MODERATELY LARGE QUAKE SHAKES ICELAND

 

EARTHQUAKE SUMMARY FOR OCTOBER 20, 2020

 

An M 5.6 earthquake in Iceland today was accompanied by a series of lighter shocks. The mainshock was reported felt in southwestern Iceland with intensity V in Keflavik and IV in Harnarfjordur, Gardabaei, Alflanes, Kopavogur, Seltjarnarnes, Reykajik, Grundarhverfi and III in Mosfellsbaer, and Vogar. This earthquake occurred within minutes of local solar noon and was likely promoted by high tidal stresses of the new moon which maximize near this time. This is the strongest earthquake in southern Iceland within about 200 km of this epicenter since an M 6.3 more than 12 years ago on May 29, 2008. Other such events occurred in 1998 and 2000. It is likely that this was triggered by energy from the Alaska Peninsula quake of M 7.5 yesterday combined with high tidal stresses and by the geomagnetic storm of the past day. Forecast 128029 had expected today's event was likely in southern Iceland  around October 17. Iceland is located at the sixth node (60 degrees) from the activity in the Alaska Peninsula.  An earthquake of M 5.3 in the northern Mariana Islands today was also at this distance from the Alaska Peninsula.  It is also at 100 degrees from the M 6.8 in Atacama, Chile of September 1, 2020 and may have been promoted by energy from that source.

 

O: 20OCT2020 13:51:36  63.9N   22.3W ML=3.2  EMSC   ICELAND REGION

O: 20OCT2020 14:01:43  63.9N   22.1W ML=3.6  EMSC   ICELAND REGION

O: 20OCT2020 14:04:48  63.9N   22.1W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 14:28:14  63.9N   22.2W ML=3.0  EMSC   ICELAND REGION

O: 20OCT2020 14:30:38  63.9N   22.2W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 14:35:50  63.9N   22.2W ML=3.7  EMSC   ICELAND REGION

O: 20OCT2020 14:40:04  63.9N   22.0W ML=3.0  EMSC   ICELAND REGION

O: 20OCT2020 14:45:35  63.9N   22.2W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 15:17:19  63.9N   22.0W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 15:22:54  63.9N   22.2W ML=3.0  EMSC   ICELAND REGION

O: 20OCT2020 15:27:12  63.9N   22.3W ML=3.8  EMSC   ICELAND REGION

O: 20OCT2020 15:28:16  63.9N   22.3W ML=3.6  EMSC   ICELAND REGION

O: 20OCT2020 15:30:36  63.9N   22.3W ML=3.0  EMSC   ICELAND REGION

O: 20OCT2020 15:32:45  63.9N   22.3W ML=4.0  EMSC   ICELAND REGION

O: 20OCT2020 15:33:47  63.9N   22.2W ML=3.6  EMSC   ICELAND REGION

O: 20OCT2020 15:35:24  63.9N   22.2W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 18:47:18  63.9N   22.0W ML=3.1  EMSC   ICELAND REGION

O: 21OCT2020 00:22:39  63.9N   22.0W ML=3.3  EMSC   ICELAND REGION

O: 21OCT2020 02:22:47  63.9N   22.1W ML=3.0  EMSC   ICELAND REGION

O: 21OCT2020 06:05:15  63.9N   22.3W ML=3.4  EMSC   ICELAND REGION

O: 21OCT2020 06:23:19  63.9N   22.3W ML=3.4  EMSC   ICELAND REGION

O: 20OCT2020 13:43:16  64.0N   22.1W Mw=5.5  EMSC   ICELAND REGION

O: 20OCT2020 17:22:45  64.0N   22.1W ML=3.0  EMSC   ICELAND REGION

O: 20OCT2020 14:20:34  64.8N   23.8W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 13:49:22  63.9N   22.1W ML=3.0  EMSC   ICELAND REGION               

O: 20OCT2020 15:07:45  64.8N   21.3W ML=3.1  EMSC   ICELAND                      

P: 17OCT2020 128029    63.0N   26.0W 3.0-4.4 ABBAA  Iceland area               

 

 

Other moderate earthquakes at high latitudes today, apparently related to the

M 7.5 in Alaska occurred as aftershocks in Alaska and in the Queen Charlotte Island area of British Columbia (M 4.6) and in the South Shetland Islands (M 5.0). The largest earthquakes in the U.S. or Canada today were aftershocks south of Alaska. These included an M 5.0 felt with light intensity in the Chugiak, Alaska area.

 

An earthquake of M 4.8 in the Unimak Island region about 300 km west of the epicenter of the M 7.5 in the Alaska Peninsula occurred today. This is the strongest earthquake in the Unimak area since an M 5.6 on August 13, the only such event in the past year in the Unimak area.  A minor swarm occurred on July 29 and 30 in the area at the end of July, 2020. Today's event was probably a regional aftershock of the M 7.5 in the Alaska Peninsula yesterday. Forecast 12022 had expected today's activity in the  Unimak Island area was likely around October 18-22.

 

NEIC reported this earthquake of M 4.8 in the Unimak Islands was felt with intensity IV in the area(s) of the Unimak Islands at Unalaska, Alaska.

 

O: 21OCT2020 03:35:25  53.1N  164.6W Mw=4.8  EMSC   UNIMAK ISLAND REGION, ALASKA 

P: 18OCT2020 128022    54.2N  165.0W 3.5-4.8 BAAAA  Unimak Islands, Aleutians  

P: 22OCT2020 128022    54.5N  163.5W 3.5-4.8 ABAAA  Unimak Islands, Aleutians  

 

A listing of events in the Alaska aftershock zone of M>=4.0 follows. A more complete list can be found in the "ALASKA" regional section of this report.

 

O: 20OCT2020 08:06:44  54.2N  159.8W mb=4.4  EMSC   SOUTH OF ALASKA

O: 20OCT2020 13:36:02  54.3N  159.6W mb=4.0  EMSC   SOUTH OF ALASKA

O: 20OCT2020 07:37:00  54.4N  159.8W mb=4.7  EMSC   SOUTH OF ALASKA

O: 20OCT2020 08:16:36  54.4N  159.7W mb=4.0  EMSC   SOUTH OF ALASKA

O: 20OCT2020 12:32:12  54.4N  159.8W Mw=5.2  EMSC   SOUTH OF ALASKA

O: 21OCT2020 01:17:54  54.4N  159.6W Mw=5.1  EMSC   SOUTH OF ALASKA

O: 21OCT2020 06:37:35  54.4N  159.7W mb=4.9  EMSC   SOUTH OF ALASKA

O: 20OCT2020 22:42:35  54.5N  159.9W mb=4.2  EMSC   SOUTH OF ALASKA

O: 20OCT2020 08:18:42  54.6N  159.7W mb=4.8  EMSC   SOUTH OF ALASKA

O: 20OCT2020 21:38:53  54.6N  159.7W mb=4.9  EMSC   SOUTH OF ALASKA

O: 21OCT2020 00:33:51  54.6N  159.7W mb=4.0  EMSC   SOUTH OF ALASKA

O: 20OCT2020 08:37:13  54.7N  159.8W mb=5.0  EMSC   SOUTH OF ALASKA

O: 20OCT2020 23:57:58  54.7N  159.7W mb=4.0  EMSC   SOUTH OF ALASKA

P: 17OCT2020 128007    54.8N  158.7W 3.5-4.8 BAAAA  Alaska Peninsula           

 

The M 4.6 in the Queen Charlotte Islands area which followed the M 7.5 in the Alaska Peninsula yesterday appears to have been a real, triggered event. ECAN reported a number of associated quakes which suggest the event of M 4.6 was real. This is an excellent example of a true P- or S- phase triggered event. In the previous issue of this report it had been noted as:

 

"An earthquake in Queen Charlotte Island, Canada of M 4.6 was reported by Earthquakes Canada four minutes after the Alaska Peninsula M 7.5. It may be a ghost event created by misreading of an automatic earthquake algorithm or a real event triggered by energy from Alaska." (October 19-20, 2020)

 

The last earthquake of M 4.6 or greater within about 200 km of this epicenter occurred six years ago on September 27, 2014. Forecast 128010 had expected this activity was likely within about 100 km of this epicenter around October 14. This epicenter is at 16 degrees from the Alaska Peninsula event and the quake occurred as the P-wave from that epicenter passed through the region.

 

O: 19OCT2020 20:58:07  52.0N  133.3W MB=4.6  ECAN OF VILLAGE OF QUEEN CHARLOTTE, 

P: 14OCT2020 128010    52.0N  132.0W 3.0-4.9 BAAAA  British Colombia           

 

The strongest earthquake in the world today was an M 5.9 in the Tonga Islands. It occurred near local solar noon and was probably promoted by high tidal stresses which maximize near this hour. This epicenter is near the fifth node from the Alaska Peninsula (72 degrees) and was probably promoted by energy from that source. An M 6.4 occurred about 200 km southwest of this epicenter on October 1, 2020 but the last event of equal or greater magnitude within this area was an M 6.2 on November 2, 2013. Forecast 128056 had expected today's event within about 50 km of today's epicenter was likely around October 16.

 

O: 21OCT2020 00:22:34  19.3S  172.4W Mw=5.9  EMSC   TONGA REGION                 

O: 20OCT2020 18:57:54  19.4S  174.1W mb=5.0  EMSC   TONGA                        

P: 16OCT2020 128056    19.0S  173.0W 4.0-5.3 BAAAA  Tonga Islands              

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 20OCT2020 19:55:42  27.4N   96.6E ML=4.2  EMSC   MYANMAR-INDIA BORDER REGION  

P: 21OCT2020 127952    32.0N   95.0E 3.5-4.8 ACBAA  So. China                  

 

O: 21OCT2020 04:04:51  32.0N  104.3E mb=5.1  EMSC   EASTERN SICHUAN, CHINA       

P: 11OCT2020 127660    28.0N  104.0E 4.0-5.3 CCAAA  Myanmar                    

 

O: 20OCT2020 22:30:29  38.3N   75.4E mb=4.3  EMSC   SOUTHERN XINJIANG, CHINA     

P: 18OCT2020 127929    38.0N   74.0E 3.8-5.1 AAAAA  Hindu Kush/Pakistan        

 

O: 20OCT2020 22:58:48  36.5N   70.2E mb=4.2  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 22OCT2020 127929    36.0N   72.0E 3.8-5.1 AABAA  Hindu Kush/Pakistan        

 

O: 20OCT2020 23:08:06  41.3N   73.1E mb=4.7  EMSC   KYRGYZSTAN                    

P: 22OCT2020 127974    40.0N   75.0E 4.0-5.3 ABBAA  Kirgizstan/Xinjiang        

 

INDONESIA AND PHILIPPINES

 

O: 20OCT2020 13:46:59   1.2S   99.4E ML=4.5  EMSC   P. MENTAWAI REGION, INDONESIA

P: 21OCT2020 127869     2.0S   99.0E 4.0-5.3 AAAAA  So. of Sumatera            

 

O: 21OCT2020 00:30:33   1.3S  120.0E ML=4.4  EMSC   SULAWESI, INDONESIA          

P: 15OCT2020 127838     0.0N  120.0E 4.0-5.3 CBAAA  Celebes Sea                

 

O: 20OCT2020 09:27:02   1.7N  127.1E ML=4.4  EMSC   HALMAHERA, INDONESIA         

P: 20OCT2020 127855     1.0S  127.0E 4.0-5.3 ACAAA  Ceram area                 

 

O: 21OCT2020 04:21:22   2.8N   96.2E mb=4.6  EMSC   SIMEULUE, INDONESIA          

P: 16OCT2020 127850     3.0N   99.0E 4.0-5.3 BABAA  So. Sumatera                

 

O: 21OCT2020 00:40:14   3.9S  136.0E mb=4.4  EMSC   PAPUA, INDONESIA             

P: 17OCT2020 127872     1.0S  137.0E 4.0-5.3 BCAAA  West Irian, PNG            

 

O: 20OCT2020 15:28:21   4.9S  133.8E ML=4.1  EMSC   NEAR S COAST OF PAPUA, INDONESI

P: 14OCT2020 127872     4.0S  134.0E 4.0-5.4 CAAAA  West Irian, PNG            

 

O: 20OCT2020 17:28:10   5.1S  141.1E ML=4.0  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 21OCT2020 127872     5.0S  139.0E 4.0-5.4 AABAA  West Irian, PNG            

 

O: 20OCT2020 23:40:40   7.4S  129.2E ML=4.1  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 18OCT2020 127873     6.0S  130.0E 4.0-5.3 ABAAA  West Irian, PNG            

 

O: 21OCT2020 03:44:36   8.7S  116.1E ML=4.1  EMSC   LOMBOK REGION, INDONESIA     

P: 18OCT2020 128054    11.0S  115.0E 4.0-5.3 BCAAA  So. of Indonesia           

 

O: 20OCT2020 13:20:02  18.0N  146.2E Mw=5.3  EMSC   ALAMAGAN REG, N. MARIANA ISLAN

P: 13OCT2020 127889    19.0N  147.0E 4.0-5.4 CAAAA  No. Marianas               

P: 18OCT2020 127889    16.0N  145.0E 4.0-5.3 ABAAA  No. Marianas               

 

NEIC reported this earthquake of M 5.2 in the northern Mariana Islands was felt with intensity II-III in the area(s) of the northern Mariana Islands at Saipan.

 

 

CENTRAL AND SOUTH AMERICA

 

O: 20OCT2020 08:33:27  10.9S   75.5W ML=4.1  EMSC   CENTRAL PERU                 

P: 21OCT2020 127864     9.0S   80.0W 4.0-5.3 ABCAA  No. Peru                   

 

NEIC reported this earthquake of M 4.8 in  Southern Peru was felt with intensity II-III in the area(s) of  Southern Peru at Acari, Arequipa.

 

O: 20OCT2020 21:37:21  13.6N   90.7W mb=4.4  EMSC   OFFSHORE GUATEMALA           

P: 19OCT2020 127880    13.0N   91.0W 3.5-5.2 AAAAA  Guatemala                  

 

O: 20OCT2020 18:40:46  14.9N   94.0W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 19OCT2020 127877    14.0N   93.0W 3.5-5.1 AAAAA  Chiapas, Mexico            

 

O: 20OCT2020 16:54:44  15.4S   73.8W mb=4.8  EMSC   SOUTHERN PERU                

P: 19OCT2020 128044    14.0S   73.0W 4.0-5.3 ABAAA  Central Peru               

 

O: 21OCT2020 04:04:33  16.1N   95.3W ML=4.0  EMSC   OAXACA, MEXICO               

P: 21OCT2020 127877    17.0N   94.0W 3.5-5.0 AAAAA  Chiapas, Mexico            

 

O: 20OCT2020 08:46:16  17.2N   94.0W ML=4.0  EMSC   VERACRUZ, MEXICO             

P: 21OCT2020 127877    17.0N   94.0W 3.5-5.0 AAAAA  Chiapas, Mexico            

 

O: 20OCT2020 16:00:17  18.4N   68.9W ML=3.2  EMSC   DOMINICAN REPUBLIC           

P: 21OCT2020 127893    18.0N   67.0W 3.4-4.8 AABAA  Puerto Rico                 

 

O: 20OCT2020 18:05:27  18.9N   70.1W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 15OCT2020 127894    19.0N   71.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 20OCT2020 23:48:54  18.9S   69.1W mb=4.0  EMSC   TARAPACA, CHILE               

P: 18OCT2020 128053    19.0S   69.0W 4.0-5.3 AAAAA  So. Peru/Bolivia           

 

O: 20OCT2020 19:01:42  19.1N  108.5W ML=4.1  EMSC   REVILLA GIGEDO ISLANDS REGION

P: 20OCT2020 127879    19.0N  107.0W 3.5-5.1 AABAA  Coast of Jalisco, Mexico   

 

O: 20OCT2020 10:23:42  19.2N   67.3W Md=3.4  EMSC   PUERTO RICO REGION           

P: 18OCT2020 127900    20.0N   67.0W 3.0-4.4 AAAAA  Bahamas/No. Caribbean      

 

O: 21OCT2020 00:16:24  24.9N  109.3W ML=4.0  EMSC   GULF OF CALIFORNIA           

P: 18OCT2020 127903    24.0N  109.0W 3.5-4.8 BAAAA  Gulf of California         

 

O: 20OCT2020 11:13:39  38.0S   73.9W ML=4.0  EMSC   OFFSHORE BIO-BIO, CHILE      

P: 17OCT2020 128074    39.0S   73.0W 4.0-5.3 BAAAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O: 21OCT2020 06:48:48  34.3N   25.2E ML=4.1  EMSC   CRETE, GREECE                

P: 19OCT2020 127928    35.0N   26.0E 3.0-4.4 AAAAA  Crete                      

 

O: 20OCT2020 13:51:36  63.9N   22.3W ML=3.2  EMSC   ICELAND REGION

O: 20OCT2020 14:01:43  63.9N   22.1W ML=3.6  EMSC   ICELAND REGION

O: 20OCT2020 14:04:48  63.9N   22.1W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 14:28:14  63.9N   22.2W ML=3.0  EMSC   ICELAND REGION

O: 20OCT2020 14:30:38  63.9N   22.2W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 14:35:50  63.9N   22.2W ML=3.7  EMSC   ICELAND REGION

O: 20OCT2020 14:40:04  63.9N   22.0W ML=3.0  EMSC   ICELAND REGION

O: 20OCT2020 14:45:35  63.9N   22.2W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 15:17:19  63.9N   22.0W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 15:22:54  63.9N   22.2W ML=3.0  EMSC   ICELAND REGION

O: 20OCT2020 15:27:12  63.9N   22.3W ML=3.8  EMSC   ICELAND REGION

O: 20OCT2020 15:28:16  63.9N   22.3W ML=3.6  EMSC   ICELAND REGION

O: 20OCT2020 15:30:36  63.9N   22.3W ML=3.0  EMSC   ICELAND REGION

O: 20OCT2020 15:32:45  63.9N   22.3W ML=4.0  EMSC   ICELAND REGION

O: 20OCT2020 15:33:47  63.9N   22.2W ML=3.6  EMSC   ICELAND REGION

O: 20OCT2020 15:35:24  63.9N   22.2W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 18:47:18  63.9N   22.0W ML=3.1  EMSC   ICELAND REGION

O: 21OCT2020 00:22:39  63.9N   22.0W ML=3.3  EMSC   ICELAND REGION

O: 21OCT2020 02:22:47  63.9N   22.1W ML=3.0  EMSC   ICELAND REGION

O: 21OCT2020 06:05:15  63.9N   22.3W ML=3.4  EMSC   ICELAND REGION

O: 21OCT2020 06:23:19  63.9N   22.3W ML=3.4  EMSC   ICELAND REGION

O: 20OCT2020 13:43:16  64.0N   22.1W Mw=5.5  EMSC   ICELAND REGION

O: 20OCT2020 17:22:45  64.0N   22.1W ML=3.0  EMSC   ICELAND REGION

O: 20OCT2020 14:20:34  64.8N   23.8W ML=3.1  EMSC   ICELAND REGION

O: 20OCT2020 13:49:22  63.9N   22.1W ML=3.0  EMSC   ICELAND REGION               

O: 20OCT2020 15:07:45  64.8N   21.3W ML=3.1  EMSC   ICELAND                      

P: 17OCT2020 128029    63.0N   26.0W 3.0-4.4 ABBAA  Iceland area               

 

SOUTHWEST PACIFIC

 

O: 21OCT2020 02:15:53  17.8S  178.8W mb=4.5  EMSC   FIJI REGION                  

P: 16OCT2020 128055    18.0S  178.0W 4.0-5.3 BAAAA  Tonga Islands              

 

NEIC reported this earthquake of M 4.5 in the Fiji Islands was felt with intensity II-III in the area(s) of the Fiji Islands in Navua, Central Fijis.

 

O: 21OCT2020 00:22:34  19.3S  172.4W Mw=5.9  EMSC   TONGA REGION                 

O: 20OCT2020 18:57:54  19.4S  174.1W mb=5.0  EMSC   TONGA                        

P: 16OCT2020 128056    19.0S  173.0W 4.0-5.3 BAAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 20OCT2020 14:01:22   7.4N   36.0W mb=4.9  EMSC   CENTRAL MID-ATLANTIC RIDGE   

P: 15OCT2020 127840     8.0N   37.0W 4.0-5.6 BAAAA  Central Mid-Atlantic Ridg  

 

O: 21OCT2020 02:00:26  62.4S   58.3W Mw=5.1  EMSC   SOUTH SHETLAND ISLANDS       

P: 14OCT2020 128092    61.0S   58.0W 4.0-5.4 CAAAA  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

 

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

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 20OCT2020 10:30:45  33.0N  116.3W ML=3.2  EMSC   SOUTHERN CALIFORNIA          

O: 20OCT2020 16:53:52  32.9N  116.3W ML=2.2  EMSC   SOUTHERN CALIFORNIA

P: 18OCT2020 127949    32.9N  115.6W 2.5-4.3 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.4 in Southern California was felt with intensity II-III in the area(s) of Southern California in Julian, Pine Valley, Camp;o (IV), Tecate, Baja, La Mesa, San Diego, Chula Vista, Fallbrook.

 

O: 20OCT2020 12:34:02  37.8N  116.5W ml=2.1  EMSC   NEVADA                       

P: 17OCT2020 127917    37.4N  117.2W 2.5-4.3 BAAAA  California/Nevada area     

 

O: 20OCT2020 11:51:55  38.2N  117.7W ML=3.2  EMSC   NEVADA

O: 20OCT2020 17:12:32  38.2N  117.9W ml=2.4  EMSC   NEVADA

O: 21OCT2020 00:12:47  38.2N  117.8W ml=2.2  EMSC   NEVADA

O: 21OCT2020 00:38:06  38.2N  117.8W ml=2.0  EMSC   NEVADA

O: 20OCT2020 11:00:44  38.2N  117.7W ml=2.1  EMSC   NEVADA                       

P: 21OCT2020 127920    39.1N  118.1W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 20OCT2020 16:54:22  38.4N  116.8W ml=2.3  EMSC   NEVADA                       

P: 21OCT2020 127920    39.1N  118.1W 2.5-4.3 AABAA  California/Nevada area     

 

O: 20OCT2020 07:45:28  40.1N  123.8W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 17OCT2020 127925    39.7N  123.7W 2.5-4.3 BAAAA  Central California         

P: 20OCT2020 127987    40.0N  123.0W 2.5-4.3 AAAAA  Northern California        

 

ALASKA

 

O: 21OCT2020 03:35:25  53.1N  164.6W Mw=4.8  EMSC   UNIMAK ISLAND REGION, ALASKA 

P: 18OCT2020 128022    54.2N  165.0W 3.5-4.8 BAAAA  Unimak Islands, Aleutians  

P: 22OCT2020 128022    54.5N  163.5W 3.5-4.8 ABAAA  Unimak Islands, Aleutians  

 

O: 20OCT2020 15:14:06  61.7N  149.9W ML=3.3  EMSC   SOUTHERN ALASKA              

P: 18OCT2020 128026    60.9N  151.1W 3.2-5.0 AAAAA  Central Alaska              

 

NEIC reported this earthquake of M 3.1 in Southern Alaska  was felt with intensity II-III in the area(s) of  Southern Alaska at Wasilla, Willow, Chugiak, Anchorage.

 

O: 21OCT2020 04:08:24  68.5N  146.3W ML=3.3  EMSC   NORTHERN ALASKA              

P: 16OCT2020 128033    69.0N  144.0W 3.0-4.5 BAAAA  Northern Alaska            

 

O: 20OCT2020 04:09:20  59.6N  138.9W MB=3.7  ECAN Yakutat, AK                    

P: 17OCT2020 128021    59.0N  139.0W 3.0-4.4 BAAAA  Southeast Alaska           

 

O: 20OCT2020 08:06:44  54.2N  159.8W mb=4.4  EMSC   SOUTH OF ALASKA

O: 20OCT2020 09:51:42  54.2N  159.6W ml=3.4  EMSC   SOUTH OF ALASKA

O: 20OCT2020 14:25:16  54.2N  159.7W mb=3.9  EMSC   SOUTH OF ALASKA

O: 20OCT2020 17:53:53  54.2N  159.6W ML=3.3  EMSC   SOUTH OF ALASKA

O: 20OCT2020 22:46:03  54.2N  159.6W mb=3.9  EMSC   SOUTH OF ALASKA

O: 21OCT2020 01:45:16  54.2N  159.7W ML=3.4  EMSC   SOUTH OF ALASKA

O: 20OCT2020 11:43:02  54.3N  159.7W ML=3.7  EMSC   SOUTH OF ALASKA

O: 20OCT2020 13:36:02  54.3N  159.6W mb=4.0  EMSC   SOUTH OF ALASKA

O: 20OCT2020 18:21:58  54.3N  159.7W ml=3.4  EMSC   SOUTH OF ALASKA

O: 20OCT2020 20:23:42  54.3N  159.7W ml=3.7  EMSC   SOUTH OF ALASKA

O: 20OCT2020 07:37:00  54.4N  159.8W mb=4.7  EMSC   SOUTH OF ALASKA

O: 20OCT2020 08:16:36  54.4N  159.7W mb=4.0  EMSC   SOUTH OF ALASKA

O: 20OCT2020 09:06:13  54.4N  159.7W mb=3.8  EMSC   SOUTH OF ALASKA

O: 20OCT2020 09:17:48  54.4N  159.9W ml=3.9  EMSC   SOUTH OF ALASKA

O: 20OCT2020 12:32:12  54.4N  159.8W Mw=5.2  EMSC   SOUTH OF ALASKA

O: 20OCT2020 18:32:03  54.4N  159.6W ML=3.4  EMSC   SOUTH OF ALASKA

O: 20OCT2020 20:16:35  54.4N  159.6W ml=3.4  EMSC   SOUTH OF ALASKA

O: 21OCT2020 01:17:54  54.4N  159.6W Mw=5.1  EMSC   SOUTH OF ALASKA

O: 21OCT2020 02:05:26  54.4N  159.8W mb=3.4  EMSC   SOUTH OF ALASKA

O: 21OCT2020 06:37:35  54.4N  159.7W mb=4.9  EMSC   SOUTH OF ALASKA

O: 20OCT2020 11:15:02  54.5N  159.7W ML=3.5  EMSC   SOUTH OF ALASKA

O: 20OCT2020 22:42:35  54.5N  159.9W mb=4.2  EMSC   SOUTH OF ALASKA

O: 21OCT2020 01:58:48  54.5N  160.2W mb=3.8  EMSC   ALASKA PENINSULA

O: 21OCT2020 02:22:06  54.5N  159.6W mb=3.6  EMSC   SOUTH OF ALASKA

O: 20OCT2020 08:18:42  54.6N  159.7W mb=4.8  EMSC   SOUTH OF ALASKA

O: 20OCT2020 21:38:53  54.6N  159.7W mb=4.9  EMSC   SOUTH OF ALASKA

O: 21OCT2020 00:33:51  54.6N  159.7W mb=4.0  EMSC   SOUTH OF ALASKA

O: 20OCT2020 08:37:13  54.7N  159.8W mb=5.0  EMSC   SOUTH OF ALASKA

O: 20OCT2020 23:57:58  54.7N  159.7W mb=4.0  EMSC   SOUTH OF ALASKA

O: 20OCT2020 16:24:41  55.0N  159.4W mb=3.7  EMSC   SOUTH OF ALASKA

O: 20OCT2020 19:43:26  54.1N  159.6W ml=3.4  EMSC   SOUTH OF ALASKA              

P: 17OCT2020 128007    54.8N  158.7W 3.5-4.8 BAAAA  Alaska Peninsula           

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 20OCT2020 21:36:58  46.1N  122.7W ML=2.6  EMSC   WASHINGTON                    

P: 16OCT2020 128004    48.4N  123.2W 2.0-3.9 BCAAA  Washington state, U.S.     

 

NEIC reported this earthquake of M 2.5 in Washington State  was felt with intensity II-III in the area(s) of  Washington State at Kelso and Bellevue.

 

O: 19OCT2020 20:58:07  52.0N  133.3W MB=4.6  ECAN OF VILLAGE OF QUEEN CHARLOTTE, 

P: 14OCT2020 128010    52.0N  132.0W 3.0-4.9 BAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 20OCT2020 11:07:47  44.5N  115.2W Ml=2.5  EMSC   SOUTHERN IDAHO                

P: 22OCT2020 127978    44.6N  116.0W 2.0-3.8 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 20OCT2020 14:58:52  36.0N   98.1W mb=2.3  EMSC   OKLAHOMA                     

P: 18OCT2020 127956    36.0N   97.0W 2.0-3.9 AAAAA  Southern Plains            

 

O: 20OCT2020 18:50:21  36.3N   89.5W Md=2.3  EMSC   TENNESSEE                    

P: 17OCT2020 127935    36.3N   89.5W 2.0-4.1 BAAAA  New Madrid area            

 

O: 20OCT2020 19:44:06  37.2N   97.9W mb=2.8  EMSC   KANSAS                        

P: 17OCT2020 127957    37.0N   98.0W 2.0-3.8 BAAAA  Southern Plains            

 

NEIC reported this earthquake of M 2.8 in Kansas  was felt with intensity II-III in the area(s) of  Kansas at Harper and Anthony.

 

HAWAII

 

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