MAJOR AFTERSHOCK HITS ALASKA PENINSULA AREA

 

EARTHQUAKE SUMMARY FOR OCTOBER 19, 2020

 

A major aftershock of M 7.5 in the area south of Alaska and west of the Alaska Peninsula near Unimak Island occurred today. It was reported strongly felt with damage intensity VIII at Sand Point, Perryville, Cold Bay and King Cove; V in Chignik Lagoon, Chignik, and IV in False Pass and Pilot Point and Akutan, Alaska. The tsunami from the M 7.5 was recorded by PTWC in Hilo Hawaii and Hanalei, Hawaii with height of 11 inches (28 cm); Sand Point,  and Chignik Bay Alaska (2.5 feet); PTWC reported two tsunami waves of about 1.3 meters (4 feet 3 inches) were also generated. A tsunami warning was issued but later downgraded by PTWC. Local communities issued evacuations to higher elevations. Many boats headed out to sea, the safest place during moderate tsunamis. Many were prepared for a strong aftershock of the M 7.8 in the area of July 22. This summary had expected a strong earthquake in the western U.S. at this time with the new moon as:

 

"Based on the history of large earthquakes around the world over the past four months, it is likely that a strong enhancement of seismicity will coincide with the upcoming new moon. This summary has noted this as:

 

"The new moon will arrive on October 16, 2020 at 19:31 UT. Longitudes which are near 115 West and 65 East are at sub-solar and antisolar conditions and will experience the strongest tidal stresses at this time. In the west these include areas of California and western U.S. and Canada and the Gulf of California as well as areas of the southeast Pacific Rise including areas near Easter Island. In the east these include areas of Afghanistan, Iran, India and Pakistan and portions of the Southwest Indian Ocean. These areas are most likely to see tidally triggered strong seismic enhancement in the next week. Many areas are subject to tidal enhancement of seismicity and the coming week should see several strong to major earthquakes in the world. In the past four months six of the seven quakes of M>=6.7 have occurred within several days of the New moon. These included events in the mid-Atlantic; Banda Sea; Sumatra; Alaska Peninsula; Oaxaca, Mexico and the Kermadec Islands. Three of these occurred on the 21st-23rd of the month the other three occurred on the 18th of the month." (October 12-13, 2020)

 

The earthquakes in question follow:

 

MO DA HR MN SE YEAR LAT    LONG  DEP MAG Location

 

09 18 21 43 58 2020   0.8  -26.7  30 6.7 Central Mid-Atlantic Ridge

09 01 04 09 30 2020 -28.0  -71.0  30 6.8 Atacama, Chile

08 21 04 09 52 2020  -6.7  123.5 643 6.9 Banda Sea

08 18 22 29 22 2020  -4.2  101.2  10 6.8 Sumatra

07 22 06 12 44 2020  55.1 -158.6  30 7.8 Alaska Peninsula

06 23 15 29 04 2020  16.1  -95.9  10 7.4 Oaxaca, Mexico

06 18 12 49 00 2020 -33.4 -177.5 100 7.4 Kermadec Islands

" (October 13, 2020)

 

and

 

"Regional seismicity in Central and southern California and western North America peaks around October 18-20 and exactly half a year earlier around April 18-20 and often includes a strong earthquake towards the end of October. This  appears to be related to strong hurricanes and nor'easters at this time of year making landfall on the eastern seaboard of the U.S. Another contributing  factor is very strong geomagnetic storms or solar flares such as occurred with the Loma Prieta earthquake in October 1989. There is no evidence that a strong oceanic storm making landfall nor of a major geomagnetic or solar event at this time, so at this time only a moderate enhancement in regional seismicity in the western U.S or Canada is expected, but this could change as time proceeds." (October 10, 2020)

 

Since that time a series of B- and C-class solar flares occurred beginning on October 15 and culminating in the largest solar flare since May 29, 2020. This summary noted this in the previous issue as:

 

"It may also have been affected by a C 3.5 solar flare which occurred earlier in the day and was the strongest such observed flare since late May, 2020." (October 18, 2020)

 

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

#-------------------------------------------------------------------------------

 

6960       1457   1511      1516   C3.5      (October 16, 2020)   1.3E-03  

 

The last flare of larger size was:

 

 450       1041   1046      1050   C9.3      (May 29, 2020)   1.4E-03      

 

A new geomagnetic storm reached active disturbance today at high latitudes. This was most active in the several hours before the M 7.5 in Alaska. This summary noted today's activity at high latitudes in the geomagnetic field as:

 

"The geomagnetic field saw quiet conditions today. The AP level was 6.  High latitude geomagnetic field saw disturbed conditions with AP 14. This is the strongest disturbance in the high latitude geomagnetic field since October 1-2. It peaked with KP reaching 5 from 1200 - 1800 UT, the strongest KP since October 2. Strong disturbances in the geomagnetic field can help promote seismicity and may do so at high latitudes with this storm." (October 19, 2020)

 

Continuing far-field triggering of seismicity is considered likely from today's event. This summary has detailed moderate to large earthquakes at likely triggering distances from the M 7.8 on July 22 in previous issues as:

 

180 degrees (node 2): Alaska Peninsula to South of Africa, 

144 degrees (node 5): Alaska Peninsula to South Shetland Islands, South Georgia Islands, Mozambique, South Africa, 

120 degrees (node 3): Alaska Peninsula to Los Lagos, Chile,

101-104 degrees (node 7): Alaska Peninsula to Socotra, South of Sumatra, Owen Fracture Zone, Central Mid-Atlantic, Honduras, Sumatra, South Pacific, West Chile Rise, northern Chile, southern Peru, Java, Sumatra, South Island, New Zealand, New Guinea to Gulf of California, South of Africa, Utah, Wyoming, Idaho, Southern California,

90 degrees (node 4): Alaska Peninsula to Northern Peru, Banda Sea, Iran, Crete, Lebanon, Pakistan, Kermadec Islands, Canary Islands,

72 degrees (node 5): Alaska Peninsula to Dominican Republic, Galapagos, Mindanao, Philippines, Fiji, England, Samoa, Philippines, New Guinea to Fox Islands, Xizang, China,

60 degrees (node 6): Alaska Peninsula to Vera Cruz, Oaxaca, Mexico

52 degrees (node 7): Alaska Peninsula to Pennsylvania, Greenland Sea, Quebec, North Carolina, New York, Izu Islands, Japan, 

 

Further seismic enhancement is likely in these regions in coming days.

 

The only other earthquake within about 250 km of today's epicenter with M>=7.5 in the past 30 years was the M 7.8 on July 22, 2020. Today's epicenter is about 100 km southwest of the July mainshock. Today’s activity in the Alaska Peninsula had been expected in forecast 128007 most likely to occur around October 17. Following is a listing of events of  M>=5.0 in the area today. A more complete listing can be found in the regional "ALASKA" section below.

 

O: 19OCT2020 21:22:27  54.3N  159.6W mb=5.2  EMSC   SOUTH OF ALASKA

O: 19OCT2020 21:32:19  54.3N  159.8W Mw=5.5  EMSC   SOUTH OF ALASKA

O: 19OCT2020 21:45:27  54.3N  159.9W Mw=5.9  EMSC   SOUTH OF ALASKA

O: 19OCT2020 21:05:57  54.4N  159.6W mb=5.8  EMSC   SOUTH OF ALASKA

O: 20OCT2020 04:07:06  54.4N  159.7W Mw=5.6  EMSC   SOUTH OF ALASKA

O: 19OCT2020 20:54:40  54.7N  159.8W Mw=7.5  EMSC   SOUTH OF ALASKA

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

 

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.

 

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           

 

Similarly an M 3.8 in Iceland ten minutes after the Alaska Peninsula event recorded by EMSC may or may not have occurred. Forecast 128029 had expected activity in this area in mid-October. 

 

O: 19OCT2020 21:04:11  66.4N   17.3W ML=3.8  EMSC   ICELAND REGION               

P: 15OCT2020 128029    66.0N   16.0W 3.0-4.4 BAAAA  Iceland area                

 

An M 4.9 near the antipode of the Alaskan Peninsula occurred eight hours earlier in the area South of Africa. This area became active in early and mid-August with an M 4.7 on August 3 and an M 4.9 on August 17. When the earthquake on August 17 occurred this summary noted in this regard:

 

"An earthquake of M 4.9 occurred today south of Africa within several km of the exact antipode of the M 7.8 in the Alaska Peninsula of July 22, 2020. This continues a series of events in this region which have occurred with moderate to large magnitude since the Alaska Peninsula quake. The area was expected to see enhanced activity at this time due to antipodal energy focusing from Alaska. Today's event is the nearest of these event to the exact antipode (compare 54N 158W and 53S 26E)." (August 17, 2020)

 

Forecast 128088 had expected today's activity south of Africa was likely in mid-October.

 

O: 19OCT2020 12:20:55  52.9S   25.7E mb=4.9  EMSC   SOUTH OF AFRICA              

P: 16OCT2020 128088    51.0S   29.0E 4.0-5.6 BBBAA  Atlantic-Indian Ridge      

 

A moderate earthquake of M 4.6-5.0 was widely felt in the Dominican Republic today. It was reported by NEIC with maximum intensity IV in the Dominican Republic at Las Terrenas, Samana, Monte Plata, El Carril, and II-III in San Pedro, Santo Domingo, Otra Banda, El Llano and in Puerto Rico at San Sebastian.

No tsunami was reported with this earthquake. The last earthquake within about

100 km of this epicenter in the Dominican Republic with M>=4.6 was an M 4.6 on December 22, 2018. The last of larger magnitude was an M 5.2 on September 23, 2018. Forecast 127894 had expected today's event in this area was likely in mid-October. A series of smaller regional events over the past several weeks led to today's M 4.6. Today's epicenter is near the fifth node (72 degrees) from the Alaska Peninsula.

 

O: 19OCT2020 09:00:46  19.1N   69.7W mb=4.6  EMSC   DOMINICAN REPUBLIC           

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

 

Earthquakes of M 5.8 and 5.9  (BMG magnitudes) hit the area south of Sumatra today.  BMG reported they were felt with intensity IV-V in the area near Bengkulu, Mukumuku, Tuapejat, Muara Aman, Tais and others. This continues a series of earthquakes in this area over the past four days as noted in previous issues of this summary as:

 

"The M 5.3 south of Sumatra continued a swarm in the area which began with an M 5.4 on October 15, 2020. It is the second largest event in this swarm to date. It occurred near local solar midnight and may have affected by high tidal stresses with the new moon. Forecast 127869 had expected activity in this area south of Sumatra was likely around October 21." (October 17-19, 2020)

 

Forecast 127869 had expected this area would be active around October 21. The M 5.9 occurred within about half an hour of local solar noon, a time at which tidal stresses area maximized and was probably promoted by  these stresses. An M 6.9 hit about 200 km southeast of today's epicenter on August 18, 2020 with the new moon but the last earthquake within this radius of larger magnitude was an M 6.1 on February 2, 2019.

 

These epicenters are located at 99 degrees from the Alaska Peninsula and energy transfer between the two areas may have helped trigger some of this activity in Alaska and Sumatra.

 

O: 19OCT2020 07:31:30   3.3S  100.4E Mw=5.9  EMSC   KEP. MENTAWAI REGION, INDONESI

O: 19OCT2020 07:47:21   3.3S  100.4E Mw=5.5  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 19OCT2020 09:42:55   3.3S  100.4E mb=5.1  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 19OCT2020 08:14:04   3.4S  100.4E mb=4.8  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 20OCT2020 01:52:07   3.5S  100.3E ML=4.2  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 20OCT2020 00:41:38   4.0S   99.9E mb=4.5  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

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

 

Seismicity in California was also active today. The strongest activity in this area was in the Redwood Valley area of northern California where events of M 3.5 and 4.0 were recorded by NEIC.  NEIC reported these earthquakes of M 4.0 and 3.5 in  Northern California was felt with intensity II-III in the area(s) of  Redwood Valley, Potter Valley, Willits, Ukiah, Comptche, Fort Bragg, Mendocino, Albion and Lakeport.  NEIC reported this earthquake of M 2.9 in northern California  was felt with intensity II-III in the area(s) of  northern California in Redwood Valley, Potter Valley, Willits, Mendocino, Nice.  The last earthquake of M>=4 in the area was an M 4.2 on August 19, 2020 and today's activity appears to be aftershocks of that event. Forecast 127925 had expected today's event within about 10 km was likely in mid-October.

 

O: 20OCT2020 03:02:52  39.4N  123.3W Md=2.0  EMSC   NORTHERN CALIFORNIA

O: 20OCT2020 04:01:06  39.4N  123.2W Md=2.9  EMSC   NORTHERN CALIFORNIA

O: 20OCT2020 01:59:46  39.4N  123.3W ML=3.1  EMSC   NORTHERN CALIFORNIA          

O: 20OCT2020 01:59:46  39.4N  123.3W ML=3.5  ANSS   NORTHERN CALIFORNIA          

O: 20OCT2020 01:58:50  39.4N  123.3W ML=4.0  ANSS   NORTHERN CALIFORNIA          

P: 14OCT2020 127925    39.4N  123.3W 2.5-4.3 CAAAA  Central California         

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

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 19OCT2020 22:03:58  24.5N  122.3E ML=4.3  TAI    Hualien, Taiwan              

P: 15OCT2020 127913    23.0N  122.0E 4.0-5.3 BBAAA  Taiwan                     

 

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

 

O: 19OCT2020 10:17:40  39.6N   72.8E mb=4.7  EMSC   KYRGYZSTAN                    

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

 

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

 

INDONESIA AND PHILIPPINES

 

O: 19OCT2020 08:22:06   0.1S  125.8E mb=4.7  EMSC   MOLUCCA SEA                  

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

 

O: 20OCT2020 01:00:19   0.7N  121.0E ML=4.0  EMSC   MINAHASA, SULAWESI, INDONESIA

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

 

O: 19OCT2020 18:41:42   1.3S   99.4E ML=4.3  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

O: 20OCT2020 03:12:49   1.7N  127.4E mb=4.6  EMSC   HALMAHERA, INDONESIA          

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

 

O: 19OCT2020 09:38:48   2.9N   96.3E Mw=5.1  EMSC   SIMEULUE, INDONESIA          

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

 

O: 19OCT2020 07:31:30   3.3S  100.4E Mw=5.9  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

O: 19OCT2020 14:11:57   7.1S  126.6E Mw=5.2  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 16OCT2020 127853     7.0S  125.0E 4.0-5.3 BABAA  Banda Sea                  

 

NEIC reported this earthquake of M 5.2 in the Banda Sea, Indonesia  was felt with intensity II-III in the area(s) of Dili Dili, East Timor, Indonesia.

 

O: 19OCT2020 20:59:06   7.9N  126.6E ML=4.2  EMSC   MINDANAO, PHILIPPINES        

P: 21OCT2020 127842     7.0N  126.0E 4.0-5.3 AAAAA  Central Philippines        

 

O: 19OCT2020 19:57:14   8.3S  108.1E ML=4.7  EMSC   JAVA, INDONESIA              

O: 19OCT2020 16:09:30   9.9S  108.7E mb=4.9  EMSC   SOUTH OF JAVA, INDONESIA     

P: 17OCT2020 127868     9.0S  111.0E 4.0-5.3 AACAA  So. of Java                

 

O: 19OCT2020 21:03:34  10.6N  126.3E ML=4.4  EMSC   PHILIPPINE ISLANDS REGION    

P: 22OCT2020 127846     8.0N  127.0E 4.0-5.3 BCAAA  Halmahera                  

 

 

O: 19OCT2020 19:32:55  11.6N  124.3E ML=4.5  EMSC   LEYTE, PHILIPPINES           

P: 21OCT2020 127884    12.0N  122.0E 3.5-4.8 AABAA  Luzon, Philippines         

 

O: 19OCT2020 07:47:21   3.3S  100.4E Mw=5.9  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 19OCT2020 07:47:21   3.3S  100.4E Mw=5.5  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 19OCT2020 09:42:55   3.3S  100.4E mb=5.1  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 19OCT2020 08:14:04   3.4S  100.4E mb=4.8  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 20OCT2020 01:52:07   3.5S  100.3E ML=4.2  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 20OCT2020 00:41:38   4.0S   99.9E mb=4.5  EMSC   SOUTHWEST OF SUMATRA, INDONESIA

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

 

CENTRAL AND SOUTH AMERICA

 

O: 19OCT2020 17:13:40   1.1S   79.9W ML=4.0  EMSC   ECUADOR                      

P: 16OCT2020 127856     1.0S   81.0W 4.0-5.3 BAAAA  Ecuador                    

P: 21OCT2020 127856     1.0S   78.0W 4.0-5.3 AABAA  Ecuador                    

 

O: 19OCT2020 13:18:52  10.8S   74.6W mb=4.6  EMSC   CENTRAL PERU                 

O: 19OCT2020 21:50:40  10.9S   75.5W ML=4.2  EMSC   CENTRAL PERU                 

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

 

O: 19OCT2020 16:36:26  14.7N   93.7W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

O: 19OCT2020 08:35:32  15.0N   93.0W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

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

 

O: 19OCT2020 08:53:14  15.1N   94.6W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 19OCT2020 15:36:08  15.3N   94.0W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

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

 

O: 19OCT2020 20:53:37  17.1N   94.4W ML=4.1  EMSC   OAXACA, MEXICO               

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

 

O: 19OCT2020 15:37:07  17.9N   66.8W ML=3.3  EMSC   PUERTO RICO REGION            

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

 

O: 19OCT2020 09:00:46  19.1N   69.7W mb=4.6  EMSC   DOMINICAN REPUBLIC           

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

 

O: 19OCT2020 08:38:59  23.7N  104.1W ML=4.2  EMSC   DURANGO, MEXICO              

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

 

O: 19OCT2020 16:38:44  27.3N  111.4W ML=3.7  EMSC   GULF OF CALIFORNIA           

P: 14OCT2020 127903    28.0N  110.0W 3.5-4.8 BABAA  Gulf of California         

 

O: 20OCT2020 01:09:18  30.7S   71.4W mb=4.2  EMSC   COQUIMBO, CHILE              

O: 19OCT2020 21:59:05  31.7S   70.6W mb=4.1  EMSC   COQUIMBO, CHILE              

P: 17OCT2020 128073    31.0S   70.0W 4.0-5.4 AAAAA  Central Chile              

 

NEIC reported this earthquake of M 4.2 in  Valparaiso, Chile was felt with intensity II-III in the area(s) of  Valparaiso, Chile in Vina del Mar and Valparaiso.

 

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

 

AFRICA AND EUROPE

 

O: 20OCT2020 02:36:46  37.0N   20.9E mb=4.3  EMSC   CENTRAL MEDITERRANEAN SEA    

P: 17OCT2020 127936    37.0N   21.0E 3.0-4.3 BAAAA  No. Greece                 

 

O: 19OCT2020 21:04:11  66.4N   17.3W ML=3.8  EMSC   ICELAND REGION               

P: 15OCT2020 128029    66.0N   16.0W 3.0-4.4 BAAAA  Iceland area               

 

O: 19OCT2020 09:08:31  71.7N    3.3W mb=4.4  EMSC   JAN MAYEN ISLAND REGION      

P: 17OCT2020 128041    71.0N    7.0W 3.5-4.8 AAAAA  Jan Mayen Isl. area        

 

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

 

SOUTHWEST PACIFIC

 

O: 19OCT2020 21:58:00  17.4S  178.5W mb=4.5  EMSC   FIJI REGION                  

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

 

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

 

OCEAN RIDGES

 

O: 19OCT2020 12:20:55  52.9S   25.7E mb=4.9  EMSC   SOUTH OF AFRICA              

P: 16OCT2020 128088    51.0S   29.0E 4.0-5.6 BBBAA  Atlantic-Indian Ridge      

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 19OCT2020 17:31:20  36.9S  177.1E ML=4.1  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 19OCT2020 128078    37.0S  178.0E 3.0-4.3 AAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 19OCT2020 21:59:55  47.1N  152.4E mb=4.6  EMSC   KURIL ISLANDS                

P: 22OCT2020 128000    49.0N  153.0E 3.5-5.3 BBAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 19OCT2020 17:21:37  34.9N  116.3W Ml=3.1  EMSC   SOUTHERN CALIFORNIA

O: 19OCT2020 21:47:47  34.9N  116.3W ML=2.5  EMSC   SOUTHERN CALIFORNIA

O: 19OCT2020 09:34:58  34.9N  116.3W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 15OCT2020 127951    34.6N  118.4W 2.5-4.3 BABAA  So. California             

 

NEIC reported this earthquake of M 3.1 in Southern California  was felt with intensity II-III in the area(s) of  Southern California in Victorville and Los Angeles.

 

O: 19OCT2020 21:00:32  35.5N  115.6W ml=3.2  EMSC   SOUTHERN CALIFORNIA          

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

 

O: 19OCT2020 09:45:33  36.0N  117.4W ML=2.6  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2020 127917    36.0N  117.9W 2.5-4.3 BAAAA  California/Nevada area     

 

O: 19OCT2020 18:00:23  36.5N  121.1W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2020 127921    36.4N  121.0W 2.5-4.3 BAAAA  Central California         

 

O: 19OCT2020 17:19:18  36.9N  121.6W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 18OCT2020 127922    36.9N  121.7W 2.5-4.3 AAAAA  Central California         

 

O: 19OCT2020 10:14:39  38.6N  122.0W Md=2.6  EMSC   NORTHERN CALIFORNIA

O: 19OCT2020 10:00:43  38.6N  122.0W Ml=2.9  EMSC   NORTHERN CALIFORNIA          

P: 22OCT2020 127924    38.5N  122.7W 2.5-4.3 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.9 in northern California west of Sacramento  was felt with intensity II-III in the area(s) of  northern California west of Sacramento at Winters, Davis, Fairfield and Novato.

 

O: 19OCT2020 21:24:10  38.7N  117.1W ml=2.3  EMSC   NEVADA                       

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

 

O: 19OCT2020 20:45:52  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 16OCT2020 127924    38.7N  122.7W 2.5-4.3 BAAAA  Central California         

 

O: 20OCT2020 03:02:52  39.4N  123.3W Md=2.0  EMSC   NORTHERN CALIFORNIA

O: 20OCT2020 04:01:06  39.4N  123.2W Md=2.9  EMSC   NORTHERN CALIFORNIA

O: 20OCT2020 01:59:46  39.4N  123.3W ML=3.1  EMSC   NORTHERN CALIFORNIA          

O: 20OCT2020 01:59:46  39.4N  123.3W ML=3.5  ANSS   NORTHERN CALIFORNIA          

O: 20OCT2020 01:58:50  39.4N  123.3W ML=4.0  ANSS   NORTHERN CALIFORNIA          

P: 14OCT2020 127925    39.4N  123.3W 2.5-4.3 CAAAA  Central California         

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

 

NEIC reported these earthquakes of M 4.0 and 3.5 in  Northern California was felt with intensity II-III in the area(s) of  Redwood Valley, Potter Valley, Willits, Ukiah, Comptche, Fort Bragg, Mendocino, Albion and Lakeport.

NEIC reported this earthquake of M 2.9 in northern California  was felt with intensity II-III in the area(s) of  northern California in Redwood Valley, Potter Valley, Willits, Mendocino, Nice.

 

O: 20OCT2020 01:37:11  40.3N  121.2W Md=2.0  EMSC   NORTHERN CALIFORNIA           

P: 17OCT2020 127986    40.0N  120.9W 2.5-4.3 BAAAA  Northern California        

 

NEIC reported this earthquake of M 2.6 in  Central California was felt with intensity II-III in the area(s) of  Central California at Big Sur.

 

O: 19OCT2020 11:44:08  38.1N  118.0W ml=2.4  EMSC   NEVADA

O: 19OCT2020 12:20:54  38.1N  118.2W ml=2.4  EMSC   NEVADA

O: 19OCT2020 07:42:01  38.2N  117.8W ml=2.1  EMSC   NEVADA

O: 19OCT2020 08:43:41  38.2N  118.0W ml=2.5  EMSC   NEVADA

O: 19OCT2020 10:52:54  38.2N  117.9W ml=2.1  EMSC   NEVADA

O: 19OCT2020 16:04:24  38.2N  118.0W ml=2.4  EMSC   NEVADA                       

P: 13OCT2020 127918    37.9N  118.2W 2.5-4.4 CAAAA  California/Nevada area     

 

ALASKA

 

O: 19OCT2020 21:59:40  53.3N  161.5W ml=3.6  EMSC   SOUTH OF ALASKA              

P: 15OCT2020 128022    54.5N  161.8W 3.5-4.8 BBAAA  Unimak Islands, Aleutians  

 

O: 20OCT2020 02:57:50  54.7N  159.9W mb=4.1  EMSC   SOUTH OF ALASKA              

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

 

O: 19OCT2020 21:30:15  55.6N  154.7W ML=4.1  EMSC   SOUTH OF ALASKA              

P: 18OCT2020 128007    54.7N  156.9W 3.5-4.8 AABAA  Alaska Peninsula           

 

O: 20OCT2020 04:09:20  59.6N  139.0W ML=3.7  EMSC   SOUTHEASTERN ALASKA           

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

 

O: 19OCT2020 19:42:00  68.9N  147.8W ml=3.0  EMSC   NORTHERN ALASKA              

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

 

O: 20OCT2020 01:33:31  54.0N  159.7W ml=3.9  EMSC   SOUTH OF ALASKA

O: 19OCT2020 22:00:57  54.2N  159.9W mb=4.3  EMSC   SOUTH OF ALASKA

O: 20OCT2020 02:52:24  54.2N  159.6W ml=3.9  EMSC   SOUTH OF ALASKA

O: 20OCT2020 05:39:20  54.2N  159.7W mb=4.3  EMSC   SOUTH OF ALASKA

O: 19OCT2020 21:22:27  54.3N  159.6W mb=5.2  EMSC   SOUTH OF ALASKA

O: 19OCT2020 21:32:19  54.3N  159.8W Mw=5.5  EMSC   SOUTH OF ALASKA

O: 19OCT2020 21:45:27  54.3N  159.9W Mw=5.9  EMSC   SOUTH OF ALASKA

O: 19OCT2020 22:05:16  54.3N  159.8W mb=4.4  EMSC   SOUTH OF ALASKA

O: 19OCT2020 22:17:45  54.3N  160.2W mb=4.3  EMSC   ALASKA PENINSULA

O: 19OCT2020 22:28:02  54.3N  159.8W mb=4.5  EMSC   SOUTH OF ALASKA

O: 19OCT2020 23:17:08  54.3N  159.9W mb=4.6  EMSC   SOUTH OF ALASKA

O: 20OCT2020 00:34:13  54.3N  159.6W mb=4.8  EMSC   SOUTH OF ALASKA

O: 20OCT2020 01:21:29  54.3N  159.6W mb=4.7  EMSC   SOUTH OF ALASKA

O: 20OCT2020 04:25:19  54.3N  159.8W mb=4.3  EMSC   SOUTH OF ALASKA

O: 20OCT2020 06:44:42  54.3N  159.7W mb=4.1  EMSC   SOUTH OF ALASKA

O: 19OCT2020 21:05:57  54.4N  159.6W mb=5.8  EMSC   SOUTH OF ALASKA

O: 19OCT2020 21:27:05  54.4N  159.6W mb=3.9  EMSC   SOUTH OF ALASKA

O: 19OCT2020 21:28:59  54.4N  159.6W mb=4.4  EMSC   SOUTH OF ALASKA

O: 19OCT2020 21:43:35  54.4N  159.7W mb=4.5  EMSC   SOUTH OF ALASKA

O: 19OCT2020 22:38:14  54.4N  159.6W ml=3.8  EMSC   SOUTH OF ALASKA

O: 19OCT2020 23:41:02  54.4N  159.6W mb=4.5  EMSC   SOUTH OF ALASKA

O: 20OCT2020 00:31:26  54.4N  159.7W mb=4.1  EMSC   SOUTH OF ALASKA

O: 20OCT2020 00:40:11  54.4N  159.7W mb=4.8  EMSC   SOUTH OF ALASKA

O: 20OCT2020 00:44:19  54.4N  159.6W mb=4.8  EMSC   SOUTH OF ALASKA

O: 20OCT2020 00:56:36  54.4N  159.6W mb=4.8  EMSC   SOUTH OF ALASKA

O: 20OCT2020 01:48:04  54.4N  159.6W ML=3.5  EMSC   SOUTH OF ALASKA

O: 20OCT2020 04:07:06  54.4N  159.7W Mw=5.6  EMSC   SOUTH OF ALASKA

O: 20OCT2020 05:31:14  54.4N  159.8W mb=4.1  EMSC   SOUTH OF ALASKA

O: 19OCT2020 22:20:12  54.5N  159.7W mb=4.8  EMSC   SOUTH OF ALASKA

O: 19OCT2020 23:42:15  54.5N  159.8W mb=4.9  EMSC   SOUTH OF ALASKA

O: 20OCT2020 02:47:46  54.5N  159.8W Mw=4.6  EMSC   SOUTH OF ALASKA

O: 19OCT2020 22:11:11  54.6N  159.7W mb=4.4  EMSC   SOUTH OF ALASKA

O: 19OCT2020 23:04:24  54.6N  159.6W mb=4.2  EMSC   SOUTH OF ALASKA

O: 20OCT2020 00:00:36  54.6N  159.7W mb=4.9  EMSC   SOUTH OF ALASKA

O: 20OCT2020 03:09:13  54.6N  159.7W ml=4.2  EMSC   SOUTH OF ALASKA

O: 19OCT2020 20:54:40  54.7N  159.8W Mw=7.5  EMSC   SOUTH OF ALASKA

O: 20OCT2020 00:23:19  54.7N  159.8W ml=3.7  EMSC   SOUTH OF ALASKA

O: 20OCT2020 02:57:50  54.7N  159.9W mb=4.1  EMSC   SOUTH OF ALASKA              

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

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

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           

 

No events of M>=2 were located in the northwestern U.S. or western Canada today.

 

ROCKY MOUNTAINS REGION

 

O: 19OCT2020 16:18:27  31.6N  104.3W ML=2.5  EMSC   WESTERN TEXAS                

P: 16OCT2020 127946    32.6N  104.6W 2.0-3.8 BAAAA  SW U.S.A                   

 

O: 19OCT2020 19:16:51  44.3N  114.6W Ml=2.4  EMSC   SOUTHERN IDAHO

O: 19OCT2020 15:45:26  44.5N  115.2W ML=2.6  EMSC   SOUTHERN IDAHO

O: 19OCT2020 13:12:17  44.3N  114.6W ML=2.3  EMSC   SOUTHERN IDAHO               

P: 20OCT2020 127978    44.4N  114.1W 2.0-3.8 AAAAA  Montana/Idaho              

 

O: 19OCT2020 21:01:01  44.5N  111.2W Ml=2.9  EMSC   SOUTHERN IDAHO               

P: 15OCT2020 128005    43.2N  111.0W 2.0-3.9 BBAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O: 19OCT2020 15:24:02  36.5N   98.7W ML=2.3  EMSC   OKLAHOMA                     

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

 

HAWAII

 

O: 19OCT2020 15:25:11  19.3N  155.1W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII     

P: 15OCT2020 127882    19.2N  155.2W 3.0-4.3 BAAAA  Hawaii                     

 

STRONG QUAKE SHAKES SOUTHERN SUMATRA, INDONESIA

 

EARTHQUAKE SUMMARY FOR OCTOBER 18, 2020

 

Earthquakes of M 5.8 and 5.9  (BMG magnitudes) hit the area south of Sumatra today.  BMG reported they were felt with intensity IV-V in the area near Bengkulu, Mukumuku, Tuapejat, Muara Aman, Tais and others. This continues a series of earthquakes in this area over the past four days as noted in previous issues of this summary as:

 

"The M 5.3 south of Sumatra continued a swarm in the area which began with an M 5.4 on October 15, 2020. It is the second largest event in this swarm to date. It occurred near local solar midnight and may have affected by high tidal stresses with the new moon. Forecast 127869 had expected activity in this area south of Sumatra was likely around October 21." (October 17-18, 2020)

 

 

"A series of moderate earthquakes followed the largest earthquake in the world today - an M 5.4 in the Mentawai region south of Sumatra. It was not reported felt in the region. The last earthquake within about 200 km of this epicenter with M>=5.4 was an M 5.4-5.5 on August 15, 2020. These appear to be aftershocks of an M 6.8-6.9 on August 18, 2020. This event occurred on the new moon date of August 18. This summary had noted this at the time as:

 

"The new moon arrived near the time of today's Sumatra earthquakes. This summary had expected strong triggering from this tidal alignment in Indonesia" (August 18-19, October 15-16, 2020)

 

Forecast 127869 had expected this area would be active around October 21. The M 5.9 occurred within about half an hour of local solar noon, a time at which tidal stresses area maximized and was probably promoted by  these stresses. An M 6.9 hit about 200 km southeast of today's epicenter on August 18, 2020 with the new moon but the last earthquake within this radius of larger magnitude was an M 6.1 on February 2, 2019.

 

O: 19OCT2020 07:47:21   3.3S  100.4E Mw=5.5  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 18OCT2020 22:48:49   3.4S  100.3E mb=5.1  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 19OCT2020 07:31:30   3.3S  100.4E Mw=5.9  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

The strongest earthquake in the U.S. or Canada today was an M 4.3-4.8 in the region near Wrigley, Northwest Territories, Canada. This continues activity in the area which has been discussed in the past several issues of this summary as:

 

"The strongest earthquake in the U.S. or Canada  today was an M 4.4 in the Northwest Territories of Canada. The only earthquake in the past six years within about 300 km of this epicenter with M>=4.4 was an M 4.7 on July 2, 2020. Prior to that earthquakes of M 4.4 and 4.5 occurred in March and July, 2014 in this area. The strongest earthquake in this area in the past 30 years was an M 5.6 on June 10, 1990.  Forecast 127772 had expected today's event was likely within about 50 km of this epicenter was likely around October 10." (October 15, 2020)

 

The last earthquake within about 200 km of this epicenter with M>=4.8 occurred as an M 5.3 on September 26, 2011. Forecast 128034 had expected today's activity was likely around October 22 within about 50 km of today's epicenter.

 

O: 18OCT2020 16:46:37  62.3N  124.4W mb=4.3  EMSC   NORTHWEST TERRITORIES, CANADA

O: 18OCT2020 16:46:38  62.1N  124.7W MB=4.8  ECAN OF WRIGLEY, NT                 

P: 22OCT2020 128034    62.1N  124.2W 2.5-3.8 AAAAA  Northwest Terr., Canada    

 

The region of California and the Gulf of California, Mexico saw elevated seismicity today. The strongest earthquake in the area was an M 4.6 in the Gulf of California. This earthquake was probably triggered by high tidal stresses. It occurred within about half an hour of local solar noon, a prime time for tidal stresses associated with the current new moon as noted in previous issues of this summary:

 

"The new moon will arrive on October 16, 2020 at 19:31 UT. Longitudes which are near 115 West and 65 East are at sub-solar and antisolar conditions and will experience the strongest tidal stresses at this time. In the west these include areas of California and western U.S. and Canada and the Gulf of California as well as areas of the southeast Pacific Rise including areas near Easter Island. In the east these include areas of Afghanistan, Iran, India and Pakistan and portions of the Southwest Indian Ocean. These areas are most likely to see tidally triggered strong seismic enhancement in the next week. Many areas are subject to tidal enhancement of seismicity and the coming week should see several strong to major earthquakes in the world. In the past four months six of the seven quakes of M>=6.7 have occurred within several days of the New moon. These included events in the mid-Atlantic; Banda Sea; Sumatra; Alaska Peninsula; Oaxaca, Mexico and the Kermadec Islands. Three of these occurred on the 21st-23rd of the month the other three occurred on the 18th of the month." (October 12-15, 2020)

 

The event in the Gulf of California is the strongest within about 200 km of

this epicenter in nearly two years - since an M 5.3 on January 31, 2019 and prior to that an M 5.5 on October 8, 2018. Forecast 127903 had expected today's event within about 50 km was likely around October 18. This epicenter is located at 144 degrees from the Sumatra quake of August 18, 2020 and was probably promoted by energy from that source.

 

O: 19OCT2020 06:25:24  24.4N  109.0W mb=4.6  EMSC   GULF OF CALIFORNIA           

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

 

Two earthquakes of M 3.5 also occurred today in Southern California. These

were also probably promoted by high tidal stresses. Forecasts 127949 and 127951

had expected this activity was likely around October 16-19.

 

 

NEIC reported the earthquake of M 3.5 in  Baja California was felt with intensity II-III in the area(s) of  Baja California at Puebla, Tecolotes, Mexicali, San Luis and in California at Heber, Holtville, Calexico and El Centro.

 

O: 18OCT2020 19:04:15  32.4N  115.3W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO

O: 18OCT2020 10:31:33  32.5N  115.1W Mw=3.5  EMSC   BAJA CALIFORNIA, MEXICO

O: 18OCT2020 10:41:36  32.5N  115.2W ML=2.0  EMSC   BAJA CALIFORNIA, MEXICO

O: 18OCT2020 10:33:47  32.4N  115.2W Ml=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 16OCT2020 127949    32.4N  115.8W 2.5-4.3 AAAAA  So. California             

 

The earthquake east of Los Angeles, California near Lander is the strongest within about 100 km of that epicenter since an M 4.0 on February 7, 2019.

 

O: 19OCT2020 03:34:43  34.9N  116.3W Mw=3.5  EMSC   SOUTHERN CALIFORNIA           

P: 19OCT2020 127951    35.6N  118.4W 2.5-4.3 AABAA  So. California             

 

NEIC reported this earthquake of M 3.5 in Southern California was felt with intensity II-III in the area(s) of Southern California in Newberry Springs.

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: 19OCT2020 07:06:49  37.3N   72.0E mb=4.2  EMSC   TAJIKISTAN                   

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

 

O: 18OCT2020 17:24:00  34.8N   45.4E ML=4.0  EMSC   IRAN-IRAQ BORDER REGION      

P: 20OCT2020 127960    38.0N   44.0E 3.5-4.8 ACAAA  Turkey                      

 

O: 18OCT2020 20:05:17  33.0N   72.5E ML=3.9  EMSC   PAKISTAN                     

P: 21OCT2020 127944    33.0N   74.0E 3.8-5.1 BAAAA  Pakistan                   

 

O: 18OCT2020 17:24:48  37.4N   45.0E ML=4.0  EMSC   TURKEY-IRAN-IRAQ BORDER REGION

P: 20OCT2020 127960    38.0N   44.0E 3.5-4.8 AAAAA  Turkey                     

 

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

 

INDONESIA AND PHILIPPINES

 

O: 18OCT2020 16:39:14   1.0S  134.3E ML=4.3  EMSC   NEAR N COAST OF PAPUA, INDONES

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

 

O: 19OCT2020 07:31:30   3.3S  100.4E Mw=5.9  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

O: 18OCT2020 10:19:22   4.4S  129.3E mb=4.3  EMSC   BANDA SEA                    

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

 

O: 18OCT2020 14:38:42   7.8S  123.5E mb=4.4  EMSC   BANDA SEA                     

P: 21OCT2020 127857     8.0S  123.0E 4.0-5.3 BAAAA  Flores Island area         

 

O: 18OCT2020 07:03:46   9.4S  114.0E ML=4.4  EMSC   SOUTH OF BALI, INDONESIA     

P: 15OCT2020 127868     9.0S  113.0E 4.0-5.3 BAAAA  So. of Java                

 

O: 19OCT2020 07:47:21   3.3S  100.4E Mw=5.5  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 18OCT2020 22:48:49   3.4S  100.3E mb=5.1  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 19OCT2020 07:31:30   3.3S  100.4E Mw=5.9  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

CENTRAL AND SOUTH AMERICA

 

O: 19OCT2020 03:32     37.3S   73.7W mb=4.0  GUC    BioBio at Concepcion, Lota and

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

 

GUC reported this earthquake was felt with intensity III in  BioBio at Concepcion, Lota and II in Chiguayante, Chile.

 

O: 18OCT2020 16:54     27.4S   70.8W mb=4.3  GUC    Atacama at Copiapo and Tierra

P: 17OCT2020 128062    28.0S   71.0W 4.0-5.5 AAAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity  V in  Atacama at Copiapo and Tierra Amarilla; IV in Caldera and III in Chanaral and Diego de Almagro, Chile.

 

O: 18OCT2020 18:38:55  14.1S   72.8W ML=4.2  EMSC   CENTRAL PERU                 

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

 

O: 19OCT2020 03:24:16  16.3N   86.9W mb=4.5  EMSC   OFFSHORE HONDURAS            

P: 21OCT2020 127888    16.0N   88.0W 3.5-5.2 AAAAA  Nicaragua                  

 

NEIC reported this earthquake of M 4.5 in  Honduras was felt with intensity II-III in the area(s) of  Honduras at Sandy Bay, Roatan, La Ceiba, Corozal, Utila, Pena Blanca, Armenta and Tegucigalpa.

 

O: 18OCT2020 13:20:10  17.9N   67.0W Md=3.0  EMSC   PUERTO RICO REGION           

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

 

O: 18OCT2020 15:49:54  18.4N   71.4W ML=3.4  EMSC   DOMINICAN REPUBLIC           

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

 

O: 18OCT2020 21:36:16  18.6N   69.6W ML=3.2  EMSC   DOMINICAN REPUBLIC           

P: 16OCT2020 127900    20.0N   71.0W 3.0-4.4 ABBAA  Bahamas/No. Caribbean      

 

O: 19OCT2020 01:22:52  21.9S   66.3W mb=4.0  EMSC   POTOSI, BOLIVIA              

O: 18OCT2020 11:36:58  22.1S   63.8W mb=4.3  EMSC   SALTA, ARGENTINA             

P: 17OCT2020 128063    24.0S   69.0W 4.0-5.4 ABCAA  Coast No. Chile            

 

O: 19OCT2020 06:25:24  24.4N  109.0W mb=4.6  EMSC   GULF OF CALIFORNIA           

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

 

O: 18OCT2020 16:54:05  27.3S   70.9W mb=4.8  EMSC   ATACAMA, CHILE               

P: 17OCT2020 128062    28.0S   71.0W 4.0-5.5 AAAAA  Coast Central Chile        

 

NEIC reported this earthquake of M 4.8 in Atacama, Chile was felt with intensity V in the area(s) of Atacama, Chile at Copiapo.

 

O: 19OCT2020 03:32:32  37.3S   74.1W mb=4.2  EMSC   OFFSHORE BIO-BIO, CHILE      

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

 

NEIC reported this earthquake of M 4.2 in Central Chile  was felt with intensity II-III in the area(s) of  Central Chile in Arauco, Bio Bio.

 

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

 

AFRICA AND EUROPE

 

O: 18OCT2020 08:07:15  39.1N   23.5E mb=4.4  EMSC   AEGEAN SEA                   

P: 18OCT2020 127915    39.0N   23.0E 3.0-4.4 AAAAA  Aegean Sea                 

 

NEIC reported this earthquake of M 4.4 in Greece  was felt with intensity II-III in the area(s) of  Greece at Skiathos, Skopeios, Magnisia and in the Dodecanese Islands.

 

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

 

SOUTHWEST PACIFIC

 

O: 18OCT2020 09:42:30  16.7S  177.3W Mw=5.1  EMSC   FIJI REGION                  

P: 18OCT2020 128055    17.0S  177.0W 4.0-5.4 AAAAA  Tonga Islands              

 

O: 18OCT2020 17:18:53  25.0S  178.6E mb=4.2  EMSC   SOUTH OF FIJI ISLANDS        

O: 18OCT2020 17:18:53  25.0S  178.6E mb=4.2  EMSC   SOUTH OF FIJI ISLANDS        

P: 19OCT2020 128072    23.0S  179.0E 4.0-5.4 ABAAA  Tonga/Fiji                 

 

OCEAN RIDGES

 

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

 

 

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: 18OCT2020 18:28:30  35.2N  136.6E ML=4.1  EMSC   WESTERN HONSHU, JAPAN        

P: 17OCT2020 127926    34.0N  136.0E 3.5-4.8 ABAAA  Central/So. Honshu Japan   

 

O: 18OCT2020 12:23:32  42.2N  142.8E mb=4.4  EMSC   HOKKAIDO, JAPAN REGION       

P: 17OCT2020 127970    41.0N  142.0E 3.5-5.3 ABAAA  Hokkaido, Japan            

 

O: 19OCT2020 02:38:16  46.5N  153.3E mb=4.4  EMSC   KURIL ISLANDS                

P: 17OCT2020 128000    45.0N  152.0E 3.5-5.3 ABAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 18OCT2020 19:04:15  32.4N  115.3W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO

O: 18OCT2020 10:31:33  32.5N  115.1W Mw=3.5  EMSC   BAJA CALIFORNIA, MEXICO

O: 18OCT2020 10:41:36  32.5N  115.2W ML=2.0  EMSC   BAJA CALIFORNIA, MEXICO

O: 18OCT2020 10:33:47  32.4N  115.2W Ml=3.0  EMSC   BAJA CALIFORNIA, MEXICO       

P: 16OCT2020 127949    32.4N  115.8W 2.5-4.3 AAAAA  So. California             

 

O: 18OCT2020 17:16:31  33.2N  116.0W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

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

 

O: 19OCT2020 03:34:43  34.9N  116.3W Mw=3.5  EMSC   SOUTHERN CALIFORNIA          

P: 19OCT2020 127951    35.6N  118.4W 2.5-4.3 AABAA  So. California             

 

O: 18OCT2020 17:44:14  36.0N  117.4W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2020 127917    36.0N  117.9W 2.5-4.3 BAAAA  California/Nevada area     

 

O: 19OCT2020 02:34:19  37.6N  118.5W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P: 16OCT2020 127918    37.3N  118.3W 2.5-4.4 BAAAA  California/Nevada area     

 

O: 19OCT2020 07:42:01  38.1N  117.9W ml=2.1  EMSC   NEVADA                       

O: 18OCT2020 18:46:01  38.2N  117.8W ml=2.1  EMSC   NEVADA                       

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

 

O: 18OCT2020 07:01:56  40.4N  124.3W ML=3.0  EMSC   NORTHERN CALIFORNIA          

P: 16OCT2020 127989    40.2N  124.2W 2.5-4.3 AAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.4 in Northern California  was felt with intensity II-III in the area(s) of  Northern California in Fortuna, Loleta and Eureka.

 

ALASKA

 

O: 18OCT2020 23:46:09  57.4N  154.8W ML=3.1  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 16OCT2020 128025    60.3N  153.0W 3.2-4.8 ACAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 18OCT2020 14:58:45  48.2N  121.6W Ml=2.1  EMSC   WASHINGTON                   

P: 19OCT2020 128004    48.9N  122.1W 2.0-3.9 AAAAA  Washington state, U.S.     

 

O: 18OCT2020 16:46:37  62.3N  124.4W mb=4.3  EMSC   NORTHWEST TERRITORIES, CANADA

O: 18OCT2020 16:46:38  62.1N  124.7W MB=4.8  ECAN OF WRIGLEY, NT                 

P: 22OCT2020 128034    62.1N  124.2W 2.5-3.8 AAAAA  Northwest Terr., Canada    

P: 22OCT2020 128034    62.1N  124.2W 2.5-3.8 CAAAA  Northwest Terr., Canada    

 

O: 18OCT2020 23:50:31  48.7N  123.3W Ml=2.4  EMSC   VANCOUVER ISLAND, CANADA REGIO

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

 

ROCKY MOUNTAINS REGION

 

O: 18OCT2020 11:13:04  31.6N  104.3W ML=2.7  EMSC   WESTERN TEXAS                

P: 16OCT2020 127946    32.6N  104.6W 2.0-3.8 AAAAA  SW U.S.A                   

 

O: 18OCT2020 07:34:09  44.3N  115.2W ML=2.5  EMSC   SOUTHERN IDAHO

O: 18OCT2020 11:49:24  44.6N  115.1W Ml=2.8  EMSC   SOUTHERN IDAHO

O: 18OCT2020 07:34:09  44.3N  115.2W ML=2.5  EMSC   SOUTHERN IDAHO               

P: 14OCT2020 127978    44.5N  115.2W 2.0-3.9 BAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 18OCT2020 22:47:53  36.2N   98.4W mb=2.2  EMSC   OKLAHOMA                     

O: 19OCT2020 06:31:43  36.3N   98.2W ML=2.0  EMSC   OKLAHOMA                     

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

 

NEIC reported this earthquake of M 2.7 in Oklahoma  was felt with intensity II-III in the area(s) of  Oklahoma at Isabella.

 

HAWAII

 

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

 

MODERATELY LARGE QUAKE IN SOUTHERN ECUADOR

 

EARTHQUAKE SUMMARY FOR OCTOBER 17, 2020

 

The strongest earthquake in the world today was an M 5.5 off the west coast of northern Peru and Ecuador. NEIC reported it was felt with maximum intensity IV in Piura, Peru at El Alto, Mancora and Talara and in Zorritos Tumbes, Peru.

It occurred near local solar midnight and may have been promoted by strong tidal stresses with the new moon as noted in previous issues of this summary:

 

"The new moon will arrive on October 16, 2020 at 19:31 UT. Longitudes which are near 115 West and 65 East are at sub-solar and antisolar conditions and will experience the strongest tidal stresses at this time. In the west these include areas of California and western U.S. and Canada and the Gulf of California as well as areas of the southeast Pacific Rise including areas near Easter Island. In the east these include areas of Afghanistan, Iran, India and Pakistan and portions of the Southwest Indian Ocean. These areas are most likely to see tidally triggered strong seismic enhancement in the next week. Many areas are subject to tidal enhancement of seismicity and the coming week should see several strong to major earthquakes in the world. In the past four months six of the seven quakes of M>=6.7 have occurred within several days of the New moon. These included events in the mid-Atlantic; Banda Sea; Sumatra; Alaska Peninsula; Oaxaca, Mexico and the Kermadec Islands. Three of these occurred on the 21st-23rd of the month the other three occurred on the 18th of the month." (October 12-15, 2020)

 

It may also have been affected by a C 3.5 solar flare which occurred earlier in the day and was the strongest such observed flare since late May, 2020. Northern Peru lies near the geomagnetic equator where effects of such flares are prominent.

 

The last earthquake in northern Peru within about 200 km of this epicenter with M>=5.5 was an M 5.5 on August 25, 2020 and prior to that an M 5.6 on June 5, 2017. Forecast 127856 had expected today's event in Ecuador was likely around October 16.

 

O: 18OCT2020 06:58:30   3.9S   81.8W Mw=5.5  EMSC   NEAR COAST OF NORTHERN PERU  

P: 16OCT2020 127856     1.0S   81.0W 4.0-5.3 ACAAA  Ecuador                    

 

Other moderately large earthquakes today hit the Pacific-Antarctic Ridge with M 5.4 and Sumatra (M 5.3). The event in the South Pacific is the largest on the Pacific-Antarctic Ridge within about 300 km of this epicenter since an M 5.8 on August 31, 2020 and prior to that an M 5.4 on October 7, 2018. This event is at 101 degrees from the M 6.8 in the central Atlantic of September 18, the largest earthquake in the world since that time and may have been promoted by energy from that source.

 

O: 17OCT2020 10:49:20  54.5S  133.0W Mw=5.4  EMSC   PACIFIC-ANTARCTIC RIDGE       

 

The M 5.3 south of Sumatra continued a swarm in the area which began with an M 5.4 on October 15, 2020. It is the second largest event in this swarm to date.

It occurred near local solar midnight and may have affected by high tidal stresses with the new moon. Forecast 127869 had expected activity in this area south of Sumatra was likely around October 21.

 

O: 17OCT2020 20:21:48   3.2S  100.3E ML=4.0  EMSC   KEP. MENTAWAI REGION, INDONESI

O: 17OCT2020 17:54:59   3.3S  100.4E mb=5.3  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

The strongest earthquake in the U.S. or Canada today was an M 4.1 in the Kodiak region, Alaska. The last earthquake in the Kodiak area of M>=4.0 was an M 4.2 on September 21, 2020 but the last within about 100 km of today's epicenter was an M 5.1 on July 8, 2020. Forecast 128007 had expected today's activity was likely around October 18.

 

O: 17OCT2020 09:17:57  56.2N  154.5W Mw=4.1  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 18OCT2020 128007    54.7N  156.9W 3.5-4.8 ABBAA  Alaska Peninsula           

 

A series of light earthquakes were recorded near Mt. Etna, Sicily, Italy today.

This may be an expansion of the volcanic eruption at Etna which began on October 7, 2020 and has included strong ash emissions. The strongest of today's earthquakes in Sicily occurred near local solar noon and may have been enhanced by high tidal stresses associated with the new moon. Forecast 127972 had expected today's activity was likely in mid-October. This activity is at 103 degrees from the M 6.8 in Atacama, Chile of September 1 and may have been affected by concentrated energy from that source.

 

O: 17OCT2020 08:40:53  37.8N   14.6E ML=2.0  EMSC   SICILY, ITALY

O: 17OCT2020 08:44:54  37.8N   14.6E ML=2.8  EMSC   SICILY, ITALY

O: 17OCT2020 08:44:54  37.8N   14.6E ML=2.8  EMSC   SICILY, ITALY

O: 17OCT2020 09:00:40  37.8N   14.6E ML=2.3  EMSC   SICILY, ITALY

O: 17OCT2020 10:31:09  37.8N   14.6E ML=2.2  EMSC   SICILY, ITALY

O: 17OCT2020 11:13:58  37.8N   14.6E ML=2.4  EMSC   SICILY, ITALY

O: 17OCT2020 11:48:24  37.8N   14.6E ML=2.8  EMSC   SICILY, ITALY

O: 17OCT2020 12:29:14  37.8N   14.6E ML=3.3  EMSC   SICILY, ITALY

O: 17OCT2020 13:07:43  37.8N   14.6E ML=2.2  EMSC   SICILY, ITALY

O: 17OCT2020 13:14:45  37.8N   14.6E ML=2.1  EMSC   SICILY, ITALY

O: 17OCT2020 13:27:34  37.8N   14.6E ML=2.1  EMSC   SICILY, ITALY

O: 17OCT2020 13:55:19  37.8N   14.6E ML=2.2  EMSC   SICILY, ITALY

O: 17OCT2020 15:06:46  37.8N   14.6E ML=2.2  EMSC   SICILY, ITALY

O: 17OCT2020 15:09:07  37.8N   14.6E ML=2.1  EMSC   SICILY, ITALY

O: 17OCT2020 15:59:11  37.8N   14.6E ML=2.7  EMSC   SICILY, ITALY

O: 17OCT2020 20:14:08  37.8N   14.6E ML=2.5  EMSC   SICILY, ITALY

O: 18OCT2020 02:41:14  37.8N   14.6E ML=2.2  EMSC   SICILY, ITALY

O: 18OCT2020 06:02:23  37.8N   14.7E ML=2.8  EMSC   SICILY, ITALY

O: 17OCT2020 12:11:24  37.9N   14.6E ML=2.9  EMSC   SICILY, ITALY

O: 17OCT2020 18:50:20  37.9N   14.7E ML=2.4  EMSC   SICILY, ITALY

O: 18OCT2020 02:15:54  37.9N   14.6E ML=2.9  EMSC   SICILY, ITALY

O: 18OCT2020 06:42:33  37.7N   15.0E ML=2.0  EMSC   SICILY, ITALY                

P: 15OCT2020 127972    40.0N   17.0E 3.0-4.9 BCBAA  Italy                      

 

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: 17OCT2020 15:03:13  23.3N  120.4E mb=4.5  EMSC   TAIWAN                       

O: 17OCT2020 12:07:55  23.3N  120.4E ML=4.2  TAI    Hualien, Taiwan              

O: 17OCT2020 15:03:13  23.3N  120.4E ML=5.2  TAI    Hualien, Taiwan              

O: 17OCT2020 15:05:59  23.3N  120.4E ML=4.7  TAI    Hualien, Taiwan              

P: 15OCT2020 127913    23.0N  122.0E 4.0-5.3 AAAAA  Taiwan                     

P: 17OCT2020 127913    21.0N  120.0E 4.0-5.4 ACAAA  Taiwan                     

 

NEIC reported this earthquake of M 4.4 in  Taiwan was felt with intensity V-VI  in the area(s) of  Taiwan in Tainan, Chiayi; and III-IV in Taichung.

CWB reported the M 5.2 was felt in Taiwan with intensity IV in Tainan, Chiayi, Yunlin; III in Kaohsiung, Changhua; II in Nantou, Taitung, Penghu, Hualien, Taichung, Miaoli, and I in Pingtung, Yilan and Hsinchu Counties.

The M 4.7 and 4.2 were felt with slightly lesser intensity in the same areas.

 

O: 17OCT2020 16:19:45  32.0N   69.1E mb=4.4  EMSC   CENTRAL AFGHANISTAN          

P: 16OCT2020 127944    34.0N   70.0E 3.8-5.1 ABAAA  Pakistan                   

 

O: 18OCT2020 06:14:37  37.3N   71.9E mb=4.4  EMSC   TAJIKISTAN                   

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

 

O: 17OCT2020 22:45:26  38.1N   76.8E mb=4.4  EMSC   SOUTHERN XINJIANG, CHINA     

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

 

O: 17OCT2020 17:21:09  54.1N   86.2E mb=4.7  EMSC   SOUTHWESTERN SIBERIA, RUSSIA 

P: 21OCT2020 128020    50.0N   88.0E 3.0-4.3 BCAAA  So. Siberia                

 

NEIC reported this earthquake of M 4.7 in Siberia, Russia was felt with intensity II-III in the area(s) of Siberia, Russia in Kemerovo at Krasnobrodskiy, Prokopyevsk (IV) and Novokuznetsk.

 

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

 

INDONESIA AND PHILIPPINES

 

O: 17OCT2020 14:24:18   0.0S  130.2E ML=4.3  EMSC   PAPUA REGION, INDONESIA      

O: 18OCT2020 02:19:49   0.2S  130.2E ML=4.1  EMSC   PAPUA REGION, INDONESIA      

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

 

O: 18OCT2020 03:51:09   0.3S  123.0E ML=4.5  EMSC   SULAWESI, INDONESIA          

P: 20OCT2020 127847     0.0N  124.0E 4.0-5.3 AAAAA  Mindanao, Philippines      

 

O: 18OCT2020 06:01:38   2.5N  128.2E mb=4.7  EMSC   HALMAHERA, INDONESIA         

P: 13OCT2020 127846     4.0N  127.0E 4.0-5.5 BBBAA  Halmahera                  

 

O: 17OCT2020 09:13:33   3.0S  128.9E ML=4.2  EMSC   CERAM SEA, INDONESIA         

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

 

O: 17OCT2020 20:21:48   3.2S  100.3E ML=4.0  EMSC   KEP. MENTAWAI REGION, INDONESI

O: 17OCT2020 17:54:59   3.3S  100.4E mb=5.3  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

O: 17OCT2020 08:08:01   3.8S  134.7E mb=4.5  EMSC   PAPUA, INDONESIA             

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

 

O: 17OCT2020 23:26:58   4.5S  102.9E ML=4.3  EMSC   SOUTHERN SUMATRA, INDONESIA  

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

 

O: 17OCT2020 14:58:15   4.6N  125.8E mb=4.6  EMSC   KEPULAUAN SANGIHE, INDONESIA 

P: 17OCT2020 127848     4.0N  126.0E 4.0-5.3 AAAAA  Mindanao, Philippines      

 

O: 17OCT2020 20:58:32   6.1S  122.5E mb=4.5  EMSC   FLORES SEA                   

P: 10OCT2020 127612     7.0S  123.0E 4.0-5.3 CAAAA  Flores Island area         

 

O: 17OCT2020 12:48:06   7.5S  128.5E ML=4.3  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 14OCT2020 127853     6.0S  128.0E 4.0-5.3 BBAAA  Banda Sea                  

 

O: 17OCT2020 12:57:09  10.5N  122.1E ML=4.2  EMSC   PANAY, PHILIPPINES           

P: 21OCT2020 127884    12.0N  122.0E 3.5-4.8 BBAAA  Luzon, Philippines         

 

O: 18OCT2020 05:46:54  11.2N  126.0E mb=4.8  EMSC   SAMAR, PHILIPPINES           

P: 21OCT2020 127884    12.0N  122.0E 3.5-4.8 BACAA  Luzon, Philippines         

 

NEIC reported this earthquake of M 4.8 in the central Philippines was felt with intensity II-III in the area(s) of the central Philippines in Guiuan, Eastern Visayas.

 

O: 18OCT2020 06:07:03  17.5N  145.4E mb=4.5  EMSC   ALAMAGAN REG, N. MARIANA ISLAN

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

 

CENTRAL AND SOUTH AMERICA

 

O: 17OCT2020 22:17:40  10.7S   78.4W ML=4.3  EMSC   NEAR COAST OF CENTRAL PERU   

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

 

O: 17OCT2020 10:46:12  10.9N   63.8W mb=4.5  EMSC   ISLA DE MARGARITA, VENEZUELA R

P: 14OCT2020 127898    11.0N   63.0W 3.4-4.9 BAAAA  Windward Islands           

 

NEIC reported this earthquake of M 4.5 in Northern Venezuela was felt with intensity III-IV in the area(s) of Northern Venezuela  Porlamar, La Asuncion, Chacao and Baruta.

 

O: 18OCT2020 06:58:30   3.9S   81.8W Mw=5.5  EMSC   NEAR COAST OF NORTHERN PERU  

P: 16OCT2020 127856     1.0S   81.0W 4.0-5.3 ACAAA  Ecuador                    

 

O: 17OCT2020 08:18:14  14.4N   92.2W ML=4.1  EMSC   OFFSHORE GUATEMALA           

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

 

O: 17OCT2020 08:29:45  15.0N   94.2W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 13OCT2020 127877    14.0N   94.0W 3.5-5.0 BAAAA  Chiapas, Mexico            

 

O: 17OCT2020 12:31:12  15.7N   95.1W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O: 18OCT2020 03:06:06  15.9N   96.6W ML=4.0  EMSC   OAXACA, MEXICO

O: 17OCT2020 18:32:49  15.6N   97.9W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 18OCT2020 127891    15.0N   97.0W 3.5-5.1 AAAAA  Oaxaca, Mexico             

 

O: 17OCT2020 11:42:18  18.2N   67.2W Md=3.0  EMSC   MONA PASSAGE, PUERTO RICO    

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

 

O: 17OCT2020 19:02:08  18.8N   70.3W ML=3.3  EMSC   DOMINICAN REPUBLIC

O: 17OCT2020 18:55:18  18.9N   70.2W ML=3.1  EMSC   DOMINICAN REPUBLIC

O: 17OCT2020 14:20:31  19.0N   69.3W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION

O: 17OCT2020 15:08:28  19.1N   70.6W ML=3.1  EMSC   DOMINICAN REPUBLIC

O: 17OCT2020 07:24:55  19.7N   70.2W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION

O: 17OCT2020 17:42:37  19.7N   71.1W ML=3.4  EMSC   DOMINICAN REPUBLIC

O: 18OCT2020 02:13:20  19.9N   70.6W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION

O: 18OCT2020 01:58:18  20.0N   70.6W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION

O: 17OCT2020 19:37:37  18.2N   72.1W ML=3.2  EMSC   HAITI REGION                 

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

 

O: 17OCT2020 21:21:35  19.2N   68.9W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P: 13OCT2020 127900    20.0N   69.0W 3.0-4.3 BAAAA  Bahamas/No. Caribbean      

 

O: 18OCT2020 00:57:35  28.3S   68.7W mb=4.5  EMSC   LA RIOJA, ARGENTINA          

P: 18OCT2020 128061    29.0S   68.0W 4.0-5.3 AAAAA  Argentina                  

 

O: 17OCT2020 17:59:30  24.9N  110.8W ML=4.0  EMSC   BAJA CALIFORNIA SUR, MEXICO  

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

 

O: 18OCT2020 00:04:26  31.5S   69.5W mb=4.0  EMSC   SAN JUAN, ARGENTINA          

O: 17OCT2020 19:12:37  30.9S   71.4W ML=4.0  EMSC   COQUIMBO, CHILE              

P: 17OCT2020 128073    31.0S   70.0W 4.0-5.4 AAAAA  Central Chile              

 

AFRICA AND EUROPE

 

O: 18OCT2020 04:36:34  32.2N   16.9W mb=4.2  EMSC   MADEIRA ISLANDS, PORTUGAL REGI

 

O: 17OCT2020 08:40:53  37.8N   14.6E ML=2.0  EMSC   SICILY, ITALY

O: 17OCT2020 08:44:54  37.8N   14.6E ML=2.8  EMSC   SICILY, ITALY

O: 17OCT2020 08:44:54  37.8N   14.6E ML=2.8  EMSC   SICILY, ITALY

O: 17OCT2020 09:00:40  37.8N   14.6E ML=2.3  EMSC   SICILY, ITALY

O: 17OCT2020 10:31:09  37.8N   14.6E ML=2.2  EMSC   SICILY, ITALY

O: 17OCT2020 11:13:58  37.8N   14.6E ML=2.4  EMSC   SICILY, ITALY

O: 17OCT2020 11:48:24  37.8N   14.6E ML=2.8  EMSC   SICILY, ITALY

O: 17OCT2020 12:29:14  37.8N   14.6E ML=3.3  EMSC   SICILY, ITALY

O: 17OCT2020 13:07:43  37.8N   14.6E ML=2.2  EMSC   SICILY, ITALY

O: 17OCT2020 13:14:45  37.8N   14.6E ML=2.1  EMSC   SICILY, ITALY

O: 17OCT2020 13:27:34  37.8N   14.6E ML=2.1  EMSC   SICILY, ITALY

O: 17OCT2020 13:55:19  37.8N   14.6E ML=2.2  EMSC   SICILY, ITALY

O: 17OCT2020 15:06:46  37.8N   14.6E ML=2.2  EMSC   SICILY, ITALY

O: 17OCT2020 15:09:07  37.8N   14.6E ML=2.1  EMSC   SICILY, ITALY

O: 17OCT2020 15:59:11  37.8N   14.6E ML=2.7  EMSC   SICILY, ITALY

O: 17OCT2020 20:14:08  37.8N   14.6E ML=2.5  EMSC   SICILY, ITALY

O: 18OCT2020 02:41:14  37.8N   14.6E ML=2.2  EMSC   SICILY, ITALY

O: 18OCT2020 06:02:23  37.8N   14.7E ML=2.8  EMSC   SICILY, ITALY

O: 17OCT2020 12:11:24  37.9N   14.6E ML=2.9  EMSC   SICILY, ITALY

O: 17OCT2020 18:50:20  37.9N   14.7E ML=2.4  EMSC   SICILY, ITALY

O: 18OCT2020 02:15:54  37.9N   14.6E ML=2.9  EMSC   SICILY, ITALY

O: 18OCT2020 06:42:33  37.7N   15.0E ML=2.0  EMSC   SICILY, ITALY                

P: 15OCT2020 127972    40.0N   17.0E 3.0-4.9 BCBAA  Italy                      

 

O: 17OCT2020 20:31:58  39.1N   23.5E ML=3.8  EMSC   AEGEAN SEA                   

P: 18OCT2020 127915    39.0N   23.0E 3.0-4.4 AAAAA  Aegean Sea                 

 

NEIC reported this earthquake of M 4.0 in  Northern Greece was felt with intensity II-III in the area(s) of  Northern Greece at Skopeios (IV) and Skiathos, Magnisia.

 

O: 17OCT2020 22:02:59  66.1N   17.4W ML=3.1  EMSC   ICELAND REGION               

P: 15OCT2020 128029    66.0N   16.0W 3.0-4.4 AAAAA  Iceland area               

 

 

SOUTHWEST PACIFIC

 

O: 18OCT2020 05:50:12  19.1S  177.3W mb=4.3  EMSC   FIJI REGION                  

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

 

O: 17OCT2020 20:59:29  25.7S  179.8E mb=4.4  EMSC   SOUTH OF FIJI ISLANDS        

P: 19OCT2020 128072    23.0S  179.0E 4.0-5.4 ACAAA  Tonga/Fiji                 

 

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

 

OCEAN RIDGES

 

O: 17OCT2020 10:49:20  54.5S  133.0W Mw=5.4  EMSC   PACIFIC-ANTARCTIC RIDGE      

 

O: 18OCT2020 00:05:12  62.3S   58.1W mb=5.0  EMSC   SOUTH SHETLAND ISLANDS       

P: 14OCT2020 128092    61.0S   58.0W 4.0-5.4 BBAAA  Southern  Ocean            

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 18OCT2020 03:28:35  29.0S  178.4W mb=4.8  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P: 21OCT2020 128065    29.0S  178.0W 4.0-5.4 BAAAA  No. Kermadec Islands       

 

O: 17OCT2020 12:56:33  31.4S  179.7E mb=4.2  EMSC   KERMADEC ISLANDS REGION      

P: 17OCT2020 128077    33.0S  178.0E 4.0-5.3 ABBAA  No. Kermadec Islands        

 

O: 17OCT2020 14:19:36  31.5S  177.7W mb=4.8  EMSC   KERMADEC ISLANDS REGION      

P: 14OCT2020 128081    31.0S  178.0W 4.0-5.3 BAAAA  So. Kermadec Islands       

 

O: 18OCT2020 02:20:13  33.7S  179.3E ML=4.2  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 17OCT2020 128077    33.0S  178.0E 4.0-5.3 AAAAA  No. Kermadec Islands       

 

O: 17OCT2020 21:26:49  41.0S  173.1E ML=3.8  EMSC   COOK STRAIT, NEW ZEALAND     

P: 16OCT2020 128085    42.0S  173.0E 3.0-4.8 AAAAA  So. Island, N.Z.           

 

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: 17OCT2020 14:24:49  32.0N  115.9W ML=2.3  EMSC   BAJA CALIFORNIA, MEXICO      

P: 16OCT2020 127949    32.4N  115.8W 2.5-4.3 AAAAA  So. California             

 

O: 17OCT2020 17:10:16  32.0N  116.1W ML=3.5  EMSC   BAJA CALIFORNIA, MEXICO      

P: 19OCT2020 127948    31.9N  116.3W 2.5-4.3 AAAAA  So. California             

 

O: 18OCT2020 03:11:44  33.7N  116.8W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 14OCT2020 127948    33.0N  116.3W 2.5-4.3 BAAAA  So. California             

 

O: 17OCT2020 09:58:34  35.6N  120.4W ML=2.8  EMSC   CENTRAL CALIFORNIA           

P: 17OCT2020 127943    35.6N  121.3W 2.5-4.3 AAAAA  Off So. California         

 

NEIC reported this earthquake of M 3.0 in Central California was felt with intensity II-III in the area(s) of Central California at Shandon, Atascadero and Templeton.

 

O: 18OCT2020 03:24:31  35.7N  117.5W ML=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 15OCT2020 127917    36.0N  117.9W 2.5-4.3 BAAAA  California/Nevada area     

 

O: 17OCT2020 11:15:45  36.6N  121.3W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2020 127921    36.4N  121.0W 2.5-4.3 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in Central California  was felt with intensity II-III in the area(s) of  Central California at San Juan Bautista and Los Banos.

 

O: 17OCT2020 20:14:51  37.0N  121.6W Md=2.2  EMSC   NORTHERN CALIFORNIA           

P: 17OCT2020 127922    37.1N  121.5W 2.5-4.3 AAAAA  Central California         

 

O: 17OCT2020 10:55:35  37.5N  118.8W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 16OCT2020 127918    37.3N  118.3W 2.5-4.4 AAAAA  California/Nevada area     

 

O: 18OCT2020 06:37:30  38.0N  121.8W Md=2.0  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 14OCT2020 127923    37.8N  122.6W 2.5-4.3 BAAAA  Central California         

 

O: 17OCT2020 13:25:55  38.2N  117.9W ml=2.5  EMSC   NEVADA                       

P: 13OCT2020 127918    37.9N  118.2W 2.5-4.4 BAAAA  California/Nevada area     

 

O: 17OCT2020 18:49:40  38.8N  122.8W Md=2.0  EMSC   NORTHERN CALIFORNIA          

P: 16OCT2020 127924    38.7N  122.7W 2.5-4.3 AAAAA  Central California         

 

O: 17OCT2020 07:30:26  40.5N  126.0W ML=2.9  EMSC   OFF COAST OF NORTHERN CALIFORN

P: 18OCT2020 127990    40.9N  126.3W 2.5-4.3 AAAAA  Off Coast of No. Calif     

 

ALASKA

 

O: 17OCT2020 09:17:57  56.2N  154.5W Mw=4.1  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 18OCT2020 128007    54.7N  156.9W 3.5-4.8 ABBAA  Alaska Peninsula           

 

O: 17OCT2020 19:49:35  65.4N  163.4W ml=3.0  EMSC   NORTHERN ALASKA              

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 17OCT2020 23:06:05  48.9N  122.2W Ml=2.3  EMSC   WASHINGTON                    

P: 19OCT2020 128004    48.9N  122.1W 2.0-3.9 AAAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 17OCT2020 14:28:28  44.0N  114.4W Ml=2.5  EMSC   SOUTHERN IDAHO               

P: 20OCT2020 127978    44.4N  114.1W 2.0-3.8 BAAAA  Montana/Idaho              

 

O: 17OCT2020 07:11:47  44.3N  115.2W Ml=2.0  EMSC   SOUTHERN IDAHO               

P: 14OCT2020 127978    44.5N  115.2W 2.0-3.9 BAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 17OCT2020 07:12:44  35.4N   85.2W Md=2.3  EMSC   EASTERN TENNESSEE            

P: 16OCT2020 127930    35.0N   82.0W 2.0-3.9 AACAA  Kentucky/Tennessee/NC      

 

O: 17OCT2020 21:37:49  36.9N   97.5W mb=2.6  EMSC   OKLAHOMA                     

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

 

HAWAII

 

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

 

MODERATE QUAKE SHAKES MINDORO, PHILIPPINES

 

EARTHQUAKE SUMMARY FOR OCTOBER 16, 2020

 

The strongest earthquake in the world today was an M 5.3-5.4 in Mindoro, Philippines. NEIC reported it was felt with maximum intensity VI in Southern Tagalog at Malig and IV in Batangas and Tagaylay. Intensity II-III was felt in Southern Tagalog at Nasugbu, Taal, Lumil, Dasmariana, Binan, Imus and Magsaysay, Quezon. PHIVOLCS reported this earthquake was felt with intensity V in Looc and Lubang, Occidental Mindoro; IV in Abra de Ilog and Sablayan, Occidental Mindoro; Calapan City, Oriental Mindoro, Lian, Lemeryu and Tingloy, Batangas; Tagaytay City, Mendez, Amadeo and Alfonso, Cavite; III in Puerto Galera, Oriental Mindoro; Paluan, Rizal and Mamburao, Occidental Mindoro; San Pascual, Batangas; Binan and Cabuyao, Laguna; City of Manila; Muntinlupa City, Makati City; Quezon City; Pasig City; Cainta, Rizal; II in Soccoro, Pinamalayan, Bansud, Naujan, and San Teodoro, Oriental Mindoor; San Pascual, Batangas; Indang, Cavite; Marikina City; Malabon City, Meycauauan City, Bulacan; Floridablanca, Pampanga and I in Pola, Oriental Mindoro; Calintaan, Occidental Mindoro. This continues activation of the region of central Philippines which began earlier this week and has included moderate events in Panay, Mindanao, Samar and Mindoro. The event in Mindoro of October 4 was an M 5.6. This activity may be related to the passage of Tropical Storm Nangka which passed through this region several days ago as noted at the time:

 

"TS Nangka (TD 18W) continued today west of Samar, Philippines with winds up to 55 kts. It is expected to track to the west over the next several days reaching Vietnam around October 11. Seismicity in southeast Asia is expected to be enhanced by this storm at landfall." (October 12-15, 2020)

 

Forecast 127884 had expected today's event was likely within about 150 km of this epicenter around October 14. Today's event is at 144 degrees from the M 6.8 of September 18 in the Central Atlantic and was probably promoted by concentrated energy from that source.

 

O: 16OCT2020 20:06:27  13.7N  120.4E Mw=5.3  EMSC   MINDORO, PHILIPPINES         

P: 14OCT2020 127884    13.0N  122.0E 3.5-4.8 AABAA  Luzon, Philippines         

 

The largest earthquake in the U.S. or Canada today was an M 4.0-4.1 in the Queen Charlotte Islands region of Canada. It was reported lightly felt in the epicentral area. This earthquake may have been promoted by tidal stresses associated with the new moon today as described in previous issues of this summary:

 

"The new moon will arrive on October 16, 2020 at 19:31 UT. Longitudes which are near 115 West and 65 East are at sub-solar and antisolar conditions and will experience the strongest tidal stresses at this time. In the west these include areas of California and western U.S. and Canada and the Gulf of California as well as areas of the southeast Pacific Rise including areas near Easter Island. In the east these include areas of Afghanistan, Iran, India and Pakistan and portions of the Southwest Indian Ocean. These areas are most likely to see tidally triggered strong seismic enhancement in the next week. Many areas are subject to tidal enhancement of seismicity and the coming week should see several strong to major earthquakes in the world. In the past four months six of the seven quakes of M>=6.7 have occurred within several days of the New moon. These included events in the mid-Atlantic; Banda Sea; Sumatra; Alaska Peninsula; Oaxaca, Mexico and the Kermadec Islands. Three of these occurred on the 21st-23rd of the month the other three occurred on the 18th of the month." (October 12-15, 2020)

 

The last earthquake within about 100 km of this epicenter with M>=4 was an M 4.2 on August 19, 2020. The last of significantly larger magnitude was an M 5.2 on May 23, 2020. In both cases (as with today's event) these two earthquakes occurred on the date of the new moon suggesting tidal triggering in the region and had been noted as such in this summary, for example:

 

"The largest earthquake in the U.S or Canada today was an M 5.2 west of Vancouver Island, British Columbia, Canada. NEIC reported intensity II-III felt within about 500 km of the epicenter at Ucluelet, and Walnut Grove, British Columbia. This epicenter is at 103 degrees from the M 7.3 of May 5 in the Banda Sea and was probably promoted by energy from that source.

It was associated with the new moon today when tidal stresses were high and was probably enhanced by these tidal stresses" (May 23, 2020)

 

Forecast 128010 had expected today's event was likely within about 100 km around October 17. This epicenter is at 104 degrees from the M 6.8 on October 21, 2020 in the  Banda Sea and may have been affected by concentrated energy from that source.

 

O: 16OCT2020 13:56:33  51.0N  130.7W MB=4.1  ECAN Bella Bella, BC                 

O: 16OCT2020 13:56:33  51.1N  130.3W ML=4.0  EMSC   QUEEN CHARLOTTE ISLANDS REGION

P: 17OCT2020 128010    50.3N  130.2W 3.0-5.1 AAAAA  British Colombia           

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 17OCT2020 01:16:35  24.0N  121.7E ML=4.4  TAI    Hualien, Taiwan              

P: 15OCT2020 127913    23.0N  122.0E 4.0-5.3 AAAAA  Taiwan                     

 

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

 

O: 17OCT2020 01:16:36  36.5N   71.1E mb=4.4  EMSC   HINDU KUSH REGION, AFGHANISTAN

O: 16OCT2020 10:10:52  36.6N   71.3E Mw=4.9  EMSC   HINDU KUSH REGION, AFGHANISTAN

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

 

O: 16OCT2020 08:13:30  29.6N   67.7E mb=4.3  EMSC   PAKISTAN                      

P: 18OCT2020 127910    29.0N   68.0E 3.5-4.8 AAAAA  Pakistan                   

 

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

 

INDONESIA AND PHILIPPINES

 

O: 17OCT2020 05:21:54   0.1S  130.2E ML=4.0  EMSC   PAPUA REGION, INDONESIA      

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

 

O: 17OCT2020 05:44:27   1.7N  126.6E ML=4.6  EMSC   MOLUCCA SEA                  

P: 17OCT2020 127848     4.0N  126.0E 4.0-5.3 ACAAA  Mindanao, Philippines       

 

O: 17OCT2020 00:36:04   3.2S  100.4E Mw=5.1  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

O: 17OCT2020 02:37:33   6.1S  130.5E mb=4.6  EMSC   BANDA SEA                    

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

 

O: 16OCT2020 08:44:31   7.6S  128.6E mb=4.2  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 14OCT2020 127853     6.0S  128.0E 4.0-5.3 ABAAA  Banda Sea                  

 

O: 16OCT2020 20:06:27  13.7N  120.4E Mw=5.3  EMSC   MINDORO, PHILIPPINES         

P: 14OCT2020 127884    13.0N  122.0E 3.5-4.8 AABAA  Luzon, Philippines         

 

 

CENTRAL AND SOUTH AMERICA

 

O: 16OCT2020 16:05:00  14.5N   93.8W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 16OCT2020 18:58:27  15.3N   94.4W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 17OCT2020 06:07:14  15.3N   94.7W ML=4.1  EMSC   OFF COAST OF OAXACA, MEXICO

O: 16OCT2020 20:23:58  15.6N   94.0W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 16OCT2020 18:00:53  14.4N   93.8W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

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

 

O: 16OCT2020 07:47:29  15.6N   97.5W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 18OCT2020 127891    15.0N   97.0W 3.5-5.1 AAAAA  Oaxaca, Mexico             

 

O: 17OCT2020 04:16:10  15.7S   74.9W ML=4.1  EMSC   NEAR COAST OF SOUTHERN PERU  

P: 16OCT2020 128044    15.0S   76.0W 4.0-5.4 AAAAA  Central Peru               

 

O: 17OCT2020 04:46:26  16.5S   73.4W ML=4.2  EMSC   NEAR COAST OF SOUTHERN PERU  

P: 14OCT2020 128052    16.0S   73.0W 4.0-5.4 BAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 4.7 in Central Peru  was felt with intensity II-III in the area(s) of  Central Peru at Camana, Arequipa.

 

O: 16OCT2020 18:34:14  18.0N   66.8W ML=3.1  EMSC   PUERTO RICO REGION           

P: 14OCT2020 127893    18.0N   66.0W 3.4-4.8 AAAAA  Puerto Rico                

 

O: 16OCT2020 10:08:04  18.6N   69.5W ML=3.1  EMSC   DOMINICAN REPUBLIC

O: 16OCT2020 23:24:43  18.7N   69.4W ML=3.4  EMSC   DOMINICAN REPUBLIC

O: 16OCT2020 13:01:14  18.5N   69.2W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P: 13OCT2020 127900    20.0N   69.0W 3.0-4.3 BBAAA  Bahamas/No. Caribbean      

 

O: 17OCT2020 03:53:05  22.6S   70.4W mb=4.3  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

P: 17OCT2020 128059    21.0S   71.0W 4.0-5.3 ABAAA  Argentina                  

 

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

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O: 17OCT2020 05:19:09  19.4S  173.3W mb=4.9  EMSC   TONGA                        

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

 

O: 16OCT2020 19:05:01  23.3S  179.1E mb=4.7  EMSC   SOUTH OF FIJI ISLANDS        

P: 19OCT2020 128072    23.0S  179.0E 4.0-5.4 BAAAA  Tonga/Fiji                 

 

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

 

OCEAN RIDGES

 

O: 16OCT2020 11:12:32  55.4S   28.2W mb=4.7  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 18OCT2020 128091    56.0S   27.0W 4.0-5.6 AAAAA  So. Sandwich Islands       

 

O: 17OCT2020 04:32:03  73.8N    8.6E Mw=4.5  EMSC   GREENLAND SEA                

P: 19OCT2020 128038    79.0N    7.0E 4.0-5.3 ACAAA  Arctic Ocean Region        

 

O: 16OCT2020 21:30:59  62.1S   57.8W mb=4.7  EMSC   SOUTH SHETLAND ISLANDS       

O: 16OCT2020 12:06:08  62.4S   58.6W mb=4.9  EMSC   SOUTH SHETLAND ISLANDS       

P: 14OCT2020 128092    61.0S   58.0W 4.0-5.4 ABAAA  Southern  Ocean            

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 16OCT2020 12:40:07  34.5S  179.9E ML=3.5  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 15OCT2020 128078    35.0S  178.0E 4.0-5.3 AABAA  No. Kermadec Islands       

 

O: 17OCT2020 04:36:23  37.4S  177.9E ML=4.1  EMSC   OFF E. COAST OF N. ISLAND, N.Z

O: 17OCT2020 04:36:23  37.4S  177.9E ML=4.1  GEONET reported felt b

P: 19OCT2020 128078    37.0S  178.0E 3.0-4.3 AAAAA  North Island, N.Z.         

 

GEONET reported this earthquake was felt by 13 people with weak intensity by 11 and light intensity by 2 persons and moderate intensity by none. Strong shaking was felt by 0 with none feeling the quake with severe and none with extreme intensity.

 

JAPAN AND KURIL ISLANDS

 

O: 16OCT2020 08:34:30  36.8N  140.6E ML=3.8  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 16OCT2020 127942    36.0N  142.0E 4.0-5.3 AAAAA  Off East Coast Honshu      

 

O: 17OCT2020 04:00:30  37.0N  138.6E ML=3.9  EMSC   NEAR WEST COAST OF HONSHU, JAP

P: 18OCT2020 127937    35.0N  139.0E 3.5-4.9 ABAAA  No. Honshu, Japan          

 

O: 17OCT2020 04:48:06  45.4N  149.8E mb=5.2  EMSC   KURIL ISLANDS                 

P: 18OCT2020 127971    44.0N  150.0E 3.5-5.3 ABAAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 16OCT2020 07:25:56  31.5N  115.5W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO      

P: 19OCT2020 127948    31.9N  116.3W 2.5-4.3 BAAAA  So. California             

 

O: 16OCT2020 20:56:29  33.1N  115.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA          

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

 

O: 16OCT2020 18:28:00  33.4N  116.4W ML=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 14OCT2020 127948    33.0N  116.3W 2.5-4.3 AAAAA  So. California             

 

O: 16OCT2020 12:47:37  34.5N  117.9W ML=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 15OCT2020 127951    34.6N  118.4W 2.5-4.3 AAAAA  So. California             

 

O: 16OCT2020 09:00:24  35.8N  117.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 15OCT2020 127917    36.0N  117.9W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 16OCT2020 22:28:07  35.9N  115.1W ml=2.0  EMSC   NEVADA                       

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

 

O: 17OCT2020 06:29:34  36.0N  120.6W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P: 14OCT2020 127922    36.6N  120.7W 2.5-4.3 BAAAA  Central California         

 

O: 16OCT2020 14:34:02  38.2N  117.8W ml=2.2  EMSC   NEVADA                       

P: 13OCT2020 127918    37.9N  118.2W 2.5-4.4 BAAAA  California/Nevada area     

 

O: 16OCT2020 09:54:28  38.8N  122.8W Md=2.1  EMSC   NORTHERN CALIFORNIA          

O: 16OCT2020 20:50:52  38.8N  122.8W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 16OCT2020 127924    38.7N  122.7W 2.5-4.3 AAAAA  Central California         

 

O: 16OCT2020 15:25:23  39.7N  119.9W ml=2.3  EMSC   NEVADA                        

O: 16OCT2020 20:29:05  39.7N  119.9W ml=2.4  EMSC   NEVADA                       

P: 16OCT2020 127919    39.1N  119.6W 2.5-4.3 AAAAA  California/Nevada area     

 

 

ALASKA

 

O: 17OCT2020 01:14:25  50.6N  178.4E ML=3.2  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 15OCT2020 128019    51.0N  178.0E 4.0-5.5 AAAAA  Rat Islands                

 

O: 17OCT2020 02:04:34  56.0N  149.8W ML=3.0  EMSC   GULF OF ALASKA               

P: 17OCT2020 128032    56.0N  149.0W 3.0-4.5 AAAAA  Northern Alaska            

 

O: 16OCT2020 10:39:14  69.5N  144.4W ml=3.3  EMSC   NORTHERN ALASKA              

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

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 16OCT2020 13:56:33  51.0N  130.7W MB=4.1  ECAN Bella Bella, BC                

O: 16OCT2020 13:56:33  51.1N  130.3W ML=4.0  EMSC   QUEEN CHARLOTTE ISLANDS REGION

P: 17OCT2020 128010    50.3N  130.2W 3.0-5.1 AAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 16OCT2020 10:20:30  44.3N  115.2W Ml=2.4  EMSC   SOUTHERN IDAHO               

P: 14OCT2020 127978    44.5N  115.2W 2.0-3.9 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 16OCT2020 20:03:38  36.1N   97.6W ML=2.0  EMSC   OKLAHOMA                     

O: 16OCT2020 12:25:34  36.4N   97.4W mb=2.8  EMSC   OKLAHOMA                     

O: 16OCT2020 16:32:40  36.7N   98.8W ML=2.0  EMSC   OKLAHOMA                     

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

 

NEIC reported this earthquake of M 2.8 in  Oklahoma was felt with intensity II-III in the area(s) of  Oklahoma at Ponca City and Barnsdall.

 

HAWAII

 

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

 

MODERATE SWARM SOUTH OF SUMATRA

 

EARTHQUAKE SUMMARY FOR OCTOBER 15, 2020

 

A series of moderate earthquakes followed the largest earthquake in the world today - an M 5.4 in the Mentawai region south of Sumatra. It was not reported felt in the region. The last earthquake within about 200 km of this epicenter with M>=5.4 was an M 5.4-5.5 on August 15, 2020. These appear to be aftershocks of an M 6.8-6.9 on August 18, 2020. This event occurred on the new moon date of August 18. This summary had noted this at the time as:

 

"The new moon arrived near the time of today's Sumatra earthquakes. This summary had expected strong triggering from this tidal alignment in Indonesia" (August 18-19, 2020)

 

Forecast 127869 had expected today's event in this region  was likely in mid-October. Today's epicenter is located at 100 degrees from the M 7.8 in the Alaska Peninsula event of July 22 and at 147 degrees from the Atacama, Chile M 6.8 of September 1 and may have been promoted by concentrated energy from those sources.

 

O: 15OCT2020 10:34:10   3.3S  100.3E mb=4.9  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 15OCT2020 22:06:27   3.4S  100.2E mb=4.5  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 15OCT2020 09:41:17   3.2S  100.4E Mw=5.4  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

A moderate earthquake of M 4.0-4.3 in the Strait of Gibraltar, Spain today was followed by an M 2.9 aftershock. NEIC reported this earthquake of M 4.3 in Spain was felt with intensity II-III in the area(s) of Spain at Cortes de al Frontera and Estebona, Malaga. This is the strongest earthquake within about 150 km of this epicenter in nearly a year. The last such event of M>=4 was an M 4.5 on October 25, 2019. Forecast 127932 had expected today's event within this region was likely around October 15. Today's earthquake occurred within about half an hour of local solar midnight and was likely promoted by strong tidal stresses associated with the new moon which arrives today as noted in previous issues of this summary as:

 

"The new moon will arrive on October 16, 2020 at 19:31 UT. Longitudes which are near 115 West and 65 East are at sub-solar and antisolar conditions and will experience the strongest tidal stresses at this time. In the west these include areas of California and western U.S. and Canada and the Gulf of California as well as areas of the southeast Pacific Rise including areas near Easter Island. In the east these include areas of Afghanistan, Iran, India and Pakistan and portions of the Southwest Indian Ocean. These areas are most likely to see tidally triggered strong seismic enhancement in the next week. Many areas are subject to tidal enhancement of seismicity and the coming week should see several strong to major earthquakes in the world. In the past four months six of the seven quakes of M>=6.7 have occurred within several days of the New moon. These included events in the mid-Atlantic; Banda Sea; Sumatra; Alaska Peninsula; Oaxaca, Mexico and the Kermadec Islands. Three of these occurred on the 21st-23rd of the month the other three occurred on the 18th of the month." (October 12-15, 2020)

 

This activity is at 104 degrees from the Sumatra earthquakes earlier in the day and may have been promoted by energy from that source.

 

O: 15OCT2020 10:58:19  36.6N    5.5W ML=2.9  EMSC   STRAIT OF GIBRALTAR          

O: 16OCT2020 00:58:51  36.7N    5.4W ML=4.0  EMSC   STRAIT OF GIBRALTAR          

O: 16OCT2020 00:58:51  36.7N    5.4W ML=4.3  ANSS   STRAIT OF GIBRALTAR          

P: 15OCT2020 127932    36.0N    4.0W 3.5-4.8 AAAAA  Morocco/Spain              

 

The largest earthquake in the U.S. or Canada today was an M 4.0-4.2 in Southern Alaska. NEIC reported it was felt with maximum intensity V in Alaska at Indian and IV in Fort Richardson and II-III in Eagle River, Anchorage, Girdwood, Elmendorf AFB. The only earthquake within about 150 km of this epicenter in the past year was an M 4.2 on June 18, 2020. The last of larger magnitude in this area was an M 5.2 on September 17, 2019. Forecast 128028 had expected today's event was likely around October 16.

 

O: 15OCT2020 16:05:15  61.2N  149.3W Mw=4.2  EMSC   SOUTHERN ALASKA              

P: 16OCT2020 128028    62.7N  149.3W 3.2-4.9 ABAAA  Central Alaska             

 

Earthquakes in Alabama and Oklahoma today may also have been promoted by strong tidal stresses. The event in Oklahoma of M 2.2 occurred within about 15 minutes of local solar noon while an M 2.5 in Alabama occurred near local solar midnight, prime times for maximum tidal effects on seismicity. Forecast 127707 had expected the event in Alabama was likely in mid-October within about 100 km of this epicenter. An M 2.9 last occurred near today's Alabama event on June 25, 2020 and April 24, 2019.

 

NEIC reported this earthquake of M 2.6 in Alabama  was felt with intensity II-III in the area(s) of  Alabama at Vernon, Crane Hill and Pelham; in Starkville, Mississippi, Knoxville, Tennessee and Haworth, Oklahoma.

 

O: 15OCT2020 07:51:00  33.7N   88.0W Md=2.5  EMSC   ALABAMA                       

P:  9OCT2020 127707    33.0N   87.0W 2.0-3.9 CAAAA  Southeast U.S.             

 

The event in Oklahoma was not unusual and had been expected in forecast 127957.

 

O: 15OCT2020 18:14:53  36.5N   97.2W ML=2.2  EMSC   OKLAHOMA                      

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

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: 15OCT2020 20:12:53  53.1N   88.0E mb=4.3  EMSC   SOUTHWESTERN SIBERIA, RUSSIA 

P: 21OCT2020 128020    50.0N   88.0E 3.0-4.3 CCAAA  So. Siberia                

 

O: 15OCT2020 13:32:59  54.8N  111.7E mb=4.5  EMSC   LAKE BAYKAL REGION, RUSSIA   

 

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

 

INDONESIA AND PHILIPPINES

O: 15OCT2020 16:52:41   0.5S   98.7E mb=4.4  EMSC   KEPULAUAN BATU, INDONESIA    

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

 

O: 15OCT2020 15:12:18   1.8S  133.4E ML=4.0  EMSC   PAPUA, INDONESIA             

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

 

O: 15OCT2020 10:47:48   2.2N  127.7E ML=4.3  EMSC   MOLUCCA SEA                  

P: 13OCT2020 127846     4.0N  127.0E 4.0-5.5 ABAAA  Halmahera                  

 

O: 15OCT2020 09:41:17   3.2S  100.4E Mw=5.4  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

O: 15OCT2020 15:19:20   5.2N  127.1E mb=4.5  EMSC   PHILIPPINE ISLANDS REGION    

P: 13OCT2020 127846     4.0N  127.0E 4.0-5.5 ABAAA  Halmahera                  

 

O: 15OCT2020 08:51:39   7.0N  126.0E ML=4.0  EMSC   MINDANAO, PHILIPPINES        

P: 11OCT2020 127599     7.0N  126.0E 4.0-5.3 BAAAA  Central Philippines        

 

 

 

O: 16OCT2020 00:27:43  10.5N  122.2E ML=4.5  EMSC   PANAY, PHILIPPINES

O: 16OCT2020 00:32:45  10.5N  122.3E mb=4.8  EMSC   PANAY, PHILIPPINES

O: 16OCT2020 00:41:59  10.5N  122.0E ML=4.4  EMSC   PANAY, PHILIPPINES

O: 15OCT2020 14:48:15  10.5N  122.1E ML=4.1  EMSC   PANAY, PHILIPPINES           

P: 21OCT2020 127884    12.0N  122.0E 3.5-4.8 CBAAA  Luzon, Philippines         

 

O: 15OCT2020 10:34:10   3.3S  100.3E mb=4.9  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 15OCT2020 22:06:27   3.4S  100.2E mb=4.5  EMSC   KEP. MENTAWAI REGION, INDONESIA

O: 15OCT2020 09:41:17   3.2S  100.4E Mw=5.4  EMSC   KEP. MENTAWAI REGION, INDONESI

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

 

CENTRAL AND SOUTH AMERICA

 

O: 16OCT2020 04:36:01  14.5N   93.9W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 15OCT2020 17:51:58  14.6N   93.8W ML=4.6  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 13OCT2020 127877    14.0N   94.0W 3.5-5.0 AAAAA  Chiapas, Mexico            

 

O: 15OCT2020 21:40:56  15.3N   89.1W Mw=4.1  EMSC   GUATEMALA                    

P: 21OCT2020 127888    16.0N   88.0W 3.5-5.2 CAAAA  Nicaragua                  

 

O: 15OCT2020 20:21:08  15.5N   94.8W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 10OCT2020 127630    15.0N   95.0W 3.5-5.1 BAAAA  Chiapas, Mexico            

P: 13OCT2020 127877    14.0N   94.0W 3.5-5.0 ABAAA  Chiapas, Mexico            

 

O: 15OCT2020 18:12:43  15.6N   96.2W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 18OCT2020 127891    15.0N   97.0W 3.5-5.1 BAAAA  Oaxaca, Mexico             

 

O: 15OCT2020 19:50:37  16.3N   98.2W ML=4.1  EMSC   OAXACA, MEXICO               

P:  7OCT2020 127646    16.0N   98.0W 3.5-5.0 CAAAA  Oaxaca, Mexico             

 

O: 15OCT2020 13:44:39  17.3N   94.7W ML=4.1  EMSC   VERACRUZ, MEXICO             

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

 

O: 15OCT2020 20:36:41  17.5N   97.4W ML=4.0  EMSC   OAXACA, MEXICO               

P: 14OCT2020 127891    17.0N   96.0W 3.5-5.0 AABAA  Oaxaca, Mexico             

 

O: 15OCT2020 19:49:29  17.9N   67.0W Md=3.0  EMSC   PUERTO RICO REGION

O: 16OCT2020 05:51:02  18.0N   66.9W ML=3.3  EMSC   PUERTO RICO

O: 15OCT2020 18:06:31  17.8N   67.0W Mw=3.8  EMSC   PUERTO RICO REGION           

P: 14OCT2020 127893    18.0N   66.0W 3.4-4.8 AAAAA  Puerto Rico                

 

NEIC reported this earthquake of M 3.8 in Southwestern Puerto Rico  was felt with intensity II-III in the area(s) of  Southwestern Puerto Rico in Guanica, Lajas, Sabana Grande, San German, Cabo Rojo, Guayanilla, Mayaguez, Adjuntas, Ponce and Anasco. 

 

O: 15OCT2020 18:25:31  18.2N  100.9W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 19OCT2020 127886    17.0N  102.0W 3.5-5.2 BBAAA  Michoacan, Mexico          

 

O: 15OCT2020 15:13:15  18.4N   69.1W ML=3.2  EMSC   DOMINICAN REPUBLIC           

P: 13OCT2020 127900    20.0N   69.0W 3.0-4.3 ABAAA  Bahamas/No. Caribbean      

 

O: 15OCT2020 09:41:09  20.0N   70.7W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION

O: 15OCT2020 14:41:33  20.3N   70.8W ML=3.4  EMSC   DOMINICAN REPUBLIC REGION

O: 15OCT2020 08:09:00  20.4N   71.0W ML=3.4  EMSC   DOMINICAN REPUBLIC REGION

O: 15OCT2020 23:27:45  18.7N   70.9W ML=3.3  EMSC   DOMINICAN REPUBLIC           

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

P: 16OCT2020 127900    20.0N   71.0W 3.0-4.4 AAAAA  Bahamas/No. Caribbean      

 

O: 16OCT2020 06:34:48  19.0N  108.3W ML=4.2  EMSC   REVILLA GIGEDO ISLANDS REGION

P:  8OCT2020 127656    20.0N  109.0W 3.5-4.8 CAAAA  Gulf of California         

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

 

O: 16OCT2020 01:35:47  20.8S   69.1W mb=4.1  EMSC   TARAPACA, CHILE              

P: 15OCT2020 128063    21.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

 

AFRICA AND EUROPE

 

O: 15OCT2020 10:58:19  36.6N    5.5W ML=2.9  EMSC   STRAIT OF GIBRALTAR          

O: 16OCT2020 00:58:51  36.7N    5.4W ML=4.0  EMSC   STRAIT OF GIBRALTAR          

P: 15OCT2020 127932    36.0N    4.0W 3.5-4.8 AAAAA  Morocco/Spain              

 

O: 16OCT2020 05:42:24  61.6N    3.3E ML=3.0  EMSC   NORWEGIAN SEA                

 

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

 

SOUTHWEST PACIFIC

 

O: 16OCT2020 06:25:45  11.7S  166.8E mb=4.7  EMSC   SANTA CRUZ ISLANDS           

P: 18OCT2020 128057    11.0S  167.0E 4.0-5.4 AAAAA  Vanuatu Islands            

 

O: 15OCT2020 22:41:37  20.8S  177.7W mb=4.2  EMSC   FIJI REGION                  

P:  6OCT2020 127804    20.0S  178.0W 4.0-5.3 CAAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O: 16OCT2020 00:08:22   8.1N   38.0W mb=5.0  EMSC   CENTRAL MID-ATLANTIC RIDGE   

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 15OCT2020 14:09:31  31.2S  177.9W mb=4.7  EMSC   KERMADEC ISLANDS REGION      

O: 15OCT2020 07:00:17  31.5S  177.6W mb=5.1  EMSC   KERMADEC ISLANDS REGION      

P: 14OCT2020 128081    31.0S  178.0W 4.0-5.3 AAAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 15OCT2020 15:20:04  33.9N  136.9E mb=4.0  EMSC   NEAR S. COAST OF WESTERN HONSH

P: 17OCT2020 127926    34.0N  136.0E 3.5-4.8 AAAAA  Central/So. Honshu Japan   

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 15OCT2020 21:13:21  33.1N  115.6W ML=2.2  EMSC   SOUTHERN CALIFORNIA          

O: 15OCT2020 11:54:19  33.1N  115.6W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 14OCT2020 127948    33.0N  116.3W 2.5-4.3 AAAAA  So. California             

P: 16OCT2020 127949    32.4N  115.8W 2.5-4.3 AAAAA  So. California             

 

O: 16OCT2020 03:46:28  35.9N  117.6W ML=2.1  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2020 127917    36.0N  117.9W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 16OCT2020 04:32:00  36.9N  121.6W Md=2.3  EMSC   CENTRAL CALIFORNIA           

O: 15OCT2020 15:17:03  37.0N  121.6W Md=2.5  EMSC   NORTHERN CALIFORNIA          

P: 17OCT2020 127922    37.1N  121.5W 2.5-4.3 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.5 in Central California  was felt with intensity II-III in the area(s) of  Central California at Gilroy, Watsonville, San Juan Bautista, Morgan Hill, Los Banos, Mountain View, Fremont, San Ramon.

 

O: 15OCT2020 19:31:35  37.3N  118.1W ml=2.3  EMSC   CENTRAL CALIFORNIA           

P: 16OCT2020 127918    37.3N  118.3W 2.5-4.4 AAAAA  California/Nevada area      

 

O: 15OCT2020 14:52:04  38.5N  118.0W ml=2.2  EMSC   NEVADA                       

P: 13OCT2020 127918    37.9N  118.2W 2.5-4.4 AAAAA  California/Nevada area     

 

O: 16OCT2020 06:35:21  39.2N  119.6W ML=2.7  EMSC   NEVADA                       

P: 16OCT2020 127919    39.1N  119.6W 2.5-4.3 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.6 in western Nevada  was felt with intensity II-III in the area(s) of  western Nevada at Carson City and Dayton.

 

O: 15OCT2020 15:19:18  40.1N  123.8W Md=2.1  EMSC   NORTHERN CALIFORNIA          

O: 15OCT2020 12:45:33  40.9N  123.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

 

ALASKA

 

O: 15OCT2020 11:40:35  56.1N  149.8W ml=3.1  EMSC   GULF OF ALASKA

O: 15OCT2020 09:56:09  56.3N  148.9W ml=3.5  EMSC   GULF OF ALASKA

O: 15OCT2020 14:53:46  56.0N  149.8W ml=3.4  EMSC   GULF OF ALASKA               

P: 17OCT2020 128032    56.0N  149.0W 3.0-4.5 AAAAA  Northern Alaska            

 

O: 16OCT2020 02:34:53  61.0N  151.4W ML=3.3  EMSC   KENAI PENINSULA, ALASKA      

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

 

O: 15OCT2020 16:05:15  61.2N  149.3W Mw=4.2  EMSC   SOUTHERN ALASKA              

P: 16OCT2020 128028    62.7N  149.3W 3.2-4.9 ABAAA  Central Alaska              

 

O: 16OCT2020 06:01:29  65.3N  163.0W ML=3.0  EMSC   NORTHERN ALASKA              

 

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 15OCT2020 01:11:01  62.7N  125.4W MB=3.6  ECAN Wrigley, NT                    

P: 10OCT2020 127772    62.1N  124.2W 2.5-3.9 BAAAA  Northwest Terr., Canada    

 

ROCKY MOUNTAINS REGION

 

O: 16OCT2020 05:43:07  31.7N  104.1W mb=2.6  EMSC   WESTERN TEXAS                

P: 16OCT2020 127946    32.6N  104.6W 2.0-3.8 AAAAA  SW U.S.A                   

 

O: 15OCT2020 19:20:18  39.7N  110.7W ML=2.5  EMSC   UTAH                         

O: 15OCT2020 13:53:40  38.2N  112.3W Ml=2.2  EMSC   UTAH                         

P: 13OCT2020 127962    37.0N  112.8W 2.0-3.8 ABAAA  Utah area                  

P: 21OCT2020 127962    38.6N  112.7W 2.0-3.9 CAAAA  Utah area                  

 

O: 15OCT2020 16:21:08  44.3N  115.0W Ml=2.2  EMSC   SOUTHERN IDAHO               

O: 15OCT2020 22:29:08  44.3N  115.1W ML=2.7  EMSC   SOUTHERN IDAHO               

P: 14OCT2020 127978    44.5N  115.2W 2.0-3.9 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 15OCT2020 07:51:00  33.7N   88.0W Md=2.5  EMSC   ALABAMA                      

P:  9OCT2020 127707    33.0N   87.0W 2.0-3.9 CAAAA  Southeast U.S.             

 

O: 16OCT2020 01:17:55  35.1N   96.3W ML=2.1  EMSC   OKLAHOMA                     

P: 14OCT2020 127956    35.0N   96.0W 2.0-3.8 AAAAA  Southern Plains            

 

O: 15OCT2020 18:14:53  36.5N   97.2W ML=2.2  EMSC   OKLAHOMA                     

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

 

O: 16OCT2020 02:42:26  39.0N   99.6W mb=2.5  EMSC   KANSAS                       

P:  7OCT2020 127709    39.0N   99.0W 2.0-3.8 CAAAA  Southern Plains            

 

O: 14OCT2020 14:01:29  71.4N   79.2W MB=2.5  ECAN Pond Inlet, NU                 

P:  9OCT2020 127777    71.0N   75.0W 2.5-3.8 BAAAA  Baffin/Davis Strait Canada 

 

O: 14OCT2020 13:48:53  49.6N   82.4W MB=3.6  ECAN Kapuskasing, ON. Felt          

P:  7OCT2020 127737    46.0N   81.0W 2.0-3.9 CCAAA  Ohio/Lake Erie             

 

HAWAII

 

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

 

 

 

 

 

 

 

 

 

QUIET SEISMIC CONDITIONS CONTINUE

 

EARTHQUAKE SUMMARY FOR OCTOBER 14, 2020

 

Global seismicity remained at quiet conditions today with the largest earthquake

recorded an M 5.0 in Central Chile. GUC reported this earthquake was felt with intensity III in  Coquimbo at La Serena and Paiguano and II in Rio Hurtado, Chile. NEIC reported this earthquake of M 4.9 in San Juan, Argentina  was felt with intensity II-III in the area(s) of  San Juan, Argentina at San Juan, Mendoza, Rio Tercero and Buenos Aires and in Santiago, Chile.  The M 4.5 was reported felt with intensity V in San Juan, Argentina. The last event of M>=5 within about 150 km of this epicenter was an M 5.1 on December 9, 2019. The last of larger magnitude was an M 5.6 on May 20, 2019. Forecast 128073 had expected today's event within about 100 km of this epicenter was likely around October 17. This epicenter is at 144 degrees from the M 6.8 in Sumatra of August 18, 2020 and was probably promoted by energy from that source.

 

O: 15OCT2020 02:20     31.5S   69.2W mb=5.0  GUC    Coquimbo at La Serena and Paig

P: 17OCT2020 128073    31.0S   70.0W 4.0-5.4 AAAAA  Central Chile              

 

O: 14OCT2020 23:18:26  31.8S   68.1W Mw=4.5  EMSC   SAN JUAN, ARGENTINA          

P: 17OCT2020 128073    31.0S   70.0W 4.0-5.4 BABAA  Central Chile              

 

The strongest earthquake in the U.S. or Canada  today was an M 4.4 in the Northwest Territories of Canada. The only earthquake in the past six years within about 300 km of this epicenter with M>=4.4 was an M 4.7 on July 2, 2020. Prior to that earthquakes of M 4.4 and 4.5 occurred in March and July, 2014 in this area. The strongest earthquake in this area in the past 30 years was an M 5.6 on June 10, 1990.  Forecast 127772 had expected today's event was likely within about 50 km of this epicenter was likely around October 10.

 

O: 14OCT2020 09:06:56  62.2N  124.4W mb=4.1  EMSC   NORTHWEST TERRITORIES, CANADA

O: 14OCT2020 09:06:58  62.2N  124.6W MB=4.3  ECAN Wrigley, NT                    

P: 10OCT2020 127772    62.1N  124.2W 2.5-3.9 AAAAA  Northwest Terr., Canada    

 

 

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: 14OCT2020 11:06:17  27.3N   54.5E mb=4.6  EMSC   SOUTHERN IRAN                

P: 15OCT2020 127912    28.0N   54.0E 3.5-4.9 AAAAA  So. Iran/Persian Gulf      

 

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

 

INDONESIA AND PHILIPPINES

 

O: 14OCT2020 20:16:27   1.0N  126.8E mb=4.7  EMSC   MOLUCCA SEA                  

P: 20OCT2020 127847     0.0N  124.0E 4.0-5.3 CACAA  Mindanao, Philippines      

 

O: 14OCT2020 08:14:47   2.4N  128.4E ML=4.0  EMSC   HALMAHERA, INDONESIA         

P: 13OCT2020 127846     4.0N  127.0E 4.0-5.5 ABBAA  Halmahera                  

 

O: 15OCT2020 04:59:51   4.0N   95.8E mb=4.9  EMSC   OFF W COAST OF NORTHERN SUMATR

P: 17OCT2020 127849     5.0N   94.0E 4.0-5.3 AABAA  Nicobar Islands            

 

O: 15OCT2020 04:26:13   7.7S  128.0E mb=4.5  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 14OCT2020 127853     6.0S  128.0E 4.0-5.3 ABAAA  Banda Sea                  

 

CENTRAL AND SOUTH AMERICA

 

O: 15OCT2020 02:20     31.5S   69.2W mb=5.0  GUC    Coquimbo at La Serena and Paig

P: 17OCT2020 128073    31.0S   70.0W 4.0-5.4 AAAAA  Central Chile              

 

GUC reported this earthquake was felt with intensity III in  Coquimbo at La Serena and Paiguano and II in Rio Hurtado, Chile.

 

O: 14OCT2020 20:16     33.0S   70.2W mb=4.3  GUC    Santiago at Santiago, Pedro Ag

P: 14OCT2020 128073    33.0S   72.0W 4.0-5.4 AABAA  Central Chile              

 

GUC reported this earthquake was felt with intensity IV in  Santiago at Santiago, Pedro Aguirre Cerda and Tiltil and II in El Monte, Chile.

 

O: 14OCT2020 19:19:21   6.1S   76.9W ML=4.2  EMSC   NORTHERN PERU                

P: 17OCT2020 127864     6.0S   79.0W 4.0-5.4 BABAA  No. Peru                   

 

O: 14OCT2020 12:52:27  15.1N   98.3W ML=4.0  EMSC   OFF COAST OF OAXACA, MEXICO  

P: 18OCT2020 127891    15.0N   97.0W 3.5-5.1 BAAAA  Oaxaca, Mexico             

 

O: 14OCT2020 21:18:35  15.3N   94.5W ML=4.2  EMSC   OFF COAST OF OAXACA, MEXICO  

P: 13OCT2020 127877    14.0N   94.0W 3.5-5.0 ABAAA  Chiapas, Mexico            

 

O: 14OCT2020 10:17:05  15.6N   88.7W mb=4.1  EMSC   GUATEMALA                    

P: 21OCT2020 127888    16.0N   88.0W 3.5-5.2 CAAAA  Nicaragua                  

 

O: 14OCT2020 13:26:34  16.7N   99.5W ML=4.0  EMSC   GUERRERO, MEXICO             

P: 22OCT2020 127892    19.0N   99.0W 3.5-5.0 CCAAA  Oaxaca, Mexico             

 

O: 14OCT2020 07:58:45  17.9N   66.7W ML=3.1  EMSC   PUERTO RICO REGION           

P: 14OCT2020 127893    18.0N   66.0W 3.4-4.8 AAAAA  Puerto Rico                 

 

O: 14OCT2020 19:14:21  18.7N   69.3W ML=3.3  EMSC   DOMINICAN REPUBLIC           

P: 13OCT2020 127900    20.0N   69.0W 3.0-4.3 ABAAA  Bahamas/No. Caribbean      

 

O: 14OCT2020 23:44:31  19.4N   70.5W ML=3.0  EMSC   DOMINICAN REPUBLIC           

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

 

O: 15OCT2020 02:20:10  31.5S   68.9W Mw=4.9  EMSC   SAN JUAN, ARGENTINA          

P:  8OCT2020 127809    31.0S   68.0W 4.0-5.4 CAAAA  Central Chile              

 

O: 14OCT2020 23:18:26  31.8S   68.1W Mw=4.5  EMSC   SAN JUAN, ARGENTINA          

P: 17OCT2020 128073    31.0S   70.0W 4.0-5.4 BABAA  Central Chile              

 

O: 14OCT2020 20:16:09  33.0S   70.2W ML=4.3  EMSC   VALPARAISO, CHILE            

P: 14OCT2020 128073    33.0S   72.0W 4.0-5.4 AABAA  Central Chile              

 

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

 

AFRICA AND EUROPE

 

O: 14OCT2020 10:58:31  35.6N   26.3E mb=4.1  EMSC   CRETE, GREECE                 

O: 14OCT2020 22:22:49  35.6N   26.4E ML=4.1  EMSC   CRETE, GREECE                

P: 15OCT2020 127915    35.0N   25.0E 3.0-4.6 AAAAA  Aegean Sea                 

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

 

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

 

SOUTHWEST PACIFIC

 

O: 15OCT2020 01:20:28  17.1S  173.8W mb=4.8  EMSC   TONGA                        

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

 

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

 

OCEAN RIDGES

 

O: 14OCT2020 15:28:41   9.9S   66.1E mb=4.6  EMSC   MID-INDIAN RIDGE             

P: 17OCT2020 128050    14.0S   66.0E 4.0-5.3 BCAAA  So. Indian Ocean           

 

O: 14OCT2020 15:27:25  59.6S   24.6W mb=4.9  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 17OCT2020 128091    59.0S   26.0W 4.0-5.5 BAAAA  So. Sandwich Islands       

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 14OCT2020 14:44:01  20.3S  147.9E ML=3.7  EMSC   QUEENSLAND, AUSTRALIA        

 

O: 14OCT2020 08:55:12  30.6S  178.8W mb=4.5  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P: 14OCT2020 128081    31.0S  178.0W 4.0-5.3 AAAAA  So. Kermadec Islands       

 

O: 15OCT2020 01:23:57  33.4S  178.6E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 17OCT2020 128077    33.0S  178.0E 4.0-5.3 AAAAA  No. Kermadec Islands       

 

O: 14OCT2020 19:07:28  39.6S  174.9E ML=3.6  EMSC   NORTH ISLAND OF NEW ZEALAND  

P: 15OCT2020 128079    39.0S  175.0E 3.0-4.3 AAAAA  North Island, N.Z.         

 

O: 14OCT2020 23:06:01  46.8S  165.7E ML=3.6  EMSC   OFF W. COAST OF S. ISLAND, N.Z

P: 13OCT2020 128087    46.0S  167.0E 3.0-4.9 AAAAA  Southern S. Isl. N.Z.      

 

JAPAN AND KURIL ISLANDS

 

O: 14OCT2020 10:42:36  37.4N  141.7E mb=4.4  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 16OCT2020 127942    36.0N  142.0E 4.0-5.3 ABAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 14OCT2020 13:08:28  31.4N  115.4W Ml=2.7  EMSC   BAJA CALIFORNIA, MEXICO      

O: 14OCT2020 14:03:24  31.5N  115.3W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 16OCT2020 127949    32.4N  115.8W 2.5-4.3 AAAAA  So. California             

P: 19OCT2020 127948    31.9N  116.3W 2.5-4.3 BAAAA  So. California             

 

O: 15OCT2020 04:48:00  33.1N  116.1W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

O: 14OCT2020 12:38:22  33.5N  116.5W Ml=2.4  EMSC   SOUTHERN CALIFORNIA          

P: 14OCT2020 127948    33.0N  116.3W 2.5-4.3 AAAAA  So. California             

 

O: 14OCT2020 21:11:50  35.7N  117.6W Ml=2.6  EMSC   SOUTHERN CALIFORNIA          

O: 14OCT2020 23:31:08  35.9N  117.7W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2020 127917    36.0N  117.9W 2.5-4.3 AAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.6 in Ridgecrest, California was felt with intensity II-III in the area(s) of Ridgecrest, California.

 

O: 14OCT2020 21:42:40  36.0N  121.6W ML=3.2  EMSC   OFFSHORE CENTRAL CALIFORNIA

O: 14OCT2020 21:43:55  36.0N  121.5W Md=3.0  EMSC   CENTRAL CALIFORNIA

O: 14OCT2020 22:30:43  36.0N  121.5W Md=2.3  EMSC   CENTRAL CALIFORNIA

O: 14OCT2020 21:40:06  36.0N  121.6W ML=2.7  EMSC   OFFSHORE CENTRAL CALIFORNIA  

P: 15OCT2020 127921    36.4N  121.0W 2.5-4.3 AAAAA  Central California         

P: 17OCT2020 127943    35.6N  121.3W 2.5-4.3 BAAAA  Off So. California         

 

NEIC reported these earthquakes of M 3.0, 3.0 and 3.5  in Central California was felt with intensity II-III in the area(s) of Central California at King City.

 

O: 14OCT2020 18:37:56  36.4N  118.0W Ml=2.9  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2020 127917    36.0N  117.9W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 14OCT2020 12:18:04  36.4N  120.5W ML=2.5  EMSC   CENTRAL CALIFORNIA

P: 15OCT2020 127921    36.4N  121.0W 2.5-4.3 AAAAA  Central California         

P: 17OCT2020 127943    35.6N  121.3W 2.5-4.3 BAAAA  Off So. California         

 

NEIC reported this earthquake of M 2.8 in Coalinga, California was felt with intensity II-III in the area(s) of Coalinga, California.

 

O: 14OCT2020 20:54:25  36.5N  121.1W Md=2.3  EMSC   CENTRAL CALIFORNIA

O: 14OCT2020 23:27:32  36.9N  121.5W Md=2.8  EMSC   NORTHERN CALIFORNIA          

P: 17OCT2020 127922    37.1N  121.5W 2.5-4.3 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.8 in Central California was felt with intensity II-III in the area(s) of Central California at Watsonville.

 

O: 15OCT2020 00:24:00  38.2N  117.9W ml=2.7  EMSC   NEVADA                       

O: 14OCT2020 11:11:41  38.2N  117.9W ml=2.3  EMSC   NEVADA

P: 13OCT2020 127918    37.9N  118.2W 2.5-4.4 AAAAA  California/Nevada area     

 

O: 15OCT2020 00:25:55  41.0N  124.1W MD=2.6  EMSC   NORTHERN CALIFORNIA           

O: 15OCT2020 03:47:11  40.3N  124.4W Md=2.2  EMSC   OFFSHORE NORTHERN CALIFORNIA

P: 16OCT2020 127989    40.2N  124.2W 2.5-4.3 AAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 2.6 in  Northern California was felt with intensity II-III in the area(s) of  Northern California at McKinleyville, Arcata and Eureka.

 

ALASKA

 

O: 14OCT2020 16:33:57  53.2N  163.5W mb=4.0  EMSC   UNIMAK ISLAND REGION, ALASKA 

P: 15OCT2020 128022    54.5N  161.8W 3.5-4.8 ABAAA  Unimak Islands, Aleutians   

 

O: 14OCT2020 15:04:14  55.5N  158.3W ML=3.1  EMSC   ALASKA PENINSULA             

P: 14OCT2020 128007    54.8N  159.7W 3.5-4.8 AAAAA  Alaska Peninsula           

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

 

O: 15OCT2020 04:43:25  60.1N  152.1W ML=3.3  EMSC   SOUTHERN ALASKA              

P: 16OCT2020 128025    60.3N  153.0W 3.2-4.8 AAAAA  Central Alaska             

 

O: 14OCT2020 14:42:18  66.2N  157.3W ml=3.0  EMSC   NORTHERN ALASKA              

O: 14OCT2020 19:50:12  66.2N  164.0W ml=3.5  EMSC   NORTHERN 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: 15OCT2020 04:29:31  31.7N  104.1W ML=3.0  EMSC   WESTERN TEXAS                

P: 13OCT2020 127946    31.5N  103.6W 2.0-3.8 AAAAA  SW U.S.A                   

 

O: 15OCT2020 00:36:45  39.7N  110.7W ML=3.3  EMSC   UTAH                         

P: 17OCT2020 127927    39.2N  108.4W 2.0-3.9 AABAA  Colorado area              

 

NEIC reported this earthquake of M 3.3 in Utah was felt with intensity II-III in the area(s) of Utah at Salt Lake City and Bountiful.

 

O: 14OCT2020 13:06:17  44.4N  115.2W Ml=2.2  EMSC   SOUTHERN IDAHO               

P: 14OCT2020 127978    44.5N  115.2W 2.0-3.9 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 14OCT2020 23:08:55  35.2N   96.1W ML=2.4  EMSC   OKLAHOMA                     

P: 14OCT2020 127956    35.0N   96.0W 2.0-3.8 AAAAA  Southern Plains             

 

O: 14OCT2020 13:48:53  49.6N   82.4W MB=3.6  ECAN Kapuskasing, ON. Felt          

O: 14OCT2020 13:48:53  49.6N   82.4W ML=3.6  EMSC   ONTARIO, CANADA              

P:  7OCT2020 127737    46.0N   81.0W 2.0-3.9 CCAAA  Ohio/Lake Erie              

 

HAWAII

 

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

 

MODERATE QUAKE IN SOCOTRA REGION

 

EARTHQUAKE SUMMARY FOR OCTOBER 13, 2020

 

The strongest earthquake in the world today was an M 5.4 in the Socotra Region south of Iran. It was followed by an M 4.5 aftershock. It was not reported felt in this remote area. The last earthquake of M>=5.4 within about 300 km of this epicenter was an M 5.4 on March 3, 2008. An M 6.0 hit about 350 km south  of this epicenter on July 19, 2014, the strongest regional event since 1996. Forecast 127875 had expected today's event within about 150 km of this epicenter was likely around October 16. This epicenter at 56 East longitude is directly south of the M 5.0 in the Caspian Sea yesterday at 52 East longitude, the largest in that region since 2015. Today's earthquake may have been promoted by tidal effects associated with the upcoming new moon as it occurred near the longitude of maximum stress with that event as noted in the previous issue of this summary:

 

 

"The new moon will arrive on October 16, 2020 at 19:31 UT. Longitudes which are near 115 West and 65 East are at sub-solar and antisolar conditions and will experience the strongest tidal stresses at this time. In the west these include areas of California and western U.S. and Canada and the Gulf of California as well as areas of the southeast Pacific Rise including areas near Easter Island. In the east these include areas of Afghanistan, Iran, India and Pakistan and portions of the Southwest Indian Ocean. These areas are most likely to see tidally triggered strong seismic enhancement in the next week. Many areas are subject to tidal enhancement of seismicity and the coming week should see several strong to major earthquakes in the world. In the past four months six of the seven quakes of M>=6.7 have occurred within several days of the New moon. These included events in the mid-Atlantic; Banda Sea; Sumatra; Alaska Peninsula; Oaxaca, Mexico and the Kermadec Islands. Three of these occurred on the 21st-23rd of the month the other three occurred on the 18th of the month." (October 12-13, 2020)

 

Today's epicenter is at 104 degrees from the M 7.7 in the Alaska Peninsula

quake of July 22 and was probably promoted by concentrated energy from that event.

 

O: 13OCT2020 09:29:52  13.9N   56.9E mb=5.4  EMSC   SOCOTRA REGION               

O: 13OCT2020 09:03:01  14.0N   56.9E mb=4.5  EMSC   SOCOTRA REGION               

P: 16OCT2020 127875    15.0N   56.0E 3.5-4.8 BAAAA  Arabian Sea                

 

The strongest earthquake in the U.S. or Canada  today was an M 4.4 in the Northwest Territories of Canada. The only earthquake in the past six years within about 300 km of this epicenter with M>=4.4 was an M 4.7 on July 2, 2020. Prior to that earthquakes of M 4.4 and 4.5 occurred in March and July, 2014 in this area. The strongest earthquake in this area in the past 30 years was an M 5.6 on June 10, 1990.  Forecast 127772 had expected today's event was likely within about 50 km of this epicenter was likely around October 10.

 

O: 14OCT2020 09:07:00  62.3N  124.8W MB=4.4  ECAN OF WRIGLEY, NT                  

P: 10OCT2020 127772    62.1N  124.2W 2.5-3.9 BAAAA  Northwest Terr., Canada    

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

 

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

 

INDONESIA AND PHILIPPINES

 

O: 14OCT2020 01:11:01   5.1S  134.0E ML=4.7  EMSC   KEPULAUAN ARU REGION, INDONESI

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

 

O: 14OCT2020 03:43:30   6.5N  125.9E mb=4.2  EMSC   MINDANAO, PHILIPPINES        

P: 11OCT2020 127599     7.0N  126.0E 4.0-5.3 BAAAA  Central Philippines        

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 13OCT2020 19:07     34.0S   72.2W mb=4.1  GUC    O'Higgins at Navidad and Pichi

P: 14OCT2020 128073    33.0S   72.0W 4.0-5.4 AAAAA  Central Chile               

 

GUC reported this earthquake was felt with intensity  III in O'Higgins at Navidad and Pichilemu, Chile.

 

O: 13OCT2020 17:16     26.3S   71.0W mb=5.0  GUC    Atacma at Chanaral and Diego d

P: 17OCT2020 128062    28.0S   71.0W 4.0-5.5 BBAAA  Coast Central Chile        

 

GUC reported this earthquake was felt with intensity  IV in  Atacma at Chanaral and Diego de Almagro; III inCaldera, Copiapo and Tierra Amarilla, Chile.

 

O: 13OCT2020 21:09:25   8.3S   74.2W mb=4.7  EMSC   CENTRAL PERU                  

P: 11OCT2020 127618     6.0S   79.0W 4.0-5.4 ACCAA  No. Peru                   

 

NEIC reported this earthquake of M 4.7 in Central Peru  was felt with intensity II-III in the area(s) of Central Peru at Pucallpa.

 

O: 13OCT2020 11:54:17  10.8N   63.9W mb=4.4  EMSC   ISLA DE MARGARITA, VENEZUELA R

P: 14OCT2020 127898    11.0N   63.0W 3.4-4.9 AAAAA  Windward Islands           

 

NEIC reported this earthquake of M 4.4 in Northern Venezuela was felt with intensity II-III in the area(s) of Northern Venezuela at Porlamar and La Asuncion, Nueva Esparta.

 

O: 13OCT2020 23:34:41  13.4N   89.8W ML=4.0  EMSC   OFFSHORE EL SALVADOR         

P: 16OCT2020 127880    13.0N   90.0W 3.5-5.1 BAAAA  Guatemala                  

 

O: 14OCT2020 06:56:18  14.0N   92.1W mb=4.5  EMSC   OFFSHORE GUATEMALA           

O: 14OCT2020 06:15:53  14.3N   93.2W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

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

 

NEIC reported this earthquake of M 4.3 in Guatemala was felt with intensity II-III in the area(s) of Guatemala at Puerto Barrios and in Belize at Punta Gorda, Toledo.

 

O: 13OCT2020 07:37:34  14.7N   93.8W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 13OCT2020 127877    14.0N   94.0W 3.5-5.0 AAAAA  Chiapas, Mexico            

 

O: 13OCT2020 09:31:11  15.3N   94.3W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 10OCT2020 127630    15.0N   95.0W 3.5-5.1 BAAAA  Chiapas, Mexico            

 

O: 14OCT2020 00:40:02  15.5N   88.9W mb=4.3  EMSC   GUATEMALA                     

P: 16OCT2020 127880    13.0N   90.0W 3.5-5.1 ACAAA  Guatemala                  

P: 21OCT2020 127888    16.0N   88.0W 3.5-5.2 CAAAA  Nicaragua                  

 

O: 13OCT2020 10:38:16  15.5S   71.8W ML=4.0  EMSC   SOUTHERN PERU                 

P: 16OCT2020 128044    15.0S   71.0W 4.0-5.3 BAAAA  Central Peru               

 

O: 14OCT2020 00:14:55  15.7N   96.0W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 10OCT2020 127630    15.0N   95.0W 3.5-5.1 BAAAA  Chiapas, Mexico            

P: 18OCT2020 127891    15.0N   97.0W 3.5-5.1 BAAAA  Oaxaca, Mexico             

 

O: 13OCT2020 11:28:40  17.7N   95.3W ML=4.0  EMSC   OAXACA, MEXICO               

P: 14OCT2020 127891    17.0N   96.0W 3.5-5.0 AAAAA  Oaxaca, Mexico             

 

O: 13OCT2020 23:51:01  17.7N   98.6W ML=4.1  EMSC   GUERRERO, MEXICO             

P:  7OCT2020 127646    16.0N   98.0W 3.5-5.0 CBAAA  Oaxaca, Mexico             

 

O: 13OCT2020 12:24:12  18.0N   67.0W Md=3.0  EMSC   PUERTO RICO                  

P: 13OCT2020 127895    19.0N   67.0W 3.4-4.8 AAAAA  Puerto Rico                

 

O: 13OCT2020 22:59:48  18.1N   64.2W ML=3.3  EMSC   VIRGIN ISLANDS REGION        

P: 15OCT2020 127883    18.0N   65.0W 3.0-4.9 AAAAA  Leeward Islands            

 

O: 13OCT2020 20:40:54  18.2N   67.9W Md=3.6  EMSC   MONA PASSAGE, PUERTO RICO    

P:  9OCT2020 127647    18.0N   67.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 13OCT2020 20:59:46  18.2N   68.8W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P: 13OCT2020 127900    20.0N   69.0W 3.0-4.3 ABAAA  Bahamas/No. Caribbean      

 

O: 14OCT2020 05:20:08  19.6N  102.4W ML=4.2  EMSC   MICHOACAN, MEXICO            

P: 16OCT2020 127886    18.0N  103.0W 3.5-5.1 ABAAA  Michoacan, Mexico          

 

O: 13OCT2020 13:38:25  21.2S   68.1W mb=4.2  EMSC   POTOSI, BOLIVIA              

P: 15OCT2020 128059    21.0S   67.0W 4.0-5.4 AAAAA  Argentina                  

P: 15OCT2020 128063    21.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

 

O: 13OCT2020 17:16:15  26.2S   71.1W Mw=4.8  EMSC   OFFSHORE ATACAMA, CHILE      

P: 17OCT2020 128062    28.0S   71.0W 4.0-5.5 BBAAA  Coast Central Chile        

 

O: 13OCT2020 19:07:22  34.0S   72.2W mb=4.1  EMSC   OFFSHORE O'HIGGINS, CHILE    

P: 14OCT2020 128073    33.0S   72.0W 4.0-5.4 AAAAA  Central Chile              

 

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

 

AFRICA AND EUROPE

 

O: 14OCT2020 01:52:13  71.5N    5.4W Mn=3.6  EMSC   JAN MAYEN ISLAND REGION      

P: 17OCT2020 128041    71.0N    7.0W 3.5-4.8 BAAAA  Jan Mayen Isl. area        

 

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: 13OCT2020 09:29:52  13.9N   56.9E mb=5.4  EMSC   SOCOTRA REGION               

O: 13OCT2020 09:03:01  14.0N   56.9E mb=4.5  EMSC   SOCOTRA REGION               

P: 16OCT2020 127875    15.0N   56.0E 3.5-4.8 BAAAA  Arabian Sea                

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 14OCT2020 00:21:08  31.2S  179.1E mb=4.4  EMSC   KERMADEC ISLANDS REGION      

P: 17OCT2020 128077    33.0S  178.0E 4.0-5.3 BBAAA  No. Kermadec Islands       

 

O: 13OCT2020 19:56:03  36.4S  177.5E ML=3.6  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P: 15OCT2020 128078    35.0S  178.0E 4.0-5.3 ABAAA  No. Kermadec Islands       

P: 19OCT2020 128078    37.0S  178.0E 3.0-4.3 CAAAA  North Island, N.Z.         

 

JAPAN AND KURIL ISLANDS

 

O: 13OCT2020 13:16:02  33.5N  141.1E mb=4.8  EMSC   OFF EAST COAST OF HONSHU, JAPA

P: 18OCT2020 127941    34.0N  140.0E 4.0-5.3 BAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 13OCT2020 12:27:54  32.9N  115.9W ML=2.6  EMSC   SOUTHERN CALIFORNIA          

P: 16OCT2020 127949    32.4N  115.8W 2.5-4.3 BAAAA  So. California             

 

O: 13OCT2020 15:09:55  35.8N  119.3W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P: 19OCT2020 127951    35.6N  118.4W 2.5-4.3 CAAAA  So. California             

 

O: 13OCT2020 22:56:02  36.2N  120.5W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 14OCT2020 127922    36.6N  120.7W 2.5-4.3 AAAAA  Central California         

 

O: 14OCT2020 02:30:15  36.4N  117.9W Ml=2.2  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2020 127917    36.0N  117.9W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 13OCT2020 12:46:10  36.7N  121.3W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P: 15OCT2020 127921    36.4N  121.0W 2.5-4.3 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in Central California  was felt with intensity II-III in the area(s) of  Central California at San Juan Bautista, Los Banos, San Jose and Walnut Creek.

 

O: 13OCT2020 12:01:24  37.3N  120.0W Md=2.7  EMSC   CENTRAL CALIFORNIA           

P: 14OCT2020 127922    36.6N  120.7W 2.5-4.3 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in Central California was felt with intensity II-III in the area(s) of Central California at Mariposa.

 

O: 13OCT2020 19:45:55  38.8N  122.8W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 13OCT2020 127924    38.9N  122.8W 2.5-4.3 AAAAA  Central California         

 

ALASKA

 

O: 13OCT2020 16:40:38  51.9N  178.7W ML=3.1  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 15OCT2020 128008    52.3N  179.5W 3.5-4.8 AAAAA  Andreanoff Isls, Aleutians 

 

O: 14OCT2020 03:19:57  60.8N  150.6W ML=3.2  EMSC   KENAI PENINSULA, ALASKA      

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

 

NEIC reported this earthquake of M 3.0 in Kenai Peninsula, Alaska  was felt with intensity II-III in the area(s) of Kenai Peninsula, Alaska at Kenai, Anchorage.

 

O: 14OCT2020 02:21:51  62.3N  153.4W ML=3.1  EMSC   CENTRAL ALASKA               

P: 15OCT2020 128028    63.1N  151.9W 3.2-4.8 AAAAA  Central Alaska              

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 14OCT2020 00:51:07  43.4N  127.0W ML=3.2  EMSC   OFF COAST OF OREGON          

P: 15OCT2020 127992    43.6N  127.5W 3.0-4.3 AAAAA  Off Coast of Oregon        

 

O: 14OCT2020 01:46:39  47.7N  122.1W Ml=2.1  EMSC   SEATTLE-TACOMA AREA, WASHINGTO

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

 

O: 13OCT2020 07:11:03  48.0N  124.7W Ml=2.9  EMSC   OFFSHORE WASHINGTON          

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

 

O: 14OCT2020 09:07:00  62.3N  124.8W MB=4.4  ECAN OF WRIGLEY, NT                 

P: 10OCT2020 127772    62.1N  124.2W 2.5-3.9 BAAAA  Northwest Terr., Canada    

 

ROCKY MOUNTAINS REGION

 

O: 13OCT2020 08:25:45  31.9N  102.3W mb=2.5  EMSC   WESTERN TEXAS                

P: 13OCT2020 127946    31.5N  103.6W 2.0-3.8 AAAAA  SW U.S.A                   

 

NEIC reported this earthquake of M 2.5 in Western Texas was felt with intensity II-III in the area(s) of Western Texas at Odessa.

 

O: 13OCT2020 16:08:41  35.2N  111.5W ML=3.3  EMSC   ARIZONA                      

P: 11OCT2020 127699    34.7N  111.0W 2.0-4.0 AAAAA  SW U.S.A                   

P: 18OCT2020 127947    35.7N  111.0W 2.0-4.1 BAAAA  SW U.S.A                   

 

NEIC reported this earthquake of M 3.3 in Arizona  was felt with intensity II-III in the area(s) of  Arizona at Flagstaff, Comp Verde, Chino Valley, Prescott Valley, Winslow, Mayer, Holbrook, Scottsdale and Glendale.

 

O: 13OCT2020 21:05:11  37.9N  112.4W ML=2.6  EMSC   UTAH                         

P: 13OCT2020 127962    37.0N  112.8W 2.0-3.8 AAAAA  Utah area                  

 

O: 13OCT2020 15:22:11  44.3N  115.2W Ml=2.2  EMSC   SOUTHERN IDAHO               

O: 13OCT2020 08:49:35  44.4N  115.2W Ml=2.1  EMSC   SOUTHERN IDAHO               

P: 14OCT2020 127978    44.5N  115.2W 2.0-3.9 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 13OCT2020 12:51:06  36.4N   81.2W mb=2.4  EMSC   VIRGINIA-N CAROLINA BORDER REG

P: 17OCT2020 127930    37.2N   81.9W 2.0-3.8 BAAAA  Kentucky/Tennessee/NC      

 

O: 13OCT2020 08:38:39  67.8N   65.3W ML=3.2  EMSC   BAFFIN ISLAND REGION, CANADA 

 

O: 13OCT2020 08:38:39  67.8N   65.3W MB=3.2  ECAN Qikiqtarjuaq, NU               

P:  9OCT2020 127777    71.0N   75.0W 2.5-3.8 BCBAA  Baffin/Davis Strait Canada 

 

HAWAII

 

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

 

STRONG TIDAL SEISMICITY POSSIBLE WITH UPCOMING NEW MOON

 

EARTHQUAKE SUMMARY FOR OCTOBER 12, 2020

 

Based on the history of large earthquakes around the world over the past four months, it is likely that a strong enhancement of seismicity will coincide with the upcoming new moon. This summary has noted this as:

 

"The new moon will arrive on October 16, 2020 at 19:31 UT. Longitudes which are near 115 West and 65 East are at sub-solar and antisolar conditions and will experience the strongest tidal stresses at this time. In the west these include areas of California and western U.S. and Canada and the Gulf of California as well as areas of the southeast Pacific Rise including areas near Easter Island. In the east these include areas of Afghanistan, Iran, India and Pakistan and portions of the Southwest Indian Ocean. These areas are most likely to see tidally triggered strong seismic enhancement in the next week. Many areas are subject to tidal enhancement of seismicity and the coming week should see several strong to major earthquakes in the world. In the past four months six of the seven quakes of M>=6.7 have occurred within several days of the New moon. These included events in the mid-Atlantic; Banda Sea; Sumatra; Alaska Peninsula; Oaxaca, Mexico and the Kermadec Islands. Three of these occurred on the 21st-23rd of the month the other three occurred on the 18th of the month." (October 12-13, 2020)

 

The earthquakes in question follow:

 

MO DA HR MN SE YEAR LAT    LONG  DEP MAG Location

 

09 18 21 43 58 2020   0.8  -26.7  30 6.7 Central Mid-Atlantic Ridge

09 01 04 09 30 2020 -28.0  -71.0  30 6.8 Atacama, Chile

08 21 04 09 52 2020  -6.7  123.5 643 6.9 Banda Sea

08 18 22 29 22 2020  -4.2  101.2  10 6.8 Sumatra

07 22 06 12 44 2020  55.1 -158.6  30 7.8 Alaska Peninsula

06 23 15 29 04 2020  16.1  -95.9  10 7.4 Oaxaca, Mexico

06 18 12 49 00 2020 -33.4 -177.5 100 7.4 Kermadec Islands

 

Seismicity around the world continued at quiet levels again today as it approaches the likely new moon enhancement.

 

The strongest earthquake in the world today was an M 5.0 in the Caspian Sea off shore Turkmenistan. The last earthquake within about 200 km of this epicenter with M>=5.0 was an M 5.2 on March 22, 2015 and prior to that an M 5.5 on June 7, 2014. Forecasts 127722 and 127973 had expected today's activity between October 5 and 13 within about 100 km of today's epicenter.

 

O: 12OCT2020 11:47:20  39.6N   52.0E mb=5.0  EMSC   CASPIAN SEA, OFFSHR TURKMENIST

P:  5OCT2020 127722    40.0N   52.0E 4.0-5.3 CAAAA  Kazakhstan                 

P: 13OCT2020 127973    40.0N   54.0E 4.0-5.3 AABAA  Kazakhstan                 

 

Active conditions also continued in the area of Chiapas, Mexico and Guatemala where an M 5.5 occurred yesterday. The strongest event in the region today was  an M 4.9. In the previous issue of this summary, this activity had been addressed as:

 

"The strongest earthquake felt in the world today was an M 5.5 off the coast of

Chiapas, Mexico. Today's event was reported by NEIC felt in Chiapas at Cacahoatan and Tuxtla Gutierrez and in Santa Catarina Pinula, Guatemala. A similar earthquake of M 5.5 last hit the area of Chiapas, Mexico on May 24, 2020 and on April 24, 2020. The only strong earthquake in the Chiapas area in the past year was an M 6.3 about 100 km south of today's M 5.5 on November 20, 2019. Forecast 127630 had expected today's event was likely about 100 km north of the epicenter was likely around October 9. This activity is at 144 degrees from the Banda Sea earthquake of August 21, 2020 (M 6.9) and was probably promoted by energy from this source." (October 11-12, 2020)

 

NEIC reported this activity in Chiapas, Mexico  was felt with intensity II-III in the area(s) of Guatemala at San Marcos la Laguna and Atitlan, Solola.

 

O: 12OCT2020 10:17:57  14.6N   93.8W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 14:36:22  14.6N   93.7W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 21:28:51  14.6N   93.8W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 07:03:06  14.7N   93.7W Mw=4.9  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 21:06:43  14.8N   93.7W mb=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 13OCT2020 00:31:22  14.9N   93.6W mb=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12OCT2020 15:25:23  15.0N   93.3W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12OCT2020 09:22:00  15.1N   93.6W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12OCT2020 16:38:31  15.1N   93.1W mb=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12OCT2020 21:03:11  14.5N   93.8W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 13OCT2020 00:12:40  15.1N   92.6W mb=4.3  EMSC   CHIAPAS, MEXICO              

P:  9OCT2020 127630    16.0N   93.0W 3.5-5.1 BAAAA  Chiapas, Mexico            

P: 13OCT2020 127877    14.0N   94.0W 3.5-5.0 AAAAA  Chiapas, Mexico            

 

A series of moderate earthquakes also occurred in the central Philippines today. These events of M 4.8 and 4.0 in Mindanao; M 4.5 in the northern Philippines and M 4.7 in Samar may have been promoted by the passage through the area of Tropical Storm Nangka. The effects of this storm on this region were expected in previous issues of this summary as:

 

 

"TD 17W (Nangka) formed today west of Samar, Indonesia with winds up to 35 kts. It is expected to track to the west over the next several days reaching Vietnam around October 11. Seismicity in southeast Asia is expected to be enhanced by this storm at landfall." (October 9-13, 2020)

 

NEIC reported this earthquake of M 4.8 in  Mindanao, Philippines was felt with intensity II-III in the area(s) of Mindanao, Philippines at Dagami, Eastern Visayas. PHIVOLCS reported it at M 5.0 and felt with intensity IV in General Luna, Burgos and Socorro, Surigao Del Norte; San Jose, Dinagat Islands; III in Surigao City, Dapa, Surigao Del Norte and II in Carrascal and Tubod, Surigao Del Sur; Loreto, Dinagat Islands. Forecast 127884 had expected this activity in mid-October.

 

O: 12OCT2020 19:21:38   9.8N  126.1E mb=4.8  EMSC   MINDANAO, PHILIPPINES        

O: 12OCT2020 21:07:56  10.0N  126.3E ML=4.0  EMSC   MINDANAO, PHILIPPINES        

P: 21OCT2020 127884    12.0N  122.0E 3.5-4.8 CBCAA  Luzon, Philippines         

 

NEIC reported the earthquake of M 4.7 in Samar, Philippines  was felt with intensity II-III in the area(s) of Samar, Philippines at Pawing, Eastern Visayas. PHIVOLCS reported it was felt with intensity IV in Hernani, Eastern Samar; III in Llorente, Eastern Samar and II in Catbalogan City; La Paz, Julita, Dagami, Tanauan, Dulag and Barugo, Leyte.

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

 

O: 13OCT2020 06:49:04  11.3N  125.6E mb=4.7  EMSC   SAMAR, PHILIPPINES           

P: 14OCT2020 127884    13.0N  122.0E 3.5-4.8 ABCAA  Luzon, Philippines         

 

O: 13OCT2020 04:35:58  19.9N  121.4E mb=4.5  EMSC   BABUYAN ISL REGION, PHILIPPINE

P: 17OCT2020 127913    21.0N  120.0E 4.0-5.4 BBBAA  Taiwan                     

 

The strongest earthquake in the U.S. or Canada today was an M 3.5-3.6 in the Alaska Peninsula. The last earthquake within about 100 km of this epicenter was an M 3.8 on September 8, 2020. Forecast 128022 had expected today's event was likely around October 15.

 

O: 13OCT2020 03:18:51  54.2N  162.4W ml=3.5  EMSC   ALASKA PENINSULA             

O: 13OCT2020 03:18:50  54.0N  162.3W ml=3.6  ANSS   ALASKA PENINSULA             

P: 15OCT2020 128022    54.5N  161.8W 3.5-4.8 AAAAA  Unimak Islands, Aleutians  

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 13OCT2020 01:36:21  23.2N   93.9E ML=4.1  EMSC   MYANMAR-INDIA BORDER REGION  

P: 15OCT2020 127907    24.0N   94.0E 4.0-5.4 AAAAA  Myanmar                    

 

O: 13OCT2020 02:25:28  37.1N   71.6E mb=4.4  EMSC   TAJIKISTAN                   

P:  8OCT2020 127683    36.0N   72.0E 3.8-5.1 BBAAA  Hindu Kush/Pakistan        

 

O: 12OCT2020 15:39:43  24.5N  122.0E mb=4.3  EMSC   TAIWAN REGION                

P: 15OCT2020 127913    23.0N  122.0E 4.0-5.3 BBAAA  Taiwan                     

 

NEIC reported this earthquake of M 4.3 in  Taiwan was felt with intensity II-III in the area(s) of Taiwan in Taoyuan.

 

O: 12OCT2020 11:58:28  55.0N  164.3E mb=4.0  EMSC   KOMANDORSKIYE OSTROVA REGION 

P: 11OCT2020 127756    56.0N  166.0E 4.0-5.5 AAAAA  Komandorsky Isl            

 

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

 

INDONESIA AND PHILIPPINES

 

O: 12OCT2020 15:14:13   1.2S  134.9E ML=4.4  EMSC   NEAR N COAST OF PAPUA, INDONES

P:  8OCT2020 127625     1.0S  137.0E 4.0-5.4 BABAA  West Irian, PNG            

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

 

BMG reported this earthquake of M 4.5 in New Guinea  was felt with intensity II-III in the area(s) of New Guinea at Tembagapura, PNG.

 

O: 12OCT2020 18:41:57   4.8S  152.2E mb=4.9  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 16OCT2020 127860     6.0S  152.0E 4.0-5.3 BBAAA  New Britain                

 

O: 12OCT2020 19:04:47   6.6S  129.4E ML=4.4  EMSC   BANDA SEA                    

P: 11OCT2020 127626     7.0S  130.0E 4.0-5.3 AAAAA  West Irian, PNG            

 

O: 12OCT2020 17:12:43   9.1S  107.2E ML=4.1  EMSC   SOUTH OF JAVA, INDONESIA     

P:  7OCT2020 127621     9.0S  106.0E 4.0-5.3 BAAAA  So. of Java                

 

O: 12OCT2020 19:21:38   9.8N  126.1E mb=4.8  EMSC   MINDANAO, PHILIPPINES        

O: 12OCT2020 21:07:56  10.0N  126.3E ML=4.0  EMSC   MINDANAO, PHILIPPINES        

P: 21OCT2020 127884    12.0N  122.0E 3.5-4.8 CBCAA  Luzon, Philippines         

 

O: 13OCT2020 06:49:04  11.3N  125.6E mb=4.7  EMSC   SAMAR, PHILIPPINES           

P: 14OCT2020 127884    13.0N  122.0E 3.5-4.8 ABCAA  Luzon, Philippines         

 

O: 13OCT2020 04:35:58  19.9N  121.4E mb=4.5  EMSC   BABUYAN ISL REGION, PHILIPPINE

P: 17OCT2020 127913    21.0N  120.0E 4.0-5.4 BBBAA  Taiwan                     

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 12OCT2020 23:09:29   2.2S   77.3W mb=4.5  EMSC   PERU-ECUADOR BORDER REGION   

P:  9OCT2020 127611     1.0S   81.0W 4.0-5.3 BBCAA  Ecuador                    

 

NEIC reported this earthquake of M 4.5 in  Peru-Ecuador was felt with intensity II-III in the area(s) of Peru-Ecuador at Tena Napo.

 

O: 12OCT2020 10:17:57  14.6N   93.8W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 14:36:22  14.6N   93.7W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 21:28:51  14.6N   93.8W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 07:03:06  14.7N   93.7W Mw=4.9  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 21:06:43  14.8N   93.7W mb=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 13OCT2020 00:31:22  14.9N   93.6W mb=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12OCT2020 15:25:23  15.0N   93.3W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12OCT2020 09:22:00  15.1N   93.6W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12OCT2020 16:38:31  15.1N   93.1W mb=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12OCT2020 21:03:11  14.5N   93.8W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 13OCT2020 00:12:40  15.1N   92.6W mb=4.3  EMSC   CHIAPAS, MEXICO              

P:  9OCT2020 127630    16.0N   93.0W 3.5-5.1 BAAAA  Chiapas, Mexico            

P: 13OCT2020 127877    14.0N   94.0W 3.5-5.0 AAAAA  Chiapas, Mexico            

 

O: 12OCT2020 17:30:31  15.2N   94.6W ML=4.2  EMSC   OFF COAST OF OAXACA, MEXICO  

P: 10OCT2020 127630    15.0N   95.0W 3.5-5.1 AAAAA  Chiapas, Mexico            

 

O: 13OCT2020 05:19:45  15.2S   71.8W mb=4.6  EMSC   SOUTHERN PERU                 

P: 10OCT2020 127784    16.0S   73.0W 4.0-5.4 BAAAA  So. Peru/Bolivia           

P: 14OCT2020 128052    16.0S   73.0W 4.0-5.4 AAAAA  So. Peru/Bolivia           

 

O: 12OCT2020 21:02:55  16.5S   70.9W Mw=5.0  EMSC   SOUTHERN PERU                 

P:  6OCT2020 127784    17.0S   72.0W 4.0-5.5 CAAAA  So. Peru/Bolivia           

 

O: 12OCT2020 07:46:46  15.6N   96.0W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO

O: 12OCT2020 21:13:35  15.7N   95.1W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO

O: 12OCT2020 08:19:49  17.4N   95.3W ML=4.3  EMSC   OAXACA, MEXICO               

P: 14OCT2020 127891    17.0N   96.0W 3.5-5.0 AAAAA  Oaxaca, Mexico             

 

O: 13OCT2020 06:28:35  18.0N  100.5W ML=4.3  EMSC   GUERRERO, MEXICO             

P:  6OCT2020 127641    19.0N  101.0W 3.5-5.3 CAAAA  Michoacan, Mexico          

 

O: 12OCT2020 16:13:52  19.8N   71.2W ML=3.7  EMSC   DOMINICAN REPUBLIC           

O: 12OCT2020 16:09:57  20.0N   71.2W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P:  7OCT2020 127648    20.0N   71.0W 3.4-4.8 BAAAA  Puerto Rico                

 

O: 12OCT2020 14:51:50  22.0S   70.2W mb=4.2  EMSC   ANTOFAGASTA, CHILE           

P: 17OCT2020 128059    21.0S   71.0W 4.0-5.3 BAAAA  Argentina                  

 

O: 13OCT2020 00:30:00  23.1S   69.2W Mw=4.6  EMSC   ANTOFAGASTA, CHILE           

P: 17OCT2020 128063    24.0S   69.0W 4.0-5.4 BAAAA  Coast No. Chile            

 

O: 13OCT2020 00:19:27  31.5S   68.5W mb=4.4  EMSC   SAN JUAN, ARGENTINA          

P:  8OCT2020 127809    31.0S   68.0W 4.0-5.4 BAAAA  Central Chile              

 

O: 12OCT2020 08:08:33  31.6S   70.1W mb=4.0  EMSC   SAN JUAN, ARGENTINA          

P: 17OCT2020 128073    31.0S   70.0W 4.0-5.4 BAAAA  Central Chile              

 

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

 

AFRICA AND EUROPE

 

O: 12OCT2020 08:53:18  35.6N   26.3E ML=3.8  EMSC   CRETE, GREECE                

P: 11OCT2020 127669    35.0N   25.0E 3.0-4.6 AAAAA  Aegean Sea                 

 

O: 12OCT2020 11:47:20  39.6N   52.0E mb=5.0  EMSC   CASPIAN SEA, OFFSHR TURKMENIST

P:  5OCT2020 127722    40.0N   52.0E 4.0-5.3 CAAAA  Kazakhstan                 

P: 13OCT2020 127973    40.0N   54.0E 4.0-5.3 AABAA  Kazakhstan                 

 

O: 12OCT2020 16:04:48  45.9N    7.0E ML=1.7  EMSC   NORTHERN ITALY               

P: 10OCT2020 127721    44.0N    7.0E 3.0-4.9 ABAAA  Italy                      

 

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

 

SOUTHWEST PACIFIC

 

O: 12OCT2020 23:49:46  19.3S  169.4E mb=4.9  EMSC   VANUATU                      

P: 13OCT2020 128058    17.0S  167.0E 4.0-5.3 ACBAA  Vanuatu Islands            

 

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: 12OCT2020 19:45:17  37.5S  177.2E ML=3.5  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P:  7OCT2020 127817    37.0S  178.0E 3.0-4.4 BAAAA  North Island, N.Z.          

 

O: 13OCT2020 03:53:30  40.5S  173.3E ML=3.7  EMSC   COOK STRAIT, NEW ZEALAND     

P: 16OCT2020 128085    42.0S  173.0E 3.0-4.8 BBAAA  So. Island, N.Z.           

 

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: 12OCT2020 08:28:26  33.0N  115.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 10OCT2020 127703    32.9N  115.6W 2.5-4.3 AAAAA  So. California             

 

O: 13OCT2020 00:57:56  33.9N  118.5W Ml=2.4  EMSC   SANTA MONICA BAY, CALIFORNIA 

P: 15OCT2020 127951    34.6N  118.4W 2.5-4.3 AAAAA  So. California             

 

O: 13OCT2020 03:12:22  34.2N  117.4W Ml=2.1  EMSC   GREATER LOS ANGELES AREA, CALI

P: 14OCT2020 127950    32.6N  117.3W 2.5-4.3 ABAAA  So. California             

 

O: 12OCT2020 11:52:01  35.7N  117.6W Ml=2.6  EMSC   SOUTHERN CALIFORNIA           

P: 15OCT2020 127917    36.0N  117.9W 2.5-4.3 BAAAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.6 in  Ridgecrest, California was felt with intensity II-III in the area(s) of Ridgecrest, California.

 

O: 12OCT2020 08:33:32  38.2N  117.9W ml=2.1  EMSC   NEVADA                       

P: 13OCT2020 127918    37.9N  118.2W 2.5-4.4 AAAAA  California/Nevada area     

 

O: 12OCT2020 15:39:44  39.2N  120.5W ML=2.0  EMSC   NORTHERN CALIFORNIA          

P:  9OCT2020 127730    40.0N  120.9W 2.5-4.3 BAAAA  Northern California        

 

O: 13OCT2020 06:39:39  39.4N  123.3W Md=2.1  EMSC   NORTHERN CALIFORNIA          

O: 13OCT2020 06:17:33  40.2N  123.5W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 14OCT2020 127925    39.4N  123.3W 2.5-4.3 AAAAA  Central California         

 

 

ALASKA

 

O: 12OCT2020 08:05:24  52.0N  173.8W ml=3.2  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 14OCT2020 128009    52.3N  173.5W 3.5-4.8 AAAAA  Andreanoff Isls, Aleutians 

 

O: 13OCT2020 03:18:51  54.2N  162.4W ml=3.5  EMSC   ALASKA PENINSULA             

P: 15OCT2020 128022    54.5N  161.8W 3.5-4.8 AAAAA  Unimak Islands, Aleutians  

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

No events of M>=2 were located in the northwestern U.S. or western Canada today.

 

ROCKY MOUNTAINS REGION

 

O: 12OCT2020 12:03:19  44.3N  115.0W Ml=2.7  EMSC   SOUTHERN IDAHO               

O: 12OCT2020 19:02:05  44.4N  115.2W Ml=2.4  EMSC   SOUTHERN IDAHO               

P: 14OCT2020 127978    44.5N  115.2W 2.0-3.9 AAAAA  Montana/Idaho               

 

O: 12OCT2020 20:41:12  45.1N  113.0W Ml=2.2  EMSC   WESTERN MONTANA              

P: 14OCT2020 127978    44.5N  115.2W 2.0-3.9 AABAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 12OCT2020 14:41:42  36.2N   89.5W Md=2.1  EMSC   TENNESSEE                     

P: 14OCT2020 127935    36.0N   90.0W 2.0-4.1 AAAAA  New Madrid area            

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

 

O: 13OCT2020 05:56:23  36.7N   98.4W ML=2.1  EMSC   OKLAHOMA                      

P:  9OCT2020 127709    37.0N   98.0W 2.0-3.8 BAAAA  Southern Plains            

 

O: 12OCT2020 19:29:46  35.1N   95.5W ML=2.5  EMSC   OKLAHOMA                     

P: 14OCT2020 127956    35.0N   96.0W 2.0-3.8 AAAAA  Southern Plains            

 

O: 12OCT2020 20:01:22  35.1N   95.6W ML=2.1  EMSC   OKLAHOMA                     

P: 14OCT2020 127956    35.0N   96.0W 2.0-3.8 AAAAA  Southern Plains            

 

HAWAII

 

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

 

MODERATE QUAKES IN CHIAPAS, MEXICO AND CRETE, GREECE

 

EARTHQUAKE SUMMARY FOR OCTOBER 11, 2020

 

The strongest earthquake felt in the world today was an M 5.5 off the coast of

Chiapas, Mexico. Today's event was reported by NEIC felt in Chiapas at Cacahoatan and Tuxtla Gutierrez and in Santa Catarina Pinula, Guatemala. A similar earthquake of M 5.5 last hit the area of Chiapas, Mexico on May 24, 2020 and on April 24, 2020. The only strong earthquake in the Chiapas area in the past year was an M 6.3 about 100 km south of today's M 5.5 on November 20, 2019. Forecast 127630 had expected today's event was likely about 100 km north of the epicenter was likely around October 9. This activity is at 144 degrees from the Banda Sea earthquake of August 21, 2020 (M 6.9) and was probably promoted by energy from this source.

 

O: 12OCT2020 05:12:13  14.5N   93.8W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 05:53:20  14.5N   93.8W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 04:13:56  14.9N   93.6W Mw=5.5  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 11OCT2020 17:11:27  15.0N   94.0W ML=3.8  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12OCT2020 04:17:42  15.1N   93.0W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  9OCT2020 127630    16.0N   93.0W 3.5-5.1 BAAAA  Chiapas, Mexico            

 

A regional aftershock of M 5.1 also occurred about 200 km east of Chiapas in Guatemala today. NEIC reported this earthquake of M 5.1 in Guatemala  was felt with intensity II-III in the area(s) of Guatemala at San Nicolas (IV) and Coatepeque, and Almolonga, Quezaltenano, San Marcos la Laguna, Antigua Guatemala and San Lucas Sacatepequez, Guatemala City, Santa Catarina, and Chisec Alta,  Verapaz. The last earthquake of M>=5.1 was an M 5.3 on September 27 and prior to that an M 5.8 on August 4, 2020. Forecast 127634 had expected today's event was likely in Guatemala around October 8.

 

This activity in Mexico and Guatemala may have been promoted by stresses associated with Hurricane Delta which lingered to the north of these epicenters before hitting Louisiana today and yesterday. This summary had expected this effect in previous issues as:

 

"Hurricane DELTA continued today South of Texas with winds up to 105 kts. It is expected to track to the west and north slowly over the next several days. Low pressures associated with this storm will tend to unload the areas to the south and encourage seismicity in Central America   possibility of a large regional earthquake in the area while DELTA is in the area." (October 9-10, 2020)

 

O: 12OCT2020 06:06:57  14.7N   91.6W Mw=5.1  EMSC   GUATEMALA                    

P:  8OCT2020 127634    13.0N   91.0W 3.5-5.1 BBAAA  Guatemala                  

 

A series of moderate earthquakes occurred in Crete, Greece today. The largest

of these were of M 5.1 and 5.2.  NEIC reported this earthquake of M 5.2 in Crete, Greece was felt with intensity II-III in the area(s) of Crete, Greece at Palaikastron, Skhisma, Ierapetra, Limin, Kato Gouvai, Karpathos, Khanion, Nea Alikanassos. NEIC reported aftershocks of M 4.1-5.1 in Greece  were felt with intensity II-III in the area(s) of Greece at Kato Gouvai, Iraklion.  The last earthquake in Crete within about 100 km of today's swarm occurred as an M 5.4 on December 10, 2019. An M 5.9 event occurred about 150 km to the southwest of today's activity on September 18. Forecast 127669 had expected today's event within about 100 km was likely around October 11. This activity is at 103 degrees from the earthquake in Chiapas, Mexico and the Oaxaca quake of June 23, 2020 (M 7.4) and was likely promoted by energy from these sources.

 

O: 12OCT2020 00:30:40  35.6N   26.3E Mw=5.1  EMSC   CRETE, GREECE

O: 12OCT2020 00:44:26  35.6N   26.3E mb=4.2  EMSC   CRETE, GREECE

O: 12OCT2020 02:38:53  35.6N   26.3E ML=4.0  EMSC   CRETE, GREECE

O: 12OCT2020 04:11:27  35.6N   26.3E Mw=5.2  EMSC   CRETE, GREECE

O: 12OCT2020 05:00:33  35.6N   26.3E mb=4.1  EMSC   CRETE, GREECE

O: 12OCT2020 01:11:58  35.7N   26.3E ML=4.0  EMSC   CRETE, GREECE                

P: 11OCT2020 127669    35.0N   25.0E 3.0-4.6 AAAAA  Aegean Sea                 

 

The strongest earthquake in the world today was an M 5.7 aftershock in the Easter Island region of the South Pacific. The mainshock in this series occurred yesterday on October 10 and was discussed in the previous issue of this summary as:

 

"The earthquake (of M 5.9) in Easter Island region was also nearly antipodal to the complete solar eclipse of June 21 over Pakistan and India. Delayed effects may have enhanced today's events. The Easter Island event of M 5.9 was the strongest within about 250 km of this epicenter since an M 5.9 on June 18, 2018 and prior to that an M 5.9 on May 10, 2012. Forecasts 127799 and 127800 had expected today's event within the southeast Pacific Rise around October 8-10." (October 10-11, 2020)

 

NEIC reported this earthquake of M 5.7 in the Easter Island region was felt with intensity II-III in the area(s) of the Easter Island region at Hangaroa Osterinsel, Smaller Territories of Chile.

 

O: 11OCT2020 14:41:20  28.5S  112.1W Mw=5.7  EMSC   EASTER ISLAND REGION         

P:  8OCT2020 127799    24.0S  112.0W 4.0-5.3 BCAAA  So. East Pacific Rise      

P: 10OCT2020 127800    27.0S  107.0W 4.0-5.4 ABCAA  So. East Pacific Rise      

 

An M 5.1 also occurred today in the Izu Islands off southeastern Honshu, Japan.

This is the strongest earthquake in the Izu Islands within about 200 km of today's epicenter in more than a year - following an M 6.3 on June 4, 2019 and may be an aftershock of that event. It occurred as Typhoon Chan-Hom was passing over the epicenter and was probably triggered by stresses related to that storm as expected in earlier issues of this summary:

 

"Tropical Storm Chan-Hom continued east of the Kyushu, Japan today with winds up to 90 kts. It is expected to track to the north and east reaching southern Honshu as a Typhoon around October 10. It could help trigger a strong earthquake upon arrival in that area of Japan." (October 10, 2020)

 

Forecast 127654 had exected today's earthquake was likely in early October

within about 150 km of today's epicenter.

 

O: 12OCT2020 00:28:31  29.4N  139.4E Mw=5.1  EMSC   IZU ISLANDS, JAPAN REGION    

P:  5OCT2020 127654    28.0N  139.0E 4.0-5.3 CBAAA  Bonin Islands              

 

The strongest earthquake in the U.S. or Canada today was an M 4.0 in Southern Alaska near Anchorage. A similar event of M 4.1 occurred on October 7, 2020 and prior to that an M 4.0 on September 10, 2020. The only other such event within about 100 km of today's epicenter occurred December 16, 2019 with M 4.0. The last such event with significantly larger magnitude than M 4.0 was an M 5.0 on October 4, 2019. Forecast 127766 expected moderate regional seismicity was likely around October 9.

 

NEIC reported this earthquake of M 3.8-4.0 in Southern Alaska  was felt with intensity II-III in the area(s) of Southern Alaska at Willow, Wasilla, Elmendorf AFB, Anchorage, Talkeetna.

 

O: 11OCT2020 21:55:34  61.7N  150.5W Mw=4.0  EMSC   SOUTHERN ALASKA              

P:  9OCT2020 127766    60.1N  150.6W 3.2-4.9 ABAAA  Central Alaska              

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O: 11OCT2020 12:39:10  23.9N  121.7E ML=4.2  TAI    Hualien, Taiwan              

P:  7OCT2020 127667    23.0N  121.0E 4.0-5.3 BAAAA  Taiwan                     

 

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

 

O: 11OCT2020 13:36:34  36.2N   71.0E mb=4.5  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  8OCT2020 127683    36.0N   72.0E 3.8-5.1 BAAAA  Hindu Kush/Pakistan        

 

NEIC reported this earthquake of M 4.5 in  Hindu Kush, Afghanistan was felt with intensity II-III in the area(s) of Hindu Kush, Afghanistan at Mahmod Raqui and at Panjakent, Tajikistan.

 

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

 

INDONESIA AND PHILIPPINES

 

O: 11OCT2020 09:36:31   0.7S  121.8E ML=4.0  EMSC   SULAWESI, INDONESIA          

P: 10OCT2020 127612     7.0S  123.0E 4.0-5.3 ADAAA  Flores Island area         

 

O: 11OCT2020 13:37:38   1.8N  126.3E mb=4.2  EMSC   MOLUCCA SEA                  

P:  5OCT2020 127604     1.0N  126.0E 4.0-5.3 CAAAA  Mindanao, Philippines      

 

O: 11OCT2020 19:13:48   4.1S   98.8E ML=4.4  EMSC   SOUTHWEST OF SUMATRA, INDONESI

O: 11OCT2020 11:09:23   4.6N   96.7E mb=4.7  EMSC   NORTHERN SUMATRA, INDONESIA  

P:  2OCT2020 127605     4.0N   94.0E 4.0-5.3 CACAA  Nicobar Islands             

 

O: 11OCT2020 15:08:13   4.9S  145.5E mb=4.4  EMSC   NEAR N COAST OF NEW GUINEA, PN

P:  5OCT2020 127620     4.0S  143.0E 4.0-5.3 CACAA  Papua New Guinea           

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 11OCT2020 22:30:48  11.4N   85.8W mb=4.5  EMSC   NICARAGUA                    

P:  5OCT2020 127643    11.0N   87.0W 3.5-5.1 CAAAA  Nicaragua                  

P:  9OCT2020 127629    10.0N   84.0W 3.5-5.1 ABBAA  Caribbean Sea              

 

O: 12OCT2020 06:06:57  14.7N   91.6W Mw=5.1  EMSC   GUATEMALA                    

P:  8OCT2020 127634    13.0N   91.0W 3.5-5.1 BBAAA  Guatemala                  

 

NEIC reported this earthquake of M 5.1 in Guatemala  was felt with intensity II-III in the area(s) of Guatemala at San Nicolas

(IV) and Coatepeque, and Almolonga, Quezaltenano, San Marcos la Laguna, Antigua Guatemala and San Lucas Sacatepequez, Guatemala City, Santa Catarina, and Chisec Alta,  Verapaz.

 

O: 12OCT2020 01:00:53  15.0S   74.1W mb=4.2  EMSC   NEAR COAST OF SOUTHERN PERU  

P: 10OCT2020 127784    16.0S   73.0W 4.0-5.4 AAAAA  So. Peru/Bolivia           

 

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

 

O: 12OCT2020 04:17:42  15.1N   93.0W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  9OCT2020 127630    16.0N   93.0W 3.5-5.1 BAAAA  Chiapas, Mexico            

 

O: 12OCT2020 00:01:01  17.2N   84.1W mb=4.3  EMSC   NORTH OF HONDURAS             

P:  3OCT2020 127643    17.0N   86.0W 3.5-5.1 CABAA  Nicaragua                  

 

O: 11OCT2020 08:48:37  17.9N   67.1W ML=3.2  EMSC   PUERTO RICO REGION

O: 11OCT2020 15:51:31  17.9N   67.1W ML=3.1  EMSC   PUERTO RICO REGION

O: 11OCT2020 07:21:00  18.0N   67.0W mb=4.0  EMSC   PUERTO RICO

O: 11OCT2020 07:50:01  17.9N   67.1W ML=3.2  EMSC   PUERTO RICO REGION           

P:  9OCT2020 127647    18.0N   67.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 11OCT2020 22:27:52  18.1N   64.3W ML=3.3  EMSC   VIRGIN ISLANDS REGION        

P: 11OCT2020 127638    19.0N   65.0W 3.0-5.0 AAAAA  Leeward Islands            

 

O: 12OCT2020 01:09:03  18.6N   69.6W ML=3.1  EMSC   DOMINICAN REPUBLIC           

P:  7OCT2020 127653    20.0N   69.0W 3.0-4.3 ABAAA  Bahamas/No. Caribbean      

 

O: 11OCT2020 16:55:01  19.3N  104.4W ML=4.3  EMSC   JALISCO, MEXICO              

P:  4OCT2020 127641    18.0N  104.0W 3.5-5.0 CBAAA  Michoacan, Mexico          

 

O: 11OCT2020 07:55:51  20.3N   70.9W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P:  7OCT2020 127648    20.0N   71.0W 3.4-4.8 BAAAA  Puerto Rico                

 

O: 12OCT2020 00:29:45  20.9S   68.9W mb=4.3  EMSC   ANTOFAGASTA, CHILE           

P:  5OCT2020 127789    22.0S   67.0W 4.0-5.4 CBBAA  Argentina                   

 

O: 11OCT2020 18:26:22  24.1S   66.9W mb=4.6  EMSC   SALTA, ARGENTINA             

P:  3OCT2020 127793    24.0S   69.0W 4.0-5.4 CABAA  Coast No. Chile            

 

O: 11OCT2020 20:20:39  24.2N  110.1W ML=3.0  EMSC   BAJA CALIFORNIA SUR, MEXICO  

P:  3OCT2020 127656    24.0N  109.0W 3.5-4.8 CAAAA  Gulf of California         

 

O: 11OCT2020 17:50:23  27.3N  111.3W ML=3.7  EMSC   GULF OF CALIFORNIA           

O: 11OCT2020 21:07:04  27.6N  111.6W ML=3.8  EMSC   GULF OF CALIFORNIA           

P:  3OCT2020 127656    24.0N  109.0W 3.5-4.8 CCBAA  Gulf of California         

 

 

O: 12OCT2020 05:12:13  14.5N   93.8W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 05:53:20  14.5N   93.8W ML=4.2  EMSC   OFF COAST OF CHIAPAS, MEXICO

O: 12OCT2020 04:13:56  14.9N   93.6W Mw=5.5  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 11OCT2020 17:11:27  15.0N   94.0W ML=3.8  EMSC   OFFSHORE CHIAPAS, MEXICO

O: 12OCT2020 04:17:42  15.1N   93.0W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  9OCT2020 127630    16.0N   93.0W 3.5-5.1 BAAAA  Chiapas, Mexico            

 

AFRICA AND EUROPE

 

O: 12OCT2020 00:30:40  35.6N   26.3E Mw=5.1  EMSC   CRETE, GREECE

O: 12OCT2020 00:44:26  35.6N   26.3E mb=4.2  EMSC   CRETE, GREECE

O: 12OCT2020 02:38:53  35.6N   26.3E ML=4.0  EMSC   CRETE, GREECE

O: 12OCT2020 04:11:27  35.6N   26.3E Mw=5.2  EMSC   CRETE, GREECE

O: 12OCT2020 05:00:33  35.6N   26.3E mb=4.1  EMSC   CRETE, GREECE

O: 12OCT2020 01:11:58  35.7N   26.3E ML=4.0  EMSC   CRETE, GREECE                

P: 11OCT2020 127669    35.0N   25.0E 3.0-4.6 AAAAA  Aegean Sea                 

 

SOUTHWEST PACIFIC

 

O: 11OCT2020 18:47:54   5.9S  153.7E mb=4.7  EMSC   NEW IRELAND REGION, P.N.G.   

P:  4OCT2020 127615     6.0S  153.0E 4.0-5.3 CAAAA  New Britain                

 

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

 

OCEAN RIDGES

 

O: 12OCT2020 00:39:58  62.5S   58.2W mb=4.9  EMSC   SOUTH SHETLAND ISLANDS       

P:  8OCT2020 127836    62.0S   58.0W 3.0-5.6 BAAAA  So. So. America            

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 12OCT2020 06:07:55  35.1S  178.4E ML=4.2  EMSC   OFF E. COAST OF N. ISLAND, N.Z

P:  7OCT2020 127817    37.0S  178.0E 3.0-4.4 BBAAA  North Island, N.Z.         

 

O: 11OCT2020 19:05:04  37.1S  176.8E ML=3.6  EMSC   NORTH ISLAND OF NEW ZEALAND  

P:  7OCT2020 127817    37.0S  178.0E 3.0-4.4 BAAAA  North Island, N.Z.         

 

O: 11OCT2020 14:04:31  47.3S  165.9E ML=4.4  EMSC   OFF W. COAST OF S. ISLAND, N.Z

P:  7OCT2020 127829    45.0S  167.0E 3.0-4.9 BCAAA  Southern S. Isl. N.Z.      

 

JAPAN AND KURIL ISLANDS

 

O: 12OCT2020 00:28:31  29.4N  139.4E Mw=5.1  EMSC   IZU ISLANDS, JAPAN REGION    

P:  5OCT2020 127654    28.0N  139.0E 4.0-5.3 CBAAA  Bonin Islands              

 

O: 11OCT2020 13:58:42  42.0N  142.7E mb=4.4  EMSC   HOKKAIDO, JAPAN REGION       

P:  5OCT2020 127720    41.0N  143.0E 3.5-5.3 CAAAA  Hokkaido, Japan            

P:  8OCT2020 127720    43.0N  141.0E 3.5-5.3 BAAAA  Hokkaido, Japan            

 

O: 11OCT2020 11:21:49  50.4N  157.0E mb=4.5  EMSC   KURIL ISLANDS                

P:  5OCT2020 127755    51.0N  158.0E 4.0-5.7 CAAAA  Kamchatka                  

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 11OCT2020 16:55:38  35.7N  117.5W Ml=2.5  EMSC   SOUTHERN CALIFORNIA          

O: 11OCT2020 17:51:11  35.9N  117.7W Ml=2.0  EMSC   CENTRAL CALIFORNIA           

P:  9OCT2020 127672    36.8N  117.5W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 11OCT2020 13:46:21  40.7N  124.2W Md=2.1  EMSC   NORTHERN CALIFORNIA

O: 12OCT2020 01:20:54  40.9N  123.4W Md=2.0  EMSC   NORTHERN CALIFORNIA

O: 11OCT2020 14:21:41  40.3N  123.7W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  7OCT2020 127731    40.0N  123.0W 2.5-4.3 BAAAA  Northern California        

P:  9OCT2020 127678    39.3N  123.2W 2.5-4.3 AAAAA  Central California         

 

O: 11OCT2020 12:27:32  38.2N  117.8W ml=2.0  EMSC   NEVADA

O: 11OCT2020 14:59:36  38.2N  118.0W ML=2.9  EMSC   NEVADA

O: 11OCT2020 17:30:24  38.2N  117.8W ML=2.2  EMSC   NEVADA

O: 12OCT2020 06:06:38  38.2N  118.1W ml=2.0  EMSC   NEVADA

O: 12OCT2020 05:59:25  38.1N  118.1W ml=2.3  EMSC   NEVADA                       

P:  7OCT2020 127674    37.9N  118.2W 2.5-4.4 BAAAA  California/Nevada area     

 

O: 11OCT2020 11:43:00  37.5N  121.8W Md=2.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O: 12OCT2020 01:16:40  37.8N  122.0W Md=2.3  EMSC   SAN FRANCISCO BAY AREA, CALIF.

O: 11OCT2020 16:36:46  37.2N  122.1W Md=2.7  EMSC   NORTHERN CALIFORNIA          

P:  4OCT2020 127676    37.5N  122.3W 2.5-4.3 CAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in Central California was felt with intensity II-III in the area(s) of Central California at Boulder Creek, Ben Lomond, Cupertino, Felton, Loma Mar, Los Gatos, Santa Crus, La Honda and Los Altos.

 

ALASKA

 

O: 11OCT2020 22:28:07  59.5N  153.6W ML=3.1  EMSC   SOUTHERN ALASKA              

P:  9OCT2020 127765    60.0N  153.5W 3.2-4.8 AAAAA  Central Alaska             

 

O: 11OCT2020 21:55:34  61.7N  150.5W Mw=4.0  EMSC   SOUTHERN ALASKA              

P:  9OCT2020 127766    60.1N  150.6W 3.2-4.9 ABAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 11OCT2020 20:38:24  47.6N  121.7W Ml=2.1  EMSC   WASHINGTON                    

P:  6OCT2020 127745    49.0N  123.0W 2.0-3.8 BBAAA  Washington state, U.S.     

 

ROCKY MOUNTAINS REGION

 

O: 11OCT2020 12:16:21  32.4N  101.6W mb=2.6  EMSC   WESTERN TEXAS                

P: 11OCT2020 127700    35.4N  101.8W 2.0-3.8 CAAAA  SW U.S.A                    

 

O: 11OCT2020 13:00:24  44.3N  115.2W Ml=2.1  EMSC   SOUTHERN IDAHO

O: 11OCT2020 22:05:47  44.3N  115.1W Ml=3.5  EMSC   SOUTHERN IDAHO

O: 11OCT2020 11:10:25  44.3N  115.2W Ml=2.6  EMSC   SOUTHERN IDAHO               

P:  5OCT2020 127726    44.5N  115.2W 2.0-3.8 CAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 12OCT2020 01:35:46  36.4N   90.8W Md=2.0  EMSC   ARKANSAS                     

P:  9OCT2020 127689    36.5N   89.6W 2.0-3.9 AAAAA  New Madrid area            

 

HAWAII

 

O: 11OCT2020 16:55:13  19.2N  155.4W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P:  7OCT2020 127636    19.2N  155.2W 3.0-4.3 BAAAA  Hawaii