- Earthquake summary

MODERATE QUAKES CONTINUE IN SOUTHWEST PACIFIC; HONSHU, JAPAN

EARTHQUAKE SUMMARY FOR MAY 31, 2020

The strongest earthquake in the world today was an M 5.7 in the Fiji Islands.

This event was not reported felt in this remote area. It continue regional activation which followed the landfall of TC Amphan last week in Pakistan. The area is at about 103 degrees from that landfall and was probably promoted by energy from that event. Similar events have occurred in the area in the last several days with M 5.8-6.1 in the Kermadec Islands, Tonga, Fiji and with lesser magnitude in North Island, New Zealand - all near 103 degrees from the Amphan landfall. Forecast 124431 had expected this activity within about 100 km of this epicenter was likely around May 25.

O: 31MAY2020 23:25:39 23.9S 176.7W Mw=5.7 EMSC SOUTH OF FIJI ISLANDS

P: 25MAY2020 124431 23.0S 176.0W 4.0-5.6 CAAAA Tonga Islands

The second strongest earthquake in the world today was an M 5.3 near the east coast of Honshu, Japan. NEIC reported this earthquake of M 5.2 north of Tokyo, Japan was felt with intensity II-III in the area(s) north of Tokyo, Japan with V in Ibaraki and Iwate and IV in Tochigi, Japan and II-III in Chiba and Tokyo. This continues a series of moderate quakes in the area near Tokyo in the past four months which have included an M 5.8 on May 10; an M 5.6 on May 4 and an M 5.3 on February 6, 2020. Forecast 124336 had expected today's activity was likely around May 29.

O: 31MAY2020 21:02:10 36.2N 140.4E Mw=5.3 EMSC NEAR EAST COAST OF HONSHU, JAP

P: 29MAY2020 124336 38.0N 143.0E 4.0-5.5 ABBAA So. of Honshu

An earthquake of M 4.7 hit northern Haiti today. NEIC reported it was felt with intensity VII in Northern Haiti at Limbe and IV in Cap-Hatien and II-III in Haiti at Gonaives, Castanuelas, Vieus-Bouorg-d Aoquin. This is the strongest earthquake in Haiti since an M 5.9 mainshock and an M 5.4 aftershock on October 7, 2018. Forecast 124284 had expected today's event to the east was likely around May 27.

O: 31MAY2020 18:44:50 19.9N 72.6W ML=3.4 EMSC HAITI REGION

O: 31MAY2020 07:44:24 20.0N 72.4W mb=4.7 EMSC HAITI REGION

P: 27MAY2020 124284 20.0N 71.0W 3.0-4.5 BABAA Bahamas/No. Caribbean

Light to moderate seismicity also continued today in the regions of Puerto Rico and the Virgin Islands. NEIC reported an earthquake of M 3.9 in Southern Puerto Rico was felt with intensity II-III in the area(s) of Southern Puerto Rico at Ponce (V) and Guayanilla and Coto Laurel (IV) and Guanica, Juana Diaz, Albonito and Bayamon. Forecast 124280 had expected this activity within about 25 km was likely around May 28.

O: 31MAY2020 16:47:07 17.9N 66.8W ML=3.9 EMSC PUERTO RICO REGION

O: 01JUN2020 05:27:34 17.9N 66.8W Md=3.0 EMSC PUERTO RICO REGION

O: 01JUN2020 04:27:07 17.9N 66.8W Md=3.2 EMSC PUERTO RICO REGION

O: 1JUN2020 05:16:10 17.9N 66.8W ML=3.4 EMSC PUERTO RICO REGION

P: 28MAY2020 124280 18.0N 67.0W 3.4-5.0 BAAAA Puerto Rico

NEIC also reported earthquakes of M 3.8 and M 3.9 in the Virgin Islands were felt with intensity II-III in the area(s) of the Virgin Islands at Saint Thomas, Culebra, Saint John (IV), Road Town and Frederiksted. Forecast 124269 had expected this activity within about 25 km was likely around May 28.

O: 31MAY2020 19:56:31 18.6N 65.1W ML=3.4 EMSC VIRGIN ISLANDS REGION

O: 31MAY2020 19:56:31 18.6N 65.1W ML=3.8 ANSS VIRGIN ISLANDS REGION

O: 31MAY2020 17:46:12 19.2N 65.0W ML=3.9 ANSS VIRGIN ISLANDS REGION

O: 31MAY2020 17:46:12 19.2N 65.0W ML=3.4 EMSC VIRGIN ISLANDS REGION

P: 29MAY2020 124269 19.0N 65.0W 3.0-5.1 AAAAA Leeward Islands

An M 4.0 earthquake occurred in the Southern Idaho aftershocks zone today.

NEIC reported this earthquake of M 4.0 in Southern Idaho was felt with intensity II-III in the area(s) of Southern Idaho in Lowman, Stanley, Garden Valley, Hailey, Garden City, Boise. This is an aftershock of the M 6.5 in the area of March 31, 2020. Six events of M>=4 have hit the area since the mainshock, the last of which was an M 4.4 on May 21, 2020. Forecast 124359 had expected today's event around May 27.

O: 31MAY2020 22:51:22 44.1N 115.1W Ml=3.1 EMSC SOUTHERN IDAHO

O: 31MAY2020 16:52:05 44.1N 115.1W mb=4.0 EMSC SOUTHERN IDAHO

O: 31MAY2020 15:09:18 44.3N 115.0W ML=2.3 EMSC SOUTHERN IDAHO

O: 01JUN2020 05:21:53 44.3N 115.0W Ml=2.7 EMSC SOUTHERN IDAHO

O: 31MAY2020 16:28:33 44.3N 115.2W Ml=2.3 EMSC SOUTHERN IDAHO

O: 31MAY2020 08:22:12 44.3N 115.2W Ml=2.8 EMSC SOUTHERN IDAHO

O: 31MAY2020 23:05:35 44.5N 115.2W Ml=2.4 EMSC SOUTHERN IDAHO

O: 31MAY2020 17:32:17 44.1N 115.1W Ml=2.9 EMSC SOUTHERN IDAHO

P: 27MAY2020 124359 44.4N 115.1W 2.0-4.1 BAAAA Montana/Idaho

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: 31MAY2020 17:54:53 40.8N 76.2E mb=4.1 EMSC KYRGYZSTAN

P: 31MAY2020 124356 40.0N 78.0E 4.0-5.5 AABAA Kirgizstan/Xinjiang

O: 31MAY2020 23:59:04 27.7N 53.3E mb=5.0 EMSC SOUTHERN IRAN

P: 27MAY2020 124295 28.0N 54.0E 3.5-5.1 BAAAA So. Iran/Persian Gulf

NEIC reported this earthquake of M 5.1 in Iran was felt with intensity II-III in the area(s) of Iran at Kongan, Bushehr.

O: 31MAY2020 21:22:08 29.2N 76.3E ML=4.3 EMSC HARYANA, INDIA

P: 31MAY2020 124345 30.0N 80.0E 3.8-5.3 AACAA Xizang

INDONESIA AND PHILIPPINES

O: 1JUN2020 01:36:38 1.7S 120.1E ML=4.2 EMSC SULAWESI, INDONESIA

P: 27MAY2020 124227 1.0N 120.0E 4.0-5.4 BCAAA Celebes Sea

O: 31MAY2020 15:26:10 2.1N 92.7E ML=4.8 EMSC OFF W COAST OF NORTHERN SUMATR

P: 27MAY2020 124237 2.0N 92.0E 4.0-5.5 BAAAA Nicobar Islands

O: 1JUN2020 01:06:43 3.0S 129.9E mb=4.7 EMSC SERAM, INDONESIA

P: 25MAY2020 124243 3.0S 129.0E 4.0-5.5 CAAAA Ceram area

NEIC reported this earthquake of M 4.7 in Indonesia was felt with intensity II-III in the area(s) of Indonesia at Ambon, Maluku.

O: 1JUN2020 04:57:51 4.0N 125.7E ML=4.3 EMSC KEPULAUAN SANGIHE, INDONESIA

P: 31MAY2020 124235 4.0N 125.0E 4.0-5.7 AAAAA Mindanao, Philippines

O: 31MAY2020 18:21:58 5.3S 129.1E ML=4.3 EMSC BANDA SEA

P: 26MAY2020 124240 7.0S 129.0E 4.0-5.4 BBAAA Banda Sea

O: 1JUN2020 00:15:56 18.2N 147.2E Mw=5.1 EMSC MARIANA ISLANDS REGION

P: 26MAY2020 124276 19.0N 145.0E 4.0-5.8 BABAA No. Marianas

CENTRAL AND SOUTH AMERICA

O: 31MAY2020 07:44:30 9.6N 84.8W ML=4.3 EMSC COSTA RICA

P: 26MAY2020 124232 9.0N 85.0W 3.5-5.1 BAAAA Costa Rica

O: 1JUN2020 01:00:34 12.8N 88.7W mb=4.8 EMSC OFFSHORE EL SALVADOR

P: 28MAY2020 124265 13.0N 89.0W 3.5-5.3 BAAAA Coast of Central America

NEIC reported this earthquake of M 4.8 in El Salvador was felt with intensity II-III in the area(s) of El Salvador in Antiguo Cuscatlan, La Libertad.

O: 31MAY2020 11:47:24 13.5N 92.5W ML=4.0 EMSC OFF THE COAST OF GUATEMALA

P: 30MAY2020 124263 15.0N 93.0W 3.5-5.3 ABAAA Chiapas, Mexico

O: 1JUN2020 06:31:56 15.6N 95.9W ML=4.0 EMSC OFFSHORE OAXACA, MEXICO

O: 31MAY2020 09:11:16 16.9N 95.2W ML=4.0 EMSC OAXACA, MEXICO

P: 27MAY2020 124264 17.0N 95.0W 3.5-5.3 BAAAA Chiapas, Mexico

O: 31MAY2020 10:22:02 17.3S 71.0W ML=4.1 EMSC NEAR COAST OF SOUTHERN PERU

P: 26MAY2020 124416 17.0S 70.0W 4.0-5.8 BAAAA So. Peru/Bolivia

O: 31MAY2020 11:51:37 17.4N 100.9W ML=4.0 EMSC GUERRERO, MEXICO

O: 31MAY2020 11:53:52 17.4N 100.9W ML=4.0 EMSC GUERRERO, MEXICO

P: 27MAY2020 124279 18.0N 100.0W 3.5-5.3 BAAAA Oaxaca, Mexico

O: 31MAY2020 16:47:07 17.9N 66.8W ML=3.9 EMSC PUERTO RICO REGION

O: 01JUN2020 05:27:34 17.9N 66.8W Md=3.0 EMSC PUERTO RICO REGION

O: 01JUN2020 04:27:07 17.9N 66.8W Md=3.2 EMSC PUERTO RICO REGION

O: 1JUN2020 05:16:10 17.9N 66.8W ML=3.4 EMSC PUERTO RICO REGION

P: 28MAY2020 124280 18.0N 67.0W 3.4-5.0 BAAAA Puerto Rico

NEIC reported this earthquake of M 3.9 in Southern Puerto Rico was felt with intensity II-III in the area(s) of Southern Puerto Rico at Ponce (V) and Guayanilla and Coto Laurel (IV) and Guanica, Juana Diaz, Albonito and Bayamon.

O: 31MAY2020 19:56:31 18.6N 65.1W ML=3.4 EMSC VIRGIN ISLANDS REGION

O: 31MAY2020 19:56:31 18.6N 65.1W ML=3.8 ANSS VIRGIN ISLANDS REGION

O: 31MAY2020 17:46:12 19.2N 65.0W ML=3.9 ANSS VIRGIN ISLANDS REGION

O: 31MAY2020 17:46:12 19.2N 65.0W ML=3.4 EMSC VIRGIN ISLANDS REGION

P: 29MAY2020 124269 19.0N 65.0W 3.0-5.1 AAAAA Leeward Islands

NEIC reported these earthquakes of M 3.8 and M 3.9 in the Virgin Islands were felt with intensity II-III in the area(s) of the Virgin Islands at Saint Thomas, Culebra, Saint John (IV), Road Town and Frederiksted.

O: 31MAY2020 18:44:50 19.9N 72.6W ML=3.4 EMSC HAITI REGION

O: 31MAY2020 07:44:24 20.0N 72.4W mb=4.7 EMSC HAITI REGION

P: 27MAY2020 124284 20.0N 71.0W 3.0-4.5 BABAA Bahamas/No. Caribbean

O: 31MAY2020 13:35:29 21.4S 68.6W mb=4.4 EMSC ANTOFAGASTA, CHILE

P: 30MAY2020 124420 22.0S 68.0W 4.0-5.9 AAAAA Argentina

O: 31MAY2020 09:57:39 22.4N 107.7W ML=4.1 EMSC OFF COAST OF SINALOA, MEXICO

P: 29MAY2020 124287 24.0N 109.0W 3.5-4.9 ABAAA Gulf of California

O: 31MAY2020 07:43:55 23.7S 67.5W ML=3.7 EMSC ANTOFAGASTA, CHILE

P: 30MAY2020 124420 22.0S 68.0W 4.0-5.9 ABAAA Argentina

O: 31MAY2020 14:09:48 31.3S 68.3W ML=4.0 EMSC SAN JUAN, ARGENTINA

P: 28MAY2020 124433 31.0S 71.0W 4.0-5.8 BABAA Central Chile

AFRICA AND EUROPE

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

SOUTHWEST PACIFIC

O: 31MAY2020 11:11:44 15.6S 168.2E mb=4.9 EMSC VANUATU

O: 31MAY2020 20:50:08 17.6S 167.4E mb=4.5 EMSC VANUATU

P: 24MAY2020 124419 17.0S 168.0E 4.0-5.4 CAAAA Vanuatu Islands

O: 31MAY2020 23:25:39 23.9S 176.7W Mw=5.7 EMSC SOUTH OF FIJI ISLANDS

P: 25MAY2020 124431 23.0S 176.0W 4.0-5.6 CAAAA Tonga Islands

OCEAN RIDGES

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

ZEALANDIA AND AUSTRALIA REGION

O: 1JUN2020 02:37:05 31.8S 179.3E ML=4.5 EMSC KERMADEC ISLANDS REGION

P: 26MAY2020 124444 32.0S 179.0E 4.0-5.5 BAAAA So. Kermadec Islands

O: 31MAY2020 18:00:48 34.4S 179.0E ML=4.3 EMSC SOUTH OF KERMADEC ISLANDS

O: 1JUN2020 03:00:21 34.8S 179.2E ML=4.2 EMSC SOUTH OF KERMADEC ISLANDS

P: 31MAY2020 124440 35.0S 179.0E 3.0-4.6 AAAAA North Island, N.Z.

O: 1JUN2020 03:00:21 34.8S 179.2W ML=4.2 EMSC SOUTH OF KERMADEC ISLANDS

P: 27MAY2020 124444 33.0S 178.0W 4.0-5.4 BBAAA So. Kermadec Islands

JAPAN AND KURIL ISLANDS

O: 1JUN2020 00:33:30 31.6N 130.3E ML=4.3 EMSC KYUSHU, JAPAN

P: 26MAY2020 124314 30.0N 129.0E 3.5-5.1 BBAAA Kyushu, Japan area

O: 31MAY2020 21:02:10 36.2N 140.4E Mw=5.3 EMSC NEAR EAST COAST OF HONSHU, JAP

P: 29MAY2020 124336 38.0N 143.0E 4.0-5.5 ABBAA So. of Honshu

O: 31MAY2020 07:26:31 49.6N 155.0E mb=4.3 EMSC KURIL ISLANDS

P: 28MAY2020 124361 48.0N 155.0E 3.5-5.8 BBAAA NE Pacific

O: 1JUN2020 02:04:52 43.7N 139.9E mb=4.0 EMSC EASTERN SEA OF JAPAN

P: 30MAY2020 124352 41.0N 142.0E 3.5-5.5 ACBAA Hokkaido, Japan

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

U.S./CANADA*

WESTERN U.S./CANADA

CALIFORNIA

O: 31MAY2020 14:13:30 32.9N 115.5W Ml=2.3 EMSC SOUTHERN CALIFORNIA

O: 31MAY2020 09:43:33 32.9N 115.5W Ml=2.1 EMSC SOUTHERN CALIFORNIA

O: 31MAY2020 16:57:42 32.9N 115.5W Ml=2.2 EMSC SOUTHERN CALIFORNIA

P: 27MAY2020 124325 32.5N 115.8W 2.5-4.5 BAAAA So. California

NEIC reported this earthquake of M 2.5 in Southern California was felt with intensity II-III in the area(s) of Southern California at Imperial and El Centro.

O: 31MAY2020 11:37:40 34.2N 117.5W Ml=2.1 EMSC SOUTHERN CALIFORNIA

P: 28MAY2020 124330 35.1N 117.0W 2.5-4.4 BAAAA So. California

O: 31MAY2020 10:21:10 35.9N 117.7W ML=2.0 EMSC CENTRAL CALIFORNIA

P: 31MAY2020 124333 35.8N 117.6W 2.5-4.7 AAAAA So. California

O: 31MAY2020 10:24:59 36.1N 117.9W Ml=2.0 EMSC CENTRAL CALIFORNIA

P: 30MAY2020 124299 36.1N 118.1W 2.5-4.6 AAAAA California/Nevada area

O: 31MAY2020 12:39:59 36.2N 120.8W Md=2.0 EMSC CENTRAL CALIFORNIA

O: 1JUN2020 04:12:28 36.6N 121.1W Md=2.4 EMSC CENTRAL CALIFORNIA

O: 31MAY2020 18:45:31 36.9N 121.6W Md=2.5 EMSC CENTRAL CALIFORNIA

P: 27MAY2020 124307 36.2N 121.8W 2.5-4.4 BAAAA Central California

NEIC reported this earthquake of M 2.5 in Central California was felt with intensity II-III in the area(s) of Central California at Aromas, San Juan Bautista, Watsonville, Salinas, Monterey and Felton.

O: 31MAY2020 20:56:01 38.0N 118.7W ml=2.0 EMSC CENTRAL CALIFORNIA

O: 31MAY2020 08:18:02 38.1N 118.8W Md=2.1 EMSC CENTRAL CALIFORNIA

O: 31MAY2020 17:33:38 38.1N 118.8W Md=2.2 EMSC CENTRAL CALIFORNIA

O: 31MAY2020 21:07:35 38.1N 118.8W ml=2.0 EMSC CENTRAL CALIFORNIA

P: 27MAY2020 124303 38.2N 118.8W 2.5-4.5 BAAAA California/Nevada area

P: 30MAY2020 124301 37.4N 118.6W 2.5-4.4 AAAAA California/Nevada area

O: 01JUN2020 00:54:24 38.2N 117.8W ML=3.4 EMSC NEVADA

O: 31MAY2020 22:25:18 38.2N 117.9W ML=3.0 EMSC NEVADA

O: 31MAY2020 19:25:29 38.2N 117.8W ML=3.5 EMSC NEVADA

O: 31MAY2020 07:45:51 38.2N 117.8W ML=3.1 EMSC NEVADA

P: 29MAY2020 124302 38.0N 117.9W 2.5-4.5 AAAAA California/Nevada area

O: 31MAY2020 08:09:46 39.2N 120.1W Md=2.2 EMSC NORTHERN CALIFORNIA

P: 29MAY2020 124309 39.8N 120.6W 2.5-4.6 AAAAA Central California

O: 31MAY2020 17:33:35 39.5N 123.6W Md=2.1 EMSC NORTHERN CALIFORNIA

P: 26MAY2020 124308 39.0N 123.1W 2.5-4.6 BAAAA Central California

ALASKA

O: 1JUN2020 00:24:32 59.5N 153.0W ML=3.5 EMSC SOUTHERN ALASKA

P: 27MAY2020 124396 61.3N 152.3W 3.2-5.1 BBAAA Central Alaska

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

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

O: 30MAY2020 12:56:22 61.1N 140.0W MB=3.3 ECAN Burwash Landing, YT

O: 31MAY2020 22:58:44 61.2N 140.0W ML=2.9 EMSC SOUTHERN YUKON TERRITORY, CANA

P: 27MAY2020 124391 59.0N 139.0W 3.0-4.5 BCAAA Southeast Alaska

ROCKY MOUNTAINS REGION

O: 31MAY2020 13:29:09 31.7N 104.4W ML=2.7 EMSC WESTERN TEXAS