MODERATE SEISMICITY IN OCEAN RIDGE AREA

 

EARTHQUAKE SUMMARY FOR JULY 9, 2020

 

It was another quiet day in global seismicity. The largest earthquakes in the world today occurred in ocean ridges. These included an M 5.3 on the Carlsberg Ridge and an M 4.9 in the Southwest Indian Ridge. These remote earthquakes were not reported felt in these areas. The M 5.3 in the Carlsberg Ridge is the largest in that region since events of M 5.5 on November 14, 2019 and  on November 27, 2019 far to the north (500-1000 km) of today's epicenter. Today's event had been expected in forecast 125244 within about 200 km of this epicenter. 

 

O: 10JUL2020 06:29:42   2.6S   68.1E Mw=5.3  EMSC   CARLSBERG RIDGE              

P: 10JUL2020 125244     1.0S   67.0E 4.0-5.4 ABAAA  Indian Ocean               

 

The earthquake of M 4.9 in the Southwest Indian Ridge is the strongest within about 250 km of that epicenter since an M 5.9 on March 6, 2020. The only other such events in the region in the past year occurred on January 26, 2020 (M 5.1) and September 24, 2019 M 6.1 ..).  Forecast 125462 had expected activity in this area was likely around July 11. This earthquake is located near the antipode of Southern California but is probably not large enough to have significant effect on regional seismicity in this area.

 

O:  9JUL2020 16:09:08  31.7S   58.3E mb=4.9  EMSC   SOUTHWEST INDIAN RIDGE       

P: 11JUL2020 125462    34.0S   55.0E 4.0-5.5 ACCAA  So. Indian Ocean           

 

The strongest earthquake in the U.S. or Canada today was an M 3.7 in Central Alaska. NEIC reported this earthquake of M 3.6 in Central Alaska  was felt with intensity II-III in the area(s) of Central Alaska at Talkeetna, Palmer, Chugiak, Eagle River and Anchorage. The last earthquake in central Alaska within about 150 km of this epicenter with M>=3.7 occurred on April 16, 2020 with M 3.8. The last in this area with M>=4 was an M 4.2 five months ago on February 15, 2020. Forecast 125414 had expected this event was likely in this area around July 9.

 

 

O:  9JUL2020 16:44:18  62.3N  148.7W mb=3.7  EMSC   CENTRAL ALASKA               

P:  9JUL2020 125414    61.2N  147.4W 3.2-4.9 ABAAA  Central Alaska             

 

OTHER GLOBAL EARTHQUAKE ACTIVITY

 

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

 

ASIA

 

O:  9JUL2020 08:58:12  23.1N   93.3E mb=4.6  EMSC   MYANMAR-INDIA BORDER REGION  

O: 10JUL2020 04:27:00  30.2N   94.6E mb=4.0  EMSC   EASTERN XIZANG                

P: 11JUL2020 125295    25.0N   95.0E 4.0-5.4 ACAAA  Myanmar                    

 

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

 

INDONESIA AND PHILIPPINES

 

O:  9JUL2020 17:01:05   2.1S  102.0E mb=4.4  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 10JUL2020 125255     2.0S   99.0E 4.0-5.6 AACAA  So. of Sumatera            

 

O:  9JUL2020 12:44:55   3.1S  141.2E ML=4.5  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P:  6JUL2020 125252     4.0S  142.0E 4.0-5.8 BAAAA  Papua New Guinea            

 

O:  9JUL2020 20:40:24   3.5S  102.0E ML=4.1  EMSC   SOUTHERN SUMATRA, INDONESIA  

P:  7JUL2020 125256     6.0S  102.0E 4.0-5.4 ACAAA  So. of Sumatera            

 

O:  9JUL2020 18:51:46   6.6N  125.1E mb=4.6  EMSC   MINDANAO, PHILIPPINES         

P: 11JUL2020 125227     7.0N  126.0E 4.0-5.4 AAAAA  Central Philippines        

 

NEIC reported this earthquake of M 4.6 in Mindanao, Philippines  was felt with intensity V in the area(s) of Mindanao, Philippines in Digos.

 

O:  9JUL2020 16:08:22   6.6S  128.8E mb=4.6  EMSC   BANDA SEA                    

P:  5JUL2020 125238     7.0S  129.0E 4.0-5.4 BAAAA  Banda Sea                  

 

O: 10JUL2020 04:55:57   7.7S  106.9E ML=4.7  EMSC   JAVA, INDONESIA              

P:  8JUL2020 125254     9.0S  106.0E 4.0-5.6 ABAAA  So. of Java                

 

O: 10JUL2020 02:08:05   7.8S  111.9E ML=4.1  EMSC   JAVA, INDONESIA              

P:  8JUL2020 125253     9.0S  113.0E 4.0-5.5 ABAAA  So. of Bali                

 

 

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

 

CENTRAL AND SOUTH AMERICA

 

O:  9JUL2020 12:23:44  15.3N   93.9W ML=4.0  EMSC   OFFSHORE CHIAPAS, MEXICO     

P: 11JUL2020 125264    15.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O:  9JUL2020 20:10:00   6.9N   73.0W ML=4.5  EMSC   NORTHERN COLOMBIA            

P:  9JUL2020 125228     7.0N   73.0W 4.0-5.6 AAAAA  Colombia                   

 

O:  9JUL2020 13:20:09  15.7N   96.2W ML=4.0  EMSC   OAXACA, MEXICO               

P:  9JUL2020 125265    16.0N   95.0W 3.5-5.1 AAAAA  Chiapas, Mexico            

 

O:  9JUL2020 10:35:27  16.2N   98.3W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  6JUL2020 125280    16.0N   98.0W 3.5-5.3 BAAAA  Oaxaca, Mexico             

 

O: 10JUL2020 06:49:24  16.9N  105.5W mb=4.5  EMSC   OFF COAST OF MICHOACAN, MEXICO

P: 11JUL2020 125267    18.0N  106.0W 3.5-5.2 ABAAA  Coast of Jalisco, Mexico   

 

O:  9JUL2020 19:24:49  17.6N   94.8W ML=4.1  EMSC   VERACRUZ, MEXICO             

P:  9JUL2020 125265    16.0N   95.0W 3.5-5.1 ABAAA  Chiapas, Mexico            

 

O:  9JUL2020 08:11:24  17.8N   68.4W ML=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P:  7JUL2020 125283    19.0N   69.0W 3.4-5.1 ABAAA  Puerto Rico                

 

O:  9JUL2020 16:37:00  17.9N   66.9W ML=3.6  EMSC   PUERTO RICO REGION           

P:  5JUL2020 125282    18.0N   67.0W 3.4-4.9 BAAAA  Puerto Rico                

 

O: 10JUL2020 01:03:09  18.8N   69.5W ML=3.2  EMSC   DOMINICAN REPUBLIC           

P:  7JUL2020 125283    19.0N   69.0W 3.4-5.1 BAAAA  Puerto Rico                

 

O: 10JUL2020 02:46:13  19.1N   66.4W Md=3.1  EMSC   PUERTO RICO REGION           

P: 11JUL2020 125289    20.0N   67.0W 3.0-4.4 AAAAA  Bahamas/No. Caribbean      

 

O:  9JUL2020 17:48:08  19.6N   70.2W ML=3.2  EMSC   DOMINICAN REPUBLIC           

O:  9JUL2020 22:29:11  20.2N   70.7W ML=3.2  EMSC   DOMINICAN REPUBLIC REGION    

P:  7JUL2020 125283    19.0N   71.0W 3.4-5.1 ABAAA  Puerto Rico                

 

 

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

 

AFRICA AND EUROPE

 

O:  9JUL2020 08:57:43  63.2N   24.2W ML=3.0  EMSC   ICELAND REGION               

O:  9JUL2020 16:12:13  63.9N   22.4W ML=3.3  EMSC   ICELAND REGION               

P:  9JUL2020 125419    63.0N   26.0W 3.0-4.8 AAAAA  Iceland area               

 

O:  9JUL2020 15:06:41  32.0S   32.6E ML=3.4  EMSC   OFF COAST OF SOUTH AFRICA    

P:  4JUL2020 125449    27.0S   27.0E 3.0-4.4 BCCAA  Rep. South Africa          

 

O:  9JUL2020 22:14:40  77.7N    8.0E Mn=3.0  EMSC   SVALBARD REGION              

P: 10JUL2020 125424    79.0N    7.0E 4.0-5.8 ABAAA  Arctic Ocean Region        

 

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

 

SOUTHWEST PACIFIC

 

O:  9JUL2020 15:39:32  12.4S  167.0E mb=4.3  EMSC   SANTA CRUZ ISLANDS           

P:  6JUL2020 125439    11.0S  165.0E 4.0-5.8 ABBAA  Vanuatu Islands            

 

O:  9JUL2020 08:39:11  15.4S  173.9W mb=4.6  EMSC   TONGA                        

P:  6JUL2020 125432    15.0S  173.0W 4.0-5.5 BAAAA  Samoa Islands              

 

O:  9JUL2020 16:51:39  23.4S  179.8W mb=4.4  EMSC   SOUTH OF FIJI ISLANDS        

P:  8JUL2020 125454    22.0S  179.0W 4.0-5.4 ABAAA  Tonga Islands              

 

O:  9JUL2020 21:23:04  19.8S  173.7W mb=4.8  EMSC   TONGA                         

P: 11JUL2020 125454    21.0S  174.0W 4.0-5.8 ABAAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O: 10JUL2020 06:29:42   2.6S   68.1E Mw=5.3  EMSC   CARLSBERG RIDGE              

P: 10JUL2020 125244     1.0S   67.0E 4.0-5.4 ABAAA  Indian Ocean               

 

O:  9JUL2020 16:09:08  31.7S   58.3E mb=4.9  EMSC   SOUTHWEST INDIAN RIDGE       

P: 11JUL2020 125462    34.0S   55.0E 4.0-5.5 ACCAA  So. Indian Ocean           

 

O:  9JUL2020 22:14:40  77.7N    8.0E Mn=3.0  EMSC   SVALBARD REGION              

P: 10JUL2020 125424    79.0N    7.0E 4.0-5.8 ABAAA  Arctic Ocean Region        

 

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

 

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

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O:  9JUL2020 20:32:54  33.7N  118.1W Ml=2.1  EMSC   GREATER LOS ANGELES AREA, CALI

P: 10JUL2020 125343    34.2N  117.8W 2.5-4.5 AAAAA  So. California             

 

O:  9JUL2020 10:03:43  33.9N  117.5W ML=2.6  EMSC   GREATER LOS ANGELES AREA, CALI

P: 11JUL2020 125343    33.7N  117.5W 2.5-4.5 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.0 in the Greater Los Angeles, California area  was felt with intensity II-III in the area(s) of the Greater Los Angeles, California area at Riverside, Norco, Corona, Mira Loma.

 

O:  9JUL2020 12:22:21  34.2N  119.2W Ml=2.4  EMSC   GREATER LOS ANGELES AREA, CALI

P:  5JUL2020 125345    34.7N  119.0W 2.5-4.6 BAAAA  So. California             

 

O:  9JUL2020 07:19:57  31.9N  116.2W MB=3.3  EMSC   BAJA CALIFORNIA, MEXICO      

P:  6JUL2020 125339    32.5N  115.7W 2.5-4.4 BAAAA  So. California             

 

O: 10JUL2020 01:30:23  35.1N  116.7W Ml=2.0  EMSC   SOUTHERN CALIFORNIA          

P:  7JUL2020 125344    34.6N  116.7W 2.5-4.8 BAAAA  So. California             

 

O: 10JUL2020 06:23:50  36.0N  117.4W ML=2.0  EMSC   CENTRAL CALIFORNIA           

P:  7JUL2020 125348    35.9N  117.7W 2.5-4.5 BAAAA  So. California              

 

O: 09JUL2020 08:37:09  36.4N  118.0W Ml=2.2  EMSC   CENTRAL CALIFORNIA

O: 10JUL2020 02:38:25  36.5N  118.0W Ml=2.1  EMSC   CENTRAL CALIFORNIA

O: 10JUL2020 04:47:14  36.5N  118.0W ML=2.2  EMSC   CENTRAL CALIFORNIA

O:  9JUL2020 08:36:00  36.4N  118.0W Ml=2.0  EMSC   CENTRAL CALIFORNIA           

P:  9JUL2020 125305    36.1N  118.1W 2.5-4.4 AAAAA  California/Nevada area     

 

O:  9JUL2020 13:34:24  36.8N  121.4W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P: 11JUL2020 125314    37.1N  121.5W 2.5-4.4 AAAAA  Central California         

 

O:  9JUL2020 08:27:52  37.5N  117.4W ml=2.6  EMSC   NEVADA                       

O: 09JUL2020 23:19:28  37.5N  117.4W ML=2.3  EMSC   NEVADA

P:  5JUL2020 125306    36.8N  117.5W 2.5-4.4 BAAAA  California/Nevada area     

 

O: 09JUL2020 12:17:04  38.1N  118.0W ML=2.2  EMSC   NEVADA

O: 09JUL2020 15:11:41  38.2N  118.0W ml=2.2  EMSC   NEVADA

O:  9JUL2020 16:42:19  38.2N  117.8W ML=2.1  EMSC   NEVADA                       

P: 11JUL2020 125309    38.4N  118.7W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 09JUL2020 20:43:04  38.8N  122.7W Md=2.4  EMSC   NORTHERN CALIFORNIA

O:  9JUL2020 21:00:16  38.8N  122.7W Md=2.1  EMSC   NORTHERN CALIFORNIA          

P:  5JUL2020 125315    38.7N  122.7W 2.5-4.4 BAAAA  Central California         

 

O:  9JUL2020 09:22:19  39.4N  117.3W ML=2.7  EMSC   NEVADA                       

P: 11JUL2020 125361    40.0N  117.9W 2.5-4.5 AAAAA  California/Nevada area     

 

ALASKA

 

O:  9JUL2020 15:48:41  52.1N  169.5W ML=3.2  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P:  6JUL2020 125400    51.9N  169.2W 3.5-5.3 BAAAA  Fox Islands, Aleutians     

 

O:  9JUL2020 09:41:26  57.5N  153.8W ML=3.2  EMSC   KODIAK ISLAND REGION, ALASKA 

P: 10JUL2020 125413    60.0N  153.5W 3.2-5.3 ACAAA  Central Alaska              

 

O:  9JUL2020 16:42:36  60.9N  151.0W ML=3.6  EMSC   KENAI PENINSULA, ALASKA      

P: 10JUL2020 125415    61.3N  150.9W 3.2-5.1 AAAAA  Central Alaska             

 

O:  9JUL2020 16:44:18  62.3N  148.7W mb=3.7  EMSC   CENTRAL ALASKA                

P:  9JUL2020 125414    61.2N  147.4W 3.2-4.9 ABAAA  Central Alaska             

 

No events of M>=3 were located in Alaska today.

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  9JUL2020 21:41:55  47.4N  117.9W Ml=2.0  EMSC   WASHINGTON                    

P: 10JUL2020 125373    47.7N  117.4W 2.0-4.3 AAAAA  Montana/Idaho              

 

O: 10JUL2020 20:50:21  47.6N  129.3W MB=3.5  ECAN Tofino, BC                     

P: 10JUL2020 125390    48.7N  129.0W 2.8-5.1 ABAAA  Vancouver Island area      

 

ROCKY MOUNTAINS REGION

 

O: 09JUL2020 11:26:36  44.3N  115.2W Ml=2.2  EMSC   SOUTHERN IDAHO

O: 09JUL2020 22:17:05  44.3N  115.2W Ml=2.3  EMSC   SOUTHERN IDAHO

O: 10JUL2020 02:04:44  44.3N  115.0W Ml=3.3  EMSC   SOUTHERN IDAHO

O: 10JUL2020 03:59:57  44.3N  115.0W ML=2.5  EMSC   SOUTHERN IDAHO

O: 09JUL2020 15:53:49  44.4N  115.2W Ml=2.3  EMSC   SOUTHERN IDAHO

O:  9JUL2020 09:21:29  44.2N  115.1W Ml=2.0  EMSC   SOUTHERN IDAHO               

P:  6JUL2020 125372    44.5N  115.1W 2.0-3.9 BAAAA  Montana/Idaho               

 

EASTERN U.S./CANADA

 

O:  9JUL2020 07:40:16  35.0N   84.4W mb=2.4  EMSC   GEORGIA, USA                 

O:  9JUL2020 15:07:52  35.9N   82.1W Md=2.0  EMSC   NORTH CAROLINA               

P:  5JUL2020 125322    37.0N   83.0W 2.0-4.3 BBAAA  Kentucky/Tennessee/NC      

 

O:  9JUL2020 14:05:26  36.7N   89.5W Md=2.3  EMSC   SOUTHEASTERN MISSOURI        

P:  7JUL2020 125327    36.5N   89.6W 2.0-4.3 AAAAA  New Madrid area            

 

O: 10JUL2020 06:06:11  48.4N   57.7W ML=3.3  EMSC   NEWFOUNDLAND, NFLD.-LAB., CANA

O: 10JUL2020 12:11:31  48.4N   57.7W MB=2.3  ECAN Stephenville Crossing, NL      

O: 10JUL2020 06:06:11  48.4N   57.7W MB=3.3  ECAN Stephenville Crossing, NL      

 

O: 10JUL2020 08:30:41  46.5N   75.7W MB=2.0  ECAN Mont-Laurier, QC                

O:  9JUL2020 06:07:16  47.1N   76.4W MB=1.5  ECAN Ferme-Neuve, QC                

P:  7JUL2020 125376    46.2N   72.7W 2.0-4.2 AABAA  New England                

 

O:  9JUL2020 05:02:41  72.1N   75.0W MB=2.8  ECAN Pond Inlet, NU                 

P:  6JUL2020 125425    73.3N   73.5W 2.5-4.1 BBAAA  Baffin/Davis Strait Canada 

 

HAWAII

 

O:  9JUL2020 15:45:40  19.4N  155.6W ML=3.2  EMSC   ISLAND OF HAWAII, HAWAII