=4.3  EMSC   NORTHERN COLOMBIA            

P: 27MAY2023 153352     7.0N   78.0W 4.0-5.9 AABAA  Colombia                   

 

O: 29MAY2023 04:57:33   8.0S   74.4W Mw=5.1  EMSC   CENTRAL PERU                 

P: 27MAY2023 153362     9.0S   75.0W 3.5-5.1 AAAAA  Brazil                     

 

O: 29MAY2023 03:32:33   8.6S   79.6W ML=4.0  EMSC   NEAR COAST OF NORTHERN PERU  

P: 23MAY2023 153371     9.0S   81.0W 4.0-5.6 CABAA  No. Peru                   

 

O: 29MAY2023 02:44:19   9.6S   76.1W ML=4.2  EMSC   CENTRAL PERU                 

P: 27MAY2023 153362     9.0S   75.0W 3.5-5.1 AAAAA  Brazil                     

 

O: 28MAY2023 20:27:21  14.2N   92.8W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 30MAY2023 153391    14.0N   91.0W 3.5-5.1 AABAA  Guatemala                  

 

O: 28MAY2023 18:40:23  15.5N   94.9W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 30MAY2023 153405    15.0N   96.0W 3.5-5.6 AAAAA  Oaxaca, Mexico             

 

O: 28MAY2023 19:08:22  15.9S   72.0W mb=4.8  EMSC   SOUTHERN PERU                

P: 23MAY2023 153577    16.0S   72.0W 4.0-5.4 BAAAA  So. Peru/Bolivia           

 

O: 28MAY2023 10:07:20  18.1N   66.2W Md=3.1  EMSC   PUERTO RICO                  

P: 26MAY2023 153408    19.0N   67.0W 3.4-5.3 AAAAA  Puerto Rico                

 

O: 28MAY2023 16:16:01  18.1N  105.9W mb=4.4  EMSC   OFF COAST OF JALISCO, MEXICO 

P: 24MAY2023 153399    19.0N  104.0W 3.5-5.2 BABAA  Michoacan, Mexico          

 

O: 28MAY2023 10:26:15  18.2N  100.9W ML=4.2  EMSC   GUERRERO, MEXICO             

P: 30MAY2023 153400    19.0N  101.0W 3.5-5.5 AAAAA  Michoacan, Mexico          

 

O: 28MAY2023 10:54:46  18.4N  104.3W ML=4.1  EMSC   OFFSHORE COLIMA, MEXICO      

P: 24MAY2023 153399    19.0N  104.0W 3.5-5.2 BAAAA  Michoacan, Mexico          

P: 27MAY2023 153399    18.0N  103.0W 3.5-5.3 AAAAA  Michoacan, Mexico          

 

O: 28MAY2023 20:09:06  18.7N   67.4W Md=3.0  EMSC   PUERTO RICO REGION           

O: 28MAY2023 16:08:45  18.9N   68.5W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

O: 28MAY2023 22:50:35  19.3N   68.4W Md=3.6  EMSC   DOMINICAN REPUBLIC REGION

O: 28MAY2023 20:37:48  19.4N   68.3W Md=3.8  EMSC   DOMINICAN REPUBLIC REGION

P: 28MAY2023 153407    18.0N   68.0W 3.4-5.4 AAAAA  Puerto Rico                

 

O: 28MAY2023 09:36:02  19.1N   64.8W Md=3.6  EMSC   VIRGIN ISLANDS REGION        

O: 28MAY2023 11:50:51  19.1N   64.8W Md=3.6  EMSC   VIRGIN ISLANDS REGION

O: 28MAY2023 12:20:03  19.1N   64.8W Md=3.3  EMSC   VIRGIN ISLANDS REGION

P: 28MAY2023 153395    18.0N   64.0W 3.0-5.1 ABAAA  Leeward Islands            

 

O: 28MAY2023 11:19:37  19.7N   65.8W Md=3.3  EMSC   PUERTO RICO REGION

O: 28MAY2023 20:47:11  19.0N   65.4W Md=3.7  EMSC   PUERTO RICO REGION           

O: 28MAY2023 22:31:15  19.6N   65.7W Md=3.4  EMSC   PUERTO RICO REGION           

P: 26MAY2023 153408    19.0N   67.0W 3.4-5.3 AAAAA  Puerto Rico                

 

O: 28MAY2023 13:44:40  19.6N   70.7W ML=3.1  EMSC   DOMINICAN REPUBLIC           

P: 26MAY2023 153413    20.0N   71.0W 3.0-4.7 AAAAA  Bahamas/No. Caribbean      

 

O: 29MAY2023 02:41:26  24.2S   67.0W mb=4.1  EMSC   SALTA, ARGENTINA             

P: 26MAY2023 153585    23.0S   67.0W 4.0-5.8 BBAAA  Argentina                  

 

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O: 28MAY2023 16:13:57  10.6S  164.9E mb=4.9  EMSC   SANTA CRUZ ISLANDS REGION    

P: 22MAY2023 153582    11.0S  164.0E 4.0-5.4 CAAAA  Vanuatu Islands            

 

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

 

OCEAN RIDGES

 

O: 29MAY2023 02:58:09  14.5N   56.3E mb=4.5  EMSC   OWEN FRACTURE ZONE REGION    

P: 22MAY2023 153384    15.0N   57.0E 3.5-4.9 CAAAA  Arabian Sea                

 

O: 28MAY2023 18:05:10  58.4S  139.8W mb=5.0  EMSC   PACIFIC-ANTARCTIC RIDGE      

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 28MAY2023 10:52:02  32.0S  179.1E ML=4.1  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 25MAY2023 153608    32.0S  179.0E 4.0-5.4 BAAAA  So. Kermadec Islands       

 

O: 28MAY2023 13:41:51  37.6S  144.8E mb=3.6  EMSC   NEAR S.E. COAST OF AUSTRALIA 

 

JAPAN AND KURIL ISLANDS

 

O: 28MAY2023 18:03:11  53.2N  142.6E mb=4.6  EMSC   SAKHALIN, RUSSIA             

P: 25MAY2023 153527    49.0N  142.0E 3.5-5.8 BCAAA  So. Kurils                 

 

O: 28MAY2023 07:00:46  42.5N  149.0E mb=4.2  EMSC   OFF COAST OF HOKKAIDO, JAPAN 

P: 27MAY2023 153500    44.0N  148.0E 3.5-5.7 ABAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 28MAY2023 16:32:29  30.8N  116.2W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 28MAY2023 21:07:24  30.8N  116.3W ML=3.3  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 28MAY2023 10:02:49  30.9N  116.1W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO

P: 29MAY2023 153471    31.0N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 28MAY2023 16:51:44  30.9N  114.3W ML=3.6  EMSC   GULF OF CALIFORNIA           

P: 27MAY2023 153468    30.2N  114.1W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 28MAY2023 19:02:35  31.2N  115.2W ML=3.1  EMSC   BAJA CALIFORNIA, MEXICO

O: 28MAY2023 07:44:23  31.0N  115.7W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

O: 28MAY2023 22:45:47  31.0N  116.6W ML=3.6  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 29MAY2023 153471    31.0N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 28MAY2023 08:47:25  32.4N  115.2W Ml=2.0  EMSC   BAJA CALIFORNIA, MEXICO

O: 28MAY2023 08:41:55  32.4N  115.2W Ml=2.6  EMSC   BAJA CALIFORNIA, MEXICO      

P: 29MAY2023 153471    32.4N  115.8W 2.5-4.6 AAAAA  So. California             

 

O: 29MAY2023 00:31:10  37.0N  121.5W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 26MAY2023 153442    37.8N  122.6W 2.5-4.4 BAAAA  Central California         

 

 

ALASKA

 

O: 29MAY2023 03:25:03  55.6N  158.8W ML=3.0  EMSC   ALASKA PENINSULA             

P: 25MAY2023 153533    55.8N  157.7W 3.5-5.4 BAAAA  Alaska Peninsula           

 

O: 28MAY2023 11:30:58  63.0N  149.8W mb=4.0  EMSC   CENTRAL ALASKA               

P: 27MAY2023 153559    62.8N  149.1W 3.2-5.1 AAAAA  Central Alaska              

P: 29MAY2023 153560    63.3N  151.0W 3.2-4.9 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.8 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska in Matanuska-Susitna Borough.

 

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: 28MAY2023 11:46:39  31.7N  104.3W ML=2.7  EMSC   WESTERN TEXAS

O: 29MAY2023 06:57:52  31.7N  104.3W ML=2.7  EMSC   WESTERN TEXAS

O: 28MAY2023 10:08:16  31.7N  104.3W ML=3.0  EMSC   WESTERN TEXAS                

P: 26MAY2023 153470    31.4N  104.2W 2.0-4.1 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

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

 

HAWAII

 

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

 

MODERATE QUAKES IN SOLOMON IS; AFGHANISTAN AND SOUTH SANDWICH ISLANDS

 

EARTHQUAKE SUMMARY FOR MAY 27, 2023

 

It was a relatively quiet day in global seismicity. Moderate quakes occurred in the South Sandwich Islands (M 5.5) and felt in Pakistan (M 5.2) and the Solomon Islands (M 5.6) but no damaging quakes were observed. The geomagnetic field was quiet and solar flare activity was minimal. Tidal effects were also minimal mid-way between new and full moons. Typhoon Mawar which may have helped trigger one of the largest earthquakes in the region of southeastern Honshu, Japan yesterday remained a threat to Taiwan and Japan as it continued on its westward track.

 

A moderate earthquake shook regions of Pakistan, Hindu Kush, Afghanistan and Kashmir, India today. This event of M 5.2 was reported with maximum intensity V in Abottabad, Pakistan and Badgam, Jammu and Kashmir, Intia and IV in Pakistan at Haripur, Taxila, with lesser shaking in Peshawar, Wah, Punjab, Rawalpindi, Lahore, Sharqpur and Udhampur, India. A foreshock of M 4.3 was felt in Rawalpindi, Punjab, Pakistan with III and in Badgam, Jammu and Kashmir, India with intensity IV. This is likely an aftershock of the M 6.5 of March 21, 2023, the strongest to date. A similar M 5.2-5.3 shook the Hindu Kush area on May 3, 2023 and was reported in this summary as:

 

"NEIC reported this earthquake of M 5.3 in Hindu Kush, Afghanistan was felt with intensity II-III in the area(s) of Hindu Kush, Afghanistan in Kabul and in Tashkent, Uzbekistan." (May 3, 2023)

 

Forecast 153450 had expected today's activity in Afghanistan was likely around May 24, 2023 within about 100 km of the epicenter.

 

O: 28MAY2023 05:49:56  36.6N   71.2E Mw=5.2  EMSC   HINDU KUSH REGION, AFGHANISTAN

O: 27MAY2023 19:24:53  36.9N   71.4E mb=4.3  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 24MAY2023 153450    36.0N   71.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

A moderate earthquakes also shook the region of Guadalcanal, Solomon Islands today where NEIC reported it was felt with intensity IV in Honiara. This appears to be an aftershock of an M 6.1 of May 21, 2023. At the time this summary noted in this regard:

 

 

"A strong M 6.1 was also felt in the Solomon Islands today. NEIC reported it was felt with intensity V in the Solomon Islandsa at Kirakira Makira and Ulawa and in Honiara, Guadalcanal. This is part of a regional enhancement of seismicity following the M 7.7 and 7.2 events in the Loyalty Islands of the past two day which occurred about 15 degrees south east of this epicenter in the Solomon Islands. Today's event of M 6.1 is the strongest in the Solomon Islands within about 200 km since an M 6.3 on January 27, 2020 and an M 6.5 on September 9, 2018." (May 21, 2023)

 

Forecast 153574 had expected today's activity in the Solomon Islands was likely towards the end of May within about 100 km of this epicenter.

 

O: 28MAY2023 03:29:54  10.1S  161.2E Mw=5.6  EMSC   SOLOMON ISLANDS              

P: 22MAY2023 153574    10.0S  160.0E 4.0-5.6 CAAAA  No. of Santa Cruz Islands  

 

A moderate earthquake of M 5.5 also occurred today in the South Sandwich Islands. It was not reported felt in this remote area. The last earthquake of M>=5.5 in the South Sandwich Islands was on April 28, 2023 when an M 5.6 was recorded. This and a second M 5.6 on April 24, 2023 are the strongest events in the South Sandwich Islands in the past three months. Today's event occurred near local solar noon and may have been promoted by tidal stresses which maximize near this hour. Forecast 153618 had expected this activity was likely within about 100 km of this epicenter around May 28.

 

O: 27MAY2023 15:21:47  58.0S   25.7W Mw=5.5  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 28MAY2023 153618    59.0S   26.0W 4.0-6.1 AAAAA  So. Sandwich Islands       

 

The largest earthquake in the U.S. or Canada today was an M 4.6 in Southern Alaska. It was followed by an M 4.4 aftershock. NEIC reported this activity was felt with intensity II-III in Alaska in the West Kenai Peninsula, Anchor Point, Homer, Kenai and Anchorage. This is the strongest earthquake within about 150 km of this epicenter since an M 5.0 on February 2, 2023 and prior to that an M 4.7 on March 23, 2022. Earthquakes in this area generally occur at intermediate depths and are not destructive at the earth's surface.  Forecast 153555 had expected this event was likely within about 10 km around May 25, 2023.

 

O: 27MAY2023 16:49:22  60.3N  153.0W mb=4.6  EMSC   SOUTHERN ALASKA              

P: 25MAY2023 153555    60.3N  153.0W 3.2-5.1 AAAAA  Central Alaska             

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 27MAY2023 11:45:56  20.1N   72.9E ML=3.3  EMSC   NEAR THE COAST OF GUJARAT, INDIA

O: 27MAY2023 11:58:00  20.0N   73.0E ML=3.5  EMSC   NEAR THE COAST OF GUJARAT, IND

P: 28MAY2023 153417    23.0N   71.0E 3.5-4.9 ACBAA  India                      

 

O: 27MAY2023 21:36:33  27.1N   92.6E mb=4.4  EMSC   ARUNACHAL PRADESH, INDIA     

P: 20MAY2023 153148    27.0N   92.0E 4.0-5.4 CAAAA  Myanmar                    

 

NEIC reported this earthquake of M 4.4 in Assam, India was felt with intensity II-III in the area(s) of Assam, India in Rangia.

 

O: 27MAY2023 06:00:00  28.2N   51.2E ML=4.0  EMSC   SOUTHERN IRAN                

P: 27MAY2023 153425    29.0N   51.0E 3.5-5.2 AAAAA  So. Iran/Persian Gulf      

 

O: 28MAY2023 07:52:59  35.1N   86.0E ML=4.2  EMSC   XINJIANG-XIZANG BORDER REGION

P: 29MAY2023 153493    34.0N   89.0E 3.8-5.2 ABBAA  Xizang                     

 

O: 28MAY2023 05:49:56  36.6N   71.2E Mw=5.2  EMSC   HINDU KUSH REGION, AFGHANISTAN

O: 27MAY2023 19:24:53  36.9N   71.4E mb=4.3  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 24MAY2023 153450    36.0N   71.0E 3.8-5.4 BAAAA  Hindu Kush/Pakistan        

 

O: 27MAY2023 17:24:14  38.2N   73.0E mb=4.2  EMSC   TAJIKISTAN                   

P: 26MAY2023 153451    38.0N   73.0E 3.8-5.3 AAAAA  Hindu Kush/Pakistan        

 

O: 27MAY2023 19:43:13  51.7N  102.4E mb=3.7  EMSC   RUSSIA-MONGOLIA BORDER REGION

P: 20MAY2023 153278    51.0N   98.0E 3.0-4.4 CACAA  So. Siberia                

 

O: 28MAY2023 01:17:41  54.4N  161.4E mb=4.4  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 28MAY2023 153540    55.0N  160.0E 4.0-5.6 AAAAA  E. of Kamchatka            

 

O: 27MAY2023 06:48:12  54.4N  163.8E mb=4.0  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 27MAY2023 153542    55.0N  163.0E 4.0-5.7 AAAAA  Komandorsky Isl            

 

 

INDONESIA AND PHILIPPINES

 

O: 27MAY2023 13:25:30   5.8S  149.1E mb=4.4  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 27MAY2023 153370     6.0S  150.0E 4.0-5.4 AAAAA  New Ireland                

 

O: 27MAY2023 19:36:35   6.1S  130.5E mb=5.2  EMSC   BANDA SEA                     

P: 27MAY2023 153382     6.0S  131.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O: 27MAY2023 03:45:35   8.3S  119.7E ML=4.2  EMSC   FLORES REGION, INDONESIA     

P: 24MAY2023 153381     9.0S  118.0E 4.0-5.4 BABAA  Sumbawa Island area        

P: 29MAY2023 153366     7.0S  121.0E 4.0-5.8 ABAAA  Flores Island area         

 

O: 27MAY2023 05:52:45   8.5N  126.7E mb=4.5  EMSC   MINDANAO, PHILIPPINES        

P: 26MAY2023 153351     9.0N  126.0E 4.0-5.7 AAAAA  Central Philippines        

 

O: 27MAY2023 06:00:14   9.0S  113.0E ML=4.4  EMSC   SOUTH OF JAVA, INDONESIA     

P: 24MAY2023 153374     9.0S  113.0E 4.0-5.6 BAAAA  So. of Bali                

 

O: 28MAY2023 06:43:54  16.5N  122.4E ML=4.6  EMSC   LUZON, PHILIPPINES           

P: 29MAY2023 153397    16.0N  120.0E 3.5-4.9 AABAA  Luzon, Philippines         

 

 

CENTRAL AND SOUTH AMERICA

 

O: 27MAY2023 20:54:14   8.3S   80.0W ML=4.5  EMSC   OFF COAST OF NORTHERN PERU   

P: 23MAY2023 153371     9.0S   81.0W 4.0-5.6 BAAAA  No. Peru                   

 

O: 28MAY2023 02:56:33   8.9N   77.2W ML=4.7  EMSC   PANAMA-COLOMBIA BORDER REGION

P: 27MAY2023 153352     7.0N   78.0W 4.0-5.9 ABAAA  Colombia                   

 

O: 27MAY2023 06:01:11   9.3N   75.3W mb=4.5  EMSC   NEAR NORTH COAST OF COLOMBIA 

P: 27MAY2023 153352     7.0N   78.0W 4.0-5.9 ACCAA  Colombia                   

 

O: 27MAY2023 07:52:24  16.2N  100.6W ML=4.1  EMSC   OFF COAST OF GUERRERO, MEXICO

P: 26MAY2023 153406    17.0N  100.0W 3.5-5.5 AAAAA  Oaxaca, Mexico             

 

O: 28MAY2023 06:12:05  21.4S   69.8W ML=4.0  EMSC   TARAPACA, CHILE              

O: 28MAY2023 06:12     21.4S   69.8W mb=4.0  GUC    Antofagasta at Tocopilla, Chil

P: 30MAY2023 153588    21.0S   69.0W 4.0-5.8 AAAAA  Coast No. Chile            

 

GUC reported this earthquake was felt with intensity  III in  Antofagasta at Tocopilla, Chile.

 

O: 28MAY2023 02:06:19  23.4S   69.9W Mw=4.6  EMSC   ANTOFAGASTA, CHILE           

O: 28MAY2023 02:06     23.4S   69.9W mb=4.6  GUC    Antofagasta at Antofagasta and

P: 23MAY2023 153588    24.0S   69.0W 4.0-5.4 BAAAA  Coast No. Chile            

 

GUC reported this earthquake was felt with intensity  V in  Antofagasta at Antofagasta and Mejillones and III in Sierra Gorda, 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 in Antofagasta.

 

O: 27MAY2023 07:45:15  24.0S   67.1W mb=4.2  EMSC   SALTA, ARGENTINA             

P: 26MAY2023 153585    23.0S   67.0W 4.0-5.8 AAAAA  Argentina                  

 

 

O: 27MAY2023 17:03:07  14.7N   92.1W ML=4.0  EMSC   GUATEMALA

O: 27MAY2023 17:40:33  14.8N   92.1W ML=4.1  EMSC   GUATEMALA                    

P: 30MAY2023 153391    14.0N   91.0W 3.5-5.1 BAAAA  Guatemala                  

 

O: 28MAY2023 06:22:35  19.5N   65.7W Md=4.0  EMSC   PUERTO RICO REGION

O: 27MAY2023 04:51:40  19.6N   66.3W Md=3.7  EMSC   PUERTO RICO REGION

O: 28MAY2023 03:18:09  19.6N   65.6W Md=4.0  EMSC   PUERTO RICO REGION

O: 28MAY2023 05:33:05  19.6N   65.7W Md=3.6  EMSC   PUERTO RICO REGION

O: 28MAY2023 05:53:21  19.6N   65.7W Md=3.8  EMSC   PUERTO RICO REGION

O: 27MAY2023 09:19:51  19.7N   65.8W Md=3.8  EMSC   PUERTO RICO REGION

O: 28MAY2023 06:28:31  19.7N   65.7W Md=3.7  EMSC   PUERTO RICO REGION

O: 27MAY2023 05:24:45  19.5N   66.3W ML=3.6  EMSC   PUERTO RICO REGION           

P: 26MAY2023 153408    19.0N   67.0W 3.4-5.3 AAAAA  Puerto Rico                

 

O: 27MAY2023 07:25:11  17.9N   67.0W Md=3.0  EMSC   PUERTO RICO REGION           

P: 28MAY2023 153407    18.0N   68.0W 3.4-5.4 AAAAA  Puerto Rico                 

 

O: 27MAY2023 16:50:36  45.8S   77.4W ML=4.8  EMSC   OFF COAST OF AISEN, CHILE

O: 27MAY2023 16:51:45  44.9S   78.1W ML=5.3  EMSC   OFF COAST OF AISEN, CHILE    

P: 27MAY2023 153609    43.0S   83.0W 4.0-5.7 ABCAA  Chile Rise                  

 

AFRICA AND EUROPE

 

O: 27MAY2023 11:40:40  22.6S   25.1E ML=3.5  EMSC   BOTSWANA                     

P: 23MAY2023 153591    27.0S   27.0E 3.0-4.5 BCBAA  Rep. South Africa          

 

O: 28MAY2023 04:44:22  37.7N   15.1E ML=4.0  EMSC   SICILY, ITALY                 

P: 27MAY2023 153455    39.0N   14.0E 3.0-4.9 ABAAA  Mediterranean/Sicily       

 

O: 27MAY2023 21:36:06  37.9N   36.3E ML=4.0  EMSC   CENTRAL TURKEY               

P: 25MAY2023 153488    38.0N   36.0E 3.5-5.3 AAAAA  Turkey                      

 

O: 27MAY2023 18:07:58  78.4N    7.1E Mw=3.5  EMSC   SVALBARD REGION

O: 27MAY2023 14:24:06  78.5N    7.4E mb=4.4  EMSC   SVALBARD REGION

O: 27MAY2023 16:46:16  78.5N    7.3E Mw=4.9  EMSC   SVALBARD REGION

O: 27MAY2023 18:01:45  78.4N    7.0E Mw=3.6  EMSC   SVALBARD REGION              

P: 27MAY2023 153568    74.0N   14.0E 3.0-4.5 ACAAA  Norway                     

 

SOUTHWEST PACIFIC

 

O: 28MAY2023 03:29:54  10.1S  161.2E Mw=5.6  EMSC   SOLOMON ISLANDS              

P: 22MAY2023 153574    10.0S  160.0E 4.0-5.6 CAAAA  No. of Santa Cruz Islands  

 

O: 27MAY2023 05:06:35  24.3S  179.7W mb=4.4  EMSC   SOUTH OF FIJI ISLANDS        

P: 25MAY2023 153598    25.0S  179.0W 4.0-5.6 AAAAA  Tonga Islands              

 

O: 27MAY2023 02:34:54  23.3S  170.6E mb=4.8  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 27MAY2023 153589    23.0S  172.0E 4.0-5.5 AAAAA  Loyalty Islands            

 

OCEAN RIDGES

 

O: 27MAY2023 15:21:47  58.0S   25.7W Mw=5.5  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 28MAY2023 153618    59.0S   26.0W 4.0-6.1 AAAAA  So. Sandwich Islands       

 

O: 27MAY2023 18:07:58  78.4N    7.1E Mw=3.5  EMSC   SVALBARD REGION

O: 27MAY2023 14:24:06  78.5N    7.4E mb=4.4  EMSC   SVALBARD REGION

O: 27MAY2023 16:46:16  78.5N    7.3E Mw=4.9  EMSC   SVALBARD REGION

O: 27MAY2023 18:01:45  78.4N    7.0E Mw=3.6  EMSC   SVALBARD REGION              

P: 27MAY2023 153568    74.0N   14.0E 3.0-4.5 ACAAA  Norway                     

 

 

 

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: 27MAY2023 13:52:12  30.0N  130.0E mb=4.8  EMSC   KYUSHU, JAPAN                

P: 30MAY2023 153418    29.0N  131.0E 4.0-5.4 BAAAA  Kyushu Japan                

 

O: 27MAY2023 21:40:30  35.8N  141.0E ML=3.6  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 27MAY2023 13:49:44  35.6N  140.9E mb=4.4  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 22MAY2023 153465    35.0N  142.0E 4.0-5.5 BAAAA  Off East Coast Honshu       

 

NEIC reported this earthquake of M 4.4 in southeast Honshu, Japan was felt with intensity II-III in the area(s) of southeast Honshu, Japan in Fukushima Prefecture.

 

O: 28MAY2023 07:00:46  42.5N  149.0E ML=4.4  EMSC   OFF COAST OF HOKKAIDO, JAPAN 

P: 27MAY2023 153500    44.0N  148.0E 3.5-5.7 ABAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 27MAY2023 22:10:36  30.3N  115.7W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO      

P: 29MAY2023 153471    31.0N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 27MAY2023 09:31:40  30.6N  114.2W ML=3.5  EMSC   GULF OF CALIFORNIA           

P: 27MAY2023 153468    30.2N  114.1W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 27MAY2023 10:59:48  30.8N  116.2W ML=3.5  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 27MAY2023 16:53:23  30.8N  116.3W ML=3.8  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 27MAY2023 18:23:59  30.7N  116.4W ML=3.3  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 29MAY2023 153471    31.0N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 28MAY2023 08:41:55  32.4N  115.2W Ml=2.6  EMSC   BAJA CALIFORNIA, MEXICO

O: 28MAY2023 08:47:25  32.4N  115.2W Ml=2.0  EMSC   BAJA CALIFORNIA, MEXICO

O: 27MAY2023 05:03:42  32.1N  115.1W Ml=2.3  EMSC   BAJA CALIFORNIA, MEXICO       

P: 29MAY2023 153471    32.4N  115.8W 2.5-4.6 AAAAA  So. California             

 

O: 27MAY2023 22:24:32  36.7N  121.4W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 25MAY2023 153440    36.7N  121.4W 2.5-4.4 AAAAA  Central California         

 

O: 27MAY2023 04:35:26  40.2N  121.1W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 28MAY2023 153516    40.2N  121.2W 2.5-4.5 AAAAA  Northern California        

 

 

ALASKA

 

O: 27MAY2023 17:08:53  58.3N  155.1W ML=3.2  EMSC   ALASKA PENINSULA             

P: 25MAY2023 153533    55.8N  157.7W 3.5-5.4 ACBAA  Alaska Peninsula           

 

O: 27MAY2023 16:49:22  60.3N  153.0W mb=4.6  EMSC   SOUTHERN ALASKA              

P: 25MAY2023 153555    60.3N  153.0W 3.2-5.1 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: 27MAY2023 03:32:06  31.2N  103.5W ML=2.1  EMSC   WESTERN TEXAS

O: 27MAY2023 06:09:08  31.7N  104.3W ML=2.0  EMSC   WESTERN TEXAS

O: 27MAY2023 08:24:28  31.7N  104.3W ML=2.9  EMSC   WESTERN TEXAS                

P: 26MAY2023 153470    31.4N  104.2W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 27MAY2023 10:37:13  44.6N  114.6W Ml=2.5  EMSC   SOUTHERN IDAHO                

O: 27MAY2023 23:14:33  44.8N  114.4W ML=2.5  EMSC   SOUTHERN IDAHO

P: 24MAY2023 153507    44.0N  115.0W 2.0-4.3 BAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 27MAY2023 07:14:31  28.6N   98.3W ML=2.2  EMSC   SOUTHERN TEXAS               

P: 24MAY2023 153422    28.0N   98.0W 3.0-4.4 BAAAA  Northern Mexico            

 

HAWAII

 

O: 28MAY2023 00:04:21  19.3N  155.4W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII

O: 27MAY2023 16:01:31  19.2N  155.4W ML=3.3  EMSC   ISLAND OF HAWAII, HAWAII     

P: 24MAY2023 153393    19.2N  155.1W 3.0-4.9 BAAAA  Hawaii                     

 

 

STRONG EARTHQUAKE SHAKES AREA NEAR TOKYO, JAPAN

 

EARTHQUAKE SUMMARY FOR MAY 26, 2023

 

An M 6.1-6.2 earthquake shook the area of Japan near Tokyo today. NEIC reported it was felt with maximum intensity VI in Chiba, IV in Ibaraki, Saitama, Kanagawa, Tokyo, with lesser shaking in Gunma, Tochigi, Shizuoka, Miyagi, Niigata, Aichi Prefectures. JMA reported intensity IV (Japanese scale) throughout much of the area of southeastern Honshu, Japan. An aftershock of M 4.9 was reported by NEIC to have been felt with intensity III in Chiba and IV in Kochi Prefectures, Japan. This forced a number of bullet trains to stop operations temporarily. A series of earthquakes have occurred in this region of Japan in the past two weeks of M 5.0-5.5 and may have been precursory to today's event. This included an M 5.2 in Chiba Prefecture of May 11, 2023 which injured at least five elderly people in Chiba and two others in Kanagawa Prefecture while doing minor damage to buildings and roofing. At the time this summary noted in this regard:

 

"A moderate earthquake of M 5.2 was widely felt in the region of Tokyo, Japan today. NEIC reported maximum intensity V in Chiba and Kanagawa Prefectures with IV in Tokyo, Saitama, and lesser shaking in Ibaraki and Shizuoka Prefectures, Japan. It caused several injuries to elderly people and minor damage to buildings. The last earthquake within about 200 km of this epicenter near Tokyo, Japan with M>=5.2 was an M 5.0 on October 7, 2021.  At the time this summary note in this regard:

 

 

"Today's event is the first within about 150 km of Tokyo, Japan with M>=5.9 in more than an year - since an M 5.9 on June 24, 2020. The last event of larger magnitude in this area was an M 6.2 five years ago on September 23, 2016." (October 7, 2021)

 

... This activity is located at the seventh node (51.5 degrees) from the major earthquake in Tajikistan of M 7.2 on February 23, 2023  and may have been promoted by energy from that source." (May 11, 2023)

 

Typhoon Mawar is currently south of this epicenter. Mawar is the strongest typhoon to hit the region of Guam and the Mariana Islands in more than two decades and could have influenced the timing of today's earthquake in Japan. In previous issues this summary had noted in this regard:

 

"Typhoon Mawar (02W) continued today in the area of west of Guam with winds up to 165 kts.  It is expected to track to the northwest reaching Taiwan around May 31 as a typhoon with winds up to 165 kts. It is likely that a moderate to strong earthquake could occur near Guam or Taiwan or Southern Japan with this storm in the next week. This appears to be the strongest typhoon to hit Guam in the past two decades." (May 25-27, 2023)

 

Today's earthquake of M 6.1 is the strongest to hit the region within about 150 km of Tokyo since an M 6.2 on September 23, 2016 an event also accompanied by a strong typhoon. The last of M>6.2 in this region occurred as aftershocks of the M 7.9-9.3 earthquake and tsunami of March 11, 2011. On September 23, 2016 this summary noted:

 

"This area has been relatively quiet at M>=6 since the great earthquakes of March, 2011, but did not rupture in those events and probably is still capable of a major earthquake. The last earthquake of M>=6.3 within about 150 km of this epicenter was an M 6.4 on January 19, 2005 and prior to that an M 6.3 on May 29, 2004, the only such earthquakes in the area in the past 25 years, making this a regionally significant earthquake." (September 23, 2016)

 

A great earthquake with M>9 hit near this epicenter on May 27, 1293 - 830 years ago today. It, and an accompanying tsunami reportedly killed more than 22,000 (See HISTORY section of this summary).

 

Forecast 153465 had expected today's event was likely within about 150 km of this epicenter around May 22, 2023. This epicenter is located at the third node (120 degrees) from the M 6.8 in the Prince Edward Islands of May 21, 2023 and at the seventh node (52 degrees) from the M 7.3 in Sumatra of April 24, 2024 and the M 7.2 in Tajikistan of February 23, 2023 and may have been promoted by energy from those sources.

 

O: 26MAY2023 11:07:39  35.5N  140.7E mb=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 26MAY2023 12:01:50  35.5N  140.8E mb=4.6  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 26MAY2023 10:03:24  35.6N  140.5E Mw=6.1  EMSC   NEAR EAST COAST OF HONSHU, JAP

O: 26MAY2023 10:03:24  35.6N  140.5E Mw=6.2  JMA    NEAR EAST COAST OF HONSHU, JAP

O: 26MAY2023 10:03:24  35.6N  140.7E Mw=6.2  CENC   NEAR EAST COAST OF HONSHU, JAP

P: 22MAY2023 153465    35.0N  142.0E 4.0-5.5 BAAAA  Off East Coast Honshu      

 

Moderately large to large earthquakes also occurred in the West Chile Rise and in the Tonga Islands with M 5.9 and 6.0 today. These events were lightly felt in their respective epicentral area but did not do any damage that was reported.

 

The last similar earthquake in the West Chile Rise was an M 5.8 on October 31, 2022. This summary noted this event at the time as:

 

 

"The strongest earthquake in the world today was an M 5.8-6.0 in the West Chile Rise. It was not reported felt in this remote area. This is the strongest earthquake within about 250 km of this epicenter since an M 5.9 on May 20, 2010. The only other such event in the area in the past 30 years was an M 5.8-6.0 on June 5, 2008." (November 1, 2022) 

 

The last earthquake with M>=5.9 in the West Chile Rise within about 300 km

of today's epicenter was an M 5.9-6.0 on June 5, 2008, the only such event in the area in the past 35 years. Forecast 153609 had expected enhanced seismicity in the Chile Rise was likely around May 27.

 

 

O: 26MAY2023 22:18:25  39.1S   91.5W Mw=5.9  EMSC   WEST CHILE RISE              

P: 27MAY2023 153609    43.0S   83.0W 4.0-5.7 ACCAA  Chile Rise                 

 

The M 6.0 in Tonga today continued activation of that area which included an M 7.6 in northern Tonga near Samoa on May 10, 2023. It is the strongest earthquake within about 150 km of this epicenter since an M 6.3 a year ago on June 4, 2022 and an M 6.5 on April 24, 2021.  Forecast 153581 had expected today's event within about 100 km was likely around May 29, 2023. This epicenter is at 145 degrees from the M 7.8 in Turkey of February 6, 2023 and at 100 degrees from the M 6.7 in Colombia of May 25, 2023 and at the fifth node (72 degrees) from the M 7.0 in Java of April 14, 2023 and may have been promoted by energy from those sources.

 

O: 27MAY2023 00:11:01  18.4S  175.3W Mw=6.0  EMSC   TONGA                        

P: 29MAY2023 153581    18.0S  174.0W 4.0-5.6 AAAAA  Tonga Islands              

 

The strongest earthquake in the U.S. or Canada today was an M 4.1 aftershock in the region of Northern California.  NEIC reported this earthquake of M 4.1 in Northern California was felt with intensity II-III in the area(s) of Northern California in Canyon Dam and Westwood (IV) and in Chester, Greenville, Crescent Mills, Mineral, Quincy, Meadow Valley and Magalia among others.

This is the strongest aftershock of the M 5.5 in Northern California of May 11, 2023 since the  M 5.2 on May 12, 2023.  Forecast 153516 had expected today's event within about 10 km was likely around May 28.

 

 

O: 26MAY2023 11:37:21  40.2N  121.2W Md=2.4  EMSC   NORTHERN CALIFORNIA

O: 26MAY2023 12:19:20  40.2N  121.2W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 26MAY2023 12:34:01  40.2N  121.2W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 26MAY2023 17:51:28  40.2N  121.2W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 27MAY2023 00:14:26  40.2N  121.1W MD=2.7  EMSC   NORTHERN CALIFORNIA

O: 27MAY2023 04:35:26  40.2N  121.1W Md=2.3  EMSC   NORTHERN CALIFORNIA

O: 26MAY2023 11:26:25  40.2N  121.2W ML=4.1  EMSC   NORTHERN CALIFORNIA          

P: 28MAY2023 153516    40.2N  121.2W 2.5-4.5 AAAAA  Northern 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: 27MAY2023 06:00:00  28.2N   51.2E ML=4.0  EMSC   SOUTHERN IRAN                

P: 27MAY2023 153425    29.0N   51.0E 3.5-5.2 AAAAA  So. Iran/Persian Gulf      

 

O: 26MAY2023 12:41:57  24.5N  122.7E ML=4.0  EMSC   TAIWAN REGION                

O: 26MAY2023 19:56:18  23.9N  121.7E ML=4.0  TAI    Hualien, Taiwan              

P: 27MAY2023 153427    24.0N  123.0E 4.0-5.4 AAAAA  Taiwan                      

 

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

 

O: 26MAY2023 08:08:01  39.8N   75.1E mb=4.4  EMSC   SOUTHERN XINJIANG, CHINA     

P: 27MAY2023 153503    40.0N   75.0E 4.0-5.5 AAAAA  Kirgizstan/Xinjiang        

 

O: 27MAY2023 06:48:12  54.4N  163.8E mb=4.0  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 27MAY2023 153542    55.0N  163.0E 4.0-5.7 AAAAA  Komandorsky Isl            

 

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

 

INDONESIA AND PHILIPPINES

 

 

O: 26MAY2023 09:37:36   2.2N   96.2E ML=4.1  EMSC   SIMEULUE, INDONESIA          

P: 27MAY2023 153358     2.0N   96.0E 4.0-5.7 AAAAA  Nicobar Islands            

 

O: 26MAY2023 21:34:01   5.1S  131.2E mb=5.1  EMSC   BANDA SEA                    

P: 27MAY2023 153382     6.0S  131.0E 4.0-5.4 AAAAA  West Irian, PNG            

 

O: 27MAY2023 03:45:35   8.3S  119.7E ML=4.2  EMSC   FLORES REGION, INDONESIA     

P: 25MAY2023 153366     8.0S  122.0E 4.0-5.7 AABAA  Flores Island area         

P: 29MAY2023 153366     7.0S  121.0E 4.0-5.8 ABAAA  Flores Island area         

 

O: 27MAY2023 05:52:47   8.4N  126.6E mb=4.5  EMSC   MINDANAO, PHILIPPINES        

P: 26MAY2023 153351     9.0N  126.0E 4.0-5.7 AAAAA  Central Philippines         

 

O: 27MAY2023 06:00:14   9.0S  113.0E ML=4.4  EMSC   SOUTH OF JAVA, INDONESIA     

P: 24MAY2023 153374     9.0S  113.0E 4.0-5.6 BAAAA  So. of Bali                

 

O: 26MAY2023 21:30:22   9.6S  118.5E ML=4.1  EMSC   SUMBAWA REGION, INDONESIA    

P: 24MAY2023 153381     9.0S  118.0E 4.0-5.4 AAAAA  Sumbawa Island area        

 

CENTRAL AND SOUTH AMERICA

 

O: 27MAY2023 00:56:36   5.8N   79.7W mb=4.4  EMSC   SOUTH OF PANAMA              

P: 27MAY2023 153352     7.0N   78.0W 4.0-5.9 ABBAA  Colombia                    

 

O: 26MAY2023 07:43:31  11.3S   79.0W ML=4.0  EMSC   OFF COAST OF CENTRAL PERU    

P: 23MAY2023 153371     9.0S   81.0W 4.0-5.6 BCBAA  No. Peru                   

 

O: 27MAY2023 06:01:11   9.3N   75.3W mb=4.5  EMSC   NEAR NORTH COAST OF COLOMBIA 

P: 27MAY2023 153352     7.0N   78.0W 4.0-5.9 ACCAA  Colombia                   

 

O: 26MAY2023 22:22:32  17.3N   94.7W ML=4.0  EMSC   VERACRUZ, MEXICO             

P: 28MAY2023 153387    17.0N   95.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 26MAY2023 13:42:32  18.7S   66.9W mb=4.8  EMSC   ORURO, BOLIVIA               

P: 29MAY2023 153578    18.0S   69.0W 4.0-5.6 BABAA  So. Peru/Bolivia           

 

O: 27MAY2023 02:09:17  19.4N   65.7W Md=3.9  EMSC   PUERTO RICO REGION           

O: 27MAY2023 05:24:45  19.5N   66.3W ML=3.6  EMSC   PUERTO RICO REGION

O: 27MAY2023 04:51:40  19.6N   66.3W Md=3.7  EMSC   PUERTO RICO REGION

P: 23MAY2023 153395    19.0N   65.0W 3.0-5.5 BAAAA  Leeward Islands            

 

O: 26MAY2023 21:39:30  27.5N  111.5W ML=3.4  EMSC   GULF OF CALIFORNIA

O: 26MAY2023 16:48:52  27.5N  111.5W ML=3.9  EMSC   GULF OF CALIFORNIA           

P: 30MAY2023 153415    25.0N  113.0W 3.5-5.0 BCBAA  Gulf of California         

 

 

AFRICA AND EUROPE

 

 

O: 26MAY2023 18:38:49  49.5N   34.1E ML=4.0  EMSC   UKRAINE                      

 

SOUTHWEST PACIFIC

 

O: 27MAY2023 00:11:01  18.4S  175.3W Mw=6.0  EMSC   TONGA                        

P: 29MAY2023 153581    18.0S  174.0W 4.0-5.6 AAAAA  Tonga Islands              

 

O: 26MAY2023 11:42:18  23.2S  170.7E mb=4.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 27MAY2023 153589    23.0S  172.0E 4.0-5.5 AAAAA  Loyalty Islands            

 

O: 27MAY2023 05:06:38  24.2S  179.7E mb=4.4  EMSC   SOUTH OF FIJI ISLANDS        

P: 22MAY2023 153599    24.0S  179.0E 4.0-5.5 BAAAA  Tonga/Fiji                 

 

OCEAN RIDGES

 

O: 26MAY2023 22:18:25  39.1S   91.5W Mw=5.9  EMSC   WEST CHILE RISE              

P: 27MAY2023 153609    43.0S   83.0W 4.0-5.7 ACCAA  Chile Rise                 

 

O: 26MAY2023 21:33:48  43.2S   39.2E mb=5.0  EMSC   PRINCE EDWARD ISLANDS REGION 

P: 22MAY2023 153611    41.0S   43.0E 4.0-5.8 BCCAA  So. Indian 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: 26MAY2023 11:07:39  35.5N  140.7E mb=4.3  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 26MAY2023 12:01:50  35.5N  140.8E mb=4.6  EMSC   NEAR EAST COAST OF HONSHU, JAPAN

O: 26MAY2023 10:03:24  35.6N  140.5E Mw=6.1  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 22MAY2023 153465    35.0N  142.0E 4.0-5.5 BAAAA  Off East Coast Honshu      

 

O: 26MAY2023 14:24:57  46.2N  152.9E mb=4.5  EMSC   KURIL ISLANDS                

P: 24MAY2023 153527    45.0N  150.0E 3.5-5.4 ABBAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 26MAY2023 15:45:09  30.8N  116.3W ML=3.6  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 26MAY2023 08:14:53  30.9N  116.2W ML=3.5  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 26MAY2023 08:21:17  30.9N  116.2W ML=3.7  EMSC   BAJA CALIFORNIA, MEXICO

O: 26MAY2023 08:02:37  30.8N  116.2W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 29MAY2023 153471    31.0N  116.3W 2.5-4.8 BAAAA  So. California              

 

O: 27MAY2023 05:03:42  32.1N  115.1W Ml=2.3  EMSC   BAJA CALIFORNIA, MEXICO      

P: 29MAY2023 153471    32.4N  115.8W 2.5-4.6 AAAAA  So. California             

 

O: 26MAY2023 08:23:15  32.7N  116.3W Ml=2.1  EMSC   SOUTHERN CALIFORNIA           

P: 25MAY2023 153473    33.0N  115.9W 2.5-4.6 AAAAA  So. California             

 

O: 26MAY2023 11:38:13  34.4N  116.5W ML=2.6  EMSC   SOUTHERN CALIFORNIA          

P: 25MAY2023 153477    34.6N  116.7W 2.5-4.9 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.6 in Southern California was felt with intensity II-III in the area(s) of Southern California in Landers.

 

O: 27MAY2023 00:28:20  35.2N  116.9W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 25MAY2023 153478    35.1N  117.0W 2.5-4.6 AAAAA  So. California             

 

O: 26MAY2023 10:57:23  35.3N  119.4W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P: 30MAY2023 153476    35.0N  119.2W 2.5-4.9 BAAAA  So. California             

 

O: 27MAY2023 00:35:51  36.1N  117.9W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P: 27MAY2023 153432    36.2N  117.9W 2.5-5.0 AAAAA  California/Nevada area     

 

O: 26MAY2023 09:33:16  40.4N  125.4W Ml=3.1  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 29MAY2023 153518    40.5N  125.8W 2.5-4.4 BAAAA  Off Coast of No. Calif     

 

 

O: 26MAY2023 23:26:30  36.8N  121.2W Md=2.2  EMSC   CENTRAL CALIFORNIA

O: 26MAY2023 15:43:06  36.5N  121.1W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 25MAY2023 153440    36.7N  121.4W 2.5-4.4 AAAAA  Central California         

 

O: 26MAY2023 20:39:01  38.6N  119.8W ML=3.1  EMSC   NORTHERN CALIFORNIA

O: 26MAY2023 20:45:48  38.6N  119.8W MD=2.6  EMSC   NORTHERN CALIFORNIA

O: 26MAY2023 20:51:35  38.6N  119.8W MD=2.2  EMSC   NORTHERN CALIFORNIA          

P: 27MAY2023 153437    38.8N  119.6W 2.5-4.6 AAAAA  California/Nevada area     

 

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

 

O: 26MAY2023 11:37:21  40.2N  121.2W Md=2.4  EMSC   NORTHERN CALIFORNIA

O: 26MAY2023 12:19:20  40.2N  121.2W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 26MAY2023 12:34:01  40.2N  121.2W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 26MAY2023 17:51:28  40.2N  121.2W Md=2.2  EMSC   NORTHERN CALIFORNIA

O: 27MAY2023 00:14:26  40.2N  121.1W MD=2.7  EMSC   NORTHERN CALIFORNIA

O: 27MAY2023 04:35:26  40.2N  121.1W Md=2.3  EMSC   NORTHERN CALIFORNIA

O: 26MAY2023 11:26:25  40.2N  121.2W ML=4.1  EMSC   NORTHERN CALIFORNIA          

P: 28MAY2023 153516    40.2N  121.2W 2.5-4.5 AAAAA  Northern California        

 

O: 27MAY2023 00:55:19  40.4N  124.7W ML=2.5  EMSC   OFFSHORE NORTHERN CALIFORNIA

 

ALASKA

 

O: 26MAY2023 09:44:02  52.9N  168.0W ml=3.8  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 28MAY2023 153541    52.5N  169.2W 3.5-5.1 AAAAA  Fox Islands, Aleutians     

 

O: 26MAY2023 08:12:08  65.8N  155.8W ML=3.6  EMSC   NORTHERN ALASKA              

P: 23MAY2023 153560    63.1N  151.9W 3.2-4.9 BCCAA  Central Alaska             

 

NEIC reported this earthquake of M 3.4 in Northern Alaska was felt with intensity II-III in the area(s) of Northern Alaska in Huslia.

 

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: 26MAY2023 14:51:25  31.6N  104.0W ML=3.1  EMSC   WESTERN TEXAS

O: 26MAY2023 16:08:41  31.6N  104.2W ML=2.4  EMSC   WESTERN TEXAS

O: 27MAY2023 06:09:08  31.7N  104.3W ML=2.0  EMSC   WESTERN TEXAS

O: 27MAY2023 03:32:06  31.2N  103.5W ML=2.1  EMSC   WESTERN TEXAS                 

P: 26MAY2023 153470    31.4N  104.2W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 26MAY2023 19:39:15  32.3N  101.8W ML=2.4  EMSC   WESTERN TEXAS

O: 26MAY2023 20:06:59  32.3N  101.8W ML=2.5  EMSC   WESTERN TEXAS

O: 26MAY2023 18:07:02  32.1N  102.0W ML=2.0  EMSC   WESTERN TEXAS                

P: 26MAY2023 153470    31.4N  104.2W 2.0-4.1 AABAA  SW U.S.A                   

 

O: 26MAY2023 12:21:08  44.8N  114.4W Ml=2.0  EMSC   SOUTHERN IDAHO               

P: 24MAY2023 153507    44.0N  115.0W 2.0-4.3 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 26MAY2023 14:45:39  34.0N   97.3W ML=2.3  EMSC   OKLAHOMA                     

P: 24MAY2023 153485    35.0N   97.0W 2.0-4.0 AAAAA  Southern Plains            

 

O: 26MAY2023 05:04:59  47.2N   81.9W MB=2.2  ECAN of Gogama, ON                  

P: 28MAY2023 153520    49.0N   81.0W 2.0-4.1 ABAAA  Ohio/Lake Erie             

 

HAWAII

 

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

 

MODERATE AFTERSHOCKS CONTINUE IN LOYALTY ISLANDS

 

EARTHQUAKE SUMMARY FOR MAY 25, 2023

 

The strongest earthquakes in the world today was an M 5.5 aftershock in the Loyalty Islands. This earthquake was not reported felt in the epicentral area. It is an aftershock of the M 7.8 in the Loyalty Islands of May 19, 2023. It  occurred within minutes of local solar midnight and may have been promoted by high tidal stresses which maximize near this hour. Forecast 153589 had expected today's event was likely around May 27.

 

O: 25MAY2023 12:59:14  22.8S  171.3E mb=4.7  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 27MAY2023 153589    23.0S  172.0E 4.0-5.5 AAAAA  Loyalty Islands            

 

EMSC reported an M 3.6 in Michigan today, but this could not be confirmed with NEIC data. The last earthquake to have occurred in the State of Michigan was an M 2.4 on July 11, 2022 about 500 km south of today's epicenter. The last earthquake within about 200 km of today's epicenter was an M 3.8 on August 5, 2014. At the time this summary noted: 

 

"A light earthquake of M 3.8 in Ontario, Canada was also widely felt today. NEIC reported intensity II in Rochester, New York nearly 500 km from the epicenter. Intensity III was felt in Ontario at Onaping-Levack and Sudbury. The Sudbury Star (online) reported the larger event was preceded by an M 3.3 about 23 minutes earlier. The quake was felt across Sudbury but especially in the north. This is the strongest earthquake in the Sudbury area in at least 25 years. An M 3.1 hit the area on September 26, 2001. As these are genuine earthquakes, they compare in size with mining-related earthquakes four of which have reach M 3.8 in the area in the past 25 years. This is the first earthquake to reach this magnitude in this time however." (August 5, 2014)

 

Forecast 153246 had expected this event within this area was likely around

May 19.

 

O: 25MAY2023 19:07:57  46.0N   83.8W ML=3.6  EMSC   MICHIGAN                     

P: 19MAY2023 153246    46.0N   81.0W 2.0-4.5 CABAA  Ohio/Lake Erie             

 

 

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: 25MAY2023 13:48:30  21.1N  122.2E Mw=5.2  EMSC   TAIWAN REGION                

P: 24MAY2023 153426    21.0N  120.0E 4.0-5.4 AABAA  Taiwan                     

 

O: 26MAY2023 02:34:48  38.0N   73.2E mb=4.3  EMSC   TAJIKISTAN                    

P: 26MAY2023 153451    38.0N   73.0E 3.8-5.3 AAAAA  Hindu Kush/Pakistan        

 

INDONESIA AND PHILIPPINES

 

 

O: 25MAY2023 22:37:58   1.4N   97.1E mb=4.8  EMSC   NIAS REGION, INDONESIA       

P: 27MAY2023 153358     2.0N   96.0E 4.0-5.7 AAAAA  Nicobar Islands            

 

NEIC reported this earthquake of M 4.8 in Nias, Indonesia was felt with intensity II-III in the area(s) of Nias, Indonesia in Gunung, Stoli.

 

O: 25MAY2023 20:02:58   2.9N  128.5E ML=4.0  EMSC   HALMAHERA, INDONESIA         

P: 28MAY2023 153355     3.0N  129.0E 4.0-5.4 BAAAA  Halmahera                  

 

O: 25MAY2023 18:25:46   3.5N  125.6E ML=4.1  EMSC   KEPULAUAN SANGIHE, INDONESIA 

P: 27MAY2023 153356     2.0N  125.0E 4.0-5.4 ABAAA  Mindanao, Philippines      

 

O: 25MAY2023 16:37:59   5.6S  103.3E ML=4.0  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 27MAY2023 153375     6.0S  104.0E 4.0-5.5 AAAAA  So. of Java                

 

O: 26MAY2023 02:08:01   6.1S  149.9E Mw=5.2  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 27MAY2023 153370     6.0S  150.0E 4.0-5.4 AAAAA  New Ireland                

 

NEIC reported this earthquake of M 5.2 in New Britain was felt with intensity II-III in the area(s) of New Britain in Kimbe.

 

O: 25MAY2023 19:10:08   7.0S  128.0E ML=4.4  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 28MAY2023 153361     7.0S  128.0E 4.0-5.5 BAAAA  Banda Sea                  

 

O: 25MAY2023 12:21:08   7.9S  123.2E mb=5.1  EMSC   BANDA SEA                    

P: 25MAY2023 153366     8.0S  122.0E 4.0-5.7 AABAA  Flores Island area          

P: 27MAY2023 153366     9.0S  124.0E 4.0-5.5 ABAAA  Flores Island area         

 

O: 25MAY2023 15:26:22  12.3N  123.9E mb=4.8  EMSC   MASBATE REGION, PHILIPPINES  

P: 26MAY2023 153396    12.0N  122.0E 3.5-5.0 AABAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 4.8 in Masbate, Philippines was felt with intensity II-III in the area(s) of Masbate, Philippines in Bicol at Cataingan and Recodo and in the Central Visayas at Mandawa.

 

CENTRAL AND SOUTH AMERICA

 

O: 26MAY2023 03:17:03   8.8N   77.2W ML=4.5  EMSC   PANAMA-COLOMBIA BORDER REGION

O: 25MAY2023 08:47:20   8.9N   77.1W mb=4.4  EMSC   PANAMA-COLOMBIA BORDER REGION

O: 25MAY2023 09:02:05   8.9N   77.1W mb=4.5  EMSC   PANAMA-COLOMBIA BORDER REGION

O: 25MAY2023 19:46:26   9.0N   77.2W ML=4.2  EMSC   PANAMA-COLOMBIA BORDER REGION

O: 25MAY2023 07:04:31   8.8N   77.1W ML=4.0  EMSC   PANAMA-COLOMBIA BORDER REGION

P: 27MAY2023 153352     7.0N   78.0W 4.0-5.9 ABAAA  Colombia                   

 

O: 25MAY2023 20:20:12  17.7S   69.6W ML=4.4  EMSC   TARAPACA, CHILE              

P: 29MAY2023 153578    18.0S   69.0W 4.0-5.6 BAAAA  So. Peru/Bolivia           

 

O: 26MAY2023 01:29:51  18.5N  101.2W ML=4.0  EMSC   MICHOACAN, MEXICO            

P: 23MAY2023 153400    19.0N  102.0W 3.5-5.3 BAAAA  Michoacan, Mexico          

 

O: 25MAY2023 22:45:01  19.3N   68.2W Md=3.4  EMSC   DOMINICAN REPUBLIC REGION    

P: 22MAY2023 153412    20.0N   68.0W 3.0-4.7 BAAAA  Bahamas/No. Caribbean      

 

O: 25MAY2023 09:09:07  19.6N   65.8W Md=3.2  EMSC   PUERTO RICO REGION           

O: 25MAY2023 14:40:31  19.6N   65.8W Md=3.3  EMSC   PUERTO RICO REGION

O: 25MAY2023 12:32:46  19.7N   65.8W Md=3.9  EMSC   PUERTO RICO REGION

O: 25MAY2023 12:51:07  19.7N   65.8W Md=3.5  EMSC   PUERTO RICO REGION

P: 23MAY2023 153395    19.0N   65.0W 3.0-5.5 AAAAA  Leeward Islands            

 

 

AFRICA AND EUROPE

 

 

O: 25MAY2023 07:21:30  35.9N   35.5E mb=4.1  EMSC   NEAR THE COAST OF SYRIA      

O: 25MAY2023 10:47:01  35.9N   35.6E mb=4.2  EMSC   NEAR THE COAST OF SYRIA      

P: 25MAY2023 153488    38.0N   36.0E 3.5-5.3 ACAAA  Turkey                     

 

O: 25MAY2023 15:02:06  38.1N   38.6E ML=4.2  EMSC   EASTERN TURKEY               

P: 24MAY2023 153488    38.0N   39.0E 3.5-5.1 AAAAA  Turkey                     

 

O: 25MAY2023 19:02:45  44.2N   39.0E ML=4.0  EMSC   CAUCASUS REGION, RUSSIA      

P: 18MAY2023 153222    40.0N   41.0E 3.5-4.9 CCBAA  Caucasus/Caspian Sea       

 

SOUTHWEST PACIFIC

 

O: 25MAY2023 10:39:38  23.2S  170.8E Mw=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

 

OCEAN RIDGES

 

O: 25MAY2023 23:55:25  49.2S  120.6E mb=4.8  EMSC   WESTERN INDIAN-ANTARCTIC RIDGE

O: 25MAY2023 16:11:39  49.6S  116.2E mb=4.6  EMSC   WESTERN INDIAN-ANTARCTIC RIDGE

 

O: 25MAY2023 16:34:00  59.6S   26.3W mb=5.1  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 28MAY2023 153618    59.0S   26.0W 4.0-6.1 BAAAA  So. Sandwich Islands       

 

 

ZEALANDIA AND AUSTRALIA REGION

 

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

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

 

JAPAN AND KURIL ISLANDS

 

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

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 25MAY2023 09:50:43  30.8N  116.3W ML=3.4  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 25MAY2023 09:57:33  30.8N  116.2W ML=3.3  EMSC   FFSHORE BAJA CALIFORNIA, MEXICO

O: 25MAY2023 19:45:07  30.9N  116.1W ML=3.8  EMSC   BAJA CALIFORNIA, MEXICO

O: 25MAY2023 20:11:53  30.9N  116.2W ML=3.5  EMSC   OFFSHORE BAJA CALIFORNIA, MEXICO

O: 25MAY2023 20:46:07  30.9N  116.1W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO

O: 25MAY2023 21:33:32  31.1N  115.7W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO

O: 25MAY2023 09:08:29  31.3N  115.6W ML=3.1  EMSC   BAJA CALIFORNIA, MEXICO

O: 25MAY2023 22:59:48  31.4N  115.6W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO

O: 25MAY2023 09:53:22  30.7N  116.3W ML=3.5  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 24MAY2023 153468    30.8N  116.3W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 25MAY2023 12:50:16  29.9N  114.2W ML=4.3  EMSC   GULF OF CALIFORNIA            

P: 27MAY2023 153468    30.2N  114.1W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 25MAY2023 17:47:47  34.4N  118.5W Ml=2.2  EMSC   GREATER LOS ANGELES AREA, CALI

P: 25MAY2023 153476    34.3N  118.5W 2.5-4.8 AAAAA  So. California             

 

O: 25MAY2023 13:54:03  36.0N  117.7W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P: 25MAY2023 153432    36.1N  118.1W 2.5-5.0 AAAAA  California/Nevada area     

 

O: 25MAY2023 14:38:29  36.8N  120.9W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 25MAY2023 153440    36.7N  121.4W 2.5-4.4 AAAAA  Central California         

 

O: 25MAY2023 21:42:36  37.2N  114.9W ml=2.4  EMSC   NEVADA                       

P: 21MAY2023 153436    38.7N  115.4W 2.5-4.9 BBAAA  California/Nevada area     

 

O: 25MAY2023 10:42:34  37.4N  118.5W Md=2.5  EMSC   CENTRAL CALIFORNIA           

P: 24MAY2023 153434    37.4N  118.6W 2.5-4.8 AAAAA  California/Nevada area     

 

O: 25MAY2023 21:38:50  37.8N  122.1W Md=2.1  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O: 25MAY2023 18:18:41  38.0N  121.8W Md=2.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 24MAY2023 153442    37.9N  122.0W 2.5-4.4 AAAAA  Central California         

 

ALASKA

 

O: 25MAY2023 23:44:18  55.4N  159.3W ML=3.7  EMSC   ALASKA PENINSULA             

P: 23MAY2023 153533    54.8N  158.7W 3.5-5.4 AAAAA  Alaska Peninsula           

 

O: 25MAY2023 08:52:46  58.6N  153.4W ML=3.0  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 25MAY2023 153555    60.3N  153.0W 3.2-5.1 ABAAA  Central Alaska             

 

O: 26MAY2023 02:17:58  61.7N  150.9W Mw=4.2  EMSC   SOUTHERN ALASKA              

P: 23MAY2023 153557    61.2N  151.2W 3.2-5.1 BAAAA  Central Alaska             

 

NEIC reported this earthquake of M 4.1 in Southern Alaska was felt with intensity II-III in the area(s) of Southern Alaska in iWillow, Wasilla, Talkeetna, Anchorage.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 25MAY2023 12:54:32  60.0N  140.4W ML=3.9  EMSC   SOUTHERN YUKON TERRITORY, CANA

O: 26MAY2023 02:57:51  60.0N  140.4W mb=3.9  EMSC   SOUTHERN YUKON TERRITORY, CANADA

P: 26MAY2023 153551    58.0N  136.0W 3.0-4.4 ABBAA  Southeast Alaska           

O: 25MAY2023 12:54:05  60.0N  140.4W MB=4.0  ECAN of Yakutat, AK   

 

ROCKY MOUNTAINS REGION

 

O: 25MAY2023 18:27:43  31.6N  104.0W ML=2.4  EMSC   WESTERN TEXAS

O: 26MAY2023 05:34:58  31.6N  104.0W ML=2.6  EMSC   WESTERN TEXAS

O: 25MAY2023 09:29:51  31.7N  104.6W ML=3.5  EMSC   WESTERN TEXAS

O: 25MAY2023 08:34:16  31.6N  104.0W ML=2.1  EMSC   WESTERN TEXAS                

P: 26MAY2023 153470    31.4N  104.2W 2.0-4.1 AAAAA  SW U.S.A                    

 

NEIC reported this earthquake of M 3.5 in Western Texas was felt with intensity II-III in the area(s) of Western Texas in El Paso.

 

EASTERN U.S./CANADA

 

O: 25MAY2023 22:27:55  35.6N   82.9W mb=2.1  EMSC   NORTH CAROLINA                

P: 23MAY2023 153453    35.0N   83.0W 2.0-4.1 AAAAA  Kentucky/Tennessee/NC      

 

O: 25MAY2023 19:07:57  46.0N   83.8W ML=3.6  EMSC   MICHIGAN                     

P: 19MAY2023 153246    46.0N   81.0W 2.0-4.5 CABAA  Ohio/Lake Erie             

 

HAWAII

 

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

 

STRONG EARTHQUAKE SHAKES PANAMA AND COLOMBIA

 

EARTHQUAKE SUMMARY FOR MAY 24, 2023

 

 

The strongest earthquake in the world today was an M 6.6 on the Panama-Colombia border. NEIC reported it was felt in Colombia with maximum intensity IV in Acandi Choco and in Necocli, Antioquia and in Panama with VI in Meteti, Darien. Intensity V in Panama was felt in Las Cumbres with IV in Santa Fe, Darien. Intensity III was reported in Colombia at San Bernardo Viento Cordoba, Cartagena, Bolivar and in Panama at San Miguelito and Panama City among other communities. Residents of Medellin and Cali also reported feeling the earthquake. This earthquake is located in the Darien Gap where thousands of migrants congregate on their migration to the north. While the area is densely populated with migrants and is dense jungle, some damage and injuries may have been incurred in this quake. The antipode of this earthquake is in southern Sumatra, Indonesia at 7S 103E, an active seismic zone near the M 7.3 in Sumatra of April 24, 2023 and the M 7.0 in Java of April 14, 23 and this activity may have been promoted by energy from that source. In recent days the antipode south of Sumatra has been active and a triggered moderate to large earthquake in this area in the next several days is possible.

 

When the M 7.3 in Sumatra occurred a month ago on April 24, this summary contemplated the effect on the relation between seismicity in Colombia and Sumatra as:

 

"The M 8+ in Sumatra on September 13, 2007 followed an M 7.0 in Colombia the day before and was considered as an antipodal aftershock of that event." (April 24, 2023)

 

and prior to that:

 

 

"A moderate earthquake occurred in northern Colombia today with M 5.5. Moderately large earthquakes in Colombia are often associated with enhanced seismicity near the antipode in the region of Sumatra, Indonesia. A moderately large to large earthquake is likely in the next several days in that region due to antipodal triggering. This is most likely at local solar noon of local solar midnight with high earth tides which maximize near this hour." (February 23, 2022)

 

and following an M 6.8 in Sumatra of November 18, 2022 it was noted:

 

"... This earthquake is located at the antipode of the M 6.8 south of Panama of October 20, 2022 and was probably promoted by energy from that source focused at the antipode." (November 18, 2022)

 

Today's event occurred near local solar midnight and may also have been promoted by strong tidal stresses with the new moon of May 19 as noted in this summary:

 

"The new moon arrived on May 19, 2023 at 15:53 UT. Longitudes at local solar solar midnight were near 126 East and those at local solar noon are near 54 West longitude. In the west these include the northern and Eastern Caribbean as well as areas of western South America while in the East longitudes near 126 E are located in the Philippines, Taiwan, Japan, and Indonesia among others. These are the most likely areas to see tidal triggering at this time, but other areas could see significant enhancement in seismicity in the next several days. These would most likely see seismic enhancement near local solar noon or midnight. A strong to major earthquake is considered likely with this new moon before May 25, 2023. (May 18-24, 2023)

 

The last earthquake in Colombia within about 250 km of this epicenter with M>=6.6 occurred on October 17 and October 18, 1992 with M 6.7 and 7.2, the only such events in the area in the past 35 years.  Forecast 153352 had expected today's event in this region was likely around May 27,  2023 in the area of Colombia. This epicenter is also at 103 degrees from the M 7.8 in Turkey of February 6, 2023 and the M 7.2 in the Kermadec Islands of April 24, 2023 and near this distance from the M 7.6 in Tonga of May 10 and the M 7.8 in the Loyalty Islands of May 19 and may have been promoted by energy from those sources.

 

O: 25MAY2023 03:05:34   8.9N   77.1W Mw=6.6  EMSC   PANAMA-COLOMBIA BORDER REGION

O: 25MAY2023 03:14:59   8.9N   77.1W mb=4.9  EMSC   PANAMA-COLOMBIA BORDER REGION

O: 25MAY2023 06:48:30   8.9N   77.1W mb=4.6  EMSC   PANAMA-COLOMBIA BORDER REGION

O: 25MAY2023 03:16:26   8.6N   77.2W ML=4.1  EMSC   PANAMA-COLOMBIA BORDER REGION

P: 27MAY2023 153352     7.0N   78.0W 4.0-5.9 ABAAA  Colombia                   

 

A large earthquake also occurred today as an M 6.2 in the Banda Sea, Indonesia. NEIC reported it was felt with intensity III in Dili, East Timor and Pringsewu, Lampung, Indonesia and in Northern Territory, Australia with maximum intensity IV in Coonawarra and II-III in Darwin, Howard Springs, Humpty Doo-MacMinns Lagoon and Katherine. Like the earthquake in Colombia today, this epicenter at 130 East Longitude occurred at the longitude of maximum tidal stresses with the past new moon and may have been promoted by tidal energy associated with that tidal alignment (see above). This earthquake occurred near local solar midnight intensifying the tidal effect. This is the strongest earthquake in the Banda Sea within about 250 km of this epicenter since the M 7.6 on January 9, 2023 and is the largest aftershock to day of that event.  Forecast 153382 had expected today's event within about 50 km was likely around May 24, 2023. This epicenter is located at the sixth node from the M 7.2 in Tajikistan of February 23, 2023 and at the fourth node (90 degrees) from the M 6.8 in the Prince Edward Islands of May 19 and may have been promoted by energy from those sources.

 

O: 24MAY2023 15:49:35   7.0S  129.5E Mw=6.2  EMSC   BANDA SEA                    

P: 24MAY2023 153382     7.0S  130.0E 4.0-5.6 AAAAA  West Irian, PNG             

 

A moderate earthquake of M 5.5 also occurred today in the Pacific-Antarctic Ridge. It was not reported felt in this remote area. The last earthquake within about 300 km of this epicenter on the Pacific-Antarctic Ridge with M>=5.5 occurred on March 14, 2023 with M 5.5 and prior to that as an M 5.7 on June 24, 2022. This epicenter is near the seventh node (51 degrees) from recent major earthquakes in the Loyalty Islands. This epicenter is at 103-104 degrees from the M 7.3 in Sumatra of April 24, 2023 and at the fifth node (72 degrees) from the event of M 6.7 in Ecuador of March 18, 2023 and may have been promoted by energy from those sources as well.

 

O: 24MAY2023 10:33:23  57.0S  140.8W Mw=5.5  EMSC   PACIFIC-ANTARCTIC RIDGE      

 

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 25MAY2023 04:57:58  28.4N  104.5E mb=4.4  EMSC   EASTERN SICHUAN, CHINA       

P: 24MAY2023 153420    27.0N  104.0E 4.0-5.6 ABAAA  Myanmar                    

 

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

 

INDONESIA AND PHILIPPINES

 

O: 24MAY2023 23:09:33   1.0S   98.5E ML=4.0  EMSC   KEPULAUAN BATU, INDONESIA    

P: 27MAY2023 153377     2.0S   99.0E 4.0-5.4 BAAAA  So. of Sumatera            

 

O: 25MAY2023 00:08:30   1.3N  126.5E ML=4.5  EMSC   MOLUCCA SEA                   

P: 25MAY2023 153355     2.0N  127.0E 4.0-5.4 AAAAA  Halmahera                  

 

O: 25MAY2023 04:32:06   1.5S  119.4E ML=4.6  EMSC   SULAWESI, INDONESIA          

P: 21MAY2023 153380     1.0S  120.0E 4.0-5.5 BAAAA  Sulawesi area              

 

O: 24MAY2023 21:17:19   3.2N  126.6E ML=4.0  EMSC   KEPULAUAN TALAUD, INDONESIA

O: 24MAY2023 16:34:22   3.2N  126.9E ML=4.0  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 25MAY2023 153355     2.0N  127.0E 4.0-5.4 ABAAA  Halmahera                  

 

O: 25MAY2023 04:17:17   3.7S  131.1E mb=4.4  EMSC   CERAM SEA, INDONESIA

O: 24MAY2023 21:35:56   4.6S  131.3E mb=4.4  EMSC   BANDA SEA                    

P: 27MAY2023 153382     6.0S  131.0E 4.0-5.4 BBAAA  West Irian, PNG            

 

O: 24MAY2023 15:49:35   7.0S  129.5E Mw=6.2  EMSC   BANDA SEA                    

P: 24MAY2023 153382     7.0S  130.0E 4.0-5.6 AAAAA  West Irian, PNG            

 

O: 24MAY2023 19:57:25   9.4S  114.9E mb=4.7  EMSC   SOUTH OF BALI, INDONESIA     

P: 24MAY2023 153374     9.0S  113.0E 4.0-5.6 AABAA  So. of Bali                

 

O: 24MAY2023 23:55:40  17.6N  122.3E mb=4.5  EMSC   LUZON, PHILIPPINES           

P: 29MAY2023 153397    16.0N  120.0E 3.5-4.9 BBBAA  Luzon, Philippines         

 

O: 24MAY2023 21:33:39  11.6S  118.0E ML=4.1  EMSC   SOUTH OF SUMBAWA, INDONESIA  

P: 24MAY2023 153381     9.0S  118.0E 4.0-5.4 ACAAA  Sumbawa Island area        

P: 29MAY2023 153579    11.0S  116.0E 4.0-5.6 BABAA  So. of Indonesia           

 

O: 24MAY2023 13:15:06   4.7S  153.2E Mw=5.0  EMSC   NEW IRELAND REGION, P.N.G.   

P: 22MAY2023 153368     4.0S  153.0E 4.0-5.6 AAAAA  New Britain                

 

O: 24MAY2023 08:55:56   6.1N  126.4E mb=4.6  EMSC   MINDANAO, PHILIPPINES        

P: 25MAY2023 153357     6.0N  125.0E 4.0-5.5 AABAA  Mindanao, Philippines      

 

CENTRAL AND SOUTH AMERICA

 

O: 25MAY2023 03:05:34   8.9N   77.1W Mw=6.6  EMSC   PANAMA-COLOMBIA BORDER REGION

O: 25MAY2023 03:14:59   8.9N   77.1W mb=4.9  EMSC   PANAMA-COLOMBIA BORDER REGION

O: 25MAY2023 06:48:30   8.9N   77.1W mb=4.6  EMSC   PANAMA-COLOMBIA BORDER REGION

O: 25MAY2023 03:16:26   8.6N   77.2W ML=4.1  EMSC   PANAMA-COLOMBIA BORDER REGION

P: 27MAY2023 153352     7.0N   78.0W 4.0-5.9 ABAAA  Colombia                   

 

O: 24MAY2023 17:50:16   6.8S   75.9W ML=4.4  EMSC   NORTHERN PERU                

P: 15MAY2023 153102     6.0S   76.0W 4.0-5.7 CAAAA  No. Peru                   

 

O: 24MAY2023 11:44:07   8.0N   82.6W ML=4.2  EMSC   SOUTH OF PANAMA

O: 24MAY2023 18:43:30   7.0N   82.7W ML=4.2  EMSC   SOUTH OF PANAMA               

P: 22MAY2023 153353     7.0N   82.0W 3.5-5.5 AAAAA  Costa Rica                 

 

O: 25MAY2023 03:16:26   8.6N   77.2W ML=4.1  EMSC   PANAMA-COLOMBIA BORDER REGION

P: 27MAY2023 153352     7.0N   78.0W 4.0-5.9 ABAAA  Colombia                   

 

O: 25MAY2023 00:35:12  11.0N   62.5W mb=4.6  EMSC   OFFSHORE SUCRE, VENEZUELA    

 

NEIC reported this earthquake of M 4.6 in Trinidad and Tobago was felt with intensity II-III in the area(s) of Trinidad and Tobago in Mucurapo and Tunapuna and in Venezuela with IV in Ciudad Bolivar and II in Ciudad Guayana.

 

O: 24MAY2023 18:38:38  13.5S   74.6W mb=4.8  EMSC   CENTRAL PERU                 

P: 21MAY2023 153571    13.0S   77.0W 4.0-5.6 BABAA  Central Peru               

 

O: 24MAY2023 09:02:12  15.3N   93.3W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 26MAY2023 153386    16.0N   93.0W 3.5-5.5 AAAAA  Chiapas, Mexico            

 

O: 24MAY2023 13:01:54  16.0N   98.5W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 26MAY2023 153406    17.0N  100.0W 3.5-5.5 AABAA  Oaxaca, Mexico             

 

O: 24MAY2023 09:23:25  18.0N   66.7W Md=3.2  EMSC   PUERTO RICO REGION           

P: 22MAY2023 153407    18.0N   67.0W 3.4-5.3 AAAAA  Puerto Rico                

 

O: 24MAY2023 08:00:42  18.0N  102.1W ML=4.0  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 23MAY2023 153400    19.0N  102.0W 3.5-5.3 AAAAA  Michoacan, Mexico          

P: 24MAY2023 153399    17.0N  102.0W 3.5-5.8 AAAAA  Michoacan, Mexico          

 

O: 24MAY2023 16:26:33  19.2N   95.9W ML=4.0  EMSC   OFFSHORE VERACRUZ, MEXICO    

P: 26MAY2023 153406    18.0N   97.0W 3.5-5.4 ABAAA  Oaxaca, Mexico             

 

O: 24MAY2023 11:28:16  19.2N  103.7W ML=4.1  EMSC   COLIMA, MEXICO               

P: 24MAY2023 153399    19.0N  104.0W 3.5-5.2 AAAAA  Michoacan, Mexico           

 

O: 24MAY2023 12:31:14  19.5N   65.8W Md=3.4  EMSC   PUERTO RICO REGION

O: 24MAY2023 13:42:52  19.6N   65.7W Md=3.8  EMSC   PUERTO RICO REGION

O: 24MAY2023 23:38:40  19.7N   65.8W Md=3.4  EMSC   PUERTO RICO REGION

O: 25MAY2023 05:45:57  19.8N   65.8W Md=3.8  EMSC   PUERTO RICO REGION

O: 24MAY2023 08:47:38  19.5N   65.8W Md=3.8  EMSC   PUERTO RICO REGION           

P: 23MAY2023 153395    19.0N   65.0W 3.0-5.5 AAAAA  Leeward Islands            

 

O: 24MAY2023 10:21:11  19.5N  102.4W ML=4.0  EMSC   MICHOACAN, MEXICO            

P: 23MAY2023 153400    19.0N  102.0W 3.5-5.3 AAAAA  Michoacan, Mexico          

 

O: 25MAY2023 02:22:00  19.7S   69.3W mb=4.1  EMSC   TARAPACA, CHILE              

P: 26MAY2023 153594    20.0S   70.0W 4.0-5.7 AAAAA  So. Peru/Bolivia           

 

O: 24MAY2023 08:29:11  23.1N  100.2W ML=4.0  EMSC   SAN LUIS POTOSI, MEXICO      

 

O: 25MAY2023 02:02:38  24.1S   66.5W mb=4.2  EMSC   SALTA, ARGENTINA             

O: 25MAY2023 00:03:08  24.3S   67.3W mb=4.3  EMSC   SALTA, ARGENTINA              

P: 23MAY2023 153585    24.0S   67.0W 4.0-5.7 AAAAA  Argentina                  

 

O: 24MAY2023 15:17:48  31.9S   66.6W mb=4.6  EMSC   LA RIOJA, ARGENTINA          

P: 30MAY2023 153601    32.0S   70.0W 4.0-5.8 CACAA  Central Chile              

 

O: 24MAY2023 18:28:56  38.4S   75.4W mb=4.6  EMSC   OFF COAST OF ARAUCANIA, CHILE

P: 21MAY2023 153603    38.0S   74.0W 4.0-5.4 BAAAA  Central Chile              

 

AFRICA AND EUROPE

 

O: 24MAY2023 14:52:46  24.4S   20.7E ML=4.1  EMSC   BOTSWANA                      

P: 23MAY2023 153591    27.0S   27.0E 3.0-4.5 ACCAA  Rep. South Africa          

 

O: 24MAY2023 15:05:48  66.6N   18.0W ML=3.0  EMSC   ICELAND REGION               

P: 26MAY2023 153562    66.0N   17.0W 3.0-4.4 AAAAA  Iceland area                

 

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

 

SOUTHWEST PACIFIC

 

 

O: 24MAY2023 08:30:23  18.1S  168.1E mb=4.4  EMSC   VANUATU                      

P: 24MAY2023 153584    19.0S  168.0E 4.0-5.4 AAAAA  Vanuatu Islands             

 

NEIC reported this earthquake of M 4.4 in Vanuatu was felt with intensity II-III in the area(s) of Vanuatu in Vila Shefa.

 

O: 25MAY2023 02:56:50  18.2S  179.2W mb=5.0  EMSC   FIJI REGION                  

P: 23MAY2023 153580    18.0S  178.0W 4.0-5.4 AAAAA  Tonga Islands              

 

O: 24MAY2023 22:23:22  23.4S  171.1E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 21MAY2023 153589    23.0S  171.0E 4.0-5.5 BAAAA  Loyalty Islands            

 

OCEAN RIDGES

 

O: 24MAY2023 10:33:23  57.0S  140.8W Mw=5.5  EMSC   PACIFIC-ANTARCTIC RIDGE      

 

O: 24MAY2023 15:05:48  66.6N   18.0W ML=3.0  EMSC   ICELAND REGION               

P: 26MAY2023 153562    66.0N   17.0W 3.0-4.4 AAAAA  Iceland area               

 

 

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: 24MAY2023 13:33:34  30.7N  129.6E mb=4.5  EMSC   KYUSHU, JAPAN                

P: 23MAY2023 153454    31.0N  131.0E 3.5-5.1 AAAAA  Kyushu, Japan area         

 

O: 25MAY2023 00:15:31  42.1N  142.6E mb=4.5  EMSC   HOKKAIDO, JAPAN REGION       

P: 30MAY2023 153499    42.0N  142.0E 3.5-5.6 BAAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 24MAY2023 10:18:10  30.3N  116.2W ML=3.6  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

P: 24MAY2023 153468    30.8N  116.3W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 24MAY2023 22:07:35  31.1N  115.4W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 29MAY2023 153471    31.0N  116.3W 2.5-4.8 BAAAA  So. California             

 

O: 24MAY2023 18:37:07  31.3N  114.5W ML=3.8  EMSC   GULF OF CALIFORNIA           

P: 27MAY2023 153468    30.2N  114.1W 2.0-4.1 BBAAA  SW U.S.A                   

 

O: 24MAY2023 15:33:55  33.3N  116.0W Ml=2.6  EMSC   SOUTHERN CALIFORNIA

O: 25MAY2023 05:54:33  32.4N  115.2W Ml=2.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 22MAY2023 153473    32.9N  115.6W 2.5-4.6 BAAAA  So. California             

 

O: 24MAY2023 19:11:52  34.0N  116.7W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

P: 22MAY2023 153473    33.4N  116.7W 2.5-4.8 AAAAA  So. California             

P: 25MAY2023 153477    34.6N  116.7W 2.5-4.9 AAAAA  So. California             

 

O: 24MAY2023 14:54:55  35.1N  119.0W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P: 25MAY2023 153478    35.3N  118.5W 2.5-4.8 AAAAA  So. California             

P: 30MAY2023 153476    35.0N  119.2W 2.5-4.9 CAAAA  So. California             

 

O: 25MAY2023 01:07:03  35.4N  117.7W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 27MAY2023 153477    35.0N  117.7W 2.5-4.8 AAAAA  So. California             

 

O: 24MAY2023 21:50:51  37.3N  117.6W ml=2.1  EMSC   CENTRAL CALIFORNIA           

P: 21MAY2023 153433    37.2N  117.3W 2.5-4.8 BAAAA  California/Nevada area     

 

O: 24MAY2023 08:42:02  38.8N  122.7W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 26MAY2023 153443    38.8N  122.7W 2.5-4.5 AAAAA  Central California         

 

O: 24MAY2023 08:45:29  39.9N  123.0W Md=2.1  EMSC   NORTHERN CALIFORNIA          

O: 24MAY2023 11:01:59  39.9N  123.0W MD=2.3  EMSC   NORTHERN CALIFORNIA

P: 26MAY2023 153444    39.3N  123.2W 2.5-4.5 AAAAA  Central California         

 

 

ALASKA

 

O: 24MAY2023 12:42:12  52.2N  173.8W mb=3.9  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 25MAY2023 153534    51.1N  174.6W 3.5-5.1 ABAAA  Andreanoff Isls, Aleutians 

 

O: 24MAY2023 21:02:42  55.3N  157.4W ML=3.0  EMSC   ALASKA PENINSULA             

P: 25MAY2023 153533    55.8N  157.7W 3.5-5.4 AAAAA  Alaska Peninsula            

 

O: 25MAY2023 06:03:58  56.4N  149.1W ML=3.4  EMSC   GULF OF ALASKA               

P: 26MAY2023 153561    55.3N  149.0W 3.2-4.9 ABAAA  Central Alaska             

 

O: 24MAY2023 21:25:54  62.0N  148.3W ML=3.5  EMSC   CENTRAL ALASKA                

P: 27MAY2023 153559    62.8N  149.1W 3.2-5.1 BAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 24MAY2023 17:52:15  45.1N  124.1W Ml=2.0  EMSC   OFFSHORE OREGON              

P: 21MAY2023 153521    45.3N  121.7W 2.0-4.2 BABAA  Oregon state, U.S.         

 

O: 25MAY2023 05:51:33  54.4N  118.6W ML=3.0  EMSC   ALBERTA, CANADA              

P: 18MAY2023 153260    56.0N  120.0W 2.0-4.2 CBAAA  Alberta                    

 

ROCKY MOUNTAINS REGION

 

O: 24MAY2023 09:04:52  31.6N  104.5W ML=2.3  EMSC   WESTERN TEXAS                

P: 26MAY2023 153470    31.4N  104.2W 2.0-4.1 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 24MAY2023 17:33:56  34.8N   97.5W ML=2.0  EMSC   OKLAHOMA                     

P: 24MAY2023 153485    35.0N   97.0W 2.0-4.0 AAAAA  Southern Plains            

 

O: 24MAY2023 19:38:49  39.4N   99.0W mb=3.2  EMSC   KANSAS                       

P: 17MAY2023 153209    39.0N   99.0W 2.0-4.1 CAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.2 in Kansas was felt with intensity II-III in the area(s) of Kansas in Alton.

 

O: 24MAY2023 21:48:17  44.1N   66.2W MB=2.3  ECAN of Yarmouth, NS, felt          

P: 27MAY2023 153498    46.0N   66.0W 2.0-4.1 BBAAA  E. of Maine                

 

HAWAII

 

O: 25MAY2023 05:43:57  19.3N  155.4W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII

O: 24MAY2023 23:59:32  19.2N  155.5W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII     

P: 24MAY2023 153393    19.2N  155.1W 3.0-4.9 AAAAA  Hawaii                     

 

MODERATE QUAKES IN MINDANAO, PHILIPPINES

 

EARTHQUAKE SUMMARY FOR MAY 23, 2023

 

It was a relatively quiet day in global seismicity. The strongest earthquake

in the world was an M 5.2 in southern Mindanao, Philippines. This event was accompanied by a series of lesser quakes of M 4.8, 4.2, 4.9 and 4.5. NEIC reported this earthquake of M 5.2 in Mindanao, Philippines was felt with intensity II-III in the area(s) of Mindanao, Philippines in Kiamba, Koronadal, Buayan, Tacurong.  Foreshocks  of M 4.8 and M 4.5 were felt with intensity II in Katangawan and Buayan, Mindanao. Forecast 153356 had expected this activity within about 100 km was likely around May 22.

 

O: 23MAY2023 18:23:04   5.7N  124.5E mb=4.8  EMSC   MINDANAO, PHILIPPINES

O: 23MAY2023 18:30:16   5.7N  124.3E ML=4.2  EMSC   MINDANAO, PHILIPPINES

O: 24MAY2023 00:44:06   5.7N  124.4E Mw=5.2  EMSC   MINDANAO, PHILIPPINES

O: 23MAY2023 17:04:00   5.8N  124.6E mb=4.9  EMSC   MINDANAO, PHILIPPINES

O: 23MAY2023 17:11:54   5.8N  124.6E mb=4.5  EMSC   MINDANAO, PHILIPPINES        

P: 22MAY2023 153356     5.0N  124.0E 4.0-5.8 AAAAA  Mindanao, Philippines      

 

The most unusual earthquake in the U.S. or Canada today was an M 2.6 in North Carolina. NEIC reported this earthquake of M 2.6 in  North Carolina was felt with intensity II-III in the area(s) of  North Carolina in Lake Junaluska, Clude, Waynesville, Canton, Leicester, Candler, Maggie Valley and Asheville among others. This is the largest earthquake in North Carolina within about 100 km of this epicenter since an M 2.7 on December 8, 2022. The last event of significantly larger magnitude in this area was an M 3.4 on March 5, 2019. Forecast 153453 had expected today's event within North Carolina within about 50 km of this epicenter was likely around May 23.

 

O: 23MAY2023 23:28:55  35.6N   82.9W mb=2.6  EMSC   NORTH CAROLINA               

P: 23MAY2023 153453    35.0N   83.0W 2.0-4.1 AAAAA  Kentucky/Tennessee/NC      

 

Two light earthquakes also occurred today in southern Texas of M 2.2 and 2.5. These occurred near local solar noon and may have been promoted by tidal stresses which maximize near this hour. Forecast 153422 had expected this activity within about 50 was likely around May 24. This activity is located at 102 degrees from the Loyalty Islands and may have been promoted by energy from that source. Other activity at this distance from the Loyalty Islands has been occurring in Tajikistan, Nepal, Prince Edward Islands, Colorado, Yukon Territory, Canada,  and northern South and Central America and these areas could see  continued seismic enhancement in the next several days.

 

O: 23MAY2023 19:23:26  28.6N   98.3W ML=2.2  EMSC   SOUTHERN TEXAS

O: 23MAY2023 19:20:00  28.6N   98.3W mb=2.5  EMSC   SOUTHERN TEXAS               

P: 24MAY2023 153422    28.0N   98.0W 3.0-4.4 AAAAA  Northern Mexico            

 

 

 

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: 23MAY2023 22:21:50  29.8N   81.3E mb=4.3  EMSC   NEPAL                        

P: 25MAY2023 153493    30.0N   83.0E 3.8-5.4 AABAA  Xizang                     

 

O: 23MAY2023 22:58:43  36.4N   71.3E mb=4.2  EMSC   HINDU KUSH REGION, AFGHANISTAN

O: 24MAY2023 03:18:06  36.4N   71.2E mb=4.0  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 24MAY2023 153450    36.0N   71.0E 3.8-5.4 AAAAA  Hindu Kush/Pakistan        

 

O: 23MAY2023 14:42:56  41.7N   82.4E mb=4.7  EMSC   SOUTHERN XINJIANG, CHINA     

O: 23MAY2023 15:18:02  41.7N   82.3E mb=4.5  EMSC   SOUTHERN XINJIANG, CHINA

P: 25MAY2023 153503    41.0N   83.0E 4.0-5.4 AAAAA  Kirgizstan/Xinjiang        

 

O: 23MAY2023 09:00:06  24.0N  122.6E ML=4.6  EMSC   TAIWAN REGION                

P: 24MAY2023 153427    24.0N  122.0E 4.0-5.6 AAAAA  Taiwan                     

 

INDONESIA AND PHILIPPINES

 

O: 23MAY2023 08:15:55   0.4N  125.7E ML=4.5  EMSC   MOLUCCA SEA                  

P: 19MAY2023 153084     1.0N  126.0E 4.0-5.5 BAAAA  Mindanao, Philippines      

 

O: 24MAY2023 04:07:43   0.8S   98.5E mb=4.4  EMSC   KEPULAUAN BATU, INDONESIA    

P: 27MAY2023 153377     2.0S   99.0E 4.0-5.4 BBAAA  So. of Sumatera            

P: 29MAY2023 153359     0.0N   99.0E 4.0-5.5 BAAAA  So. Sumatera               

 

O: 23MAY2023 17:39:57   2.7S  139.2E ML=4.2  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 20MAY2023 153111     2.0S  138.0E 4.0-5.4 BABAA  West Irian, PNG            

 

O: 23MAY2023 15:04:55   3.1N  126.8E mb=5.1  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 19MAY2023 153083     4.0N  128.0E 4.0-5.4 BABAA  Halmahera                  

 

O: 23MAY2023 13:00:37   3.8S  151.5E mb=5.0  EMSC   NEW IRELAND REGION, P.N.G.   

P: 22MAY2023 153368     4.0S  153.0E 4.0-5.6 AABAA  New Britain                

 

O: 24MAY2023 03:13:41   6.7S  129.6E mb=4.4  EMSC   BANDA SEA                    

P: 24MAY2023 153382     7.0S  130.0E 4.0-5.6 AAAAA  West Irian, PNG            

 

O: 23MAY2023 21:12:04   7.6S  119.3E mb=4.3  EMSC   FLORES SEA                   

P: 24MAY2023 153381     9.0S  118.0E 4.0-5.4 ABBAA  Sumbawa Island area        

 

O: 23MAY2023 17:41:51   8.2S  115.3E ML=4.4  EMSC   BALI REGION, INDONESIA       

P: 25MAY2023 153579    10.0S  116.0E 4.0-5.4 ABAAA  Sumbawa Island area        

 

O: 24MAY2023 02:21:10   9.2S  112.5E ML=4.1  EMSC   SOUTH OF JAVA, INDONESIA     

P: 24MAY2023 153374     9.0S  113.0E 4.0-5.6 AAAAA  So. of Bali                

 

O: 23MAY2023 11:53:28  10.0S  111.1E ML=4.7  EMSC   SOUTH OF JAVA, INDONESIA      

P: 23MAY2023 153376     9.0S  109.0E 4.0-5.4 AABAA  So. of Java                

 

 

O: 23MAY2023 18:23:04   5.7N  124.5E mb=4.8  EMSC   MINDANAO, PHILIPPINES

O: 23MAY2023 18:30:16   5.7N  124.3E ML=4.2  EMSC   MINDANAO, PHILIPPINES

O: 24MAY2023 00:44:06   5.7N  124.4E Mw=5.2  EMSC   MINDANAO, PHILIPPINES

O: 23MAY2023 17:04:00   5.8N  124.6E mb=4.9  EMSC   MINDANAO, PHILIPPINES

O: 23MAY2023 17:11:54   5.8N  124.6E mb=4.5  EMSC   MINDANAO, PHILIPPINES        

P: 22MAY2023 153356     5.0N  124.0E 4.0-5.8 AAAAA  Mindanao, Philippines      

 

CENTRAL AND SOUTH AMERICA

 

O: 23MAY2023 09:43:59  18.8S   67.2W mb=4.5  EMSC   ORURO, BOLIVIA

 

O: 23MAY2023 19:53:30  10.3N   84.9W ML=4.6  EMSC   COSTA RICA                   

P: 21MAY2023 153402    11.0N   86.0W 3.5-5.1 AAAAA  Nicaragua                  

 

O: 23MAY2023 16:15:56  15.8N   93.8W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 23MAY2023 153386    15.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 23MAY2023 16:07:53  15.8N   97.0W ML=4.0  EMSC   OAXACA, MEXICO               

P: 23MAY2023 153405    15.0N   97.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 23MAY2023 17:08:44  17.2N   95.4W ML=4.0  EMSC   OAXACA, MEXICO               

P: 23MAY2023 153387    17.0N   94.0W 3.5-5.3 AABAA  Chiapas, Mexico            

P: 28MAY2023 153387    17.0N   95.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O: 24MAY2023 03:43:29  18.2N   67.5W Md=3.3  EMSC   MONA PASSAGE, PUERTO RICO    

P: 22MAY2023 153407    18.0N   67.0W 3.4-5.3 AAAAA  Puerto Rico                 

 

O: 23MAY2023 07:14:02  19.1N   65.7W Md=3.9  EMSC   PUERTO RICO REGION

O: 23MAY2023 07:34:12  18.9N   64.4W Md=3.4  EMSC   VIRGIN ISLANDS REGION        

O: 23MAY2023 12:49:48  19.8N   65.7W Md=3.3  EMSC   PUERTO RICO REGION           

P: 23MAY2023 153395    19.0N   65.0W 3.0-5.5 AAAAA  Leeward Islands            

 

O: 24MAY2023 03:42:57  19.8S   69.3W ML=4.2  EMSC   TARAPACA, CHILE              

P: 26MAY2023 153594    20.0S   70.0W 4.0-5.7 AAAAA  So. Peru/Bolivia           

 

O: 23MAY2023 21:01:57  29.6S   71.7W mb=4.3  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 19MAY2023 153334    30.0S   72.0W 4.0-5.5 BAAAA  Coast Central Chile        

 

O: 24MAY2023 03:14:28  31.7S   70.1W mb=4.2  EMSC   SAN JUAN, ARGENTINA          

P: 21MAY2023 153601    32.0S   71.0W 4.0-5.8 BAAAA  Central Chile              

 

O: 23MAY2023 22:57:31  36.8S   73.7W mb=4.5  EMSC   OFFSHORE BIO-BIO, CHILE

O: 23MAY2023 23:18:19  36.8S   73.7W mb=4.2  EMSC   OFFSHORE BIO-BIO, CHILE

O: 23MAY2023 12:29:32  36.8S   73.6W mb=4.6  EMSC   OFFSHORE BIO-BIO, CHILE      

P: 21MAY2023 153603    38.0S   74.0W 4.0-5.4 ABAAA  Central Chile              

 

NEIC reported this earthquake of M 4.5 off BioBio, Chile  was felt with intensity II-III in the area(s) of  BioBio, Chile in Talcahuano and Concepcion.

 

AFRICA AND EUROPE

 

 

O: 23MAY2023 16:15:28  46.1N   21.5E mb=4.1  EMSC   ROMANIA                      

P: 27MAY2023 153525    45.0N   23.0E 3.0-5.3 BBAAA  Romania/NW Turkey          

 

O: 23MAY2023 19:22:41  66.6N   17.8W ML=4.1  EMSC   ICELAND REGION               

P: 26MAY2023 153562    66.0N   17.0W 3.0-4.4 BAAAA  Iceland area               

 

SOUTHWEST PACIFIC

 

O: 23MAY2023 09:26:43  22.8S  170.8E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 23MAY2023 13:06:44  22.9S  170.2E mb=4.8  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 23MAY2023 10:20:36  23.1S  170.4E mb=4.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 23MAY2023 11:49:56  22.6S  171.1E mb=4.8  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 21MAY2023 153589    23.0S  171.0E 4.0-5.5 AAAAA  Loyalty Islands            

 

O: 23MAY2023 10:51:39  20.1S  176.2W mb=4.5  EMSC   FIJI REGION                  

P: 25MAY2023 153595    20.0S  176.0W 4.0-5.4 AAAAA  Tonga Islands              

 

O: 23MAY2023 23:48:15  24.4S  179.5W mb=4.8  EMSC   SOUTH OF FIJI ISLANDS        

P: 25MAY2023 153598    25.0S  179.0W 4.0-5.6 AAAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 24MAY2023 01:48:27  41.0S   42.8E mb=4.7  EMSC   SOUTHWEST INDIAN RIDGE       

P: 22MAY2023 153611    41.0S   43.0E 4.0-5.8 AAAAA  So. Indian Ocean           

 

O: 23MAY2023 16:18:41  60.7S   26.0W mb=4.6  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 25MAY2023 153619    61.0S   26.0W 4.0-5.7 AAAAA  Southern  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: 23MAY2023 08:21:30  34.0N  134.8E ML=4.0  EMSC   NEAR S. COAST OF WESTERN HONSH

P: 23MAY2023 153460    35.0N  136.0E 3.5-5.1 AAAAA  No. Honshu, Japan          

 

O: 23MAY2023 16:31:30  34.5N  139.2E ML=4.1  EMSC   NEAR S. COAST OF HONSHU, JAPAN

P: 18MAY2023 153168    34.0N  139.0E 3.5-4.9 BAAAA  Central/So. Honshu Japan   

 

O: 24MAY2023 03:10:16  48.0N  149.4E mb=4.0  EMSC   NORTHWEST OF KURIL ISLANDS   

P: 22MAY2023 153527    48.0N  147.0E 3.5-5.5 AABAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 23MAY2023 19:45:42  30.3N  114.8W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO      

P: 27MAY2023 153468    30.2N  114.1W 2.0-4.1 BAAAA  SW U.S.A                   

 

O: 23MAY2023 09:34:13  30.8N  115.4W ML=3.1  EMSC   BAJA CALIFORNIA, MEXICO      

O: 23MAY2023 08:59:14  30.9N  116.1W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO

O: 23MAY2023 17:13:57  30.9N  116.1W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO

P: 24MAY2023 153468    30.8N  116.3W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 24MAY2023 02:18:46  34.0N  116.8W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 22MAY2023 153473    33.4N  116.7W 2.5-4.8 AAAAA  So. California             

P: 25MAY2023 153477    34.6N  116.7W 2.5-4.9 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.6 in Southern California was felt with intensity II-III in the area(s) of Southern California in Thermal.

 

O: 23MAY2023 09:52:39  35.8N  117.6W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P: 20MAY2023 153202    35.7N  118.1W 2.5-4.8 BAAAA  So. California             

 

O: 23MAY2023 07:47:24  37.3N  117.6W ml=2.0  EMSC   CENTRAL CALIFORNIA            

O: 23MAY2023 12:23:27  37.3N  117.6W ml=2.8  EMSC   NEVADA

O: 23MAY2023 17:33:34  37.3N  117.6W ML=2.7  EMSC   CENTRAL CALIFORNIA

O: 23MAY2023 17:35:52  37.3N  117.6W ML=2.4  EMSC   CENTRAL CALIFORNIA

O: 24MAY2023 00:30:24  37.3N  117.6W ML=2.9  EMSC   CENTRAL CALIFORNIA

P: 21MAY2023 153433    37.2N  117.3W 2.5-4.8 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 3.0 in Nevada-Central California border was felt with intensity II-III in the area(s) of Central California border in Clovis.

 

O: 23MAY2023 20:28:15  38.8N  122.9W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P: 24MAY2023 153443    38.5N  122.7W 2.5-4.5 AAAAA  Central California         

 

O: 24MAY2023 02:15:42  40.2N  121.2W ML=2.7  EMSC   NORTHERN CALIFORNIA           

P: 22MAY2023 153516    40.3N  121.2W 2.5-4.6 AAAAA  Northern California        

 

NEIC reported this earthquake of M 2.9 in Northern California was felt with intensity II-III in the area(s) of Northern California in Westwood, Chester, Milford.

 

O: 23MAY2023 14:47:36  40.5N  124.2W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 22MAY2023 153518    40.9N  124.3W 2.5-4.4 AAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O: 23MAY2023 23:06:58  51.6N  176.0W ML=3.2  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 25MAY2023 153534    51.1N  174.6W 3.5-5.1 AAAAA  Andreanoff Isls, Aleutians 

 

O: 23MAY2023 17:10:27  51.8N  171.2W mb=3.7  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 22MAY2023 153536    52.4N  170.7W 3.5-4.9 AAAAA  Andreanoff Isls, Aleutians 

 

O: 23MAY2023 21:23:22  51.8N  178.6E mb=3.7  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 22MAY2023 153548    51.0N  179.0E 4.0-5.6 AAAAA  Rat Islands                

 

O: 24MAY2023 05:22:26  56.9N  158.1W ML=3.2  EMSC   ALASKA PENINSULA             

P: 25MAY2023 153533    55.8N  157.7W 3.5-5.4 ABAAA  Alaska Peninsula           

 

O: 23MAY2023 16:28:28  60.1N  153.1W ML=3.1  EMSC   SOUTHERN ALASKA              

P: 25MAY2023 153555    60.3N  153.0W 3.2-5.1 AAAAA  Central Alaska             

 

O: 23MAY2023 18:32:40  60.4N  151.0W ML=3.2  EMSC   KENAI PENINSULA, ALASKA      

P: 23MAY2023 153557    61.2N  151.2W 3.2-5.1 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 23MAY2023 07:21:34  48.3N  122.6W ML=3.1  EMSC   PUGET SOUND REGION, WASHINGTON

P: 22MAY2023 153531    48.9N  123.1W 2.0-4.1 AAAAA  Washington state, U.S.     

 

NEIC reported this earthquake of M 3.1 in Washington State was felt with intensity II-III in the area(s) of Washington State in Oak Harbor, Camano Island, La Conner, Langley, Lopez Island, Arlington and Lynnwood.

 

O: 23MAY2023 16:00:56  66.8N  136.0W ML=3.6  EMSC   NORTHERN YUKON TERRITORY, CANA

O: 22MAY2023 22:38:10  66.9N  135.9W MB=3.6  ECAN of Fort McPherson, NT  

P: 19MAY2023 153298    65.0N  134.0W 2.5-4.1 BBAAA  Yukon Territory, Canada    

 

ROCKY MOUNTAINS REGION

 

O: 24MAY2023 01:12:14  31.6N  104.0W ML=2.6  EMSC   WESTERN TEXAS

O: 23MAY2023 10:22:22  31.7N  104.6W ML=2.5  EMSC   WESTERN TEXAS

O: 24MAY2023 03:04:39  31.7N  104.4W ML=2.1  EMSC   WESTERN TEXAS

O: 24MAY2023 03:08:13  31.7N  104.4W ML=3.0  EMSC   WESTERN TEXAS

O: 23MAY2023 12:20:45  31.8N  104.2W ML=2.1  EMSC   WESTERN TEXAS                

P: 23MAY2023 153470    31.4N  103.8W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 23MAY2023 11:14:20  44.3N  115.2W Ml=2.2  EMSC   SOUTHERN IDAHO               

O: 23MAY2023 13:56:16  44.3N  114.8W Ml=2.4  EMSC   SOUTHERN IDAHO

P: 24MAY2023 153507    44.0N  115.0W 2.0-4.3 AAAAA  Montana/Idaho              

 

O: 23MAY2023 09:11:05  37.0N  104.9W ML=2.7  EMSC   COLORADO                     

P: 27MAY2023 153447    37.0N  105.2W 2.0-4.4 BAAAA  Colorado area              

 

EASTERN U.S./CANADA

 

O: 23MAY2023 19:23:26  28.6N   98.3W ML=2.2  EMSC   SOUTHERN TEXAS

O: 23MAY2023 19:20:00  28.6N   98.3W mb=2.5  EMSC   SOUTHERN TEXAS               

P: 24MAY2023 153422    28.0N   98.0W 3.0-4.4 AAAAA  Northern Mexico            

 

O: 23MAY2023 23:28:55  35.6N   82.9W mb=2.6  EMSC   NORTH CAROLINA               

P: 23MAY2023 153453    35.0N   83.0W 2.0-4.1 AAAAA  Kentucky/Tennessee/NC      

 

O: 23MAY2023 16:26:15  45.1N   80.3W MB=1.2  ECAN of Moose Point, ON             

P: 19MAY2023 153246    46.0N   81.0W 2.0-4.5 BAAAA  Ohio/Lake Erie             

 

O: 23MAY2023 12:45:07  47.3N   81.9W MB=2.1  ECAN of Gogama, ON                   

P: 20MAY2023 153246    49.0N   81.0W 2.0-4.1 BBAAA  Ohio/Lake Erie             

 

O: 23MAY2023 12:03:03  47.5N   70.2W MB=0.8  ECAN of La Pocati├¿re, QC  

O: 21MAY2023 16:23:19  47.4N   70.2W MB=0.6  ECAN of La Pocati├¿re, QC  

O: 21MAY2023 16:10:06  47.5N   70.1W MB=0.9  ECAN of La Pocati├¿re, QC  

O: 21MAY2023 06:22:49  47.4N   70.4W MB=0.9  ECAN of Saint-Bernard-de-l'├Äle-aux-Coudres, QC   

O: 23MAY2023 12:03:03  47.5N   70.2W MB=0.8  ECAN of La Pocati├¿re, QC           

P: 23MAY2023 153505    47.0N   70.0W 2.0-4.4 AAAAA  Maine                      

 

O: 20MAY2023 00:57:02  45.5N   75.2W MB=1.6  ECAN of Bourget, ON   

O: 20MAY2023 11:36:55  44.7N   76.6W MB=2.8  ECAN of Westport, ON   

O: 22MAY2023 22:06:28  45.9N   77.3W MB=1.8  ECAN of Petawawa, ON                

P: 21MAY2023 153513    45.7N   75.2W 2.0-4.3 AABAA  New York State             

 

O: 22MAY2023 06:03:01  49.1N   66.5W MB=2.1  ECAN of Sainte-Anne-des-Monts, QC   

P: 29MAY2023 153498    49.0N   66.0W 2.0-4.1 CAAAA  E. of Maine                

 

O: 21MAY2023 10:54:18  49.6N   91.7W MB=1.4  ECAN of Ignace, ON                   

O: 19MAY2023 11:18:34  49.3N   91.6W MB=1.5  ECAN of Ignace, ON   

 

O: 21MAY2023 04:44:31  46.4N   66.4W MB=2.0  ECAN of Upper Miramichi, NB         

P: 27MAY2023 153498    46.0N   66.0W 2.0-4.1 CAAAA  E. of Maine                

 

O: 21MAY2023 02:37:22  47.2N   76.5W MB=2.5  ECAN of Kitcisakik, QC              

O: 20MAY2023 11:36:55  44.7N   76.6W MB=2.8  ECAN of Westport, ON                

P: 21MAY2023 153513    45.7N   75.2W 2.0-4.3 AAAAA  New York State             

 

O: 20MAY2023 00:17:36  41.5N   83.5W MB=3.0  ECAN of Toledo, OH                  

P: 18MAY2023 153245    40.0N   84.0W 2.0-4.2 ABAAA  Ohio/Lake Erie             

 

O: 19MAY2023 07:02:47  74.1N   95.6W MB=2.9  ECAN of Resolute, NU                

 

O: 19MAY2023 05:44:09  44.3N   68.1W MB=1.7  ECAN of Bar Harbor, ME              

P: 18MAY2023 153232    44.4N   68.2W 2.0-4.6 AAAAA  Maine                      

 

HAWAII

 

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

 

UNUSUAL SEISMICITY CONTINUES IN EASTERN EUROPE AT 144 DEGREES FROM LOYALTY IS.

 

EARTHQUAKE SUMMARY FOR MAY 22, 2023

 

An unusual earthquake of M 4.5 shook western Romania today. NEIC reported it was felt with maximum intensity in Arad, Romania with V in Ghioroc, Arad and IV in Sevis with II-III shaking in Oradea and Cluj-Napoca and in Gyula, Hungary. This follows a series of unusual earthquakes in eastern Europe over the past several days as described in the previous issue of this summary:

 

 

"An unusual earthquake occurred today in the region of Belarus with M 4.2.

This event is located near the 144 degree distance from the Loyalty Islands major earthquakes of the past three days and may have been promoted by energy from those sources as noted in the previous issue of this summary:

 

"Other areas where FFA from the Loyalty Islands is still occurring include eastern Europe. Earthquakes of M 3.9 in Romania and M 4.5 in Crete, Greece occurred today around 144 degrees from the Loyalty Islands, a distance where seismic enhancement is expected with major global earthquakes as previously described in this summary:

 

 

"144 degrees: Loyalty Islands to Reykjanes Ridge, Dodecanese Is. Greece, Romania," (May 20, 2023)

 

This is the largest earthquake in Belarus within about 300 km of this epicenter in at least 35 years. NEIC has recorded no earthquakes of any size in this region since 1990, so this is a significant event and should be examined in detail." (May 22, 2023)

 

The M 4.5 in western Romania was followed by an M 4.2 two hours later and by an

M 3.9 to the northwest in Poland about eight hours later. The M 4.5 in Romania is the strongest within about 150 km of that epicenter since an M 4.8 on March 24, 1996. An M 5.5 occurred about 100 km southwest of today's epicenter on December 2, 1991 - an aftershock of an M 5.6 on July 12, 1991. When an M 5.5 occurred about 200 km to the southeast of today's epicenter on February 14, 2023  this summary noted:

 

"No earthquakes of greater magnitude have occurred in southern Romania in at least 35 years. The last earthquakes of M 5.5-5.6 within about 200 km of today's epicenter hit west of this in Serbia on July 12 and 18, 1991. This activity is at 145-150 degrees from the strong earthquakes in the Tonga and Fiji areas in November and December, 2022" (February 14, 2023)

 

An aftershock in Romania occurred on March 20, 2023 with M 4.9 concurrent with an M 5.6  in Costa Rica and Panama of the same date. These areas are at the fourth node (90 degrees) from each other and nodal triggering may have occurred in these regions.

 

Forecast 153525 had expected today's activity was likely about 250 km to the southeast of this epicenter around May 27. The earthquakes in Romania are at 144-146 degrees from the M 7.6 in Tonga of May 10 and the Loyalty Islands of May 19 and were probably promoted by energy from those sources.

 

O: 22MAY2023 19:55:25  46.1N   21.5E ML=4.2  EMSC   ROMANIA

O: 22MAY2023 17:46:41  46.1N   21.5E ML=4.5  EMSC   ROMANIA                      

P: 27MAY2023 153525    45.0N   23.0E 3.0-5.3 BBAAA  Romania/NW Turkey          

 

O: 22MAY2023 22:31:34  45.3N   25.4E ML=3.2  EMSC   ROMANIA                      

P: 23MAY2023 153526    46.0N   26.0E 3.0-4.9 AAAAA  Romania/NW Turkey          

 

The last earthquake of M>=3.9 in Poland was an M 3.9 on January 3, 2023 and an M 4.2 on September 14, 2022. This is a mining area and some of this activity may be due to rock fracture associated with mining. Forecast 153546 had expected today's activity in Poland was likely around May 22. This activity, like that in Romania is at 143-145 degrees from the Loyalty Islands. Aftershocks in Central Turkey also continued today following the mainshock there of M 7.8 on February 6, 2023. These events area also located at 144 degrees from the M 7.6 in Tonga. Forecast 153488 had expected enhanced seismicity in Turkey was likely around May 25.

 

O: 23MAY2023 03:21:00  51.6N   16.1E ML=3.9  EMSC   POLAND                       

P: 22MAY2023 153546    51.0N   16.0E 3.0-4.8 AAAAA  Poland                     

 

O: 22MAY2023 16:42:59  37.9N   36.3E Mw=4.3  EMSC   CENTRAL TURKEY

O: 23MAY2023 01:12:46  37.9N   36.3E mb=4.0  EMSC   CENTRAL TURKEY

O: 22MAY2023 16:06:58  37.9N   36.3E mb=4.6  EMSC   CENTRAL TURKEY               

P: 25MAY2023 153488    38.0N   36.0E 3.5-5.3 BAAAA  Turkey                     

 

The strongest earthquake in the world today was an M 6.1 aftershock in the

Loyalty Islands. It was not reported felt. Forecast 153589 had expected continuing activity in the Loyalty Islands was likely around May 21.

 

O: 22MAY2023 21:45:56  22.9S  170.4E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 23MAY2023 00:52:43  23.0S  171.0E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 23MAY2023 06:42:00  23.0S  170.3E Mw=6.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 23MAY2023 06:22:13  23.2S  170.7E Mw=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 22MAY2023 22:59:56  23.3S  170.6E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 22MAY2023 06:52:47  23.8S  171.8E Mw=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 22MAY2023 22:54:13  22.6S  170.0E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 21MAY2023 153589    23.0S  171.0E 4.0-5.5 AAAAA  Loyalty Islands            

 

One of the few places where the major earthquakes in the Loyalty Island of recent days have been reported felt was the Norfolk Island region of Australia. An unusual earthquake of M 3.7 hit this area today. The only events in this region of any size in the past 3 years occurred in February, 2021 with a series of events of M 3.9, 3.8 and 4.1. These - like the current event - were concurrent with a M 7.7 in the Loyalty Islands of February 10, 2021. Regional stress redistribution is the likely cause of today's event in the Norfolk Island region. Today's event occurred within minutes of local solar noon and may have been promoted by tidal stresses which maximize at that time. It also occurred less than two minutes after an M 4.9 in the Loyalty Islands. This epicenter in the  Norfolk Islands, Australia area is at 142 degrees from the M 7.8 in Turkey of February 6 and may have been promoted by energy from that source.

 

O: 23MAY2023 00:54:03  27.6S  172.8E ML=3.7  EMSC   NORFOLK ISLAND, AUSTRALIA REGION

P: 27MAY2023 153589    23.0S  172.0E 4.0-5.5 BCAAA  Loyalty Islands            

 

Strong volcanic eruptions have been occurring in Mt. Etna, Italy and in Popocatepetl Volcano north of Mexico City. Both eruptions have included copious amount of emitted ash and lava and have briefly shut down tourism and air travel in these areas. The eruption in Popocatepetl is being carefully monitored as it is near Mexico City, a major metropolitan area. Both volcanoes have frequent smaller eruptions. A volcano is also active and spewing lava in the Congo at this time. This activity may be related to strong solar flares and geomagnetic storms of the past several days.

 

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: 22MAY2023 23:11:42  25.5N  123.9E mb=4.2  EMSC   NORTHEAST OF TAIWAN          

P: 23MAY2023 153424    25.0N  123.0E 4.0-5.5 AAAAA  Ryukyu Islands             

 

O: 22MAY2023 17:36:55  37.5N   47.6E mb=4.5  EMSC   NORTHWESTERN IRAN            

P: 22MAY2023 153461    37.0N   51.0E 3.8-5.2 AACAA  No. Iran                   

 

NEIC reported this earthquake of M 4.5 in Northwestern Iran was felt with intensity II-III in the area(s) of Northwestern Iran with intensity V in Sarab Azarbayjan and III in Sandjan.

 

O: 22MAY2023 12:54:48  41.2N   77.8E mb=4.1  EMSC   KYRGYZSTAN                   

P: 23MAY2023 153503    41.0N   77.0E 4.0-5.4 AAAAA  Kirgizstan/Xinjiang        

 

O: 22MAY2023 13:28:33  52.5N  160.7E mb=4.0  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 23MAY2023 153540    54.0N  160.0E 4.0-5.7 ABAAA  E. of Kamchatka            

 

INDONESIA AND PHILIPPINES

 

O: 22MAY2023 15:50:04   1.7N  125.9E ML=4.0  EMSC   MOLUCCA SEA                  

P: 19MAY2023 153084     1.0N  126.0E 4.0-5.5 BAAAA  Mindanao, Philippines      

 

O: 22MAY2023 21:50:01   3.0N  126.8E mb=4.5  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 25MAY2023 153355     2.0N  127.0E 4.0-5.4 BAAAA  Halmahera                  

 

O: 22MAY2023 15:48:59   3.3S  139.9E mb=4.5  EMSC   PAPUA, INDONESIA             

P: 20MAY2023 153111     2.0S  138.0E 4.0-5.4 ABBAA  West Irian, PNG            

 

O: 22MAY2023 16:59:00   6.7S  129.4E mb=4.3  EMSC   BANDA SEA                    

P: 24MAY2023 153382     7.0S  130.0E 4.0-5.6 AAAAA  West Irian, PNG            

 

O: 22MAY2023 13:36:14   7.7S  158.1E mb=5.3  EMSC   SOLOMON ISLANDS              

P: 24MAY2023 153379     8.0S  156.0E 4.0-5.6 AABAA  Solomon Islands            

 

O: 23MAY2023 00:06:41   7.9S  122.5E ML=4.2  EMSC   FLORES SEA                   

P: 25MAY2023 153366     8.0S  122.0E 4.0-5.7 AAAAA  Flores Island area         

 

O: 22MAY2023 13:48:25   9.2S  124.7E ML=4.0  EMSC   TIMOR REGION                 

P: 27MAY2023 153366     9.0S  124.0E 4.0-5.5 BAAAA  Flores Island area         

 

O: 22MAY2023 22:02:40  11.7N  125.7E mb=4.6  EMSC   SAMAR, PHILIPPINES           

P: 25MAY2023 153395    11.0N  126.0E 3.5-5.1 BAAAA  Luzon, Philippines         

 

CENTRAL AND SOUTH AMERICA

 

O: 22MAY2023 08:27:14   2.9N   84.4W mb=4.7  EMSC   OFF COAST OF CENTRAL AMERICA 

P: 25MAY2023 153360     2.0N   85.0W 4.0-5.7 BAAAA  So. of Panama              

 

O: 22MAY2023 17:14:15   4.4N   76.3W mb=4.5  EMSC   COLOMBIA                     

P: 23MAY2023 153352     5.0N   76.0W 4.0-5.8 AAAAA  Colombia                   

 

O: 22MAY2023 16:36:30   9.9N   84.4W ML=4.3  EMSC   COSTA RICA                   

P: 26MAY2023 153353     9.0N   85.0W 3.5-5.1 BAAAA  Costa Rica                 

 

O: 23MAY2023 03:09:47  14.3N   94.0W mb=4.3  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 23MAY2023 153386    15.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 23MAY2023 05:51:56  15.5N   93.9W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 22MAY2023 08:32:56  14.4N   93.1W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 23MAY2023 153386    15.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 22MAY2023 07:51:11  17.2S   64.1W mb=4.8  EMSC   SANTA CRUZ, BOLIVIA          

P: 20MAY2023 153308    17.0S   70.0W 4.0-5.6 AACAA  So. Peru/Bolivia            

 

O: 22MAY2023 19:28:38  18.2N   68.2W Md=3.4  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P: 20MAY2023 153133    18.0N   68.0W 3.4-5.4 AAAAA  Puerto Rico                

 

O: 22MAY2023 11:14:59  18.2N   72.5W ML=3.4  EMSC   HAITI REGION                  

P: 24MAY2023 153413    20.0N   74.0W 3.0-4.7 ABBAA  Bahamas/No. Caribbean      

 

O: 23MAY2023 03:22:01  18.4N  101.9W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 23MAY2023 153400    19.0N  102.0W 3.5-5.3 AAAAA  Michoacan, Mexico          

 

O: 22MAY2023 17:45:04  18.7N   64.8W Md=3.3  EMSC   VIRGIN ISLANDS REGION        

P: 23MAY2023 153395    19.0N   65.0W 3.0-5.5 AAAAA  Leeward Islands            

 

O: 22MAY2023 23:46:53  19.1N   65.7W Md=3.4  EMSC   PUERTO RICO REGION           

O: 22MAY2023 21:00:31  19.7N   65.7W Md=3.7  EMSC   PUERTO RICO REGION

O: 22MAY2023 21:00:31  19.7N   65.7W Md=4.1  ANSS   PUERTO RICO REGION

P: 23MAY2023 153395    19.0N   65.0W 3.0-5.5 AAAAA  Leeward Islands            

 

NEIC reported this earthquake of M 4.1 north of Puerto Rico  was felt with intensity II-III in the area(s) of Puerto Rico in San Juan.

 

O: 23MAY2023 00:56:35  19.3N   70.0W mb=4.4  EMSC   DOMINICAN REPUBLIC

O: 23MAY2023 05:16:51  19.2N   69.9W ML=3.2  EMSC   DOMINICAN REPUBLIC           

P: 21MAY2023 153408    19.0N   69.0W 3.4-5.4 AAAAA  Puerto Rico                

 

 

NEIC reported this earthquake of M 4.4 in the Dominican Republic was felt with intensity II-III in the area(s) of the Dominican Republic with IV in Nagua Maria Trinidad, Piedra Blanca and lesser shaking in San Francisco de Macoris, Las Terrenas, Bonao, Jarabacoa, Tamboril, Santo Domingo and El Carril among others.

 

O: 22MAY2023 08:39:47  22.5S   68.4W mb=4.4  EMSC   ANTOFAGASTA, CHILE           

P: 23MAY2023 153588    24.0S   69.0W 4.0-5.4 ABAAA  Coast No. Chile            

 

O: 22MAY2023 17:46:12  23.1N  100.2W ML=4.2  EMSC   SAN LUIS POTOSI, MEXICO      

 

AFRICA AND EUROPE

 

O: 22MAY2023 12:50:08  24.4S   28.3E ML=3.2  EMSC   SOUTH AFRICA                 

P: 19MAY2023 153321    26.0S   28.0E 3.0-4.5 BBAAA  Rep. South Africa          

 

O: 22MAY2023 10:47:10  29.6N   18.1W mb=4.0  EMSC   CANARY ISLANDS, SPAIN REGION 

 

O: 22MAY2023 16:42:59  37.9N   36.3E Mw=4.3  EMSC   CENTRAL TURKEY

O: 23MAY2023 01:12:46  37.9N   36.3E mb=4.0  EMSC   CENTRAL TURKEY

O: 22MAY2023 16:06:58  37.9N   36.3E mb=4.6  EMSC   CENTRAL TURKEY               

P: 25MAY2023 153488    38.0N   36.0E 3.5-5.3 BAAAA  Turkey                     

 

O: 22MAY2023 22:31:34  45.3N   25.4E ML=3.2  EMSC   ROMANIA                       

P: 23MAY2023 153526    46.0N   26.0E 3.0-4.9 AAAAA  Romania/NW Turkey          

 

O: 22MAY2023 19:55:25  46.1N   21.5E ML=4.2  EMSC   ROMANIA

O: 22MAY2023 17:46:41  46.1N   21.5E ML=4.5  EMSC   ROMANIA                      

P: 27MAY2023 153525    45.0N   23.0E 3.0-5.3 BBAAA  Romania/NW Turkey          

 

O: 23MAY2023 03:21:00  51.6N   16.1E ML=3.9  EMSC   POLAND                       

P: 22MAY2023 153546    51.0N   16.0E 3.0-4.8 AAAAA  Poland                     

 

SOUTHWEST PACIFIC

 

O: 23MAY2023 00:54:03  27.6S  172.8E ML=3.7  EMSC   NORFOLK ISLAND, AUSTRALIA REGION

P: 27MAY2023 153589    23.0S  172.0E 4.0-5.5 BCAAA  Loyalty Islands            

 

O: 22MAY2023 21:45:56  22.9S  170.4E mb=5.0  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 23MAY2023 00:52:43  23.0S  171.0E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 23MAY2023 06:42:00  23.0S  170.3E Mw=6.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 23MAY2023 06:22:13  23.2S  170.7E Mw=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 22MAY2023 22:59:56  23.3S  170.6E mb=4.9  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 22MAY2023 06:52:47  23.8S  171.8E Mw=5.5  EMSC   SOUTHEAST OF LOYALTY ISLANDS

O: 22MAY2023 22:54:13  22.6S  170.0E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P: 21MAY2023 153589    23.0S  171.0E 4.0-5.5 AAAAA  Loyalty Islands            

 

O: 22MAY2023 13:30:39  15.7S  173.6W mb=5.1  EMSC   TONGA                        

P: 28MAY2023 153580    17.0S  172.0W 4.0-5.7 CBBAA  Tonga Islands              

 

NEIC reported this earthquake of M 5.1 in Tonga was felt with intensity II-III in the area(s) of Tonga in Apia, Samoa.

 

O: 23MAY2023 02:38:24  24.5S  179.0W mb=4.6  EMSC   SOUTH OF FIJI ISLANDS        

P: 25MAY2023 153598    25.0S  179.0W 4.0-5.6 AAAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 22MAY2023 10:47:10  29.6N   18.1W mb=4.0  EMSC   CANARY ISLANDS, SPAIN REGION 

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 23MAY2023 00:54:03  27.6S  172.8E ML=3.7  EMSC   NORFOLK ISLAND, AUSTRALIA REGION

P: 27MAY2023 153589    23.0S  172.0E 4.0-5.5 BCAAA  Loyalty Islands            

 

O: 22MAY2023 16:57:29  31.6S  180.0E ML=4.5  EMSC   KERMADEC ISLANDS REGION      

P: 25MAY2023 153608    32.0S  179.0E 4.0-5.4 BAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 22MAY2023 07:42:40  34.5N  139.3E Mw=5.1  EMSC   NEAR S. COAST OF HONSHU, JAPAN

O: 22MAY2023 10:46:27  34.4N  139.2E mb=4.9  EMSC   NEAR S. COAST OF HONSHU, JAPAN

O: 22MAY2023 19:31:30  34.5N  139.2E ML=4.1  EMSC   NEAR S. COAST OF HONSHU, JAPAN

P: 22MAY2023 153465    35.0N  142.0E 4.0-5.5 AABAA  Off East Coast Honshu      

 

NEIC reported this earthquake of M 5.1 South of Tokyo, Japan  was felt with intensity II-III in the area(s) of Japan in Kanagawa, Shizuoka, Tokyo and Saitama Prefectures.

 

O: 22MAY2023 13:58:30  42.9N  144.5E ML=4.0  EMSC   HOKKAIDO, JAPAN REGION       

P: 24MAY2023 153500    43.0N  146.0E 3.5-5.8 AAAAA  Hokkaido, Japan            

 

O: 22MAY2023 18:06:38  53.2N  153.4E mb=4.3  EMSC   SEA OF OKHOTSK               

P: 22MAY2023 153542    52.0N  158.0E 4.0-5.9 ABCAA  Kamchatka                  

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 22MAY2023 08:52:32  30.5N  114.5W ML=3.6  EMSC   GULF OF CALIFORNIA

O: 22MAY2023 22:09:17  30.5N  114.6W ML=3.4  EMSC   GULF OF CALIFORNIA

O: 22MAY2023 22:26:03  30.5N  114.5W ML=3.4  EMSC   GULF OF CALIFORNIA

O: 22MAY2023 16:19:59  30.6N  114.6W ML=3.3  EMSC   GULF OF CALIFORNIA

O: 22MAY2023 08:00:45  30.5N  114.6W ML=3.4  EMSC   GULF OF CALIFORNIA            

P: 27MAY2023 153468    30.2N  114.1W 2.0-4.1 BAAAA  SW U.S.A                   

 

O: 22MAY2023 09:49:33  30.8N  116.2W ML=3.5  EMSC   OFFSHORE BAJA CALIFORNIA, MEXI

O: 22MAY2023 17:14:25  31.1N  115.9W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO       

O: 22MAY2023 10:08:00  31.4N  115.4W ML=3.1  EMSC   BAJA CALIFORNIA, MEXICO      

P: 24MAY2023 153468    30.8N  116.3W 2.0-4.1 AAAAA  SW U.S.A                   

 

O: 22MAY2023 22:17:06  33.5N  116.6W Ml=2.6  EMSC   SOUTHERN CALIFORNIA          

P: 22MAY2023 153473    33.4N  116.7W 2.5-4.8 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.6 in Southern California was felt with intensity II-III in the area(s) of Southern California at Ramona.

 

O: 23MAY2023 00:31:13  35.6N  117.4W ML=2.5  EMSC   SOUTHERN CALIFORNIA          

P: 25MAY2023 153478    35.1N  117.0W 2.5-4.6 AAAAA  So. California             

 

O: 22MAY2023 10:49:18  40.2N  121.1W MD=2.3  EMSC   NORTHERN CALIFORNIA

O: 23MAY2023 05:31:44  40.2N  121.2W Md=2.1  EMSC   NORTHERN CALIFORNIA

O: 22MAY2023 08:03:12  40.2N  121.1W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 22MAY2023 153516    40.3N  121.2W 2.5-4.6 AAAAA  Northern California        

 

O: 22MAY2023 21:12:22  40.4N  122.1W ML=2.3  EMSC   NORTHERN CALIFORNIA           

P: 21MAY2023 153517    40.4N  122.2W 2.5-4.8 AAAAA  Northern California        

 

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

 

O: 22MAY2023 12:51:14  40.4N  125.5W ML=2.6  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 22MAY2023 153518    40.9N  124.3W 2.5-4.4 AAAAA  Off Coast of No. Calif     

P: 29MAY2023 153518    40.5N  125.8W 2.5-4.4 CAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.1 off the coast of Northern California  was felt with intensity II-III in the area(s) of Northern California in Eureka.

 

ALASKA

 

O: 22MAY2023 07:00:47  60.7N  150.6W ML=3.3  EMSC   KENAI PENINSULA, ALASKA      

P: 23MAY2023 153557    61.2N  151.2W 3.2-5.1 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.1 in the Kenai Peninsula of Alaska was felt with intensity II-III in the area(s) of  Alaska in Soldotna, Anchorage and Cooper Landing.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 22MAY2023 22:38:10  66.9N  135.9W ML=3.6  EMSC   NORTHERN YUKON TERRITORY, CANA

P: 19MAY2023 153298    65.0N  134.0W 2.5-4.1 BBAAA  Yukon Territory, Canada    

P: 24MAY2023 153565    65.0N  133.0W 2.5-4.1 ABAAA  Yukon Territory, Canada    

 

ROCKY MOUNTAINS REGION

 

O: 22MAY2023 22:59:08  31.6N  104.0W mb=3.2  EMSC   WESTERN TEXAS

O: 22MAY2023 23:01:38  31.6N  104.0W ML=2.5  EMSC   WESTERN TEXAS

O: 22MAY2023 23:08:16  31.6N  104.5W ML=2.1  EMSC   WESTERN TEXAS

O: 22MAY2023 23:13:29  31.6N  104.5W ML=2.5  EMSC   WESTERN TEXAS

O: 22MAY2023 23:19:39  31.6N  104.0W ML=2.2  EMSC   WESTERN TEXAS

O: 23MAY2023 02:24:24  31.6N  104.2W ML=2.2  EMSC   WESTERN TEXAS

O: 22MAY2023 14:38:43  31.7N  104.6W ML=2.9  EMSC   WESTERN TEXAS

O: 22MAY2023 14:17:55  31.2N  103.7W ML=2.1  EMSC   WESTERN TEXAS                

O: 22MAY2023 22:58:36  31.6N  104.0W ML=2.9  EMSC   WESTERN TEXAS                

O: 22MAY2023 14:20:30  31.6N  104.3W ML=3.3  EMSC   WESTERN TEXAS                

P: 23MAY2023 153470    31.4N  103.8W 2.0-4.1 AAAAA  SW U.S.A                   

 

NEIC reported this earthquake of M 3.9 in Western Texas was felt with intensity II-III in the area(s) of  Carlsbad, New Mexico.

 

O: 22MAY2023 13:33:48  44.8N  110.8W Ml=2.3  EMSC   YELLOWSTONE NAT. PARK, WYOMING

P: 22MAY2023 153532    44.2N  110.3W 2.0-4.1 AAAAA  Yellowstone/Wyoming        

 

O: 22MAY2023 19:08:23  46.0N  112.5W Ml=2.0  EMSC   WESTERN MONTANA              

O: 22MAY2023 22:33:05  48.1N  114.1W Ml=2.1  EMSC   WESTERN MONTANA              

P: 28MAY2023 153507    48.0N  115.0W 2.0-4.3 CAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 22MAY2023 17:19:05  34.5N   97.7W ML=2.1  EMSC   OKLAHOMA

O: 23MAY2023 01:18:43  34.5N   97.7W ML=2.3  EMSC   OKLAHOMA                     

O: 22MAY2023 17:30:35  35.8N   97.0W ML=2.2  EMSC   OKLAHOMA                     

P: 24MAY2023 153485    35.0N   97.0W 2.0-4.0 AAAAA  Southern Plains            

 

O: 22MAY2023 08:36:25  29.1N   97.6W ML=3.2  EMSC   SOUTHERN TEXAS               

P: 24MAY2023 153422    28.0N   98.0W 3.0-4.4 ABAAA  Northern Mexico            

 

HAWAII

 

O: 23MAY2023 00:21:38  19.4N  155.3W ML=3.2  EMSC   ISLAND OF HAWAII, HAWAII     

P: 24MAY2023 153393    19.2N  155.1W 3.0-4.9 AAAAA  Hawaii                     

 

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