Previous two summaries

STRONG QUAKE SHAKES PANAMA AND COSTA RICA

EARTHQUAKE SUMMARY FOR JULY 21, 2021

The strongest earthquake in the world today occurred in the area south of Panama with M 6.7. It was widely felt with strong intensity in Panama. NEIC reported intensity VIII (with damage) in Panama at Boqueron and VII in Burica, Puerto Armuelles; V in La Concepcion, David, Progreso; IV in Finca, Bagala, Las Lomas and Ouiteno. A series of moderate aftershocks were also felt in the area. At M 6.7 this is the strongest earthquake in the world since the M 7.4 in Qinghai, China on May 21, 2021. The only earthquakes with M>=6.7 within about 250 km of this epicenter in the past 30 years occurred about 250 km to the north on August 20, 1999 and about 200 km to the south on March 31, 1999. Today's activity follows a series of moderate and large earthquakes in the area as noted in the previous issue of this summary:

"The series of earthquakes in Panama and Costa Rica also continued today. This has included an moderate quakes in Costa Rica on July 14, 2021 and an M 6.1 south of Panama on July 17 as noted at the time in this summary:

"The strongest earthquake in the world today was an M 6.1 south of Panama. NEIC reported it was felt with maximum intensity IV in Panama at Cerro Sombrero; IV in San Andres and II-III in Puerto Armuelles, Guarumal, Pedregal, David, Quiterio, Tole, Petrerillos and Golfito, Panama. This is the strongest event in the area south of Panama within about 200 km since an M 6.6 on January 7, 2015. An M 6.2 also occurred about 200 km north of today's epicenter on June 26, 2019.

Forecast 135406 had expected today's event within about 50 km was likely

around July 19." (July 17, 2021, July 21, 2021)

Forecasts 135652 and 135406 had expected today's activity was likely within about 100 km between July 19 and 25.

O: 21JUL2021 21:15:14 7.4N 82.9W Mw=6.7 EMSC SOUTH OF PANAMA

O: 22JUL2021 02:51:05 7.2N 83.0W mb=4.7 EMSC OFF COAST OF COSTA RICA

O: 21JUL2021 22:25:58 7.4N 82.7W mb=4.9 EMSC SOUTH OF PANAMA

O: 21JUL2021 21:34:39 7.8N 82.8W mb=4.7 EMSC SOUTH OF PANAMA

O: 21JUL2021 21:55:35 8.2N 82.9W ML=4.0 EMSC PANAMA-COSTA RICA BORDER REGION

P: 25JUL2021 135652 7.0N 82.0W 3.5-6.1 BAAAA Costa Rica

P: 19JUL2021 135406 7.0N 82.0W 3.5-5.2 AAAAA Costa Rica

An earthquake of M 5.9 also occurred in the series in the Bismarck Sea, Indonesia today. This is the strongest event in this sequence to date. Earthquakes of M 5.7 and 5.8 hit the area on July 19. At the time this summary noted:

"The M 5.8 in the Bismarck Sea occurred near local solar midnight and may have been promoted by high tidal stresses which maximize near this hour and by geomagnetic effects from the moderate geomagnetic storm of two days ago. The last earthquake of equal or greater magnitude in the Bismarck Sea occurred as an M 6.1 on April 27, 2021 about 150 km to the west of today's epicenter. An M 6.3 also occurred in this area on February 7, 2021. Forecast 135420 had expected today's activity in the Bismarck Sea within about 50 km of these epicenter was likely around July 19." (July 19-20, 2021)

Like the activity on July 19, the mainshock today of M 5.9 also occurred within minutes of local solar midnight and was likely promoted by high tidal stresses. These may have been enhanced by high tides associated with the coming full moon as this epicenter is near the maximum longitude for these tides as described in this summary:

"The full moon will arrive on July 24 at 02:37 UT. Longitudes which are at local solar midnight at this time are near 40 West and those at local solar noon near 140 East. These include, in the west, the Atlantic Ocean basin and in the east, the western Pacific subduction zone including Japan and portions of Eastern Indonesia. These areas are currently active and could see a strong earthquake in the next week." (July 20-21, 2021)

O: 21JUL2021 14:26:01 3.4S 146.7E Mw=5.9 EMSC BISMARCK SEA

O: 21JUL2021 23:07:46 3.2S 146.7E mb=4.8 EMSC BISMARCK SEA

P: 19JUL2021 135420 3.0S 146.0E 4.0-5.4 AAAAA New Ireland

The strongest earthquake in the U.S. or Canada today was an M 4.4 off the coast of Northern California. NEIC reported it was felt along the coast of Northern California with intensity II-III in Petrolia, Ferndale, Rio Dell, Fortuna, Carlotta, Eureka, Baside, Arcata and McKinleyville. NEIC reported an aftershock of M 2.8 off northern California was felt with intensity II-III in the area(s) of northern California in Arcata and Redwood City. This event, the third largest in the area in the past year (after events of M 4.5 and 4.7 on January 12 and March 30, 2021), appears to be an aftershock of the M 5.1 which hit this epicenter on July 18. At the time this summary noted in this regard:

"Today's event is the largest in this area off the coast of Northern California in more than a year. Similar events have last occurred in the area as an M 5.2 on March 18, 2020, an M 5.8 on March 9, 2020 and an M 4.6 on June 23, 2019 after a four year lull following an M 5.7 on September 3, 2016. Forecast 135552 had expected today's event within about 25 km was likely in mid-July." (July 18, 2021)

O: 21JUL2021 10:36:37 40.4N 124.9W ML=2.6 EMSC OFFSHORE NORTHERN CALIFORNIA

O: 21JUL2021 12:25:57 40.5N 124.7W ML=2.5 EMSC OFFSHORE NORTHERN CALIFORNIA

O: 21JUL2021 10:05:30 40.3N 124.4W ML=3.8 EMSC OFFSHORE NORTHERN CALIFORNIA

O: 21JUL2021 10:05:30 40.3N 124.4W ML=4.4 ANSS OFFSHORE NORTHERN CALIFORNIA

P: 15JUL2021 135552 40.2N 124.2W 2.5-4.4 CAAAA 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: 22JUL2021 02:12:27 30.1N 70.4E mb=4.5 EMSC PAKISTAN

P: 17JUL2021 135470 29.0N 68.0E 3.5-4.9 BBBAA Pakistan

O: 22JUL2021 01:12:50 49.5N 106.9E mb=4.2 EMSC CENTRAL MONGOLIA

P: 23JUL2021 135797 45.0N 102.0E 4.0-5.4 ACCAA Mongolia

NEIC reported this earthquake of M 4.2 in Mongolia was felt with intensity II-III in the area(s) of Mongolia at Ulaanbaatar and Nalajin Tov.

O: 21JUL2021 07:35:11 51.5N 100.4E mb=3.8 EMSC RUSSIA-MONGOLIA BORDER REGION

P: 21JUL2021 135584 51.0N 98.0E 3.0-4.4 AABAA So. Siberia

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

INDONESIA AND PHILIPPINES

O: 21JUL2021 18:14:07 2.9S 119.4E ML=4.4 EMSC SULAWESI, INDONESIA

O: 21JUL2021 21:08:11 2.9S 119.4E ML=4.1 EMSC SULAWESI, INDONESIA

O: 21JUL2021 17:43:58 3.0S 119.4E Mw=5.2 EMSC SULAWESI, INDONESIA

P: 23JUL2021 135675 4.0S 123.0E 4.0-5.4 AACAA Sulawesi area

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

O: 22JUL2021 03:20:40 0.5N 100.1E ML=4.0 EMSC NORTHERN SUMATRA, INDONESIA

P: 15JUL2021 135410 1.0N 100.0E 4.0-5.4 CAAAA So. Sumatera

P: 25JUL2021 135657 2.0N 99.0E 4.0-5.4 BBAAA So. Sumatera

O: 21JUL2021 14:26:01 3.4S 146.7E Mw=5.9 EMSC BISMARCK SEA

O: 21JUL2021 23:07:46 3.2S 146.7E mb=4.8 EMSC BISMARCK SEA

P: 19JUL2021 135420 3.0S 146.0E 4.0-5.4 AAAAA New Ireland

O: 21JUL2021 09:10:22 4.6N 96.4E ML=4.4 EMSC NORTHERN SUMATRA, INDONESIA

P: 17JUL2021 135410 2.0N 96.0E 4.0-5.6 BCAAA Nicobar Islands

O: 22JUL2021 01:31:45 7.7S 127.8E ML=4.3 EMSC KEPULAUAN BARAT DAYA, INDONESI

P: 24JUL2021 135660 7.0S 127.0E 4.0-5.4 AAAAA Banda Sea

CENTRAL AND SOUTH AMERICA

O: 21JUL2021 15:07:35 5.2S 79.0W mb=4.9 EMSC NORTHERN PERU

P: 24JUL2021 135669 6.0S 79.0W 4.0-5.5 BAAAA No. Peru

NEIC reported this earthquake of M 4.9 in northern Peru was felt with intensity VI in the area(s) of northern Peru at San Ignacio.

O: 21JUL2021 16:44:14 7.0N 73.0W mb=4.2 EMSC NORTHERN COLOMBIA

P: 21JUL2021 135405 7.0N 73.0W 4.0-5.4 AAAAA Colombia

O: 21JUL2021 21:15:14 7.4N 82.9W Mw=6.7 EMSC SOUTH OF PANAMA

O: 22JUL2021 02:51:05 7.2N 83.0W mb=4.7 EMSC OFF COAST OF COSTA RICA

O: 21JUL2021 22:25:58 7.4N 82.7W mb=4.9 EMSC SOUTH OF PANAMA

O: 21JUL2021 21:34:39 7.8N 82.8W mb=4.7 EMSC SOUTH OF PANAMA

O: 21JUL2021 21:55:35 8.2N 82.9W ML=4.0 EMSC PANAMA-COSTA RICA BORDER REGION

P: 25JUL2021 135652 7.0N 82.0W 3.5-6.1 BAAAA Costa Rica

P: 19JUL2021 135406 7.0N 82.0W 3.5-5.2 AAAAA Costa Rica

O: 21JUL2021 09:11:45 7.6N 80.8W ML=4.0 EMSC PANAMA

P: 19JUL2021 135406 7.0N 82.0W 3.5-5.2 AAAAA Costa Rica

O: 21JUL2021 10:56:30 9.6N 84.1W ML=4.0 EMSC COSTA RICA

P: 29JUL2021 135652 9.0N 83.0W 3.5-4.9 CAAAA Costa Rica

P: 31JUL2021 135680 10.0N 84.0W 3.5-5.4 DAAAA Caribbean Sea

O: 22JUL2021 02:16:36 11.3N 87.0W ML=4.2 EMSC NEAR COAST OF NICARAGUA

O: 22JUL2021 01:28:24 11.5N 86.8W Mw=5.3 EMSC NEAR COAST OF NICARAGUA

O: 22JUL2021 01:35:03 11.3N 87.0W ML=4.3 EMSC NEAR COAST OF NICARAGUA

P: 19JUL2021 135450 12.0N 88.0W 3.5-5.2 BAAAA Nicaragua

NEIC reported this earthquake of M 5.3 in Nicaragua was felt with intensity II-III in the area(s) of Nicaragua at Managua.

O: 22JUL2021 01:02:14 12.9N 90.5W ML=4.0 EMSC OFF THE COAST OF EL SALVADOR

P: 24JUL2021 135684 14.0N 90.0W 3.5-5.4 ABAAA Guatemala

O: 21JUL2021 12:16:32 14.2N 92.8W ML=4.5 EMSC OFFSHORE CHIAPAS, MEXICO

P: 21JUL2021 135440 14.0N 92.0W 3.5-5.3 AAAAA Guatemala

O: 21JUL2021 13:07:43 15.3N 93.5W ML=4.0 EMSC OFFSHORE CHIAPAS, MEXICO

P: 24JUL2021 135682 15.0N 93.0W 3.5-5.2 BAAAA Chiapas, Mexico

O: 21JUL2021 17:22:55 17.9N 67.1W ML=3.0 EMSC PUERTO RICO REGION

O: 22JUL2021 06:42:42 18.0N 67.1W Md=3.1 EMSC PUERTO RICO REGION

O: 22JUL2021 04:16:41 18.2N 67.2W Md=3.2 EMSC MONA PASSAGE, PUERTO RICO

P: 24JUL2021 135697 18.0N 67.0W 3.4-5.1 AAAAA Puerto Rico

O: 21JUL2021 11:17:36 19.0N 68.3W ML=3.5 EMSC DOMINICAN REPUBLIC REGION

P: 21JUL2021 135456 18.0N 69.0W 3.4-5.1 AAAAA Puerto Rico

O: 21JUL2021 19:37:43 19.1N 66.0W ML=3.2 EMSC PUERTO RICO REGION

O: 21JUL2021 19:41:22 19.2N 66.0W Md=3.2 EMSC PUERTO RICO REGION

O: 21JUL2021 19:55:44 19.2N 66.0W Md=3.4 EMSC PUERTO RICO REGION

O: 21JUL2021 19:10:59 19.1N 66.0W ML=3.4 EMSC PUERTO RICO REGION

P: 21JUL2021 135461 20.0N 66.0W 3.0-5.0 AAAAA Bahamas/No. Caribbean

O: 22JUL2021 03:29:41 21.9S 68.6W mb=4.4 EMSC ANTOFAGASTA, CHILE

O: 21JUL2021 16:23:56 21.7S 68.6W Mw=4.9 EMSC ANTOFAGASTA, CHILE

P: 20JUL2021 135617 21.0S 67.0W 4.0-5.4 AABAA Argentina

NEIC reported this earthquake of M 4.9 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile at Iquique, Tarapaca.

O: 21JUL2021 16:23 21.7S 68.7W mb=4.8 GUC Tarapaca at Alto Hospicio, Iqu

P: 20JUL2021 135617 21.0S 67.0W 4.0-5.4 AABAA Argentina

GUC reported this earthquake was felt with intensity III in Tarapaca at Alto Hospicio, Iquique and in Quillagua, Antofagasta, Chile.

O: 21JUL2021 02:02 20.9S 69.8W mb=4.2 GUC Tarapaca at Alto Hospicio, El

P: 21JUL2021 135628 20.0S 70.0W 4.0-5.5 AAAAA So. Peru/Bolivia

GUC reported this earthquake was felt with intensity III in Tarapaca at Alto Hospicio, El Loa, Iquique, II in Pica, Chile.

O: 22JUL2021 02:51:05 7.2N 83.0W mb=4.7 EMSC OFF COAST OF COSTA RICA

O: 21JUL2021 22:25:58 7.4N 82.7W mb=4.9 EMSC SOUTH OF PANAMA

O: 21JUL2021 21:34:39 7.8N 82.8W mb=4.7 EMSC SOUTH OF PANAMA

O: 21JUL2021 21:55:35 8.2N 82.9W ML=4.0 EMSC PANAMA-COSTA RICA BORDER REGION

AFRICA AND EUROPE

O: 22JUL2021 00:48:01 38.9N 26.1E mb=4.3 EMSC NEAR THE COAST OF WESTERN TURKEY

O: 22JUL2021 01:20:21 38.9N 26.1E mb=4.1 EMSC NEAR THE COAST OF WESTERN TURKEY

O: 21JUL2021 23:03:45 38.9N 26.1E mb=4.0 EMSC NEAR THE COAST OF WESTERN TURK

P: 27JUL2021 135722 38.0N 26.0E 3.0-4.6 CAAAA Aegean Sea

NEIC reported this earthquake of M 4.3 in western Turkey was felt with intensity II-III in the area(s) of Lesvos, Greece.

SOUTHWEST PACIFIC

O: 22JUL2021 02:24:58 14.9S 166.9E Mw=5.5 EMSC VANUATU

P: 28JUL2021 135870 15.0S 168.0E 4.0-5.4 CAAAA Vanuatu Islands

O: 21JUL2021 15:20:19 18.1S 177.9W mb=4.3 EMSC FIJI REGION

P: 18JUL2021 135614 19.0S 178.0W 4.0-5.6 BAAAA Tonga Islands

O: 21JUL2021 09:24:25 20.3S 177.6W mb=4.4 EMSC FIJI REGION

P: 18JUL2021 135614 19.0S 178.0W 4.0-5.6 BBAAA Tonga Islands

OCEAN RIDGES

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

ZEALANDIA AND AUSTRALIA REGION

O: 21JUL2021 13:48:26 27.6S 178.5W mb=4.5 EMSC KERMADEC ISLANDS REGION

P: 27JUL2021 135875 28.0S 177.0W 4.0-5.4 CAAAA No. Kermadec Islands

O: 21JUL2021 18:52:06 32.3S 179.5E ML=4.5 EMSC SOUTH OF KERMADEC ISLANDS

P: 16JUL2021 135636 33.0S 178.0E 4.0-5.6 BAAAA So. Kermadec Islands

JAPAN AND KURIL ISLANDS

O: 21JUL2021 17:18:30 37.6N 141.7E ML=3.9 EMSC NEAR EAST COAST OF HONSHU, JAP

P: 24JUL2021 135756 37.0N 141.0E 4.0-5.4 BAAAA Off East Coast Honshu

U.S./CANADA*

WESTERN U.S./CANADA

CALIFORNIA

O: 22JUL2021 00:56:01 38.2N 122.5W Md=2.8 EMSC SAN FRANCISCO BAY AREA, CALIF.

P: 24JUL2021 135734 37.8N 122.6W 2.5-4.6 AAAAA Central California

NEIC reported this earthquake of M 2.8 in the San Francisco Bay, California was felt with intensity II-III in the area(s) of the San Francisco Bay, California at San Rafael, Vallejo, San Francisco, Dixon and Los Banos.

O: 21JUL2021 11:58:17 38.4N 119.5W ml=2.0 EMSC CENTRAL CALIFORNIA

P: 23JUL2021 135729 38.7N 119.7W 2.5-4.6 AAAAA California/Nevada area

O: 22JUL2021 05:50:30 40.4N 125.7W ML=2.5 EMSC OFF COAST OF NORTHERN CALIFORN

P: 26JUL2021 135806 41.8N 126.9W 2.5-4.8 BBAAA Off Coast of No. Calif

O: 21JUL2021 08:08:27 40.5N 119.7W ml=2.2 EMSC NEVADA

P: 21JUL2021 135531 40.2N 119.6W 2.5-4.4 AAAAA California/Nevada area

O: 22JUL2021 03:50:14 32.8N 115.5W ML=2.5 EMSC SOUTHERN CALIFORNIA

O: 22JUL2021 04:29:19 32.8N 115.5W ML=2.8 EMSC SOUTHERN CALIFORNIA

O: 22JUL2021 04:37:05 32.8N 115.5W Ml=2.1 EMSC SOUTHERN CALIFORNIA

O: 22JUL2021 01:59:32 33.0N 115.5W Ml=2.3 EMSC SOUTHERN CALIFORNIA

O: 22JUL2021 06:50:51 33.0N 115.5W Ml=2.0 EMSC SOUTHERN CALIFORNIA

O: 22JUL2021 03:48:11 32.8N 115.5W ML=2.6 EMSC SOUTHERN CALIFORNIA

P: 21JUL2021 135511 32.6N 116.1W 2.5-4.6 AAAAA So. California

NEIC reported these earthquakes of M 3.1, 3.0, 3.1 in Southern California were felt with intensity II-III in the area(s) of Southern California at Heber, El Centro, Mexicali, Imperial, Thermal and San Diego.

O: 21JUL2021 18:13:07 38.1N 118.1W ML=2.4 EMSC NEVADA

O: 21JUL2021 21:25:32 38.1N 118.0W ML=2.5 EMSC NEVADA

O: 21JUL2021 07:28:47 38.2N 118.3W ml=2.3 EMSC NEVADA

O: 21JUL2021 12:04:18 38.2N 118.2W ML=3.7 EMSC NEVADA

O: 21JUL2021 15:22:59 38.2N 118.3W ml=2.4 EMSC NEVADA

O: 21JUL2021 21:24:32 38.2N 118.7W ml=2.5 EMSC NEVADA

O: 21JUL2021 13:14:29 38.1N 118.0W ml=2.0 EMSC NEVADA

P: 25JUL2021 135728 37.9N 118.2W 2.5-4.9 BAAAA California/Nevada area

O: 21JUL2021 14:00:48 38.4N 119.5W Md=2.3 EMSC CENTRAL CALIFORNIA

O: 21JUL2021 09:36:13 38.5N 119.5W ml=2.3 EMSC CENTRAL CALIFORNIA

O: 21JUL2021 11:26:50 38.5N 119.4W ml=2.1 EMSC CENTRAL CALIFORNIA

O: 21JUL2021 14:14:42 38.5N 119.4W ml=2.0 EMSC CENTRAL CALIFORNIA

O: 21JUL2021 23:02:00 38.5N 119.5W ml=2.1 EMSC CENTRAL CALIFORNIA

O: 21JUL2021 23:33:38 38.5N 119.5W ML=3.0 EMSC CENTRAL CALIFORNIA

O: 22JUL2021 01:56:34 38.5N 119.4W MD=2.1 EMSC CENTRAL CALIFORNIA

O: 22JUL2021 06:38:45 38.5N 119.5W Md=2.1 EMSC CENTRAL CALIFORNIA

O: 22JUL2021 03:12:02 38.8N 119.8W ML=2.5 EMSC NORTHERN CALIFORNIA

P: 23JUL2021 135729 38.7N 119.7W 2.5-4.6 AAAAA California/Nevada area

O: 21JUL2021 21:56:14 38.8N 122.8W Md=2.3 EMSC NORTHERN CALIFORNIA

O: 21JUL2021 07:51:39 38.8N 122.9W Md=2.3 EMSC NORTHERN CALIFORNIA

P: 19JUL2021 135486 38.7N 122.7W 2.5-4.4 AAAAA Central California

O: 21JUL2021 10:36:37 40.4N 124.9W ML=2.6 EMSC OFFSHORE NORTHERN CALIFORNIA

O: 21JUL2021 12:25:57 40.5N 124.7W ML=2.5 EMSC OFFSHORE NORTHERN CALIFORNIA

O: 21JUL2021 10:05:30 40.3N 124.4W ML=3.8 EMSC OFFSHORE NORTHERN CALIFORNIA

O: 21JUL2021 10:05:30 40.3N 124.4W ML=4.4 ANSS OFFSHORE NORTHERN CALIFORNIA

P: 15JUL2021 135552 40.2N 124.2W 2.5-4.4 CAAAA Off Coast of No. Calif

ALASKA

O: 21JUL2021 11:03:42 51.8N 177.9W mb=4.3 EMSC ANDREANOF ISLANDS, ALEUTIAN IS

P: 26JUL2021 135823 51.6N 177.6W 3.5-5.1 BAAAA Andreanoff Isls, Aleutians

O: 22JUL2021 01:40:12 54.7N 161.1W ML=3.5 EMSC ALASKA PENINSULA

P: 25JUL2021 135840 54.7N 161.2W 3.5-4.9 BAAAA Unimak Islands, Aleutians

O: 21JUL2021 15:12:14 61.4N 150.0W ML=3.6 EMSC SOUTHERN ALASKA

P: 18JUL2021 135592 61.3N 150.9W 3.2-5.1 BAAAA Central Alaska

P: 20JUL2021 135590 60.8N 151.7W 3.2-5.3 AAAAA Central Alaska

NEIC reported this earthquake of M 3.3 in Southern Alaska was felt with intensity II-III in the area(s) of Southern Alaska at Wasilla, Elmendorf AFB, Anchorage, Willow.

O: 22JUL2021 05:30:15 62.9N 148.4W ML=3.2 EMSC CENTRAL ALASKA

P: 24JUL2021 135847 62.7N 149.3W 3.2-5.2 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: 21JUL2021 08:49:39 44.3N 115.2W Ml=2.2 EMSC SOUTHERN IDAHO

P: 17JUL2021 135542 44.4N 115.1W 2.0-4.1 BAAAA Montana/Idaho

EASTERN U.S./CANADA

O: 21JUL2021 17:19:01 29.2N 97.7W mb=2.7 EMSC SOUTHERN TEXAS

P: 26JUL2021 135714 28.0N 97.0W 3.0-4.4 BBAAA Northern Mexico

NEIC reported this earthquake of M 3.1 in Southern Texas was felt with intensity II-III in the area(s) of Southern Texas at Stockdale, San Antonio and Corpus Christi.

O: 21JUL2021 13:54:39 36.1N 99.2W ML=2.5 EMSC OKLAHOMA

P: 26JUL2021 135778 36.0N 98.0W 2.0-4.1 BAAAA Southern Plains

O: 22JUL2021 02:09:23 36.4N 97.8W ML=2.0 EMSC OKLAHOMA

P: 18JUL2021 135524 37.0N 98.0W 2.0-3.9 BAAAA Southern Plains

O: 22JUL2021 01:05:34 49.6N 67.7W MB=1.4 ECAN Baie-Comeau, QC

P: 24JUL2021 135796 49.3N 67.5W 2.0-3.9 AAAAA Maine

O: 21JUL2021 03:18:30 49.3N 66.3W MB=2.5 ECAN Sainte-Anne-des-Monts, QC

P: 18JUL2021 135534 49.0N 66.0W 2.0-4.0 BAAAA E. of Maine

O: 20JUL2021 09:09:35 47.7N 70.0W MB=1.8 ECAN Charlevoix Seismic Zone

O: 20JUL2021 09:06:19 47.7N 70.0W MB=0.8 ECAN Charlevoix Seismic Zone

P: 17JUL2021 135534 47.0N 70.0W 2.0-3.9 BAAAA E. of Maine

HAWAII

O: 22JUL2021 02:11:03 19.4N 155.3W ML=3.7 EMSC ISLAND OF HAWAII, HAWAII

O: 21JUL2021 20:30:28 19.2N 155.4W Ml=3.1 EMSC ISLAND OF HAWAII, HAWAII

P: 25JUL2021 135708 19.3N 155.1W 4.0-5.6 BAAAA Hawaii area

NEIC reported this earthquake of M 3.4 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Volcano, Pahoa, Pahaa and Laupahoehoe.

An earlier event of M 3.2 was felt in Hawaii at Naalehu and Kaupakaka.

MODERATE QUAKES IN TRISTAN DA CUNHA; PAKISTAN

EARTHQUAKE SUMMARY FOR JULY 20, 2021

The most unusual earthquake located in the world today was an M 5.0 in the area of the South Atlantic near Tristan da Cunha. It was not reported felt in this remote area. The last earthquake within about 300 km of today's epicenter with M>=5 occurred as a series (M 5.0, 5.4, 5.2) on January 15, 2021 and prior to that an M 5.9 on August 31, 2020.

O: 21JUL2021 02:19:04 35.4S 15.8W mb=5.0 EMSC TRISTAN DA CUNHA REGION

An M 5.1 also occurred in Pakistan today. NEIC reported this earthquake of M 5.1 in Pakistan was felt with intensity II-III in the area(s) of Pakistan with V in Jampur, IV in Rajanpur, Dajal, and Muzaffargarh, Punjab and II-III in Dera Ghazi and Kashmor. The only earthquake within about 250 km of this event with M>=5.1 in the past year was an M 5.5 about 300 km to the northwest on November 14, 2020. The last within 250 km were of M 5.2 on June 17, 2018 and an M 5.3 on October 23, 2015. Forecast 135470 had expected this epicenter would be active around July 17.

O: 20JUL2021 23:54:26 29.3N 70.1E Mw=5.1 EMSC PAKISTAN

P: 17JUL2021 135470 29.0N 68.0E 3.5-4.9 BABAA Pakistan

Moderate, but not unusual earthquakes of M 5.1 and 5.2 also occurred today in Indonesia and Mindanao, Philippines. An active swarm in Sulawesi, Indonesia today included several M 4.1 events and may expand in coming days. These had been expected within about 150 km in forecasts 135404 and 135412 in mid-July.

O: 20JUL2021 20:26:46 5.6N 126.8E Mw=5.2 EMSC MINDANAO, PHILIPPINES

P: 19JUL2021 135404 7.0N 126.0E 4.0-5.4 ABAAA Central Philippines

O: 21JUL2021 04:33:35 7.5S 128.3E mb=5.1 EMSC KEPULAUAN BARAT DAYA, INDONESI

P: 17JUL2021 135412 8.0S 128.0E 4.0-5.6 BAAAA Banda Sea

O: 21JUL2021 05:39:03 2.9S 119.4E ML=4.1 EMSC SULAWESI, INDONESIA

O: 20JUL2021 21:40:29 2.9S 119.3E ML=4.1 EMSC SULAWESI, INDONESIA

P: 16JUL2021 135401 0.0N 120.0E 4.0-5.4 BCAAA Celebes Sea

An earthquake of M 4.4 in the Ryukyu Islands today continued moderate seismicity in that area. It was reported by JMA to have been lightly felt in Okinawa, Japan. This activity appears to be related to the passage of Typhoon In-Fa through the area as previously noted in this summary:

"Typhoon In-Fa continued today south of Honshu, Japan with winds up to 115 kts. It is expected to track to the northwest reaching the Central Ryukyu Islands and Taiwan around July 21. Some seismic enhance is likely in these areas at that time." (July 18-21, 2021)

Forecast 135472 had expected this event was likely in mid-July within about

50 km of today's epicenter.

O: 20JUL2021 13:33:56 25.8N 128.3E mb=4.4 EMSC RYUKYU ISLANDS, JAPAN

P: 16JUL2021 135472 26.0N 129.0E 4.0-5.6 BAAAA Ryukyu Islands

The series of earthquakes in Panama and Costa Rica also continued today. This has included an moderate quakes in Costa Rica on July 14, 2021 and an M 6.1 south of Panama on July 17 as noted at the time in this summary:

Forecast 135406 had expected today's event within about 50 km was likely around July 19." (July 17, 2021)

O: 21JUL2021 03:28:59 9.8N 81.1W ML=3.9 EMSC PANAMA

P: 19JUL2021 135406 7.0N 82.0W 3.5-5.2 ACAAA Costa Rica

NEIC reported the earthquake of M 3.9 in Costa Rica was felt with intensity II-III in the area(s) of Costa Rica at Saltrillos, San Antonio (V); San Jose, San Rafael (IV) and Pattara, San Felipe, Tobosi, Curridabat, San Pedro and Escazu, San Jose.

O: 20JUL2021 23:57:14 9.8N 84.1W mb=3.9 EMSC COSTA RICA

P: 19JUL2021 135406 7.0N 82.0W 3.5-5.2 ACBAA Costa Rica

OTHER GLOBAL EARTHQUAKE ACTIVITY

ASIA

O: 20JUL2021 23:16:43 23.7N 65.7E mb=4.1 EMSC OFF COAST OF PAKISTAN

P: 17JUL2021 135470 29.0N 68.0E 3.5-4.9 BCBAA Pakistan

O: 20JUL2021 19:01:23 27.8N 103.0E mb=4.3 EMSC SICHUAN-YUNNAN-GUIZHOU RG, CHI

P: 21JUL2021 135469 28.0N 101.0E 4.0-5.5 AABAA Myanmar

O: 20JUL2021 23:54:26 29.3N 70.1E Mw=5.1 EMSC PAKISTAN

P: 17JUL2021 135470 29.0N 68.0E 3.5-4.9 BABAA Pakistan

INDONESIA AND PHILIPPINES

O: 21JUL2021 02:18:06 1.8N 127.4E ML=4.1 EMSC HALMAHERA, INDONESIA

P: 21JUL2021 135408 3.0N 128.0E 4.0-5.4 ABAAA Halmahera

O: 21JUL2021 05:39:03 2.9S 119.4E ML=4.1 EMSC SULAWESI, INDONESIA

O: 20JUL2021 21:40:29 2.9S 119.3E ML=4.1 EMSC SULAWESI, INDONESIA

P: 16JUL2021 135401 0.0N 120.0E 4.0-5.4 BCAAA Celebes Sea

O: 21JUL2021 06:59:51 4.6N 96.3E ML=4.5 EMSC NORTHERN SUMATRA, INDONESIA

P: 17JUL2021 135410 2.0N 96.0E 4.0-5.6 BCAAA Nicobar Islands

O: 20JUL2021 20:26:46 5.6N 126.8E Mw=5.2 EMSC MINDANAO, PHILIPPINES

P: 19JUL2021 135404 7.0N 126.0E 4.0-5.4 ABAAA Central Philippines

O: 20JUL2021 12:20:00 6.6S 130.0E ML=4.0 EMSC BANDA SEA

P: 14JUL2021 135432 7.0S 131.0E 4.0-5.4 CAAAA West Irian, PNG

O: 21JUL2021 04:33:35 7.5S 128.3E mb=5.1 EMSC KEPULAUAN BARAT DAYA, INDONESI

P: 17JUL2021 135412 8.0S 128.0E 4.0-5.6 BAAAA Banda Sea

O: 21JUL2021 00:42:13 9.3S 122.0E ML=4.2 EMSC SAVU SEA

P: 16JUL2021 135417 8.0S 121.0E 4.0-5.4 BBAAA Flores Island area

CENTRAL AND SOUTH AMERICA

O: 20JUL2021 12:15:33 0.8S 81.0W ML=4.2 EMSC OFF COAST OF ECUADOR

O: 20JUL2021 13:26:25 0.9S 80.9W ML=4.0 EMSC NEAR COAST OF ECUADOR

P: 14JUL2021 135416 1.0S 81.0W 4.0-5.5 CAAAA Ecuador

O: 21JUL2021 03:28:59 9.8N 81.1W ML=3.9 EMSC PANAMA

P: 19JUL2021 135406 7.0N 82.0W 3.5-5.2 ACAAA Costa Rica

O: 20JUL2021 23:57:14 9.8N 84.1W mb=3.9 EMSC COSTA RICA

P: 19JUL2021 135406 7.0N 82.0W 3.5-5.2 ACBAA Costa Rica

O: 20JUL2021 21:17:45 14.6N 93.3W ML=4.0 EMSC OFFSHORE CHIAPAS, MEXICO

O: 20JUL2021 16:39:35 14.6N 93.4W ML=4.1 EMSC OFFSHORE CHIAPAS, MEXICO

P: 20JUL2021 135437 15.0N 94.0W 3.5-5.1 AAAAA Chiapas, Mexico

O: 20JUL2021 15:42:34 15.6S 72.2W mb=4.1 EMSC SOUTHERN PERU

P: 18JUL2021 135610 16.0S 73.0W 4.0-5.4 AAAAA So. Peru/Bolivia

O: 20JUL2021 18:30:58 15.9N 94.8W ML=4.0 EMSC OFFSHORE OAXACA, MEXICO

P: 20JUL2021 135437 15.0N 94.0W 3.5-5.1 AAAAA Chiapas, Mexico

O: 20JUL2021 22:35:21 16.8N 95.2W ML=4.2 EMSC OAXACA, MEXICO

O: 21JUL2021 03:07:00 15.9N 96.3W ML=4.0 EMSC OAXACA, MEXICO

P: 18JUL2021 135453 15.0N 98.0W 3.5-5.8 BABAA Oaxaca, Mexico

O: 20JUL2021 21:35:43 18.0N 67.1W Md=3.0 EMSC PUERTO RICO

P: 20JUL2021 135461 20.0N 67.0W 3.0-4.9 ABAAA Bahamas/No. Caribbean

O: 21JUL2021 05:05:22 18.7N 102.8W ML=4.1 EMSC MICHOACAN, MEXICO

P: 20JUL2021 135447 18.0N 102.0W 3.5-5.5 AAAAA Michoacan, Mexico

O: 21JUL2021 06:19:38 19.2N 66.5W Md=3.5 EMSC PUERTO RICO REGION

P: 21JUL2021 135461 20.0N 66.0W 3.0-5.0 AAAAA Bahamas/No. Caribbean

O: 20JUL2021 22:15:35 19.6N 103.7W ML=4.0 EMSC JALISCO, MEXICO

P: 20JUL2021 135447 18.0N 102.0W 3.5-5.5 ABBAA Michoacan, Mexico

O: 21JUL2021 02:02:39 20.9S 69.9W mb=4.2 EMSC TARAPACA, CHILE

P: 21JUL2021 135628 20.0S 70.0W 4.0-5.5 AAAAA So. Peru/Bolivia

NEIC reported this earthquake of M 4.2 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile at Iquique, Tarapaca.

O: 20JUL2021 12:41:59 28.0N 112.3W ML=3.5 EMSC GULF OF CALIFORNIA

P: 15JUL2021 135465 28.0N 112.0W 3.5-5.2 BAAAA Gulf of California

AFRICA AND EUROPE

O: 20JUL2021 17:44:15 35.1N 25.2E ML=4.2 EMSC CRETE, GREECE

P: 18JUL2021 135490 34.0N 24.0E 3.0-4.9 ABAAA Crete

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

SOUTHWEST PACIFIC

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

OCEAN RIDGES

O: 21JUL2021 02:19:04 35.4S 15.8W mb=5.0 EMSC TRISTAN DA CUNHA REGION

ZEALANDIA AND AUSTRALIA REGION

O: 20JUL2021 14:41:22 32.9S 178.9W mb=4.7 EMSC SOUTH OF KERMADEC ISLANDS

O: 20JUL2021 08:00:34 34.5S 179.7E ML=4.5 EMSC SOUTH OF KERMADEC ISLANDS

P: 16JUL2021 135636 33.0S 178.0E 4.0-5.6 BABAA So. Kermadec Islands

JAPAN AND KURIL ISLANDS

O: 20JUL2021 13:33:56 25.8N 128.3E mb=4.4 EMSC RYUKYU ISLANDS, JAPAN

P: 16JUL2021 135472 26.0N 129.0E 4.0-5.6 BAAAA Ryukyu Islands

O: 20JUL2021 15:55:29 46.8N 153.1E mb=4.4 EMSC KURIL ISLANDS

P: 17JUL2021 135546 46.0N 155.0E 3.5-5.5 BABAA NE Pacific

U.S./CANADA*

WESTERN U.S./CANADA

CALIFORNIA

O: 20JUL2021 23:12:22 38.5N 119.5W Md=2.0 EMSC CENTRAL CALIFORNIA

O: 21JUL2021 03:50:11 38.5N 119.5W ML=2.9 EMSC CENTRAL CALIFORNIA

O: 21JUL2021 04:21:09 38.5N 119.5W ML=2.6 EMSC CENTRAL CALIFORNIA

O: 20JUL2021 07:55:57 38.6N 119.5W ml=2.0 EMSC CENTRAL CALIFORNIA

O: 20JUL2021 17:27:35 38.6N 119.5W ml=2.0 EMSC CENTRAL CALIFORNIA

O: 20JUL2021 21:35:36 38.5N 119.5W ml=2.0 EMSC CENTRAL CALIFORNIA

P: 21JUL2021 135480 38.3N 119.3W 2.5-4.6 AAAAA California/Nevada area

O: 20JUL2021 09:16:37 31.4N 115.8W ML=3.3 EMSC BAJA CALIFORNIA, MEXICO

P: 16JUL2021 135509 31.9N 115.3W 2.5-4.4 BAAAA So. California

O: 20JUL2021 08:55:43 35.7N 117.5W Ml=2.3 EMSC SOUTHERN CALIFORNIA

P: 18JUL2021 135519 35.9N 117.7W 2.5-4.8 AAAAA So. California

O: 20JUL2021 19:16:56 33.1N 115.6W Ml=2.2 EMSC SOUTHERN CALIFORNIA

P: 21JUL2021 135511 32.6N 116.1W 2.5-4.6 AAAAA So. California

O: 20JUL2021 17:01:23 36.2N 117.9W Ml=2.7 EMSC CENTRAL CALIFORNIA

P: 18JUL2021 135519 35.9N 117.7W 2.5-4.8 AAAAA So. California

O: 21JUL2021 03:40:24 36.6N 120.4W Md=2.4 EMSC CENTRAL CALIFORNIA

P: 16JUL2021 135484 36.6N 120.7W 2.5-4.6 BAAAA Central California

O: 21JUL2021 01:29:15 36.8N 121.5W ML=2.5 EMSC CENTRAL CALIFORNIA

P: 21JUL2021 135485 36.8N 121.3W 2.5-4.6 AAAAA Central California

NEIC reported this earthquake of M 2.9 in Central California was felt with intensity II-III in the area(s) of Central California at San Juan Bautista, Salinas, Aromas, Castroville, Marina and Gilroy.

O: 20JUL2021 23:50:02 38.1N 118.0W ml=2.2 EMSC NEVADA

O: 21JUL2021 01:48:44 38.1N 118.8W Md=2.2 EMSC CENTRAL CALIFORNIA

O: 20JUL2021 07:28:41 38.2N 117.8W ml=2.1 EMSC NEVADA

P: 21JUL2021 135481 38.4N 118.7W 2.5-4.9 AAAAA California/Nevada area

O: 20JUL2021 12:54:19 38.8N 122.8W Md=2.0 EMSC NORTHERN CALIFORNIA

P: 19JUL2021 135486 38.7N 122.7W 2.5-4.4 AAAAA Central California

O: 20JUL2021 13:19:59 39.0N 119.1W ml=2.1 EMSC NEVADA

P: 21JUL2021 135480 38.3N 119.3W 2.5-4.6 AAAAA California/Nevada area

O: 21JUL2021 01:57:28 40.7N 123.9W Md=2.7 EMSC NORTHERN CALIFORNIA

P: 19JUL2021 135551 40.0N 123.0W 2.5-4.6 AAAAA Northern California

ALASKA

O: 20JUL2021 13:21:40 51.1N 176.3W mb=3.6 EMSC ANDREANOF ISLANDS, ALEUTIAN IS

P: 16JUL2021 135572 51.3N 176.8W 3.5-5.0 BAAAA Andreanoff Isls, Aleutians

O: 20JUL2021 16:25:56 61.5N 146.5W ML=3.0 EMSC SOUTHERN ALASKA

P: 17JUL2021 135591 61.2N 147.4W 3.2-5.1 BAAAA Central Alaska

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

O: 20JUL2021 10:49:38 48.9N 122.5W Ml=2.6 EMSC WASHINGTON

P: 21JUL2021 135566 48.0N 123.0W 2.0-4.1 AAAAA Washington state, U.S.

NEIC reported this earthquake of M 2.6 in Washington State was felt with intensity II-III in the area(s) of Washington State at Bellingham, Ferndale, Lynden, Abbotsford and Victoria, British Columbia, Canada.

ROCKY MOUNTAINS REGION

O: 20JUL2021 11:19:58 44.3N 115.2W Ml=2.9 EMSC SOUTHERN IDAHO

P: 17JUL2021 135542 44.4N 115.1W 2.0-4.1 BAAAA Montana/Idaho

EASTERN U.S./CANADA

O: 20JUL2021 00:26:35 47.6N 66.2W MB=1.7 ECAN Petit Rocher, NB

P: 18JUL2021 135534 49.0N 66.0W 2.0-4.0 ABAAA E. of Maine

O: 20JUL2021 00:16:07 44.9N 79.1W MB=1.5 ECAN Gravenhurst, ON

P: 21JUL2021 135556 46.0N 81.0W 2.0-4.4 ABBAA Ohio/Lake Erie

O: 19JUL2021 19:56:41 48.9N 68.2W MB=1.9 ECAN Chute-aux-Outardes, QC

P: 18JUL2021 135534 49.0N 66.0W 2.0-4.0 AABAA E. of Maine

O: 20JUL2021 18:17:16 35.4N 97.9W ML=2.1 EMSC OKLAHOMA

P: 18JUL2021 135524 37.0N 98.0W 2.0-3.9 ABAAA Southern Plains

HAWAII

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

MODERATE QUAKES SHAKE SOUTHWEST PACIFIC

EARTHQUAKE SUMMARY FOR JULY 19, 2021

The largest earthquakes in the world today were an M 5.7 and M 5.8 in the Bismarck Sea. It was preceded by an M 5.0 foreshock. NEIC reported these events were strongly felt with intensity up to VIII in Lorengau Manus, Papua New Guinea. An M 5.7 also shook the region of New Britain today. The M 5.8 in the Bismarck Sea occurred near local solar midnight and may have been promoted by high tidal stresses which maximize near this hour and by geomagnetic effects from the moderate geomagnetic storm of two days ago. The last earthquake of equal or greater magnitude in the Bismarck Sea occurred as an M 6.1 on April 27, 2021 about 150 km to the west of today's epicenter. An M 6.3 also occurred in this area on February 7, 2021. Forecast 135420 had expected today's activity in the Bismarck Sea within about 50 km of these epicenter was likely around July 19.

O: 19JUL2021 19:42:33 3.3S 146.7E mb=5.0 EMSC BISMARCK SEA

O: 19JUL2021 20:30:41 3.3S 146.5E Mw=5.7 EMSC BISMARCK SEA

O: 19JUL2021 20:24:39 3.5S 146.4E ML=4.6 EMSC BISMARCK SEA

O: 19JUL2021 20:57:06 3.6S 147.0E ML=4.7 EMSC BISMARCK SEA

O: 19JUL2021 15:22:32 3.3S 146.9E Mw=5.8 EMSC BISMARCK SEA

O: 19JUL2021 20:00:55 3.9S 146.3E ML=4.7 EMSC BISMARCK SEA

P: 19JUL2021 135420 3.0S 146.0E 4.0-5.4 AAAAA New Ireland

The M 5.7 in the New Britain area had been expected within about 50 km

in forecast 135419 to occur in mid-July.

O: 20JUL2021 04:22:47 5.5S 153.9E mb=4.8 EMSC NEW IRELAND REGION, P.N.G.

O: 19JUL2021 23:02:08 5.0S 152.2E Mw=5.7 EMSC NEW BRITAIN REGION, P.N.G.

P: 15JUL2021 135419 5.0S 153.0E 4.0-5.5 BAAAA New Britain

The strongest earthquake in the U.S. outside Alaska today was an M 4.0 in New Mexico near the Texas border. NEIC reported it was felt with intensity III in New Mexico at Carlsbad and Jai and in Mentone, Texas. This area has seen an upsurge in seismicity in recent months, possibly related to oil and gas extraction in the region. The last earthquake of M>=4 in the area was an M 4.4 on June 25, 2021 but four other such events have occurred in the region in the past five months. The activity began with an M 5.0 on March 26, 2020. There were no earthquakes of M>=4 in the area from 2010 to 2020.

Forecast 135508 had expected today's activity within about 100 km was likely

around July 18.

O: 20JUL2021 02:11:06 31.6N 104.6W ML=2.8 EMSC WESTERN TEXAS

O: 19JUL2021 11:23:25 32.1N 103.7W ML=3.9 EMSC NEW MEXICO

O: 19JUL2021 11:23:25 32.1N 103.7W ML=4.0 ANSS NEW MEXICO

P: 18JUL2021 135508 32.5N 104.6W 2.0-4.0 AAAAA SW U.S.A

The strongest earthquake in Alaska today was an M 4.3 in the Kenai Peninsula. NEIC reported it was felt with intensity II-III in Alaska at Clam Gulch, Ninilchik, Kasilof, Anchor Point, Soldotna, Sterling, Homer, Kenai, Copper Landing and Moose Pass. The last earthquake in the Kenai Peninsula, Alaska region with larger magnitude was an M 4.7 on July 1, 2021. The only other such event in this region in the past year was an M 4.4 on January 26, 2021. Forecast 135590 had expected today's activity was likely within about 50 km around July 20.

O: 19JUL2021 10:52:19 60.2N 151.8W Mw=4.3 EMSC KENAI PENINSULA, ALASKA

P: 20JUL2021 135590 60.8N 151.7W 3.2-5.3 AAAAA Central Alaska

OTHER GLOBAL EARTHQUAKE ACTIVITY

ASIA

O: 20JUL2021 00:15:16 39.7N 73.6E mb=4.3 EMSC KYRGYZSTAN

P: 16JUL2021 135491 39.0N 71.0E 3.8-5.5 BABAA Hindu Kush/Pakistan

O: 20JUL2021 01:27:00 41.6N 81.0E mb=4.5 EMSC SOUTHERN XINJIANG, CHINA

P: 15JUL2021 135539 41.0N 83.0E 4.0-5.4 BABAA Kirgizstan/Xinjiang

O: 19JUL2021 22:06:46 56.0N 113.5E mb=4.6 EMSC BURYATIYA, RUSSIA

P: 19JUL2021 135584 56.0N 110.0E 3.0-4.5 AABAA So. Siberia

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

INDONESIA AND PHILIPPINES

O: 20JUL2021 03:34:27 1.3N 97.0E ML=4.0 EMSC NIAS REGION, INDONESIA

P: 17JUL2021 135410 2.0N 96.0E 4.0-5.6 BAAAA Nicobar Islands

O: 19JUL2021 18:39:37 3.8N 126.9E ML=4.5 EMSC KEPULAUAN TALAUD, INDONESIA

P: 21JUL2021 135408 3.0N 128.0E 4.0-5.4 AAAAA Halmahera

O: 19JUL2021 22:19:16 5.6N 126.6E ML=4.7 EMSC MINDANAO, PHILIPPINES

P: 14JUL2021 135408 6.0N 127.0E 4.0-5.4 BAAAA Halmahera

O: 19JUL2021 07:27:53 8.9N 126.8E mb=4.5 EMSC MINDANAO, PHILIPPINES

P: 17JUL2021 135404 8.0N 125.0E 4.0-5.5 AABAA Central Philippines

O: 19JUL2021 17:53:18 10.5N 125.1E ML=4.4 EMSC LEYTE, PHILIPPINES

P: 15JUL2021 135444 10.0N 127.0E 3.5-4.9 AABAA Luzon, Philippines

O: 19JUL2021 19:42:33 3.3S 146.7E mb=5.0 EMSC BISMARCK SEA

O: 19JUL2021 20:30:41 3.3S 146.5E Mw=5.7 EMSC BISMARCK SEA

O: 19JUL2021 20:24:39 3.5S 146.4E ML=4.6 EMSC BISMARCK SEA

O: 19JUL2021 20:57:06 3.6S 147.0E ML=4.7 EMSC BISMARCK SEA

O: 19JUL2021 15:22:32 3.3S 146.9E Mw=5.8 EMSC BISMARCK SEA

O: 19JUL2021 20:00:55 3.9S 146.3E ML=4.7 EMSC BISMARCK SEA

P: 19JUL2021 135420 3.0S 146.0E 4.0-5.4 AAAAA New Ireland

O: 20JUL2021 04:22:47 5.5S 153.9E mb=4.8 EMSC NEW IRELAND REGION, P.N.G.

O: 19JUL2021 23:02:08 5.0S 152.2E Mw=5.7 EMSC NEW BRITAIN REGION, P.N.G.

P: 15JUL2021 135419 5.0S 153.0E 4.0-5.5 BAAAA New Britain

CENTRAL AND SOUTH AMERICA

O: 19JUL2021 15:29:59 6.9N 73.0W mb=4.3 EMSC NORTHERN COLOMBIA

P: 21JUL2021 135405 7.0N 73.0W 4.0-5.4 AAAAA Colombia

O: 19JUL2021 17:08:49 7.1N 82.7W mb=4.7 EMSC SOUTH OF PANAMA

P: 19JUL2021 135406 7.0N 82.0W 3.5-5.2 AAAAA Costa Rica

NEIC reported this earthquake of M 4.7 in Panama was felt with intensity II-III in the area(s) of Panama at Boquete and Rio e Jesus.

O: 19JUL2021 18:08:13 11.5S 77.8W ML=4.0 EMSC NEAR COAST OF CENTRAL PERU

P: 16JUL2021 135605 13.0S 77.0W 4.0-5.8 BBAAA Central Peru

O: 19JUL2021 09:50:03 13.5N 91.2W mb=4.1 EMSC OFFSHORE GUATEMALA

P: 21JUL2021 135440 14.0N 92.0W 3.5-5.3 AAAAA Guatemala

O: 19JUL2021 20:56:23 15.4N 96.3W ML=4.4 EMSC OFFSHORE OAXACA, MEXICO

O: 20JUL2021 06:03:11 16.4N 98.3W ML=4.0 EMSC OAXACA, MEXICO

P: 18JUL2021 135453 15.0N 98.0W 3.5-5.8 ABAAA Oaxaca, Mexico

O: 20JUL2021 02:50:13 17.4N 97.4W ML=4.4 EMSC OAXACA, MEXICO

O: 19JUL2021 18:12:21 16.9N 95.1W ML=4.4 EMSC OAXACA, MEXICO

P: 17JUL2021 135437 17.0N 95.0W 3.5-5.1 AAAAA Chiapas, Mexico

O: 19JUL2021 09:17:22 17.4N 101.3W ML=4.4 EMSC OFFSHORE GUERRERO, MEXICO

P: 15JUL2021 135447 18.0N 101.0W 3.5-5.6 BAAAA Michoacan, Mexico

P: 20JUL2021 135447 18.0N 102.0W 3.5-5.5 AAAAA Michoacan, Mexico

O: 19JUL2021 15:33:38 19.3N 74.6W ML=3.6 EMSC CUBA REGION

P: 18JUL2021 135462 20.0N 71.0W 3.0-4.7 AACAA Bahamas/No. Caribbean

O: 19JUL2021 09:44:49 23.3S 64.6W ML=4.2 EMSC SALTA, ARGENTINA

P: 20JUL2021 135618 24.0S 66.0W 4.0-5.8 AAAAA Argentina

O: 20JUL2021 03:05:26 35.4S 71.4W mb=4.3 EMSC MAULE, CHILE

O: 20JUL2021 03:05 35.3S 71.4W mb=4.2 GUC O'Higgins at Lolol, Paredones,

P: 15JUL2021 135632 35.0S 71.0W 4.0-5.5 BAAAA Central Chile

NEIC reported this earthquake of M 4.3 in Maule, Chile was felt with intensity II-III in the area(s) of Maule, Chile at Talca.

GUC reported this earthquake was felt with intensity III in O'Higgins at Lolol, Paredones, Pumanque; Maule at Curico, Linares, San Clemente, Talca and Villa Alegre, Chile.

AFRICA AND EUROPE

O: 19JUL2021 19:21:30 36.8N 5.5E mb=4.3 EMSC NORTHERN ALGERIA

O: 19JUL2021 13:13:04 37.8N 28.0E ML=3.9 EMSC WESTERN TURKEY

P: 14JUL2021 135525 37.0N 29.0E 3.5-5.4 BAAAA Turkey

O: 20JUL2021 05:05:26 38.3N 23.3E mb=4.3 EMSC GREECE

P: 15JUL2021 135498 39.0N 22.0E 3.0-4.6 BAAAA No. Greece

NEIC reported this earthquake of M 4.2 in Greece was felt with intensity II-III in the area(s) of Greece at Tragana.

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

SOUTHWEST PACIFIC

O: 20JUL2021 03:08:11 12.3S 167.1E mb=4.4 EMSC SANTA CRUZ ISLANDS

P: 14JUL2021 135616 16.0S 168.0E 4.0-5.5 CCAAA Vanuatu Islands

O: 19JUL2021 18:04:54 24.6S 179.9E mb=4.4 EMSC SOUTH OF FIJI ISLANDS

P: 20JUL2021 135629 24.0S 179.0E 4.0-5.6 AAAAA Tonga/Fiji

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

OCEAN RIDGES

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

ZEALANDIA AND AUSTRALIA REGION

O: 19JUL2021 08:12:48 31.0S 117.3E ML=3.5 EMSC WESTERN AUSTRALIA

P: 10JUL2021 135380 30.0S 118.0E 2.0-3.4 CAAAA Central Australia

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: 19JUL2021 23:03:37 26.6N 129.9E Mw=5.1 EMSC RYUKYU ISLANDS, JAPAN

P: 18JUL2021 135467 27.0N 130.0E 4.0-5.4 AAAAA Kyushu Japan

NEIC reported this earthquake of M 5.1 in the Ryukyu Islands, Japan was felt with intensity II-III in the area(s) of the Ryukyu Islands, Japan in Okinawa at Chatan.

O: 20JUL2021 04:58:30 28.2N 129.5E ML=4.2 EMSC RYUKYU ISLANDS, JAPAN

P: 18JUL2021 135467 27.0N 130.0E 4.0-5.4 ABAAA Kyushu Japan

O: 19JUL2021 16:00:14 27.3N 140.4E mb=4.2 EMSC BONIN ISLANDS, JAPAN REGION

P: 19JUL2021 135463 28.0N 140.0E 4.0-5.4 AAAAA Bonin Islands

U.S./CANADA*

WESTERN U.S./CANADA

CALIFORNIA

O: 19JUL2021 21:30:43 30.7N 114.5W ML=3.5 EMSC GULF OF CALIFORNIA

P: 16JUL2021 135465 30.0N 114.0W 3.5-5.2 BAAAA Gulf of California

O: 19JUL2021 09:57:40 31.5N 115.6W ML=3.3 EMSC BAJA CALIFORNIA, MEXICO

P: 16JUL2021 135509 31.9N 115.3W 2.5-4.4 BAAAA So. California

O: 20JUL2021 00:28:31 33.0N 115.6W Ml=2.2 EMSC SOUTHERN CALIFORNIA

P: 21JUL2021 135511 32.6N 116.1W 2.5-4.6 AAAAA So. California

O: 19JUL2021 13:10:38 39.2N 117.4W ml=2.2 EMSC NEVADA

P: 14JUL2021 135483 39.9N 118.4W 2.5-4.5 BAAAA California/Nevada area

O: 20JUL2021 04:30:32 40.8N 119.4W ml=2.9 EMSC NEVADA

P: 21JUL2021 135531 40.2N 119.6W 2.5-4.4 AAAAA California/Nevada area

O: 20JUL2021 03:54:16 36.0N 117.3W Ml=2.1 EMSC CENTRAL CALIFORNIA

O: 19JUL2021 13:29:26 35.7N 117.6W Ml=2.1 EMSC SOUTHERN CALIFORNIA

P: 18JUL2021 135519 35.9N 117.7W 2.5-4.8 AAAAA So. California

O: 19JUL2021 23:04:16 38.2N 117.7W ml=2.1 EMSC NEVADA

O: 19JUL2021 19:27:20 38.2N 118.0W ml=2.3 EMSC NEVADA

P: 21JUL2021 135481 38.4N 118.7W 2.5-4.9 AAAAA California/Nevada area

O: 19JUL2021 10:26:44 38.5N 119.5W ml=2.6 EMSC CENTRAL CALIFORNIA

O: 19JUL2021 19:58:10 38.5N 119.5W Ml=3.0 EMSC CENTRAL CALIFORNIA

O: 19JUL2021 15:30:04 38.6N 119.5W ml=2.2 EMSC CENTRAL CALIFORNIA

O: 19JUL2021 08:33:00 38.5N 119.6W Md=2.2 EMSC NORTHERN CALIFORNIA

P: 21JUL2021 135480 38.3N 119.3W 2.5-4.6 AAAAA California/Nevada area

ALASKA

O: 19JUL2021 16:28:56 52.6N 169.4W mb=3.4 EMSC FOX ISLANDS, ALEUTIAN ISLANDS

P: 15JUL2021 135577 51.9N 169.2W 3.5-5.0 BAAAA Fox Islands, Aleutians

O: 19JUL2021 23:52:57 56.1N 148.4W ML=3.2 EMSC GULF OF ALASKA

P: 15JUL2021 135596 55.0N 149.0W 3.0-4.6 BBAAA Gulf of Alaska

O: 20JUL2021 03:38:05 58.0N 151.9W ML=3.3 EMSC KODIAK ISLAND REGION, ALASKA

P: 20JUL2021 135590 60.8N 151.7W 3.2-5.3 ACAAA Central Alaska

O: 20JUL2021 06:37:28 59.9N 153.5W ml=3.1 EMSC SOUTHERN ALASKA

P: 18JUL2021 135590 60.3N 153.0W 3.2-5.2 AAAAA Central Alaska

O: 19JUL2021 10:52:19 60.2N 151.8W Mw=4.3 EMSC KENAI PENINSULA, ALASKA

P: 20JUL2021 135590 60.8N 151.7W 3.2-5.3 AAAAA Central Alaska

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

O: 19JUL2021 10:41:02 46.9N 129.1W MB=3.1 ECAN Tofino, BC

P: 19JUL2021 135564 48.9N 129.3W 2.8-5.1 ABAAA Vancouver Island area

ROCKY MOUNTAINS REGION

O: 20JUL2021 02:11:06 31.6N 104.6W ML=2.8 EMSC WESTERN TEXAS

O: 19JUL2021 11:23:25 32.1N 103.7W ML=3.9 EMSC NEW MEXICO

O: 19JUL2021 11:23:25 32.1N 103.7W ML=4.0 ANSS NEW MEXICO

P: 18JUL2021 135508 32.5N 104.6W 2.0-4.0 AAAAA SW U.S.A

O: 19JUL2021 17:05:19 44.5N 110.4W Ml=2.1 EMSC YELLOWSTONE NAT. PARK, WYOMING

P: 19JUL2021 135567 44.2N 110.3W 2.0-4.3 AAAAA Yellowstone/Wyoming

O: 19JUL2021 11:42:53 48.1N 116.5W Ml=2.3 EMSC NORTHERN IDAHO

P: 13JUL2021 135544 47.7N 117.4W 2.0-3.9 CAAAA Montana/Idaho

EASTERN U.S./CANADA

O: 19JUL2021 19:21:16 35.4N 97.9W ML=2.3 EMSC OKLAHOMA

O: 19JUL2021 13:01:52 35.5N 97.8W ML=2.2 EMSC OKLAHOMA

O: 19JUL2021 08:13:22 36.5N 99.0W ML=2.0 EMSC OKLAHOMA

P: 18JUL2021 135524 37.0N 98.0W 2.0-3.9 AAAAA Southern Plains

HAWAII

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

MODERATE QUAKE SHAKES SOUTHERN IRAN; UNUSUAL QUAKES IN SEVERAL AREAS

EARTHQUAKE SUMMARY FOR JULY 18, 2021

The strongest earthquake in the world today was an M 5.4 in Southern Iran.

NEIC reported this earthquake of M 5.4 in Southern Iran was felt with intensity II-III in the area(s) of Southern Iran with IV at Kazerun, Fars and Jabriya and in Berazan, Shiraz, Salmiya, el-Ahmadi and el-Wahah, Kuwait. It was followed by a series of moderate aftershocks. In the past year similar events hit the area on April 18, 20221 (M 5.8) and February 17, 2021 (M 5.4). Forecast 135473 had expected today’s event to the southeast was likely around July 17.

O: 18JUL2021 14:54:29 29.7N 51.1E mb=4.3 EMSC SOUTHERN IRAN

O: 18JUL2021 15:08:42 29.7N 51.1E mb=4.4 EMSC SOUTHERN IRAN

O: 18JUL2021 15:27:00 29.7N 51.1E ML=4.0 EMSC SOUTHERN IRAN

O: 18JUL2021 17:32:33 29.7N 51.1E mb=4.4 EMSC SOUTHERN IRAN

O: 18JUL2021 14:34:18 29.6N 51.2E Mw=5.4 EMSC SOUTHERN IRAN

P: 17JUL2021 135473 28.0N 52.0E 3.5-4.9 ABAAA So. Iran/Persian Gulf

A strong winter storm hit the area near Picton, New Zealand today. Thanks to a reader (Pam) we have good data on this storm. An earthquake of M 4.2 in the Cook Strait accompanied the storm as noted in this summary:

"A strong Winter Storm hit the area near Picton, New Zealand over the weekend. It was accompanied by an M 4.2 near Picton which was probably triggered by stresses from this storm." (July 18-19, 2021)

This is the strongest earthquake in the Cook Strait area since an M 4.7 on March 12, 2021 - the strongest in the area in more than a year. NEIC reported this earthquake of M 4.2 in Cook Strait, New Zealand was felt with intensity II-III in the area(s) of Cook Strait, New Zealand in New Plymouth, Taranaki, New Zealand. Forecast 135638 had expected this activity within about 50 km was likely around July 20.

O: 18JUL2021 18:11:53 40.7S 173.8E mb=4.2 EMSC COOK STRAIT, NEW ZEALAND

P: 20JUL2021 135638 40.0S 174.0E 3.0-4.5 AAAAA North Island, N.Z.

An unusual earthquake of M 4.8 was also recorded north of New Zealand an west of the Kermadec Islands. It was not reported felt in this remote area. Only one other quake of M>=4.8 has occurred within about 300 km of this epicenter in the past 30 years - an M 4.8 on December 6, 2002. Unusual earthquakes northwest of New Zealand have occasionally occurred days before strong quakes, usually along the coast of South America. But the rarity of quakes in this region does not permit any such conclusions at this time. Still, it has been nearly two months since the last major earthquake in the world and a full moon will be arriving in the next week, so global activity is likely to be enhanced in coming days.

O: 19JUL2021 00:00:23 29.6S 174.7E ML=4.8 EMSC NORTH OF NEW ZEALAND

P: 16JUL2021 135636 33.0S 178.0E 4.0-5.6 BCCAA So. Kermadec Islands

GEONET also reported an earthquake in Te Anau, South Island was felt with weak intensity in the area southwest of Te Anau, South Island. 140 reports of felt intensity came from the area east and north of the epicenter. More than 140 people reported feeling this earthquake with 106 reporting weak shaking and 29 light intensity; 3 with moderate intensity and none with strong, 0 with severe and 0 with extreme shaking.

O: 18JUL2021 08:36:26 45.0S 167.5E ML=3.9 EMSC SOUTH ISLAND OF NEW ZEALAND

O: 18JUL2021 08:36:26 45.0S 167.5E MS=4.4 GEONET Felt with weak intensity

P: 20JUL2021 135641 44.0S 168.0E 3.0-4.9 AAAAA So. Island, N.Z.

Unusual earthquakes also occurred today in the region off southern Cuba and

in the Pitcairn Island area of the South Pacific Ocean. This unusual activity further raises the specter of a major upcoming earthquake. The event in Cuba had been expected to the east in forecast 135462 around July 19. NEIC reported this earthquake of M 4.2 in Cuba was felt with intensity II-III in the area(s) of Cuba at Guantanamo, and Santiago de Cuba.

O: 19JUL2021 01:33:27 19.8N 75.5W mb=4.2 EMSC CUBA REGION

P: 18JUL2021 135462 20.0N 71.0W 3.0-4.7 AACAA Bahamas/No. Caribbean

An M 5.1 also occurred in the south Pacific in the Pitcairn Islands region It was not reported felt in this remote area. The only earthquake in the Pitcairn area in the past 30 years of M>=5.1 was an M 5.6 on September 23, 1995. Forecast 135624 had expected today's event within about 50 km was likely around July 14.

O: 18JUL2021 15:48:09 25.1S 129.6W mb=5.1 EMSC PITCAIRN ISLANDS REGION

P: 14JUL2021 135624 25.0S 130.0W 3.0-5.6 BAAAA So. Pacific Ocean

The strongest earthquake in the U.S/Canada or vicinity today was an M 4.1 in the northern Gulf of California. It was accompanied by at least nine quakes of M>=3.3. The mainshock occurred within about an hour of local solar noon and may have been enhanced by strong tidal stresses which maximize near this hour. This continues a series of events that began on July 9 and is the strongest in the current activity. This is a remote area and while some of these may have been lightly felt, this was not reported. Forecast 135465 had expected today's event within about 25 km was likely around July 18.

O: 18JUL2021 09:45:37 29.9N 114.1W ML=3.8 EMSC GULF OF CALIFORNIA

O: 18JUL2021 18:40:50 29.9N 113.7W ML=4.1 EMSC GULF OF CALIFORNIA

O: 18JUL2021 09:39:14 30.0N 114.1W ML=3.5 EMSC GULF OF CALIFORNIA

O: 18JUL2021 20:18:46 30.0N 114.3W ML=3.6 EMSC GULF OF CALIFORNIA

O: 18JUL2021 20:50:21 30.0N 114.1W ML=3.3 EMSC GULF OF CALIFORNIA

O: 18JUL2021 21:02:33 30.1N 114.2W ML=3.6 EMSC GULF OF CALIFORNIA

O: 18JUL2021 18:26:01 30.2N 114.3W ML=3.6 EMSC GULF OF CALIFORNIA

O: 18JUL2021 18:35:08 30.2N 114.2W ML=3.5 EMSC GULF OF CALIFORNIA

O: 18JUL2021 21:46:18 29.8N 114.5W ML=3.7 EMSC BAJA CALIFORNIA, MEXICO

P: 16JUL2021 135465 30.0N 114.0W 3.5-5.2 AAAAA Gulf of California

OTHER GLOBAL EARTHQUAKE ACTIVITY

ASIA

O: 18JUL2021 14:54:29 29.7N 51.1E mb=4.3 EMSC SOUTHERN IRAN

O: 18JUL2021 15:08:42 29.7N 51.1E mb=4.4 EMSC SOUTHERN IRAN

O: 18JUL2021 15:27:00 29.7N 51.1E ML=4.0 EMSC SOUTHERN IRAN

O: 18JUL2021 17:32:33 29.7N 51.1E mb=4.4 EMSC SOUTHERN IRAN

O: 18JUL2021 14:34:18 29.6N 51.2E Mw=5.4 EMSC SOUTHERN IRAN

P: 17JUL2021 135473 28.0N 52.0E 3.5-4.9 ABAAA So. Iran/Persian Gulf

O: 18JUL2021 07:13:39 23.4N 70.4E ML=3.9 EMSC GUJARAT, INDIA

P: 17JUL2021 135470 29.0N 68.0E 3.5-4.9 ACBAA Pakistan

O: 18JUL2021 11:25:42 24.0N 121.7E ML=4.2 EMSC TAIWAN

O: 18JUL2021 11:25:42 24.0N 121.7E ML=4.2 TAI Hualien, Taiwan

P: 17JUL2021 135474 23.0N 122.0E 4.0-5.4 AAAAA Taiwan

P: 20JUL2021 135471 25.0N 122.0E 4.0-5.5 AAAAA Ryukyu Islands

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

O: 18JUL2021 21:31:19 27.9N 51.9E mb=4.2 EMSC PERSIAN GULF

P: 17JUL2021 135473 28.0N 52.0E 3.5-4.9 AAAAA So. Iran/Persian Gulf

O: 18JUL2021 11:26:01 55.9N 113.5E mb=3.9 EMSC BURYATIYA, RUSSIA

P: 19JUL2021 135584 56.0N 110.0E 3.0-4.5 AABAA So. Siberia

INDONESIA AND PHILIPPINES

O: 19JUL2021 00:55:44 0.1N 123.2E Mw=5.2 EMSC MINAHASA, SULAWESI, INDONESIA

O: 18JUL2021 21:54:46 0.5N 120.6E ML=4.0 EMSC MINAHASA, SULAWESI, INDONESIA

O: 18JUL2021 10:40:01 0.0N 123.8E mb=4.9 EMSC MINAHASA, SULAWESI, INDONESIA

P: 16JUL2021 135409 0.0N 123.0E 4.0-5.5 AAAAA Mindanao, Philippines

O: 19JUL2021 02:38:54 0.5N 126.6E mb=4.6 EMSC MOLUCCA SEA

P: 17JUL2021 135415 1.0S 127.0E 4.0-5.4 ABAAA Ceram area

O: 19JUL2021 05:06:17 1.7N 127.1E ML=4.3 EMSC HALMAHERA, INDONESIA

P: 21JUL2021 135408 3.0N 128.0E 4.0-5.4 ABAAA Halmahera

O: 18JUL2021 16:21:09 2.5N 122.1E ML=4.3 EMSC CELEBES SEA

P: 16JUL2021 135409 0.0N 123.0E 4.0-5.5 ACAAA Mindanao, Philippines

O: 18JUL2021 09:35:26 3.6S 145.9E mb=4.8 EMSC NEAR N COAST OF NEW GUINEA, PN

P: 19JUL2021 135420 3.0S 146.0E 4.0-5.4 AAAAA New Ireland

O: 18JUL2021 12:09:42 6.2N 125.8E ML=4.0 EMSC MINDANAO, PHILIPPINES

P: 19JUL2021 135404 7.0N 126.0E 4.0-5.4 AAAAA Central Philippines

O: 19JUL2021 04:43:00 6.3S 147.7E mb=4.6 EMSC EASTERN NEW GUINEA REG., P.N.G

P: 16JUL2021 135420 6.0S 149.0E 4.0-5.4 BABAA New Ireland

O: 18JUL2021 17:31:11 6.8N 126.2E ML=4.4 EMSC MINDANAO, PHILIPPINES

P: 19JUL2021 135404 7.0N 126.0E 4.0-5.4 AAAAA Central Philippines

O: 18JUL2021 23:49:12 7.8S 107.3E ML=4.1 EMSC JAVA, INDONESIA

P: 20JUL2021 135426 9.0S 107.0E 4.0-5.4 AAAAA So. of Java

O: 19JUL2021 03:35:28 8.7S 119.0E ML=4.2 EMSC SUMBAWA REGION, INDONESIA

P: 18JUL2021 135430 9.0S 118.0E 4.0-5.5 AAAAA Sumbawa Island area

CENTRAL AND SOUTH AMERICA

O: 18JUL2021 08:18:05 15.5N 95.1W ML=4.0 EMSC OFFSHORE OAXACA, MEXICO

P: 20JUL2021 135437 15.0N 94.0W 3.5-5.1 AAAAA Chiapas, Mexico

O: 19JUL2021 06:17:50 17.1S 71.0W mb=4.7 EMSC NEAR COAST OF SOUTHERN PERU

P: 21JUL2021 135610 18.0S 72.0W 4.0-5.9 AAAAA So. Peru/Bolivia

O: 18JUL2021 17:47:16 17.2N 100.3W ML=4.0 EMSC GUERRERO, MEXICO

P: 19JUL2021 135454 17.0N 100.0W 3.5-5.3 AAAAA Oaxaca, Mexico

O: 18JUL2021 21:59:45 19.0S 66.9W mb=4.5 EMSC ORURO, BOLIVIA

P: 20JUL2021 135617 21.0S 67.0W 4.0-5.4 ABAAA Argentina

O: 18JUL2021 21:32:30 19.0S 69.6W mb=4.5 EMSC TARAPACA, CHILE

O: 18JUL2021 21:32 19.0S 69.6W mb=4.2 GUC Tarapaca at Camina, II in Huar

P: 21JUL2021 135628 20.0S 70.0W 4.0-5.5 BAAAA So. Peru/Bolivia

GUC reported this earthquake was felt with intensity IV in Tarapaca at Camina, II in Huara and Iquique and III in Arica.

NEIC reported this earthquake of M 4.5 in northern Chile was felt with intensity II-III in the area(s) of northern Chile in Tarapaca at Iquique and Arica.

O: 18JUL2021 21:26:10 18.0N 67.1W Md=3.1 EMSC PUERTO RICO REGION

O: 18JUL2021 23:43:18 18.0N 67.1W Md=3.0 EMSC PUERTO RICO

O: 18JUL2021 23:11:45 19.2N 65.0W Md=3.6 EMSC VIRGIN ISLANDS REGION

P: 18JUL2021 135443 19.0N 64.0W 3.0-4.9 AAAAA Leeward Islands

NEIC reported this earthquake of M 3.6 in the Virgin Islands was felt with intensity II-III in the area(s) of the Virgin Islands at Saint John.

O: 19JUL2021 01:33:27 19.8N 75.5W mb=4.2 EMSC CUBA REGION

P: 18JUL2021 135462 20.0N 71.0W 3.0-4.7 AACAA Bahamas/No. Caribbean

O: 18JUL2021 13:46:38 20.4S 68.9W mb=4.3 EMSC TARAPACA, CHILE

P: 21JUL2021 135628 20.0S 70.0W 4.0-5.5 BAAAA So. Peru/Bolivia

O: 18JUL2021 08:08:56 27.9N 112.0W ML=4.1 EMSC GULF OF CALIFORNIA

O: 18JUL2021 09:32:23 27.9N 112.0W ML=3.6 EMSC GULF OF CALIFORNIA

P: 15JUL2021 135465 28.0N 112.0W 3.5-5.2 BAAAA Gulf of California

AFRICA AND EUROPE

O: 18JUL2021 22:09:22 34.7N 39.8E mb=4.4 EMSC SYRIA

P: 17JUL2021 135526 39.0N 41.0E 3.5-5.6 ACAAA Turkey

O: 19JUL2021 02:33:47 34.8N 14.9W mb=4.1 EMSC MADEIRA ISLANDS, PORTUGAL REGI

P: 10JUL2021 135234 37.0N 11.0W 3.5-5.0 CCCAA Morocco/Spain

O: 19JUL2021 01:54:57 71.2N 8.6W ML=3.3 EMSC JAN MAYEN ISLAND REGION

P: 16JUL2021 135602 71.0N 8.0W 3.5-5.0 BAAAA Jan Mayen Isl. area

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

SOUTHWEST PACIFIC

O: 19JUL2021 06:35:24 23.7S 179.6W mb=4.2 EMSC SOUTH OF FIJI ISLANDS

O: 18JUL2021 23:59:17 23.6S 178.7W mb=4.6 EMSC SOUTH OF FIJI ISLANDS

P: 14JUL2021 135629 22.0S 180.0W 4.0-5.4 BBAAA Tonga Islands

OCEAN RIDGES

O: 18JUL2021 12:05:42 2.7S 104.1W mb=4.6 EMSC CENTRAL EAST PACIFIC RISE

P: 11JUL2021 135152 4.0S 104.0W 4.0-5.4 CBAAA No. East Pacific Rise

P: 15JUL2021 135421 5.0S 105.0W 4.0-5.5 BCAAA No. East Pacific Rise

O: 18JUL2021 15:48:09 25.1S 129.6W mb=5.1 EMSC PITCAIRN ISLANDS REGION

P: 14JUL2021 135624 25.0S 130.0W 3.0-5.6 BAAAA So. Pacific Ocean

ZEALANDIA AND AUSTRALIA REGION

O: 19JUL2021 00:00:23 29.6S 174.7E ML=4.8 EMSC NORTH OF NEW ZEALAND

P: 16JUL2021 135636 33.0S 178.0E 4.0-5.6 BCCAA So. Kermadec Islands

O: 18JUL2021 09:36:43 32.0S 179.5E ML=4.2 EMSC SOUTH OF KERMADEC ISLANDS

P: 16JUL2021 135636 33.0S 178.0E 4.0-5.6 AAAAA So. Kermadec Islands

O: 18JUL2021 18:11:53 40.7S 173.8E mb=4.2 EMSC COOK STRAIT, NEW ZEALAND

P: 20JUL2021 135638 40.0S 174.0E 3.0-4.5 AAAAA North Island, N.Z.

O: 18JUL2021 08:36:26 45.0S 167.5E ML=3.9 EMSC SOUTH ISLAND OF NEW ZEALAND

O: 18JUL2021 08:36:26 45.0S 167.5E MS=4.4 GEONET Felt with weak intensity

P: 20JUL2021 135641 44.0S 168.0E 3.0-4.9 AAAAA So. Island, N.Z.

GEONET reported this earthquake was felt with weak intensity in the area southwest of Te Anau, South Island. 140 reports of felt intensity came from the area east and north of the epicenter. More than 140 people reported feeling this earthquake with 106 reporting weak shaking and 29 light intensity; 3 with moderate intensity and none with strong, 0 with severe and 0 with extreme shaking.

JAPAN AND KURIL ISLANDS

O: 18JUL2021 10:11:07 37.0N 139.1E mb=4.5 EMSC EASTERN HONSHU, JAPAN

O: 18JUL2021 09:50:08 37.0N 139.2E mb=4.6 EMSC EASTERN HONSHU, JAPAN

P: 16JUL2021 135499 37.0N 138.0E 3.5-5.1 AAAAA No. Honshu, Japan

O: 18JUL2021 18:29:39 44.9N 146.2E mb=4.1 EMSC KURIL ISLANDS

P: 20JUL2021 135536 44.0N 147.0E 3.5-5.6 AAAAA Hokkaido, Japan