MODERATE QUAKE SHAKES CENTRAL MEXICO

 

EARTHQUAKE SUMMARY FOR MAY 20, 2018

 

A moderate earthquake of M 5.2 was widely felt in Guerrero, Mexico today. NEIC reported it was felt with intensity up to IV as far as 600 km from the epicenter at Jalapa, Tabasco, Mexico and in the state of Mexico at Nezahualcoyotl. Lesser shaking of II-III was reported from Veracruz, Xadani, Oaxaca, Cuautitlan, Tlalnepntla, Coatepec, Ixtapaluca, Texmelucan, Tres Marias, Morelos, in Puebla at Cuanala, Cuautlancingo, Momoxpan, Puebla, Santa Maria la Alta; in Guerrero at Acapulco, Huitzuco, Chilpancingo and intensity V in Guerrero at Xalpatlahuac and Ometepec, Mexico. This is the strongest earthquake in Guerrero, Mexico in the past eight months. A similar M 5.2 hit south of this epicenter on March 20, 2018, the only such event of M>5 in this time period. No damage or casualties were reported with today's earthquake. Forecast 116717 had expected this activity was likely around May 15-18. This activity is located at the seventh node (51.4 degrees) from the M 6.8 in Bolivia of April 2 and from the Kilauea eruptions in Hawaii. Other activity at this node from Hawaii today included an M 2.4 in southern Texas and  a M 2.4 in Oklahoma.

 

O: 21MAY2018 02:33:33  17.1N   98.7W ML=4.5  EMSC   GUERRERO, MEXICO             

O: 21MAY2018 02:15:21  17.4N   98.4W mb=5.2  EMSC   GUERRERO, MEXICO             

P: 15MAY2018 116717    16.0N   98.0W 3.5-5.1 CBAAA  Oaxaca, Mexico             

P: 18MAY2018 116717    18.0N   97.0W 3.5-5.1 BAAAA  Oaxaca, Mexico              

 

A moderately strong aftershock of M 5.5 also shook the Mayotte region north of

Madagascar. NEIC reported maximum intensity in Mayotte of IV in Sada with V in Pamanzi, Dzaoudzi, Mamoudzou, Koungou, and II-III in Dembeni, Kanikeli, Mayotte. Also reported felt with intensity II in Madagascar at Antsirambazaha. A foreshock of M 5.3 earlier in the day shook the same area with similar intensities. This is part of a series which has shook the region for the past two week, but the M 5.5 is the strongest after an M 5.8 on May 15. The area had not experienced this type of seismicity in the past. Forecast 116878 expected this activity in mid-May. Like the eruption of Kilauea, also unprecedented in the past 100 years these events are located at 102 degrees from the M 6.8 in Bolivia of April 2 and were probably promoted by concentrated seismic energy from that source.

 

O: 20MAY2018 08:01:29  12.9S   45.7E Mw=5.3  EMSC   MAYOTTE REGION               

O: 21MAY2018 00:47:13  12.9S   45.7E mb=5.5  EMSC   MAYOTTE REGION               

P: 15MAY2018 116878    13.0S   44.0E 3.0-4.4 CABAA  Madagascar area            

 

An M 4.9-5.1 earthquake was strongly felt in al-Mazzunah, Sidi Bu Zayd, Tunisia today with intensity reported at VIII and in Qafsah, Tunisia with lesser shaking. This is the largest earthquake in Tunisia in the past half year. An M 4.6 occurred about 300 km northeast of this epicenter in Tunisia on March 8, 2018.  Forecast 116791 had expected this activity around May 19.

 

O: 21MAY2018 00:18:34  34.2N    9.7E mb=4.9  EMSC   TUNISIA                      

P: 19MAY2018 116791    37.0N    5.0E 3.0-4.6 ACCAA  Western Mediterranean      

 

Seismicity in the Kilauea eruption was reduced today as the lava was more fluid.

Earthquakes of M>=3 were felt with intensity II-III in Pahoa, Hawaii. A volcanic explosion at Kilauea registering M 4.9 was felt lightly in Hilo and Keaau, Hawaii. Forecast 116705 had expected today's activity around May 18.

 

O: 20MAY2018 14:30:42  19.3N  155.1W ML=3.5  EMSC   ISLAND OF HAWAII, HAWAII

O: 20MAY2018 21:52:29  19.4N  155.3W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII

O: 20MAY2018 21:50:07  19.4N  155.3W Mw=4.9  EMSC   ISLAND OF HAWAII, HAWAII

O: 20MAY2018 12:49:01  19.4N  155.5W ML=3.6  EMSC   ISLAND OF HAWAII, HAWAII

O: 20MAY2018 23:38:31  19.5N  154.9W ML=3.3  EMSC   HAWAII REGION, HAWAII        

P: 18MAY2018 116705    19.3N  155.3W 4.0-5.5 AAAAA  Hawaii                     

P: 18MAY2018 116705    19.5N  154.9W 3.0-4.6 AAAAA  Hawaii                     

 

 

The strongest earthquake in the U.S. or Canada outside Hawaii today was an M 4.6 off the coast of Oregon. NEIC reported it was lightly felt in Oregon at Bandon, Coos Bay, Gold Beach, Eugene, Salem, Clackamas. This is the largest earthquake off the coast of Oregon since an M 4.9 on January 28 and the third largest in the past seven months - an M 4.7 occurred November 24, 2017. Forecast 116820 had expected this event off the coast of Oregon was likely around May 18.

 

O: 20MAY2018 10:47:12  43.4N  126.7W mb=4.6  EMSC   OFF COAST OF OREGON          

P: 18MAY2018 116820    43.9N  128.4W 3.0-4.4 AAAAA  Off Coast of Oregon        

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: 20MAY2018 11:22:51  32.2N   48.4E mb=4.1  EMSC   WESTERN IRAN                 

P: 19MAY2018 116783    33.0N   46.0E 3.8-5.5 AABAA  So. Iran                   

 

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

 

INDONESIA AND PHILIPPINES

 

O: 20MAY2018 21:55:47   1.3S  120.4E ML=4.6  EMSC   SULAWESI, INDONESIA          

P: 16MAY2018 116691     1.0S  120.0E 4.0-5.7 BAAAA  Sulawesi area              

P: 21MAY2018 116659     0.0N  120.0E 4.0-5.4 ABAAA  Celebes Sea                

 

O: 20MAY2018 18:05:47   4.7N   96.1E mb=4.6  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 21MAY2018 116670     3.0N   97.0E 4.0-5.5 ABAAA  Nicobar Islands            

 

O: 20MAY2018 09:45:43   5.7S  142.0E mb=4.5  EMSC   NEW GUINEA, PAPUA NEW GUINEA 

P: 15MAY2018 116686     3.0S  142.0E 4.0-5.6 BCAAA  Papua New Guinea           

 

NEIC reported this earthquake of M 4.5 in Papua New Guinea was felt with intensity II-III in the area(s) of Tari, Southern Highlands, PNG.

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 20MAY2018 11:17:39   6.8N   73.0W mb=4.6  EMSC   NORTHERN COLOMBIA            

P: 16MAY2018 116663     7.0N   73.0W 4.0-5.8 BAAAA  Colombia                    

 

NEIC reported this earthquake of M 4.6 in Colombia was felt with intensity II-III in the area(s) of Colombia at Bucaramanga, Bogota and Envigado.

 

O: 20MAY2018 21:50:18  11.0N   62.0W mb=4.5  EMSC   OFFSHORE SUCRE, VENEZUELA    

P: 21MAY2018 116721    11.0N   62.0W 3.4-5.0 AAAAA  Windward Islands           

 

NEIC reported this earthquake of M 4.5 in Trinidad and Tobago was felt with intensity II-III in the area(s) of Mucurapo and Port of Spain, Trinidad and Tobago.

 

O: 20MAY2018 14:05:48  12.9N   88.9W ML=4.1  EMSC   OFFSHORE EL SALVADOR         

P: 19MAY2018 116713    12.0N   88.0W 3.5-5.2 AAAAA  Nicaragua                  

 

O: 21MAY2018 00:46:23  14.3N   93.8W ML=4.3  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 21MAY2018 01:13:47  14.4N   93.8W ML=4.1  EMSC   OFF COAST OF CHIAPAS, MEXICO 

O: 21MAY2018 01:38:26  14.7N   92.2W ML=4.5  EMSC   CHIAPAS, MEXICO              

P: 18MAY2018 116703    15.0N   92.0W 3.5-5.2 BAAAA  Guatemala                  

 

O: 20MAY2018 08:48:11  15.3N   94.6W ML=4.0  EMSC   OFF COAST OF OAXACA, MEXICO  

P: 20MAY2018 116699    16.0N   95.0W 3.5-5.2 AAAAA  Chiapas, Mexico            

 

O: 20MAY2018 11:05:45  17.0S   70.7W mb=4.4  EMSC   SOUTHERN PERU                

P: 20MAY2018 116883    18.0S   73.0W 4.0-5.6 AABAA  So. Peru/Bolivia           

 

O: 21MAY2018 02:33:33  17.1N   98.7W ML=4.5  EMSC   GUERRERO, MEXICO             

O: 21MAY2018 02:15:21  17.4N   98.4W mb=5.2  EMSC   GUERRERO, MEXICO             

P: 15MAY2018 116717    16.0N   98.0W 3.5-5.1 CBAAA  Oaxaca, Mexico             

P: 18MAY2018 116717    18.0N   97.0W 3.5-5.1 BAAAA  Oaxaca, Mexico             

 

O: 21MAY2018 06:55:36  18.6N   68.9W MD=3.2  EMSC   DOMINICAN REPUBLIC           

P: 19MAY2018 116718    19.0N   69.0W 3.4-5.3 AAAAA  Puerto Rico                

 

O: 20MAY2018 06:48:29  18.9N   67.5W Md=3.4  EMSC   PUERTO RICO REGION           

P: 15MAY2018 116718    19.0N   67.0W 3.4-5.1 BAAAA  Puerto Rico                

 

O: 20MAY2018 21:13:56  19.0N   65.4W MD=3.3  EMSC   PUERTO RICO REGION           

O: 20MAY2018 21:02:28  19.1N   65.5W MD=3.1  EMSC   PUERTO RICO REGION           

P: 20MAY2018 116718    19.0N   66.0W 3.4-5.0 AAAAA  Puerto Rico                

 

O: 21MAY2018 04:54:57  24.1S   66.9W mb=4.5  EMSC   JUJUY, ARGENTINA              

P: 14MAY2018 116891    24.0S   64.0W 4.0-5.6 CACAA  Argentina                  

 

O: 20MAY2018 19:39:04  31.2S   69.0W ML=4.1  EMSC   SAN JUAN, ARGENTINA          

P: 18MAY2018 116910    30.0S   69.0W 4.0-5.6 ABAAA  Coast Central Chile        

 

O: 21MAY2018 01:03:59  29.7S   68.4W mb=4.4  EMSC   SAN JUAN, ARGENTINA          

P: 18MAY2018 116892    29.0S   68.0W 4.0-5.7 BAAAA  Argentina                  

 

O: 20MAY2018 10:35:08  26.7N  110.9W ML=4.3  EMSC   GULF OF CALIFORNIA           

P: 21MAY2018 116726    24.0N  109.0W 3.5-4.9 ACBAA  Gulf of California         

 

 

AFRICA AND EUROPE

 

O: 20MAY2018 08:01:29  12.9S   45.7E Mw=5.3  EMSC   MAYOTTE REGION               

O: 21MAY2018 00:47:13  12.9S   45.7E mb=5.5  EMSC   MAYOTTE REGION                

P: 15MAY2018 116878    13.0S   44.0E 3.0-4.4 CABAA  Madagascar area            

 

O: 21MAY2018 00:18:34  34.2N    9.7E mb=4.9  EMSC   TUNISIA                      

P: 19MAY2018 116791    37.0N    5.0E 3.0-4.6 ACCAA  Western Mediterranean      

 

O: 20MAY2018 22:17:58  34.8N   24.1E mb=4.4  EMSC   CRETE, GREECE                

P: 18MAY2018 116751    34.0N   27.0E 3.0-4.6 AABAA  Crete                      

 

O: 20MAY2018 11:51:03  34.9N   15.1W mb=3.7  EMSC   MADEIRA ISLANDS, PORTUGAL REGI

 

O: 21MAY2018 01:09:23  37.5N   38.6E ML=4.2  EMSC   EASTERN TURKEY               

P: 19MAY2018 116788    37.0N   34.0E 3.5-5.2 AACAA  Turkey                     

 

EMSC reported an earthquake of M 4.0 in Italy was felt with intensity II-III in the area(s) of Italy at Camerino, San Severino Marche, Tolentino, Zona Cisterna, and Fabriano.

 

 

SOUTHWEST PACIFIC

 

O: 20MAY2018 20:29:20  15.4S  173.5W mb=4.5  EMSC   TONGA                        

P: 18MAY2018 116880    15.0S  173.0W 4.0-5.4 AAAAA  Samoa Islands              

P: 20MAY2018 116886    16.0S  173.0W 4.0-5.5 AAAAA  Tonga 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

 

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: 21MAY2018 02:17:35  46.4N  153.3E mb=4.6  EMSC   KURIL ISLANDS                

P: 17MAY2018 116829    49.0N  152.0E 3.5-5.6 BCAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 20MAY2018 11:47:04  31.3N  115.4W ML=3.6  EMSC   BAJA CALIFORNIA, MEXICO      

P: 19MAY2018 116774    31.9N  116.3W 2.5-4.8 AAAAA  So. California             

 

O: 20MAY2018 23:41:59  33.5N  116.8W ML=2.4  EMSC   SOUTHERN CALIFORNIA          

O: 21MAY2018 03:05:55  33.6N  116.6W ML=2.6  EMSC   SOUTHERN CALIFORNIA          

O: 20MAY2018 08:36:58  33.6N  116.9W ML=2.0  EMSC   SOUTHERN CALIFORNIA          

P: 18MAY2018 116776    33.4N  116.7W 2.5-4.8 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.6 in Southern California was felt with intensity II-III in the area(s) of Temecula, Palml Desert, Palm Springs and Mountain View, California.

 

O: 21MAY2018 02:21:06  35.3N  118.6W ML=2.4  EMSC   CENTRAL CALIFORNIA           

P: 16MAY2018 116782    35.6N  118.4W 2.5-4.6 BAAAA  So. California             

P: 18MAY2018 116782    35.0N  119.2W 2.5-4.9 BAAAA  So. California             

 

O: 21MAY2018 02:59:04  37.3N  115.0W ML=2.1  EMSC   NEVADA                       

P: 21MAY2018 116759    37.3N  114.9W 2.5-4.5 AAAAA  Nevada area                

 

ALASKA

 

O: 21MAY2018 04:42:10  56.3N  161.7W mb=4.1  EMSC   ALASKA PENINSULA             

P: 17MAY2018 116854    54.5N  161.8W 3.5-5.1 BBAAA  Unimak Islands, Aleutians  

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 20MAY2018 10:47:12  43.4N  126.7W mb=4.6  EMSC   OFF COAST OF OREGON          

P: 18MAY2018 116820    43.9N  128.4W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

ROCKY MOUNTAINS REGION

 

O: 20MAY2018 17:41:35  29.1N   97.8W mb=2.4  EMSC   SOUTHERN TEXAS               

 

O: 20MAY2018 19:34:15  31.6N  104.5W mb=2.6  EMSC   WESTERN TEXAS                

P: 20MAY2018 116773    32.6N  104.6W 2.0-4.0 AAAAA  SW U.S.A                   

 

O: 20MAY2018 23:04:27  36.8N  104.9W ML=2.7  EMSC   NEW MEXICO                   

P: 14MAY2018 116749    36.9N  105.1W 2.0-3.9 CAAAA  Colorado area              

 

EASTERN U.S./CANADA

 

O: 20MAY2018 22:58:00  35.5N   97.2W mb=2.4  EMSC   OKLAHOMA                     

P: 18MAY2018 116786    36.0N   97.0W 2.0-3.9 AAAAA  Southern Plains            

 

O: 20MAY2018 07:52:16  35.7N   89.7W MD=2.1  EMSC   TENNESSEE                    

P: 17MAY2018 116761    36.0N   89.0W 2.0-3.9 BAAAA  New Madrid area            

 

O: 20MAY2018 06:22:26  35.9N   83.8W MD=2.3  EMSC   EASTERN TENNESSEE            

P: 18MAY2018 116755    35.0N   82.0W 2.0-4.3 AABAA  Kentucky/Tennessee/NC      

 

O: 20MAY2018 04:55:19  47.8N   70.0W ml=1.2  ANSS   La Malbaie Canada            

P: 17MAY2018 116807    47.0N   70.0W 2.0-4.3 BAAAA  Maine                      

 

HAWAII

 

O: 20MAY2018 14:30:42  19.3N  155.1W ML=3.5  EMSC   ISLAND OF HAWAII, HAWAII

O: 20MAY2018 21:52:29  19.4N  155.3W ML=3.1  EMSC   ISLAND OF HAWAII, HAWAII

O: 20MAY2018 21:50:07  19.4N  155.3W Mw=4.9  EMSC   ISLAND OF HAWAII, HAWAII

O: 20MAY2018 12:49:01  19.4N  155.5W ML=3.6  EMSC   ISLAND OF HAWAII, HAWAII

O: 20MAY2018 23:38:31  19.5N  154.9W ML=3.3  EMSC   HAWAII REGION, HAWAII        

P: 18MAY2018 116705    19.3N  155.3W 4.0-5.5 AAAAA  Hawaii                     

P: 18MAY2018 116705    19.5N  154.9W 3.0-4.6 AAAAA  Hawaii