MODERATE QUAKES SHAKE HAWAII AND INDIANA

 

EARTHQUAKE SUMMARY FOR JUNE 17, 2021

 

The strongest earthquake in the U.S. or Canada today was an M 4.5 in Hawaii. It was followed by a strong series of minor aftershocks. The mainshock was reported by NEIC to have been felt throughout much of southern Hawaii Island with intensity III in Hawaii National Park, Pahala, Naalehu, Volcano, Captain Cook, Mountain View, Pahoa, Hilo, Kurtistown and Holualoa. The epicenter is near Mount Kilauea and may represent a reinvigoration of volcanism at this time. NEIC reported aftershocks of M 3.5 in Hawaii was felt with intensity II-III in the area(s) of Hawaii at Volcano, Naalehu, Captain Cook, Hilo, Kailua Kona, Kamuela and Wakoloa. Today's event is the strongest in Hawaii since an M 4.6 on July 27, 2020. Seismicity in Hawaii often is enhanced during summer months and some of this can be related to tropical storms in the north Pacific during this season. The first Tropical Cyclone in the North Pacific - TS  Carlos was active today and may have helped promote today's Hawaiian activity. Forecast 134611 had expected a moderate quake was possible in Hawaii around June 17.  These events followed an  M 4.5 on June 3, 2021. When that event occurred this summary noted it as:

 

"Hawaii is at the seventh node from the M 8.1 in the Kermadec Islands of March 4 and was probably promoted by energy from that source. And, like the event is Central Alaska of M 6.1 two days ago is near 104 degrees from the M 6.7 in Sumatra of May 14 and was probably also promoted from that epicenter. Qinghai China is at the fourth node from Hawaii (90 degrees)." (June 3, 2021)

 

The last earthquake in Hawaii of larger magnitude was an M 4.7 on January 1, 2021.

 

Forecast 134611 had expected enhanced seismicity in Hawaii was like around June 17.

 

O: 18JUN2021 02:32:04  19.4N  155.5W mb=4.4  EMSC   ISLAND OF HAWAII, HAWAII

O: 18JUN2021 03:00:51  19.3N  155.4W ML=3.7  EMSC   ISLAND OF HAWAII, HAWAII     

P: 17JUN2021 134611    18.8N  155.2W 3.0-4.4 AAAAA  Hawaii                      

 

A light to moderate earthquake of M 3.8 in the region of Indiana today continued the enhanced seismicity in the central and eastern U.S. observed over the past three days. Today's event was reported by NEIC with maximum intensity VI in Indiana at Hillsdale; V in Kingman; IV in Dana, Marshall, Rockville, Montezuma and III in Bloomingdale, Cayuga, and in Illinois at Rosedale and Clinton among others. It was reported lightly felt as far as Texas, Massachusetts, Florida, Maine, North Dakota, Minnesota, Ontario Canada along with most of the remaining states and provinces of eastern U.S. and Canada. The total eclipse of the sun of June 10, 2021 was visible in most of the region where today's event was felt and may have been a promoter of this seismicity as reported in earlier issues of this summary:

 

"The new moon arrives on June 10 at 10:53 UT. Longitudes which are at local solar midnight at this hour include those near 160 West while those at local solar noon are near 20 East longitude. These include areas from the northern Kermadec/Tonga/Samoa arc, Hawaii and Alaska and the Aleutians in the west and Central Europe and Africa in the east. These areas are most likely to see tidal enhancement of seismicity with this new moon. Other areas could also see an increase in seismicity especially near local solar noon and midnight with a moderately strong to major quake possible in the next week. This is an annular solar eclipse. The maximum will be at 80N 66W and will be visible in northern and central Alaska and central and northern Canada. It will end north of Kamchatka, Russia and could trigger a large earthquake or volcanism in that area. In the U.S. it will be partially visible in Central Alaska, North and South Dakota through much of the eastern and northern U.S., Greenland and Canada beginning in the region of the Virgin Islands and Puerto Rico. A strong to major earthquake is likely within several days of this eclipse, most likely in eastern Asia or the Caribbean." (June 8-10, 2021)

 

Today's event in Indiana is the strongest within about 150 km of this epicenter since an M 3.8 on December 30, 2010 and an M 3.8 on September 12, 2004. The only event in this region of larger magnitude occurred about 200 km northwest of today's epicenter on June 28, 2004. The day before this earthquake occurred this summary noted in this regard:

 

 

"Unusual earthquakes in the interior of the U.S. or Canada often precede strong earthquakes elsewhere along the western edge of North America. We have emphasized this in the past and it is always a possibility that a strong earthquake is possible when a moderate intraplate earthquake occurs. In the past several days we have been discussing the unusual activity in the region of the northwest U.S. and southwest Canada. This is probably the most likely region for such an event should it occur at this time." (June 27, 2004)

 

"The earthquake of Mb 4.1 (Mblg 4.5) that occurred in northern Illinois this morning several hours before the Alaska earthquake was felt lightly with light damage from falling objects and cracked plaster. This event was the strongest in the Chicago area since a moderate event which occurred nearly 70 years ago on Nov. 12, 1934." (June 29, 2004)

 

The day after this, an M 7.0 occurred in southeastern Alaska. Some light earthquakes in southeastern Alaska over the past two days are in the vicinity of the large quake on June, 30, 2004 and may continue for several more days. Forecasts 134730 and 134667 had expected today's activity within about 250 km of this epicenter in mid-June. This epicenter is at 100-103 degrees from the M 7.4 in the M 7.4 in Qinghai, China of May 21, 2021 and was probably promoted by energy from that source. Other earthquakes at this distance from the Kermadec

Islands today included the largest earthquake of the day - an M 5.3 in the Fiji Islands as well as moderate quakes in the Kermadec Islands and light earthquakes in California. An M 5.0 occurred 19 years ago in Indiana on June 18, 2002, one of the largest on record in that State.

 

O: 17JUN2021 19:18:01  39.8N   87.3W Mw=3.8  EMSC   INDIANA                      

P: 11JUN2021 134730    40.0N   84.0W 2.0-3.9 CABAA  Ohio/Lake Erie             

P: 18JUN2021 134667    38.0N   91.0W 2.0-4.4 ABBAA  New Madrid area            

 

An unusual earthquake of M 4.6 occurred today in Lake Tanganyika today. NEIC reported it was felt with maximum intensity V in Bondo Nyanza, Kenya and IV in Kreka and Jinja, Uganda, and in Homa Bay, Kenya. Lesser shaking occurred in Kenya at Migon, Slaya, and in Uganda at Kampala, Kajansi, Makono, Entebbe.

Forecast 134585 had expected today's event in mid-June.

 

O: 17JUN2021 17:49:07   0.9S   33.4E mb=4.6  EMSC   LAKE VICTORIA REGION, UGANDA 

P: 11JUN2021 134585     2.0S   29.0E 3.0-4.4 CCCAA  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: 17JUN2021 23:30:46  19.3N   99.6E ML=3.5  EMSC   THAILAND                      

P: 17JUN2021 134637    20.0N   96.0E 4.0-5.4 AACAA  Myanmar                    

 

O: 17JUN2021 20:34:36  26.9N   92.7E mb=4.4  EMSC   ASSAM, INDIA                 

P: 19JUN2021 134638    27.0N   92.0E 4.0-5.5 AAAAA  Myanmar                     

 

O: 17JUN2021 14:19:36  34.7N   73.2E mb=4.9  EMSC   PAKISTAN                     

P: 14JUN2021 134662    35.0N   73.0E 3.8-5.3 BAAAA  Hindu Kush/Pakistan        

 

NEIC reported this earthquake of M 4.9 in Pakistan was felt with intensity II-III in the area(s) of Pakistan in Islamabad and Rawalpindi.

 

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

 

INDONESIA AND PHILIPPINES

 

O: 17JUN2021 21:31:16   0.3S  124.1E mb=4.6  EMSC   MOLUCCA SEA                  

P: 15JUN2021 134572     0.0N  124.0E 4.0-5.4 AAAAA  Mindanao, Philippines      

 

O: 17JUN2021 12:22:00   0.9S  134.3E ML=4.0  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 17JUN2021 134601     3.0S  134.0E 4.0-5.6 ACAAA  West Irian, PNG            

 

O: 17JUN2021 15:07:01   4.4S  102.2E ML=4.1  EMSC   SOUTHERN SUMATRA, INDONESIA  

P: 16JUN2021 134597     4.0S  102.0E 4.0-5.6 AAAAA  So. of Sumatera            

 

O: 17JUN2021 07:28:12   5.5N   95.2E ML=4.3  EMSC   NORTHERN SUMATRA, INDONESIA  

P: 19JUN2021 134575     5.0N   95.0E 4.0-5.5 AAAAA  Nicobar Islands            

 

O: 17JUN2021 17:52:27   7.7S  127.7E ML=4.5  EMSC   KEPULAUAN BARAT DAYA, INDONESI

P: 19JUN2021 134578     8.0S  129.0E 4.0-5.5 AAAAA  Banda Sea                  

 

O: 17JUN2021 19:32:06   9.0S  105.6E ML=4.1  EMSC   SOUTH OF JAVA, INDONESIA     

P: 15JUN2021 134789    10.0S  106.0E 4.0-5.6 AAAAA  So. of Java                

 

O: 17JUN2021 14:03:22   9.4N  126.6E ML=4.1  EMSC   MINDANAO, PHILIPPINES        

P: 14JUN2021 134564     9.0N  126.0E 4.0-5.5 BAAAA  Central Philippines        

 

O: 17JUN2021 14:46:13  11.5N  126.0E ML=4.1  EMSC   SAMAR, PHILIPPINES           

P: 17JUN2021 134614    11.0N  126.0E 3.5-4.9 AAAAA  Luzon, Philippines         

 

O: 17JUN2021 08:20:09  13.8N  144.9E mb=4.4  EMSC   GUAM REGION                  

P: 17JUN2021 134627    13.0N  144.0E 4.0-5.6 AAAAA  So. Marianas/Guam          

 

NEIC reported this earthquake of M 4.4 in Guam was felt with intensity II-III in the area(s) of Guam at Dededo, Barrigada and Santa Rita.

 

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

 

CENTRAL AND SOUTH AMERICA

 

O: 18JUN2021 03:17:23   1.2S   81.3W ML=4.6  EMSC   OFF COAST OF ECUADOR

O: 17JUN2021 08:11:44   1.5S   81.0W ML=4.1  EMSC   NEAR COAST OF ECUADOR

O: 17JUN2021 11:32:38   1.5S   81.0W ML=4.2  EMSC   OFF COAST OF ECUADOR

O: 17JUN2021 09:14:12   1.6S   81.0W ML=4.0  EMSC   OFF COAST OF ECUADOR

 

O: 17JUN2021 17:40:42   1.2S   81.1W ML=4.3  EMSC   OFF COAST OF ECUADOR         

P: 13JUN2021 134582     1.0S   81.0W 4.0-5.8 BAAAA  Ecuador                    

 

O: 18JUN2021 00:53:45   3.1S   83.7W ML=4.3  EMSC   OFF COAST OF NORTHERN PERU   

P: 13JUN2021 134582     4.0S   80.0W 4.0-5.6 BACAA  Ecuador                    

 

O: 17JUN2021 08:05:50  15.5N   92.3W ML=4.0  EMSC   CHIAPAS, MEXICO              

P: 18JUN2021 134606    15.0N   93.0W 3.5-5.4 AAAAA  Chiapas, Mexico            

P: 19JUN2021 134609    15.0N   92.0W 3.5-5.3 AAAAA  Guatemala                  

 

O: 17JUN2021 17:36:52  17.1N   94.8W ML=4.1  EMSC   OAXACA, MEXICO

O: 17JUN2021 23:24:55  16.8N   94.4W ML=4.0  EMSC   OAXACA, MEXICO               

P: 16JUN2021 134624    18.0N   95.0W 3.5-5.1 AAAAA  Oaxaca, Mexico             

 

O: 18JUN2021 02:54:55  18.0N   67.0W Md=3.2  EMSC   PUERTO RICO REGION           

O: 17JUN2021 09:23:42  18.2N   68.4W mb=4.4  EMSC   MONA PASSAGE, DOMINICAN REPUBLIC

O: 18JUN2021 06:35:41  18.9N   67.8W Md=3.4  EMSC   DOMINICAN REPUBLIC REGION

P: 16JUN2021 134625    18.0N   67.0W 3.4-5.2 AAAAA  Puerto Rico                 

 

NEIC reported this earthquake of M 4.4 in the Dominican Republic was felt with intensity II-III in the area(s) of the Dominican Republic at Boca de Yuma, Higuey, Otra Banda, La Romana, Santo Domingo, Las Terrenas and El Llano.

 

O: 18JUN2021 03:51:07  21.5S   69.7W mb=4.2  EMSC   ANTOFAGASTA, CHILE           

P: 19JUN2021 134796    21.0S   69.0W 4.0-5.4 AAAAA  Coast No. Chile            

 

O: 17JUN2021 08:49:37  40.1S   72.4W mb=4.2  EMSC   LOS LAGOS, CHILE             

P: 11JUN2021 134806    39.0S   73.0W 4.0-5.6 CBAAA  Central Chile              

 

NEIC reported this earthquake of M 4.2 in Los Lagos, Chile was felt with intensity II-III in the area(s) of Los Lagos, Chile at Rio Bueno, Valdivia and in Bariloche Rio Negro, Argentina.

 

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

 

AFRICA AND EUROPE

 

O: 17JUN2021 17:49:07   0.9S   33.4E mb=4.6  EMSC   LAKE VICTORIA REGION, UGANDA 

P: 11JUN2021 134585     2.0S   29.0E 3.0-4.4 CCCAA  Lake Victoria area         

 

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

 

SOUTHWEST PACIFIC

 

O: 17JUN2021 13:41:01  17.2S  172.2W Mw=5.3  EMSC   TONGA REGION                 

P: 15JUN2021 134790    16.0S  173.0W 4.0-5.4 ABAAA  Tonga Islands              

 

OCEAN RIDGES

 

O: 18JUN2021 04:57:40  59.7S   27.7W mb=4.6  EMSC   SOUTH SANDWICH ISLANDS REGION

P: 17JUN2021 134823    59.0S   26.0W 4.0-5.9 AAAAA  So. Sandwich Islands       

 

O: 17JUN2021 10:32:22   4.7S  106.3W mb=4.9  EMSC   CENTRAL EAST PACIFIC RISE

O: 17JUN2021 10:22:04   4.2S  105.5W mb=4.5  EMSC   CENTRAL EAST PACIFIC RISE    

P: 12JUN2021 134590     4.0S  104.0W 4.0-5.8 BABAA  No. East Pacific Rise      

 

 

ZEALANDIA AND AUSTRALIA REGION

 

O: 17JUN2021 12:42:16  30.2S  176.6W mb=4.9  EMSC   KERMADEC ISLANDS REGION      

P: 15JUN2021 134809    30.0S  178.0W 4.0-5.4 AAAAA  No. Kermadec Islands       

 

O: 17JUN2021 11:31:48  30.9S  180.0E ML=4.3  EMSC   KERMADEC ISLANDS REGION      

P: 14JUN2021 134812    31.0S  178.0E 4.0-5.4 BABAA  So. Kermadec Islands       

 

O: 17JUN2021 20:33:44  33.1S  179.9E ML=4.0  EMSC   SOUTH OF KERMADEC ISLANDS    

P: 14JUN2021 134812    31.0S  178.0E 4.0-5.4 BBBAA  So. Kermadec Islands       

 

JAPAN AND KURIL ISLANDS

 

O: 17JUN2021 14:00:36  48.0N  152.8E mb=4.4  EMSC   KURIL ISLANDS                

P: 17JUN2021 134737    45.0N  152.0E 3.5-5.7 ACAAA  So. Kurils                 

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 17JUN2021 11:42:56  31.5N  115.6W Ml=2.5  EMSC   BAJA CALIFORNIA, MEXICO      

O: 17JUN2021 07:48:03  31.8N  115.9W ML=3.6  EMSC   BAJA CALIFORNIA, MEXICO      

P: 16JUN2021 134680    31.7N  115.3W 2.5-4.4 AAAAA  So. California             

 

NEIC reported this earthquake of M 3.5 near Ocotillo, Southern California  was felt with intensity II-III in the area(s) of Ocotillo, Southern California at El Centro, Calexico and in Mexicali, Baja California.

 

O: 18JUN2021 03:27:29  33.7N  118.4W ML=2.6  EMSC   SAN PEDRO CHANNEL, CALIFORNIA

P: 18JUN2021 134684    33.6N  118.5W 2.5-5.1 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.7 in the Santa Monica Bay, California was felt with intensity II-III in the area(s) of the Santa Monica Bay, California at Hermosa Beach, Manhattan Beach, Redondo Beach, El Segundo, Lawndale, Torrance, Palos Verdes Peninsula.

 

O: 18JUN2021 00:44:09  34.0N  115.3W ML=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 18JUN2021 134683    33.7N  116.1W 2.5-4.6 AAAAA  So. California             

 

O: 18JUN2021 04:22:35  34.4N  116.9W Ml=2.7  EMSC   SOUTHERN CALIFORNIA          

P: 19JUN2021 134687    33.9N  116.9W 2.5-4.9 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.7 near Big Bear City, Southern California was felt with intensity II-III in the area(s) of Big Bear City, Southern California at Chino Hills.

 

O: 17JUN2021 17:13:17  36.4N  117.9W Ml=3.2  EMSC   CENTRAL CALIFORNIA

O: 17JUN2021 15:33:44  36.4N  117.9W Ml=2.0  EMSC   CENTRAL CALIFORNIA           

P: 16JUN2021 134647    36.2N  117.9W 2.5-4.9 AAAAA  California/Nevada area     

 

O: 18JUN2021 00:14:18  36.5N  121.2W Md=2.7  EMSC   CENTRAL CALIFORNIA           

P: 16JUN2021 134655    36.7N  121.4W 2.5-4.4 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.7 in Central California was felt with intensity II-III in the area(s) of Central California at Los Banos.

 

ALASKA

 

O: 17JUN2021 14:39:28  56.3N  149.2W ML=3.5  EMSC   GULF OF ALASKA               

P: 15JUN2021 134745    54.7N  148.9W 3.5-4.9 ABAAA  Alaska Peninsula            

 

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

 

O: 17JUN2021 23:08:46  42.3N  126.3W ML=2.9  EMSC   OFF COAST OF OREGON          

P: 16JUN2021 134728    42.1N  126.9W 3.0-4.4 AAAAA  Off Coast of Oregon        

 

ROCKY MOUNTAINS REGION

 

O: 17JUN2021 07:18:24  36.9N  112.6W Ml=2.1  EMSC   ARIZONA                      

P: 19JUN2021 134700    38.6N  112.7W 2.0-4.0 ABAAA  Utah area                  

 

O: 18JUN2021 01:24:17  38.8N  112.1W ML=2.8  EMSC   UTAH                         

P: 19JUN2021 134700    38.6N  112.7W 2.0-4.0 AAAAA  Utah area                  

 

O: 17JUN2021 17:54:20  44.4N  115.2W Ml=2.6  EMSC   SOUTHERN IDAHO

O: 17JUN2021 19:53:09  44.3N  115.2W Ml=3.0  EMSC   SOUTHERN IDAHO               

P: 17JUN2021 134717    44.6N  115.0W 2.0-4.0 AAAAA  Montana/Idaho              

 

O: 18JUN2021 04:03:24  31.7N  104.5W ML=2.6  EMSC   WESTERN TEXAS                

P: 17JUN2021 134677    31.6N  103.6W 2.0-4.2 AAAAA  SW U.S.A                   

 

EASTERN U.S./CANADA

 

O: 17JUN2021 15:09:08  36.2N   95.2W ML=2.1  EMSC   OKLAHOMA                     

P: 17JUN2021 134696    36.0N   97.0W 2.0-4.2 AABAA  Southern Plains            

 

O: 18JUN2021 03:10:15  28.5N  100.3W mb=3.1  EMSC   SOUTHERN TEXAS               

P:  9JUN2021 134356    28.0N   98.0W 3.0-4.6 CABAA  Southern Texas             

 

O: 17JUN2021 19:18:01  39.8N   87.3W Mw=3.8  EMSC   INDIANA                      

P: 11JUN2021 134730    40.0N   84.0W 2.0-3.9 CABAA  Ohio/Lake Erie             

P: 18JUN2021 134667    38.0N   91.0W 2.0-4.4 ABBAA  New Madrid area            

 

O: 17JUN2021 03:08:23  50.1N   90.4W MB=2.7  ECAN Allanwater Bridge, ON          

 

O: 16JUN2021 20:57:35  47.6N   70.1W MB=1.4  ECAN Charlevoix Seismic Zone        

O: 16JUN2021 08:58:48  49.1N   67.6W MB=1.6  ECAN Matane, QC                      

P:  8JUN2021 134443    47.0N   70.0W 2.0-3.9 AAAAA  Maine                      

 

HAWAII

 

O: 18JUN2021 02:32:04  19.4N  155.5W mb=4.4  EMSC   ISLAND OF HAWAII, HAWAII

O: 18JUN2021 03:00:51  19.3N  155.4W ML=3.7  EMSC   ISLAND OF HAWAII, HAWAII     

P: 17JUN2021 134611    18.8N  155.2W 3.0-4.4 AAAAA  Hawaii