- Earthquake summary

MODERATE QUAKE SHAKES SOUTHERN CALIFORNIA

EARTHQUAKE SUMMARY FOR APRIL 3, 2020

A moderate earthquake of M 4.9-5.0 shook regions southeast of Los Angeles, California today. It was reported by NEIC to have been felt with intensity IV throughout a large portion of Southern California including at Mountain Center, Anza, Palm Desert, Ranchita, Warner Springs, La Quinta, Palm Springs, Aguanga, Indian Wells, Rancho Mirage. More than 20,000 people reported to NEIC that they had felt this event which occurred in the local evening. It was reported felt as far as 1000 km from the epicenter. This is the strongest earthquake within about 100 km of this epicenter since an M 5.2 on June 10, 2016 and prior to that an M 5.5 on August 26, 2012. A strong M 7.2 earthquake rocked the area south of this ten years ago on April 4, 2010 on Easter Sunday (see history section below). The earthquake occurred in the desert regions southeast of Los Angeles and no major damage was reported from this epicentral region. The timing of today's event appears to have been promoted by several factors including plate motions induced by a storm off the northeast U.S., the strongest geomagnetic storm in nearly half a year and its relation to the Kuril Islands M 7.7 of March 25. In the previous summary it had been noted:

"Seismicity in California, Oregon and Washington was at low levels today. Some regional triggering in southern California is likely following the M 6.5 in Idaho. The full moon on April 8 may reduce the likelihood of a moderate quake from April 6-10 but seismicity could be enhanced in the next three days in the area due to an unusual reverse air flow and storm pattern in the Northeast U.S over the past three days. Harmonic resonance is likely at this time in the North American Plate, partly due to this weather pattern." (April 2-3, 2020)

The weather pattern referred to is a nor-easter which this summary has repeatedly tied to significant seismic activity in the western U.S. Winds with speeds up to 70 m/h were recorded as the storm battered areas from New Jersey to Nova Scotia and Maine. Instead of the typical winds from the west, a low gets situated off the northeast coast and due to a combination of factors does not immediately move to the northwest. Winds shift to the north and east (hence nor-easter) and can be substantial. These winds push North America to the west affecting plate motions differently than the prevailing westerlies. In addition to strong precipitation events (the current storm dropped up to 5 inches of rain in three days) this can lead to promotion of seismicity in the west.

The geomagnetic storm was also described in previous issues as it related to the M 6.5 in Idaho as:

"Today's earthquake in Idaho coincided with the strongest disturbance in the geomagnetic field since late October, 2019 as noted in this summary:

"The geomagnetic field saw disturbed conditions today. The AP level was 15. High latitude geomagnetic field saw active conditions with AP at 25. This is the strongest disturbance in the geomagnetic field since AP reached 26 on October 26, 2019. Moderate disturbance in the geomagnetic field such as today's can help promote enhanced seismicity especially at high latitudes." (March 31, April 1, 2020)

This summary has long been an advocate of seismic promotion from both nor-easter type storms and geomagnetic triggering.

Another factor which probably promoted the event in Southern California at this time was the series of events to the north in Idaho (M 6.5 March 31) and the Salt Lake City (M 5.6, March 18); and the Kuril Islands M 7.7 (M 7.7 March 25). In particular today's event is located near the 6th node from the Kurils (60 degrees). This summary had expected seismic promotion in southern California at this time from the Kurils in previous issues as:

"Moderate far-field triggering is likely following the earthquake in the Kuril Islands. ... at 60 degrees Central Indonesia and southern California. These areas may see enhanced seismicity in coming days." (March 24-25, 2020)

A series of earthquakes in Central Indonesia at the 6th and 7th node has been followed since then in this summary. This appears to be the latest in this nodal triggering from the major Kuril Islands event.

Following is a listing of aftershocks of M>=3.0 today in the region of Southern

California. A more complete listing can be found in the Regional California section below. Forecast 122841 had expected today's activity within about 50 km of these epicenter was likely at the end of March or in early April. This activity is at 104 degrees from the M 6.8 in Eastern Turkey of January 24 and near the sixth node (60 degrees) from the Kuril Islands M 7.7 and may have been promoted by energy from those events.

O: 04APR2020 01:53:18 33.5N 116.5W Mw=4.9 ANSS SOUTHERN CALIFORNIA

O: 04APR2020 01:53:20 33.2N 116.3W Mw=4.9 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 01:55:35 33.5N 116.5W ML=3.0 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:59:22 33.5N 116.5W ML=3.0 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 05:12:34 33.5N 116.5W ML=3.5 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 01:54:22 33.5N 116.5W ML=3.8 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:04:59 33.5N 116.5W ML=3.8 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 04:07:21 33.5N 116.5W Mw=3.6 EMSC SOUTHERN CALIFORNIA

P: 31MAR2020 122841 33.7N 116.1W 2.5-4.3 BAAAA So. California

The strongest earthquakes in the world today continued in the activation of the South Sandwich Islands and in the antipodal area of the Komandorsky Islands of

Russia. These included an M 5.4 in the Komandorsky and a second in the South Sandwich Islands along with an M 5.1. This activity was not reported felt in these remote areas. The M 5.4 in the South Sandwich Islands is the largest since the activation began following the M 7.7 near the antipode in the Kuril Islands of March 25. The last event of larger magnitude in the South Sandwich Islands was an M 6.1 on January 20, 2020. Forecast 123202 had expected today's South Sandwich activity in early April.

O: 4APR2020 01:52:49 55.9S 27.8W mb=5.1 EMSC SOUTH SANDWICH ISLANDS REGION

P: 7APR2020 123202 55.0S 28.0W 4.0-6.1 BAAAA So. Sandwich Islands

O: 3APR2020 22:50:46 58.7S 25.2W Mw=5.4 EMSC SOUTH SANDWICH ISLANDS REGION

P: 4APR2020 123202 60.0S 26.0W 4.0-6.0 ABAAA So. Sandwich Islands

The M 5.4 in the Komandorsky Islands is the strongest within about 200 km in that region since an M 5.7 on June 27, 2019 following events of M 6.3 and 6.4 on

June 25 and 26. These occurred about 200 km northwest of today's epicenter and were aftershocks of an M 7.3 on December 20, 2018. Forecast 123137 had expected today's event within about 25 km of this epicenter was likely in early April.

O: 4APR2020 06:18:27 54.9N 166.2E Mw=5.4 EMSC KOMANDORSKIYE OSTROVA REGION

P: 7APR2020 123137 55.0N 166.0E 4.0-5.8 BAAAA Komandorsky Isl

An unusual earthquake off the coast of Syria of M 4.6 also occurred today. NEIC reported maximum shaking in Syria at Tartus, Banias, Misiaf, Hama, and Jubayl, Juniyah, and Babda, Lebanon with II-III in This is the strongest event within about 200 km in Syria since an M 5.0 on July 29, 2015. Forecast 123048 had expected today's event within about 100 km was likely around April 4.

O: 4APR2020 03:41:53 35.7N 35.6E ML=2.6 EMSC NEAR THE COAST OF SYRIA

O: 3APR2020 18:15:42 35.8N 35.6E ML=4.8 EMSC NEAR THE COAST OF SYRIA

P: 4APR2020 123048 35.0N 35.0E 3.0-4.5 AAAAA Aegean Sea

Aftershocks also continued to be felt in southern Idaho today. The strongest of today events were two of M 4.3 felt with intensity II-III in Idaho at Stanley, Lowman, Garden Valley, Cascade, Idaho City, Horseshoe Bend, Donnelly, Garden City, Boise. Following is a listing of today's events of M>=3 in the area of Southern Idaho. A more complete listing is found in the Regional seismicity section below. Forecast 123110 had expected today's events around April 5.

O: 03APR2020 16:10:23 44.3N 115.1W Ml=3.8 EMSC SOUTHERN IDAHO

O: 03APR2020 21:57:24 44.3N 115.2W ML=3.0 EMSC SOUTHERN IDAHO

O: 03APR2020 20:21:47 44.3N 115.2W Ml=4.3 EMSC SOUTHERN IDAHO

O: 03APR2020 15:44:29 44.4N 115.2W ML=3.0 EMSC SOUTHERN IDAHO

O: 04APR2020 04:36:08 44.4N 115.2W ML=3.1 EMSC SOUTHERN IDAHO

O: 03APR2020 12:48:15 44.4N 115.2W ML=3.2 EMSC SOUTHERN IDAHO

O: 03APR2020 07:54:48 44.4N 115.2W ML=3.5 EMSC SOUTHERN IDAHO

O: 03APR2020 12:15:35 44.4N 115.2W ML=3.5 EMSC SOUTHERN IDAHO

O: 03APR2020 08:32:31 44.4N 115.2W ML=3.6 EMSC SOUTHERN IDAHO

O: 03APR2020 19:30:19 44.4N 115.2W Ml=3.0 EMSC SOUTHERN IDAHO

O: 03APR2020 20:06:24 44.4N 115.2W Ml=4.3 EMSC SOUTHERN IDAHO

O: 4APR2020 01:46:10 44.5N 115.2W ML=3.0 EMSC SOUTHERN IDAHO

P: 5APR2020 123110 44.4N 115.1W 2.0-4.1 AAAAA 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: 3APR2020 16:06:37 27.8N 57.7E ML=4.0 EMSC SOUTHERN IRAN

P: 6APR2020 123044 27.0N 56.0E 3.5-5.0 BAAAA So. Iran/Persian Gulf

O: 4APR2020 00:45:53 32.7N 85.2E mb=4.4 EMSC WESTERN XIZANG

O: 3APR2020 22:54:41 32.7N 85.4E mb=4.8 EMSC WESTERN XIZANG

P: 8APR2020 123097 30.0N 84.0E 3.8-5.4 BCBAA Xizang

O: 4APR2020 00:44:32 35.5N 74.8E ML=4.0 EMSC NORTHWESTERN KASHMIR

P: 5APR2020 123075 35.0N 75.0E 3.8-5.3 AAAAA Northern India

O: 4APR2020 06:18:27 54.9N 166.2E Mw=5.4 EMSC KOMANDORSKIYE OSTROVA REGION

P: 7APR2020 123137 55.0N 166.0E 4.0-5.8 BAAAA Komandorsky Isl

INDONESIA AND PHILIPPINES

O: 3APR2020 12:50:24 1.6N 126.5E mb=4.6 EMSC MOLUCCA SEA

P: 6APR2020 122985 3.0N 126.0E 4.0-5.6 BBAAA Mindanao, Philippines

O: 3APR2020 22:14:17 1.9N 128.4E mb=4.4 EMSC HALMAHERA, INDONESIA

P: 5APR2020 122984 3.0N 129.0E 4.0-5.5 ABAAA Halmahera

P: 27MAR2020 122742 1.0N 128.0E 4.0-5.3 CAAAA Halmahera

O: 3APR2020 10:32:45 2.9S 119.4E ML=4.1 EMSC SULAWESI, INDONESIA

P: 31MAR2020 122764 1.0S 120.0E 4.0-5.3 BBAAA Sulawesi area

O: 3APR2020 18:38:36 10.1S 115.5E ML=4.1 EMSC SOUTH OF BALI, INDONESIA

P: 5APR2020 123170 11.0S 116.0E 4.0-5.4 AAAAA So. of Indonesia

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

CENTRAL AND SOUTH AMERICA

O: 3APR2020 09:16:14 4.0N 82.8W mb=4.7 EMSC SOUTH OF PANAMA

P: 30MAR2020 122741 4.0N 83.0W 4.0-5.3 BAAAA Ecuador

O: 3APR2020 14:28:00 8.7S 76.3W ML=4.1 EMSC CENTRAL PERU

P: 5APR2020 122989 8.0S 74.0W 3.5-5.1 AABAA Brazil

O: 4APR2020 03:26:30 10.3N 86.3W ML=4.2 EMSC OFF COAST OF COSTA RICA

P: 3APR2020 123025 10.0N 86.0W 3.5-5.4 AAAAA Nicaragua

O: 3APR2020 20:20:02 13.0N 89.1W ML=4.2 EMSC OFFSHORE EL SALVADOR

P: 5APR2020 123016 14.0N 90.0W 3.5-5.4 AAAAA Guatemala

P: 31MAR2020 122772 13.0N 89.0W 3.5-5.0 BAAAA Coast of Central America

O: 4APR2020 06:28:18 14.5N 93.0W ML=4.1 EMSC OFFSHORE CHIAPAS, MEXICO

P: 2APR2020 123012 14.0N 93.0W 3.5-5.3 AAAAA Chiapas, Mexico

O: 3APR2020 23:21:20 15.0N 94.4W ML=4.1 EMSC OFF COAST OF CHIAPAS, MEXICO

P: 3APR2020 123013 16.0N 95.0W 3.5-5.1 AAAAA Chiapas, Mexico

O: 3APR2020 18:44:12 16.9N 99.5W ML=4.2 EMSC GUERRERO, MEXICO

P: 4APR2020 123030 16.0N 100.0W 3.5-5.5 AAAAA Oaxaca, Mexico

O: 3APR2020 20:50:42 17.3N 100.7W ML=4.0 EMSC GUERRERO, MEXICO

P: 31MAR2020 122784 17.0N 100.0W 3.5-5.0 BAAAA Oaxaca, Mexico

O: 3APR2020 16:21:29 18.9N 68.2W ML=3.0 EMSC DOMINICAN REPUBLIC REGION

P: 4APR2020 123032 19.0N 68.0W 3.4-5.1 AAAAA Puerto Rico

O: 3APR2020 11:52:55 24.0S 67.0W mb=4.0 EMSC SALTA, ARGENTINA

P: 31MAR2020 122951 24.0S 69.0W 4.0-5.3 BABAA Coast No. Chile

O: 3APR2020 08:47:59 29.0S 71.7W Mw=4.8 EMSC OFFSHORE ATACAMA, CHILE

O: 3APR2020 20:17:18 30.5S 72.0W Mw=4.6 EMSC OFFSHORE COQUIMBO, CHILE

P: 4APR2020 123191 30.0S 72.0W 4.0-5.7 AAAAA Coast Central Chile

NEIC reported this earthquake of M 4.9 in Central Chile was felt with intensity II-III in the area(s) ofCentral Chile at Vina del Mar, Valparaiso.

O: 4APR2020 04:54:43 31.3S 68.9W Mw=4.9 EMSC SAN JUAN, ARGENTINA

P: 5APR2020 123189 31.0S 70.0W 4.0-5.6 AAAAA 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.

A similar M 4.8 was felt earlier in the day off northern Chile. It was felt with intensity III in Catamarca, Argentina.

O: 03APR2020 18:52:09 16.8N 94.0W ML=4.1 EMSC CHIAPAS, MEXICO

O: 04APR2020 02:48:12 17.1N 94.9W ML=4.1 EMSC OAXACA, MEXICO

O: 3APR2020 23:21:20 15.0N 94.4W ML=4.1 EMSC OFF COAST OF CHIAPAS, MEXICO

P: 3APR2020 123013 16.0N 95.0W 3.5-5.1 AAAAA Chiapas, Mexico

O: 04APR2020 01:08:12 18.0N 66.8W ML=3.0 EMSC PUERTO RICO REGION

O: 03APR2020 12:39:37 18.0N 66.8W Md=3.1 EMSC PUERTO RICO

O: 04APR2020 02:40:06 18.0N 66.8W Md=3.2 EMSC PUERTO RICO

O: 04APR2020 00:27:43 18.1N 68.6W ML=3.3 EMSC MONA PASSAGE, DOMINICAN REPUBLIC

O: 3APR2020 16:21:29 18.9N 68.2W ML=3.0 EMSC DOMINICAN REPUBLIC REGION

P: 4APR2020 123032 19.0N 68.0W 3.4-5.1 AAAAA Puerto Rico

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

AFRICA AND EUROPE

O: 3APR2020 09:42:46 38.5N 44.4E ML=4.2 EMSC TURKEY-IRAN BORDER REGION

P: 4APR2020 123094 38.0N 43.0E 3.5-5.1 AAAAA Turkey

O: 3APR2020 14:18:57 39.1N 17.2E ML=4.0 EMSC SOUTHERN ITALY

P: 4APR2020 123105 43.0N 17.0E 3.0-5.0 ACAAA Italy

P: 9APR2020 123067 38.0N 14.0E 3.0-5.2 CBCAA Mediterranean/Sicily

O: 4APR2020 03:41:53 35.7N 35.6E ML=2.6 EMSC NEAR THE COAST OF SYRIA

O: 3APR2020 18:15:42 35.8N 35.6E ML=4.8 EMSC NEAR THE COAST OF SYRIA

P: 4APR2020 123048 35.0N 35.0E 3.0-4.5 AAAAA Aegean Sea

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

SOUTHWEST PACIFIC

O: 3APR2020 13:09:24 19.7S 172.9W mb=4.5 EMSC TONGA REGION

P: 6APR2020 123187 20.0S 175.0W 4.0-5.5 BABAA Tonga Islands

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

OCEAN RIDGES

O: 4APR2020 01:52:49 55.9S 27.8W mb=5.1 EMSC SOUTH SANDWICH ISLANDS REGION

P: 7APR2020 123202 55.0S 28.0W 4.0-6.1 BAAAA So. Sandwich Islands

O: 3APR2020 22:50:46 58.7S 25.2W Mw=5.4 EMSC SOUTH SANDWICH ISLANDS REGION

P: 4APR2020 123202 60.0S 26.0W 4.0-6.0 ABAAA 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

O: 4APR2020 03:55:30 28.7N 129.3E mb=4.8 EMSC RYUKYU ISLANDS, JAPAN

P: 1APR2020 122824 30.0N 129.0E 3.5-4.8 BBAAA Kyushu, Japan area

O: 3APR2020 14:39:55 49.5N 158.8E mb=4.1 EMSC EAST OF KURIL ISLANDS

P: 3APR2020 123111 49.0N 158.0E 3.5-5.4 AAAAA NE Pacific

U.S./CANADA*

WESTERN U.S./CANADA

CALIFORNIA

O: 4APR2020 02:08:15 33.2N 116.1W Ml=2.7 EMSC SOUTHERN CALIFORNIA

P: 31MAR2020 122841 33.7N 116.1W 2.5-4.3 BAAAA So. California

O: 4APR2020 03:10:47 34.3N 117.1W Ml=2.1 EMSC SOUTHERN CALIFORNIA

P: 4APR2020 123083 34.1N 117.4W 2.5-4.4 AAAAA So. California

O: 4APR2020 03:17:46 35.0N 118.5W Mw=3.5 EMSC CENTRAL CALIFORNIA

P: 6APR2020 123082 34.0N 118.7W 2.5-4.5 AAAAA So. California

NEIC reported this earthquake of M 3.5 in Central California was felt with intensity II-III in the area(s) of Central California with IV in Bakersfield and lesser shaking in Rosamond, Tehachapi, Lancaster, Mojave, Lake Hughes, Palmdale and Santa Clara.

O: 3APR2020 20:00:54 35.7N 117.5W Ml=2.5 EMSC SOUTHERN CALIFORNIA

P: 5APR2020 123085 35.5N 117.5W 2.5-4.6 AAAAA So. California

O: 3APR2020 12:44:58 36.2N 117.9W ML=2.5 EMSC CENTRAL CALIFORNIA

P: 1APR2020 122808 36.8N 117.5W 2.5-4.3 AAAAA California/Nevada area

O: 4APR2020 03:44:14 37.5N 115.0W ML=2.3 EMSC NEVADA

P: 2APR2020 123069 37.3N 114.9W 2.5-4.6 AAAAA Nevada area

O: 3APR2020 22:21:13 37.6N 121.7W Md=2.1 EMSC NORTHERN CALIFORNIA

P: 5APR2020 123057 37.7N 121.9W 2.5-4.7 AAAAA Central California

O: 3APR2020 07:31:16 38.0N 118.7W Md=2.3 EMSC CENTRAL CALIFORNIA

P: 1APR2020 122810 38.6N 118.6W 2.5-4.3 AAAAA California/Nevada area

P: 6APR2020 123052 38.2N 118.8W 2.5-4.6 BAAAA California/Nevada area

O: 3APR2020 23:44:08 38.3N 115.8W ml=2.1 EMSC NEVADA

P: 1APR2020 122809 38.7N 115.4W 2.5-4.3 AAAAA California/Nevada area

O: 3APR2020 18:34:13 39.6N 121.6W Mh=2.5 EMSC NORTHERN CALIFORNIA

P: 4APR2020 123116 40.2N 121.2W 2.5-4.8 AAAAA Northern California

O: 04APR2020 01:53:20 33.2N 116.3W Mw=4.9 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:03:19 33.5N 116.5W ML=2.0 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:41:28 33.5N 116.5W ML=2.2 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:16:24 33.5N 116.5W ML=2.5 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 01:55:35 33.5N 116.5W ML=3.0 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:59:22 33.5N 116.5W ML=3.0 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 05:12:34 33.5N 116.5W ML=3.5 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 01:54:22 33.5N 116.5W ML=3.8 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:04:59 33.5N 116.5W ML=3.8 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:31:52 33.5N 116.5W Ml=2.0 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:55:05 33.5N 116.5W Ml=2.1 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 01:57:30 33.5N 116.5W Ml=2.2 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:21:28 33.5N 116.5W Ml=2.2 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:46:16 33.5N 116.5W Ml=2.2 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 03:06:59 33.5N 116.5W Ml=2.2 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 06:34:29 33.5N 116.5W Ml=2.2 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 01:58:57 33.5N 116.5W Ml=2.3 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:00:36 33.5N 116.5W Ml=2.3 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 06:13:42 33.5N 116.5W Ml=2.3 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 02:06:17 33.5N 116.5W Ml=2.4 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 04:09:12 33.5N 116.5W Ml=2.4 EMSC SOUTHERN CALIFORNIA

O: 04APR2020 04:07:21 33.5N 116.5W Mw=3.6 EMSC SOUTHERN CALIFORNIA

O: 4APR2020 02:08:15 33.2N 116.1W Ml=2.7 EMSC SOUTHERN CALIFORNIA

P: 31MAR2020 122841 33.7N 116.1W 2.5-4.3 BAAAA So. California

ALASKA

O: 3APR2020 20:48:47 64.1N 149.0W ml=3.0 EMSC CENTRAL ALASKA

P: 6APR2020 123149 61.1N 150.2W 3.2-4.9 BCAAA Central Alaska

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

O: 3APR2020 23:59:06 44.1N 121.2W Ml=2.1 EMSC OREGON

P: 9APR2020 123121 45.3N 121.7W 2.0-3.9 CBAAA Oregon state, U.S.

ROCKY MOUNTAINS REGION

O: 03APR2020 21:52:44 44.2N 115.1W ML=2.5 EMSC SOUTHERN IDAHO

O: 03APR2020 11:10:45 44.2N 115.1W ML=2.8 EMSC SOUTHERN IDAHO

O: 03APR2020 16:10:23 44.3N 115.1W Ml=3.8 EMSC SOUTHERN IDAHO

O: 03APR2020 10:39:09 44.3N 115.2W ML=2.6 EMSC SOUTHERN IDAHO

O: 03APR2020 22:50:03 44.3N 115.2W ML=2.7 EMSC SOUTHERN IDAHO

O: 04APR2020 00:45:35 44.3N 115.2W ML=2.7 EMSC SOUTHERN IDAHO

O: 04APR2020 02:57:46 44.3N 115.2W ML=2.7 EMSC SOUTHERN IDAHO

O: 03APR2020 08:21:57 44.3N 115.2W ML=2.8 EMSC SOUTHERN IDAHO

O: 03APR2020 21:57:24 44.3N 115.2W ML=3.0 EMSC SOUTHERN IDAHO

O: 03APR2020 20:21:47 44.3N 115.2W Ml=4.3 EMSC SOUTHERN IDAHO

O: 03APR2020 21:11:41 44.3N 115.3W ML=2.5 EMSC SOUTHERN IDAHO

O: 03APR2020 07:14:11 44.3N 115.3W ML=2.7 EMSC SOUTHERN IDAHO

O: 03APR2020 09:24:09 44.4N 115.2W ML=2.5 EMSC SOUTHERN IDAHO

O: 03APR2020 12:05:24 44.4N 115.2W ML=2.5 EMSC SOUTHERN IDAHO

O: 03APR2020 07:12:04 44.4N 115.2W ML=2.6 EMSC SOUTHERN IDAHO

O: 03APR2020 07:18:09 44.4N 115.2W ML=2.7 EMSC SOUTHERN IDAHO

O: 03APR2020 07:21:07 44.4N 115.2W ML=2.7 EMSC SOUTHERN IDAHO

O: 03APR2020 10:05:46 44.4N 115.2W ML=2.7 EMSC SOUTHERN IDAHO

O: 03APR2020 21:34:35 44.4N 115.2W ML=2.7 EMSC SOUTHERN IDAHO

O: 04APR2020 02:26:34 44.4N 115.2W ML=2.8 EMSC SOUTHERN IDAHO