MODERATE EARTHQUAKE WIDELY FELT IN WYOMING, USA

 

EARTHQUAKE SUMMARY FOR AUGUST 27, 2016

 

A moderate earthquake of M 4.8 in the Grand Teton area of Wyoming was widely felt today. NEIC reported this earthquake was felt with maximum intensity IV in Wyoming at Bondurant and Cora,  and with lesser intensity  within about 200 km of the epicenter. Intensity II-III shaking was reported from Wyoming at Jackson about 35 km from the epicenter where 250 people reported felt effects to NEIC.

Other communities reporting light shaking in Wyoming included Daniel, Kelly, Etna, Grover, Wilson, Pinedale, Freedom, Dubois, Bedford, Thayne, Auburn, Alta, Moran, Moose, Cody, Lander, Yellowstong National Park, Green River, Thermopolis, Rock Springs and Evanston; and in Idaho at Idaho Falls, Victor, Driggs, Tetonia, Soda Springs, Idaho Falls, Ashton, Rexburg and Rigby, among others. Moderate earthquakes in this area are not unknown but the region has been quiet for an appreciable amount of time. This earthquake is the latest in a series of event along the front range of the Rocky Mountains which has included light earthquakes in Colorado near Trinidad, Pueblo and Greeley and appears to be migrating to the north with this event in Wyoming.

 

Forecast 100788 had expected today's earthquake was likely to occur within about 50 km of this epicenter around August 30. This is the strongest earthquake in  this region since an M 4.8 on August 5, 2010. The last of larger magnitude was an M 5.0 twelve years ago on January 7, 2004. A series of events occurred  in the area following the Northridge California event in January, 1994. This continued from February through April, 1994.

 

O: 27AUG2016 20:47:47  43.2N  110.3W Mw=4.8  EMSC   WYOMING                      

P: 30AUG2016 100788    43.2N  111.0W 2.0-4.8 BAAAA  Yellowstone/Wyoming        

 

More than 280 have now been confirmed dead in the M 6.2 and aftershocks in central Italy. Aftershocks today made two bridges impassable hindering relief efforts to some of the worst hit towns. In some cases aftershocks can by more dangerous than the mainshock as they affect already weakened structures.

 

The strongest earthquake of the day was an M 5.7-5.8 in Papua New Guinea.  This event was not reported felt in this area. Forecast 100643 had expected it within about 50 km of the epicenter around August 25.

 

O: 28AUG2016 07:23:53   2.8S  138.5E mb=5.7  EMSC   PAPUA, INDONESIA             

P: 25AUG2016 100643     3.0S  138.0E 4.0-6.1 AAAAA  West Irian, PNG            

 

A strong series of aftershocks followed an M 4.5 in the Virgin Islands, Caribbean today.  This area often sees seismic activation at the end of August and early September as Atlantic Hurricanes begin to be felt in the region. Today's series in the Dominican Republic where and M 4.1 aftershock also occurred, is not an exception to the hurricane-induced seismicity. As noted in the previous summary:

 

 

"An unusually large earthquake of M 4.5 occurred today in the Dominican Republic. NEIC reported this earthquake of M 4.5 in the Dominican Republic was felt with intensity II-III in the area(s) of Las Terrenas, Hato Mayor, Los Llanos, Santo Domingo, San Pedro de Macoris, El Carril, Jamao al Norte, Jarabacoa and Tireo, Dominican Republic and within about 150 km of the epicenter. This earthquake occurred as a storm north of the island attempted to become organized into a tropical depression. This summary had noted this storm in previous issues as:

 

 

"A tropical storm is occurring north of Puerto Rico, Caribbean. NHC gives this a 50% chance of becoming a named storm in the next two days. It may threaten the eastern and northern Caribbean islands with a moderate quake in the next two days. This far to the north, there is little danger of a strong associated earthquake. If the eye were further to the south, reduced normal stress on the Puerto Rico trench could promote a stronger earthquake or swarm in the region." (August 25-27, 2016)

 

 

O: 27AUG2016 14:51:55  18.0N   68.5W Md=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 25AUG2016 100669    19.0N   68.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 27AUG2016 09:56:32  19.2N   64.5W Md=3.5  EMSC   VIRGIN ISLANDS REGION        

P: 23AUG2016 100656    19.0N   64.0W 3.0-4.9 BAAAA  Leeward Islands            

P: 25AUG2016 100673    20.0N   65.0W 3.0-4.5 AAAAA  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: 28AUG2016 04:50:26  36.7N   77.1E mb=4.2  EMSC   SOUTHERN XINJIANG, CHINA     

P: 27AUG2016 100722    36.0N   75.0E 3.8-5.2 AABAA  Northern India             

 

O: 27AUG2016 19:44:23  50.4N  142.6E mb=4.6  EMSC   SAKHALIN, RUSSIA             

P: 19AUG2016 100523    49.0N  143.0E 3.5-5.4 CBAAA  So. Kurils                 

 

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

 

INDONESIA AND PHILIPPINES

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 27AUG2016 20:19      8.2S   76.3W mb=4.8  IGP    Tocache, Peru                

P: 25AUG2016 100624     9.0S   75.0W 3.5-5.0 AAAAA  Brazil                      

 

IGP reported this earthquake was felt with intensity II-III in Tocache, Peru

 

O: 27AUG2016 12:15     15.7S   71.7W mb=3.9  IGP    Maca, Chivay, Peru           

P: 26AUG2016 100828    15.0S   71.0W 4.0-5.4 AAAAA  Central Peru               

 

IGP reported this earthquake was felt with intensity II in  Maca, Chivay, Peru

 

O: 27AUG2016 20:14     38.1S   72.4W mb=4.9  GUC    Curanilahue, Lebu, Curacautin,

P: 24AUG2016 100858    37.0S   72.0W 4.0-5.4 BBAAA  Central Chile              

 

CSN reported this earthquake was felt with intensity IV in Curanilahue, Lebu, Curacautin, Padre las Casas, Temuco; III Concepcion, Tirua, Angol. Felt in Biobio and Araucania, Chile.

 

O: 27AUG2016 19:36     32.8S   71.6W mb=4.1  GUC    Puchuncavi, Quillota, Zapallar

P: 22AUG2016 100858    32.0S   72.0W 4.0-5.6 BAAAA  Central Chile              

 

CSN reported this earthquake was felt with intensity IV in  Puchuncavi, Quillota, Zapallar; III Valparaiso, Vina del Mar, Tiltil, Felt in Santiago and Valparaiso, Chile.

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

 

 

O: 27AUG2016 20:19:15   8.2S   76.2W mb=4.5  EMSC   CENTRAL PERU                 

P: 25AUG2016 100624     9.0S   75.0W 3.5-5.0 AAAAA  Brazil                     

 

O: 27AUG2016 23:13:50  11.5N   86.3W mb=4.4  EMSC   NEAR COAST OF NICARAGUA      

P: 31AUG2016 100663    10.0N   86.0W 3.5-5.6 BBAAA  Nicaragua                  

 

O: 27AUG2016 14:51:55  18.0N   68.5W Md=3.0  EMSC   DOMINICAN REPUBLIC REGION    

P: 25AUG2016 100669    19.0N   68.0W 3.4-4.9 AAAAA  Puerto Rico                

 

O: 27AUG2016 09:56:32  19.2N   64.5W Md=3.5  EMSC   VIRGIN ISLANDS REGION        

P: 23AUG2016 100656    19.0N   64.0W 3.0-4.9 BAAAA  Leeward Islands            

P: 25AUG2016 100673    20.0N   65.0W 3.0-4.5 AAAAA  Bahamas/No. Caribbean      

 

O: 27AUG2016 19:36:07  32.8S   71.7W mb=4.2  EMSC   OFFSHORE VALPARAISO, CHILE   

P: 22AUG2016 100858    32.0S   72.0W 4.0-5.6 BAAAA  Central Chile               

 

O: 28AUG2016 04:50:39  36.9S   73.4W ML=3.9  EMSC   OFFSHORE BIO-BIO, CHILE      

O: 27AUG2016 20:14:11  38.0S   73.3W Mw=4.6  EMSC   BIO-BIO, CHILE               

P: 24AUG2016 100858    37.0S   72.0W 4.0-5.4 BAAAA  Central Chile              

 

O: 27AUG2016 04:33:16  14.4N   93.8W ML=4.0  UNAM   SUROESTE de MAPASTEPEC, CHIS *

O: 27AUG2016 06:44:40  14.4N   93.8W ML=4.2  UNAM   SUROESTE de MAPASTEPEC, CHIS *

P: 24AUG2016 100649    14.0N   93.0W 3.5-5.3 BAAAA  Chiapas, Mexico            

 

O: 27AUG2016 11:46:26  15.0N   94.9W ML=4.0  UNAM   SUR de SALINA CRUZ, OAX *: 15.

P: 28AUG2016 100649    16.0N   94.0W 3.5-5.6 AAAAA  Chiapas, Mexico            

 

O: 27AUG2016 21:02:31  18.2N  102.6W ML=4.1  UNAM  NOROESTE de LA MIRA, MICH *: 18

P: 27AUG2016 100661    19.0N  102.0W 3.5-5.1 AAAAA  Michoacan, Mexico          

 

AFRICA AND EUROPE

 

O: 28AUG2016 01:04:31  39.3N   22.9E ML=3.8  EMSC   GREECE                       

P: 28AUG2016 100691    39.0N   23.0E 3.0-4.6 AAAAA  Aegean Sea                 

 

O: 27AUG2016 18:00:47  43.4N   40.9E ML=4.0  EMSC   GEORGIA (SAK'ART'VELO)       

P: 21AUG2016 100496    40.0N   41.0E 3.5-5.0 CCAAA  Caucasus/Caspian Sea       

P: 29AUG2016 100754    43.0N   44.0E 3.5-5.3 AACAA  Caucasus/Caspian Sea       

 

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

 

SOUTHWEST PACIFIC

 

O: 27AUG2016 17:39:20   6.4S  148.9E mb=4.7  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 23AUG2016 100633     5.0S  148.0E 4.0-5.5 BBAAA  New Ireland                

 

O: 27AUG2016 19:22:00  20.3S  177.7W mb=4.8  EMSC   FIJI REGION                  

P: 30AUG2016 100854    20.0S  176.0W 4.0-5.7 BABAA  Tonga Islands              

 

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

 

OCEAN RIDGES

 

O: 27AUG2016 08:59:13  29.2S   61.0E mb=4.8  EMSC   SOUTHWEST INDIAN RIDGE       

P: 27AUG2016 100864    33.0S   60.0E 4.0-5.4 ACAAA  So. Indian Ocean           

 

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

 

NEW ZEALAND AND AUSTRALIA REGION

 

O: 28AUG2016 00:31:34  33.7S  179.2W mb=4.6  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 22AUG2016 100865    33.0S  179.0W 4.0-5.6 CAAAA  So. Kermadec Islands       

P: 29AUG2016 100865    32.0S  179.0W 4.0-5.4 ABAAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 27AUG2016 13:46:28  36.1N  139.9E mb=4.0  EMSC   EASTERN HONSHU, JAPAN        

P: 29AUG2016 100724    35.0N  140.0E 4.0-5.7 ABAAA  Off East Coast Honshu      

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 28AUG2016 05:45:46  34.8N  118.8W ML=2.7  EMSC   SOUTHERN CALIFORNIA          

O: 27AUG2016 12:14:30  35.0N  118.5W ML=2.9  EMSC   SOUTHERN CALIFORNIA          

P: 27AUG2016 100737    35.4N  118.5W 2.5-4.4 BAAAA  So. California             

 

NEIC reported this earthquake of M 2.9 in Southern California was felt with intensity II-III in the area(s) of Idyllwild, Hemet, Oceanside and Carlsbad, California.

 

O: 27AUG2016 15:00:05  35.5N  120.8W MD=2.2  EMSC   CENTRAL CALIFORNIA           

P: 26AUG2016 100698    36.2N  120.8W 2.5-4.9 AAAAA  Central California         

P: 28AUG2016 100726    35.7N  121.2W 2.5-4.8 AAAAA  Off So. California         

 

NEIC reported this earthquake of M 2.2 in Central California was felt with intensity II-III in the area(s) of Templeton, Atascadero, and Paso Robles, California.

 

O: 27AUG2016 08:26:22  36.5N  121.0W MD=2.4  EMSC   CENTRAL CALIFORNIA           

O: 27AUG2016 08:19:35  36.6N  121.2W MD=2.1  EMSC   CENTRAL CALIFORNIA           

P: 26AUG2016 100698    36.2N  120.8W 2.5-4.9 AAAAA  Central California         

 

O: 28AUG2016 02:24:37  36.6N  121.2W ML=3.0  EMSC   CENTRAL CALIFORNIA           

P: 24AUG2016 100699    36.4N  121.0W 2.5-4.8 BAAAA  Central California         

 

NEIC reported this earthquake of M 2.9 in Central California was felt with intensity II-III in the area(s) of Tehachapi, Mojave, Valencia and Victorville, California.

 

O: 27AUG2016 09:26:27  38.8N  122.8W MD=2.4  EMSC   NORTHERN CALIFORNIA          

P: 23AUG2016 100701    38.7N  122.7W 2.5-4.4 AAAAA  Central California         

 

O: 27AUG2016 22:41:51  39.5N  122.0W MD=2.1  EMSC   NORTHERN CALIFORNIA          

P: 23AUG2016 100701    39.3N  122.8W 2.5-4.4 BAAAA  Central California         

 

O: 27AUG2016 12:36:19  39.7N  119.5W ML=2.4  EMSC   NEVADA                       

P: 30AUG2016 100695    39.1N  119.6W 2.5-4.8 BAAAA  California/Nevada area     

 

O: 27AUG2016 12:16:55  40.2N  121.1W MD=2.0  EMSC   NORTHERN CALIFORNIA          

P: 25AUG2016 100773    40.6N  122.4W 2.5-4.4 AAAAA  Northern California        

 

O: 27AUG2016 13:45:43  40.3N  124.5W ML=3.1  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 26AUG2016 100774    40.3N  124.7W 2.5-4.4 AAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.1 off the coast of northern California  was felt with intensity II-III in the area(s) of Ferndale, Eureka, McKinleyville, and Fort Bragg, California.

 

O: 27AUG2016 22:03:35  42.0N  119.7W ML=2.7  EMSC   NEVADA                       

P: 24AUG2016 100753    41.7N  119.7W 2.5-4.6 BAAAA  California/Nevada area     

 

 

ALASKA

 

O: 27AUG2016 16:39:26  52.1N  177.4E mb=4.0  EMSC   RAT ISLANDS, ALEUTIAN ISLANDS

P: 29AUG2016 100806    52.0N  176.0E 4.0-5.7 AAAAA  Rat Islands                

 

O: 27AUG2016 08:24:07  53.2N  166.7W Ml=4.5  EMSC   FOX ISLANDS, ALEUTIAN ISLANDS

P: 30AUG2016 100798    53.7N  167.0W 3.5-5.1 BAAAA  Fox Islands, Aleutians     

 

O: 27AUG2016 15:14:06  55.8N  158.4W mb=4.8  EMSC   ALASKA PENINSULA             

P: 29AUG2016 100790    54.8N  158.7W 3.5-5.1 AAAAA  Alaska Peninsula           

 

O: 28AUG2016 02:51:43  57.0N  150.1W Ml=4.1  EMSC   GULF OF ALASKA               

P: 28AUG2016 100813    60.0N  152.0W 3.2-5.1 ACAAA  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

 

O: 27AUG2016 20:47:47  43.2N  110.3W Mw=4.8  EMSC   WYOMING                      

P: 30AUG2016 100788    43.2N  111.0W 2.0-4.8 BAAAA  Yellowstone/Wyoming        

 

EASTERN U.S./CANADA

 

O: 27AUG2016 17:44:53  36.2N   89.4W MD=2.5  EMSC   TENNESSEE                    

P: 25AUG2016 100714    36.5N   89.6W 2.0-4.4 AAAAA  New Madrid area            

P: 26AUG2016 100715    37.0N   90.0W 2.0-4.0 AAAAA  New Madrid area            

 

NEIC reported this earthquake of M 2.5 in Tennessee was felt with intensity II-III in the area(s) of Cordova, Tennessee.

 

O: 27AUG2016 08:16:08  36.4N   97.7W Mw=3.6  EMSC   OKLAHOMA                     

P: 26AUG2016 100743    36.0N   97.0W 2.0-4.1 AAAAA  Southern Plains            

 

NEIC reported this earthquake of M 3.6 in Oklahoma was felt with intensity II-III in the area(s) of Enid, Oklahoma. Reports of intensity II shaking also came from Wichita, Kansas; Shelbyville, Texas and Lodgepole, Nebraska. These were probably mis-identified tremor especially the last two which are more than 600 km from the epicenter.

 

HAWAII

 

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