EARTHQUAKES DAMAGING IN MINDANAO, PHILIPPINES

 

EARTHQUAKE SUMMARY FOR SEPTEMBER 20, 2014

 

The earthquake swarm in Mindanao, Philippines continued today with a series of event of M 3.5-4.0.  The strongest of the current series was of M 5.2. This is the strongest earthquake within 100 km of this epicenter since an M 5.5 on December 3, 2013. Forecast 83176 expected this activity was likely around September 25. It was apparently  this earthquake which caused the damage and injuries in the area. 

 

Phivolcs reported this as a series of seven earthquakes of M 3.0-4.0  in Kidapawan, Mindanao, Philippines were felt with intensity II-III in the area(s) of Kidapawan City. This series of earthquakes has destroyed at least 17 houses in Luayon and damaged 66 others while injuring three people in the area. The injuries were incurred from falling debris from the collapsing houses. Many other house area in danger of collapse. Phivolcs noted that some swarms such as this are followed by major earthquakes in the region. In Luayon residents were celebrating their town's foundation day when the largest earthquakes occurred. At least one church was damaged in this series of earthquakes.

 

 

O: 20SEP2014 13:30:00   6.9N  125.0E ML=3.7  PHIV   Kidapawan City

O: 20SEP2014 10:28:00   6.9N  125.1E ML=3.7  PHIV   Kidapawan City

O: 20SEP2014 07:43:00   6.9N  125.1E ML=3.9  PHIV   Kidapawan City

O: 20SEP2014 07:25:00   6.9N  125.1E ML=3.8  PHIV   Kidapawan City

O: 20SEP2014 07:04:00   6.9N  125.0E ML=3.8  PHIV   Kidapawan City

O: 20SEP2014 22:53:00   6.9N  125.1E ML=3.7  PHIV   Kidapawan City               

 

To the north of this and directly in the path of Tropical Storm Fung-Wong a moderate earthquake of M 4.6-4.8 shook Taiwan as that storm passed through the area. CWB reported this earthquake was felt with intensity III in Hualien, II in Taitung, Nantou, Taichung, Yunlin, Changhua, Taichung, and I in Chiayi, Nantou, Yilan and Miaoli Counties, Taiwan. This earthquake occurred while Tropical Storm Fung-Wong was passing over the epicenter and was probably triggered by that storm. No major damages or casualties were reported with this earthquake. The last event in Taiwan of M>4.8 occurred on July 17, 2014 with M 5.1. Forecast 82990 expected this event to the north of this epicenter around September 21.

 

O: 20SEP2014 21:14:03  23.5N  121.6E mb=4.6  ANSS   S of Hualian Taiwan          

O: 20SEP2014 21:14:04  23.6N  121.5E ML=4.8  TAI    Hualien, Taiwan              

P: 21SEP2014 82990     25.0N  122.0E 4.0-5.4 ABAAA  Ryukyu Islands              

 

The strongest earthquake of the day occurred in the Irian Jaya region of Indonesia with M 5.4-5.6. This epicenter is located about 10 degrees south of the geomagnetic equator, as the events in the Philippines are located on the geomagnetic equator. This activity is likely being promoted by ring currents and induced telluric currents following a strong geomagnetic storm which occurred over the past five days. This is a typical pattern for earthquakes following geomagnetic storms. Forecast 82951 had expected this within about 150 km of the epicenter in the  Irian Jaya area in mid-September. The M 5.4-5.6 is the largest event within 150 km of this epicenter since an M 5.8 on June 1, 2012. That event was probably  a regional aftershock of an M 6.7 to the south of this on April 21, 2012, part of a series of large global earthquakes which were apparently triggered by a major earthquake in Sumatra of M 8.2 on April 11, 2012. That series resulted in a reversal of USGS policy and led to the acceptance of long range triggering of earthquakes following other major earthquakes after decades of denial by the USGS. Current quiet seismic conditions in the world may be precursory to a strong series such as occurred in April 2012. A strong solar flare or a major earthquake could trigger such a seismic cascade. Currently most of the moderate to strong earthquakes are occurring along the geomagnetic equator following two moderately strong geomagnetic storms in the past week. This may be expected to continue for several more days.

 

O: 20SEP2014 18:27:21   1.0S  134.5E ML=5.4  AUS    Irian Jaya Region, Indonesia.

O: 20SEP2014 18:27:11   0.9S  134.1E ML=5.6  GSR  Irian Jaya region,  Indonesia

O: 20SEP2014 18:27:13   0.8S  134.3E mb=5.5  ANSS   ENE of Manokwari Indonesia   

P: 13SEP2014 82951      2.0S  133.0E 4.0-5.8 CABAA  West Irian, PNG            

 

The series of earthquakes which began in Nafpaktos, Greece continued today with the largest to date, an M 4.7-5.2. The last event of M>=5.2 to hit within  150 km of this epicenter occurred as an M 5.5 on Apirl 4, 2014. Forecast 83014 had anticipated this activity was likely around September 19.

 

NEIC reported this earthquake of M 5.2 in Greece was felt with intensity V in Rion, and IV in Patrai, Ahai, Greece and II in Napaktos, Greece. EMSC reported moderate to strong shaking in Patras, Nafpaktos, Aigio, Amaliada, Amfissa, and Aqios Vasilios, Greece. The M 4.0 was reported felt in Napaktos, Aquios Vasileios, Patras, Aigio, and Kato Achaia, Greece. Like the activity in Oklahoma which accelerated following the M 6.7 in Guam of September 17 these events in Greece are also at 103-105 degrees from the Guam epicenter. Seismic energy is concentrated at the surface following strong earthquakes in various distance zones. Among these is the distance 103-105 degrees along the surface where p- and s- waves return to the surface after reflecting and refracting off internal boundaries. These can help promote additional seismicity in these distance zones.

 

O: 21SEP2014 00:43:43  38.4N   21.8E mb=5.2  ANSS   WSW of Nafpaktos Greece      

O: 21SEP2014 00:43:41  38.3N   21.7E ML=4.7  EMS GREECE

O: 21SEP2014 01:13:27  38.4N   21.8E ML=4.0  EMS GREECE

O: 21SEP2014 01:13:27  38.4N   22.0E mb=4.3  ANSS   NNW of Kamarai Greece        

P: 19SEP2014 83014     39.0N   22.0E 3.0-4.6 AAAAA  No. Greece                 

 

The strongest earthquakes in the U.S. or Canada today were a pair of M 4.4's in the Aleutian Islands groups of the Fox and Andreanof Islands. These are remote epicenters and these events were not reported felt in this regions. The

Aleutians have been relatively quiet this month. The event in the Fox Islands was the largest within 150 km of that epicenter since events of M 4.7 on July 30

and February 23, 2014. Similar events of M 4.4 hit the area on August 16 and April 30, 2014. Forecast 83092 had expected this event was likely around September 22.  The M 4.4 in the western Andreanof Islands was the first of M>4.4 within 150 km of that epicenter since an M 4.9 on August 5, 2014. Later events of M 4.4 hit the area on August 8, and September 17, 2014. Forecast 83086 had expected this event around September 22.

 

O: 21SEP2014 02:26:08  51.3N  169.1W mb=4.4  ANSS   S of Nikolski Alaska         

P: 22SEP2014 83092     52.5N  169.2W 3.5-5.1 ABAAA  Fox Islands, Aleutians     

 

O: 20SEP2014 14:54:36  51.3N  178.4W mb=4.4  ANSS   Amatignak Island Alaska      

P: 22SEP2014 83086     50.2N  179.0W 3.5-4.9 ABAAA  Andreanoff Isls, Aleutians 

 

Lava from the eruption of Kilauea in Hawaii is continuing to flow. It is expected to cross

Apa'a Road

in less than 9 days and to cross highway 130 in about 20 days. While alternative routes are being constructed, this would strand thousands of people. Moderate seismicity also continued in Iceland with an event of M 4.8 among others in the area of the eruption of Bardarbunga.

 

O: 20SEP2014 17:11:46  64.6N   17.2W mb=4.8  ANSS   WNW of Hofn Iceland          

O: 21SEP2014 00:57:52  64.7N   17.5W mb=4.4  ANSS   SSE of Akureyri Iceland      

P: 21SEP2014 83111     65.0N   17.0W 3.0-4.4 AAAAA  Iceland 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: 20SEP2014 13:16:38  23.4N   94.7E mb=4.5  ANSS   SE of Mawlaik Burma          

P: 11SEP2014 82986     23.0N   95.0E 4.0-5.4 CAAAA  Myanmar                    

 

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

 

INDONESIA AND PHILIPPINES

 

O: 20SEP2014 11:10:11   7.5S  128.5E mb=4.7  ANSS   Kepulauan Barat Daya Indonesia

O: 20SEP2014 11:10:14   8.0S  128.5E ML=5.2  AUS    Banda Sea.                   

P: 17SEP2014 82932      8.0S  129.0E 4.0-5.4 BAAAA  Banda Sea                  

 

CENTRAL AND SOUTH AMERICA

 

O: 20SEP2014 22:35      4.7S   77.5W mb=4.4  IGP    E of Sta. Maria de Nieva - Ama

P: 17SEP2014 82942      6.0S   76.0W 4.0-5.5 BBBAA  No. Peru                   

 

O: 20SEP2014 06:49:59   3.0N   79.4W mb=4.8  ANSS   WNW of Mosquera Colombia     

P: 23SEP2014 83172      5.0N   78.0W 4.0-5.4 BBBAA  Colombia                   

 

O: 20SEP2014 13:08:06  10.6N   86.5W mb=4.5  ANSS   Sardinal Costa Rica          

P: 19SEP2014 82969     10.0N   86.0W 3.5-5.1 AAAAA  Nicaragua                  

 

O: 20SEP2014 15:35:01  19.0N   65.0W Md=3.2  ANSS   Amalie U.S. Virgin Islands   

P: 21SEP2014 82974     19.0N   66.0W 3.4-5.1 AAAAA  Puerto Rico                

 

O: 20SEP2014 05:12:14  14.0N   92.5W ML=4.8  UNAM   SUROESTE de CD HIDALGO, CHIS 

O: 20SEP2014 12:24:10  14.4N   92.6W ML=3.4  UNAM   SUROESTE de CD HIDALGO, CHIS 

O: 20SEP2014 10:11:45  13.9N   92.7W ML=3.9  UNAM    SUROESTE de CD HIDALGO, CHIS 

O: 20SEP2014 06:28:23  13.9N   93.0W ML=3.9  UNAM    SUROESTE de CD HIDALGO, CHIS 

O: 20SEP2014 08:06:29  14.8N   93.7W ML=3.2  UNAM    SUROESTE de MAPASTEPEC, CHIS 

O: 20SEP2014 03:51:50  14.7N   93.7W ML=3.9  UNAM    SUROESTE de MAPASTEPEC, CHIS 

O: 20SEP2014 04:12:59  14.7N   93.7W ML=4.5  UNAM    SUROESTE de MAPASTEPEC, CHIS 

O: 20SEP2014 09:30:46  14.7N   93.8W ML=3.6  UNAM    SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 09:07:40  14.7N   93.8W ML=3.7  UNAM    SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 04:40:51  14.7N   93.8W ML=3.8  UNAM    SUROESTE de MAPASTEPEC, CHIS 

O: 20SEP2014 04:44:27  14.7N   93.8W ML=3.8  UNAM    SUROESTE de MAPASTEPEC, CHIS 

O: 20SEP2014 04:56:47  14.7N   93.8W ML=3.8  UNAM    SUROESTE de MAPASTEPEC, CHIS 

O: 20SEP2014 05:57:22  14.7N   93.8W ML=3.8  UNAM    SUROESTE de MAPASTEPEC, CHIS 

O: 20SEP2014 06:23:22  14.7N   93.8W ML=3.8  UNAM    SUROESTE de MAPASTEPEC, CHIS 

O: 20SEP2014 09:32:01  14.7N   93.8W ML=3.8  UNAM    SUROESTE de MAPASTEPEC, CHIS 

O: 20SEP2014 03:33:47  14.7N   93.8W ML=3.8  UNAM    SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 07:14:38  14.7N   93.8W ML=3.8  UNAM    SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 09:41:17  14.7N   93.8W ML=3.8  UNAM    SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 08:01:43  14.7N   93.8W ML=3.9  UNAM    SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 11:13:57  14.7N   93.8W ML=3.9  UNAM    SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 05:06:28  14.7N   93.8W ML=4.0  UNAM    SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 03:29:26  14.7N   93.8W ML=4.1  UNAM    SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 08:08:46  14.7N   93.8W ML=4.2  UNAM    SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 06:54:38  15.1N   93.9W ML=3.7  UNAM   SUROESTE de PIJIJIAPAN, CHIS 

O: 20SEP2014 06:54:38  15.1N   93.9W ML=3.7  UNAM   SUROESTE de PIJIJIAPAN, CHIS 

P: 20SEP2014 82956     16.0N   93.0W 3.5-5.1 AAAAA  Chiapas, Mexico            

P: 22SEP2014 82955     14.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 20SEP2014 08:37:40  14.7N   94.1W ML=3.7  UNAM    SUROESTE de PIJIJIAPAN, CHIS

P: 22SEP2014 82955     14.0N   93.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 20SEP2014 10:25:49  19.1N   95.6W ML=4.0  UNAM   NORESTE de ALVARADO, VER     

P: 26SEP2014 83218     18.0N   97.0W 3.5-5.3 BBAAA  Oaxaca, Mexico             

 

O: 20SEP2014 11:36:12  15.8N   97.2W ML=3.3  UNAM   SUROESTE de PUERTO ESCONDIDO, OAX 

O: 20SEP2014 04:20:17  15.7N   97.3W ML=3.4  UNAM   SUROESTE de PUERTO ESCONDIDO, OAX 

O: 20SEP2014 10:00:15  15.7N   97.3W ML=3.5  UNAM   SUROESTE de PUERTO ESCONDIDO, OAX 

O: 20SEP2014 11:03:11  15.8N   97.3W ML=3.5  UNAM   SUROESTE de PUERTO ESCONDIDO, OAX 

O: 20SEP2014 11:06:55  15.7N   97.1W ML=3.3  UNAM   SUROESTE de PUERTO ESCONDIDO,

O: 20SEP2014 12:50:29  16.4N   98.3W ML=3.4  UNAM   OESTE de PINOTEPA NACIONAL, OA

P: 22SEP2014 82972     16.0N   99.0W 3.5-5.1 AAAAA  Oaxaca, Mexico              

 

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

 

AFRICA AND EUROPE

 

O: 21SEP2014 01:43:25  34.2N   25.1E mb=4.1  ANSS   S of Pirgos Greece           

P: 18SEP2014 83004     34.0N   26.0E 3.0-4.5 BAAAA  Crete                      

 

O: 20SEP2014 15:04:58  37.1N   13.5W ML=4.5  IGN    AZORES-CABO DE SAN VICENTE, SP

P: 20SEP2014 83011     37.0N   10.0W 3.5-5.1 AACAA  Morocco/Spain              

 

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

 

SOUTHWEST PACIFIC

 

O: 20SEP2014 07:15:46  17.6S  178.8W mb=4.9  ANSS   SE of Lambasa Fiji           

O: 20SEP2014 07:15:41  17.6S  179.0W ML=5.7  AUS    Fiji Islands Region.         

P: 15SEP2014 83133     17.0S  178.0W 4.0-6.4 BAAAA  Tonga Islands              

P: 22SEP2014 83133     19.0S  178.0W 4.0-6.4 ABAAA  Tonga Islands              

P: 22SEP2014 83133     19.0S  178.0W 4.0-5.4 ABAAA  Tonga Islands              

 

OCEAN RIDGES

 

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

 

NEW ZEALAND AND AUSTRALIA REGION

 

No earthquakes of M>=4 were recorded in the regions of New Zealand or Australia

today. GeoNet did not report any felt events in the area.

 

JAPAN AND KURIL ISLANDS

 

O: 20SEP2014 21:14:03  23.5N  121.6E mb=4.6  ANSS   S of Hualian Taiwan          

P: 21SEP2014 82990     25.0N  122.0E 4.0-5.4 ABAAA  Ryukyu Islands             

 

O: 20SEP2014 13:03:44  33.9N  137.1E mb=4.1  ANSS   SSE of Toba Japan            

P: 21SEP2014 83002     34.0N  139.0E 3.5-5.3 AABAA  Central/So. Honshu Japan   

 

O: 20SEP2014 08:04     42.9N  144.0E mM=3.7  NIED   KUSHIRO_REGION, Japan        

P: 15SEP2014 83051     42.0N  144.0E 3.5-5.5 BAAAA  Hokkaido, Japan            

 

JMA reported this earthquake of M 3.7 in Hokkaido, Japan was felt with intensity I in the area(s) of Hokkaido, Japan.

 

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

 

U.S./CANADA*

 

WESTERN U.S./CANADA

 

CALIFORNIA

 

O: 20SEP2014 21:40:15  34.1N  117.1W ml=2.2  ANSS   SE of Mentone California     

O: 21SEP2014 01:00:16  37.2N  117.4W ML=2.2  UUSN     Tokop, NV

O: 20SEP2014 21:40:15  34.1N  117.1W ML=2.2  NCSN    Yucaipa, CA

P: 20SEP2014 83027     33.9N  116.9W 2.5-4.8 AAAAA  So. California             

 

NEIC reported this earthquake of M 2.2 in Los Angeles, California was felt with intensity II-III in the area(s) of Los Angeles, California.

 

O: 20SEP2014 15:51:19  36.6N  121.2W md=2.4  ANSS   NE of Soledad California     

O: 20SEP2014 15:51:19  36.6N  121.2W ML=2.4  NCSN    Pinnacles, CA

P: 18SEP2014 82999     36.2N  120.8W 2.5-4.4 AAAAA  Central California         

 

NEIC reported this earthquake of M 2.4 in Central California was felt with intensity II-III in the area(s) of Livermore, California.

 

O: 21SEP2014 01:00:16  37.2N  117.4W ml=2.2  ANSS   SSW of Goldfield Nevada      

O: 21SEP2014 01:00:16  37.2N  117.4W ML=2.2  NCSN    Tokop, NV

P: 19SEP2014 82996     37.4N  117.2W 2.5-4.5 AAAAA  California/Nevada area     

 

O: 20SEP2014 16:27:31  37.5N  119.4W md=2.4  ANSS   Mammoth Lakes California     

O: 20SEP2014 16:27:31  37.5N  119.4W ML=2.4  NCSN    Oakhurst, CA

P: 24SEP2014 83245     38.7N  119.7W 2.5-4.4 BBAAA  California/Nevada area     

 

O: 20SEP2014 18:40:04  39.4N  120.2W md=2.2  ANSS   NNW of Truckee California    

O: 20SEP2014 18:40:04  39.4N  120.2W ML=2.2  NCSN    Truckee, CA

P: 27SEP2014 83249     39.4N  120.5W 2.5-4.4 CAAAA  Central California         

 

O: 20SEP2014 20:33:04  40.9N  124.3W ml=3.1  ANSS   NW of Eureka California      

O: 20SEP2014 20:33:04  40.9N  124.3W ML=3.1  NCSN    McKinleyville, CA

P: 13SEP2014 83067     40.6N  124.9W 2.5-4.6 CAAAA  Off Coast of No. Calif     

 

NEIC reported this earthquake of M 3.1 offshore Northern California  was felt with intensity II-III in the area(s) of Eureka, Arcata, Ferndale and Samoa, California.

 

O: 20SEP2014 09:45:48  41.9N  119.6W ml=2.5  ANSS   SE of Lakeview Oregon        

O: 20SEP2014 09:45:48  41.9N  119.6W ML=2.5  UUSN     Wimer Place, NV

O: 20SEP2014 05:12:30  41.9N  119.6W ML=2.5  UUSN     Wimer Place, NV

O: 20SEP2014 05:12:30  41.9N  119.6W ML=2.5  NCSN    Wimer Place, NV

O: 20SEP2014 09:45:48  41.9N  119.6W ML=2.5  NCSN    Wimer Place, NV

P: 24SEP2014 83295     40.5N  119.5W 2.5-4.4 BBAAA  California/Nevada area     

 

 

ALASKA

 

O: 21SEP2014 02:26:08  51.3N  169.1W mb=4.4  ANSS   S of Nikolski Alaska         

P: 22SEP2014 83092     52.5N  169.2W 3.5-5.1 ABAAA  Fox Islands, Aleutians     

 

O: 20SEP2014 14:54:36  51.3N  178.4W mb=4.4  ANSS   Amatignak Island Alaska      

P: 22SEP2014 83086     50.2N  179.0W 3.5-4.9 ABAAA  Andreanoff Isls, Aleutians 

 

O: 20SEP2014 06:40:54  58.4N  154.1W ml=3.1  ANSS   Larsen Bay Alaska            

P: 19SEP2014 83084     54.7N  156.9W 3.5-5.1 ACBAA  Alaska Peninsula           

 

O: 20SEP2014 08:12:33  67.6N  161.7W ml=3.0  ANSS   E of Noatak Alaska           

P:  2SEP2014 82863     67.0N  162.0W 3.0-4.6 DAAAA  Northern 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

 

No earthquakes of M>=2 were located in the Rocky Mountain region today.

 

EASTERN U.S./CANADA

 

O: 20SEP2014 19:54:00  35.6N   84.4W md=2.5  ANSS   NE of Sweetwater Tennessee   

O: 20SEP2014 19:54:00  35.6N   84.4W ML=2.5  CESN   Sweetwater, TN 

P: 12SEP2014 83008     35.0N   84.0W 2.0-3.9 CAAAA  Kentucky/Tennessee/NC      

 

O: 20SEP2014 07:10:19  36.8N   97.7W mb=3.2  ANSS   NNE of Medford Oklahoma      

O: 20SEP2014 07:10:19  36.8N   97.7W ML=3.2  CESN   Jefferson, OK 

P: 15SEP2014 83036     36.0N   97.0W 2.0-3.9 BAAAA  Southern Plains            

 

HAWAII

 

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