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MODERATE QUAKES SHAKE VANCOUVER ISLAND, CANADA

 

EARTHQUAKE SUMMARY FOR DECEMBER 9, 2018

 

A series of moderate to moderately strong earthquakes occurred in the region west of Vancouver Island, British Columbis today. The strongest of these was an M 7.6 which was lightly felt in the Vancouver Island region.It was accompanied by several of M4.5-5.5. No tsunamis or damages were reported nor were than anticipated. These earthquakes are located at 103-104 degrees from the M 7.5 in Minahasa of September, 2018 and the fourth node (90 degrees) from the strong quakes in the Loyalty Islands of December 5 and following and were probably promoted by energy from that source. Seismicity in the Loyalty Islands today included an M 4.9 and 5.0 earthquake but the immediate moderate aftershocks are largely over at this point. The Vancouver event of M 5.4 is the strongest in the region since the major shocks of October 22, 2018 which included an M 6.6, 6.8 and 6.5. Forecast 121860 had expected elevated seismicity in the Vancouver area around December 8.

 

O:  9DEC2018 17:48:39  49.0N  128.9W mb=4.8  EMSC   VANCOUVER ISLAND, CANADA REGIO

O: 09DEC2018 20:58:53  48.8N  129.3W ML=3.9  NRCA  249 km W   of Tofino

O: 09DEC2018 18:14:19  48.7N  129.2W ML=4.1  NRCA  243 km W   of Tofino

O: 09DEC2018 17:48:37  48.7N  129.2W ML=4.4  NRCA  243 km W   of Tofino

O: 09DEC2018 16:20:10  48.7N  129.2W ML=4.7  NRCA  245 km W   of Tofino

O:  9DEC2018 18:14:25  49.1N  128.3W mb=4.2  EMSC   VANCOUVER ISLAND, CANADA REGIO

O:  9DEC2018 16:20:14  49.1N  128.8W Mw=5.4  EMSC   VANCOUVER ISLAND, CANADA REGIO

P:  8DEC2018 121860    48.3N  128.5W 2.8-4.9 AAAAA  Vancouver Island area      

 

O:  9DEC2018 20:37:51  21.9S  169.2E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

O:  9DEC2018 07:03:06  21.9S  169.7E mb=4.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P:  9DEC2018 121918    21.0S  169.0E 4.0-5.6 AAAAA  Loyalty Islands            

 

A moderate aftershock of M 5.0 also occurred in the Anchorage, Alaska aftershock zone today where ut was felt with moderate intensity in the area of Anchorage. This is the strongest aftershock in the series in the past 9 days following an M 5.2 on December 1, 2018. The mainshock of M 7.0 occurred on November 30, 2018.Over all, however seismicity in the aftershock zone did not significantly increase today with just six events of M>=3 recorded.  Forecast 121886 had expected today's activity around December 9.

 

O:  9DEC2018 12:20:53  61.3N  149.9W ML=3.0  EMSC   SOUTHERN ALASKA              

O: 10DEC2018 06:41:28  61.4N  149.9W Ml=3.0  EMSC   SOUTHERN ALASKA              

O:  9DEC2018 19:00:29  61.4N  149.9W mb=5.0  EMSC   SOUTHERN ALASKA              

O:  9DEC2018 19:26:15  61.4N  150.1W ML=3.8  EMSC   SOUTHERN ALASKA              

O:  9DEC2018 15:40:00  61.4N  150.1W Ml=3.4  EMSC   SOUTHERN ALASKA              

O:  9DEC2018 07:03:36  61.5N  150.0W ML=3.9  EMSC   SOUTHERN ALASKA              

P:  9DEC2018 121886    61.3N  150.9W 3.2-5.3 AAAAA  Central Alaska             

 

A light earthquake of M 2.1 also occurred in the region of Illinois, U.S today. The only other earthquake located in Illinois during 2018 was an M 2.3 on September 2-. Today's event was not reported felt. Other earthquakes occurred in Eastern Tennessee with M 2.3 about three hours later. Forecast 121794 had expected the event in Illinois was likely around December 6.

 

O:  9DEC2018 11:00:13  38.1N   89.3W MD=2.3  EMSC   ILLINOIS                     

P:  6DEC2018 121794    38.0N   91.0W 2.0-4.1 BABAA  New Madrid area            

 

O:  9DEC2018 14:22:29  35.9N   83.8W MD=2.3  EMSC   EASTERN TENNESSEE            

P:  8DEC2018 121788    35.0N   82.0W 2.0-3.9 AABAA  Kentucky/Tennessee/NC      

 

An unusually large earthquake of M 4.7 also occurred today in the region of Puerto Rico. It was lightly felt in the epicentral area. This is the strongest earthquake in Puerto Rico since an M 4.9 on November 14, 2018 and prior to that an M 4.8 on August 18, 2017. The last event of significantly larger magnitude in Puerto Rico was an M 66.4 on January 13, 2014. Puerto Rico often sees an upsurge is seismic activity in mid-December, but the cause of this is not known. Forecast 121757 had expected today's activity was likely around December 6.

 

 

O:  9DEC2018 23:00:37  18.8N   66.4W mb=4.7  EMSC   PUERTO RICO REGION           

O:  9DEC2018 16:12:15  18.9N   65.1W Md=3.0  EMSC   VIRGIN ISLANDS REGION        

P:  6DEC2018 121757    20.0N   65.0W 3.0-4.6 BBAAA  Bahamas/No. Caribbean      

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:  9DEC2018 15:15:4.  24.1N  121.5E ML=5.1  TAI    Hualien, Taiwan              

P:  7DEC2018 121769    23.0N  121.0E 4.0-5.6 ABAAA  Taiwan                      

 

CWB reported the M 5.2 was felt with intensity V in Hualien; IV in Nantou and Taichung; III in Yilan; II in Taoyuan, Hsinchu, Changhua, Yunlin, Taitung and Taipei and I in Kaohsiung Counties, Taiwan.

NEIC reported this earthquake of M 5.1 in Taiwan was felt with intensity II-III in the area(s) of Hualien, Taipei, Taoyuan, Taiwan.

 

O:  9DEC2018 14:58:18  36.0N   70.2E mb=4.2  EMSC   HINDU KUSH REGION, AFGHANISTAN

O:  9DEC2018 15:39:35  36.6N   71.0E mb=4.3  EMSC   HINDU KUSH REGION, AFGHANISTAN

P:  8DEC2018 121786    36.0N   70.0E 3.8-5.2 AAAAA  Hindu Kush/Pakistan        

 

O: 10DEC2018 04:06:05  40.4N   63.2E mb=4.5  EMSC   WESTERN UZBEKISTAN           

P:  8DEC2018 121786    36.0N   70.0E 3.8-5.2 ACCAA  Hindu Kush/Pakistan        

 

INDONESIA AND PHILIPPINES

 

O: 10DEC2018 01:26:13   0.8N  125.3E mb=4.8  EMSC   MOLUCCA SEA                  

P:  8DEC2018 121705     2.0N  125.0E 4.0-5.4 ABAAA  Mindanao, Philippines      

 

O: 10DEC2018 03:00:30   3.7N  122.3E mb=4.4  EMSC   CELEBES SEA                   

P:  9DEC2018 121697     1.0N  122.0E 4.0-5.6 ACAAA  Celebes Sea                

 

O:  9DEC2018 12:23:43   9.0S  108.4E mb=4.5  EMSC   SOUTH OF JAVA, INDONESIA     

P:  7DEC2018 121910    10.0S  109.0E 4.0-5.6 AAAAA  So. of Java                 

 

O:  9DEC2018 10:33:23   9.6S  112.9E mb=4.6  EMSC   SOUTH OF JAVA, INDONESIA     

P:  8DEC2018 121910    10.0S  116.0E 4.0-5.4 AACAA  Sumbawa Island area        

P:  9DEC2018 121721     6.0S  113.0E 4.0-5.6 ACAAA  So. of Bali                

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 10DEC2018 05:03:38  10.1N  103.9W mb=4.6  EMSC   NORTHERN EAST PACIFIC RISE   

P:  4DEC2018 121745    10.0N  104.0W 3.5-5.5 CAAAA  Michoacan, Mexico          

P: 11DEC2018 121699     9.0N  103.0W 4.0-5.7 ABAAA  Central Pacific Ocean      

 

O:  9DEC2018 16:27:00   4.1S   80.3W ML=4.0  EMSC   PERU-ECUADOR BORDER REGION   

O:  9DEC2018 10:00:00   4.7S   78.6W ML=4.4  EMSC   PERU-ECUADOR BORDER REGION   

P:  6DEC2018 121711     4.0S   80.0W 4.0-5.6 BABAA  Ecuador                    

 

O:  9DEC2018 19:42:32  14.5N   92.4W ML=4.1  EMSC   OFFSHORE CHIAPAS, MEXICO     

P:  9DEC2018 121735    14.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico             

 

O:  9DEC2018 22:25:18  14.7N   60.1W ML=3.8  EMSC   MARTINIQUE REGION, WINDWARD IS

P:  6DEC2018 121742    15.0N   60.0W 3.0-5.6 BAAAA  Leeward Islands            

 

O:  9DEC2018 21:36:10  15.5N   95.1W ML=4.2  EMSC   OFFSHORE OAXACA, MEXICO       

P:  8DEC2018 121735    16.0N   95.0W 3.5-5.4 AAAAA  Chiapas, Mexico            

 

O:  9DEC2018 08:33:24  15.5N   96.0W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

O: 10DEC2018 05:17:09  15.5N   97.5W ML=4.0  EMSC   OFFSHORE OAXACA, MEXICO      

P:  8DEC2018 121752    15.0N   96.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O:  9DEC2018 18:48:23  18.0N   68.2W Md=3.1  EMSC   DOMINICAN REPUBLIC REGION    

P: 11DEC2018 121758    20.0N   68.0W 3.0-4.6 ABAAA  Bahamas/No. Caribbean      

 

O:  9DEC2018 07:18:19  18.2N  103.4W ML=3.3  EMSC   OFFSHORE MICHOACAN, MEXICO   

O:  9DEC2018 15:46:32  18.2N  103.4W ML=4.0  EMSC   OFFSHORE MICHOACAN, MEXICO   

P:  7DEC2018 121747    18.0N  104.0W 3.5-5.6 AAAAA  Michoacan, Mexico          

 

O:  9DEC2018 23:00:37  18.8N   66.4W mb=4.7  EMSC   PUERTO RICO REGION           

O:  9DEC2018 16:12:15  18.9N   65.1W Md=3.0  EMSC   VIRGIN ISLANDS REGION        

P:  6DEC2018 121757    20.0N   65.0W 3.0-4.6 BBAAA  Bahamas/No. Caribbean      

 

O:  9DEC2018 23:06:55  21.9S   68.3W mb=4.9  EMSC   ANTOFAGASTA, CHILE           

O:  9DEC2018 15:54:59  24.8S   70.6W mb=4.0  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

P:  8DEC2018 121915    24.0S   68.0W 4.0-5.9 AABAA  Argentina                  

 

O:  9DEC2018 20:42:42  23.9S   66.7W mb=4.5  EMSC   JUJUY, ARGENTINA             

P:  8DEC2018 121915    24.0S   68.0W 4.0-5.9 AAAAA  Argentina                  

 

O:  9DEC2018 15:54:59  24.8S   70.6W mb=4.0  EMSC   OFFSHORE ANTOFAGASTA, CHILE  

P:  8DEC2018 121915    24.0S   68.0W 4.0-5.9 AABAA  Argentina                  

 

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

 

AFRICA AND EUROPE

 

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

 

SOUTHWEST PACIFIC

 

O:  9DEC2018 21:52:24  20.8S  170.0E mb=5.0  EMSC   VANUATU                      

P:  9DEC2018 121918    21.0S  169.0E 4.0-5.6 AAAAA  Loyalty Islands            

 

O:  9DEC2018 12:36:44  21.1S  178.2W mb=4.6  EMSC   FIJI REGION                  

P:  5DEC2018 121926    22.0S  179.0W 4.0-5.5 BAAAA  Tonga Islands              

 

O: 10DEC2018 04:22:55  18.9S  177.7W mb=4.3  EMSC   FIJI REGION                  

P: 10DEC2018 121911    18.0S  178.0W 4.0-5.8 AAAAA  Tonga Islands              

 

O:  9DEC2018 20:37:51  21.9S  169.2E mb=5.1  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

O:  9DEC2018 07:03:06  21.9S  169.7E mb=4.6  EMSC   SOUTHEAST OF LOYALTY ISLANDS 

P:  9DEC2018 121918    21.0S  169.0E 4.0-5.6 AAAAA  Loyalty Islands            

 

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

 

OCEAN RIDGES

 

O: 10DEC2018 05:03:38  10.1N  103.9W mb=4.6  EMSC   NORTHERN EAST PACIFIC RISE   

P:  4DEC2018 121745    10.0N  104.0W 3.5-5.5 CAAAA  Michoacan, Mexico          

P: 11DEC2018 121699     9.0N  103.0W 4.0-5.7 ABAAA  Central Pacific Ocean      

 

O: 10DEC2018 03:07:13  41.0S   43.6E mb=4.9  EMSC   SOUTHWEST INDIAN RIDGE       

P: 11DEC2018 121940    41.0S   43.0E 4.0-5.4 AAAAA  So. Indian Ocean           

 

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:  9DEC2018 15:21:41  33.2N  137.9E mb=4.9  EMSC   NEAR S. COAST OF HONSHU, JAPAN

P:  5DEC2018 121789    34.0N  132.0E 3.5-5.1 BACAA  Kyushu, Japan area         

 

NEIC reported this earthquake of M 4.9 in Eastern Honshu, Japan was felt with intensity II-III in the area(s) of Kanagawa, Tokyo and Chiba Prefectures, Japan.

 

O:  9DEC2018 14:06:27  46.7N  153.0E mb=4.8  EMSC   KURIL ISLANDS                

P:  7DEC2018 121843    47.0N  155.0E 3.5-5.8 ABAAA  NE Pacific                 

 

O:  9DEC2018 10:53:18  48.4N  155.0E mb=4.5  EMSC   KURIL ISLANDS                

P:  7DEC2018 121843    47.0N  155.0E 3.5-5.8 ABAAA  NE Pacific                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 10DEC2018 00:21:45  33.5N  116.8W Ml=2.1  EMSC   SOUTHERN CALIFORNIA          

P:  5DEC2018 121810    33.7N  117.5W 2.5-4.5 AAAAA  So. California             

 

O:  9DEC2018 22:52:22  36.5N  121.1W Md=2.0  EMSC   CENTRAL CALIFORNIA           

P:  7DEC2018 121778    36.4N  121.0W 2.5-4.4 AAAAA  Central California          

 

NEIC reported this earthquake of M  2.6 in Northern California was felt with intensity II-III in the area(s) of Port Costa, Vallejo, Benicia, Pinole, Martinez, and El Centro among other communities in California.

 

O: 10DEC2018 04:29:23  38.4N  122.6W Md=2.4  EMSC   NORTHERN CALIFORNIA          

O:  9DEC2018 13:15:04  38.8N  122.7W Md=2.8  EMSC   NORTHERN CALIFORNIA          

O: 10DEC2018 06:22:13  38.8N  122.8W Md=2.3  EMSC   NORTHERN CALIFORNIA          

O:  9DEC2018 12:10:17  38.8N  122.8W Md=2.4  EMSC   NORTHERN CALIFORNIA          

P: 11DEC2018 121781    38.7N  122.7W 2.5-4.4 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 Middletown and Calistoga, California.

 

 

ALASKA

 

O:  9DEC2018 12:44:49  56.4N  148.5W Ml=3.2  EMSC   GULF OF ALASKA               

P:  7DEC2018 121892    55.0N  149.0W 3.0-4.6 AAAAA  Gulf of  Alaska            

 

O:  9DEC2018 12:20:53  61.3N  149.9W ML=3.0  EMSC   SOUTHERN ALASKA              

O: 10DEC2018 06:41:28  61.4N  149.9W Ml=3.0  EMSC   SOUTHERN ALASKA              

O:  9DEC2018 19:00:29  61.4N  149.9W mb=5.0  EMSC   SOUTHERN ALASKA              

O:  9DEC2018 19:26:15  61.4N  150.1W ML=3.8  EMSC   SOUTHERN ALASKA              

O:  9DEC2018 15:40:00  61.4N  150.1W Ml=3.4  EMSC   SOUTHERN ALASKA              

O:  9DEC2018 07:03:36  61.5N  150.0W ML=3.9  EMSC   SOUTHERN ALASKA              

P:  9DEC2018 121886    61.3N  150.9W 3.2-5.3 AAAAA  Central Alaska              

 

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O:  9DEC2018 17:48:39  49.0N  128.9W mb=4.8  EMSC   VANCOUVER ISLAND, CANADA REGIO

O: 09DEC2018 20:58:53  48.8N  129.3W ML=3.9  NRCA  249 km W   of Tofino

O: 09DEC2018 18:14:19  48.7N  129.2W ML=4.1  NRCA  243 km W   of Tofino

O: 09DEC2018 17:48:37  48.7N  129.2W ML=4.4  NRCA  243 km W   of Tofino

O: 09DEC2018 16:20:10  48.7N  129.2W ML=4.7  NRCA  245 km W   of Tofino

O:  9DEC2018 18:14:25  49.1N  128.3W mb=4.2  EMSC   VANCOUVER ISLAND, CANADA REGIO

O:  9DEC2018 16:20:14  49.1N  128.8W Mw=5.4  EMSC   VANCOUVER ISLAND, CANADA REGIO

P:  8DEC2018 121860    48.3N  128.5W 2.8-4.9 AAAAA  Vancouver Island area      

 

O: 10DEC2018 23:01:41  53.1N  132.8W ML=2.3  NRCA  69 km W   of Sandspit         

P:  6DEC2018 121865    53.0N  132.0W 3.0-5.5 BAAAA  British Colombia           

 

ROCKY MOUNTAINS REGION

 

O:  9DEC2018 18:40:32  43.3N  110.2W Ml=2.4  EMSC   WYOMING                      

P:  4DEC2018 121862    43.2N  111.0W 2.0-3.9 BAAAA  Yellowstone/Wyoming         

 

O:  9DEC2018 22:12:59  44.6N  114.3W Ml=2.1  EMSC   SOUTHERN IDAHO               

P: 11DEC2018 121840    44.4N  114.1W 2.0-4.1 AAAAA  Montana/Idaho              

 

EASTERN U.S./CANADA

 

O:  9DEC2018 14:22:29  35.9N   83.8W MD=2.3  EMSC   EASTERN TENNESSEE            

P:  8DEC2018 121788    35.0N   82.0W 2.0-3.9 AABAA  Kentucky/Tennessee/NC      

 

O:  9DEC2018 21:51:17  36.3N   97.5W mb=2.5  EMSC   OKLAHOMA                     

P:  7DEC2018 121819    37.0N   96.0W 2.0-4.1 ABBAA  Southern Plains             

 

O:  9DEC2018 11:00:13  38.1N   89.3W MD=2.3  EMSC   ILLINOIS                     

P:  6DEC2018 121794    38.0N   91.0W 2.0-4.1 BABAA  New Madrid area            

 

O:  8DEC2018 05:45:51  49.1N   67.6W ML=2.3  NRCA  26 km N from Matane           

P:  7DEC2018 121838    49.3N   67.5W 2.0-3.9 AAAAA  Maine                      

 

O:  8DEC2018 05:30:35  70.3N   71.2W ML=1.9  NRCA  98 km W from Clyde River      

P: 11DEC2018 121897    71.0N   75.0W 2.5-4.1 BAAAA  Baffin/Davis Strait Canada 

 

HAWAII

 

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