STRONG QUAKE IN SAIPAN, MARIANAS PROBABLY PROMOTED BY TYPHOON KROSA

 

EARTHQUAKE SUMMARY FOR AUGUST 18, 2019

 

The strongest earthquake in the world today occurred as an M 5.9 in the northern Mariana Islands. NEIC reported it was felt with intensity II-III in San Roque and Garapan, Saipan, Northern Marianas; in Tinian MP and in Tamuning, Guam. Typhoon Krosa passed over this epicenter about a week ago and was probably a promotional factor in the enhancement of regional seismicity since that time. This summary had noted at the time:

 

"Typhoon KROSA (11W) continued today over the Volcano Islands with winds up to 105 kts. It is expected to track to the north and possibly to make landfall near Tokyo, Japan around August 15. Some seismic increases may be expected in the Mariana and Volcano Islands and later in eastern Honshu, Japan over the next several days. These areas are currently under a seismic watch through mid-August." (August 9-12, 2019)

 

A similar M 5.9 hit about 200 km northeast of this on October 26, 2018, a likely aftershock of an M 6.4 on August 28, 2018, the largest in the region since February, 2005. Tropical Storm Jebi was suggested as promotional factor in the August, 2018 event as:

 

"TS Jebi (TD 25W) continued today east of Guam with winds up to 45 kts. It is expected to track to the northwest reaching the Mariana and Volcano Islands around August 30-31. Seismicity is expected to be enhanced in these regions as Typhoon Jebi

passes through the region." (August 26-28. 2018)

 

Forecast 117986 had expected today's Mariana Islands activity to the south around August 17.

 

O: 18AUG2019 18:55:15  16.3N  146.6E mb=4.9  EMSC   ANATAHAN REG, N. MARIANA ISLAN

O: 18AUG2019 18:00:26  16.7N  146.3E mb=5.9  EMSC   ANATAHAN REG, N. MARIANA ISLAN

P: 17AUG2019 117986    14.0N  145.0E 4.0-5.4 ACAAA  So. Marianas/Guam          

 

Another moderate earthquake occurred in Kansas today. This event of M 4.1 was reported by NEIC to have been felt with intensity V in Hutchinson and South Hutchinson and in Arlington, Kansas. Intensity II-III was reported from Partridge, Nickerson, Haven, Buhler, Pretty Prairie, and Sterling, Kansas. This is probably an aftershock of the M 4.7 in Kansas which occurred August 16 and which was described at the time in this summary as:

 

"A moderate earthquake of M 4.7 was widely felt in Kansas today. NEIC reported this event was felt with maximum intensity VI in Hutchinson, Kansas and V in South Hutchinson and IV in Partridge, Nickerson, Buhler and II-III in Haven, Pretty Prairie, Arlington, Kansas. It was probably triggered by high tidal stresses associated with the full moon on August 15. Earthquakes in this section of the U.S. often occur within a couple of days of full and new moons as noted for example, in previous issues of this summary" (August 16, 2019)

 

 

"Today's earthquake of M 4.7 is the strongest in Kansas or Oklahoma since an M 5.0 on November 7, 2016 nearly three years ago. Forecasts 118042 and 118043 had expected today's activity was likely around August 16-17. This earthquake is located at 144 degrees from the M 6.8 in Sumatra of August 2 and was probably promoted by energy from that source." (August 17, 2019)

 

O: 18AUG2019 08:45:29  38.0N   98.0W Mw=4.1  EMSC   KANSAS                       

P: 16AUG2019 118043    37.0N   98.0W 2.0-4.1 AAAAA  Southern Plains            

P: 17AUG2019 118042    39.0N   99.0W 2.0-4.1 AAAAA  Southern Plains            

 

An unusual earthquake of M 4.7 hit the area northeast of Australia today continuing unusual seismicity to the north of Australia over the past month. The only similar or larger event within about 300 km of this epicenter east of

Australia in the past 30 years was an M 5.7 on August 18, 2016, exactly three years ago. When this 2016 earthquake occurred this summary noted the coincidence with TS Fiona and the full moon. As today's event also occurred new full moon, a tidal promotion may be implied. The summary from August 18, 2016 had noted in this regard:

 

"The strongest and most unusual earthquake in the world today was an M 5.7 in Queensland, Australia. This is the strongest earthquake ever recorded off northern Queensland within about 500 km of this epicenter. It was followed by a series of light aftershocks. Simultaneously with this earthquake, the first tropical storm in the Atlantic season came to life near the antipode of this earthquake. This summary has previously reported on the connection between strong tropical storms in the Atlantic and subsequent moderate earthquakes in or near Australia. This appears to be another example of this type of interaction. Another promoter of this event may have been tidal stresses as today is the full moon and the quake occurred near local solar noon." (August 18, 2016)

 

The 2016 quake was associated with a strong M 7.5 in the South Pacific near the South Sandwich Islands (see History section). Today’s event was also coincident with event of M 5.0 and 5.1 in the South Sandwich Islands which were at 103 degrees from the M 6.8 in Sumatra of August 2.

 

Today's epicenter is at 103 degrees from the July 6, 2019 M 7.1 in Central California. Seismicity often increases at this distance from large event, probably related to surface energy and today's event in Australia may have been promoted from

California.

 

O: 18AUG2019 11:38:41  21.0S  151.9E mb=4.7  EMSC   EAST OF AUSTRALIA            

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: 18AUG2019 07:52:44  55.0N  164.7E mb=4.5  EMSC   KOMANDORSKIYE OSTROVA REGION 

P: 16AUG2019 118090    53.0N  170.0E 4.0-5.5 ABCAA  Near Islands               

 

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

 

INDONESIA AND PHILIPPINES

 

O: 18AUG2019 10:05:37   0.7S  127.4E ML=4.2  EMSC   HALMAHERA, INDONESIA         

O: 19AUG2019 05:53:47   0.8S  128.3E mb=4.8  EMSC   HALMAHERA, INDONESIA         

P: 17AUG2019 117949     1.0S  127.0E 4.0-5.3 AAAAA  Ceram area                 

 

O: 18AUG2019 09:02:23   1.6N  127.2E ML=4.1  EMSC   HALMAHERA, INDONESIA         

P: 13AUG2019 117940     1.0N  126.0E 4.0-5.3 BAAAA  Mindanao, Philippines      

 

O: 18AUG2019 22:05:25   1.6S  127.0E ML=4.5  EMSC   KEPULAUAN SULA, INDONESIA    

P: 17AUG2019 117949     1.0S  127.0E 4.0-5.3 AAAAA  Ceram area                 

 

O: 18AUG2019 19:18:55   2.7N   97.5E ML=4.2  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 19AUG2019 117943     1.0N   98.0E 4.0-5.3 ABAAA  So. Sumatera               

 

O: 18AUG2019 14:04:56   3.3S  140.0E ML=4.0  EMSC   PAPUA, INDONESIA             

P: 15AUG2019 117958     3.0S  142.0E 4.0-5.4 BABAA  Papua New Guinea           

 

O: 19AUG2019 01:57:52   3.8N  126.0E ML=4.8  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 21AUG2019 117941     3.0N  126.0E 4.0-5.3 AAAAA  Mindanao, Philippines      

 

O: 19AUG2019 04:00:27   8.1S  108.1E ML=4.6  EMSC   JAVA, INDONESIA              

P: 20AUG2019 117959     9.0S  110.0E 4.0-5.3 AABAA  So. of Java                

 

O: 18AUG2019 07:06:42  11.3S  124.0E mb=5.0  EMSC   SOUTH OF TIMOR                

P: 18AUG2019 117951     8.0S  124.0E 4.0-5.3 ACAAA  Flores Island area         

 

O: 18AUG2019 18:55:15  16.3N  146.6E mb=4.9  EMSC   ANATAHAN REG, N. MARIANA ISLAN

O: 18AUG2019 18:00:26  16.7N  146.3E mb=5.9  EMSC   ANATAHAN REG, N. MARIANA ISLAN

P: 17AUG2019 117986    14.0N  145.0E 4.0-5.4 ACAAA  So. Marianas/Guam          

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 18AUG2019 09:28:28   2.3S   79.3W Mw=5.0  EMSC   NEAR COAST OF ECUADOR        

P: 21AUG2019 117950     1.0S   81.0W 4.0-5.4 BBBAA  Ecuador                    

 

NEIC reported this earthquake of M 5.0 near the coast of Ecuador  was felt with intensity II-III in the area(s) of Ecuador at Eloy Alfaro, Azogues, Guayaquil, Cuenca, Santa Lucia, Jipijapa and Canamanga.

 

O: 19AUG2019 05:37:43  12.3S   75.3W mb=4.7  EMSC   CENTRAL PERU                 

P: 13AUG2019 118117    11.0S   74.0W 4.0-5.4 CBAAA  Central Peru               

 

NEIC reported this earthquake of M 4.7 in Central Peru  was felt with intensity VI in Huayucachi, Junin, Peru and II-III in the area(s) of Central Peru in San Luis and Lima.

 

O: 19AUG2019 03:04:59  16.0N   98.7W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

O: 19AUG2019 04:06:46  16.0N   98.7W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

P: 18AUG2019 117983    16.0N   98.0W 3.5-5.2 AAAAA  Oaxaca, Mexico             

 

O: 19AUG2019 03:26:03  16.4N   86.9W mb=4.2  EMSC   OFFSHORE HONDURAS            

P: 18AUG2019 117981    17.0N   86.0W 3.5-5.0 AAAAA  Nicaragua                  

 

NEIC reported this earthquake of M 4.2 in Honduras  was felt with intensity II-III in the area(s) of Honduras at Sandy Bay, La Ceiba and Corozal.

 

O: 19AUG2019 05:42:16  17.6N   98.6W ML=4.2  EMSC   GUERRERO, MEXICO             

P: 18AUG2019 117983    16.0N   98.0W 3.5-5.2 ABAAA  Oaxaca, Mexico             

 

O: 19AUG2019 01:49:19  18.2N   64.1W Md=3.2  EMSC   VIRGIN ISLANDS REGION        

P: 20AUG2019 117973    19.0N   65.0W 3.0-4.8 AAAAA  Leeward Islands            

 

O: 18AUG2019 12:51:46  18.2N  100.3W ML=4.3  EMSC   GUERRERO, MEXICO             

P: 14AUG2019 117984    18.0N  100.0W 3.5-5.0 BAAAA  Oaxaca, Mexico             

 

O: 19AUG2019 05:28:32  18.5N   69.0W Md=3.3  EMSC   DOMINICAN REPUBLIC           

P: 21AUG2019 117985    19.0N   68.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 19AUG2019 00:28:12  18.8S   67.9W Mw=4.1  EMSC   ORURO, BOLIVIA               

P: 21AUG2019 118122    19.0S   69.0W 4.0-5.3 AAAAA  So. Peru/Bolivia            

 

O: 18AUG2019 19:13:59  20.2S   68.8W Mw=4.3  EMSC   TARAPACA, CHILE              

P: 17AUG2019 118126    21.0S   68.0W 4.0-5.4 AAAAA  Argentina                  

 

O: 18AUG2019 07:53:30  28.1N  112.1W ML=3.3  EMSC   GULF OF CALIFORNIA           

P: 14AUG2019 117992    28.0N  112.0W 3.5-4.8 BAAAA  Gulf of California         

 

 

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

 

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

 

OCEAN RIDGES

 

O: 19AUG2019 06:06:05  59.8S   27.8W mb=5.1  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 15AUG2019 118152    57.0S   27.0W 4.0-5.5 BCAAA  So. Sandwich Islands       

 

O: 19AUG2019 03:44:17  60.6S   25.4W mb=5.2  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 16AUG2019 118152    61.0S   26.0W 4.0-5.3 BAAAA  Southern  Ocean            

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 18AUG2019 11:38:41  21.0S  151.9E mb=4.7  EMSC   EAST OF AUSTRALIA            

 

JAPAN AND KURIL ISLANDS

 

O: 18AUG2019 10:06:41  38.6N  139.4E mb=4.5  EMSC   NEAR WEST COAST OF HONSHU, JAP

P: 17AUG2019 118029    38.0N  141.0E 4.0-5.3 AAAAA  Off East Coast Honshu      

 

NEIC reported this earthquake of M 4.5 in northwestern Honshu, Japan was felt with intensity II-III in the area(s) of Niigata and Nagoaka, Japan.

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 18AUG2019 20:33:38  31.8N  115.9W ML=3.4  EMSC   BAJA CALIFORNIA, MEXICO      

P: 14AUG2019 118033    31.9N  116.3W 2.5-4.3 BAAAA  So. California             

 

O: 19AUG2019 01:24:12  33.6N  116.8W Ml=2.8  EMSC   SOUTHERN CALIFORNIA          

O: 18AUG2019 07:10:42  34.2N  116.9W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 20AUG2019 118036    34.1N  117.4W 2.5-4.4 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.8 in Southern California was felt with intensity IV in Hemet and Aguanga, California and II-III in the area(s) of Hemet, Anza, Murrieta, Escondido, California.

 

O: 18AUG2019 23:21:53  36.6N  121.2W Md=2.0  EMSC   CENTRAL CALIFORNIA           

O: 19AUG2019 04:25:13  37.8N  122.2W Md=2.6  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 17AUG2019 118011    36.8N  121.3W 2.5-4.3 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.6 in the San Francisco Bay area, California was felt with intensity II-III in the area(s) of Oakland, San Leandro, Castro Valley, Oakland, and Alameda, California.

 

O: 18AUG2019 17:44:23  40.3N  122.1W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P:  8AUG2019 117840    40.6N  122.4W 2.5-4.3 DAAAA  Northern California        

 

O: 19AUG2019 04:06:51  40.5N  124.7W Md=2.3  EMSC   OFFSHORE NORTHERN CALIFORNIA 

O: 19AUG2019 03:03:51  40.6N  124.3W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P: 15AUG2019 118066    40.3N  124.7W 2.5-4.3 BAAAA  Off Coast of No. Calif     

 

 

O: 18AUG2019 22:02:28  35.7N  117.5W Ml=2.6  EMSC   SOUTHERN CALIFORNIA

O: 18AUG2019 18:59:18  36.1N  117.9W Ml=2.0  EMSC   CENTRAL CALIFORNIA

O: 18AUG2019 18:56:43  35.7N  117.5W ML=3.3  EMSC   SOUTHERN CALIFORNIA

O: 18AUG2019 18:48:08  35.6N  117.4W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 18AUG2019 18:27:42  36.1N  117.9W ML=3.1  EMSC   CENTRAL CALIFORNIA

O: 18AUG2019 18:24:10  35.7N  117.5W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 18AUG2019 16:20:49  36.1N  117.9W ML=2.8  EMSC   CENTRAL CALIFORNIA

O: 18AUG2019 16:08:34  36.1N  117.9W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 18AUG2019 16:04:20  36.1N  117.9W Ml=2.3  EMSC   CENTRAL CALIFORNIA

O: 18AUG2019 13:22:44  36.1N  117.9W Ml=2.2  EMSC   CENTRAL CALIFORNIA

O: 18AUG2019 08:25:34  35.9N  117.7W Ml=2.2  EMSC   CENTRAL CALIFORNIA

O: 18AUG2019 08:23:59  35.9N  117.7W Ml=2.6  EMSC   CENTRAL CALIFORNIA

O: 18AUG2019 07:42:25  36.1N  117.9W ML=3.3  EMSC   CENTRAL CALIFORNIA

O: 19AUG2019 00:09:12  35.7N  117.5W ML=3.8  EMSC   SOUTHERN CALIFORNIA          

P: 16AUG2019 118039    35.8N  117.6W 2.5-4.4 BAAAA  So. California             

 

ALASKA

 

 

O: 19AUG2019 02:35:39  56.2N  149.6W ML=3.9  EMSC   GULF OF ALASKA               

 

O: 18AUG2019 10:14:24  68.8N  146.2W ML=3.0  EMSC   NORTHERN ALASKA              

O: 18AUG2019 14:29:33  69.2N  147.9W ML=3.2  EMSC   NORTHERN ALASKA              

P: 17AUG2019 118108    69.2N  144.4W 3.2-4.8 AAAAA  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: 18AUG2019 21:29:10  31.3N  103.6W ML=2.6  EMSC   WESTERN TEXAS                

O: 19AUG2019 03:10:31  31.7N  104.3W ML=2.6  EMSC   WESTERN TEXAS                

P: 11AUG2019 117802    31.4N  103.8W 2.0-3.9 CAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 18AUG2019 09:07:12  35.1N   95.4W Mw=3.7  EMSC   OKLAHOMA                     

O: 19AUG2019 00:06:05  35.8N   99.2W ML=2.3  EMSC   OKLAHOMA                     

P: 15AUG2019 118042    35.0N   96.0W 2.0-3.8 BABAA  Southeast U.S.             

 

NEIC reported this earthquake of M 3.7 in Oklahoma was felt with intensity IV in Stigler and Checotah, Oklahoma and II-III in the area(s) of Oklahoma at Kinta, Quinton, Eufaula, Muskogee and Park Hill.

 

O: 18AUG2019 08:45:29  38.0N   98.0W Mw=4.1  EMSC   KANSAS                       

P: 16AUG2019 118043    37.0N   98.0W 2.0-4.1 AAAAA  Southern Plains            

P: 17AUG2019 118042    39.0N   99.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 18AUG2019 07:25:24  36.2N   82.8W Md=2.2  EMSC   EASTERN TENNESSEE            

P: 21AUG2019 118022    38.0N   87.0W 2.0-3.8 BBCAA  New Madrid area            

 

HAWAII

 

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

 

MODERATE QUAKE SHAKES BURMA

 

EARTHQUAKE SUMMARY FOR AUGUST 17, 2019

 

The strongest earthquake in the world today was an M 5.3 in Myanmar/Burma. It was followed 14 minutes later by an aftershock of M 4.7. No major damage was reported with these quakes, but some minor, local damage is likely. These are located north of the Andaman and Nicobar Islands of India. The last earthquake within about 200 km of today's epicenters with M>5.3 occurred as an M 6.0 on January 11, 2018 and prior to that in April, 2013. Forecast 117964 had expected today's activity to the south in mid-August.

 

NEIC reported this earthquake of M 5.3 in Burma  was felt with intensity IV in Mandalay, Myanmar and in   Burma with intensity II-III in the area(s) of Tharrawaddy and Rangoon, Myanmar.

 

O: 18AUG2019 03:38:15  18.5N   94.6E mb=4.7  EMSC   MYANMAR                      

O: 18AUG2019 03:24:25  18.6N   94.7E Mw=5.3  EMSC   MYANMAR                      

P: 14AUG2019 117964    16.0N   93.0E 4.0-5.4 BCBAA  Andaman Islands            

 

The strongest earthquake in the U.S. or Canada today was an M 4.3 in the Alaska Peninsula near Unimak Island. The last earthquake within about 100 km of this epicenter with M>=4.3 was an M 4.4 on July 3, 2019 and prior to that an M 4.4 on April 8, 2019. The last of significantly larger magnitude in this region was an M 6.0 on December 31, 2018. Today's event is probably an aftershock of the December event.  Forecast 118097 had expected today's epicenter would be active within about 50 km around August 21.

 

O: 17AUG2019 20:33:44  54.2N  161.6W mb=4.3  EMSC   ALASKA PENINSULA             

P: 21AUG2019 118097    54.7N  161.2W 3.5-4.8 BAAAA  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: 18AUG2019 03:38:15  18.5N   94.6E mb=4.7  EMSC   MYANMAR                      

O: 18AUG2019 03:24:25  18.6N   94.7E Mw=5.3  EMSC   MYANMAR                       

P: 14AUG2019 117964    16.0N   93.0E 4.0-5.4 BCBAA  Andaman Islands            

 

O: 17AUG2019 20:48:02  23.4N  118.6E mb=4.3  EMSC   TAIWAN STRAIT                

O: 17AUG2019 14:52:10  23.7N  121.5E ML=4.5  EMSC   TAIWAN                       

O: 18AUG2019 04:05:14  23.7N  121.6E mb=5.0  EMSC   TAIWAN                       

O: 18AUG2019 04:05:14  23.8N  121.5E ML=4.8  TAI    Hualien, Taiwan              

O: 17AUG2019 14:52:11  23.8N  121.5E ML=4.5  TAI    Hualien, Taiwan              

O: 17AUG2019 14:52:06  23.8N  121.5E ML=4.4  TAI    Hualien, Taiwan              

P: 19AUG2019 118001    23.0N  121.0E 4.0-5.3 AAAAA  Taiwan                     

 

 

NEIC reported this earthquake of M 5.0 in Taiwan was felt with intensity II-III in the area(s) of Taiwan at Taipei and Kaohsiung.

NEIC reported this earthquake of M 4.3 west of Taiwan was felt with intensity II-III in the area(s) of Xiamen Fujian, China.

The M 4.8 was reported by CWB to have been felt with intensity V in Hualien, II in Nantou, Taitung and Taichung and I in Yilan, Chiayi, Yunlin, Changhua, Miaoli Counties, Taiwan.

The M 4.5 was reported felt with intensity IV in Hualien and I in Taitung, Nantou, Taichung, Yilan and Yunlin Counties, Taiwan

The M 4.4 was reported felt with intensity IV in Hualien and I in Taitung, Nantou and Taichung Counties, Taiwan

 

O: 18AUG2019 06:28:33  24.0N   93.9E mb=4.9  EMSC   MANIPUR, INDIA REGION        

P: 17AUG2019 117997    24.0N   94.0E 4.0-5.3 AAAAA  Myanmar                    

 

O: 18AUG2019 03:12:58  43.9N   76.8E mb=4.6  EMSC   EASTERN KAZAKHSTAN           

O: 18AUG2019 00:38:52  44.1N   79.7E mb=4.1  EMSC   EASTERN KAZAKHSTAN           

O: 17AUG2019 23:07:44  44.2N   79.8E mb=4.5  EMSC   EASTERN KAZAKHSTAN           

P: 21AUG2019 118059    40.0N   78.0E 4.0-5.3 BCBAA  Kirgizstan/Xinjiang        

 

NEIC reported this earthquake of M 4.3 in Kazakhstan was felt with intensity V in the area(s) of Taldikorgan Almaty, Kazakhstan.

 

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

 

INDONESIA AND PHILIPPINES

 

O: 17AUG2019 09:12:29   0.1N  126.7E ML=4.3  EMSC   MOLUCCA SEA                  

P: 17AUG2019 117949     1.0S  127.0E 4.0-5.3 ABAAA  Ceram area                 

 

O: 17AUG2019 13:54:45   3.4S  101.7E mb=4.8  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 15AUG2019 117961     6.0S  102.0E 4.0-5.5 ACAAA  So. of Sumatera            

 

O: 17AUG2019 12:00:05   4.0N  126.7E ML=4.2  EMSC   KEPULAUAN TALAUD, INDONESIA  

P: 19AUG2019 117939     4.0N  127.0E 4.0-5.3 AAAAA  Halmahera                   

 

O: 18AUG2019 04:19:20   5.5S  131.4E mb=4.5  EMSC   BANDA SEA                    

P: 14AUG2019 117946     7.0S  130.0E 4.0-5.3 BBBAA  Banda Sea                  

 

O: 17AUG2019 08:51:07   5.9S  102.3E mb=4.5  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 15AUG2019 117961     6.0S  102.0E 4.0-5.5 AAAAA  So. of Sumatera            

 

O: 17AUG2019 17:23:35   7.1S  108.9E ML=4.6  EMSC   JAVA, INDONESIA              

P: 20AUG2019 117959     9.0S  110.0E 4.0-5.3 BBAAA  So. of Java                

 

O: 17AUG2019 12:42:43   9.4S  120.7E ML=4.4  EMSC   SUMBA REGION, INDONESIA      

P: 21AUG2019 117951     7.0S  120.0E 4.0-5.3 BCAAA  Flores Island area         

 

O: 17AUG2019 15:37:40   9.5S  124.0E mb=4.5  EMSC   TIMOR REGION                 

P: 18AUG2019 117951     8.0S  124.0E 4.0-5.3 ABAAA  Flores Island area         

 

O: 17AUG2019 23:55:51  18.8N  146.1E mb=4.5  EMSC   PAGAN REG., N. MARIANA ISLANDS

P: 17AUG2019 117986    14.0N  145.0E 4.0-5.4 ACAAA  So. Marianas/Guam          

 

O: 17AUG2019 20:50:39  10.9S  113.8E ML=4.0  EMSC   SOUTH OF JAVA, INDONESIA     

P: 15AUG2019 117960     9.0S  114.0E 4.0-5.3 ABAAA  So. of Java                

 

 

CENTRAL AND SOUTH AMERICA

 

O: 17AUG2019 09:18     30.0S   71.7W mb=4.2  GUC    Coquimbo at Andacollo, La Sere

P: 17AUG2019 118140    30.0S   70.0W 4.0-5.3 AAAAA  Coast Central Chile        

 

CSN reported this earthquake was felt with intensity   IV in  Coquimbo at Andacollo, La Serena and Vicuna and III in Coquimbo, Chile.

 

O: 17AUG2019 12:34:34  12.2N   88.0W mb=4.8  EMSC   NEAR COAST OF NICARAGUA      

P: 18AUG2019 117981    12.0N   87.0W 3.5-5.0 AAAAA  Nicaragua                  

 

NEIC reported this earthquake of M 4.8 off the coast of Nicaragua  was felt with intensity IV in the area(s) of Antiguo Cuscatlan, El Salvador.

 

O: 17AUG2019 15:13:07  15.9N   98.1W ML=4.3  EMSC   OFFSHORE OAXACA, MEXICO      

P: 18AUG2019 117983    16.0N   98.0W 3.5-5.2 AAAAA  Oaxaca, Mexico             

 

O: 18AUG2019 02:24:45  16.4N   95.0W ML=4.1  EMSC   OAXACA, MEXICO                

O: 17AUG2019 11:16:51  16.4N   95.2W ML=4.0  EMSC   OAXACA, MEXICO               

P: 18AUG2019 117966    16.0N   94.0W 3.5-5.0 AAAAA  Chiapas, Mexico            

 

O: 17AUG2019 19:26:11  17.8N   69.4W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 21AUG2019 117985    19.0N   68.0W 3.4-4.9 BBAAA  Puerto Rico                

 

O: 17AUG2019 15:45:12  18.1N   99.5W ML=4.1  EMSC   GUERRERO, MEXICO             

P: 14AUG2019 117984    18.0N  100.0W 3.5-5.0 BAAAA  Oaxaca, Mexico             

 

O: 18AUG2019 02:20:56  19.5N   70.4W ML=3.5  EMSC   DOMINICAN REPUBLIC           

O: 17AUG2019 12:23:31  19.7N   70.1W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P: 21AUG2019 117985    19.0N   68.0W 3.4-4.9 BABAA  Puerto Rico                

 

O: 18AUG2019 01:50:20  19.7S   64.0W mb=4.6  EMSC   CHUQUISACA, BOLIVIA          

P: 14AUG2019 118127    23.0S   64.0W 4.0-5.3 BCAAA  Argentina                  

 

O: 17AUG2019 19:47:50  20.0N   73.3W ML=3.7  EMSC   HAITI REGION                 

P: 21AUG2019 117985    19.0N   68.0W 3.4-4.9 BACAA  Puerto Rico                

 

O: 18AUG2019 04:57:07  25.6N  110.2W ML=4.2  EMSC   GULF OF CALIFORNIA           

P: 14AUG2019 117992    24.0N  109.0W 3.5-4.8 BBAAA  Gulf of California         

 

O: 17AUG2019 09:18:19  30.0S   71.7W mb=4.6  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 17AUG2019 118140    30.0S   70.0W 4.0-5.3 AAAAA  Coast Central Chile        

 

 

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

 

AFRICA AND EUROPE

 

O: 17AUG2019 21:35:12  38.7N   14.7E mb=4.1  EMSC   SICILY, ITALY                

P: 21AUG2019 118020    39.0N   14.0E 3.0-4.3 BAAAA  Mediterranean/Sicily       

 

O: 17AUG2019 10:27:49  63.7N   21.3W ML=3.0  EMSC   ICELAND REGION               

P: 19AUG2019 118109    62.0N   26.0W 3.0-4.3 ABCAA  Iceland area               

 

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

 

SOUTHWEST PACIFIC

 

O: 17AUG2019 08:40:08  11.5S  166.3E mb=4.6  EMSC   SANTA CRUZ ISLANDS           

P:  9AUG2019 117903    11.0S  166.0E 4.0-5.3 CAAAA  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: 17AUG2019 21:54:01  31.2S  177.4W mb=4.8  EMSC   KERMADEC ISLANDS REGION      

P: 18AUG2019 118141    30.0S  178.0W 4.0-5.3 ABAAA  No. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 17AUG2019 22:36:06  22.6N  142.0E mb=4.3  EMSC   VOLCANO ISLANDS, JAPAN REGION

P: 21AUG2019 118002    23.0N  143.0E 4.0-5.3 BAAAA  Volcano Islands            

 

O: 17AUG2019 22:28:41  30.9N  142.5E mb=5.0  EMSC   IZU ISLANDS, JAPAN REGION    

P: 15AUG2019 118028    31.0N  141.0E 4.0-5.3 AAAAA  Off East Coast Honshu      

 

O: 17AUG2019 12:54:48  46.0N  152.0E mb=4.2  EMSC   KURIL ISLANDS                

O: 17AUG2019 07:18:06  46.8N  152.7E mb=4.6  EMSC   KURIL ISLANDS                

P: 21AUG2019 118075    49.0N  153.0E 3.5-5.3 BCAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 18AUG2019 06:45:48  35.7N  117.5W Ml=2.6  EMSC   SOUTHERN CALIFORNIA

O: 18AUG2019 05:05:47  36.1N  117.9W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 18AUG2019 05:02:42  36.1N  117.9W Ml=2.6  EMSC   CENTRAL CALIFORNIA

O: 18AUG2019 04:37:16  35.6N  117.4W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 18AUG2019 02:17:06  36.1N  117.9W Ml=2.3  EMSC   CENTRAL CALIFORNIA

O: 17AUG2019 23:16:02  35.3N  117.9W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 17AUG2019 17:28:38  36.1N  117.9W Ml=2.0  EMSC   CENTRAL CALIFORNIA

O: 17AUG2019 17:24:09  36.1N  117.9W Ml=2.6  EMSC   CENTRAL CALIFORNIA

O: 17AUG2019 13:37:49  36.1N  117.9W Ml=2.6  EMSC   CENTRAL CALIFORNIA

O: 17AUG2019 11:55:31  35.9N  117.7W ML=3.1  EMSC   CENTRAL CALIFORNIA

O: 17AUG2019 11:51:07  35.6N  117.5W Ml=2.3  EMSC   SOUTHERN CALIFORNIA          

P: 16AUG2019 118039    35.8N  117.6W 2.5-4.4 AAAAA  So. California             

 

O: 17AUG2019 14:20:58  32.7N  115.6W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

O: 17AUG2019 21:07:12  33.0N  115.9W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 17AUG2019 118035    32.9N  115.6W 2.5-4.3 AAAAA  So. California             

 

O: 18AUG2019 03:49:55  36.0N  121.0W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P: 21AUG2019 118010    36.4N  121.0W 2.5-4.3 BAAAA  Central California         

 

O: 17AUG2019 11:22:15  37.5N  121.8W Md=2.4  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 13AUG2019 118011    37.3N  121.6W 2.5-4.3 BAAAA  Central California          

 

O: 17AUG2019 23:40:42  37.7N  119.0W Md=2.1  EMSC   LONG VALLEY AREA, CALIFORNIA 

P: 20AUG2019 118007    37.3N  119.4W 2.5-4.3 BAAAA  California/Nevada area     

 

O: 17AUG2019 22:52:11  38.0N  121.9W Md=2.2  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 13AUG2019 118011    37.3N  121.6W 2.5-4.3 BAAAA  Central California         

 

 

ALASKA

 

O: 17AUG2019 20:33:44  54.2N  161.6W mb=4.3  EMSC   ALASKA PENINSULA             

P: 21AUG2019 118097    54.7N  161.2W 3.5-4.8 BAAAA  Unimak Islands, Aleutians  

 

O: 18AUG2019 03:31:20  66.3N  156.9W ML=3.1  EMSC   NORTHERN ALASKA              

O: 18AUG2019 02:48:38  66.3N  156.9W ML=3.3  EMSC   NORTHERN ALASKA              

P: 14AUG2019 118107    65.2N  155.4W 3.2-4.8 BBAAA  Northern Alaska            

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 17AUG2019 11:41:53  44.4N  128.5W ML=3.3  EMSC   OFF COAST OF OREGON          

P: 10AUG2019 117842    43.9N  128.4W 3.0-4.3 CAAAA  Off Coast of Oregon        

P: 14AUG2019 118067    44.5N  129.8W 3.0-4.4 BABAA  Off Coast of Oregon        

 

O: 17AUG2019 12:47:50  47.8N  120.2W Md=2.3  EMSC   WASHINGTON                   

 

ROCKY MOUNTAINS REGION

 

O: 18AUG2019 04:02:46  39.3N  112.0W ML=2.5  EMSC   UTAH                         

P: 17AUG2019 118008    38.7N  115.4W 2.5-4.3 AACAA  California/Nevada area     

 

EASTERN U.S./CANADA

 

O: 18AUG2019 03:19:37  35.1N   95.4W mb=2.5  EMSC   OKLAHOMA                     

O: 17AUG2019 23:18:05  35.2N   95.4W ML=3.4  EMSC   OKLAHOMA                     

P: 15AUG2019 118042    35.0N   96.0W 2.0-3.8 AAAAA  Southeast U.S.             

 

NEIC reported this earthquake of M 2.6 in Oklahoma was felt with intensity II-III in the area(s) of Quinton and Webbers Falls, Oklahoma.

 

O: 17AUG2019 15:22:29  36.8N   98.1W mb=2.7  EMSC   OKLAHOMA                      

P: 16AUG2019 118043    37.0N   98.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 17AUG2019 09:56:35  38.1N   98.0W mb=2.8  EMSC   KANSAS                       

P: 17AUG2019 118042    39.0N   99.0W 2.0-4.1 AAAAA  Southern Plains             

 

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

 

HAWAII

 

O: 17AUG2019 09:46:43  19.0N  156.2W Ml=3.1  EMSC   HAWAII REGION, HAWAII        

P: 17AUG2019 117971    19.9N  155.4W 3.0-4.4 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.1 southwest of Hawaii  was felt with intensity II-III in the area(s) of southwest of Hawaii at Naalehu.

 

MODERATE QUAKES OFF OREGON AND IN OKLAHOMA RELATED TO FULL MOON

 

EARTHQUAKE SUMMARY FOR AUGUST 16, 2019

 

The strongest earthquake in the U.S. or Canada today was an M 5.4 off the coast of Oregon. NEIC reported it may have been felt lightly in Oregon at Eugene and Medford and in Seattle, Washington. A foreshock to the southeast of the M 5.4 occurred earlier in the day near local solar midnight and may have been promoted by strong tidal stresses associated with the full moon. The last event with M>=3.9 near the foreshock occurred a month ago on July 17, 2019 and prior to that as an M 4.1 on June 26, 2019.  Both the event in June and July occurred with the full moon as noted at the time:

 

"It was also promoted by the full moon as noted in the previous summary" (July 18, 2019)

 

Forecast 117842 had expected today's event within about 100 km of the epicenter was likely around August 14.

 

O: 16AUG2019 07:27:00  43.1N  126.6W mb=3.8  EMSC   OFF COAST OF OREGON          

O: 16AUG2019 07:27:01  43.4N  126.9W MB=3.9  ECAN Eugene, Oregon, USA   

P: 10AUG2019 117842    43.9N  128.4W 3.0-4.3 CAAAA  Off Coast of Oregon        

 

The mainshock of M 5.4 about 250 km northwest of the foreshock was the strongest in this region since an M 5.9 on June 1, 2015. Forecasts 118067 had expected today's earthquake was likely within about 50 km of the epicenter around August 14. This earthquake is located at the third node (120 degrees) from the M 6.8 in Sumatra of August 2 and was probably promoted by energy from that source

 

O: 16AUG2019 15:23:19  44.3N  129.4W Mw=5.4  EMSC   OFF COAST OF OREGON          

P: 14AUG2019 118067    44.5N  129.8W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

A moderate earthquake of M 4.7 was widely felt in Kansas today. NEIC reported this event was felt with maximum intensity VI in Hutchinson, Kansas and V in South Hutchinson and IV in Partridge, Nickerson, Buhler and II-III in Haven, Pretty Prairie, Arlington, Kansas. It was probably triggered by high tidal stresses associated with the full moon on August 15. Earthquakes in this section of the U.S. often occur within a couple of days of full and new moons as noted for example, in previous issues of this summary:

 

"As often occurs, Oklahoma saw enhanced seismic activity today with the strongest in a series of events of M 3.4. It is common for the area to become activated at times of full moons when tidal forces are strong and can affect ground water significantly. At M 3.4, this is the strongest earthquake within about 100 km of this epicenter since an M 3.4 on February 28 and an M 3.8 on February 26, 2019. Forecast 115982 had expected today's activity was likely within about 100 km of these epicenters around May 17." (May 16-17, 2019)

 

Today's earthquake of M 4.7 is the strongest in Kansas or Oklahoma since an M 5.0 on November 7, 2016 nearly three years ago. Forecasts 118042 and 118043 had expected today's activity was likely around August 16-17. This earthquake is located at 144 degrees from the M 6.8 in Sumatra of August 2 and was probably promoted by energy from that source.

 

O: 17AUG2019 06:21:03  38.0N   98.0W mb=2.0  EMSC   KANSAS

O: 16AUG2019 13:43:06  38.0N   98.0W mb=2.7  EMSC   KANSAS

O: 17AUG2019 01:03:37  38.0N   98.0W mb=3.0  EMSC   KANSAS

O: 16AUG2019 12:59:09  38.0N   98.0W mb=4.7  EMSC   KANSAS

O: 16AUG2019 13:30:56  38.0N   98.1W mb=2.6  EMSC   KANSAS

O: 16AUG2019 13:10:49  38.0N   98.1W mb=3.1  EMSC   KANSAS

O: 16AUG2019 19:55:41  38.1N   97.9W mb=2.5  EMSC   KANSAS

O: 17AUG2019 05:23:48  38.1N   98.0W mb=2.1  EMSC   KANSAS                        

P: 16AUG2019 118043    37.0N   98.0W 2.0-4.1 AAAAA  Southern Plains            

P: 17AUG2019 118042    39.0N   99.0W 2.0-4.1 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.0 in Kansas  was felt with intensity II-III in the area(s) of Kansas at Hutchinson and South Hutchinson, Osborne, Perry, and in Oklahoma at Tulsa and Oklahoma City.

 

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: 16AUG2019 10:55:07  37.9N   46.6E ML=4.3  EMSC   NORTHWESTERN IRAN            

P: 13AUG2019 118026    36.0N   46.0E 3.8-5.2 BBAAA  No. Iran                   

 

NEIC reported this earthquake of M 4.1 in Northwestern Iran  was felt with intensity IV in the area(s) of Northwestern Iran at Tebriz.

 

O: 16AUG2019 19:58:04  39.7N   77.0E mb=4.3  EMSC   SOUTHERN XINJIANG, CHINA     

P: 21AUG2019 118059    40.0N   78.0E 4.0-5.3 BAAAA  Kirgizstan/Xinjiang         

 

O: 16AUG2019 07:49:14  56.2N  164.8E mb=4.5  EMSC   KOMANDORSKIYE OSTROVA REGION 

P: 16AUG2019 118090    53.0N  170.0E 4.0-5.5 ACCAA  Near Islands               

 

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

 

INDONESIA AND PHILIPPINES

 

O: 17AUG2019 04:00:21   1.6N  124.8E ML=4.1  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 13AUG2019 117940     1.0N  126.0E 4.0-5.3 BAAAA  Mindanao, Philippines      

 

O: 16AUG2019 19:51:38   2.9N  126.7E ML=4.6  EMSC   MOLUCCA SEA                   

P: 14AUG2019 117939     3.0N  126.0E 4.0-5.3 AAAAA  Halmahera                  

 

O: 16AUG2019 06:59:43   4.9N   96.0E ML=4.0  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 16AUG2019 117942     5.0N   93.0E 4.0-5.3 AACAA  Nicobar Islands            

 

O: 16AUG2019 17:01:31   6.9S  128.3E ML=4.2  EMSC   BANDA SEA                    

P: 17AUG2019 117946     6.0S  129.0E 4.0-5.3 AAAAA  Banda Sea                  

 

O: 17AUG2019 05:18:26   7.4S  106.1E ML=4.3  EMSC   JAVA, INDONESIA              

P: 13AUG2019 117959     9.0S  107.0E 4.0-5.3 BBAAA  So. of Java                

 

O: 17AUG2019 04:40:57   8.0S  124.0E ML=4.1  EMSC   KEPULAUAN ALOR, INDONESIA    

P: 18AUG2019 117951     8.0S  124.0E 4.0-5.3 AAAAA  Flores Island area         

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 16AUG2019 13:51:49  15.0N   94.3W ML=4.0  EMSC   OFF COAST OF CHIAPAS, MEXICO 

P: 13AUG2019 117966    15.0N   95.0W 3.5-5.0 BAAAA  Chiapas, Mexico            

 

O: 16AUG2019 21:30:18  16.7N   94.9W ML=4.5  EMSC   OAXACA, MEXICO               

P: 18AUG2019 117966    16.0N   94.0W 3.5-5.0 AAAAA  Chiapas, Mexico            

 

O: 16AUG2019 17:42:34  16.7N   99.5W ML=4.1  EMSC   GUERRERO, MEXICO              

P: 20AUG2019 117984    16.0N  100.0W 3.5-5.1 BAAAA  Oaxaca, Mexico             

 

O: 16AUG2019 09:28:57  17.9N   68.2W Md=3.2  EMSC   DOMINICAN REPUBLIC REGION    

O: 16AUG2019 16:43:28  18.2N   68.6W Md=3.1  EMSC   MONA PASSAGE, DOMINICAN REPUBL

P: 21AUG2019 117985    19.0N   68.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 16AUG2019 10:54:27  18.6N   65.0W Md=3.1  EMSC   VIRGIN ISLANDS REGION        

O: 16AUG2019 09:45:15  18.8N   64.5W Md=3.1  EMSC   VIRGIN ISLANDS REGION        

P: 14AUG2019 117973    18.0N   65.0W 3.0-4.8 AAAAA  Leeward Islands            

 

O: 16AUG2019 23:31:35  18.8N   70.4W ML=3.3  EMSC   DOMINICAN REPUBLIC           

P: 21AUG2019 117985    19.0N   68.0W 3.4-4.9 BABAA  Puerto Rico                

 

O: 16AUG2019 07:53:36  25.0S   68.8W mb=4.4  EMSC   ANTOFAGASTA, CHILE           

P: 21AUG2019 118129    24.0S   69.0W 4.0-5.3 BAAAA  Coast No. Chile            

 

O: 17AUG2019 00:09:24  35.3S   71.0W mb=4.1  EMSC   MAULE, CHILE                 

P: 14AUG2019 118139    35.0S   71.0W 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: 17AUG2019 02:22:07  37.4N   20.4E mb=4.5  EMSC   IONIAN SEA                   

P: 21AUG2019 118023    37.0N   20.0E 3.0-4.4 BAAAA  No. Greece                 

 

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

 

SOUTHWEST PACIFIC

 

O: 17AUG2019 05:26:35  21.0S  178.6W mb=4.6  EMSC   FIJI REGION                   

P: 14AUG2019 118136    23.0S  178.0W 4.0-5.3 BBAAA  Tonga Islands              

 

O: 16AUG2019 23:30:07  26.7S  175.8W Mw=5.0  EMSC   SOUTH OF TONGA               

P: 17AUG2019 118136    27.0S  176.0W 4.0-5.4 AAAAA  Tonga Islands              

 

OCEAN RIDGES

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 16AUG2019 07:25:08  30.7S  179.7W mb=4.5  EMSC   KERMADEC ISLANDS REGION      

P: 18AUG2019 118141    30.0S  178.0W 4.0-5.3 AAAAA  No. Kermadec Islands       

P: 21AUG2019 118141    30.0S  179.0W 4.0-5.3 BAAAA  No. Kermadec Islands       

 

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: 16AUG2019 21:14:29  31.8N  115.5W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 14AUG2019 118033    31.9N  116.3W 2.5-4.3 AAAAA  So. California             

 

O: 16AUG2019 10:57:00  32.9N  116.3W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

O: 16AUG2019 12:29:55  33.0N  116.4W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 17AUG2019 118035    32.9N  115.6W 2.5-4.3 AAAAA  So. California             

 

O: 16AUG2019 07:45:00  33.4N  116.3W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 11AUG2019 117807    34.1N  117.4W 2.5-4.4 BAAAA  So. California             

 

O: 16AUG2019 08:57:32  34.2N  117.5W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 11AUG2019 117807    34.1N  117.4W 2.5-4.4 BAAAA  So. California             

P: 20AUG2019 118036    34.1N  117.4W 2.5-4.4 BAAAA  So. California             

 

O: 17AUG2019 02:10:23  36.1N  117.9W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 16AUG2019 18:14:25  35.7N  117.5W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 16AUG2019 16:35:53  36.1N  117.9W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 16AUG2019 15:43:32  35.7N  117.5W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 16AUG2019 12:00:27  35.4N  117.9W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 16AUG2019 11:27:27  36.2N  117.9W Ml=2.6  EMSC   CENTRAL CALIFORNIA           

P: 18AUG2019 118005    36.1N  118.1W 2.5-4.5 AAAAA  California/Nevada area     

 

ALASKA

 

O: 16AUG2019 15:14:26  58.0N  137.6W ML=3.1  EMSC   OFF COAST OF SOUTHEASTERN ALAS

O: 16AUG2019 15:31:58  58.1N  137.6W ML=3.0  EMSC   SOUTHEASTERN ALASKA          

P: 15AUG2019 118086    58.3N  138.5W 3.0-4.9 AAAAA  British Colombia           

 

O: 16AUG2019 14:53:25  61.5N  147.8W ml=3.4  EMSC   SOUTHERN ALASKA              

P: 19AUG2019 118104    62.7N  149.3W 3.2-4.9 BBAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.4 in Southern Alaska  was felt with intensity II-III in the area(s) of Southern Alaska at Palmer, Chugiak, Eagle River and Anchorage.

 

O: 16AUG2019 19:58:41  67.7N  163.5W ml=3.2  EMSC   NORTHERN ALASKA              

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 16AUG2019 07:27:00  43.1N  126.6W mb=3.8  EMSC   OFF COAST OF OREGON          

O: 16AUG2019 07:27:01  43.4N  126.9W MB=3.9  ECAN Eugene, Oregon, USA   

P: 10AUG2019 117842    43.9N  128.4W 3.0-4.3 CAAAA  Off Coast of Oregon         

 

O: 16AUG2019 15:23:19  44.3N  129.4W Mw=5.4  EMSC   OFF COAST OF OREGON          

P: 14AUG2019 118067    44.5N  129.8W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

ROCKY MOUNTAINS REGION

 

O: 16AUG2019 09:35:19  31.7N  104.3W ML=3.0  EMSC   WESTERN TEXAS                

P: 11AUG2019 117802    31.4N  103.8W 2.0-3.9 BAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 16AUG2019 12:36:11  35.1N   95.4W ML=2.2  EMSC   OKLAHOMA

O: 16AUG2019 17:43:46  35.1N   95.4W ML=2.6  EMSC   OKLAHOMA

O: 16AUG2019 20:11:36  36.3N   97.7W ML=2.0  EMSC   OKLAHOMA

O: 17AUG2019 03:24:59  36.8N   97.7W ML=2.3  EMSC   OKLAHOMA

O: 16AUG2019 13:28:23  34.8N   97.6W mb=2.6  EMSC   OKLAHOMA                     

P: 15AUG2019 118042    35.0N   96.0W 2.0-3.8 AAAAA  Southeast U.S.             

 

O: 17AUG2019 06:21:03  38.0N   98.0W mb=2.0  EMSC   KANSAS

O: 16AUG2019 13:43:06  38.0N   98.0W mb=2.7  EMSC   KANSAS

O: 17AUG2019 01:03:37  38.0N   98.0W mb=3.0  EMSC   KANSAS

O: 16AUG2019 12:59:09  38.0N   98.0W mb=4.7  EMSC   KANSAS

O: 16AUG2019 13:30:56  38.0N   98.1W mb=2.6  EMSC   KANSAS

O: 16AUG2019 13:10:49  38.0N   98.1W mb=3.1  EMSC   KANSAS

O: 16AUG2019 19:55:41  38.1N   97.9W mb=2.5  EMSC   KANSAS

O: 17AUG2019 05:23:48  38.1N   98.0W mb=2.1  EMSC   KANSAS                        

P: 16AUG2019 118043    37.0N   98.0W 2.0-4.1 AAAAA  Southern Plains            

P: 17AUG2019 118042    39.0N   99.0W 2.0-4.1 AAAAA  Southern Plains            

 

HAWAII

 

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

 

UNUSUAL QUAKES SHAKE CENTRAL NORTH AMERICA

 

EARTHQUAKE SUMMARY FOR AUGUST 15, 2019

 

 

Moderate earthquakes of M 4.1 and 4.2 hit the region of north-central North America today. These events in Western Montana and Manitoba, Canada were lightly felt in their respective epicentral areas. An earthquake of M 3.3 also occurred in southeastern Yellowstone, Wyoming, the strongest in that region in more than 10 years.

 

The strongest earthquake in the world today was an M 5.5 in the southern Vanuatu Islands near the Loyalty Islands. It occurred near local solar noon and at the time of the full moon and was probably promoted by high tidal stresses associated with that alignment. This is not in the typical area of moderate

to large quakes in this area. The last event east of 172.5E with M>=5.5 occurred as an M 5.8 on November 25, 2017. Forecast 118130 had expected today's event in the area was likely around August 18. This summary had issued the tidal seismicity forecast in the past several issues as:

 

"The full moon arrives on August 15 at 12:29 UT. Longitudes which are anti-solar at this time include the Southwestern Pacific near 175 East and include the Fiji/Tonga/New Zealand area and the western Aleutians. In the west these longitudes are near 5 West and include western Europe and portions of the Mid-Atlantic Ridge. These area the areas most likely to see tidal triggering in the next week, but tidal triggering is common and can be recognized by the timing of earthquakes near local solar midnight and noon." (August 13-15, 2019)

 

O: 15AUG2019 10:38:32  20.7S  173.3E Mw=5.5  EMSC   VANUATU REGION               

P: 18AUG2019 118130    22.0S  169.0E 4.0-5.3 BBCAA  Loyalty Islands            

 

Moderate earthquakes of M 4.1 and 4.2 hit the region of north-central North America today. These events in Western Montana and Manitoba, Canada were lightly felt in their respective epicentral areas. The earthquake in western Montana of M 4.2 was accompanied by light shocks and was probably triggered by high tidal stresses associated with the full moon. These are part of a series of Western Montana quakes which have been occurring during August. The M 4.2 is the strongest in this area within about 100 km of these epicenters since an M 4.1 in the area on August 6, 2019 and an M 4.0 with the previous full moon on July 14, 2019. The last event of M>4.2 in the area was an M 5.8 and aftershocks on July 6, 2017. Forecast 118063 had expected today's event was likely around August 16.

 

NEIC reported this earthquake of M 4.2 in Western Montana  was felt with intensity IV in Montana at Three Forks, Manhattan, Belgrade and II-III in the area(s) of Western Montana at Bozeman, Radersburg, Pony, Gallatin,  Ennis,  and Whitehall. Foreshocks were felt with light intensity in the same area.

 

O: 16AUG2019 00:01:25  45.9N  111.4W ML=3.4  EMSC   WESTERN MONTANA              

O: 15AUG2019 23:41:27  45.9N  111.4W Ml=2.4  EMSC   WESTERN MONTANA              

O: 16AUG2019 00:02:37  45.9N  111.4W Mw=4.2  EMSC   WESTERN MONTANA              

P: 16AUG2019 118063    45.7N  112.1W 2.0-4.0 AAAAA  Montana/Idaho              

 

The earthquake in Manitoba, Canada occurred with M 4.1 about 2.5 hours after the M 4.2 in Montana. NEIC reported this earthquake of M 4.1 in Manitoba, Canada was felt with intensity II-III in the area(s) of Esterhazy, Saskatchewan, Canada. It was also likely promoted by high tidal stress accompanying the full moon. Two other earthquakes of M>=4 have hit within about 300 km of this epicenter in the past 30 years - an M 4.1 on February 1, 2012 and an M 4.4 on April 14, 2010.

 

O: 16AUG2019 02:30:46  50.7N  101.8W mb=4.1  EMSC   MANITOBA, CANADA             

 

An M 3.3 also occurred in southeastern Yellowstone, Wyoming today. It occurred within minutes of local solar noon a time when tidal stresses are greatest with the full moon. The M 3.3 is the strongest within about 50 km of this epicenter since an M 4.0 11 years ago on December 31, 2008.  Forecast 118079 had expected today's event within about 10 km of this epicenter was likely around August 21.

 

O: 15AUG2019 08:29:50  44.0N  110.3W Ml=2.0  EMSC   WYOMING                      

O: 15AUG2019 19:46:39  44.1N  110.4W ML=3.3  EMSC   WYOMING                      

P: 21AUG2019 118079    44.2N  110.3W 2.0-3.9 CAAAA  Yellowstone/Wyoming        

 

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: 15AUG2019 21:41:40  23.6N  120.7E ML=4.6  EMSC   TAIWAN                        

O: 15AUG2019 21:41:40  23.6N  120.7E ML=4.6  TAI    Hualien, Taiwan              

P: 19AUG2019 118001    23.0N  121.0E 4.0-5.3 BAAAA  Taiwan                     

 

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

 

O: 16AUG2019 02:09:19  36.4N   70.8E mb=5.2  EMSC   HINDU KUSH REGION, AFGHANISTAN

P: 15AUG2019 118017    36.0N   72.0E 3.8-5.2 AAAAA  Hindu Kush/Pakistan        

 

NEIC reported this earthquake of M 5.2 in Hindu Kush, Afghanistan was felt with intensity IV in Pakistan in Shinpokh and II-III in the area(s) of Afghanistan a Mahmoud Raqui, Jalal Abad, Kabul, and in Rawalpindi and Lahore, Pakistan.

 

O: 15AUG2019 07:24:41  56.3N  164.0E mb=4.4  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  4AUG2019 117864    56.0N  166.0E 4.0-5.5 DABAA  Komandorsky Isl            

 

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

 

INDONESIA AND PHILIPPINES

 

O: 15AUG2019 08:17:54   5.2N  126.4E ML=4.6  EMSC   MINDANAO, PHILIPPINES        

P: 19AUG2019 117939     4.0N  127.0E 4.0-5.3 BBAAA  Halmahera                  

 

O: 15AUG2019 12:13:37   7.0S  104.9E ML=4.7  EMSC   SUNDA STRAIT, INDONESIA      

P: 15AUG2019 117961     6.0S  102.0E 4.0-5.5 AACAA  So. of Sumatera            

 

O: 15AUG2019 14:00:32  10.2S  118.8E ML=4.0  EMSC   SOUTH OF SUMBAWA, INDONESIA  

P: 21AUG2019 117951     7.0S  120.0E 4.0-5.3 CCBAA  Flores Island area         

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 15AUG2019 16:06:50   8.3S   75.1W mb=4.8  EMSC   CENTRAL PERU                 

P: 18AUG2019 117947     9.0S   75.0W 3.5-5.0 BAAAA  Brazil                     

 

O: 15AUG2019 11:01:11  16.6N   98.3W mb=4.2  EMSC   GUERRERO, MEXICO             

P: 18AUG2019 117983    16.0N   98.0W 3.5-5.2 BAAAA  Oaxaca, Mexico             

 

NEIC reported this earthquake of M 4.2 in Guerrero, Mexico was felt with intensity V in Ometepec, Guerrero, Mexico and  II-III in the area(s) of Guerrero at Cuajinicuilapa, San Marcos, near Mexico City at Mexico City, Naucalpan and Tlanepantla and in Oaxaca at Pinotepa and Amuzgos and Cacahuatepec, Mexico.

 

O: 15AUG2019 20:57:16  17.3N   94.9W ML=4.0  EMSC   VERACRUZ, MEXICO             

P: 18AUG2019 117966    16.0N   94.0W 3.5-5.0 BBAAA  Chiapas, Mexico            

 

O: 15AUG2019 16:42:48  17.8N   68.5W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P:  8AUG2019 117752    18.0N   69.0W 3.4-4.9 CAAAA  Puerto Rico                

 

O: 15AUG2019 09:56:03  22.8S   66.8W ML=4.1  EMSC   JUJUY, ARGENTINA             

O: 15AUG2019 08:40:41  23.7S   66.8W ML=4.1  EMSC   JUJUY, ARGENTINA              

P: 13AUG2019 118127    24.0S   66.0W 4.0-5.3 AAAAA  Argentina                  

 

O: 16AUG2019 04:44:53  25.7N  110.0W ML=4.5  EMSC   GULF OF CALIFORNIA           

P: 14AUG2019 117992    24.0N  109.0W 3.5-4.8 ABAAA  Gulf of California         

 

O: 15AUG2019 14:23:41  29.9S   72.1W Mw=5.0  EMSC   OFFSHORE COQUIMBO, CHILE     

O: 15AUG2019 14:43:37  29.9S   72.1W mb=4.4  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 17AUG2019 118140    30.0S   70.0W 4.0-5.3 AABAA  Coast Central Chile        

 

AFRICA AND EUROPE

 

O: 15AUG2019 07:00:11  64.5N   16.2W ML=3.0  EMSC   ICELAND                      

P: 15AUG2019 118109    66.0N   17.0W 3.0-4.3 ABAAA  Iceland area               

 

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

 

SOUTHWEST PACIFIC

 

O: 16AUG2019 03:19:02  15.6S  173.7W mb=4.6  EMSC   TONGA                        

P: 15AUG2019 118124    16.0S  174.0W 4.0-5.3 AAAAA  Tonga Islands              

 

O: 15AUG2019 08:08:18  16.2S  168.1E mb=4.5  EMSC   VANUATU                      

P: 10AUG2019 117903    14.0S  167.0E 4.0-5.3 BCAAA  Vanuatu Islands            

 

O: 15AUG2019 10:38:32  20.7S  173.3E Mw=5.5  EMSC   VANUATU REGION               

P: 18AUG2019 118130    22.0S  169.0E 4.0-5.3 BBCAA  Loyalty Islands            

 

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: 15AUG2019 09:07:36  38.6N  142.3E mb=4.9  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 17AUG2019 118029    38.0N  141.0E 4.0-5.3 AAAAA  Off East Coast Honshu      

 

O: 16AUG2019 04:37:50  41.5N  140.9E mb=4.3  EMSC   HOKKAIDO, JAPAN REGION       

P: 10AUG2019 117827    42.0N  142.0E 3.5-5.3 CAAAA  Hokkaido, Japan            

 

O: 15AUG2019 09:15:04  42.1N  143.7E mb=4.8  EMSC   HOKKAIDO, JAPAN REGION       

P: 15AUG2019 118056    41.0N  143.0E 3.5-5.3 ABAAA  Hokkaido, Japan             

 

O: 15AUG2019 13:54:31  46.0N  152.1E mb=4.8  EMSC   KURIL ISLANDS                

O: 16AUG2019 04:31:55  46.4N  152.5E mb=4.9  EMSC   KURIL ISLANDS                

P:  6AUG2019 117851    47.0N  151.0E 3.5-5.3 CAAAA  So. Kurils                  

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 15AUG2019 18:22:45  33.0N  116.4W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 17AUG2019 118035    32.9N  115.6W 2.5-4.3 AAAAA  So. California             

 

O: 15AUG2019 17:00:19  33.8N  117.5W Ml=2.1  EMSC   GREATER LOS ANGELES AREA, CALI

O: 15AUG2019 15:59:20  33.8N  118.1W Ml=2.0  EMSC   GREATER LOS ANGELES AREA, CALI

P: 14AUG2019 118036    34.2N  117.8W 2.5-4.3 AAAAA  So. California             

 

O: 15AUG2019 18:26:11  35.2N  118.9W Ml=2.6  EMSC   CENTRAL CALIFORNIA           

O: 16AUG2019 02:24:11  35.8N  118.5W ML=2.4  EMSC   CENTRAL CALIFORNIA           

P: 14AUG2019 118038    35.3N  118.6W 2.5-4.5 AAAAA  So. California             

 

O: 15AUG2019 09:14:47  36.3N  120.4W Ml=3.2  EMSC   CENTRAL CALIFORNIA           

P: 18AUG2019 118011    36.6N  120.7W 2.5-4.3 BAAAA  Central California         

 

O: 16AUG2019 05:28:12  38.8N  122.8W Md=2.7  EMSC   NORTHERN CALIFORNIA          

P: 15AUG2019 118013    38.8N  122.8W 2.5-4.3 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in the California Geysers was felt with intensity II-III in the area(s) of the California Geysers at Kelseyville and Middletown.

 

O: 15AUG2019 13:06:02  40.7N  121.5W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P: 14AUG2019 118013    39.8N  123.5W 2.5-4.3 AABAA  Central California         

 

O: 16AUG2019 00:56:14  35.6N  117.4W ML=3.1  EMSC   SOUTHERN CALIFORNIA

O: 15AUG2019 21:27:04  36.0N  117.7W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 15AUG2019 20:44:59  35.6N  117.4W Ml=3.0  EMSC   SOUTHERN CALIFORNIA

O: 15AUG2019 19:22:03  36.1N  117.9W Ml=2.6  EMSC   CENTRAL CALIFORNIA

O: 15AUG2019 18:49:24  35.7N  117.5W Ml=2.6  EMSC   SOUTHERN CALIFORNIA

O: 15AUG2019 17:06:37  35.7N  117.5W Ml=2.6  EMSC   SOUTHERN CALIFORNIA

O: 15AUG2019 14:24:33  36.1N  117.9W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 15AUG2019 12:32:40  36.1N  117.9W Ml=2.7  EMSC   CENTRAL CALIFORNIA

O: 15AUG2019 11:52:31  36.1N  117.9W Ml=3.0  EMSC   CENTRAL CALIFORNIA

O: 15AUG2019 11:50:24  36.1N  117.9W Mw=3.9  EMSC   CENTRAL CALIFORNIA

O: 16AUG2019 04:01:27  36.1N  117.9W ML=3.1  EMSC   CENTRAL CALIFORNIA           

P: 16AUG2019 118039    35.8N  117.6W 2.5-4.4 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.9 in Coso Junction, California was felt with intensity II-III in the area(s) of Ridgecrest, Wofford Heights, Fish Camp, California.

 

ALASKA

 

O: 15AUG2019 17:52:55  51.3N  178.1W mb=3.9  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P: 13AUG2019 118083    51.6N  177.6W 3.5-4.8 AAAAA  Andreanoff Isls, Aleutians 

 

O: 15AUG2019 11:57:23  55.0N  156.7W ml=3.6  EMSC   SOUTH OF ALASKA              

P: 13AUG2019 118080    54.7N  156.9W 3.5-4.8 AAAAA  Alaska Peninsula           

 

O: 15AUG2019 17:06:22  59.3N  152.1W ML=3.1  EMSC   SOUTHERN ALASKA              

P: 17AUG2019 118102    60.2N  151.7W 3.2-4.9 AAAAA  Central Alaska             

 

O: 16AUG2019 06:03:02  68.9N  146.9W ML=3.4  EMSC   NORTHERN ALASKA              

P: 17AUG2019 118108    69.2N  144.4W 3.2-4.8 AAAAA  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: 15AUG2019 16:49:37  37.0N  113.5W ML=2.8  EMSC   ARIZONA                      

P: 17AUG2019 118008    37.8N  115.8W 2.5-4.3 AABAA  California/Nevada area     

 

NEIC reported this earthquake of M 2.8 in Arizona was felt with intensity II-III in the area(s) of Saint George, Utah.

 

O: 15AUG2019 08:29:50  44.0N  110.3W Ml=2.0  EMSC   WYOMING                      

O: 15AUG2019 19:46:39  44.1N  110.4W ML=3.3  EMSC   WYOMING                      

P: 21AUG2019 118079    44.2N  110.3W 2.0-3.9 CAAAA  Yellowstone/Wyoming        

 

O: 16AUG2019 00:01:25  45.9N  111.4W ML=3.4  EMSC   WESTERN MONTANA              

O: 15AUG2019 23:41:27  45.9N  111.4W Ml=2.4  EMSC   WESTERN MONTANA              

O: 16AUG2019 00:02:37  45.9N  111.4W Mw=4.2  EMSC   WESTERN MONTANA              

P: 16AUG2019 118063    45.7N  112.1W 2.0-4.0 AAAAA  Montana/Idaho               

 

O: 16AUG2019 02:30:46  50.7N  101.8W mb=4.1  EMSC   MANITOBA, CANADA             

 

EASTERN U.S./CANADA

 

O: 15AUG2019 12:54:16  35.1N   95.3W mb=2.7  EMSC   OKLAHOMA                     

O: 15AUG2019 08:26:11  35.2N   96.0W ML=2.2  EMSC   OKLAHOMA                     

P: 15AUG2019 118042    35.0N   96.0W 2.0-3.8 AAAAA  Southeast U.S.             

 

NEIC reported this earthquake of M 2.8 in Oklahoma was felt with intensity II-III in the area(s) of Kinta, Oklahoma.

 

O: 15AUG2019 05:02:58  46.0N   75.5W MB=1.4  ECAN Val-des-Bois, QC               

P: 14AUG2019 118065    46.0N   75.0W 2.0-3.8 AAAAA  New York State             

 

O: 15AUG2019 01:03:20  49.7N   65.8W MB=1.9  ECAN Moisie, QC                     

P: 16AUG2019 118054    49.0N   66.0W 2.0-3.9 AAAAA  E. of Maine                

 

HAWAII

 

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

 

CYCLONES TRIGGER QUAKES IN JAPAN; MEXICO

 

EARTHQUAKE SUMMARY FOR AUGUST 14, 2019

 

Two Tropical Cyclones have been active over the past several days. These were located in the area of Mexico near the Revilla Gigedo Islands and in Honshu, Japan making landfall on southern Honshu. The largest earthquakes in the world  were M 5.8-5.9 in the Mexican Revilla Gigedo Islands and an M 5.4 off the coast of Honshu, Japan. Coincidences such as this are major data supporting the hypothesis that such ocean storms can help trigger regional seismicity.

 

The strongest earthquake recorded in the world today was an M 5.8-5.9 off western Mexico in the Revilla Gigedo Islands region. NEIC reported it was felt with intensity III San Lucas, Baja California, Mexico. It may have been triggered by the passage of Tropical Storm Henriette which passed over this epicenter two days ago as noted in  this summary at the time:

 

TD    09E      2019-08-12  00:00 UT  18.7N  109.2W   40 kts  South of Western Mexico   

TS   HENRIETTE 2019-08-13  00:00 UT  20.5N  113.7W   45 kts  South of Western Mexico   

 

 

TS Henriette (TD 09E) continued today in the area south of Mexico with winds up to 40 kts. It is expected to track to the west and not to encounter land at this time. No seismic watch is likely with this storm." (August 11-13, 2019)

 

The last earthquake of M>=5.9 within about 200 km of today's epicenter in the Revilla Gigedo Islands, Mexico occurred as an M 6.3 on November 1, 2011. Forecasts 117968 and 117992 had expected today's event within about 50 km of the epicenter was likely around August 14-17. Earthquakes in this area can stress faults to the north, but as this was triggered by TS Henriette, this is much less likely to trigger additional seismicity in the Gulf of California. This epicenter is at 144 degrees from the M 6.8 in Sumatra of August 2 and may have been promoted from that source.

 

O: 14AUG2019 21:35:19  20.5N  109.2W Mw=5.9  EMSC   REVILLA GIGEDO ISLANDS REGION

P: 14AUG2019 117968    19.0N  109.0W 3.5-5.1 ABAAA  Coast of Jalisco, Mexico   

P: 17AUG2019 117992    20.0N  109.0W 3.5-4.8 BAAAA  Gulf of California         

 

A moderately strong earthquake today occurred as  an M 5.4 off the coast of eastern Honshu, Japan. It was reported with intensity V in Aomori; III in Iwate and II in Miyagi, Japan. This may have been triggered by the arrival in southern Japan of Typhoon Krosa as expected in previous issues of this summary:

 

Typhoon KROSA (11W) continued today west of the Bonin Islands, Japan with winds up to 65 kts. It is expected to track to the north and possibly to make landfall near Kyushu, Japan around August 15. Some seismic increases may be expected in the Mariana and Volcano Islands and later in western Honshu, Japan over the next several days. These areas are currently under a seismic watch through mid-August.

 

This is the strongest earthquake off northern Honshu within about 200 km of this epicenter since an M 5.4 on April 22, 2019. Two earthquakes in this region in the past year have exceeded this magnitude - an M 6.1 on April 11, 2019 and an M 5.7 on October 25, 2018. Forecasts 117827 and 118056 had expected this activity within this area was likely around August 10-15.

 

O: 15AUG2019 05:32:53  40.9N  141.2E Mw=5.4  EMSC   NEAR EAST COAST OF HONSHU, JAP

O: 15AUG2019 06:06:09  41.0N  141.1E mb=4.7  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 10AUG2019 117827    42.0N  142.0E 3.5-5.3 BAAAA  Hokkaido, Japan            

P: 15AUG2019 118056    41.0N  143.0E 3.5-5.3 AABAA  Hokkaido, Japan            

 

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: 14AUG2019 17:24:30  27.7N   86.3E ML=4.3  EMSC   NEPAL                        

P: 16AUG2019 118047    30.0N   82.0E 3.8-5.1 ACCAA  Xizang                     

 

O: 14AUG2019 08:13:54  30.4N   94.8E mb=5.0  EMSC   EASTERN XIZANG               

O: 14AUG2019 23:47:05  30.4N   94.9E mb=4.9  EMSC   EASTERN XIZANG               

P: 14AUG2019 118048    33.0N   92.0E 3.8-5.1 ACBAA  Xizang                     

 

O: 14AUG2019 19:01:10  55.0N  164.7E mb=4.5  EMSC   KOMANDORSKIYE OSTROVA REGION 

P:  4AUG2019 117864    56.0N  166.0E 4.0-5.5 CAAAA  Komandorsky Isl            

 

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

 

INDONESIA AND PHILIPPINES

 

O: 14AUG2019 22:43:05   1.9N  128.2E mb=4.6  EMSC   HALMAHERA, INDONESIA         

P: 11AUG2019 117715     1.0N  126.0E 4.0-5.3 BABAA  Mindanao, Philippines      

 

O: 14AUG2019 18:37:25   3.0N  126.9E ML=4.0  EMSC   MOLUCCA SEA                  

P: 14AUG2019 117939     3.0N  126.0E 4.0-5.3 AAAAA  Halmahera                  

 

O: 14AUG2019 21:56:26   4.5N   95.1E mb=4.6  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 16AUG2019 117942     5.0N   93.0E 4.0-5.3 AABAA  Nicobar Islands            

 

O: 14AUG2019 18:38:53   7.2S  129.4E ML=4.5  EMSC   KEPULAUAN BABAR, INDONESIA   

O: 14AUG2019 07:56:38   8.5S  128.3E ML=4.7  EMSC   TIMOR SEA                    

P: 14AUG2019 117946     7.0S  130.0E 4.0-5.3 AAAAA  Banda Sea                  

 

CENTRAL AND SOUTH AMERICA

 

O: 14AUG2019 19:11:57  14.8N   93.8W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 14AUG2019 08:39:38  14.9N   92.9W ML=4.3  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  8AUG2019 117740    14.0N   92.0W 3.5-5.1 CAAAA  Guatemala                  

P: 13AUG2019 117970    16.0N   92.0W 3.5-5.0 ABAAA  Guatemala                  

 

O: 15AUG2019 01:48:39  15.5N   95.7W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13AUG2019 117966    15.0N   95.0W 3.5-5.0 AAAAA  Chiapas, Mexico            

 

O: 14AUG2019 20:39:01  16.4N   94.6W ML=4.1  EMSC   OAXACA, MEXICO               

P: 13AUG2019 117966    15.0N   95.0W 3.5-5.0 ABAAA  Chiapas, Mexico            

 

O: 15AUG2019 02:26:56  18.3N   64.7W Md=3.1  EMSC   VIRGIN ISLANDS REGION        

P: 14AUG2019 117973    18.0N   65.0W 3.0-4.8 AAAAA  Leeward Islands            

 

O: 14AUG2019 12:23:07  18.6S   69.6W ML=4.0  EMSC   TARAPACA, CHILE              

P: 21AUG2019 118122    19.0S   69.0W 4.0-5.3 CAAAA  So. Peru/Bolivia           

 

O: 14AUG2019 17:32:53  19.0N   64.3W Md=3.4  EMSC   VIRGIN ISLANDS REGION        

P: 14AUG2019 117973    18.0N   65.0W 3.0-4.8 AAAAA  Leeward Islands            

 

O: 15AUG2019 03:15:35  19.0N   67.5W Md=3.0  EMSC   PUERTO RICO REGION           

P: 15AUG2019 117985    18.0N   66.0W 3.4-4.8 AABAA  Puerto Rico                

 

O: 14AUG2019 21:35:19  20.5N  109.2W Mw=5.9  EMSC   REVILLA GIGEDO ISLANDS REGION

P: 14AUG2019 117968    19.0N  109.0W 3.5-5.1 ABAAA  Coast of Jalisco, Mexico   

P: 17AUG2019 117992    20.0N  109.0W 3.5-4.8 BAAAA  Gulf of California         

 

O: 14AUG2019 21:33:10  20.7S   70.1W mb=4.4  EMSC   TARAPACA, CHILE              

P: 14AUG2019 118135    20.0S   69.0W 4.0-5.4 AAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 4.4 in Northern Chile was felt with intensity II-III in the area(s) of Arica, Tarapaca, Chile.

 

O: 15AUG2019 06:25:52  24.3S   67.2W Mw=4.9  EMSC   SALTA, ARGENTINA             

O: 15AUG2019 02:36:28  24.3S   67.4W ML=4.0  EMSC   SALTA, ARGENTINA             

P: 13AUG2019 118127    24.0S   66.0W 4.0-5.3 AAAAA  Argentina                  

 

O: 14AUG2019 11:42:43  32.0S   71.5W ML=3.8  EMSC   OFFSHORE COQUIMBO, CHILE     

P: 16AUG2019 118138    32.0S   69.0W 4.0-5.6 AABAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O: 14AUG2019 13:54:22  39.4N   19.9E ML=4.0  EMSC   KERKIRA REGION, GREECE       

P: 15AUG2019 118070    41.0N   20.0E 3.0-4.9 ABAAA  Romania/NW Turkey          

 

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

 

SOUTHWEST PACIFIC

 

O: 14AUG2019 19:46:49  18.0S  178.4W mb=4.6  EMSC   FIJI REGION                  

P: 17AUG2019 118124    18.0S  179.0W 4.0-5.3 BAAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 15AUG2019 06:24:31  13.1N   50.3E mb=4.6  EMSC   GULF OF ADEN                 

P: 16AUG2019 117965    15.0N   54.0E 3.5-4.8 ABCAA  Gulf of Aden               

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 14AUG2019 11:00:08  31.2S  177.3W mb=4.8  EMSC   KERMADEC ISLANDS REGION      

P: 14AUG2019 118144    32.0S  179.0W 4.0-5.3 AABAA  So. Kermadec Islands       

P: 18AUG2019 118141    30.0S  178.0W 4.0-5.3 BBAAA  No. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 15AUG2019 05:32:53  40.9N  141.2E Mw=5.4  EMSC   NEAR EAST COAST OF HONSHU, JAP

O: 15AUG2019 06:06:09  41.0N  141.1E mb=4.7  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 10AUG2019 117827    42.0N  142.0E 3.5-5.3 BAAAA  Hokkaido, Japan            

P: 15AUG2019 118056    41.0N  143.0E 3.5-5.3 AABAA  Hokkaido, Japan            

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 14AUG2019 11:36:27  32.9N  115.5W ML=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 14AUG2019 118033    32.4N  115.8W 2.5-4.4 AAAAA  So. California             

 

O: 14AUG2019 20:16:43  34.0N  118.1W Ml=2.0  EMSC   GREATER LOS ANGELES AREA, CALI

P: 14AUG2019 118036    34.2N  117.8W 2.5-4.3 AAAAA  So. California             

 

O: 14AUG2019 07:53:33  36.6N  121.2W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 17AUG2019 118011    36.8N  121.3W 2.5-4.3 BAAAA  Central California         

 

O: 14AUG2019 07:59:32  37.0N  118.2W ML=2.3  EMSC   CENTRAL CALIFORNIA           

O: 14AUG2019 15:00:01  37.0N  118.3W MD=2.4  EMSC   CENTRAL CALIFORNIA           

O: 14AUG2019 21:15:26  37.0N  118.3W MD=2.7  EMSC   CENTRAL CALIFORNIA           

O: 14AUG2019 15:03:45  37.0N  118.3W Md=2.4  EMSC   CENTRAL CALIFORNIA           

P: 14AUG2019 118006    37.4N  118.6W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 14AUG2019 07:45:08  38.8N  122.8W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 15AUG2019 118013    38.8N  122.8W 2.5-4.3 AAAAA  Central California         

 

 

O: 15AUG2019 06:26:23  35.6N  117.5W Ml=2.7  EMSC   SOUTHERN CALIFORNIA

O: 15AUG2019 00:12:49  35.8N  117.6W Ml=2.9  EMSC   SOUTHERN CALIFORNIA

O: 14AUG2019 23:32:45  36.0N  117.4W Ml=3.2  EMSC   CENTRAL CALIFORNIA

O: 14AUG2019 22:52:26  36.1N  117.9W ML=3.5  EMSC   CENTRAL CALIFORNIA

O: 14AUG2019 22:41:26  36.1N  117.9W Ml=2.7  EMSC   CENTRAL CALIFORNIA

O: 14AUG2019 22:01:11  36.1N  117.9W ML=2.5  EMSC   CENTRAL CALIFORNIA

O: 14AUG2019 21:04:11  35.9N  117.7W Mw=3.8  EMSC   CENTRAL CALIFORNIA

O: 14AUG2019 09:38:50  35.9N  117.7W Ml=2.6  EMSC   CENTRAL CALIFORNIA

O: 14AUG2019 09:34:19  35.9N  117.7W Mw=3.6  EMSC   CENTRAL CALIFORNIA

O: 14AUG2019 07:57:47  36.1N  117.9W Ml=2.1  EMSC   CENTRAL CALIFORNIA           

P: 13AUG2019 118005    36.0N  117.7W 2.5-4.5 AAAAA  California/Nevada area     

 

ALASKA

 

O: 14AUG2019 07:28:51  60.5N  140.8W ml=3.1  EMSC   SOUTHERN YUKON TERRITORY, CANA

P:  9AUG2019 117875    60.0N  139.0W 3.2-4.8 BAAAA  Central Alaska             

P: 15AUG2019 118096    58.0N  139.0W 3.0-4.4 ACAAA  Southeast Alaska           

 

NEIC reported this earthquake of M 3.0 in Southern Alaska was felt with intensity II-III in the area(s) of Wasilla and Palmer, Alaska.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 14AUG2019 01:08:35  58.4N  136.6W MB=4.9  ECAN OF JUNEAU, AK                  

P: 15AUG2019 118086    58.3N  138.5W 3.0-4.9 AAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O: 15AUG2019 01:57:22  31.7N  104.3W ML=2.8  EMSC   WESTERN TEXAS                

P: 11AUG2019 117802    31.4N  103.8W 2.0-3.9 BAAAA  SW U.S.A                    

 

O: 14AUG2019 07:00:45  44.8N  111.2W Ml=2.4  EMSC   WESTERN MONTANA              

P: 21AUG2019 118079    44.8N  111.9W 2.0-3.8 CAAAA  Yellowstone/Wyoming        

 

O: 15AUG2019 06:19:18  47.2N  113.2W ML=2.7  EMSC   WESTERN MONTANA              

P: 13AUG2019 118079    46.4N  111.4W 2.0-4.0 AABAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O: 15AUG2019 03:46:18  35.8N   98.1W ML=2.1  EMSC   OKLAHOMA                     

P: 13AUG2019 118043    36.0N   97.0W 2.0-4.1 AAAAA  Southern Plains             

 

O: 14AUG2019 13:44:36  38.0N   98.0W mb=2.4  EMSC   KANSAS                       

P: 16AUG2019 118043    37.0N   98.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 14AUG2019 09:07:18  44.7N   78.4W MB=1.8  ECAN Bobcaygeon, ON                  

P:  8AUG2019 117837    43.0N   78.0W 2.0-3.8 CBAAA  New York State             

 

O: 13AUG2019 16:47:27  47.7N   69.9W MB=1.3  ECAN Charlevoix Seismic Zone        

P: 14AUG2019 118061    47.0N   69.0W 2.0-3.9 AAAAA  Maine                      

 

HAWAII

 

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

 

MODERATE QUAKE SHAKES SOUTHEASTERN ALASKA

 

EARTHQUAKE SUMMARY FOR AUGUST 13, 2019

 

The strongest earthquake in the U.S. or Canada today was an M 4.5-4.9 in Southeastern Alaska. NEIC reported it was felt with intensity II-III in Alaska at Gustavus and Douglas. This is the strongest in the current series of events in southeastern Alaska which began after the geomagnetic storm of August 5-6 and was reported in this summary at the time as:

 

"The activity off the coast of southeastern Alaska also continued today. This may have been promoted by the geomagnetic storm and included the largest event in the current swarm - an M 4.0. The last earthquake within about 200 km of today's epicenter with M>=4 occurred on September 21, 2017 (M 4.0) and before that on August 18, 2017 also with M 4.0. Forecast 117872 had expected today's activity was likely around August 5." (August 6-7. 2019).

 

"The geomagnetic field saw minor to major storm conditions today. The AP level was 35.  High latitude geomagnetic field saw major storm conditions  with AP at 61. This is the greatest disturbance in the geomagnetic field since AP reached 36 on May 14, 2019. The last storm of significantly larger AP occurred nearly a year ago on August 26, 2008 when AP reached 76 and high latitude AP was 90. Seismic increases are likely at high latitudes and within about 15 degrees of the geomagnetic equator beginning August 6 through August 11 due to triggering effects from this storm. The most likely timing of a strong to major event is August 10-12, the most likely regions - Indonesia and southeastern Alaska." (August 6-8, 2019)

 

The last earthquake within about 200 km of today's epicenter with M>=4.9 in Southeastern Alaska occurred two years ago on September 16, 2017, an M 5.1 aftershock of an M 6.3 of May 1, 2017. Forecast 1218086 had expected today's event was likely around August 15.

 

O: 14AUG2019 01:08:28  58.1N  137.7W Mw=4.5  EMSC   SOUTHEASTERN ALASKA          

O: 14AUG2019 01:08:35  58.4N  136.6W MB=4.9  ECAN OF JUNEAU, AK                  

P:  5AUG2019 117872    58.0N  136.0W 3.0-4.4 CAAAA  Southeast Alaska           

P: 15AUG2019 118086    58.3N  138.5W 3.0-4.9 AAAAA  British Colombia           

 

An earthquake of M 5.2 in the Bouvet Island Region of the South Atlantic occurred today. This is the strongest earthquake within about 200 km of this epicenter in the Bouvet Islands since an    M 5.3 on March 6, 2019. The last of significantly larger magnitude in the Bouvet area was an  6.5 on December 13, 2017. Forecast 118151 had expected this activity within about 100 km of this epicenter in mid-August. This epicenter is antipodal to the Rat Islands and the western Andreanof Islands in the Aleutians. A sympathetic antipodal moderate earthquake in this region may occur in the next several days.

 

O: 14AUG2019 03:02:26  54.7S    0.8W mb=5.2  EMSC   BOUVET ISLAND REGION         

P: 21AUG2019 118151    55.0S    2.0E 4.0-5.3 CABAA  Atlantic-Indian Ridge      

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: 13AUG2019 10:50:09  34.6N   77.8E ML=4.2  EMSC   EASTERN KASHMIR              

P: 21AUG2019 118027    35.0N   75.0E 3.8-5.1 CABAA  Northern India             

 

O: 13AUG2019 23:31:08  34.9N   56.5E mb=4.5  EMSC   CENTRAL IRAN                 

P:  9AUG2019 117810    31.0N   57.0E 3.8-5.1 BCAAA  So. Iran                   

 

O: 13AUG2019 22:57:19  37.7N   72.2E mb=4.1  EMSC   TAJIKISTAN                   

P: 18AUG2019 118017    37.0N   72.0E 3.8-5.1 BAAAA  Hindu Kush/Pakistan        

 

O: 13AUG2019 07:21:07  41.3N   78.8E mb=4.1  EMSC   SOUTHERN XINJIANG, CHINA     

P: 21AUG2019 118059    40.0N   78.0E 4.0-5.3 CBAAA  Kirgizstan/Xinjiang        

 

O: 13AUG2019 07:16:07  56.1N  163.7E mb=4.4  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  4AUG2019 117864    56.0N  166.0E 4.0-5.5 CABAA  Komandorsky Isl            

 

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

 

INDONESIA AND PHILIPPINES

 

O: 14AUG2019 02:50:02   0.9S  128.3E ML=4.5  EMSC   HALMAHERA, INDONESIA         

P: 17AUG2019 117949     1.0S  127.0E 4.0-5.3 BAAAA  Ceram area                 

 

O: 14AUG2019 02:17:10   1.1N  124.2E ML=4.2  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 17AUG2019 117940     0.0N  124.0E 4.0-5.3 BBAAA  Mindanao, Philippines      

 

O: 13AUG2019 08:47:14   1.3N  128.2E ML=4.0  EMSC   HALMAHERA, INDONESIA         

P: 13AUG2019 117940     1.0N  126.0E 4.0-5.3 AABAA  Mindanao, Philippines      

 

O: 13AUG2019 18:38:38   3.1S  101.3E mb=5.1  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  5AUG2019 117731     2.0S  101.0E 4.0-5.3 CBAAA  So. of Sumatera            

 

O: 13AUG2019 17:47:42   4.5N   97.8E ML=4.1  EMSC   NORTHERN SUMATRA, INDONESIA  

P:  6AUG2019 117716     5.0N   97.0E 4.0-5.3 CAAAA  Nicobar Islands            

 

O: 13AUG2019 18:48:22   8.9S  124.1E mb=4.7  EMSC   KEPULAUAN ALOR, INDONESIA    

P: 18AUG2019 117951     8.0S  124.0E 4.0-5.3 BAAAA  Flores Island area         

 

O: 13AUG2019 22:12:40   9.1N  126.1E mb=4.6  EMSC   MINDANAO, PHILIPPINES        

P: 17AUG2019 117936     9.0N  126.0E 4.0-5.3 BAAAA  Central Philippines        

 

O: 13AUG2019 13:40:09   9.8S  114.0E mb=4.8  EMSC   SOUTH OF JAVA, INDONESIA     

O: 13AUG2019 10:21:31   9.9S  113.9E mb=4.8  EMSC   SOUTH OF JAVA, INDONESIA     

P:  6AUG2019 117729     9.0S  114.0E 4.0-5.3 CAAAA  So. of Bali                

P: 15AUG2019 117960     9.0S  114.0E 4.0-5.3 AAAAA  So. of Java                

 

NEIC reported this earthquake of M 4.9 South of Bali, Indonesia  was felt with intensity II-III in the area(s) of South of Bali, Indonesia at Kuta.

 

O: 14AUG2019 01:39:41  19.5N  145.7E mb=4.5  EMSC   MAUG ISLANDS REG, N. MARIANA I

P: 11AUG2019 117768    23.0N  143.0E 4.0-5.3 BCCAA  Volcano Islands             

 

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 13AUG2019 23:11:30   9.5N   84.5W ML=4.1  EMSC   COSTA RICA                   

P:  5AUG2019 117713     9.0N   84.0W 3.5-4.9 CAAAA  Costa Rica                 

 

O: 13AUG2019 15:50:04  10.2S   77.2W mb=5.0  EMSC   NEAR COAST OF CENTRAL PERU   

P: 14AUG2019 118117    10.0S   75.0W 3.5-5.1 AABAA  Brazil                     

 

NEIC reported this earthquake of M 5.1 off the coast of Central Peru was felt with maximum intensity VI in Huallanca, and IV in Huaraz, Ancash and Barranca, Lima, Peru and intensity II-III in the area(s) off the coast of Central Peru Huanuco, Lima, San Luis and Trujillo La Libertad.

 

O: 14AUG2019 01:14:32  13.8N   92.1W ML=4.2  EMSC   OFFSHORE GUATEMALA           

O: 13AUG2019 15:30:55  14.5N   92.7W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 13AUG2019 117970    16.0N   92.0W 3.5-5.0 ABAAA  Guatemala                  

 

O: 14AUG2019 06:32:37  15.5N   94.9W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

O: 13AUG2019 10:00:30  16.1N   94.8W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P: 13AUG2019 117966    15.0N   95.0W 3.5-5.0 AAAAA  Chiapas, Mexico            

 

O: 14AUG2019 00:10:01  18.2N   72.0W ML=3.3  EMSC   HAITI REGION                 

P:  5AUG2019 117752    19.0N   71.0W 3.4-4.8 CAAAA  Puerto Rico                

 

O: 13AUG2019 12:59:39  18.5N   69.0W ML=3.1  EMSC   DOMINICAN REPUBLIC           

P:  8AUG2019 117752    18.0N   69.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 14AUG2019 02:27:26  19.0N   64.1W Md=3.4  EMSC   VIRGIN ISLANDS REGION        

P: 14AUG2019 117973    18.0N   65.0W 3.0-4.8 AAAAA  Leeward Islands            

 

O: 13AUG2019 17:51:32  19.3N   73.5W ML=3.2  EMSC   HAITI REGION                 

O: 13AUG2019 22:27:29  19.6N   70.8W ML=3.2  EMSC   DOMINICAN REPUBLIC           

P:  5AUG2019 117752    19.0N   71.0W 3.4-4.8 CAAAA  Puerto Rico                

 

NEIC reported this earthquake of M 3.2 in the Dominican Republic  was felt with intensity II-III in the area(s) of the Dominican Republic at Santiago.

 

O: 13AUG2019 11:13:42  25.5S   70.9W Mw=4.0  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

P: 11AUG2019 117907    24.0S   69.0W 4.0-5.3 ABBAA  Coast No. Chile            

 

O: 13AUG2019 07:46:14  40.2S   72.0W ML=4.3  EMSC   LOS LAGOS, CHILE             

P:  6AUG2019 117918    37.0S   73.0W 4.0-5.4 CCAAA  Central Chile              

 

 

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

 

AFRICA AND EUROPE

 

O: 13AUG2019 21:11:19  35.7N   23.6E ML=4.1  EMSC   CRETE, GREECE                

P:  9AUG2019 117769    36.0N   24.0E 3.0-4.3 BAAAA  Aegean Sea                 

 

NEIC reported this earthquake of M 4.5 in Crete, Greece  was felt with intensity II-III in the area(s) of Crete, Greece at Kolimvai, Ayia Marina, Galatas, Daratsos, Khania, Hania and Ayia Manna, Dodecanese Islands, Greece.

 

O: 13AUG2019 11:17:18  44.5N    9.8E ML=4.1  EMSC   NORTHERN ITALY               

P:  9AUG2019 117829    44.0N   11.0E 3.0-4.8 BAAAA  Italy                      

 

O: 13AUG2019 19:36:36  66.7N   17.9W ML=3.0  EMSC   ICELAND REGION               

P: 15AUG2019 118109    66.0N   17.0W 3.0-4.3 AAAAA  Iceland area               

 

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

 

SOUTHWEST PACIFIC

 

O: 14AUG2019 01:57:23  16.1S  173.4W mb=4.2  EMSC   TONGA                        

P: 15AUG2019 118124    16.0S  174.0W 4.0-5.3 AAAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O: 13AUG2019 10:23:39   4.5S  105.1W mb=4.3  EMSC   CENTRAL EAST PACIFIC RISE    

P:  7AUG2019 117725     4.0S  104.0W 4.0-5.4 CAAAA  No. East Pacific Rise      

 

O: 14AUG2019 03:02:26  54.7S    0.8W mb=5.2  EMSC   BOUVET ISLAND REGION         

P: 21AUG2019 118151    55.0S    2.0E 4.0-5.3 CABAA  Atlantic-Indian Ridge      

 

 

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: 13AUG2019 22:02:53  39.0N  142.2E mb=4.5  EMSC   NEAR EAST COAST OF HONSHU, JAP

P: 15AUG2019 118056    41.0N  143.0E 3.5-5.3 ABAAA  Hokkaido, Japan            

P: 17AUG2019 118029    38.0N  141.0E 4.0-5.3 BAAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 14AUG2019 05:37:59  35.6N  117.5W ML=2.2  EMSC   SOUTHERN CALIFORNIA

O: 14AUG2019 05:00:51  35.7N  117.5W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 14AUG2019 02:44:44  35.8N  117.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 14AUG2019 02:42:12  35.7N  117.5W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 14AUG2019 01:31:40  36.2N  117.9W Ml=2.4  EMSC   CENTRAL CALIFORNIA

O: 13AUG2019 23:30:01  36.1N  117.9W Ml=2.8  EMSC   CENTRAL CALIFORNIA

O: 13AUG2019 22:53:38  36.1N  117.9W Ml=2.8  EMSC   CENTRAL CALIFORNIA

O: 13AUG2019 22:18:12  35.7N  117.5W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 13AUG2019 21:08:44  35.8N  117.7W Ml=2.1  EMSC   CENTRAL CALIFORNIA

O: 13AUG2019 20:48:08  35.7N  117.4W Ml=2.3  EMSC   SOUTHERN CALIFORNIA

O: 13AUG2019 19:46:04  35.8N  117.7W ML=2.1  EMSC   CENTRAL CALIFORNIA

O: 13AUG2019 19:21:19  35.5N  117.4W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 13AUG2019 17:25:37  35.6N  117.5W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 13AUG2019 15:59:59  35.9N  117.7W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 13AUG2019 15:14:25  35.8N  117.7W Ml=2.5  EMSC   CENTRAL CALIFORNIA

O: 13AUG2019 12:07:23  35.7N  117.5W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 13AUG2019 118005    36.0N  117.7W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 13AUG2019 13:12:20  34.0N  116.8W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 11AUG2019 117807    34.1N  117.4W 2.5-4.4 AAAAA  So. California              

 

O: 13AUG2019 13:11:13  35.5N  118.4W Ml=2.4  EMSC   CENTRAL CALIFORNIA           

P: 16AUG2019 118038    35.6N  118.4W 2.5-4.5 BAAAA  So. California             

 

O: 13AUG2019 10:31:12  37.4N  121.7W Md=2.5  EMSC   SAN FRANCISCO BAY AREA, CALIF.

P: 13AUG2019 118011    37.3N  121.6W 2.5-4.3 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.5 in Northern California was felt with intensity II-III in the area(s) of San Jose, California.

 

O: 14AUG2019 03:28:36  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P: 15AUG2019 118013    38.8N  122.8W 2.5-4.3 AAAAA  Central California         

 

O: 13AUG2019 16:24:59  39.0N  123.0W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P: 14AUG2019 118013    39.8N  123.5W 2.5-4.3 AAAAA  Central California         

 

 

ALASKA

 

O: 13AUG2019 14:00:22  57.6N  154.7W ML=3.4  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 13AUG2019 118080    54.7N  156.9W 3.5-4.8 ACBAA  Alaska Peninsula           

 

O: 14AUG2019 01:08:28  58.1N  137.7W Mw=4.5  EMSC   SOUTHEASTERN ALASKA          

O: 14AUG2019 01:08:35  58.4N  136.6W MB=4.9  ECAN OF JUNEAU, AK                  

P:  5AUG2019 117872    58.0N  136.0W 3.0-4.4 CAAAA  Southeast Alaska           

P: 15AUG2019 118086    58.3N  138.5W 3.0-4.9 AAAAA  British Colombia           

 

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: 13AUG2019 13:02:06  31.7N  104.3W ML=2.7  EMSC   WESTERN TEXAS                 

P: 11AUG2019 117802    31.4N  103.8W 2.0-3.9 AAAAA  SW U.S.A                   

 

O: 14AUG2019 01:28:40  44.4N  116.1W ML=2.6  EMSC   SOUTHERN IDAHO               

P:  8AUG2019 117835    44.4N  114.1W 2.0-3.9 CABAA  Montana/Idaho              

 

NEIC reported this earthquake of M 2.6 in Idaho  was felt with intensity IV in the area(s) of Idaho at Cascade.

 

EASTERN U.S./CANADA

 

O: 13AUG2019 23:25:17  35.2N   95.3W mb=2.6  EMSC   OKLAHOMA                     

P: 15AUG2019 118042    35.0N   96.0W 2.0-3.8 AAAAA  Southeast U.S.             

 

O: 14AUG2019 01:23:43  35.8N   98.1W ML=2.3  EMSC   OKLAHOMA                     

O: 14AUG2019 05:14:22  36.1N   99.7W ML=2.7  EMSC   OKLAHOMA                     

P: 16AUG2019 118043    37.0N   98.0W 2.0-4.1 AAAAA  Southern Plains            

 

O: 13AUG2019 19:40:19  36.7N   97.7W mb=3.2  EMSC   OKLAHOMA                     

P: 13AUG2019 118043    36.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.0 in Oklahoma  was felt with intensity II-III in the area(s) of Oklahoma at Claremore.

An M 3.4 was reported with intensity III in Pond Creek, Oklahoma.

 

O: 12AUG2019 17:17:32  72.2N  133.2W MB=4.0  ECAN Baillie, NT                    

P:  8AUG2019 117889    71.0N  134.0W 2.5-3.9 BBAAA  Yukon Territory, Canada    

 

O: 12AUG2019 10:56:00  45.0N   75.3W MB=1.4  ECAN Morrisburg, ON                 

P: 14AUG2019 118065    46.0N   75.0W 2.0-3.8 AAAAA  New York State             

 

O: 12AUG2019 04:52:30  82.6N   39.3W MB=4.0  ECAN Alert, NU                      

 

HAWAII

 

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

 

STRONG QUAKE SHAKES SOUTH ISLAND, NEW ZEALAND

 

EARTHQUAKE SUMMARY FOR AUGUST 12, 2019

 

The earth system was struck with stresses associated with end effects of a strong geomagnetic storm; an upcoming full moon which arrives at 12:29 UT on August 15; oceanic Storms; and distance effects from recent strong earthquakes. Together, these brought active seismicity pattern today. The geomagnetic effects were expected as:

 

"The geomagnetic field saw minor to major storm conditions today. The AP level was 24.  High latitude geomagnetic field saw active conditions  with AP at 12.  This is the greatest disturbance in the geomagnetic field since AP reached 36 on May 14, 2019.  The last storm of significantly larger AP occurred nearly a year ago on August 26, 2008 when AP reached 76 and high latitude AP was 90. Seismic increases are likely at high latitudes and within about 15 degrees of the geomagnetic equator beginning August 6 through August 11 due to triggering effects from this storm. The most likely timing of a strong to major event is August 10-12, the most likely regions - Indonesia, the Philippines the Southwest Pacific and Alaska." (August 6-7, 2019)

 

While seismicity possibly associated with the full moon was noted as:

 

"The full moon arrives on August 15 at 12:29 UT. Longitudes which are anti-solar at this time include the Southwestern Pacific near 175 East and include the Fiji/Tonga/New Zealand area and the western Aleutians. In the west these longitudes are near 5 West and include western Europe and portions of the Mid-Atlantic Ridge. These area the areas most likely to see tidal triggering in the next week, but tidal triggering is common and can be recognized by the timing of earthquakes near local solar midnight and noon." (August 12-13, 2019)

 

The largest earthquake in the world today was an M 5.4 in the area of South Island, New Zealand. NEIC reported maximum intensity V in Te Anau, Southland, New Zealand and IV in Ohai and in Otago at Queenstown and Arrowtown. It was also felt with intensity II-III in Wanaa, Mount Cook, Canterbury, Invercargill, Outram, Waitati and Dunedin, South Island. GEONET reported 6878 people felt this quake with 2755 with weak intensity; 3119 with light intensity and 883 with moderate intensity. 109 reported strong intensity, 5 severe shaking and 7 with extreme intensity. It was followed by a strong aftershock sequence with many felt light earthquakes. This activity is located at 103 degrees from the M 7.1 in Southern/Central California of July 6 and, as noted in the previous issue of this summary, was probably

promoted from that source:

 

 

"The strongest earthquake of the day occurred in South Island, New Zealand where an M 4.7-5.2 in South Island, New Zealand was widely felt today. GEONET reported this earthquake was felt with moderate intensity in northern South Island. 2100 people reported feeling this event;  1135 with weak intensity; 884 with light shaking; 76 moderate; 4 strong; 1 with severe and 0 with extreme shaking. NEIC reported this earthquake at M 4.7 in South Island, New Zealand was felt with intensity II-III in the area(s) of Mapua, Tapawera, Tasman and Nelson, South Island, New Zealand and in Wellington, North Island.  The last earthquake of M>=5.2 within about 150 km of today's epicenter occurred January 5, 2017 with M 5.4. It was probably a regional aftershock of the M 7.8 which hit the region on November 13, 2016. Forecast 117927 had expected today's event was likely around August 6-11. Southern New Zealand from Snares Island north became very active following the M 7.1 earthquake in Central California of July 6. This activation has included events up to M 6.7 and a number of moderate to moderately large quakes in the past month. The area lies near 103 degrees from the California epicenters and from the M 8.0 in Peru of May, 2019  and was probably promoted from those sources as previously proposed in this summary:

 

 

"California seismicity, especially around Southern California was enhanced today. Eight earthquakes outside the immediate Ridgecrest aftershock zone reach M>-3 magnitudes today in this area. One of the specialties of this summary, not generally available elsewhere is enhancement of seismicity at far-field distances. These generally include enhanced seismicity at nodal distances (51, 60, 72. 90, 103, 120, 144 and 180 degrees) from the epicenter of the major earthquake. ...  Those at or near 103 degrees from Southern California include southern New Zealand, Greece and Turkey and Iran/Iraq, Central Asia and China, the Northern Philippines, New Britain and eastern Indonesia. These areas could see enhanced seismicity in the coming days and are marked on the accompanying map by stippled white lines." (July 6, 2019), (August 11-12, 2019)

 

The last earthquake in the Te Anau area of New Zealand's South Island with M>=6.1 occurred more than 10 years ago in July and August, 2009 when an M 7.8 on July 15, 2009 was followed by an M 6.1 on August 5, 2009 about 150 km southwest of today's epicenter. Forecast 117928 had expected today's event within about 100 km of this epicenter was likely around August 7.

 

O: 12JUN2019 10:35:27  44.5S  167.9E ML=6.1  GEONET reported 6878 people felt this quake

O: 12AUG2019 10:35:28  44.6S  167.9E mb=5.5  EMSC   SOUTH ISLAND OF NEW ZEALAND  

P:  7AUG2019 117928    45.0S  167.0E 3.0-4.9 BAAAA  So. Island, N.Z.           

 

An M 4.8 in Western Australia also occurred today. It is south of the M 6.6 which hit the area in late July and is not part of the classic aftershock series which is continuing at a lower magnitude level. An M 4.4 occurred about 50 km east of this on June 15, 2019, but there have been no earthquakes of M>=4.8 within about 200 km of this epicenter in the past 30 years. It may have been triggered by the M 6.1 in South Island, New Zealand earlier in the day. Forecast 117915 had expected a moderate earthquake in the area in early August.

 

O: 12AUG2019 19:11:47  21.4S  120.5E ML=4.8  EMSC   WESTERN AUSTRALIA            

P:  6AUG2019 117915    19.0S  120.0E 2.0-3.3 CCAAA  Central Australia          

 

Two moderate earthquakes of M 4.9 and 5.2 also occurred in the Kermadec Islands at the north end of the New Zealand/Kermadec arc. These had been expected within about 100 km to occur around August 7.

 

O: 13AUG2019 01:45:50  31.4S  177.4W mb=4.9  EMSC   KERMADEC ISLANDS REGION      

O: 13AUG2019 06:35:01  31.6S  177.5W mb=5.2  EMSC   KERMADEC ISLANDS REGION      

P:  7AUG2019 117924    31.0S  179.0W 4.0-5.4 AAAAA  So. Kermadec Islands       

 

An M 5.5 also occurred today off the coast of Chiapas, Mexico. NEIC reported this earthquake of M 5.5 in Chiapas, Mexico  was felt with intensity IV in Tuxtla Gutierrez; IV in Paraiso, Tabasco Bochil, Chiapas, Mexico and II-III in the area(s) of Chiapas, Mexico at Chiapa, San Cristobal de las Casas, Salina Cruz, Oaxaca, Villahermosa Tabasco, San Benito Peten, Guatemala, Belmopan and Belize, Belize. This is the strongest quake in Chiapas within about 200 km of this epicenter since an M 5.8 on January 21, 2019 and prior to that an M 5.5 on April 11, 2018. Forecast 117740 had expected a moderate quake in the area was likely around August 8.

 

O: 12AUG2019 09:25:58  14.9N   94.2W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 12AUG2019 20:39:35  16.0N   93.6W Mw=5.5  EMSC   CHIAPAS, MEXICO              

P:  8AUG2019 117740    14.0N   92.0W 3.5-5.1 BBBAA  Guatemala                  

 

Another area with continuing seismicity at 103 degrees from California was Crete, Greece where an M 4.5 was felt with intensity IV in Dafnes, Iraklion, Greece today.

 

O: 12AUG2019 23:38:56  35.2N   28.0E mb=4.0  EMSC   DODECANESE ISLANDS, GREECE   

P:  9AUG2019 117817    36.0N   28.0E 3.5-4.9 BAAAA  Turkey                     

 

O: 12AUG2019 07:57:08  35.8N   25.7E ML=4.7  EMSC   CRETE, GREECE                

P:  9AUG2019 117769    36.0N   24.0E 3.0-4.3 BABAA  Aegean Sea                  

 

The strongest earthquake in the U.S. or Alaska today was an M 4.5 in Hawaii. NEIC reported it was felt with intensity IV in Hawaii at Pepeekeo, Papaikou, Hakalau, Papaaloa and II-III in Honomu, Keaau, Ninole, Kurtistown, Mountain View and Laupahoehoe, Hawaii. This continues strong regional activation following the M 6.8 in Sumatra of August 2 which is at 103 degrees from today's epicenter as noted when a smaller event hit the area yesterday:

 

 

"Another earthquake of M>=3 occurred in Hawaii today and was widely felt. NEIC reported this earthquake of M 3.0 in Hawaii  was felt with intensity II-III in the area(s) of Hawaiiat Laupahoehoe, Papaaloa, Paauilo, Ookala, Papaikou, Hilo, Honomu, Honolaa and Kamuela. Hawaii has become active in early August 2019 with earthquakes up to M 3.5. It is located at 103 degrees from Sumatra where an M 6.8 hit on August 2 and may be promoted by surface energy from that epicenter. Forecast 117741 had expected today's activity within about 50 km around August 11. Regional seismicity in Hawaii is likely to remain high for the next week with the possibility of a moderate quake in that time." (August 11-12, 2019)

 

This active period in Hawaii was also probably brought about by several Hurricanes which passed through the islands last week as noted in previous summaries:

 

"Hurricane Flossie continued northeast of Hawaii today with winds up to 40 kts. This system is currently showing no signs of  seismic impact in this region as it is expected  to move to the west over the next several days." (August 7-9, 2019)

 

The last activity in Hawaii with M>=4.5 occurred April 14, 2019 with M 5.3. The only comparable activity in the area since the end of the 2018 eruption in August, 2018 was an M 5.5 on March 13, 2019. Forecast 117741 had expected a moderate earthquake in Hawaii was likely around August 11.

 

O: 12AUG2019 14:41:56  19.8N  155.0W ML=4.5  EMSC   ISLAND OF HAWAII, HAWAII     

P: 11AUG2019 117741    19.4N  155.3W 3.0-4.3 AAAAA  Hawaii                     

 

The M 4.5 in Hawaii was preceded by an earthquake of M 2.6 in the Oahu, Hawaii region. It occurred near local solar midnight and may have been promoted by tidal stresses which maximize at this hour. This is the strongest event within about 100 km of this epicenter since an M 3.3 on February 3, 2019. Forecast 117758 had expected regional activity in early August.

 

O: 12AUG2019 11:05:21  21.4N  157.3W Ml=2.6  EMSC   OAHU REGION, HAWAII          

P:  7AUG2019 117758    20.4N  155.1W 4.0-5.4 AAAAA  Hawaii area                 

P: 11AUG2019 117741    19.4N  155.3W 3.0-4.3 AAAAA  Hawaii                     

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: 12AUG2019 13:36:58  25.6N   67.9E mb=4.5  EMSC   PAKISTAN                     

P: 10AUG2019 117759    23.0N   70.0E 3.5-4.9 ACBAA  India                      

 

NEIC reported this earthquake of M 4.5 in  Pakistan was felt with intensity VII in Thano Bula Khan Sind, Pakistan and II-III in the area(s) of Pakistan at Hyderabad Sind, Pakistan.

 

O: 12AUG2019 22:32:00  28.4N  104.8E mb=4.7  EMSC   EASTERN SICHUAN, CHINA       

P:  9AUG2019 117764    27.0N  104.0E 4.0-5.3 BBAAA  Myanmar                     

 

O: 12AUG2019 22:09:45  38.6N   90.6E mb=4.6  EMSC   XINJIANG-QINGHAI BDR REG, CHIN

P: 10AUG2019 117821    35.0N   90.0E 3.8-5.1 ACAAA  Xizang                     

 

O: 12AUG2019 17:14:46  40.9N   73.4E Mw=4.6  EMSC   KYRGYZSTAN                    

P: 11AUG2019 117831    41.0N   73.0E 4.0-5.4 AAAAA  Kirgizstan/Xinjiang        

 

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

 

INDONESIA AND PHILIPPINES

 

O: 12AUG2019 22:33:21   0.5S  119.9E ML=4.0  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  5AUG2019 117733     1.0S  120.0E 4.0-5.3 CAAAA  Sulawesi area              

 

O: 12AUG2019 22:14:48   0.7S  128.0E ML=4.5  EMSC   HALMAHERA, INDONESIA         

P: 11AUG2019 117715     1.0N  126.0E 4.0-5.3 ABBAA  Mindanao, Philippines      

 

O: 12AUG2019 09:25:11   1.2S  117.8E ML=4.4  EMSC   MAKASSAR STRAIT, INDONESIA   

P:  6AUG2019 117733     2.0S  123.0E 4.0-5.3 CACAA  Sulawesi area              

 

O: 13AUG2019 00:12:58   1.4N  126.7E ML=4.0  EMSC   MOLUCCA SEA                   

P: 11AUG2019 117715     1.0N  126.0E 4.0-5.3 AAAAA  Mindanao, Philippines      

 

O: 12AUG2019 13:57:52   5.1S  134.2E mb=4.8  EMSC   KEPULAUAN ARU REGION, INDONESI

P:  9AUG2019 117728     3.0S  133.0E 4.0-5.3 BBAAA  Papua New Guinea           

 

O: 12AUG2019 10:38:12   5.8N  126.3E ML=4.8  EMSC   MINDANAO, PHILIPPINES        

P:  6AUG2019 117715     5.0N  124.0E 4.0-5.3 CABAA  Mindanao, Philippines      

 

O: 13AUG2019 00:08:43   6.1N   95.5E ML=4.7  EMSC   NICOBAR ISLANDS, INDIA REGION

P:  6AUG2019 117716     5.0N   97.0E 4.0-5.3 CBBAA  Nicobar Islands            

 

O: 13AUG2019 03:30:30   6.1N  126.1E mb=4.6  EMSC   MINDANAO, PHILIPPINES        

P:  9AUG2019 117711     8.0N  125.0E 4.0-5.3 BBAAA  Central Philippines        

 

O: 12AUG2019 08:31:24   9.7S  114.0E mb=4.9  EMSC   SOUTH OF BALI, INDONESIA     

O: 12AUG2019 07:43:17   9.8S  114.0E ML=4.5  EMSC   SOUTH OF JAVA, INDONESIA     

P:  6AUG2019 117729     9.0S  114.0E 4.0-5.3 CAAAA  So. of Bali                

 

O: 13AUG2019 03:18:57  11.4S  105.3E ML=4.9  EMSC   SOUTH OF JAVA, INDONESIA     

P:  4AUG2019 117900    10.0S  107.0E 4.0-5.3 CBBAA  So. of Java                

 

 

CENTRAL AND SOUTH AMERICA

 

O: 12AUG2019 21:40     19.2S   69.7W mb=4.5  GUC    Tarapaca at La Tirana and Pozo

O: 12AUG2019 08:17     20.7S   69.2W mb=4.7  GUC    Tarapaca at La Tirana and Pozo

P:  4AUG2019 117912    20.0S   70.0W 4.0-5.3 CAAAA  So. Peru/Bolivia           

P: 11AUG2019 117899    18.0S   71.0W 4.0-5.3 ACBAA  So. Peru/Bolivia           

 

CSN reported this earthquake of M 4.5 was felt with intensity II-III in Tarapaca at La Tirana and Pozo Almonte, Pica, Camina, Alto Hospicio, Iquique, Mamina, Chile

CSN reported the earthquake of M 4.7 was felt with intensity  V in  Tarapaca at La Tirana and Pozo Almonte; IV in Pica, Camina and III in Alto Hospicio, Iquique, Mamina and Pisagua; II in Tocopilla, Antofagasta and III in Arica at Codpa and Cuya, Chile.

 

O: 12AUG2019 12:25:50  10.5N   86.2W mb=4.5  EMSC   OFF COAST OF COSTA RICA      

P:  7AUG2019 117746    13.0N   88.0W 3.5-5.0 BCBAA  Nicaragua                  

 

NEIC reported this earthquake of M 4.5 in Costa Rica  was felt with intensity II-III in the area(s) of Costa Rica at Sardinal and Nicoya, Guanacaste.

 

O: 12AUG2019 09:25:58  14.9N   94.2W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 12AUG2019 20:39:35  16.0N   93.6W Mw=5.5  EMSC   CHIAPAS, MEXICO              

P:  8AUG2019 117740    14.0N   92.0W 3.5-5.1 BBBAA  Guatemala                  

 

O: 12AUG2019 20:50:48  16.7N   94.7W ML=4.1  EMSC   OAXACA, MEXICO               

O: 12AUG2019 19:53:27  17.0N   94.6W ML=4.1  EMSC   OAXACA, MEXICO               

O: 13AUG2019 04:25:40  17.0N   96.5W ML=4.1  EMSC   OAXACA, MEXICO               

O: 12AUG2019 20:59:02  17.5N   94.8W ML=4.2  EMSC   VERACRUZ, MEXICO             

P: 11AUG2019 117748    16.0N   98.0W 3.5-5.2 ABCAA  Oaxaca, Mexico             

 

O: 13AUG2019 01:36:40  18.1N   70.7W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

O: 12AUG2019 14:15:56  18.4N   68.7W Md=3.2  EMSC   DOMINICAN REPUBLIC            

P:  8AUG2019 117752    18.0N   69.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 12AUG2019 16:36:12  18.4N   93.1W ML=4.1  EMSC   OFFSHORE TABASCO, MEXICO     

P:  2AUG2019 117740    15.0N   91.0W 3.5-5.1 CCBAA  Guatemala                  

 

O: 12AUG2019 18:54:31  18.5N   70.4W ML=3.0  EMSC   DOMINICAN REPUBLIC           

O: 12AUG2019 23:20:40  18.8N   69.1W ML=3.3  EMSC   DOMINICAN REPUBLIC           

P:  8AUG2019 117752    18.0N   69.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 12AUG2019 13:13:26  19.1N   67.7W ML=3.2  EMSC   PUERTO RICO REGION           

O: 12AUG2019 08:38:06  19.3N   68.3W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P:  8AUG2019 117751    19.0N   67.0W 3.4-4.8 BAAAA  Puerto Rico                

 

O: 12AUG2019 21:40:19  19.3S   69.7W Mw=4.5  EMSC   TARAPACA, CHILE              

P: 11AUG2019 117899    18.0S   71.0W 4.0-5.3 ABAAA  So. Peru/Bolivia           

 

O: 12AUG2019 08:17:48  20.9S   69.2W mb=4.7  EMSC   TARAPACA, CHILE              

P:  4AUG2019 117912    20.0S   70.0W 4.0-5.3 CAAAA  So. Peru/Bolivia           

 

NEIC reported this earthquake of M 4.7 in Northern Chile  was felt with intensity II-III in the area(s) of Chile at Iquique, Tarapaca, Chile.  

 

O: 13AUG2019 04:53:50  22.2S   68.7W ML=4.3  EMSC   ANTOFAGASTA, CHILE           

P: 11AUG2019 117907    24.0S   69.0W 4.0-5.3 ABAAA  Coast No. Chile            

 

 

AFRICA AND EUROPE

 

O: 12AUG2019 23:38:56  35.2N   28.0E mb=4.0  EMSC   DODECANESE ISLANDS, GREECE   

P:  9AUG2019 117817    36.0N   28.0E 3.5-4.9 BAAAA  Turkey                     

 

O: 12AUG2019 07:57:08  35.8N   25.7E ML=4.7  EMSC   CRETE, GREECE                

P:  9AUG2019 117769    36.0N   24.0E 3.0-4.3 BABAA  Aegean Sea                 

 

O: 12AUG2019 13:34:28  38.3N   40.9E ML=4.1  EMSC   EASTERN TURKEY               

P:  9AUG2019 117825    40.0N   41.0E 3.5-4.8 BBAAA  Caucasus/Caspian Sea       

 

O: 12AUG2019 15:37:08  41.9N   20.2E mb=4.2  EMSC   ALBANIA                      

P:  6AUG2019 117847    41.0N   20.0E 3.0-5.0 CAAAA  Romania/NW Turkey          

 

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

 

SOUTHWEST PACIFIC

 

O: 13AUG2019 03:58:54  13.1S  167.1E mb=4.6  EMSC   VANUATU                      

P: 10AUG2019 117903    14.0S  167.0E 4.0-5.3 BAAAA  Vanuatu Islands            

 

O: 12AUG2019 17:20:22  23.7S  179.4W mb=4.8  EMSC   SOUTH OF FIJI ISLANDS        

P: 10AUG2019 117913    22.0S  180.0W 4.0-5.3 ABAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 12AUG2019 22:40:58  29.2S   97.0E Mw=4.9  EMSC   SOUTH INDIAN OCEAN           

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 12AUG2019 19:11:47  21.4S  120.5E ML=4.8  EMSC   WESTERN AUSTRALIA            

P:  6AUG2019 117915    19.0S  120.0E 2.0-3.3 CCAAA  Central Australia          

 

O: 13AUG2019 01:45:50  31.4S  177.4W mb=4.9  EMSC   KERMADEC ISLANDS REGION      

O: 13AUG2019 06:35:01  31.6S  177.5W mb=5.2  EMSC   KERMADEC ISLANDS REGION      

P:  7AUG2019 117924    31.0S  179.0W 4.0-5.4 AAAAA  So. Kermadec Islands       

 

O: 12AUG2019 10:35:28  44.6S  167.9E mb=5.5  EMSC   SOUTH ISLAND OF NEW ZEALAND  

P:  7AUG2019 117928    45.0S  167.0E 3.0-4.9 BAAAA  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: 13AUG2019 05:25:49  35.7N  117.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 13AUG2019 05:16:06  35.7N  117.5W Ml=2.4  EMSC   SOUTHERN CALIFORNIA

O: 13AUG2019 00:26:41  36.0N  117.4W Ml=2.1  EMSC   CENTRAL CALIFORNIA

O: 12AUG2019 23:41:27  35.9N  117.7W Ml=2.8  EMSC   CENTRAL CALIFORNIA

O: 12AUG2019 23:30:53  35.7N  117.5W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 12AUG2019 23:12:05  35.7N  117.6W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 12AUG2019 22:10:37  36.0N  117.7W ML=2.0  EMSC   CENTRAL CALIFORNIA

O: 12AUG2019 21:34:47  35.9N  117.8W ML=2.1  EMSC   CENTRAL CALIFORNIA

O: 12AUG2019 19:45:39  35.6N  117.4W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 12AUG2019 19:36:14  35.7N  117.5W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 12AUG2019 19:22:17  35.8N  117.7W Ml=2.4  EMSC   CENTRAL CALIFORNIA

O: 12AUG2019 19:20:25  36.1N  117.9W Ml=2.7  EMSC   CENTRAL CALIFORNIA

O: 12AUG2019 17:42:41  35.7N  117.6W Ml=2.2  EMSC   SOUTHERN CALIFORNIA

O: 12AUG2019 17:06:51  35.7N  117.5W Ml=2.1  EMSC   SOUTHERN CALIFORNIA

O: 12AUG2019 15:47:09  35.9N  117.7W Ml=2.0  EMSC   CENTRAL CALIFORNIA

O: 12AUG2019 15:06:18  35.7N  117.6W Ml=2.0  EMSC   SOUTHERN CALIFORNIA

O: 12AUG2019 15:01:30  35.9N  117.7W ML=2.0  EMSC   CENTRAL CALIFORNIA

O: 12AUG2019 12:56:01  36.2N  117.9W Ml=2.0  EMSC   CENTRAL CALIFORNIA

O: 12AUG2019 08:41:03  35.9N  117.7W Ml=2.0  EMSC   CENTRAL CALIFORNIA           

P: 11AUG2019 117771    36.1N  118.1W 2.5-4.5 AAAAA  California/Nevada area     

P: 11AUG2019 117808    35.7N  118.1W 2.5-4.5 AAAAA  So. California             

 

O: 13AUG2019 04:27:33  34.0N  117.3W Ml=2.5  EMSC   GREATER LOS ANGELES AREA, CALI

P: 11AUG2019 117807    34.1N  117.4W 2.5-4.4 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.5 in  Southern California was felt with intensity IV in Riverside, California  and II-III in the area(s) of Southern California at Fontana, Norco, and Chino Hills.

 

O: 13AUG2019 03:06:41  37.2N  118.3W Md=2.3  EMSC   CENTRAL CALIFORNIA           

O: 12AUG2019 23:55:00  37.6N  118.8W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P: 10AUG2019 117773    37.4N  118.6W 2.5-4.3 AAAAA  California/Nevada area     

 

ALASKA

 

O: 13AUG2019 03:22:27  58.9N  138.1W ml=3.5  EMSC   SOUTHEASTERN ALASKA          

P:  9AUG2019 117875    60.0N  139.0W 3.2-4.8 BBAAA  Central Alaska             

 

O: 13AUG2019 00:11:11  61.5N  149.9W ML=3.2  EMSC   SOUTHERN ALASKA              

P: 11AUG2019 117877    61.3N  150.9W 3.2-4.8 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.2 in the  Anchorage, Alaska aftershock zone was felt with intensity II-III in the area(s) of Wasilla, Willow, Anchorage, Chugiak in the  Anchorage, Alaska aftershock zone.

 

O: 12AUG2019 08:19:28  62.8N  157.0W ml=3.2  EMSC   CENTRAL ALASKA               

P:  7AUG2019 117883    65.0N  155.0W 3.0-4.5 BCAAA  Northern Alaska            

 

O: 12AUG2019 09:32:33  66.7N  146.7W ml=3.2  EMSC   NORTHERN ALASKA              

P:  7AUG2019 117883    69.0N  144.0W 3.0-4.5 BBAAA  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: 12AUG2019 19:57:33  37.8N  113.2W Ml=2.4  EMSC   UTAH                         

O: 12AUG2019 19:04:50  38.0N  112.4W Ml=2.5  EMSC   UTAH                         

P:  7AUG2019 117774    38.7N  114.5W 2.5-4.3 AAAAA  California/Nevada area     

 

EASTERN U.S./CANADA

 

O: 12AUG2019 09:43:33  35.8N   98.1W ML=2.2  EMSC   OKLAHOMA                     

P:  9AUG2019 117813    36.0N   97.0W 2.0-3.8 BAAAA  Southern Plains            

 

HAWAII

 

O: 12AUG2019 14:41:56  19.8N  155.0W ML=4.5  EMSC   ISLAND OF HAWAII, HAWAII     

P: 11AUG2019 117741    19.4N  155.3W 3.0-4.3 AAAAA  Hawaii                     

 

O: 12AUG2019 11:05:21  21.4N  157.3W Ml=2.6  EMSC   OAHU REGION, HAWAII          

P:  7AUG2019 117758    20.4N  155.1W 4.0-5.4 AAAAA  Hawaii area                

P: 11AUG2019 117741    19.4N  155.3W 3.0-4.3 AAAAA  Hawaii                     

 

MODERATE QUAKE IN SOUTH ISLAND, NEW ZEALAND; PROBABLY PROMOTED FROM CALIFORNIA

 

EARTHQUAKE SUMMARY FOR AUGUST 11, 2019

 

The strongest earthquake of the day occurred in South Island, New Zealand wher an M 4.7-5.2 in South Island, New Zealand was widely felt today. GEONET reported this earthquake was felt with moderate intensity in northern South Island. 2100 people reported feeling this event;  1135 with weak intensity; 884 with light shaking; 76 moderate; 4 strong; 1 with severe and 0 with extreme shaking. NEIC reported this earthquake at M 4.7 in South Island, New Zealand was felt with intensity II-III in the area(s) of Mapua, Tapawera, Tasman and Nelson, South Island, New Zealand and in Wellington, North Island.

The last earthquake of M>=5.2 within about 150 km of today's epicenter occurred January 5, 2017 with M 5.4. It was probably a regional aftershock of the M 7.8 which hit the region on November 13, 2016. Forecast 117927 had expected today's event was likely around August 6-11. Southern New Zealand from Snares Island north became very active following the M 7.1 earthquake in Central California of July 6. This activation has included events up to M 6.7 and a number of moderate to moderately large quakes in the past month. The area lies near 103 degrees from the California epicenters and from the M 8.0 in Peru of May, 2019  and was probably promoted from those sources as previously proposed in this summary:

 

 

"California seismicity, especially around Southern California was enhanced today. Eight earthquakes outside the immediate Ridgecrest aftershock zone reach M>-3 magnitudes today  in this area. One of the specialties of this summary, not generally available elsewhere is enhancement of seismicity at far-field distances. These generally include enhanced seismicity at nodal distances (51, 60, 72. 90, 103, 120, 144 and 180 degrees) from the epicenter of the major earthquake. ...  Those at or near 103 degrees from Southern California include southern New Zealand, Greece and Turkey and Iran/Iraq, Central Asia and China, the Northern Philippines, New Britain and eastern Indonesia. These areas could see enhanced seismicity in the coming days and are marked on the accompanying map by stippled white lines." (July 6, 2019)

 

O: 11AUG2019 20:44:34  41.2S  172.8E mb=4.7  EMSC   SOUTH ISLAND OF NEW ZEALAND  

O: 11AUG2019 20:44:36  41.2S  172.9E ML=5.2  GEONET Felt with moderate intensity

P:  6AUG2019 117927    42.0S  172.0E 3.0-4.8 BAAAA  So. Island, N.Z.           

P: 11AUG2019 117927    43.0S  171.0E 3.0-4.8 ABBAA  So. Island, N.Z.           

 

An unusual earthquake of M 4.1 occurred today in  Hungary.  Only four earthquakes of M>=4.1 have occurred in Hungary within about 150 km of today's epicenter in  the past 30 years. The last of these was an M 4.1 on Jun 5, 2013; the largest were of M 4.4 and 4.3 on April 22, 2013 and January 29, 2011. Forecast 117822 had expected today's event was likely in this area around August 11.

 

O: 11AUG2019 23:29:46  47.6N   20.3E ML=4.1  EMSC   HUNGARY                      

P: 11AUG2019 117822    48.0N   18.0E 3.0-4.9 AABAA  Adriatic Sea               

 

The strongest seismicity in the U.S. or Canada today occurred in the Fox and the Andreanof Islands with two events of M 3.6. Earthquakes at the magnitude level are common in this region and in the past month include and M 3.8 and 4.0 on August 5 and an M 3.7 on July 31, 2019. Forecast 117859 had expected today's activity within about 100 km was likely in early August.

 

O: 11AUG2019 10:29:06  51.9N  173.1W mb=3.6  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P:  4AUG2019 117859    52.3N  174.6W 3.5-4.8 CAAAA  Andreanoff Isls, Aleutians 

 

O: 11AUG2019 08:19:59  52.0N  170.9W mb=3.6  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  6AUG2019 117859    52.4N  170.7W 3.5-4.9 BAAAA  Andreanoff Isls, Aleutians 

 

Another earthquake of M>=3 occurred in Hawaii today and was widely felt. NEIC reported this earthquake of M 3.0 in Hawaii  was felt with intensity II-III in the area(s) of Hawaiiat Laupahoehoe, Papaaloa, Paauilo, Ookala, Papaikou, Hilo, Honomu, Honolaa and Kamuela. Hawaii has become active in early August 2019 with earthquakes up to M 3.5. It is located at 103 degrees from Sumatra where an M 6.8 hit on August 2 and may be promoted by surface energy from that epicenter. Forecast 117741 had expected today's activity within about 50 km around August 11. Regional seismicity in Hawaii is likely to remain high for the next week with the possibility of a moderate quake in that time.

 

O: 11AUG2019 20:02:58  19.9N  155.4W ML=3.0  EMSC   ISLAND OF HAWAII, HAWAII     

P: 11AUG2019 117741    19.4N  155.3W 3.0-4.3 AAAAA  Hawaii                     

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: 11AUG2019 11:07:59  30.4N   94.9E mb=4.6  EMSC   EASTERN XIZANG               

O: 12AUG2019 03:32:30  30.4N   94.9E mb=4.8  EMSC   EASTERN XIZANG               

O: 12AUG2019 03:06:22  30.5N   94.8E mb=4.3  EMSC   EASTERN XIZANG                

P:  8AUG2019 117821    36.0N   94.0E 3.8-5.1 BCAAA  Xizang                     

 

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

 

INDONESIA AND PHILIPPINES

 

O: 11AUG2019 17:52:10   2.8N  129.4E ML=4.4  EMSC   HALMAHERA, INDONESIA         

P: 11AUG2019 117715     1.0N  126.0E 4.0-5.3 ABCAA  Mindanao, Philippines      

 

O: 11AUG2019 17:51:14   5.9N  133.2E Mw=5.0  EMSC   PALAU REGION                 

P:  2AUG2019 117714     3.0N  127.0E 4.0-5.3 CCCAA  Halmahera                   

 

NEIC reported this earthquake of M 5.0 in Palau was felt with intensity II-III in the area(s) of Ngaramash Angaur and Meyungs Koror, Palau.

 

O: 11AUG2019 07:57:28   6.5S  130.2E ML=4.6  EMSC   BANDA SEA                    

P: 11AUG2019 117718     6.0S  129.0E 4.0-5.3 AAAAA  Banda Sea                  

 

O: 11AUG2019 22:08:16   9.0S  114.5E ML=4.9  EMSC   BALI REGION, INDONESIA       

O: 11AUG2019 22:51:35   9.6S  114.0E Mw=4.8  EMSC   SOUTH OF JAVA, INDONESIA     

O: 11AUG2019 22:55:37   9.7S  114.0E ML=4.5  EMSC   SOUTH OF JAVA, INDONESIA     

P:  6AUG2019 117729     9.0S  114.0E 4.0-5.3 BAAAA  So. of Bali                

 

NEIC reported this earthquake of M 4.8 South of Java, Indonesia  was felt with intensity IV in Gambiran, Java and Sinjai, Sulawesi, Indonesia and II-III in the area(s) of Bali at Kuta, Denpasar and Ubud.

 

 

CENTRAL AND SOUTH AMERICA

 

O: 11AUG2019 11:00:10   6.8N   73.0W mb=4.5  EMSC   NORTHERN COLOMBIA            

P:  4AUG2019 117712     7.0N   73.0W 4.0-5.3 CAAAA  Colombia                   

 

O: 11AUG2019 17:09:30  10.3N   86.3W ML=4.3  EMSC   OFF COAST OF COSTA RICA      

P:  7AUG2019 117746    13.0N   88.0W 3.5-5.0 BCBAA  Nicaragua                  

 

O: 12AUG2019 03:23:36  13.2N   89.7W ML=4.3  EMSC   OFFSHORE EL SALVADOR         

P: 11AUG2019 117740    13.0N   90.0W 3.5-5.0 AAAAA  Guatemala                  

 

O: 11AUG2019 13:47:44  15.8N   95.0W ML=4.3  EMSC   OFFSHORE OAXACA, MEXICO      

P:  7AUG2019 117748    17.0N   98.0W 3.5-5.1 ABCAA  Oaxaca, Mexico              

 

O: 12AUG2019 05:05:31  17.3N  100.4W ML=4.1  EMSC   GUERRERO, MEXICO             

P:  6AUG2019 117749    17.0N  100.0W 3.5-5.1 CAAAA  Oaxaca, Mexico             

 

O: 11AUG2019 19:51:33  17.9N   71.6W ML=3.1  EMSC   DOMINICAN REPUBLIC            

O: 11AUG2019 22:10:15  18.0N   71.6W ML=3.0  EMSC   DOMINICAN REPUBLIC           

P:  5AUG2019 117752    19.0N   71.0W 3.4-4.8 CAAAA  Puerto Rico                

 

O: 11AUG2019 12:51:22  19.2N   67.9W Md=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P:  8AUG2019 117751    19.0N   67.0W 3.4-4.8 BAAAA  Puerto Rico                

 

O: 12AUG2019 01:47:02  20.1S   64.6W mb=4.6  EMSC   CHUQUISACA, BOLIVIA          

P: 11AUG2019 117899    18.0S   71.0W 4.0-5.3 ACCAA  So. Peru/Bolivia           

 

O: 11AUG2019 07:41:25  25.0S   70.9W Mw=4.0  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

P: 11AUG2019 117907    24.0S   69.0W 4.0-5.3 AABAA  Coast No. Chile            

 

O: 11AUG2019 18:44:07  28.1S   63.2W mb=4.9  EMSC   SANTIAGO DEL ESTERO, ARGENTINA

P:  8AUG2019 117906    28.0S   68.0W 4.0-5.3 BACAA  Argentina                  

 

O: 12AUG2019 02:30:19  32.2S   65.3W ML=4.0  EMSC   SAN LUIS, ARGENTINA          

P:  2AUG2019 117917    33.0S   69.0W 4.0-5.4 DACAA  Central Chile              

 

NEIC reported this earthquake of M 4.0 in San Luis, Argentina  was felt with intensity II-III in the area(s) of San Luis, Argentina at Alta Gracia. Cordoba.

 

 

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

 

AFRICA AND EUROPE

 

O: 11AUG2019 12:35:08  35.1N   28.0E mb=4.2  EMSC   EASTERN MEDITERRANEAN SEA    

P:  9AUG2019 117817    36.0N   28.0E 3.5-4.9 AAAAA  Turkey                     

 

O: 11AUG2019 23:29:46  47.6N   20.3E ML=4.1  EMSC   HUNGARY                      

P: 11AUG2019 117822    48.0N   18.0E 3.0-4.9 AABAA  Adriatic Sea               

 

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

 

SOUTHWEST PACIFIC

 

O: 11AUG2019 07:20:58  18.0S  178.4W mb=4.5  EMSC   FIJI REGION                  

P:  6AUG2019 117901    18.0S  180.0W 4.0-5.3 BAAAA  Tonga Islands              

 

O: 11AUG2019 16:38:59  23.9S  179.9W mb=4.5  EMSC   SOUTH OF FIJI ISLANDS        

P: 10AUG2019 117913    22.0S  180.0W 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: 11AUG2019 17:34:57  37.1N   20.9W mb=4.7  EMSC   AZORES ISLANDS REGION        

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 11AUG2019 20:44:34  41.2S  172.8E mb=4.7  EMSC   SOUTH ISLAND OF NEW ZEALAND  

O: 11AUG2019 20:44:36  41.2S  172.9E ML=5.2  GEONET Felt with moderate intensity

P:  6AUG2019 117927    42.0S  172.0E 3.0-4.8 BAAAA  So. Island, N.Z.           

P: 11AUG2019 117927    43.0S  171.0E 3.0-4.8 ABBAA  So. Island, N.Z.           

 

GEONET reported this earthquake was felt with moderate intensity in northern South Island. 2100 people reported feeling this event;  1135 with weak intensity; 884 with light shaking; 76 moderate; 4 strong; 1 with severe and 0 with extreme shaking.

 

 

JAPAN AND KURIL ISLANDS

 

O: 11AUG2019 09:07:42  48.0N  155.1E mb=4.4  EMSC   KURIL ISLANDS                

P:  9AUG2019 117851    49.0N  153.0E 3.5-5.3 AABAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 11AUG2019 18:35:59  32.2N  115.3W Ml=2.5  EMSC   BAJA CALIFORNIA, MEXICO      

P: 11AUG2019 117803    32.4N  115.8W 2.5-4.4 AAAAA  So. California             

 

O: 11AUG2019 18:01:38  35.7N  117.5W ML=3.2  EMSC   SOUTHERN CALIFORNIA          

O: 11AUG2019 14:43:37  35.9N  117.7W Ml=2.6  EMSC   CENTRAL CALIFORNIA           

P: 11AUG2019 117808    35.7N  118.1W 2.5-4.5 AAAAA  So. California             

 

O: 11AUG2019 21:22:09  36.1N  120.2W Md=2.1  EMSC   CENTRAL CALIFORNIA           

P: 10AUG2019 117776    36.1N  120.1W 2.5-4.3 AAAAA  Central California         

 

O: 12AUG2019 03:46:41  36.2N  114.9W ml=2.0  EMSC   NEVADA                       

P:  7AUG2019 117774    38.7N  114.5W 2.5-4.3 BBAAA  California/Nevada area     

 

O: 11AUG2019 12:57:13  36.5N  120.4W Md=2.9  EMSC   CENTRAL CALIFORNIA           

P: 10AUG2019 117776    36.1N  120.1W 2.5-4.3 AAAAA  Central California         

 

O: 11AUG2019 10:39:21  36.5N  121.0W Md=2.3  EMSC   CENTRAL CALIFORNIA           

O: 11AUG2019 08:24:09  36.6N  121.2W Md=2.8  EMSC   CENTRAL CALIFORNIA           

O: 11AUG2019 13:46:30  36.6N  121.2W Md=3.0  EMSC   CENTRAL CALIFORNIA           

P:  9AUG2019 117799    35.7N  121.2W 2.5-4.3 AAAAA  Off So. California         

 

NEIC reported these earthquake of M 3.0 and 2.8 in Central California were felt with intensity II-III in the area(s) of Salinas, California.

 

O: 11AUG2019 08:20:54  37.6N  118.8W MD=2.3  EMSC   CENTRAL CALIFORNIA            

P: 10AUG2019 117773    37.4N  118.6W 2.5-4.3 AAAAA  California/Nevada area     

 

O: 12AUG2019 00:42:04  39.0N  122.6W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P:  8AUG2019 117779    38.8N  122.8W 2.5-4.3 BAAAA  Central California         

 

O: 11AUG2019 06:32:07  39.7N  122.6W Md=2.2  EMSC   NORTHERN CALIFORNIA          

O: 11AUG2019 05:55:48  40.1N  122.3W Md=2.5  EMSC   NORTHERN CALIFORNIA          

O: 11AUG2019 11:30:21  40.7N  121.5W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P:  8AUG2019 117840    40.6N  122.4W 2.5-4.3 BAAAA  Northern California        

 

ALASKA

 

O: 11AUG2019 10:29:06  51.9N  173.1W mb=3.6  EMSC   ANDREANOF ISLANDS, ALEUTIAN IS

P:  4AUG2019 117859    52.3N  174.6W 3.5-4.8 CAAAA  Andreanoff Isls, Aleutians 

 

O: 11AUG2019 08:19:59  52.0N  170.9W mb=3.6  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  6AUG2019 117859    52.4N  170.7W 3.5-4.9 BAAAA  Andreanoff Isls, Aleutians 

 

O: 12AUG2019 05:37:40  58.2N  137.5W ML=2.9  EMSC   SOUTHEASTERN ALASKA          

P:  9AUG2019 117861    58.3N  133.5W 3.0-4.8 BABAA  British Colombia           

P:  9AUG2019 117875    60.0N  139.0W 3.2-4.8 BBAAA  Central Alaska             

 

O: 11AUG2019 11:09:09  69.2N  144.7W ML=3.5  EMSC   NORTHERN ALASKA              

O: 12AUG2019 06:45:07  69.2N  146.7W ml=3.4  EMSC   NORTHERN ALASKA              

P:  7AUG2019 117883    69.0N  144.0W 3.0-4.5 AAAAA  Northern Alaska            

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 11AUG2019 16:52:21  47.6N  121.8W Md=2.2  EMSC   WASHINGTON                    

P: 11AUG2019 117854    49.0N  123.0W 2.0-3.8 ABAAA  Washington state, U.S.     

 

O: 11AUG2019 16:44:29  49.3N  119.7W ML=2.6  EMSC   BRITISH COLUMBIA, CANADA     

 

NEIC reported this earthquake of M 2.6 in British Columbia, Canada  was felt with intensity II-III in the area(s) of British Columbia, Canada Oliver, Penticton, Summerland, and in Oroville, Washington.

 

ROCKY MOUNTAINS REGION

 

O: 11AUG2019 21:55:55  31.7N  104.4W ML=2.8  EMSC   WESTERN TEXAS                

P: 11AUG2019 117802    31.4N  103.8W 2.0-3.9 AAAAA  SW U.S.A                   

 

O: 11AUG2019 08:34:14  45.9N  111.4W Ml=2.0  EMSC   WESTERN MONTANA              

P: 11AUG2019 117835    45.7N  112.1W 2.0-3.9 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O: 11AUG2019 15:14:40  35.0N   85.5W Md=2.4  EMSC   TENNESSEE                    

P: 11AUG2019 117811    33.0N   82.0W 2.0-3.9 ABBAA  Southeast U.S.             

 

O: 12AUG2019 01:26:45  35.1N   95.3W mb=3.2  EMSC   OKLAHOMA                     

O: 11AUG2019 15:30:38  36.3N   97.5W mb=2.5  EMSC   OKLAHOMA                     

P:  9AUG2019 117813    36.0N   97.0W 2.0-3.8 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.6 in Oklahoma  was felt with intensity IV in the area(s) of Oklahoma at Kinta and Quinton.

 

O: 12AUG2019 04:01:44  37.0N   99.4W mb=2.8  EMSC   OKLAHOMA                     

O: 11AUG2019 07:26:20  38.9N   99.2W mb=3.0  EMSC   KANSAS                       

P:  8AUG2019 117814    39.0N   99.0W 2.0-3.9 BAAAA  Southern Plains             

 

NEIC reported this earthquake of M 3.0 in Kansas was felt with intensity IV in the area(s) of Hays, Kansas.

 

HAWAII

 

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

 

ANATOLIAN ZONE CONTINUES ACTIVE

 

EARTHQUAKE SUMMARY FOR AUGUST 10, 2019

 

Seismic activation of the Anatolian Fault Zone in Greece, Turkey and Azerbaijan continued today with an M 5.0 in Crete, Greece and a series in Azerbaijan of M 4.9, 4.4 and 4.1 among others of lesser magnitude. An M 5.0 hit within about 150 km of the event in Crete on July 31, 2019 but the last in this area of greater magnitude was an M 5.3 on July 31, 2017. Forecast 117784 had expected today's area would be active around August 6. This epicenter in Crete and that in Azerbaijan is at 102 degrees from the M 7.1 in Southern California of July 6 and was probably promoted by energy from that source.

 

O: 11AUG2019 07:02:50  34.3N   25.0E mb=5.0  EMSC   CRETE, GREECE                

P:  6AUG2019 117784    34.0N   27.0E 3.0-4.3 BABAA  Crete                      

 

The activity in Azerbaijan included events of M 4.9, 4.4 and 4.1 and was the strongest within about 150 km of those epicenters since an M 5.1 on February 5, 2019 and prior to that an M 5.3 on June 5, 2018.  Forecast 117830 had expected activity southeast of this around August 11.

 

NEIC reported this earthquake of M 4.9 in Azerbaijan  was felt with intensity II-III in the area(s) of Azerbaijan at Zaqatala and in Georgia at Tblisi and Zahesi Mtskheta-Mtianeti. This epicenter in Azebaijan is at 101-102 degrees from the M 7.1 in Southern California of July 6 and was probably promoted by energy from that source.

 

O: 10AUG2019 11:22:48  41.6N   46.6E mb=4.1  EMSC   AZERBAIJAN                    

O: 11AUG2019 03:29:20  41.6N   46.6E mb=4.4  EMSC   AZERBAIJAN                   

O: 10AUG2019 07:35:10  41.8N   46.8E mb=4.9  EMSC   AZERBAIJAN                   

P: 11AUG2019 117830    40.0N   50.0E 4.0-5.4 ABCAA  Kazakhstan                 

 

The strongest activity of the day occurred in the region of Indonesia and Sumatra. The largest of these was an M 5.4 in the Banda Sea; but earthquakes of M 5.3 and 5.3 also hit southwest of Sumatra, Indonesia and with M 5.2 in Southern Sumatra, Indonesia. Enhanced seismicity in this region had been expected at this time in this summary as:

 

"The geomagnetic field saw minor to major storm conditions today. The AP level was 24.  High latitude geomagnetic field saw active conditions  with AP at 12.  This is the greatest disturbance in the geomagnetic field since AP reached 36 on May 14, 2019.  The last storm of significantly larger AP occurred nearly a year ago on August 26, 2008 when AP reached 76 and high latitude AP was 90. Seismic increases are likely at high latitudes and within about 15 degrees of the geomagnetic equator beginning August 6 through August 11 due to triggering effects from this storm. The most likely timing of a strong to major event is August 10-12, the most likely regions - Indonesia, the Philippines the Southwest Pacific and Alaska." (August 6-7, 2019)

 

NEIC reported this earthquake of M 5.2 in Southern Sumatra  was felt with intensity II-III in the area(s) of Southern Sumatra at Padang Pariaman and Padang, Sumatra, Indonesia.

 

O: 10AUG2019 21:11:09   0.8S   99.4E Mw=5.2  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 10AUG2019 117717     0.0N   99.0E 4.0-5.3 AAAAA  So. Sumatera               

 

O: 11AUG2019 02:11:08   7.2S  102.9E mb=5.3  EMSC   SOUTHWEST OF SUMATRA, INDONESI

O: 11AUG2019 04:39:02   7.2S  103.0E mb=5.3  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P:  8AUG2019 117731     6.0S  102.0E 4.0-5.5 BBAAA  So. of Sumatera            

 

O: 10AUG2019 12:01:34   5.6S  129.7E Mw=5.4  EMSC   BANDA SEA                    

P: 11AUG2019 117718     6.0S  129.0E 4.0-5.3 AAAAA  Banda Sea                  

 

The strongest earthquake in the U.S. or Canada today was an M 4.9 in the Fox Islands, Aleutians, Alaska. It was not reported felt in this remote area. The last earthquake within about  150 km of this epicenter with M>=4.9 occurred as an < 5.4 on July 9, 2019 and prior to that an M 4.9 on March 4, 2018. Forecast 117863 had expected activity in this area was likely around August 9.

 

 

O: 10AUG2019 21:38:54  52.3N  168.3W mb=4.9  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  9AUG2019 117863    51.7N  166.4W 3.5-4.8 AAAAA  Fox Islands, Aleutians     

 

Earthquakes of M 4.5 and 3.7 occurred in the northern Gulf of California and Baja California today. This is an area which is often associated with strong geomagnetic storms and the storm of August 5 may have helped bring these events up to date. The M 4.5 is the strongest within about 100 km of this epicenter since an M 5.2 on April 6, 2019 and prior to that an M 4.5 on July 28, 2018. A swarm including an M 5.5 hit the region in March 28, 2016.  Forecast 117801 had expected today's activity in this region was likely around August 11.

 

O: 10AUG2019 18:53:06  30.8N  115.3W ML=3.7  EMSC   BAJA CALIFORNIA, MEXICO      

O: 10AUG2019 08:28:46  31.2N  114.2W ML=4.5  EMSC   GULF OF CALIFORNIA           

P: 11AUG2019 117801    30.2N  114.1W 2.0-3.8 AAAAA  SW U.S.A                   

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: 11AUG2019 02:13:26  30.4N   94.8E mb=5.1  EMSC   EASTERN XIZANG               

P:  8AUG2019 117821    36.0N   94.0E 3.8-5.1 BCAAA  Xizang                     

 

O: 10AUG2019 16:59:16  30.7N   57.4E ML=4.0  EMSC   EASTERN IRAN                 

P:  9AUG2019 117810    31.0N   57.0E 3.8-5.1 AAAAA  So. Iran                   

 

O: 10AUG2019 23:17:17  52.1N  160.1E mb=4.9  EMSC   OFF EAST COAST OF KAMCHATKA  

P:  4AUG2019 117864    52.0N  158.0E 4.0-5.7 CABAA  Kamchatka                  

 

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

 

INDONESIA AND PHILIPPINES

 

O: 10AUG2019 12:59:14   0.3N  120.1E mb=4.6  EMSC   MINAHASA, SULAWESI, INDONESIA

P:  5AUG2019 117733     1.0S  120.0E 4.0-5.3 BBAAA  Sulawesi area              

 

O: 10AUG2019 21:11:09   0.8S   99.4E Mw=5.2  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 10AUG2019 117717     0.0N   99.0E 4.0-5.3 AAAAA  So. Sumatera               

 

O: 10AUG2019 14:43:07   0.8S  127.6E ML=4.1  EMSC   HALMAHERA, INDONESIA         

P:  9AUG2019 117722     3.0S  126.0E 4.0-5.3 ACBAA  Ceram area                 

 

O: 10AUG2019 22:37:43   4.6S  145.4E mb=4.6  EMSC   NEAR N COAST OF NEW GUINEA, PN

P:  7AUG2019 117728     4.0S  143.0E 4.0-5.3 BABAA  Papua New Guinea           

 

O: 10AUG2019 12:01:34   5.6S  129.7E Mw=5.4  EMSC   BANDA SEA                    

P: 11AUG2019 117718     6.0S  129.0E 4.0-5.3 AAAAA  Banda Sea                  

 

O: 10AUG2019 21:58:52   6.0S  146.7E mb=5.0  EMSC   EASTERN NEW GUINEA REG., P.N.G

P:  7AUG2019 117724     7.0S  147.0E 4.0-5.3 BAAAA  New Ireland                

 

O: 10AUG2019 12:26:02   6.5S  130.1E mb=4.5  EMSC   BANDA SEA                    

P: 11AUG2019 117718     6.0S  129.0E 4.0-5.3 AAAAA  Banda Sea                   

 

O: 11AUG2019 02:11:08   7.2S  102.9E mb=5.3  EMSC   SOUTHWEST OF SUMATRA, INDONESI

O: 11AUG2019 04:39:02   7.2S  103.0E mb=5.3  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P:  8AUG2019 117731     6.0S  102.0E 4.0-5.5 BBAAA  So. of Sumatera            

 

O: 11AUG2019 04:52:40   9.3N  125.9E mb=4.9  EMSC   MINDANAO, PHILIPPINES        

P:  9AUG2019 117711     8.0N  125.0E 4.0-5.3 ABAAA  Central Philippines        

 

O: 10AUG2019 13:26:44   8.6S  110.1E mb=4.6  EMSC   JAVA, INDONESIA              

O: 10AUG2019 21:59:10   8.7S  108.7E ML=4.1  EMSC   JAVA, INDONESIA              

P:  4AUG2019 117730     9.0S  108.0E 4.0-5.3 CAAAA  So. of Java                

 

O: 11AUG2019 01:55:36  18.1S  178.1W mb=4.5  EMSC   FIJI REGION                  

P:  6AUG2019 117901    18.0S  180.0W 4.0-5.3 BABAA  Tonga Islands              

 

 

CENTRAL AND SOUTH AMERICA

 

O: 10AUG2019 17:16     31.8S   71.4W mb=4.7  GUC    Coquimbo at Illapel; IV in Can

P:  5AUG2019 117916    31.0S   69.0W 4.0-5.4 BABAA  Central Chile              

 

CSN reported this earthquake was felt with intensity V in  Coquimbo at Illapel; IV in Canela,k Salamanca and III in Comb arbala, Los Vilos, Mone Patria, and Punitaqui and III in Zapallar, Valparaiso Chile.

 

O: 10AUG2019 23:36     28.0S   66.8W mb=4.8  GUC    Atacama at Copiapo and Tierra

P:  8AUG2019 117906    28.0S   68.0W 4.0-5.3 AAAAA  Argentina                  

 

CSN reported this earthquake was felt with intensity III in  Atacama at Copiapo and Tierra Amarilla, Chile.

 

O: 10AUG2019 20:43:12  17.4N   95.7W ML=4.0  EMSC   OAXACA, MEXICO               

P: 31JUL2019 117535    18.0N   97.0W 3.5-5.0 DAAAA  Oaxaca, Mexico             

 

O: 11AUG2019 04:36:37   8.8S   74.5W mb=4.5  EMSC   CENTRAL PERU                 

O: 10AUG2019 16:36:00   8.8S   74.7W ML=4.7  EMSC   CENTRAL PERU                 

O: 10AUG2019 13:32:00   5.7S   78.8W ML=4.3  EMSC   NORTHERN PERU                

P: 11AUG2019 117726     8.0S   78.0W 4.0-5.3 ACAAA  No. Peru                   

 

NEIC reported this earthquake of M 4.5 in  Central Peru was felt with intensity II-III in the area(s) of Central Peru at Huaraz, Ancash and Santa Rosa, Lambayeque.

 

O: 10AUG2019 10:06:44  15.9N   95.2W ML=4.1  EMSC   OFFSHORE OAXACA, MEXICO      

O: 10AUG2019 18:45:44  16.9N   94.4W ML=4.3  EMSC   OAXACA, MEXICO               

P:  8AUG2019 117740    14.0N   92.0W 3.5-5.1 ACBAA  Guatemala                  

 

O: 10AUG2019 17:59:20  16.9N  100.6W ML=4.1  EMSC   OFFSHORE GUERRERO, MEXICO    

P:  6AUG2019 117749    17.0N  100.0W 3.5-5.1 BAAAA  Oaxaca, Mexico             

 

O: 10AUG2019 20:43:12  17.4N   95.7W ML=4.0  EMSC   OAXACA, MEXICO               

P: 31JUL2019 117535    18.0N   97.0W 3.5-5.0 DAAAA  Oaxaca, Mexico             

 

O: 10AUG2019 17:14:10  19.1N   70.3W ML=3.0  EMSC   DOMINICAN REPUBLIC           

O: 10AUG2019 16:05:02  19.4N   68.0W Md=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P:  8AUG2019 117752    18.0N   69.0W 3.4-4.9 ABAAA  Puerto Rico                

 

O: 10AUG2019 20:43:52  19.9N   69.8W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

O: 11AUG2019 02:04:49  19.9N   70.8W ML=3.3  EMSC   DOMINICAN REPUBLIC REGION    

P:  5AUG2019 117752    19.0N   71.0W 3.4-4.8 CAAAA  Puerto Rico                

 

O: 10AUG2019 23:36:42  28.1S   66.8W mb=4.8  EMSC   CATAMARCA, ARGENTINA         

O: 10AUG2019 19:06:47  28.1S   67.4W mb=4.4  EMSC   CATAMARCA, ARGENTINA         

P:  8AUG2019 117906    28.0S   68.0W 4.0-5.3 AAAAA  Argentina                  

 

O: 10AUG2019 17:16:04  31.7S   71.6W mb=4.8  EMSC   OFFSHORE COQUIMBO, CHILE     

P:  5AUG2019 117916    31.0S   69.0W 4.0-5.4 BABAA  Central Chile              

 

 

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

 

AFRICA AND EUROPE

 

O: 10AUG2019 16:58:27  27.0S   26.5E mb=4.7  EMSC   SOUTH AFRICA                  

P: 11AUG2019 117911    22.0S   33.0E 4.0-5.3 ACCAA  So. Indian Ocean           

 

O: 11AUG2019 07:02:50  34.3N   25.0E mb=5.0  EMSC   CRETE, GREECE                

P:  6AUG2019 117784    34.0N   27.0E 3.0-4.3 BABAA  Crete                       

 

O: 10AUG2019 11:22:48  41.6N   46.6E mb=4.1  EMSC   AZERBAIJAN                   

O: 11AUG2019 03:29:20  41.6N   46.6E mb=4.4  EMSC   AZERBAIJAN                   

O: 10AUG2019 07:35:10  41.8N   46.8E mb=4.9  EMSC   AZERBAIJAN                   

P: 11AUG2019 117830    40.0N   50.0E 4.0-5.4 ABCAA  Kazakhstan                 

 

SOUTHWEST PACIFIC

 

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

 

OCEAN RIDGES

 

O: 11AUG2019 03:10:32   0.4S   91.6W ML=3.8  EMSC   GALAPAGOS ISLANDS, ECUADOR   

 

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: 11AUG2019 03:17:45  47.9N  156.2E mb=4.4  EMSC   EAST OF KURIL ISLANDS        

P:  9AUG2019 117851    49.0N  153.0E 3.5-5.3 ABBAA  So. Kurils                 

 

O: 10AUG2019 08:39:23  37.6N  134.7E mb=4.0  EMSC   SEA OF JAPAN                 

P:  7AUG2019 117782    34.0N  136.0E 3.5-4.8 BCAAA  Central/So. Honshu Japan   

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 10AUG2019 18:53:06  30.8N  115.3W ML=3.7  EMSC   BAJA CALIFORNIA, MEXICO      

O: 10AUG2019 08:28:46  31.2N  114.2W ML=4.5  EMSC   GULF OF CALIFORNIA           

P: 11AUG2019 117801    30.2N  114.1W 2.0-3.8 AAAAA  SW U.S.A                   

 

O: 11AUG2019 01:21:08  35.6N  117.5W Ml=2.9  EMSC   SOUTHERN CALIFORNIA           

P: 11AUG2019 117808    35.7N  118.1W 2.5-4.5 AAAAA  So. California             

 

O: 10AUG2019 09:44:25  35.6N  120.9W Md=2.5  EMSC   CENTRAL CALIFORNIA           

P:  9AUG2019 117799    35.7N  121.2W 2.5-4.3 AAAAA  Off So. 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 Templeton.

 

O: 10AUG2019 14:02:19  38.9N  123.2W Md=2.5  EMSC   NORTHERN CALIFORNIA          

P:  8AUG2019 117779    38.8N  122.8W 2.5-4.3 AAAAA  Central California         

 

O: 11AUG2019 06:32:07  39.7N  122.6W Md=2.2  EMSC   NORTHERN CALIFORNIA          

O: 11AUG2019 05:55:48  40.1N  122.3W Md=2.5  EMSC   NORTHERN CALIFORNIA          

P:  8AUG2019 117840    40.6N  122.4W 2.5-4.3 BAAAA  Northern California        

 

NEIC reported this earthquake of M 2.5 in Northern California was felt with intensity II-III in the area(s) of Hopland and Yorkville, California.

 

O: 11AUG2019 01:41:31  40.3N  125.3W ML=3.3  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 10AUG2019 117841    40.9N  126.3W 2.5-4.3 AAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.3  offshore Northern California  was felt with intensity II-III in the area(s)  offshore Northern California at Eureka.

 

O: 10AUG2019 08:58:52  40.7N  121.5W Md=2.5  EMSC   NORTHERN CALIFORNIA          

O: 10AUG2019 13:26:08  40.7N  121.5W Md=2.5  EMSC   NORTHERN CALIFORNIA          

O: 10AUG2019 09:06:29  40.7N  121.5W Md=3.1  EMSC   NORTHERN CALIFORNIA          

P:  9AUG2019 117845    42.2N  120.3W 2.0-3.9 ABAAA  Oregon state, U.S.         

 

ALASKA

 

O: 10AUG2019 21:38:54  52.3N  168.3W mb=4.9  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  9AUG2019 117863    51.7N  166.4W 3.5-4.8 AAAAA  Fox Islands, Aleutians     

 

O: 10AUG2019 12:28:25  56.2N  149.4W ML=3.3  EMSC   GULF OF ALASKA               

 

O: 11AUG2019 05:11:22  58.0N  137.7W ML=2.9  EMSC   OFF COAST OF SOUTHEASTERN ALAS

P:  9AUG2019 117875    60.0N  139.0W 3.2-4.8 ABAAA  Central Alaska             

 

O: 11AUG2019 05:52:06  58.9N  157.4W ML=3.3  EMSC   ALASKA PENINSULA             

P:  6AUG2019 117878    60.3N  153.0W 3.2-4.8 BBCAA  Central Alaska             

 

NEIC reported this earthquake of M 3.3 in the Alaska Peninsula was felt with intensity II-III in the area(s) of South Naknek,  Alaska Peninsula.

 

O: 11AUG2019 01:45:00  69.6N  145.0W ml=3.6  EMSC   NORTHERN ALASKA              

P:  7AUG2019 117883    69.0N  144.0W 3.0-4.5 BAAAA  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

 

No earthquakes of M>=2 were located in the Rocky Mountain region today.

 

EASTERN U.S./CANADA

 

O: 11AUG2019 00:08:07  36.5N   99.0W ML=2.2  EMSC   OKLAHOMA                      

P:  8AUG2019 117814    39.0N   99.0W 2.0-3.9 BCAAA  Southern Plains            

 

HAWAII

 

O: 10AUG2019 23:19:13  19.3N  155.2W ML=3.5  EMSC   ISLAND OF HAWAII, HAWAII     

P: 11AUG2019 117741    19.4N  155.3W 3.0-4.3 AAAAA  Hawaii                      

 

NEIC reported this earthquake of M 3.5 in  Hawaii was felt with intensity II-III in the area(s) of Hawaii at Volcano, Pahoa, Mountain View, Kurtistown, Hilo, Keaau, Papaikou, Naalehu, Pepeekep and Hakalau.

 

MODERATE QUAKES IN KAMCHATKA, RUSSIA

 

EARTHQUAKE SUMMARY FOR AUGUST 9, 2019

 

The strongest earthquake in the world today was an M 5.5 in the region of Kamchatka, Russia. It was not reported felt in this remote area. It joined three other moderate sized regional events in the Kamchatka area including an M 5.0. This is unusual for the region, but not uncommon. The last earthquake within about 200 of this epicenter in Kamchatka with M>=5.5 occurred November 14, 2018 with M 6.1 and before that on March 29, 2017 with M 6.6. Forecast 117862 had expected today's M 5.5 was likely in Kamchatka in early August.

 

O:  9AUG2019 21:26:58  55.9N  161.8E Mw=5.5  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  3AUG2019 117862    52.0N  161.0E 4.0-5.3 CCAAA  E. of Kamchatka             

 

O: 10AUG2019 05:12:30  53.6N  162.2E mb=4.1  EMSC   OFF EAST COAST OF KAMCHATKA  

P:  3AUG2019 117862    52.0N  161.0E 4.0-5.3 CBAAA  E. of Kamchatka            

 

O:  9AUG2019 22:35:50  54.9N  160.7E mb=5.0  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  4AUG2019 117864    52.0N  158.0E 4.0-5.7 BCBAA  Kamchatka                  

 

O: 10AUG2019 00:33:50  55.8N  162.2E mb=4.0  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 31JUL2019 117646    56.0N  166.0E 4.0-5.5 CACAA  Komandorsky Isl            

 

The second strongest felt earthquake in the world today was an M 5.2 in northern Qinghai, China. The last earthquake within about 200 km of this epicenter in China with M>=5.2 was an M 5.2 on August 13, 2016; the last such event of larger magnitude was an M 5.9 within about 25 km of today's epicenter on January 20, 2016. There were no such events in the area between 2004 and 2016.  Forecast 117809 had expected today's event within about 50 km was likely around August 10. This epicenter is in the antipodal area of the M 6.8 in Central Chile of August 1 and may have been promoted by focused energy from that event.

 

O:  9AUG2019 07:23:51  37.8N  101.7E mb=5.2  EMSC   NORTHERN QINGHAI, CHINA      

P: 10AUG2019 117809    38.0N  101.0E 3.5-4.8 AAAAA  So. China                   

 

About a day after the event in China, an M 5.4 occurred in Tajikistan directly east of the Chinese event. This is probably related to the M 5.8 in Afghanistan two days ago of August 8. The last such event other than that with M>=5.4 within about 200 km of today's epicenter was an M 5.6 on February 2, 2019. Forecast 117785 had expected today's event in this area was likely around August 9.

 

NEIC reported this earthquake of M 5.4 in Tajikistan  was felt with intensity V in Mingaora, North-west Pakistan and II-III in the area(s) of Tajikistan at  Dushanbe and in Gujranwala, Punjab, Pakistan.

 

O: 10AUG2019 06:43:11  37.2N   71.6E mb=5.4  EMSC   TAJIKISTAN                   

P:  9AUG2019 117785    38.0N   73.0E 3.8-5.1 AAAAA  Hindu Kush/Pakistan         

 

The strongest earthquake in the U.S. or Canada today was an M 4.2 in the Rat Islands, Aleutians. It was not reported felt in this remote area. The last earthquake of M>=4.2 in the active Rat Islands within about 200 km of this epicenter occurred as an M 4.5 on August 5, 2019.  Forecast 117870 had expected today's event was likely around August 8.

 

Elevated seismicity along the Anatolian Fault Zone in Greece and Turkey also continued today. An M 4.5 occurred in Southern Greece in this current activation. NEIC reported this earthquake of M 4.5 in  Southern Greece was felt with intensity II-III in the area(s) of Southern Greece at Kalamakion, and Katastrion, Zakinthos and Meligalas, Messinia.  This follows an M 5.8 in western Turkey yesterday and may have been promoted from that event. The last earthquake in Greece within about 100 km of this epicenter of larger magnitude was an M 4.7 on May 21, 2019. Forecast 117792 had expected today's event was likely within about 25 km of this epicenter around August 11.

 

O:  9AUG2019 21:39:41  37.2N   21.2E Mw=4.5  EMSC   SOUTHERN GREECE              

P: 11AUG2019 117792    37.0N   21.0E 3.0-4.3 AAAAA  No. Greece                 

 

O:  9AUG2019 19:45:30  51.9N  179.9E mb=4.2  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  8AUG2019 117870    51.0N  178.0E 4.0-5.5 AABAA  Rat Islands                

 

An M 4.1 also occurred today off the coast of Oregon.  NEIC reported this earthquake of M 4.1 off the Oregon coast may have been felt with intensity II in Newberg, Oregon. The M 3.3 off the coast of Oregon  may have been felt with intensity II-III in the area(s) of on the coast of Oregon at Rockaway Beach and Clackamas. This was the largest event in the U.S. outside Alaska today. The last activity off the Coast of Oregon with M>=4 occurred on July 3, 2019 (M 4.1) in a regional activation which led to the M 7.1 in Central California on July 6. Forecast 117843 had expected today's event was likely around August 6.

 

O:  9AUG2019 16:39:43  43.8N  129.6W mb=4.1  EMSC   OFF COAST OF OREGON          

P:  6AUG2019 117843    44.5N  129.8W 3.0-4.4 BAAAA  Off Coast of Oregon        

 

The most unusual earthquake in the U.S. today was an M 2.8 in Mississippi where it was widely felt. NEIC reported this earthquake of M 2.8 in  Mississippi was felt with intensity II-III in the area(s) of Mississippi Madison, Brandon, Canton, Ridgeland, Flora, Jackson, Vicksburg, Ellisville, and Natchez. The only earthquake in Mississippi of M>=2 in the past year was an M 3.7 on January 8, 2019. Forecast 117812 had expected today's event was possible within about 200 km around August 8.

 

O:  9AUG2019 07:33:05  32.5N   90.0W mb=2.8  EMSC   MISSISSIPPI                  

P:  8AUG2019 117812    34.0N   92.0W 2.0-3.8 ABBAA  Southeast U.S.             

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:  9AUG2019 12:40:32  27.4N   84.5E ML=4.6  EMSC   NEPAL-INDIA BORDER REGION    

P: 31JUL2019 117603    30.0N   80.0E 3.8-5.1 CCCAA  Xizang                     

 

O: 10AUG2019 06:43:11  37.2N   71.6E mb=5.4  EMSC   TAJIKISTAN                   

P:  9AUG2019 117785    38.0N   73.0E 3.8-5.1 AAAAA  Hindu Kush/Pakistan        

 

O:  9AUG2019 07:23:51  37.8N  101.7E mb=5.2  EMSC   NORTHERN QINGHAI, CHINA      

P: 10AUG2019 117809    38.0N  101.0E 3.5-4.8 AAAAA  So. China                  

 

O:  9AUG2019 13:05:32  41.3N   83.3E mb=4.5  EMSC   SOUTHERN XINJIANG, CHINA     

 

O:  9AUG2019 18:22:58  51.8N   93.8E mb=4.0  EMSC   SOUTHWESTERN SIBERIA, RUSSIA 

P: 11AUG2019 117871    51.0N   98.0E 3.0-4.3 AACAA  So. Siberia                

 

O: 10AUG2019 05:12:30  53.6N  162.2E mb=4.1  EMSC   OFF EAST COAST OF KAMCHATKA  

P:  3AUG2019 117862    52.0N  161.0E 4.0-5.3 CBAAA  E. of Kamchatka            

 

O:  9AUG2019 22:35:50  54.9N  160.7E mb=5.0  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  4AUG2019 117864    52.0N  158.0E 4.0-5.7 BCBAA  Kamchatka                  

 

O: 10AUG2019 00:33:50  55.8N  162.2E mb=4.0  EMSC   NEAR EAST COAST OF KAMCHATKA 

P: 31JUL2019 117646    56.0N  166.0E 4.0-5.5 CACAA  Komandorsky Isl            

 

O:  9AUG2019 21:26:58  55.9N  161.8E Mw=5.5  EMSC   NEAR EAST COAST OF KAMCHATKA 

P:  3AUG2019 117862    52.0N  161.0E 4.0-5.3 CCAAA  E. of Kamchatka            

 

INDONESIA AND PHILIPPINES

 

O:  9AUG2019 07:30:25   1.6N  124.6E ML=4.0  EMSC   MINAHASA, SULAWESI, INDONESIA

P: 11AUG2019 117715     1.0N  126.0E 4.0-5.3 AABAA  Mindanao, Philippines      

 

O:  9AUG2019 15:57:02   6.1N  126.9E ML=4.5  EMSC   MINDANAO, PHILIPPINES        

P:  9AUG2019 117711     8.0N  125.0E 4.0-5.3 ABBAA  Central Philippines        

 

O:  9AUG2019 18:20:58   7.5S  118.6E ML=4.3  EMSC   FLORES SEA                   

O:  9AUG2019 08:10:31   9.8S  119.4E ML=4.2  EMSC   SUMBA REGION, INDONESIA      

P:  6AUG2019 117729     9.0S  114.0E 4.0-5.3 BACAA  So. of Bali                

 

O:  9AUG2019 11:45:22  21.8N  145.0E mb=4.7  EMSC   MARIANA ISLANDS REGION       

P: 11AUG2019 117768    23.0N  143.0E 4.0-5.3 ABBAA  Volcano Islands            

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 10AUG2019 01:31:30   9.7N   86.3W ML=4.0  EMSC   OFF COAST OF COSTA RICA      

O:  9AUG2019 20:48:30  10.2N   86.5W ML=4.4  EMSC   OFF COAST OF COSTA RICA      

P:  5AUG2019 117713     9.0N   84.0W 3.5-4.9 BBBAA  Costa Rica                 

 

O: 10AUG2019 02:11:26  12.8N   88.6W ML=4.2  EMSC   OFFSHORE EL SALVADOR         

P:  7AUG2019 117746    13.0N   88.0W 3.5-5.0 BAAAA  Nicaragua                  

 

O:  9AUG2019 17:04:01  13.2N   89.3W mb=4.5  EMSC   OFFSHORE EL SALVADOR         

P: 11AUG2019 117740    13.0N   90.0W 3.5-5.0 AAAAA  Guatemala                  

 

NEIC reported this earthquake of M 4.5 in El Salvador  was felt with intensity II-III in the area(s) of El Salvador at Antiguo Cuscatlan, La Libertad and San Salvador.

 

O:  9AUG2019 22:27:53  16.1S   70.4W Mw=4.7  EMSC   SOUTHERN PERU                

P: 11AUG2019 117899    18.0S   71.0W 4.0-5.3 ABAAA  So. Peru/Bolivia           

 

O:  9AUG2019 14:21:43  19.0N   65.0W mb=4.3  EMSC   VIRGIN ISLANDS REGION        

P:  6AUG2019 117751    19.0N   66.0W 3.4-4.8 BAAAA  Puerto Rico                

 

NEIC reported this earthquake of M 4.3 in the U.S. Virgin Islands was felt with intensity II-III in the area(s) of Manati, Puerto Rico.

 

O:  9AUG2019 16:53:52  23.3S   63.7W ML=4.3  EMSC   SALTA, ARGENTINA             

P:  3AUG2019 117905    24.0S   64.0W 4.0-5.4 CAAAA  Argentina                   

 

O:  9AUG2019 18:33:46  24.3S   67.0W ML=4.2  EMSC   SALTA, ARGENTINA             

P:  5AUG2019 117905    24.0S   67.0W 4.0-5.4 BAAAA  Argentina                  

 

O:  9AUG2019 22:45:11  31.3S   67.6W ML=4.1  EMSC   SAN JUAN, ARGENTINA           

P:  5AUG2019 117916    31.0S   69.0W 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:  9AUG2019 21:39:41  37.2N   21.2E Mw=4.5  EMSC   SOUTHERN GREECE              

P: 11AUG2019 117792    37.0N   21.0E 3.0-4.3 AAAAA  No. Greece                 

 

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

 

SOUTHWEST PACIFIC

 

O:  9AUG2019 13:09:46   4.3S  152.9E mb=5.3  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 10AUG2019 117724     6.0S  154.0E 4.0-5.3 ABAAA  New Britain                

 

NEIC reported this earthquake of M 5.3 in  Papua New Guinea was felt with intensity II-III in the area(s) of Papua New Guinea at Kokopo, New Britain.

 

O:  9AUG2019 17:45:58  21.4S  174.2W mb=5.4  EMSC   TONGA                        

P: 11AUG2019 117901    19.0S  174.0W 4.0-5.3 ACAAA  Tonga Islands              

 

O:  9AUG2019 09:37:16  25.4S  177.2W mb=4.8  EMSC   SOUTH OF FIJI ISLANDS         

P:  9AUG2019 117913    27.0S  176.0W 4.0-5.3 ACAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 10AUG2019 03:41:21   7.5N   37.0W mb=5.1  EMSC   CENTRAL MID-ATLANTIC RIDGE   

P:  4AUG2019 117709     5.0N   33.0W 4.0-5.5 CCCAA  Central Mid-Atlantic Ridg  

 

O:  9AUG2019 09:26:02  35.0S  112.0W mb=4.7  EMSC   SOUTHERN EAST PACIFIC RISE   

O:  9AUG2019 11:22:51  35.0S  112.0W mb=4.8  EMSC   SOUTHERN EAST PACIFIC RISE   

 

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:  9AUG2019 17:17:21  26.3N  126.6E mb=4.5  EMSC   RYUKYU ISLANDS, JAPAN        

P:  8AUG2019 117765    26.0N  126.0E 4.0-5.3 AAAAA  Ryukyu Islands             

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  9AUG2019 17:51:35  33.8N  117.7W ML=2.1  EMSC   GREATER LOS ANGELES AREA, CALI

O:  9AUG2019 16:42:20  33.9N  118.8W Ml=2.8  EMSC   CHANNEL ISLANDS REG., CALIFORN

P:  7AUG2019 117807    34.2N  117.5W 2.5-4.3 AABAA  So. California             

 

NEIC reported this earthquake of M 2.8 in the Channel Islands, California was felt with intensity II-III in the area(s) of the Channel Islands, California at Malibu, Santa Monica, Rancho Palos Verdes, and San Diego.

 

O:  9AUG2019 19:07:10  35.6N  117.4W Ml=2.5  EMSC   SOUTHERN CALIFORNIA          

O:  9AUG2019 15:23:04  35.7N  117.5W ML=3.0  EMSC   SOUTHERN CALIFORNIA          

O:  9AUG2019 21:07:18  35.7N  117.5W ML=3.1  EMSC   SOUTHERN CALIFORNIA          

P: 11AUG2019 117808    35.7N  118.1W 2.5-4.5 AAAAA  So. California             

 

O:  9AUG2019 07:15:43  36.1N  120.2W Md=2.4  EMSC   CENTRAL CALIFORNIA            

P: 10AUG2019 117776    36.1N  120.1W 2.5-4.3 AAAAA  Central California         

 

O:  9AUG2019 21:02:49  36.8N  121.6W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P:  8AUG2019 117777    36.2N  121.8W 2.5-4.4 AAAAA  Central California         

 

O:  9AUG2019 09:21:46  37.6N  118.8W Md=2.5  EMSC   CENTRAL CALIFORNIA           

O:  9AUG2019 20:31:53  37.6N  118.9W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P: 10AUG2019 117773    37.4N  118.6W 2.5-4.3 AAAAA  California/Nevada area     

 

O:  9AUG2019 19:50:45  37.9N  118.6W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P:  5AUG2019 117775    38.7N  119.7W 2.5-4.5 BAAAA  California/Nevada area     

 

O: 10AUG2019 03:57:09  38.8N  122.7W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  8AUG2019 117779    38.8N  122.8W 2.5-4.3 AAAAA  Central California         

 

O:  9AUG2019 21:31:46  39.8N  122.7W Md=2.0  EMSC   NORTHERN CALIFORNIA          

O:  9AUG2019 20:12:39  39.8N  122.7W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  8AUG2019 117840    40.6N  122.4W 2.5-4.3 AAAAA  Northern California        

 

O: 10AUG2019 05:29:53  40.3N  124.5W Md=2.2  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P:  7AUG2019 117841    40.3N  124.7W 2.5-4.3 BAAAA  Off Coast of No. Calif     

 

 

ALASKA

 

O:  9AUG2019 19:45:30  51.9N  179.9E mb=4.2  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P:  8AUG2019 117870    51.0N  178.0E 4.0-5.5 AABAA  Rat Islands                

 

O:  9AUG2019 08:52:01  57.0N  149.7W ML=3.4  EMSC   GULF OF ALASKA               

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  9AUG2019 16:39:43  43.8N  129.6W mb=4.1  EMSC   OFF COAST OF OREGON          

P:  6AUG2019 117843    44.5N  129.8W 3.0-4.4 BAAAA  Off Coast of Oregon        

 

O:  9AUG2019 22:14:41  44.0N  128.9W ML=3.3  EMSC   OFF COAST OF OREGON           

P: 10AUG2019 117842    43.9N  128.4W 3.0-4.3 AAAAA  Off Coast of Oregon        

 

O: 10AUG2019 06:08:36  46.2N  120.8W Ml=2.0  EMSC   WASHINGTON                   

 

ROCKY MOUNTAINS REGION

 

O: 10AUG2019 04:16:44  35.2N  107.9W ML=2.8  EMSC   NEW MEXICO                   

P:  1AUG2019 117783    37.1N  104.7W 2.0-3.8 ABCAA  Colorado area              

 

O:  9AUG2019 16:02:27  44.7N  114.1W ML=3.2  EMSC   SOUTHERN IDAHO               

P:  8AUG2019 117835    44.4N  114.1W 2.0-3.9 AAAAA  Montana/Idaho               

 

NEIC reported this earthquake of M 3.2 in  Idaho was felt with intensity II-III in the area(s) of Challis, Idaho.

 

EASTERN U.S./CANADA

 

O: 10AUG2019 01:35:11  35.3N   97.7W ML=2.0  EMSC   OKLAHOMA                     

O:  9AUG2019 16:08:43  35.7N   97.4W mb=2.5  EMSC   OKLAHOMA                     

O: 10AUG2019 05:38:46  36.8N   98.1W mb=2.7  EMSC   OKLAHOMA                     

P:  9AUG2019 117813    36.0N   97.0W 2.0-3.8 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.2 in Oklahoma was felt with intensity II-III in the area(s) of Waynoka, Oklahoma.

The M 2.8 was reported with intensity II-III in Edmond, Oklahoma City and Pryor, Oklahoma.

 

O:  9AUG2019 07:33:05  32.5N   90.0W mb=2.8  EMSC   MISSISSIPPI                   

P:  8AUG2019 117812    34.0N   92.0W 2.0-3.8 ABBAA  Southeast U.S.             

 

O:  9AUG2019 12:04:43  37.8N   90.3W Md=2.0  EMSC   SOUTHEASTERN MISSOURI        

P:  4AUG2019 117791    37.0N   89.0W 2.0-3.8 BAAAA  New Madrid area            

 

O:  8AUG2019 11:17:39  47.5N   70.2W MB=3.0  ECAN La Malbaie, QC. Felt           

P:  6AUG2019 117836    47.3N   70.5W 2.0-3.8 AAAAA  New England                

 

O:  8AUG2019 02:27:09  77.5N  101.7W MB=2.1  ECAN Isachsen, NU                   

 

O:  7AUG2019 23:14:50  74.7N   83.6W MB=2.1  ECAN Dundas Harbour, NU             

 

HAWAII

 

O:  9AUG2019 19:13:51  19.3N  155.2W ML=3.2  EMSC   ISLAND OF HAWAII, HAWAII     

P: 11AUG2019 117741    19.4N  155.3W 3.0-4.3 AAAAA  Hawaii                     

 

NEIC reported this earthquake of M 3.2 in Hawaii was felt with intensity II-III in the area(s) of Volcano, Hilo and Papaikou, Hawaii.

 

STRONG EARTHQUAKE IN WESTERN TURKEY

 

EARTHQUAKE SUMMARY FOR AUGUST 8, 2019

 

Strong seismicity continued today near 103 degrees from the M 7.1 in Southern California of July 6, 2019. Seismic energy is concentrated at this distance from large surface disturbances by reflection and refraction of seismic energy off the core-mantle boundary back to the surface where it arrives in this distance zone. Yesterday moderately strong earthquakes in Taiwan and Hindu Kush, Afghanistan occurred near this distance from Southern California. Today an M 5.8 was widely felt in western Turkey at 101-102 from the California epicenters. Today's event was preceded by a series of light foreshocks and at least one moderate event of M 4.6 to the west of the mainshock epicenter. This appears to be part of the activation of the Anatolian Fault Zone which began shortly after the mainshocks in California as noted in previous issues of this report:

 

"Energy on the surface from California does not have a good angle with the east-west orientation of the North Anatolian Fault though, so a major quake in this  area, while it could happen, is unlikely to have been triggered from California.

Still, the conditions may be ripe for a moderate quake in northern Turkey or Greece at this time. Both areas respond to geomagnetic storms." (July 10, 2019)

 

Note that these areas including Turkey were known to respond to geomagnetic storms. The storm of August 4-6 is now declining and immediate effects on seismicity  may be completed in today's activity in northwestern Turkey. But a strong related earthquake to the geomagnetic storm is still possible around August 10-12 as noted:

 

"The geomagnetic field saw minor to major storm conditions today. The AP level was 6.  High latitude geomagnetic field saw active conditions  with AP at 7.  This concludes the greatest disturbance in the geomagnetic field since AP reached 36 on May 14, 2019.  The last storm of significantly larger AP occurred nearly a year ago on August 26, 2008 when AP reached 76 and high latitude AP was 90. Seismic increases are likely at high latitudes and within about 15 degrees of the geomagnetic equator beginning August 6 through August 11 due to triggering effects from this storm. The most likely timing of a strong to major event is August 10-12, the most likely regions - Indonesia, the Philippines the Southwest Pacific and Alaska." (August 5-7, 2019)

 

NEIC reported the M 5.8 in Turkey was felt with maximum intensity VI in Turkey at Isparta and IV in Denizli and Antalya with lesser II-III shaking reported from Baklan, Yesilova, Akkoy, Karacasu, Ayden, Dalaman and Fethiye Mugla, Turkey.

An M 4.2 minutes before the M 5.8 was felt with intensity III in Isparta and Manavgat, Antalya, Turkey. The M 4.6 near the coast of western Turkey which preceded both was reported by NEIC to have been felt with maximum intensity IV in Sefenhisar and Menderes, Izmit and in Kusadasi, Aydin, Turkey. Lesser shaking of II-III was reported from Urla, Izmit, Soke, Cesme and Goca, Izmit and in Kokkanon Samos, Greece.

 

The M 5.8 was the strongest earthquake within about 200 km of that epicenter since an M 6.0 on February 3, 2002 more than 17 years ago. Forecast 117818 and 117770 had expected today's activity was likely in early August. This epicenter is at 101-104 degrees from the Banda Sea event of June 24, 2019 (M 7.3); the M 8.0 in Peru of May 26, 2019 and the M 7.1 event in Southern California of July 6, 2019. These sources probably helped promote enhanced seismicity in Turkey at this time.

 

O:  8AUG2019 11:19:36  37.9N   29.6E ML=4.2  EMSC   WESTERN TURKEY               

O:  8AUG2019 11:25:31  37.9N   29.6E Mw=5.8  EMSC   WESTERN TURKEY               

P:  4AUG2019 117818    39.0N   31.0E 3.5-4.8 BBAAA  Turkey                     

 

O:  8AUG2019 08:39:08  38.0N   26.9E mb=4.6  EMSC   NEAR THE COAST OF WESTERN TURK

P:  6AUG2019 117770    39.0N   27.0E 3.0-4.3 AAAAA  Aegean Sea                 

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:  8AUG2019 18:04:03  38.2N   75.2E mb=4.6  EMSC   SOUTHERN XINJIANG, CHINA     

P:  9AUG2019 117785    38.0N   73.0E 3.8-5.1 AABAA  Hindu Kush/Pakistan        

 

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

 

INDONESIA AND PHILIPPINES

 

O:  8AUG2019 20:26:35   1.3N  126.3E mb=4.6  EMSC   MOLUCCA SEA                  

P: 11AUG2019 117715     1.0N  126.0E 4.0-5.3 BAAAA  Mindanao, Philippines      

 

O:  8AUG2019 16:05:32   1.6N  119.2E ML=4.8  EMSC   MAKASSAR STRAIT, INDONESIA   

P:  5AUG2019 117733     1.0S  120.0E 4.0-5.3 BCAAA  Sulawesi area              

 

O:  9AUG2019 01:09:49   2.6S  137.4E ML=3.8  EMSC   PAPUA, INDONESIA             

P:  9AUG2019 117728     3.0S  133.0E 4.0-5.3 AACAA  Papua New Guinea           

 

O:  8AUG2019 17:56:45   3.7S  140.3E mb=4.8  EMSC   PAPUA, INDONESIA             

P:  6AUG2019 117728     2.0S  140.0E 4.0-5.3 ABAAA  Papua New Guinea           

 

O:  8AUG2019 09:11:59   7.2S  129.6E ML=4.4  EMSC   KEPULAUAN BABAR, INDONESIA   

O:  8AUG2019 20:53:00   7.4S  129.5E ML=4.4  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 11AUG2019 117718     6.0S  129.0E 4.0-5.3 BBAAA  Banda Sea                  

 

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

 

CENTRAL AND SOUTH AMERICA

 

O:  9AUG2019 02:09     32.1S   71.0W mb=5.0  GUC    Valparaiso at Quillota; IV in

P:  5AUG2019 117916    31.0S   69.0W 4.0-5.4 BBBAA  Central Chile              

 

CSN reported this earthquake was felt with intensity  V in  Valparaiso at Quillota; IV in La Ligua, Los Andes, San Felipe, Zapallar and III in Casablanca, Quilpue, Valparsiao II in El Quisco and Santo Domingo; in Santiago with III in Colina, El Monte, Paine, Puente Alto, San Bernardo, Santiago, Talagante, Tiltil and in O'Higgiins with III in Rancagua and II in Navidad, Chile.

 

O:  8AUG2019 06:37     30.3S   71.2W mb=4.0  GUC    Coquimbo at Andacollo, La Higu

P:  5AUG2019 117916    31.0S   69.0W 4.0-5.4 BABAA  Central Chile              

 

CSN reported this earthquake was felt with intensity  IV in  Coquimbo at Andacollo, La Higuera and La Serena; III in Coquimbo and Paiguano, Chile.

 

O:  8AUG2019 12:11:30   9.0N   84.2W ML=4.1  EMSC   COSTA RICA                   

P:  5AUG2019 117713     9.0N   84.0W 3.5-4.9 BAAAA  Costa Rica                 

 

O:  8AUG2019 19:11:01  15.5N   95.6W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

O:  8AUG2019 21:16:03  15.8N   95.2W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  7AUG2019 117748    17.0N   98.0W 3.5-5.1 ABBAA  Oaxaca, Mexico             

 

O:  9AUG2019 05:47:57  17.4N   94.7W mb=4.2  EMSC   VERACRUZ, MEXICO             

P: 29JUL2019 117523    17.0N   94.0W 3.5-5.0 CAAAA  Chiapas, Mexico            

 

O:  9AUG2019 05:01:14  18.4N   69.1W ML=3.7  EMSC   DOMINICAN REPUBLIC           

O:  8AUG2019 08:35:44  18.9N   69.4W ML=3.1  EMSC   DOMINICAN REPUBLIC           

O:  9AUG2019 03:19:40  19.7N   69.8W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P:  8AUG2019 117752    18.0N   69.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O:  9AUG2019 02:09:35  32.1S   70.9W mb=4.9  EMSC   VALPARAISO, CHILE            

P:  5AUG2019 117916    31.0S   69.0W 4.0-5.4 BBBAA  Central Chile              

 

NEIC reported this earthquake of M 4.9 in  Valparaiso, Chile  was felt with intensity IV in Llaillay, Valparaiso and II-III in the area(s) of Valparaiso, Chile Quillota, Vina del Mar, Valparaiso and in Santiago at Penaflor, San Bernardo and Puente Alto. 

 

O:  8AUG2019 11:26:19  38.3S   75.1W ML=4.4  EMSC   OFF COAST OF ARAUCANIA, CHILE

P:  6AUG2019 117918    37.0S   73.0W 4.0-5.4 ABBAA  Central Chile              

 

 

AFRICA AND EUROPE

 

O:  9AUG2019 02:24:29  33.3N   35.4E Mc=3.4  EMSC   LEBANON - SYRIA REGION       

P:  6AUG2019 117816    35.0N   33.0E 3.5-4.8 BBBAA  Turkey                     

 

O:  8AUG2019 11:19:36  37.9N   29.6E ML=4.2  EMSC   WESTERN TURKEY               

O:  8AUG2019 11:25:31  37.9N   29.6E Mw=5.8  EMSC   WESTERN TURKEY               

P:  4AUG2019 117818    39.0N   31.0E 3.5-4.8 BBAAA  Turkey                     

 

O:  8AUG2019 08:39:08  38.0N   26.9E mb=4.6  EMSC   NEAR THE COAST OF WESTERN TURK

P:  6AUG2019 117770    39.0N   27.0E 3.0-4.3 AAAAA  Aegean Sea                 

 

O:  8AUG2019 07:49:46  45.6N   26.7E ML=3.6  EMSC   ROMANIA                      

P:  5AUG2019 117849    46.0N   26.0E 3.0-4.8 BAAAA  Romania/NW Turkey          

 

O:  8AUG2019 16:52:06  50.1N    5.1W ML=2.2  EMSC   ENGLAND, UNITED KINGDOM      

 

 

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

 

SOUTHWEST PACIFIC

 

O:  9AUG2019 02:54:37   5.1S  151.2E Mw=5.3  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 10AUG2019 117724     6.0S  154.0E 4.0-5.3 AACAA  New Britain                

 

O:  9AUG2019 01:39:03  23.9S  179.7W mb=4.7  EMSC   SOUTH OF FIJI ISLANDS        

P: 10AUG2019 117913    22.0S  180.0W 4.0-5.3 ABAAA  Tonga Islands              

 

OCEAN RIDGES

 

O:  9AUG2019 01:55:55   4.7S  106.1W mb=4.7  EMSC   CENTRAL EAST PACIFIC RISE    

P:  7AUG2019 117725     4.0S  104.0W 4.0-5.4 AABAA  No. East Pacific Rise      

 

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

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  9AUG2019 02:55:17  19.8S  148.7E ML=3.5  EMSC   QUEENSLAND, AUSTRALIA        

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

O:  8AUG2019 18:56:46  25.6N  124.8E mb=5.1  EMSC   NORTHEAST OF TAIWAN          

P:  8AUG2019 117765    26.0N  126.0E 4.0-5.3 AAAAA  Ryukyu Islands             

 

O:  8AUG2019 08:25:29  52.3N  152.6E mb=4.2  EMSC   NORTHWEST OF KURIL ISLANDS   

P:  9AUG2019 117851    49.0N  153.0E 3.5-5.3 ACAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  8AUG2019 10:35:42  31.9N  115.8W ML=2.4  EMSC   BAJA CALIFORNIA, MEXICO      

P:  5AUG2019 117803    32.0N  116.3W 2.5-4.3 BAAAA  So. California             

 

O:  8AUG2019 17:43:58  35.5N  118.4W Ml=2.3  EMSC   CENTRAL CALIFORNIA            

P:  4AUG2019 117808    35.3N  118.6W 2.5-4.5 BAAAA  So. California             

 

O:  8AUG2019 22:55:44  35.7N  117.5W Ml=2.5  EMSC   SOUTHERN CALIFORNIA          

O:  9AUG2019 00:09:57  35.9N  117.7W ML=3.0  EMSC   CENTRAL CALIFORNIA           

O:  9AUG2019 02:32:42  36.1N  117.3W Ml=2.7  EMSC   CENTRAL CALIFORNIA           

P:  4AUG2019 117772    35.7N  117.5W 2.5-4.4 BAAAA  California/Nevada area     

 

O:  9AUG2019 04:39:07  36.2N  118.2W ML=3.2  EMSC   CENTRAL CALIFORNIA           

O:  9AUG2019 01:51:24  36.2N  118.2W Ml=2.7  EMSC   CENTRAL CALIFORNIA           

P:  8AUG2019 117771    36.3N  118.1W 2.5-4.6 AAAAA  California/Nevada area     

 

O:  9AUG2019 04:32:18  37.3N  121.6W Md=2.6  EMSC   NORTHERN CALIFORNIA          

O:  8AUG2019 20:31:33  37.4N  121.6W Md=2.7  EMSC   NORTHERN CALIFORNIA          

P:  5AUG2019 117778    37.4N  121.8W 2.5-4.3 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in  Northern California was felt with intensity II-III in the area(s) of Northern California in Mount Hamilton, San Jose, Sunnyvale, Hayward, Redwood City, and Stockton.

NEIC reported the earthquake of M 2.6 in Central California was felt with intensity II-III in the area(s) of San Jose and Morgan Hill, California.

 

O:  8AUG2019 16:03:18  38.5N  119.6W MD=2.3  EMSC   NORTHERN CALIFORNIA          

P:  5AUG2019 117775    38.7N  119.7W 2.5-4.5 BAAAA  California/Nevada area     

 

O:  8AUG2019 17:15:43  38.8N  122.8W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P:  8AUG2019 117779    38.8N  122.8W 2.5-4.3 AAAAA  Central California         

 

O:  8AUG2019 16:53:29  40.4N  125.6W Md=2.9  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 10AUG2019 117841    40.9N  126.3W 2.5-4.3 AAAAA  Off Coast of No. Calif     

 

ALASKA

 

No events of M>=3 were located in Alaska today.

 

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:  8AUG2019 12:25:12  32.7N  109.1W ML=2.6  EMSC   ARIZONA                       

 

NEIC reported this earthquake of M 2.6 in  Arizona was felt with intensity II-III in the area(s) of Arizona at Phoenix and Prescott Valley and in Lordsburg, New Mexico.

 

O:  9AUG2019 03:46:52  45.9N  111.4W ML=3.1  EMSC   WESTERN MONTANA               

P: 11AUG2019 117835    45.7N  112.1W 2.0-3.9 AAAAA  Montana/Idaho              

 

NEIC reported this earthquake of M 3.1 in Western Montana  was felt with intensity II-III in the area(s) of Western Montana at Three Forks, Manhattan, Belgrade and Bozeman.

 

EASTERN U.S./CANADA

 

O:  8AUG2019 10:17:27  35.1N   95.4W ML=2.3  EMSC   OKLAHOMA                     

P:  9AUG2019 117813    36.0N   97.0W 2.0-3.8 AAAAA  Southern Plains            

 

O:  8AUG2019 11:19:27  35.2N   99.5W ML=2.6  EMSC   OKLAHOMA                     

P: 11AUG2019 117802    35.4N  101.8W 2.0-3.9 BABAA  SW U.S.A                   

 

O:  9AUG2019 06:34:58  35.8N   98.1W mb=3.1  EMSC   OKLAHOMA                     

P:  9AUG2019 117813    36.0N   97.0W 2.0-3.8 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.5 in  Oklahoma  was felt with intensity II-III in the area(s) of Oklahoma at Edmond, Oklahoma City and Norman. 

 

O:  9AUG2019 02:13:54  37.1N   98.0W mb=2.8  EMSC   KANSAS                       

P:  5AUG2019 117814    38.0N   98.0W 2.0-3.9 BAAAA  Southern Plains            

 

O:  8AUG2019 11:17:39  47.5N   70.3W mb=2.6  EMSC   ST. LAWRENCE VALLEY REG., CANA

O: 08AUG2019 11:17:39  47.5N   70.2W MB=3.0  ECAN La Malbaie, QC. Felt  

O: 07AUG2019 16:46:32  47.5N   70.4W MB=1.8  ECAN Charlevoix Seismic Zone

O: 07AUG2019 06:37:14  47.4N   70.4W MB=0.9  ECAN Charlevoix Seismic Zone

O: 07AUG2019 03:13:09  47.5N   70.1W MB=1.0  ECAN  Charlevoix Seismic Zone     

P:  6AUG2019 117836    47.3N   70.5W 2.0-3.8 AAAAA  New England                

 

O:  8AUG2019 02:27:09  77.5N  101.7W MB=2.1  ECAN Isachsen, NU                   

 

O:  7AUG2019 23:14:50  74.7N   83.6W MB=2.1  ECAN Dundas Harbour, NU             

 

HAWAII

 

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

 

STRONG QUAKES SHAKE TAIWAN AND AFGHANISTAN/PAKISTAN

 

EARTHQUAKE SUMMARY FOR AUGUST 7, 2019

 

Moderately large earthquakes were felt widely today in Taiwan (M 5.9-6.0) and in Afghanistan/Pakistan (M 5.8).

 

The strongest of these was an M 5.9-6.0 off the northern coast of Taiwan. NEIC reported maximum intensity V in Ilan, Taipei, and Keelung, Taiwan and IV in Taipei and Hualien.  CWB reported this earthquake was felt with intensity VI in Yilan; IV in Hualien, Taipei, Hsinchu, Taoyuan, Taichung; III in Nantou, Keelung, Miaoli, Changhua and Yunlin; II in Chiayi, Tainan and I in Taitung, Kaohsiung, Pingtung and Penghu Counties, Taiwan. An aftershock of M 4.6 was reported felt with intensity III in Yilan and Taipei; II in Taoyuan and I in Hualien, Keelung, Hsinchu, Nantou, Miaoli and Taichung Counties, Taiwan.

 

This earthquake in northern Taiwan was probably triggered by stresses from the strong Typhoon Lekima now with winds up to 140 kts, which was situated near the epicenter at the time of the earthquake. This summary in the previous issue had expected this possibility as:

 

"TYPHOON LEKIMA (10W) continued  east of the Northern Philippines  today with winds up to 85 kts. This system is currently moving northeastward. It may strengthen and impact central Philippines and Taiwan early next week. A seismic watch may be called for Taiwan, northern and Central Philippines and the Ryukyu Islands." (August 6-7, 2019)

 

The last earthquake in Taiwan within about 200 km of today's epicenter with M>=6 occurred as an M 6.1 on April 18, 2019 and prior to that an M 6.4 on February 6, 2018.  Forecast 117767 had expected today's event was likely within about 50 km of this epicenter around August 7. This epicenter is near 100 degrees from Southern California where an M 7.1 on July 6, 2019 may have provided energy to promote the Taiwan region.

 

O:  7AUG2019 21:28:05  24.5N  122.0E Mw=5.8  EMSC   TAIWAN                       

O:  7AUG2019 21:28:03  24.4N  121.9E ML=6.0  TAI    Hualien, Taiwan              

O:  7AUG2019 23:02:23  24.6N  121.8E ML=4.6  EMSC   TAIWAN                       

O:  7AUG2019 23:02:23  24.6N  121.8E ML=4.6  TAI    Hualien, Taiwan              

P:  7AUG2019 117767    24.0N  122.0E 4.0-5.3 AAAAA  Taiwan                     

 

The earthquake in Hindu Kush, Afghanistan was reported by NEIC to have been felt with maximum intensity IV in Dirn, North-west Frontier Pakistan and II-III in Afghanistan at Kanabad, Mahmoud Raqui; in Tajikistan at Khorug Gorno-Badakhstan, Bustonkala, Khatlon, Obigarm, and Dushanbe and in North-west Frontier,, Pakistan at Tall, and Mingaora.  

The last earthquake of M>=5.8 in the Hindu Kush region of Afghanistan within about 200 km of this epicenter occurred more than a year ago on May 9, 2018 with M 6.2 and prior to that on January 31, 2018 and April 10, 2016 with M 6.1 and 6.6 respectively.   A major M 7.5 hit the region on October 26, 2015 and today's event may be an aftershock of that. Forecast 117785 had expected this activity in Hindu Kush was likely in early August. This epicenter is located at 107 degrees from the M 7.1 in Central California of July 6, 2019 and may have been promoted by concentrated energy from that source as suggested in previous issues of this report:

 

"Areas at ...  or near 103 degrees from Southern California include southern New Zealand, Greece and Turkey and Iran/Iraq, Central Asia and China, the Northern Philippines, New Britain and eastern Indonesia. These areas could see enhanced seismicity in the coming days and are marked on the accompanying map by stippled white lines." (July 6, 2019)

 

 

O:  8AUG2019 06:42:45  36.5N   70.8E mb=4.3  EMSC   HINDU KUSH REGION, AFGHANISTAN

O:  8AUG2019 00:45:26  36.6N   70.2E Mw=5.8  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  1AUG2019 117785    36.0N   72.0E 3.8-5.2 CABAA  Hindu Kush/Pakistan        

P:  9AUG2019 117785    38.0N   73.0E 3.8-5.1 ABBAA  Hindu Kush/Pakistan        

 

The earthquakes in Afghanistan and Taiwan are situated in locations which the geomagnetic storm of August 5-6 could have activated as both lie within about 15 degrees of the local geomagnetic equator. This summary had noted the likelihood of triggering from this storm in the previous issue as:

 

"The geomagnetic field saw minor to major storm conditions today. The AP level was 24.  High latitude geomagnetic field saw active conditions  with AP at 12.  This is the greatest disturbance in the geomagnetic field since AP reached 36 on May 14, 2019.  The last storm of significantly larger AP occurred nearly a year ago on August 26, 2008 when AP reached 76 and high latitude AP was 90. Seismic increases are likely at high latitudes and within about 15 degrees of the geomagnetic equator beginning August 6 through August 11 due to triggering effects from this storm. The most likely timing of a strong to major event is August 10-12, the most likely regions - Indonesia, the Philippines the Southwest Pacific and Alaska." (August 6-7, 2019)

 

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:  7AUG2019 21:28:05  24.5N  122.0E Mw=5.8  EMSC   TAIWAN                       

O:  7AUG2019 23:02:23  24.6N  121.8E ML=4.6  EMSC   TAIWAN                       

O:  7AUG2019 21:28:03  24.4N  121.9E ML=6.0  TAI    Hualien, Taiwan              

O:  7AUG2019 23:02:23  24.6N  121.8E ML=4.6  TAI    Hualien, Taiwan              

P:  7AUG2019 117767    24.0N  122.0E 4.0-5.3 AAAAA  Taiwan                     

 

CWB reported this earthquake was felt with intensity VI in Yilan; IV in Hualien, Taipei, Hsinchu, Taoyuan, Taichung; III in Nantou, Keelung, Miaoli, Changhua and Yunlin; II in Chiayi, Tainan and I in Taitung, Kaohsiung, Pingtung and Penghu Counties, Taiwan.

An aftershock of M 4.6 was reported felt with intensity III in Yilan and Taipei; II in Taoyuan and I in Hualien, Keelung, Hsinchu, Nantou, Miaoli and Taichung Counties, Taiwan.

 

O:  8AUG2019 06:42:45  36.5N   70.8E mb=4.3  EMSC   HINDU KUSH REGION, AFGHANISTAN

O:  8AUG2019 00:45:26  36.6N   70.2E Mw=5.8  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  1AUG2019 117785    36.0N   72.0E 3.8-5.2 CABAA  Hindu Kush/Pakistan        

P:  9AUG2019 117785    38.0N   73.0E 3.8-5.1 ABBAA  Hindu Kush/Pakistan        

 

INDONESIA AND PHILIPPINES

 

O:  7AUG2019 18:15:24   0.1S  123.9E ML=4.2  EMSC   SULAWESI, INDONESIA          

P:  6AUG2019 117733     2.0S  123.0E 4.0-5.3 ABAAA  Sulawesi area              

 

O:  7AUG2019 18:31:27   2.0S  139.0E ML=4.3  EMSC   EAR N COAST OF PAPUA, INDONESI

P:  6AUG2019 117728     2.0S  140.0E 4.0-5.3 AAAAA  Papua New Guinea           

 

O:  8AUG2019 06:07:51   3.9N  126.5E ML=4.3  EMSC   KEPULAUAN TALAUD, INDONESIA  

P:  2AUG2019 117714     3.0N  127.0E 4.0-5.3 CAAAA  Halmahera                  

 

O:  7AUG2019 15:53:08   5.7S  102.9E ML=4.0  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  8AUG2019 117731     6.0S  102.0E 4.0-5.5 AAAAA  So. of Sumatera            

 

O:  7AUG2019 19:53:26   6.0N  125.9E mb=4.5  EMSC   MINDANAO, PHILIPPINES        

O:  7AUG2019 09:25:20   6.0N  126.2E ML=4.6  EMSC   MINDANAO, PHILIPPINES        

P:  9AUG2019 117711     8.0N  125.0E 4.0-5.3 ABAAA  Central Philippines        

 

O:  7AUG2019 20:27:29   7.8S  104.3E ML=4.7  EMSC   SOUTHWEST OF SUMATRA, INDONESI

P:  5AUG2019 117730     6.0S  105.0E 4.0-5.3 ABAAA  So. of Java                

 

O:  7AUG2019 19:22:10   8.2S  105.1E ML=4.1  EMSC   SOUTH OF JAVA, INDONESIA     

P:  5AUG2019 117730     6.0S  105.0E 4.0-5.3 ACAAA  So. of Java                

 

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

 

CENTRAL AND SOUTH AMERICA

 

O:  7AUG2019 07:40:00   8.9S   79.4W ML=4.2  EMSC   NEAR COAST OF NORTHERN PERU  

P:  4AUG2019 117726     9.0S   80.0W 4.0-5.4 BAAAA  No. Peru                   

 

O:  8AUG2019 04:39:22  14.9S   76.1W Mw=4.9  EMSC   NEAR COAST OF CENTRAL PERU   

P: 11AUG2019 117893    15.0S   76.0W 4.0-5.3 BAAAA  Central Peru               

 

O:  7AUG2019 23:40:41  18.1N   70.8W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

O:  7AUG2019 18:26:56  18.6N   71.7W ML=3.1  EMSC   DOMINICAN REPUBLIC           

O:  7AUG2019 20:19:11  19.9N   70.4W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

O:  7AUG2019 21:13:20  19.9N   70.4W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

O:  7AUG2019 16:02:22  19.9N   70.5W ML=3.1  EMSC   DOMINICAN REPUBLIC REGION    

O:  7AUG2019 18:48:55  19.9N   70.5W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P:  5AUG2019 117752    19.0N   71.0W 3.4-4.8 AAAAA  Puerto Rico                

 

O:  8AUG2019 06:37:38  30.3S   71.2W ML=4.0  EMSC   COQUIMBO, CHILE              

P:  5AUG2019 117906    29.0S   70.0W 4.0-5.4 BBAAA  Coast Central Chile        

P:  5AUG2019 117916    31.0S   69.0W 4.0-5.4 BABAA  Central Chile              

 

 

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

 

AFRICA AND EUROPE

 

O:  7AUG2019 14:46:39  45.5N   26.5E ML=3.9  EMSC   ROMANIA                      

P:  5AUG2019 117849    46.0N   26.0E 3.0-4.8 AAAAA  Romania/NW Turkey          

 

O:  8AUG2019 05:36:35  45.7N   11.1E ML=3.7  EMSC   NORTHERN ITALY               

P:  9AUG2019 117829    44.0N   11.0E 3.0-4.8 ABAAA  Italy                      

 

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

 

SOUTHWEST PACIFIC

 

O:  8AUG2019 03:38:04  24.0S  179.6W mb=4.9  EMSC   SOUTH OF FIJI ISLANDS        

P:  9AUG2019 117913    27.0S  176.0W 4.0-5.3 ACCAA  Tonga Islands              

 

O:  7AUG2019 07:06:40  25.3S  179.9E mb=4.8  EMSC   SOUTH OF FIJI ISLANDS        

P: 30JUL2019 117695    25.0S  179.0E 4.0-5.3 CAAAA  Tonga/Fiji                 

 

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

 

OCEAN RIDGES

 

O:  7AUG2019 12:26:49  35.0S  108.1W mb=5.0  EMSC   SOUTHERN EAST PACIFIC RISE   

 

O:  7AUG2019 07:11:09  41.0S   90.4W mb=4.6  EMSC   SOUTHEAST OF EASTER ISLAND   

P:  3AUG2019 117919    36.0S   97.0W 4.0-5.5 BBCAA  Chile Rise                 

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  8AUG2019 01:03:15  18.6S  120.5E ML=3.6  EMSC   WESTERN AUSTRALIA             

P:  6AUG2019 117915    19.0S  120.0E 2.0-3.3 AAAAA  Central Australia          

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

O:  7AUG2019 12:10:44  37.3N  141.2E mb=4.5  EMSC   NEAR EAST COAST OF HONSHU, JAP

P:  7AUG2019 117798    36.0N  142.0E 4.0-5.3 ABAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  7AUG2019 20:13:02  31.0N  115.3W ML=3.2  EMSC   BAJA CALIFORNIA, MEXICO      

P:  5AUG2019 117803    32.0N  116.3W 2.5-4.3 AAAAA  So. California             

 

O:  8AUG2019 05:08:06  35.6N  120.3W Md=2.3  EMSC   CENTRAL CALIFORNIA           

P: 10AUG2019 117776    36.1N  120.1W 2.5-4.3 AAAAA  Central California         

 

O:  7AUG2019 10:30:07  32.9N  115.5W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P:  7AUG2019 117805    32.9N  115.6W 2.5-4.3 AAAAA  So. California             

 

O:  8AUG2019 02:36:10  38.8N  122.8W Md=2.2  EMSC   NORTHERN CALIFORNIA          

P:  8AUG2019 117779    38.8N  122.8W 2.5-4.3 AAAAA  Central California         

 

O:  7AUG2019 20:19:21  36.0N  115.1W ml=2.2  EMSC   NEVADA                       

O:  7AUG2019 20:46:21  36.1N  114.6W ML=2.2  EMSC   ARIZONA                       

P:  7AUG2019 117774    38.7N  114.5W 2.5-4.3 ACAAA  California/Nevada area     

 

O: 08AUG2019 05:22:47  36.0N  117.4W Ml=2.9  EMSC   CENTRAL CALIFORNIA

O: 08AUG2019 01:11:05  35.7N  117.5W ML=2.7  EMSC   SOUTHERN CALIFORNIA

O: 07AUG2019 22:16:39  35.7N  117.6W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 07AUG2019 18:38:32  35.9N  117.4W Ml=2.6  EMSC   CENTRAL CALIFORNIA

O:  7AUG2019 16:39:26  35.8N  117.6W Ml=2.6  EMSC   CENTRAL CALIFORNIA           

P:  4AUG2019 117772    35.7N  117.5W 2.5-4.4 BAAAA  California/Nevada area     

 

ALASKA

 

O:  8AUG2019 02:50:31  60.4N  149.4W ml=3.3  EMSC   KENAI PENINSULA, ALASKA      

P:  7AUG2019 117876    60.1N  148.4W 3.2-5.1 AAAAA  Central Alaska             

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

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

 

ROCKY MOUNTAINS REGION

 

No earthquakes of M>=2 were located in the Rocky Mountain region today.

 

EASTERN U.S./CANADA

 

O:  7AUG2019 03:13:09  47.5N   70.1W MB=1.0  ECAN  Charlevoix Seismic Zone       

P:  6AUG2019 117836    47.3N   70.5W 2.0-3.8 AAAAA  New England                

 

O:  6AUG2019 22:40:03  59.7N   76.4W MB=3.0  ECAN Puvirnituq, QC                 

P:  5AUG2019 117869    59.0N   76.0W 2.0-3.9 AAAAA  Quebec, Canada              

 

O:  6AUG2019 17:44:32  47.2N   66.3W MB=1.6  ECAN Bathurst, NB                   

P: 10AUG2019 117833    49.3N   67.5W 2.0-3.8 BCAAA  Maine                      

 

O:  6AUG2019 13:23:25  59.9N   57.5W MB=3.2  ECAN Nutak, NL                       

P: 11AUG2019 117874    61.0N   58.0W 2.5-3.8 BBAAA  Baffin/Davis Strait Canada 

 

O: 07AUG2019 12:47:38  35.1N   95.4W ML=2.2  EMSC   OKLAHOMA

O: 07AUG2019 17:32:37  35.1N   95.4W mb=2.2  EMSC   OKLAHOMA

O:  8AUG2019 03:14:38  35.1N   95.3W ML=2.5  EMSC   OKLAHOMA                     

P:  9AUG2019 117813    36.0N   97.0W 2.0-3.8 AABAA  Southern Plains            

 

O: 08AUG2019 01:12:51  35.8N   98.1W ML=2.5  EMSC   OKLAHOMA

O: 07AUG2019 23:38:24  35.8N   98.1W mb=3.3  EMSC   OKLAHOMA

O:  8AUG2019 02:09:32  35.9N   98.0W ML=2.0  EMSC   OKLAHOMA                     

P:  5AUG2019 117814    36.0N   98.0W 2.0-3.8 BAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.5 in Oklahoma  was felt with intensity II-III in the area(s) of Oklahoma at Kingfisher, Yukon, Edmond, and Oklahoma City.

 

HAWAII

 

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

 

MODERATELY STRONG QUAKES SHAKE VANUATU

 

EARTHQUAKE SUMMARY FOR AUGUST 6, 2019

 

The strongest earthquakes of the day occurred in Vanuatu with M 5.8 and 5.9. The M 5.9 was reported by NEIC to have been felt with intensity III in Vila Shefa, Vanuatu. The stronger of these occurred near local solar noon, a time when geomagnetic effects can be strong. The last earthquakes of M>=5.8 in central Vanuatu occurred with M 6.6 on July 31, 2019; an M 6.0 on July 1, 2019 and an M 6.3 on March 20, 2019 all near the northerly of today's events. The last such quake of M>=5.9 within about  100 km of the southern event today was an M 6.0 on January 18,, 2019 and an M 6.1 on June 21, 2018.

Forecasts 117903 and 117904 had expected today's activity within about 150 km of these epicenter was likely around August 5-10. These events are at 102-104 degrees from the M 6.8 in Central Chile of August 1 and were probably promoted by concentrated surface energy from that event.

 

O:  7AUG2019 05:32:41  15.5S  167.7E Mw=5.8  EMSC   VANUATU                      

P: 10AUG2019 117903    14.0S  167.0E 4.0-5.3 BBAAA  Vanuatu Islands            

 

O:  6AUG2019 22:14:14  17.9S  168.6E Mw=5.9  EMSC   VANUATU                      

P:  5AUG2019 117904    19.0S  170.0E 4.0-5.4 ABAAA  Vanuatu Islands            

 

The activity in Vanuatu is typical of geomagnetic-promoted seismicity.  The current geomagnetic storm continued today. This summary had expected seismic activity related to this storm in previous issues as:

 

"The geomagnetic field saw minor to major storm conditions today. The AP level was 24.  High latitude geomagnetic field saw active conditions  with AP at 12.  This is the greatest disturbance in the geomagnetic field since AP reached 36 on May 14, 2019.  The last storm of significantly larger AP occurred nearly a year ago on August 26, 2008 when AP reached 76 and high latitude AP was 90. Seismic increases are likely at high latitudes and within about 15 degrees of the geomagnetic equator beginning August 6 through August 11 due to triggering effects from this storm. The most likely timing of a strong to major event is August 10-12, the most likely regions - Indonesia, the Philippines the Southwest Pacific and Alaska." (August 6-7, 2019)

 

Seismicity also continued today in the area of Lake Edward, Uganda. This region has been active with moderate quakes over the past two days and may be related to the geomagnetic storm which often activates the area of the East Africa Rift. Forecast 117508 had expected today's event in late July or early August.

 

NEIC reported this earthquake of M 4.6 in  Uganda was felt with intensity IV in the area(s) of Uganda at Katwe, Mbarara, Kigorobya and II-III in Kasese, Fort Portal, Kajansi, Kampala, Kireka and Jinja, Uganda. 

 

O:  6AUG2019 16:58:29   0.0S   30.1E mb=4.6  EMSC   LAKE EDWARD REGION, UGANDA   

P: 31JUL2019 117508     2.0S   29.0E 3.0-4.3 CBAAA  Lake Victoria area         

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:  6AUG2019 17:40:45  47.8N  143.7E mb=4.8  EMSC   SAKHALIN, RUSSIA             

P:  6AUG2019 117850    47.0N  146.0E 3.5-5.4 AABAA  So. Kurils                 

 

O:  6AUG2019 21:54:03  55.0N  164.5E mb=4.1  EMSC   KOMANDORSKIYE OSTROVA REGION 

P:  4AUG2019 117864    56.0N  166.0E 4.0-5.5 AAAAA  Komandorsky Isl            

 

INDONESIA AND PHILIPPINES

 

O:  6AUG2019 14:39:36   0.5S  127.8E mb=4.5  EMSC   HALMAHERA, INDONESIA         

O:  6AUG2019 12:06:25   0.6S  127.6E ML=4.5  EMSC   HALMAHERA, INDONESIA         

O:  6AUG2019 18:52:53   0.6S  127.7E mb=4.6  EMSC   HALMAHERA, INDONESIA         

P:  4AUG2019 117714     0.0N  128.0E 4.0-5.3 AAAAA  Halmahera                  

 

O:  6AUG2019 23:39:32   3.3S  131.1E ML=4.5  EMSC   CERAM SEA, INDONESIA         

P:  9AUG2019 117728     3.0S  133.0E 4.0-5.3 BABAA  Papua New Guinea           

 

O:  7AUG2019 05:11:13   5.1N  123.9E mb=4.6  EMSC   CELEBES SEA                  

P:  6AUG2019 117715     5.0N  124.0E 4.0-5.3 AAAAA  Mindanao, Philippines      

 

O:  6AUG2019 11:13:43  13.6N  120.8E mb=4.6  EMSC   MINDORO, PHILIPPINES         

P:  8AUG2019 117743    12.0N  121.0E 3.5-4.9 ABAAA  Luzon, Philippines         

 

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

 

CENTRAL AND SOUTH AMERICA

 

O:  7AUG2019 04:12:24   4.0N   78.7W mb=4.6  EMSC   SOUTH OF PANAMA              

P:  6AUG2019 117713     5.0N   83.0W 3.5-4.8 AACAA  Costa Rica                 

 

O:  6AUG2019 21:14:10  10.4N   84.3W mb=4.8  EMSC   COSTA RICA                   

P:  5AUG2019 117713     9.0N   84.0W 3.5-4.9 ABAAA  Costa Rica                 

 

NEIC reported this earthquake of M 4.8 in Costa Rica was felt with intensity V in Carrillos Alajuela and IV in Atenas, Costa Rica and II-III in the area(s) of Costa Rica in Alajuela and Heredia.

 

O:  7AUG2019 01:19:11  12.2N   87.9W mb=4.4  EMSC   NEAR COAST OF NICARAGUA      

P:  7AUG2019 117746    13.0N   88.0W 3.5-5.0 AAAAA  Nicaragua                   

 

O:  7AUG2019 01:49:07  14.5N   92.7W ML=4.2  EMSC   OFFSHORE CHIAPAS, MEXICO     

O:  6AUG2019 13:12:53  15.8N   93.9W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  8AUG2019 117740    14.0N   92.0W 3.5-5.1 AAAAA  Guatemala                   

 

O:  6AUG2019 23:51:27  17.5N   94.8W ML=4.2  EMSC   VERACRUZ, MEXICO             

P: 29JUL2019 117523    17.0N   94.0W 3.5-5.0 CAAAA  Chiapas, Mexico            

 

O:  6AUG2019 16:11:14  18.1N  103.3W ML=4.0  EMSC   OFFSHORE MICHOACAN, MEXICO   

P: 10AUG2019 117744    18.0N  103.0W 3.5-5.0 BAAAA  Michoacan, Mexico          

 

O:  6AUG2019 13:27:03  18.4N   66.1W ML=3.0  EMSC   SAN JUAN URBAN AREA, PUERTO RI

P:  6AUG2019 117751    19.0N   66.0W 3.4-4.8 AAAAA  Puerto Rico                

 

O:  6AUG2019 07:57:36  19.1N   64.6W Md=3.4  EMSC   VIRGIN ISLANDS REGION        

P:  6AUG2019 117750    18.0N   65.0W 3.4-4.9 ABAAA  Puerto Rico                

 

O:  6AUG2019 22:36:38  19.1N   69.5W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P:  5AUG2019 117752    19.0N   71.0W 3.4-4.8 AABAA  Puerto Rico                

 

O:  6AUG2019 23:46:08  19.6N   74.2W ML=3.8  EMSC   CUBA REGION                  

P:  5AUG2019 117752    19.0N   71.0W 3.4-4.8 AACAA  Puerto Rico                

 

O:  6AUG2019 17:15:06  19.7N   68.1W ML=3.4  EMSC   DOMINICAN REPUBLIC REGION    

O:  6AUG2019 11:20:27  19.7N   68.5W ML=3.5  EMSC   DOMINICAN REPUBLIC REGION    

P:  8AUG2019 117752    18.0N   69.0W 3.4-4.9 ABAAA  Puerto Rico                

 

O:  7AUG2019 06:16:35  20.7S   66.9W mb=4.1  EMSC   POTOSI, BOLIVIA              

P:  4AUG2019 117907    21.0S   69.0W 4.0-5.3 BABAA  Coast No. Chile            

 

O:  6AUG2019 18:26:41  27.4N  111.3W ML=3.7  EMSC   GULF OF CALIFORNIA           

P:  3AUG2019 117757    28.0N  112.0W 3.5-4.9 BAAAA  Gulf of California         

 

AFRICA AND EUROPE

 

O:  6AUG2019 16:58:29   0.0S   30.1E mb=4.6  EMSC   LAKE EDWARD REGION, UGANDA   

P: 31JUL2019 117508     2.0S   29.0E 3.0-4.3 CBAAA  Lake Victoria area         

 

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

 

SOUTHWEST PACIFIC

 

O:  7AUG2019 05:32:41  15.5S  167.7E Mw=5.8  EMSC   VANUATU                      

P: 10AUG2019 117903    14.0S  167.0E 4.0-5.3 BBAAA  Vanuatu Islands            

 

O:  6AUG2019 22:14:14  17.9S  168.6E Mw=5.9  EMSC   VANUATU                      

P:  5AUG2019 117904    19.0S  170.0E 4.0-5.4 ABAAA  Vanuatu Islands            

 

O:  6AUG2019 14:10:42  18.1S  175.1W mb=4.2  EMSC   TONGA                        

P: 11AUG2019 117901    19.0S  174.0W 4.0-5.3 BAAAA  Tonga Islands              

 

OCEAN RIDGES

 

O:  7AUG2019 04:02:15   6.1S  107.0W mb=4.5  EMSC   CENTRAL EAST PACIFIC RISE    

O:  6AUG2019 17:20:56   6.2S  107.3W mb=4.9  EMSC   CENTRAL EAST PACIFIC RISE    

P:  7AUG2019 117725     4.0S  104.0W 4.0-5.4 ACCAA  No. East Pacific Rise      

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O:  6AUG2019 16:00:12  19.7S  133.9E ML=2.7  EMSC   NORTHERN TERRITORY, AUSTRALIA

P:  3AUG2019 117915    19.0S  133.0E 2.0-3.3 CAAAA  Central Australia          

 

No earthquakes of M>=4 were recorded in the regions of Zealandia or Australia

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

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

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 07AUG2019 03:10:15  35.9N  117.7W Ml=2.6  EMSC   CENTRAL CALIFORNIA

O: 07AUG2019 01:41:45  35.6N  117.5W Ml=2.5  EMSC   SOUTHERN CALIFORNIA

O: 06AUG2019 21:32:22  35.6N  117.4W Ml=2.6  EMSC   SOUTHERN CALIFORNIA

O: 06AUG2019 19:47:07  35.8N  117.6W ML=3.1  EMSC   CENTRAL CALIFORNIA

O: 06AUG2019 17:33:32  35.7N  117.5W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O: 06AUG2019 10:42:12  35.6N  117.4W Ml=2.8  EMSC   SOUTHERN CALIFORNIA

O:  7AUG2019 04:51:39  35.7N  117.5W Ml=3.2  EMSC   SOUTHERN CALIFORNIA          

P:  4AUG2019 117772    35.7N  117.5W 2.5-4.4 BAAAA  California/Nevada area     

 

O:  6AUG2019 21:15:41  35.5N  115.5W ml=2.3  EMSC   SOUTHERN CALIFORNIA          

P:  4AUG2019 117772    35.7N  117.5W 2.5-4.4 AABAA  California/Nevada area     

 

O:  7AUG2019 01:43:32  35.5N  120.8W Md=2.0  EMSC   CENTRAL CALIFORNIA           

O:  7AUG2019 01:27:36  35.5N  120.8W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P:  6AUG2019 117776    36.2N  120.8W 2.5-4.3 AAAAA  Central California          

 

O:  7AUG2019 04:56:24  35.9N  120.7W Md=2.2  EMSC   CENTRAL CALIFORNIA           

P:  6AUG2019 117776    36.2N  120.8W 2.5-4.3 AAAAA  Central California         

 

O:  6AUG2019 23:26:13  36.1N  121.4W Md=2.6  EMSC   CENTRAL CALIFORNIA           

P:  8AUG2019 117777    36.2N  121.8W 2.5-4.4 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 Templeton, Cayucos, Atascadero and Paso Robles, Central California.

 

O:  6AUG2019 22:59:57  38.8N  122.4W Md=2.6  EMSC   NORTHERN CALIFORNIA          

O:  6AUG2019 08:09:41  38.8N  122.8W Md=2.3  EMSC   NORTHERN CALIFORNIA          

P:  8AUG2019 117779    38.8N  122.8W 2.5-4.3 AAAAA  Central California         

 

 

ALASKA

 

O:  7AUG2019 06:17:46  61.0N  148.2W ml=3.0  EMSC   SOUTHERN ALASKA              

P:  7AUG2019 117876    60.1N  148.4W 3.2-5.1 AAAAA  Central Alaska             

 

O:  7AUG2019 03:34:47  61.5N  150.0W ML=3.0  EMSC   SOUTHERN ALASKA              

P: 11AUG2019 117877    61.3N  150.9W 3.2-4.8 AAAAA  Central Alaska             

 

NEIC reported this earthquake of M 3.0 in Southern Alaska was felt with intensity II-III in the area(s) of Anchorage, Chugiak and Eagle River Souothern 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:  6AUG2019 18:08:29  45.9N  111.4W ML=2.9  EMSC   WESTERN MONTANA              

P: 11AUG2019 117835    45.7N  112.1W 2.0-3.9 BAAAA  Montana/Idaho              

 

NEIC reported this earthquake of M 2.9 in  Western Montana was felt with intensity II-III in the area(s) of Western Montana at Manhattan, Belgrade and Bozeman.

 

EASTERN U.S./CANADA

 

O:  6AUG2019 23:05:31  36.3N   97.5W mb=2.6  EMSC   OKLAHOMA                     

O:  6AUG2019 15:45:18  35.8N   98.1W ML=2.4  EMSC   OKLAHOMA                     

O:  6AUG2019 22:56:40  36.3N   97.5W mb=2.8  EMSC   OKLAHOMA                     

P:  5AUG2019 117814    36.0N   98.0W 2.0-3.8 AAAAA  Southern Plains            

 

O:  5AUG2019 21:58:56  45.6N   66.2W MB=2.1  ECAN Hampton, NB                    

P:  9AUG2019 117832    44.0N   68.0W 2.0-3.9 BBBAA  Maine                      

 

HAWAII

 

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