MODERATE QUAKE SHAKES DOMINICAN REPUBLIC
EARTHQUAKE SUMMARY FOR OCTOBER 1, 2022
A moderate earthquake of M 4.7 was widely felt in the Dominican Republic today. NEIC reported it was felt with intensity II-III in the Dominican Republic at Ramon Santana San Pedro de Macoria, El Seibo, Los Llanos, Santo Domingo, El Carril, San Cristobal and in Puerto Rico at Mayaguez and Aguas Buenas.
Hurricane Fiona passed over this epicenter a week ago and enhanced seismicity had been expected in the region as a result of energy from that storm as reported in earlier issues of this summary:
"TS Fiona continued today over Puerto Rico with winds up to 85 kts. Major flooding and complete power outage occurred on Puerto Rico today. It is expected to track to the west over the next several days reaching Puerto Rico in the next two days as a major storm. It could help promoted enhanced seismicity in the Virgin Islands, Leeward Islands and Puerto Rico around September 18-19." (September 18-22, 2022)
The only earthquake in the Dominican Republic in the past two years with M>4.7 was an M 5.0 about 50 km southeast of this on June 14, 2021. An M 4.6-4.7 hit about 300 km northwest of this epicenter on July 31, 2022. At the time this summary noted:
"A moderate earthquake of M 5.0 occurred today midway between Puerto Rico and the Dominican Republic. NEIC reported it was felt with intensity IV in Higuey, Dominican Republic and II-III in the Dominican Republic at Boca de Yuma, Otra Banda La Altagracia, La Romana, San Pedro de Marcoris, Los Llanos, and in Puerto Rico at Aguada, Cabo Rojo, Mayaguez and Anasco. It was preceded by an M 4.1 foreshock felt with intensity IV in Otra Banda and II in Santo Domingo, Dominican Republic. NEIC reported these earthquake in Puerto Rico and the Dominican Republic were felt with intensity II-III in the area(s) of Puerto Rico at Mayaguez and Gurabo. The solar eclipse of June 10 was first visible in this area of the northern Caribbean as previously discussed in this summary. In the previous issue the increased seismicity in this region had been noted as:
"Enhanced seismicity in the Virgin Islands and in areas of northeastern Asia is expected to continue for several more days. After several days of enhanced
regional activity today's was muted and seemed to be nearer the border of Puerto Rico and the Dominican Republic than in the Virgin Islands area." (June 13-14, 2021)
Today's event of M 5.0 is the strongest within about 100 km since an M 5.3 on February 3, 2019. The only other such event in the region in the past 9 years was an M 5.8 on May 28, 2014." (June 14, 2021)
The M 4.7 occurred within about half an hour of local solar noon and was likely promoted by strong tidal stresses which maximize near this hour. It follows an M 5.2 in the Virgin Islands two days ago and had been expected within about 50 km of this epicenter in forecast 147102 in early October. This activity is at 143-145 degrees from the earthquake of M 7.6 in New Guinea of September 10 and the M 7.0 in Luzon, Philippines of July 27, 2022 and may have been promoted by energy from those sources.
O: 1OCT2022 17:31:44 18.5N 69.1W mb=4.7 EMSC DOMINICAN REPUBLIC
O: 02OCT2022 04:39:06 19.1N 69.6W ML=3.1 EMSC DOMINICAN REPUBLIC
P: 4OCT2022 147102 18.0N 69.0W 3.4-5.2 BAAAA Puerto Rico
An earthquake of M 5.5 also occurred today off the coast of Chiapas, Mexico. NEIC reported it was felt with maximum intensity IV in Chiapas at Tuxtla, Gutierrez and II-III in Soyalo, San Cristobal. It was also lightly felt in Quetzaltenango, Guatemala, Oaxaca, Mexico and possibly as far as Mexico City. The last earthquake in Chiapas, Mexico of equal or larger magnitude in the past two years was an M 5.5 nearly 2 years ago on October 12, 2020. This earthquake occurred near local solar noon and may have promoted by strong tidal stresses. Forecast 147084 had expected today's activity was likely around October 5 within about 100 km in Chiapas. This earthquake is located at 120 degrees (node 3) from the M 7.0 in Luzon, Philippines (like the M 7.6 in Michoacan) and at 101 degrees from the Loyalty Islands M 7.0 of September 14 and may have been promoted by energy associated with those source.
O: 01OCT2022 16:36:54 15.1N 93.9W Mw=5.5 EMSC OFFSHORE CHIAPAS, MEXICO
O: 01OCT2022 18:54:34 14.9N 94.0W ML=4.2 EMSC OFF COAST OF CHIAPAS, MEXICO
O: 1OCT2022 20:03:11 14.8N 94.1W ML=4.3 EMSC OFF COAST OF CHIAPAS, MEXICO
P: 5OCT2022 147084 15.0N 95.0W 3.5-5.2 BAAAA Chiapas, Mexico
An M 5.5-5.7 was also felt in the area of Kyushu, Japan today. NEIC reported it was felt with maximum intensity V in Miyazaki, Japan in Nobeoka and IV in Miyazaki and IV in Kumamoto with lesser shaking in Kagoshima, Japan. Super Typhoon Nanmadol passed near this epicenter last week and may have helped promote seismicity in this region at this time as noted in previous issues of this summary:
"TYPH NANMADOL 2022-09-18 00:00 UT 30.7N 130.7E 115 kts Kyushu, Japan
Typhoon Nanmadol (TD 16W) continued today near Kyushu, Japan with winds up to 115 kts. It is expected to track to the northwest over the next several days reaching southern Kyushu, Japan about September 18 as a typhoon. A moderate to strong earthquake is possible as this storm passes through southern and central Japan." (September 20, 2022)
While an M 5.5 hit Kyushu on October 6, 2021, the last earthquake of larger or equal magnitude in Kyushu was an M 6.1 on May 9, 2019. At the time this summary noted in this regard:
"The strongest earthquake felt in the world today was an M 6.1-6.3 in Kyushu, Japan. It was preceded by an M 5.5 foreshock. NEIC reported maximum intensity VI in Miyazaki, Japan with V in Miyakonojo and IV in Hyuga and Hiji, Oita, Japan. Intensity II-III was felt in Kagoshima, Taketa, Kumamoto, Makurazaki, Oita and Beppu, Japan. JMA reported intensity V in Miyazaki; IV in Kumamoto, Oita, Kagoshima; and III in Hiroshima, Ehime, Fukuoka, Nagasaki, Japan. The M 5.5 foreshock was felt with intensity IV in Miyazaki and II-III in Kiyotake, Fukuoka and Iwakuni, Yamaguchi, Japan. No major damage occurred in either earthquake and a tsunami warning was not issued. The only other such event in the region of Kyushu within about 200 km of today's epicenter in the past three years was an M 6.3 on January 8, 2019. An M 7.0 hit the region on April 15, 2016 after a foreshock the day before of M 6.2. Further earthquakes in the area can be expected in the next several days." (May 9-10, 2019)
Forecast 147114 had expected this activity Kyushu was likely around October 2. Like moderate earthquake in the Mariana Islands (M 5.4); Bonin Islands (M 5.0); Crete (M 5.0) and the South Sandwich Islands (M 4.6) this epicenter is near 103
degrees from the M 7.6 in Michoacan, Mexico of September 19 and was probably promoted by energy from that source.
O: 1OCT2022 15:02:33 31.4N 131.4E Mw=5.7 EMSC KYUSHU, JAPAN
P: 2OCT2022 147114 29.0N 130.0E 4.0-5.4 ACBAA Kyushu Japan
The swarm in the Reykjanes Ridge began to dissipate today. Only three moderate earthquakes were located in this area today - of M 4.6, 4.6 and 4.4. These occurred near local solar noon and they may have been promoted by strong tidal stresses which maximize near this hour. This swarm began four days ago when the area was hit by the remnants of Hurricane Fiona and has continued more that 50 moderate quakes including two of M 5.7 and an M 5.9-6.0 yesterday.
Forecast 147238 had expected this activity in early October within about 100 km.
O: 01OCT2022 13:37:47 54.0N 35.1W mb=4.6 EMSC REYKJANES RIDGE
O: 01OCT2022 13:41:41 54.1N 35.1W mb=4.6 EMSC REYKJANES RIDGE
O: 1OCT2022 11:31:20 54.0N 35.1W mb=4.4 EMSC REYKJANES RIDGE
P: 2OCT2022 147238 53.0N 34.0W 4.0-5.4 AAAAA North Mid-Atlantic Ridge
Two earthquake of M 4.6 also occurred in the South Sandwich Islands region today. These also occurred near local solar midnight and noon and were likely
promoted by high tidal stresses. Forecasts 147046 and 147316 had expected enhanced seismicity in the South Sandwich Islands in late September or early
October within about 100 km of these epicenters. More moderate to large earthquakes are still likely in this area which is near 103 degrees from Michoacan, Mexico and where far-field aftershocks are likely at this time.
O: 1OCT2022 22:39:31 57.9S 25.6W mb=4.6 EMSC SOUTH SANDWICH ISLANDS REGION
P: 29SEP2022 147046 57.0S 25.0W 4.0-6.1 AAAAA So. Sandwich Islands
O: 1OCT2022 12:32:24 58.8S 23.1W mb=4.6 EMSC SOUTH SANDWICH ISLANDS REGION
P: 1OCT2022 147316 60.0S 23.0W 4.0-5.6 ABAAA So. Sandwich Islands
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 2OCT2022 03:47:18 24.0N 122.6E mb=4.7 EMSC TAIWAN REGION
O: 2OCT2022 03:47:17 24.0N 122.5E ML=4.3 TAI Hualien, Taiwan
P: 28SEP2022 146870 24.0N 122.0E 4.0-5.4 AAAAA Taiwan
CWB reported this earthquake was felt with intensity I in Hualien, Nantou and Taitung Counties, Taiwan.
INDONESIA AND PHILIPPINES
O: 1OCT2022 08:02:00 0.5N 126.6E ML=4.2 EMSC MOLUCCA SEA
P: 8OCT2022 147055 2.0N 126.0E 4.0-5.4 CBAAA Mindanao, Philippines
O: 1OCT2022 11:47:38 0.5S 123.1E ML=4.4 EMSC SULAWESI, INDONESIA
P: 2OCT2022 147055 0.0N 123.0E 4.0-5.4 AAAAA Mindanao, Philippines
O: 01OCT2022 13:20:43 2.6N 128.7E ML=4.2 EMSC HALMAHERA, INDONESIA
O: 2OCT2022 01:35:36 1.6N 128.3E mb=5.0 EMSC HALMAHERA, INDONESIA
P: 6OCT2022 147054 2.0N 128.0E 4.0-5.4 BAAAA Halmahera
O: 1OCT2022 13:50:17 3.8S 101.9E mb=4.8 EMSC SOUTHERN SUMATRA, INDONESIA
P: 7OCT2022 147076 5.0S 102.0E 4.0-5.5 CBAAA So. of Sumatera
O: 1OCT2022 10:25:19 4.3S 144.0E mb=4.9 EMSC NEW GUINEA, PAPUA NEW GUINEA
P: 30SEP2022 146811 6.0S 147.0E 4.0-5.4 ABCAA New Ireland
O: 1OCT2022 18:46:52 5.8S 149.6E mb=4.5 EMSC NEW BRITAIN REGION, P.N.G.
P: 3OCT2022 147069 6.0S 148.0E 4.0-5.4 AABAA New Ireland
O: 1OCT2022 19:41:36 6.8S 129.9E mb=4.6 EMSC BANDA SEA
P: 1OCT2022 147079 6.0S 131.0E 4.0-5.4 AAAAA West Irian, PNG
O: 01OCT2022 22:47:26 6.9S 106.2E ML=4.0 EMSC JAVA, INDONESIA
O: 1OCT2022 18:39:07 6.9S 106.0E ML=4.2 EMSC SUNDA STRAIT, INDONESIA
P: 30SEP2022 146817 7.0S 106.0E 4.0-5.7 AAAAA So. of Java
O: 01OCT2022 15:56:25 17.0N 147.1E mb=4.8 EMSC MARIANA ISLANDS REGION
O: 02OCT2022 02:14:45 17.0N 147.1E Mw=5.4 EMSC MARIANA ISLANDS REGION
O: 01OCT2022 16:19:26 17.1N 147.2E mb=4.6 EMSC MARIANA ISLANDS REGION
O: 1OCT2022 11:05:33 17.0N 147.1E mb=4.6 EMSC MARIANA ISLANDS REGION
P: 4OCT2022 147098 17.0N 146.0E 4.0-5.5 BAAAA No. Marianas
CENTRAL AND SOUTH AMERICA
O: 1OCT2022 16:39:30 10.7N 85.3W ML=4.2 EMSC COSTA RICA
P: 5OCT2022 147052 9.0N 84.0W 3.5-5.1 BBBAA Costa Rica
O: 1OCT2022 08:05:42 13.0N 91.3W mb=4.3 EMSC OFF THE COAST OF GUATEMALA
P: 3OCT2022 147088 14.0N 92.0W 3.5-5.2 AAAAA Guatemala
O: 01OCT2022 16:36:54 15.1N 93.9W Mw=5.5 EMSC OFFSHORE CHIAPAS, MEXICO
O: 01OCT2022 18:54:34 14.9N 94.0W ML=4.2 EMSC OFF COAST OF CHIAPAS, MEXICO
O: 1OCT2022 20:03:11 14.8N 94.1W ML=4.3 EMSC OFF COAST OF CHIAPAS, MEXICO
P: 5OCT2022 147084 15.0N 95.0W 3.5-5.2 BAAAA Chiapas, Mexico
O: 1OCT2022 20:31:55 15.6N 96.5W ML=3.9 EMSC OFFSHORE OAXACA, MEXICO
P: 3OCT2022 147100 15.0N 96.0W 3.5-5.1 AAAAA Oaxaca, Mexico
O: 2OCT2022 03:26:04 18.0N 66.5W Md=3.1 EMSC PUERTO RICO REGION
P: 1OCT2022 147102 19.0N 66.0W 3.4-5.1 AAAAA Puerto Rico
O: 1OCT2022 07:44:38 18.0N 67.0W Md=3.0 EMSC PUERTO RICO
O: 01OCT2022 09:01:34 18.7N 66.9W Md=3.7 EMSC PUERTO RICO REGION
P: 1OCT2022 147102 19.0N 66.0W 3.4-5.1 AAAAA Puerto Rico
P: 4OCT2022 147102 18.0N 67.0W 3.4-5.3 BAAAA Puerto Rico
O: 2OCT2022 01:54:44 18.0N 103.4W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
P: 2OCT2022 147094 18.0N 103.0W 3.5-5.4 AAAAA Michoacan, Mexico
O: 1OCT2022 17:31:44 18.5N 69.1W mb=4.7 EMSC DOMINICAN REPUBLIC
O: 02OCT2022 04:39:06 19.1N 69.6W ML=3.1 EMSC DOMINICAN REPUBLIC
P: 4OCT2022 147102 18.0N 69.0W 3.4-5.2 BAAAA Puerto Rico
O: 2OCT2022 00:16:23 19.7S 69.6W mb=4.2 EMSC TARAPACA, CHILE
P: 3OCT2022 147287 21.0S 69.0W 4.0-5.5 ABAAA Coast No. Chile
P: 28SEP2022 147024 20.0S 70.0W 4.0-5.8 BAAAA So. Peru/Bolivia
NEIC reported this earthquake of M 4.2 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile in Iquique, Tarapaca.
O: 1OCT2022 08:40:25 23.4S 66.8W mb=4.4 EMSC JUJUY, ARGENTINA
O: 2OCT2022 02:28:58 24.1S 66.8W ML=4.2 EMSC JUJUY, ARGENTINA
P: 28SEP2022 147021 24.0S 67.0W 4.0-5.6 BAAAA Argentina
AFRICA AND EUROPE
O: 2OCT2022 04:04:05 34.3N 26.2E mb=5.1 EMSC CRETE, GREECE
P: 1OCT2022 147121 35.0N 25.0E 3.0-4.8 AAAAA Aegean Sea
P: 29SEP2022 146888 34.0N 25.0E 3.0-4.9 BAAAA Crete
O: 2OCT2022 05:44:02 37.2N 4.1W ML=3.6 EMSC SPAIN
P: 26SEP2022 146893 37.0N 3.0W 3.5-5.2 CAAAA Morocco/Spain
O: 1OCT2022 09:27:52 39.6N 1.1W ML=2.1 EMSC SPAIN
P: 1OCT2022 147144 39.0N 1.0W 3.5-5.3 AAAAA Morocco/Spain
SOUTHWEST PACIFIC
O: 1OCT2022 13:43:34 14.5S 166.9E mb=4.9 EMSC VANUATU
P: 26SEP2022 147020 14.0S 167.0E 4.0-5.4 BAAAA Vanuatu Islands
O: 1OCT2022 23:41:28 15.0S 172.1W mb=4.9 EMSC SAMOA ISLANDS REGION
P: 28SEP2022 147010 15.0S 175.0W 4.0-5.6 BACAA Samoa Islands
O: 1OCT2022 19:35:24 24.9S 179.9E mb=4.5 EMSC SOUTH OF FIJI ISLANDS
P: 3OCT2022 147296 23.0S 179.0E 4.0-5.4 ABAAA Tonga/Fiji
P: 24SEP2022 147031 25.0S 179.0E 4.0-5.5 CAAAA Tonga/Fiji
OCEAN RIDGES
O: 01OCT2022 13:37:47 54.0N 35.1W mb=4.6 EMSC REYKJANES RIDGE
O: 01OCT2022 13:41:41 54.1N 35.1W mb=4.6 EMSC REYKJANES RIDGE
O: 1OCT2022 11:31:20 54.0N 35.1W mb=4.4 EMSC REYKJANES RIDGE
P: 2OCT2022 147238 53.0N 34.0W 4.0-5.4 AAAAA North Mid-Atlantic Ridge
O: 1OCT2022 22:39:31 57.9S 25.6W mb=4.6 EMSC SOUTH SANDWICH ISLANDS REGION
P: 29SEP2022 147046 57.0S 25.0W 4.0-6.1 AAAAA So. Sandwich Islands
O: 1OCT2022 12:32:24 58.8S 23.1W mb=4.6 EMSC SOUTH SANDWICH ISLANDS REGION
P: 1OCT2022 147316 60.0S 23.0W 4.0-5.6 ABAAA So. Sandwich Islands
ZEALANDIA AND AUSTRALIA REGION
O: 1OCT2022 15:26:26 30.7S 178.8W mb=4.9 EMSC KERMADEC ISLANDS, NEW ZEALAND
P: 27SEP2022 147036 30.0S 177.0W 4.0-5.6 BABAA No. Kermadec Islands
O: 1OCT2022 10:52:50 32.6S 178.3E ML=4.4 EMSC SOUTH OF KERMADEC ISLANDS
O: 1OCT2022 07:21:17 33.9S 179.3E mb=4.6 EMSC SOUTH OF KERMADEC ISLANDS
P: 8OCT2022 147308 34.0S 179.0E 4.0-5.7 CAAAA So. Kermadec Islands
JAPAN AND KURIL ISLANDS
O: 1OCT2022 12:44:48 28.7N 140.5E Mw=5.0 EMSC BONIN ISLANDS, JAPAN REGION
P: 1OCT2022 147153 30.0N 142.0E 4.0-5.6 ABAAA Off East Coast Honshu
P: 2OCT2022 147109 27.0N 141.0E 4.0-5.8 ABAAA Bonin Islands
O: 1OCT2022 15:02:33 31.4N 131.4E Mw=5.7 EMSC KYUSHU, JAPAN
P: 2OCT2022 147114 29.0N 130.0E 4.0-5.4 ACBAA Kyushu Japan
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 2OCT2022 06:20:27 35.7N 117.6W Ml=2.3 EMSC SOUTHERN CALIFORNIA
P: 2OCT2022 147169 35.8N 117.6W 2.5-4.6 AAAAA So. California
O: 1OCT2022 09:22:51 33.2N 115.5W Ml=2.0 EMSC SOUTHERN CALIFORNIA
P: 4OCT2022 147162 32.4N 115.8W 2.5-4.4 BAAAA So. California
O: 1OCT2022 18:40:01 37.5N 121.9W Md=2.1 EMSC SAN FRANCISCO BAY AREA, CALIF.
P: 6OCT2022 147131 37.4N 121.8W 2.5-4.8 BAAAA Central California
P: 28SEP2022 146882 37.7N 121.9W 2.5-4.5 BAAAA Central California
O: 2OCT2022 03:04:53 38.5N 122.7W Md=2.3 EMSC NORTHERN CALIFORNIA
P: 1OCT2022 147133 38.5N 122.7W 2.5-4.7 AAAAA Central California
P: 30SEP2022 146883 38.7N 122.7W 2.5-4.6 AAAAA Central California
O: 1OCT2022 07:14:45 40.5N 121.6W Md=2.5 EMSC LASSEN PEAK AREA, CALIFORNIA
P: 29SEP2022 146949 40.2N 121.2W 2.5-4.7 AAAAA Northern California
NEIC reported this earthquake of M 2.5 in Lassen Peak, California was felt with intensity II-III in the area(s) of Lassen Peak, California in Red Bluff, Mount Shasta and South Lake Tahoe.
ALASKA
O: 1OCT2022 17:09:26 54.1N 166.9W ML=3.2 EMSC FOX ISLANDS, ALEUTIAN ISLANDS
P: 7OCT2022 147234 52.5N 166.5W 3.5-5.1 CBAAA Fox Islands, Aleutians
O: 1OCT2022 10:43:42 54.5N 159.7W ml=3.4 EMSC SOUTH OF ALASKA
P: 29SEP2022 146985 54.7N 161.2W 3.5-5.3 AAAAA Unimak Islands, Aleutians
O: 1OCT2022 14:24:30 58.3N 133.5W ML=3.2 EMSC SOUTHEASTERN ALASKA
O: 01OCT2022 22:37:57 58.4N 133.6W ML=3.0 EMSC SOUTHEASTERN ALASKA
P: 4OCT2022 147232 58.3N 133.5W 3.0-5.3 BAAAA British Colombia
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: 02OCT2022 04:52:08 31.7N 104.6W ML=2.3 EMSC WESTERN TEXAS
O: 1OCT2022 12:49:21 31.7N 104.2W ML=2.9 EMSC WESTERN TEXAS
P: 4OCT2022 147158 31.7N 103.0W 2.0-3.9 BAAAA SW U.S.A
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 BAAAA SW U.S.A
O: 1OCT2022 20:39:19 44.7N 111.1W ML=2.4 EMSC WESTERN MONTANA
P: 3OCT2022 147223 44.6N 110.8W 2.0-3.9 AAAAA Yellowstone/Wyoming
O: 1OCT2022 22:18:12 44.7N 114.4W ML=2.4 EMSC SOUTHERN IDAHO
P: 1OCT2022 147196 44.4N 114.1W 2.0-4.3 AAAAA Montana/Idaho
P: 30SEP2022 146941 44.9N 113.4W 2.0-4.6 AAAAA Montana/Idaho
EASTERN U.S./CANADA
O: 1OCT2022 08:36:48 35.1N 95.6W ML=2.3 EMSC OKLAHOMA
P: 1OCT2022 147174 36.0N 97.0W 2.0-4.4 AABAA Southern Plains
O: 1OCT2022 12:30:27 36.7N 97.7W ML=3.0 EMSC OKLAHOMA
P: 1OCT2022 147174 36.0N 97.0W 2.0-4.4 AAAAA Southern Plains
HAWAII
O: 01OCT2022 16:11:23 19.3N 155.4W ML=3.2 EMSC ISLAND OF HAWAII, HAWAII
O: 01OCT2022 07:01:47 19.5N 155.6W ML=3.1 EMSC ISLAND OF HAWAII, HAWAII
O: 1OCT2022 10:36:25 19.2N 155.5W ML=3.3 EMSC ISLAND OF HAWAII, HAWAII
P: 3OCT2022 147112 19.3N 155.1W 4.0-5.4 AAAAA Hawaii area
NEIC reported this earthquake of M 3.5 in Hawaii was felt with intensity II-III in the area(s) of Hawaii in Hilo and Naalehu.
MODERATELY STRONG QUAKE SHAKES NORTHERN SUMATRA
EARTHQUAKE SUMMARY FOR SEPTEMBER 30, 2022
The strongest earthquakes in the world today were an M 6.0 in the Reykjanes Ridge, North Atlantic and an M 5.9-6.0 in northern Sumatra. The event in Sumatra was reported by NEIC to have been felt with intensity VII in Sibolga, Northern Sumatra and in Malaysia at Banting, Petaling, Kuala Lumput and Semenyih. An M 5.0 aftershock was felt with intensity IV in Rantauprapat, Northern Sumatra and possibly in Malaysia. BMG reported this earthquake was an M 6.0 felt with intensity VI in Tarutung, IV in Singkil, V in Spiahutar and III in Tapaktuan and Gunung Sitoli, Sumatra. The last earthquake of M>=5.8 within about 200 km of this epicenter was an M 6.1 on November 8, 2015 and prior to that an M 6.0 on May 19, 2008. This activity in Sumatra near the geomagnetic equator occurred at the height of today's geomagnetic storm and were probably promoted by energy associated with this storm as noted in the previous issues of this summary:
"The geomagnetic field saw quiet conditions today. The AP level was 7. High latitudes also saw active conditions with AP 8. Active to stormy conditions in the geomagnetic storm in the next three days may help promote additional enhancement of seismicity at high latitudes and near the geomagnetic equator today and in the next several days. " (September 30, 2022)
Forecast 146802 had expected this earthquake was likely in late September within about 25 km of this epicenter. This activity is at 144-149 degrees from the earthquakes in the Loyalty Islands of M 7.0 of September 14, 2022 and from the M 7.6 in Michoacan, Mexico of September 19, 2022 and had been expected as far-field activity from Mexico in this summary as:
"Areas likely to see far-field seismic enhancement from this earthquake include:
Outer shadow zone edge (141-148 degrees): Mexico to Minahassa, Sea of Bengal, Australia, SE Indian Ridge, Java, Andaman Islands, " (September 19-20, 2022)
It was also expected as a far field aftershock of the M 7.0 in the Loyatlty Islands of September 14, 2022 as:
"Node 5 (72 degrees)
Loyalty Islands to Sumatra, Kuril Islands, " (September 14, 2022)
O: 30SEP2022 19:54:30 2.0N 99.0E ML=4.6 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 20:01:59 2.0N 99.0E ML=4.1 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 19:28:43 2.1N 98.8E Mw=5.8 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 19:28:41 2.1N 98.9E Mw=6.0 BMG NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 19:28:43 2.1N 98.9E Mw=5.9 ANSS NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 19:28:43 2.1N 98.8E Mw=5.8 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 20:37:42 2.1N 99.0E mb=5.0 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 21:03:16 2.1N 99.0E ML=4.1 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 19:50:39 2.2N 98.9E mb=5.0 EMSC NORTHERN SUMATRA, INDONESIA
P: 22SEP2022 146802 2.0N 99.0E 4.0-5.5 CAAAA So. Sumatera
The earthquake of M 5.9-6.0 in the Reykjanes Ridge today is the strongest to date in the current series which has included two events of M 5.7 in the past four days in the region. It occurred at a high latitude near local solar midnight and was also probably promoted by effects from the geomagnetic storm (see above). The aftershock series in northern Sumatra ceased immediately after the M 5.9 in the Reykjanes Ridge. An M 5.0 in the Reykjanes aftershock series occurred within minutes of local solar midnight during the geomagnetic storm today. This sequenced had been noted in previous issues of this summary as:
"This is the strongest activity within about 200 km of this epicenter in the Reykjanes area since an M 6.8 on February 16, 1998. That was the only earthquake in this region with M>=5.7 in at least 30 years. Forecast 146979 had expected this activity was likely within about 25 km of this epicenter was likely around September 26. This activity is at 143 degrees from the M 7.0 in the Loyalty Islands of September 14, 2022 and at 101-105 degrees from the M 6.9 in Taiwan of September and the M 7.0 in Luzon, Philippines of July 27, 2022 and near the sixth node (60 degrees) from the M 7.6 in Michoacan Mexico of September 19 and was probably promoted by energy from those source." (September 26-27, 2022) This activity is located at 143-144 degrees from the M 7.0 in the Loyalty Islands of September 14 and at 102 degrees from the M 6.9 in Taiwan of September 18 and was probably promoted by energy from that source." (September 28-29, 2022)
O: 01OCT2022 01:18:53 53.8N 35.5W Mw=6.0 ANSS REYKJANES RIDGE
O: 30SEP2022 12:21:07 53.6N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 01OCT2022 01:18:53 53.8N 35.5W Mw=5.9 EMSC REYKJANES RIDGE
O: 01OCT2022 04:58:04 53.8N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 01OCT2022 02:06:09 53.9N 35.3W Mw=5.0 EMSC REYKJANES RIDGE
O: 30SEP2022 19:52:05 53.9N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 30SEP2022 12:50:09 54.1N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 30SEP2022 11:38:53 53.5N 35.3W mb=4.6 EMSC REYKJANES RIDGE
P: 26SEP2022 146979 54.0N 35.0W 4.0-5.7 BAAAA North Mid-Atlantic Ridge
An earthquake of M 5.3 also occurred near the equator in the Central Atlantic north of Ascension Island today. This is near the location of a tropical storm forming in the area and may have been promoted by energy associated with that storm. Forecast 146803 had expected activity within about 100 km of this epicenter would be enhanced at the end of September.
O: 1OCT2022 05:12:39 1.4S 15.3W Mw=5.3 EMSC NORTH OF ASCENSION ISLAND
P: 24SEP2022 146803 1.0S 16.0W 4.0-5.8 CAAAA Central Mid-Atlantic
Two M-class solar flares occurred today - an M2.9 (#6230) and an M1.3 (#6240) beginning about 16:11 UT and 1730 UT.
Flare # START MAX END CLASS DATE Flux (Jm-2)
6230 1611 1622 1633 M2.9 (September 30, 2022) 2.2E-02
6240 1730 1734 1745 M1.3 (September 30, 2022) 8.9E-03
The strongest seismicity in the western hemisphere today occurred as an M 5.2-5.3 preceded by an M 3.9 foreshock in the region of El Salvador. The M 3.9 occurred in the area of El Salvador at the beginning of flare 6230 while a moderate shock of M 5.2 occurred later with the beginning of flare 6240. These two event were located two minutes after the reported start of these flares and were probably triggered by SFE from these flares. The mainshock of M 5.2 occurred within minutes of local solar noon, a time when SFE are most seismo-effective. Forecast 146843 had expected this activity was likely within about 10-50 km at the end of September.
O: 30SEP2022 17:32:38 12.3N 88.3W Mw=5.2 EMSC OFFSHORE EL SALVADOR
O: 30SEP2022 16:13:58 13.0N 88.8W ML=3.9 EMSC OFFSHORE EL SALVADOR
O: 30SEP2022 12:21:30 12.1N 88.0W ML=4.0 EMSC NEAR COAST OF NICARAGUA
P: 26SEP2022 146843 12.0N 88.0W 3.5-5.6 BAAAA Nicaragua
The strongest earthquake in the U.S. or Canada today was an M 4.2 in Southern Alaska. NEIC reported this earthquake of M 4.0 in Southern Alaska was felt with intensity II-III in the area(s) of Southern Alaska in Kenai, Ninilchik, Anchor Point, Soldotna, Sterling, Homer, Anchorage. This is not an unusual event in this region. The last event within about 100 km of this epicenter with M>=4.2 was an M 4.7 on July 12, 2022. Forecasts 146989 had expected today's event was likely in this area at the end of September.
O: 30SEP2022 23:24:08 61.1N 152.1W Mw=4.2 EMSC SOUTHERN ALASKA
P: 26SEP2022 146989 60.5N 151.5W 3.2-5.1 BAAAA Central Alaska
P: 26SEP2022 146989 61.3N 150.9W 3.2-5.1 BAAAA Central Alaska
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 30SEP2022 07:57:55 41.9N 79.0E mb=4.1 EMSC KYRGYZSTAN
P: 23SEP2022 146901 39.0N 78.0E 3.8-5.2 CCAAA Northern India
O: 1OCT2022 04:08:20 52.5N 143.5E mb=4.1 EMSC SAKHALIN, RUSSIA
P: 22SEP2022 146982 54.0N 143.0E 4.0-5.4 CCAAA Sakhalin
P: 30SEP2022 146960 49.0N 143.0E 3.5-5.6 ACAAA So. Kurils
O: 30SEP2022 19:50:15 23.3N 121.3E ML=4.3 EMSC TAIWAN
O: 30SEP2022 14:37:20 22.9N 121.4E mb=4.8 EMSC TAIWAN REGION
O: 30SEP2022 14:37:20 22.9N 121.3E ML=4.8 TAI Hualien, Taiwan
P: 28SEP2022 146870 24.0N 122.0E 4.0-5.4 AAAAA Taiwan
CWB reported this earthquake was felt with intensity IV in Taitung, III in Hualien, II in Kaohsiung and I in Nantou, Yunlin, Chiayi and Tainan Counties, Taiwan.
INDONESIA AND PHILIPPINES
O: 30SEP2022 19:54:30 2.0N 99.0E ML=4.6 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 20:01:59 2.0N 99.0E ML=4.1 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 19:28:43 2.1N 98.8E Mw=5.8 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 20:37:42 2.1N 99.0E mb=5.0 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 21:03:16 2.1N 99.0E ML=4.1 EMSC NORTHERN SUMATRA, INDONESIA
O: 30SEP2022 19:50:39 2.2N 98.9E mb=5.0 EMSC NORTHERN SUMATRA, INDONESIA
P: 22SEP2022 146802 2.0N 99.0E 4.0-5.5 CAAAA So. Sumatera
O: 30SEP2022 07:22:30 0.1N 96.7E mb=4.3 EMSC NIAS REGION, INDONESIA
P: 23SEP2022 146801 3.0N 94.0E 4.0-5.4 CCCAA Nicobar Islands
O: 30SEP2022 21:44:24 2.1N 129.1E mb=4.9 EMSC HALMAHERA, INDONESIA
P: 28SEP2022 146798 2.0N 128.0E 4.0-5.4 AAAAA Halmahera
O: 30SEP2022 14:30:23 2.5S 121.2E ML=4.5 EMSC SULAWESI, INDONESIA
P: 29SEP2022 146792 0.0N 122.0E 4.0-5.5 ACAAA Celebes Sea
O: 30SEP2022 09:22:20 6.2S 130.7E ML=4.5 EMSC BANDA SEA
P: 27SEP2022 146822 7.0S 131.0E 4.0-5.4 BAAAA West Irian, PNG
O: 30SEP2022 12:57:35 6.5S 104.9E ML=4.5 EMSC SUNDA STRAIT, INDONESIA
P: 30SEP2022 146817 7.0S 106.0E 4.0-5.7 AAAAA So. of Java
O: 1OCT2022 04:24:38 7.0S 129.4E ML=4.6 EMSC BANDA SEA
O: 30SEP2022 15:48:19 6.4S 130.3E ML=4.5 EMSC BANDA SEA
P: 27SEP2022 146822 7.0S 131.0E 4.0-5.4 BAAAA West Irian, PNG
O: 30SEP2022 14:31:11 9.4N 126.5E mb=4.3 EMSC MINDANAO, PHILIPPINES
P: 30SEP2022 146794 9.0N 126.0E 4.0-5.6 AAAAA Central Philippines
O: 30SEP2022 07:58:53 9.5S 119.6E ML=4.4 EMSC SUMBA REGION, INDONESIA
P: 30SEP2022 146806 8.0S 121.0E 4.0-5.5 ABBAA Flores Island area
O: 1OCT2022 03:54:56 17.0N 147.1E Mw=5.4 EMSC MARIANA ISLANDS REGION
O: 01OCT2022 04:25:51 17.1N 147.0E mb=4.7 EMSC MARIANA ISLANDS REGION
P: 25SEP2022 146845 17.0N 147.0E 4.0-5.5 CAAAA No. Marianas
CENTRAL AND SOUTH AMERICA
O: 1OCT2022 06:23:53 7.9S 74.4W mb=4.7 EMSC NORTHERN PERU
P: 27SEP2022 146813 6.0S 79.0W 4.0-5.6 BBCAA No. Peru
NEIC reported this earthquake of M 4.7 in Peru was felt with intensity II-III in the area(s) of Peru in Pucallpa.
O: 30SEP2022 17:32:38 12.3N 88.3W Mw=5.2 EMSC OFFSHORE EL SALVADOR
O: 30SEP2022 16:13:58 13.0N 88.8W ML=3.9 EMSC OFFSHORE EL SALVADOR
O: 30SEP2022 12:21:30 12.1N 88.0W ML=4.0 EMSC NEAR COAST OF NICARAGUA
P: 26SEP2022 146843 12.0N 88.0W 3.5-5.6 BAAAA Nicaragua
O: 30SEP2022 18:18:09 15.3N 94.3W mb=4.5 EMSC OFFSHORE CHIAPAS, MEXICO
O: 30SEP2022 20:39:41 15.1N 94.3W ML=4.0 EMSC OFF COAST OF CHIAPAS, MEXICO
P: 27SEP2022 146827 16.0N 94.0W 3.5-5.1 BAAAA Chiapas, Mexico
O: 30SEP2022 12:05:36 15.8N 88.4W mb=4.1 EMSC GUATEMALA
P: 29SEP2022 146828 14.0N 89.0W 3.5-5.2 ABAAA Coast of Central America
NEIC reported this earthquake of M 4.1 in Honduras was felt with intensity II-III in the area(s) of Honduras in Armenta and Puertes, Cortes.
O: 30SEP2022 08:56:22 16.3N 98.1W ML=4.0 EMSC OAXACA, MEXICO
P: 28SEP2022 146847 15.0N 98.0W 3.5-5.3 ABAAA Oaxaca, Mexico
O: 30SEP2022 12:09:29 16.3S 75.5W mb=4.5 EMSC OFF COAST OF SOUTHERN PERU
P: 27SEP2022 147014 18.0S 72.0W 4.0-5.4 BBCAA So. Peru/Bolivia
O: 30SEP2022 16:49:06 16.9N 94.1W ML=4.2 EMSC OAXACA, MEXICO
P: 27SEP2022 146827 16.0N 94.0W 3.5-5.1 BAAAA Chiapas, Mexico
O: 30SEP2022 10:55:18 17.7N 63.9W Md=3.4 EMSC ST. MARTIN REGION, LEEWARD ISL
P: 28SEP2022 146835 18.0N 65.0W 3.0-5.1 AAAAA Leeward Islands
O: 1OCT2022 05:27:57 17.8N 61.6W Mw=4.2 EMSC ANTIGUA AND BARBUDA REGION
P: 26SEP2022 146834 17.0N 60.0W 3.0-5.2 BABAA Leeward Islands
O: 30SEP2022 12:35:38 17.9N 66.5W Md=3.4 EMSC PUERTO RICO REGION
O: 30SEP2022 07:23:00 18.0N 66.5W Md=3.2 EMSC PUERTO RICO REGION
O: 30SEP2022 07:55:13 17.9N 66.5W Md=3.2 EMSC PUERTO RICO REGION
P: 28SEP2022 146835 18.0N 65.0W 3.0-5.1 AABAA Leeward Islands
P: 29SEP2022 146851 18.0N 68.0W 3.4-5.1 AABAA Puerto Rico
O: 30SEP2022 07:26:37 18.5N 74.1W ML=3.4 EMSC HAITI REGION
P: 25SEP2022 146852 19.0N 74.0W 3.4-5.1 BAAAA Puerto Rico
O: 30SEP2022 12:56:02 18.4N 103.9W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 30SEP2022 09:19:33 18.5N 103.2W ML=3.6 EMSC MICHOACAN, MEXICO
P: 28SEP2022 146841 18.0N 104.0W 3.5-5.5 AAAAA Michoacan, Mexico
O: 30SEP2022 07:36:34 19.1N 64.7W Md=3.4 EMSC VIRGIN ISLANDS REGION
O: 30SEP2022 08:23:45 18.9N 64.4W Md=3.3 EMSC VIRGIN ISLANDS REGION
P: 28SEP2022 146835 18.0N 65.0W 3.0-5.1 AAAAA Leeward Islands
O: 1OCT2022 02:11:02 19.6N 70.0W ML=3.0 EMSC DOMINICAN REPUBLIC
P: 26SEP2022 146856 20.0N 71.0W 3.0-4.8 BAAAA Bahamas/No. Caribbean
O: 1OCT2022 05:33:38 20.9S 69.1W mb=4.1 EMSC TARAPACA, CHILE
P: 28SEP2022 147024 20.0S 70.0W 4.0-5.8 BAAAA So. Peru/Bolivia
O: 30SEP2022 07:35:33 22.6S 68.5W mb=4.0 EMSC ANTOFAGASTA, CHILE
O: 30SEP2022 19:02:26 21.9S 68.7W mb=4.0 EMSC ANTOFAGASTA, CHILE
P: 24SEP2022 147024 21.0S 69.0W 4.0-5.4 CAAAA Coast No. Chile
O: 30SEP2022 09:41:54 27.6N 111.7W ML=3.5 EMSC GULF OF CALIFORNIA
O: 30SEP2022 18:35:58 27.0N 111.4W ML=4.0 EMSC GULF OF CALIFORNIA
P: 30SEP2022 146858 24.0N 109.0W 3.5-5.0 ACBAA Gulf of California
O: 30SEP2022 15:40:05 27.9S 68.3W ML=4.5 EMSC CATAMARCA, ARGENTINA
P: 27SEP2022 147022 28.0S 67.0W 4.0-5.6 BAAAA Argentina
O: 30SEP2022 07:41:12 32.1S 71.8W Mw=4.3 EMSC OFFSHORE COQUIMBO, CHILE
P: 29SEP2022 147033 34.0S 73.0W 4.0-5.8 ABAAA Central Chile
AFRICA AND EUROPE
O: 1OCT2022 01:45:07 39.6N 1.1W ML=3.8 EMSC SPAIN
P: 24SEP2022 146927 39.0N 0.0E 3.0-4.6 CAAAA Western Mediterranean
O: 1OCT2022 05:41:14 39.7N 40.6E mb=4.3 EMSC EASTERN TURKEY
P: 25SEP2022 146948 41.0N 36.0E 3.5-4.9 CBCAA No. Turkey/Black Sea
No significant (M>=5) or unusual earthquakes were reported in Europe today.
SOUTHWEST PACIFIC
O: 30SEP2022 15:45:50 14.2S 167.4E mb=4.6 EMSC VANUATU
P: 26SEP2022 147020 14.0S 167.0E 4.0-5.4 BAAAA Vanuatu Islands
O: 30SEP2022 11:26:51 18.6S 175.6W mb=4.6 EMSC TONGA
P: 30SEP2022 147017 19.0S 177.0W 4.0-5.4 AABAA Tonga Islands
O: 30SEP2022 11:38:33 25.7S 175.4W mb=5.0 EMSC SOUTH OF TONGA
P: 20SEP2022 146770 27.0S 177.0W 4.0-5.4 CBBAA Tonga Islands
O: 30SEP2022 09:24:37 22.8S 172.4E mb=4.8 EMSC SOUTHEAST OF LOYALTY ISLANDS
P: 27SEP2022 147025 21.0S 171.0E 4.0-5.4 CBBAA Loyalty Islands
OCEAN RIDGES
O: 1OCT2022 05:12:39 1.4S 15.3W Mw=5.3 EMSC NORTH OF ASCENSION ISLAND
P: 24SEP2022 146803 1.0S 16.0W 4.0-5.8 CAAAA Central Mid-Atlantic
O: 30SEP2022 12:21:07 53.6N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 01OCT2022 01:18:53 53.8N 35.5W Mw=5.9 EMSC REYKJANES RIDGE
O: 01OCT2022 04:58:04 53.8N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 01OCT2022 02:06:09 53.9N 35.3W Mw=5.0 EMSC REYKJANES RIDGE
O: 30SEP2022 19:52:05 53.9N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 30SEP2022 12:50:09 54.1N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 30SEP2022 11:38:53 53.5N 35.3W mb=4.6 EMSC REYKJANES RIDGE
P: 26SEP2022 146979 54.0N 35.0W 4.0-5.7 BAAAA North Mid-Atlantic Ridge
ZEALANDIA AND AUSTRALIA REGION
O: 1OCT2022 06:18:53 30.8S 179.7W mb=4.3 EMSC KERMADEC ISLANDS REGION
P: 25SEP2022 147036 30.0S 179.0W 4.0-5.6 CAAAA No. Kermadec Islands
P: 27SEP2022 147036 30.0S 177.0W 4.0-5.6 BACAA No. Kermadec Islands
JAPAN AND KURIL ISLANDS
No earthquakes of M>=4 were located in Japan or the Kuril Islands today.
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 30SEP2022 11:48:33 33.5N 116.5W Ml=2.3 EMSC SOUTHERN CALIFORNIA
O: 30SEP2022 11:50:11 33.5N 116.5W Ml=3.4 EMSC SOUTHERN CALIFORNIA
P: 27SEP2022 146912 33.9N 116.9W 2.5-4.6 BAAAA So. California
NEIC reported this earthquake of M 3.4 in Southern California was felt with intensity II-III in the area(s) of Southern California in Mountain Center, Palm Desert, Indian Wells, La Quinta, Rancho Mirage, Palm Desert and Indio.
O: 1OCT2022 04:17:27 35.7N 117.5W Ml=2.0 EMSC SOUTHERN CALIFORNIA
P: 29SEP2022 146915 35.1N 117.0W 2.5-4.8 AAAAA So. California
O: 1OCT2022 04:41:23 37.3N 118.3W Md=2.3 EMSC CENTRAL CALIFORNIA
P: 30SEP2022 146876 37.5N 118.6W 2.5-4.4 AAAAA California/Nevada area
O: 30SEP2022 10:38:41 38.8N 122.8W Md=2.2 EMSC NORTHERN CALIFORNIA
P: 30SEP2022 146883 38.7N 122.7W 2.5-4.6 AAAAA Central California
ALASKA
O: 30SEP2022 11:33:49 55.0N 156.5W ML=3.2 EMSC SOUTH OF ALASKA
P: 27SEP2022 146969 54.7N 156.9W 3.5-4.9 BAAAA Alaska Peninsula
O: 30SEP2022 23:24:08 61.1N 152.1W Mw=4.2 EMSC SOUTHERN ALASKA
P: 26SEP2022 146989 60.5N 151.5W 3.2-5.1 BAAAA Central Alaska
P: 26SEP2022 146989 61.3N 150.9W 3.2-5.1 BAAAA Central Alaska
O: 1OCT2022 06:12:13 63.0N 150.8W ML=3.4 EMSC CENTRAL ALASKA
P: 30SEP2022 146991 62.6N 151.4W 3.2-5.1 AAAAA Central Alaska
PACIFIC NORTHWESTERN U.S./WESTERN CANADA
O: 1OCT2022 02:02:33 48.1N 124.6W Ml=3.0 EMSC OLYMPIC PENINSULA, WASHINGTON
P: 30SEP2022 146965 49.0N 123.0W 2.0-3.9 AAAAA Washington state, U.S.
NEIC reported this earthquake of M 3.0 in Olympic Peninsula, Washington State was felt with intensity II-III in the area(s) of Olympic Peninsula, Washington Staten Clallam Bay, Foks, Pot Angeles, Sequim, Port Twonsend, Seabeck and Shelton.
ROCKY MOUNTAINS REGION
O: 30SEP2022 16:27:55 31.7N 104.4W ML=2.4 EMSC WESTERN TEXAS
O: 30SEP2022 09:05:52 31.7N 104.5W ML=3.2 EMSC WESTERN TEXAS
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 BAAAA SW U.S.A
O: 30SEP2022 08:04:06 32.4N 101.1W mb=2.7 EMSC WESTERN TEXAS
O: 30SEP2022 13:16:05 32.4N 101.1W ML=2.4 EMSC WESTERN TEXAS
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 BACAA SW U.S.A
O: 1OCT2022 02:18:39 44.2N 115.1W ML=2.5 EMSC SOUTHERN IDAHO
P: 30SEP2022 146940 44.5N 116.2W 2.0-4.1 AAAAA Montana/Idaho
O: 30SEP2022 10:36:30 44.8N 110.8W Ml=2.0 EMSC YELLOWSTONE NAT. PARK, WYOMING
P: 26SEP2022 146967 44.6N 110.8W 2.0-3.9 BAAAA Yellowstone/Wyoming
EASTERN U.S./CANADA
O: 1OCT2022 01:07:19 36.0N 97.9W ML=2.3 EMSC OKLAHOMA
P: 28SEP2022 146922 37.0N 98.0W 2.0-4.1 BAAAA Southern Plains
O: 1OCT2022 04:27:49 36.1N 89.8W Md=2.2 EMSC SOUTHEASTERN MISSOURI
P: 27SEP2022 146896 36.0N 89.0W 2.0-3.9 BAAAA New Madrid area
HAWAII
O: 30SEP2022 11:05:50 19.3N 155.4W ML=3.0 EMSC ISLAND OF HAWAII, HAWAII
P: 28SEP2022 146833 18.8N 155.2W 3.0-4.5 AAAAA Hawaii
MODERATE QUAKES IN MYANMAR AND SOUTHEASTERN ALASKA
EARTHQUAKE SUMMARY FOR SEPTEMBER 29, 2022
A moderate earthquake of M 5.6 was widely felt in Myanmar today. It was reported by NEIC to have been felt with maximum intensity IV in Myanmar at Mawlaik, Mandalay, in Idia at Namipur and Assam with IV and with lesser intensity in Bangladesh at Uttar Dhurung, Chattagam, Fatekharkul, Baraghop and Silhat. This is the strongest earthquake in Myanmar since M 5.9 in Myanmar on July 21, 2022 about 500 km southeast of today's epicenter. The last earthquake within about 250 km of this epicenter with equal or larger magnitude than today's was an M 6.2 southwest of this on November 25, 2021. At the time this summary noted in this regard:
"The strongest earthquake in the world today was an M 6.2 on the Myanmar-India border. NEIC reported it was felt with maximum intensity VIII in North Vanlaiphai, India; VII in Rangamali, Bangladesh and Champhal, Mizoram, India and VI in Lunglei and Serchhip, and V in Alzaei and Mamit, Mizoram, India and in Bangladesh at Ranguna and Bandarban with IV in Saiha, Mizorm, India. The press reported light to moderate regional damage with this earthquake. This is the strongest earthquake within about 250 km of this epicenter since an M 6.9 on April 13, 2015 and an M 6.8 on November 11, 2012. In the past 30 years similar earthquakes also hit the region on June 15, 1992 and January 5, 1991." (November 25-26, 2021)
Forecast 146863 had expected enhanced seismicity in this area of Myanmar was likely at the end of September.
O: 30SEP2022 02:23:15 24.8N 94.9E mb=4.6 EMSC MYANMAR-INDIA BORDER REGION
O: 29SEP2022 22:22:37 23.1N 95.0E Mw=5.6 EMSC MYANMAR
P: 30SEP2022 146863 20.0N 96.0E 4.0-5.4 ACAAA Myanmar
The strongest earthquake in the world today was an M 5.8 in the Loyalty Islands of the southwest Pacific. It was not reported felt in this remote area. This appears to be an aftershock of the M 7.0 about 200 km northwest of this epicenter in the Loyalty Islands of September 14, 2022. Forecast 147025 had expected today's activity was likely at the end of September. This activity and that in the Reykjanes Ridge of the North Atlantic are separated by 143 degrees and may have
helped enhance each other.
O: 29SEP2022 22:59:01 22.9S 172.3E Mw=5.8 EMSC SOUTHEAST OF LOYALTY ISLANDS
P: 24SEP2022 147025 22.0S 171.0E 4.0-5.4 BAAAA Loyalty Islands
P: 27SEP2022 147025 21.0S 171.0E 4.0-5.4 ABAAA Loyalty Islands
The strongest earthquake in the U.S. or Canada today was an M 5.1-5.3 in Southeastern Alaska. NEIC reported it was felt with intensity II-III in Alaska at Yakutat, Juneau, Anchorage, and possibly Fairbanks. This is the strongest earthquake within about 200 km of this epicenter in southeastern Alaska since an M 5.9 on July 25, 2014. An earthquake of M 5.1-5.2 occurred in the area on January 8, 2022. Today's earthquake occurred near local solar noon at a longitude where tidal stresses were maximized during the new moon of September 25 as noted in previous issues of this summary:
"The new moon arrived on September 25, 2022 at 21:54 UT. Longitudes which were at local solar noon at this time are located near 150W while those at local solar midnight are near 30E. These include areas of Southern Alaska and western U.S. and Canada in the west and eastern Europe including Greece and Turkey in the east. These areas may see significant increases in seismicity during the next week." (September 23-28, 2022)
Forecast 146987 had expected a moderate earthquake in this region was likely at the end of September 2022. This activity is at the forth node (90 degrees) from the Loyalty Islands M 7.0 of September 14, 2022 and may have been promoted by energy from that source.
O: 29SEP2022 23:08:10 60.2N 141.3W Mw=5.0 EMSC SOUTHERN ALASKA
O: 29SEP2022 23:08:11 60.2N 141.3W MB=5.3 ECAN of Burwash Landing, YT
P: 24SEP2022 146987 61.3N 140.1W 3.2-5.6 BBAAA Central Alaska
P: 28SEP2022 146987 60.0N 137.0W 3.2-5.6 AABAA Central Alaska
The strong swarm in the Reykjanes Ridge of the North Atlantic continued for the third day today. The maximum event in the area today was an M 5.7, the strongest to date in the current activity. This summary noted this swarm in the previous issue as:
"The strong swarm in the Reykjanes Ridge south of Iceland also continued today with more than 20 new events of M>=4 included three of M 5.1. This series began September 26 and included an M 5.7 when Hurricane Fiona, the strongest ocean storm in this region in decades, passed over this epicenter. Forecast 146979 had expected this activity was likely around September 26." (September 28-29, 2022)
O: 29SEP2022 07:50:13 53.5N 35.5W mb=4.7 EMSC REYKJANES RIDGE
O: 29SEP2022 12:16:43 53.6N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 29SEP2022 15:11:01 53.7N 35.7W mb=4.8 EMSC REYKJANES RIDGE
O: 29SEP2022 20:47:03 53.7N 35.2W ML=4.4 EMSC REYKJANES RIDGE
O: 29SEP2022 15:32:31 53.8N 35.2W Mw=5.7 EMSC REYKJANES RIDGE
O: 29SEP2022 20:23:50 53.8N 35.2W Mw=4.7 EMSC REYKJANES RIDGE
O: 29SEP2022 09:32:28 53.9N 35.3W Mw=4.9 EMSC REYKJANES RIDGE
O: 29SEP2022 09:55:58 53.9N 35.2W mb=5.1 EMSC REYKJANES RIDGE
O: 29SEP2022 12:30:04 53.9N 35.2W mb=4.5 EMSC REYKJANES RIDGE
O: 29SEP2022 22:18:52 53.9N 35.2W mb=5.0 EMSC REYKJANES RIDGE
O: 29SEP2022 22:18:52 53.9N 35.2W mb=5.0 EMSC REYKJANES RIDGE
O: 30SEP2022 03:22:17 53.9N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 29SEP2022 08:14:51 53.3N 35.5W mb=4.7 EMSC REYKJANES RIDGE
P: 26SEP2022 146979 54.0N 35.0W 4.0-5.7 BAAAA North Mid-Atlantic Ridge
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 30SEP2022 02:23:15 24.8N 94.9E mb=4.6 EMSC MYANMAR-INDIA BORDER REGION
O: 29SEP2022 22:22:37 23.1N 95.0E Mw=5.6 EMSC MYANMAR
P: 30SEP2022 146863 20.0N 96.0E 4.0-5.4 ACAAA Myanmar
O: 29SEP2022 10:48:11 41.6N 78.2E mb=4.6 EMSC KYRGYZSTAN
P: 23SEP2022 146901 39.0N 78.0E 3.8-5.2 CBAAA Northern India
INDONESIA AND PHILIPPINES
O: 29SEP2022 11:34:43 2.4S 139.9E mb=5.4 EMSC NEAR N COAST OF PAPUA, INDONES
P: 27SEP2022 146815 4.0S 140.0E 4.0-5.4 ABAAA Papua New Guinea
O: 29SEP2022 11:12:32 2.5N 128.9E ML=4.2 EMSC HALMAHERA, INDONESIA
O: 29SEP2022 15:14:39 2.7N 128.5E mb=4.6 EMSC HALMAHERA, INDONESIA
P: 28SEP2022 146798 2.0N 128.0E 4.0-5.4 AAAAA Halmahera
O: 29SEP2022 20:45:54 2.7S 128.0E ML=4.3 EMSC CERAM SEA, INDONESIA
P: 29SEP2022 146804 4.0S 128.0E 4.0-5.5 ABAAA Ceram area
O: 30SEP2022 03:43:10 3.7S 144.3E mb=5.0 EMSC NEAR N COAST OF NEW GUINEA, PN
P: 27SEP2022 146815 4.0S 140.0E 4.0-5.4 BACAA Papua New Guinea
O: 29SEP2022 12:56:33 5.3S 102.9E ML=4.6 EMSC SOUTHERN SUMATRA, INDONESIA
P: 22SEP2022 146818 3.0S 103.0E 4.0-5.4 CCAAA So. of Sumatera
O: 30SEP2022 00:55:25 5.6S 131.1E ML=4.0 EMSC BANDA SEA
P: 27SEP2022 146822 7.0S 131.0E 4.0-5.4 BBAAA West Irian, PNG
O: 30SEP2022 02:59:02 9.5N 126.8E mb=4.8 EMSC MINDANAO, PHILIPPINES
P: 30SEP2022 146794 9.0N 126.0E 4.0-5.6 AAAAA Central Philippines
CENTRAL AND SOUTH AMERICA
O: 29SEP2022 23:02:42 0.2N 77.3W mb=4.9 EMSC COLOMBIA-ECUADOR BORDER REGION
P: 24SEP2022 146805 1.0S 78.0W 4.0-5.6 BBAAA Ecuador
O: 29SEP2022 08:41:19 5.0N 82.7W mb=4.3 EMSC SOUTH OF PANAMA
O: 29SEP2022 15:03:35 5.9N 84.4W mb=4.6 EMSC OFF COAST OF CENTRAL AMERICA
P: 29SEP2022 146796 8.0N 82.0W 3.5-5.2 ACCAA Costa Rica
O: 30SEP2022 05:42:11 7.1S 79.5W ML=4.0 EMSC NEAR COAST OF NORTHERN PERU
P: 27SEP2022 146813 6.0S 79.0W 4.0-5.6 BBAAA No. Peru
P: 28SEP2022 146813 9.0S 80.0W 4.0-5.6 ABAAA No. Peru
O: 29SEP2022 12:21:41 15.4N 94.7W ML=4.2 EMSC OFFSHORE OAXACA, MEXICO
P: 27SEP2022 146827 16.0N 94.0W 3.5-5.1 AAAAA Chiapas, Mexico
O: 29SEP2022 14:21:17 16.0N 93.8W ML=4.4 EMSC CHIAPAS, MEXICO
P: 27SEP2022 146827 16.0N 94.0W 3.5-5.1 AAAAA Chiapas, Mexico
O: 29SEP2022 23:59:48 16.7S 73.0W ML=4.0 EMSC NEAR COAST OF SOUTHERN PERU
P: 27SEP2022 147014 18.0S 72.0W 4.0-5.4 ABAAA So. Peru/Bolivia
O: 29SEP2022 15:52:04 18.0N 93.5W ML=4.0 EMSC TABASCO, MEXICO
P: 27SEP2022 146827 16.0N 94.0W 3.5-5.1 ABAAA Chiapas, Mexico
O: 29SEP2022 09:51:34 18.5N 103.3W ML=4.3 EMSC MICHOACAN, MEXICO
O: 29SEP2022 15:35:10 19.7N 103.5W ML=4.1 EMSC JALISCO, MEXICO
O: 29SEP2022 11:31:26 18.1N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
P: 28SEP2022 146841 18.0N 104.0W 3.5-5.5 AAAAA Michoacan, Mexico
O: 30SEP2022 05:33:48 19.1N 64.7W ML=3.2 EMSC VIRGIN ISLANDS REGION
O: 30SEP2022 01:33:04 19.1N 64.5W Md=3.4 EMSC VIRGIN ISLANDS REGION
P: 28SEP2022 146835 18.0N 65.0W 3.0-5.1 ABAAA Leeward Islands
O: 29SEP2022 08:36:52 27.1N 111.9W ML=3.9 EMSC GULF OF CALIFORNIA
P: 30SEP2022 146858 24.0N 109.0W 3.5-5.0 ACBAA Gulf of California
O: 29SEP2022 15:09:49 28.9S 69.9W ML=4.0 EMSC ATACAMA, CHILE
P: 27SEP2022 147023 29.0S 70.0W 4.0-5.6 AAAAA Coast Central Chile
O: 30SEP2022 06:15:46 45.8S 76.2W Mw=5.3 EMSC OFF COAST OF AISEN, CHILE
AFRICA AND EUROPE
O: 29SEP2022 13:03:31 35.4N 23.0E ML=3.8 EMSC CRETE, GREECE
P: 29SEP2022 146888 34.0N 25.0E 3.0-4.9 ABBAA Crete
O: 29SEP2022 09:14:45 37.2N 4.1W ML=3.9 EMSC SPAIN
P: 26SEP2022 146893 37.0N 3.0W 3.5-5.2 BAAAA Morocco/Spain
O: 29SEP2022 21:49:02 39.6N 40.5E Mw=4.3 EMSC EASTERN TURKEY
P: 25SEP2022 146948 41.0N 36.0E 3.5-4.9 BBCAA No. Turkey/Black Sea
No significant (M>=5) or unusual earthquakes were reported in Europe today.
SOUTHWEST PACIFIC
O: 30SEP2022 05:46:09 17.7S 179.8W mb=4.5 EMSC FIJI REGION
P: 30SEP2022 147017 18.0S 180.0W 4.0-5.6 AAAAA Tonga Islands
O: 30SEP2022 02:26:23 25.2S 176.5W mb=4.5 EMSC SOUTH OF FIJI ISLANDS
P: 20SEP2022 146770 27.0S 177.0W 4.0-5.4 CCAAA Tonga Islands
O: 29SEP2022 22:59:01 22.9S 172.3E Mw=5.8 EMSC SOUTHEAST OF LOYALTY ISLANDS
P: 24SEP2022 147025 22.0S 171.0E 4.0-5.4 BAAAA Loyalty Islands
P: 27SEP2022 147025 21.0S 171.0E 4.0-5.4 ABAAA Loyalty Islands
OCEAN RIDGES
O: 29SEP2022 07:50:13 53.5N 35.5W mb=4.7 EMSC REYKJANES RIDGE
O: 29SEP2022 12:16:43 53.6N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 29SEP2022 15:11:01 53.7N 35.7W mb=4.8 EMSC REYKJANES RIDGE
O: 29SEP2022 20:47:03 53.7N 35.2W ML=4.4 EMSC REYKJANES RIDGE
O: 29SEP2022 15:32:31 53.8N 35.2W Mw=5.7 EMSC REYKJANES RIDGE
O: 29SEP2022 20:23:50 53.8N 35.2W Mw=4.7 EMSC REYKJANES RIDGE
O: 29SEP2022 09:32:28 53.9N 35.3W Mw=4.9 EMSC REYKJANES RIDGE
O: 29SEP2022 09:55:58 53.9N 35.2W mb=5.1 EMSC REYKJANES RIDGE
O: 29SEP2022 12:30:04 53.9N 35.2W mb=4.5 EMSC REYKJANES RIDGE
O: 29SEP2022 22:18:52 53.9N 35.2W mb=5.0 EMSC REYKJANES RIDGE
O: 29SEP2022 22:18:52 53.9N 35.2W mb=5.0 EMSC REYKJANES RIDGE
O: 30SEP2022 03:22:17 53.9N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 29SEP2022 08:14:51 53.3N 35.5W mb=4.7 EMSC REYKJANES RIDGE
P: 26SEP2022 146979 54.0N 35.0W 4.0-5.7 BAAAA North Mid-Atlantic Ridge
ZEALANDIA AND AUSTRALIA REGION
O: 29SEP2022 14:18:08 31.1S 179.8E ML=4.6 EMSC KERMADEC ISLANDS REGION
O: 29SEP2022 22:25:56 31.3S 179.4E ML=4.1 EMSC KERMADEC ISLANDS REGION
O: 30SEP2022 06:37:34 32.0S 179.8W Mw=5.1 EMSC SOUTH OF KERMADEC ISLANDS
P: 25SEP2022 147036 30.0S 179.0W 4.0-5.6 BBAAA No. Kermadec Islands
JAPAN AND KURIL ISLANDS
O: 30SEP2022 05:58:37 36.1N 139.8E Mw=4.3 EMSC EASTERN HONSHU, JAPAN
O: 29SEP2022 15:03:38 36.8N 140.6E mb=4.7 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 26SEP2022 146903 37.0N 142.0E 4.0-5.4 BAAAA Off East Coast Honshu
NEIC reported this earthquake of M 4.3 in Eastern Honshu, Japan was felt with intensity II-III in the area(s) of Eastern Honshu, Japan in Saitama, Tokyo, Gunma and Kanagawa Prefectures, Japan.
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 29SEP2022 09:57:30 30.9N 114.3W ML=3.6 EMSC GULF OF CALIFORNIA
P: 26SEP2022 146908 32.1N 116.4W 2.5-4.4 BBBAA So. California
O: 29SEP2022 21:58:34 31.3N 115.3W ML=3.2 EMSC BAJA CALIFORNIA, MEXICO
O: 29SEP2022 17:34:37 31.5N 115.6W ML=3.4 EMSC BAJA CALIFORNIA, MEXICO
P: 26SEP2022 146908 32.1N 116.4W 2.5-4.4 BAAAA So. California
O: 30SEP2022 06:07:25 34.1N 117.0W ML=2.5 EMSC SOUTHERN CALIFORNIA
P: 27SEP2022 146912 33.9N 116.9W 2.5-4.6 BAAAA So. California
O: 30SEP2022 03:06:05 36.2N 115.1W ML=2.7 EMSC LAS VEGAS URBAN AREA, NEVADA
P: 28SEP2022 146894 37.3N 114.9W 2.5-4.5 ABAAA Nevada area
NEIC reported this earthquake of M 2.5 in Las Vegas, Nevada was felt with intensity II-III in the area(s) of Las Vegas, Nevada and in North Las Vegas.
O: 29SEP2022 22:45:49 36.6N 121.1W Md=2.4 EMSC CENTRAL CALIFORNIA
P: 30SEP2022 146880 36.4N 121.0W 2.5-4.6 AAAAA Central California
O: 29SEP2022 19:36:58 37.3N 120.0W Md=2.3 EMSC CENTRAL CALIFORNIA
P: 30SEP2022 146880 36.4N 121.0W 2.5-4.6 AAAAA Central California
O: 29SEP2022 21:18:58 40.2N 120.2W Md=2.2 EMSC NORTHERN CALIFORNIA
P: 29SEP2022 146949 40.2N 121.2W 2.5-4.7 AAAAA Northern California
ALASKA
O: 29SEP2022 22:29:38 51.7N 178.8W ML=3.2 EMSC ANDREANOF ISLANDS, ALEUTIAN IS.
O: 29SEP2022 18:52:14 51.3N 178.7E mb=4.1 EMSC RAT ISLANDS, ALEUTIAN ISLANDS
P: 24SEP2022 146981 51.0N 178.0E 4.0-5.6 BAAAA Rat Islands
O: 29SEP2022 19:10:24 55.1N 159.6W mb=4.2 EMSC ALASKA PENINSULA
P: 29SEP2022 146985 54.7N 161.2W 3.5-5.3 AAAAA Unimak Islands, Aleutians
O: 29SEP2022 23:08:10 60.2N 141.3W Mw=5.0 EMSC SOUTHERN ALASKA
O: 29SEP2022 23:08:11 60.2N 141.3W MB=5.3 ECAN of Burwash Landing, YT
P: 24SEP2022 146987 61.3N 140.1W 3.2-5.6 BBAAA Central Alaska
P: 28SEP2022 146987 60.0N 137.0W 3.2-5.6 AABAA Central Alaska
PACIFIC NORTHWESTERN U.S./WESTERN CANADA
O: 30SEP2022 04:53:25 47.3N 122.9W Ml=2.2 EMSC PUGET SOUND REGION, WASHINGTON
O: 29SEP2022 19:50:11 46.9N 122.0W Ml=2.4 EMSC WASHINGTON
P: 26SEP2022 146964 46.9N 122.0W 2.0-4.2 BAAAA Washington state, U.S.
O: 27SEP2022 19:40:47 48.7N 128.9W MB=3.1 ECAN of Port Alice, BC
O: 29SEP2022 15:09:34 47.7N 128.7W ML=3.2 EMSC OFF COAST OF WASHINGTON
P: 24SEP2022 146963 48.9N 129.3W 2.8-5.3 BAAAA Vancouver Island area
ROCKY MOUNTAINS REGION
O: 29SEP2022 07:20:15 31.7N 104.1W ML=2.7 EMSC WESTERN TEXAS
O: 29SEP2022 08:10:10 31.7N 104.4W ML=2.4 EMSC WESTERN TEXAS
O: 29SEP2022 08:16:52 31.7N 104.4W ML=2.1 EMSC WESTERN TEXAS
O: 29SEP2022 17:28:15 31.7N 104.4W ML=2.0 EMSC WESTERN TEXAS
O: 29SEP2022 17:28:15 31.7N 104.4W ML=2.0 EMSC WESTERN TEXAS
O: 30SEP2022 05:37:24 31.7N 104.4W ML=2.8 EMSC WESTERN TEXAS
O: 30SEP2022 06:09:43 31.6N 104.5W ML=2.9 EMSC WESTERN TEXAS
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 BAAAA SW U.S.A
O: 29SEP2022 23:59:13 44.8N 110.8W Ml=2.6 EMSC YELLOWSTONE NAT. PARK, WYOMING
P: 26SEP2022 146967 44.6N 110.8W 2.0-3.9 BAAAA Yellowstone/Wyoming
EASTERN U.S./CANADA
O: 29SEP2022 16:25:08 35.2N 97.8W mb=2.7 EMSC OKLAHOMA
P: 25SEP2022 146921 36.0N 97.0W 2.0-4.1 BAAAA Southern Plains
NEIC reported this earthquake of M 3.1 in Oklahoma was felt with intensity II-III in the area(s) of Oklahoma in Aline and Carmen.
O: 29SEP2022 22:59:08 36.5N 98.4W mb=2.7 EMSC OKLAHOMA
P: 28SEP2022 146922 37.0N 98.0W 2.0-4.1 AAAAA Southern Plains
O: 28SEP2022 20:19:16 41.7N 81.5W MB=1.9 ECAN of Cleveland, OH
P: 24SEP2022 146953 41.8N 81.4W 2.0-4.1 BAAAA Ohio/Lake Erie
O: 28SEP2022 13:54:26 70.8N 71.6W MB=3.1 ECAN of Clyde River, NU
P: 24SEP2022 147000 73.3N 73.5W 2.5-3.9 BCAAA Baffin/Davis Strait Canada
O: 28SEP2022 10:26:33 83.1N 53.3W MB=3.3 ECAN of Nord, GL
O: 28SEP2022 08:39:18 45.1N 65.9W MB=1.5 ECAN of Saint John, NB
P: 22SEP2022 146938 44.4N 68.2W 2.0-4.1 CABAA Maine
O: 26SEP2022 23:29:51 47.1N 76.3W MB=1.9 ECAN of Grand-Remous, QC
P: 24SEP2022 146946 47.0N 76.0W 2.0-4.3 AAAAA New York State
HAWAII
O: 30SEP2022 02:27:34 19.5N 155.6W ML=3.2 EMSC ISLAND OF HAWAII, HAWAII
O: 29SEP2022 14:12:08 19.2N 155.5W ML=3.3 EMSC ISLAND OF HAWAII, HAWAII
P: 28SEP2022 146833 18.8N 155.2W 3.0-4.5 AAAAA Hawaii
NEIC reported this earthquake of M 3.1 in Hawaii was felt with intensity II-III in the area(s) of Hawaii in Kailua Kona.
An M 3.2 also occurred in Hawaii today and was reported with intensity II-III in Hawaii in Naalehu, Mountain View, Pepeekeo, Honokaa and Kehei.
STRONG EARTHQUAKE IN SOUTH ATLANTIC 103 DEGREES FROM MICHOACAN, MEXICO M 7.6
EARTHQUAKE SUMMARY FOR SEPTEMBER 28, 2022
The strongest earthquake in the world today was an M 6.6 in the South Atlantic region east of the South Sandwich Islands. The epicenter of this earthquake is at 103 degrees from the M 7.6 in Michoacan, Mexico of September 19, 2022 and is the strongest earthquake in the world since that event. The likelihood of seismic triggering at this distance from the Michoacan event had been noted in previous issues of this summary as:
"Areas likely to see far-field seismic enhancement from this earthquake include:
P- and S- shadow zone edge and node 7 (101-110 degrees): Mexico to Greece. Turkey, Vanuatu, Hokkaido, Southern Mid-Atlantic" (September 19-20, 2022)
As noted on many occasions in previous issues of this summary, energy associated with body waves and surface wave is most concentrated at the Shadow zone boundary on the surface (at and near 103 degrees from the main surface disturbance). This energy can subsequently trigger subsequential seismicity in seismic areas at that distance from the epicenter of the main disturbance which can include major earthquakes, major nuclear tests, strong cyclones, meteor impacts etc.
A pair of M 5.1 quakes in the Mariana Islands as well as moderate quakes in the Bonin and Izu Islands and an M 4.5 in the Mediterranean today were also located 103 degrees from Michoacan, Mexico.
Today's M 6.7 was followed about an hour later by an M 5.4 aftershock. It occurred near local solar midnight and was likely enhanced by strong tidal stresses which maximize near this hour. Forecast 146791 had expected this event within about 100 km was likely around September 20.
O: 29SEP2022 04:11:26 60.8S 20.2W mb=5.4 EMSC EAST OF SOUTH SANDWICH ISLANDS
O: 29SEP2022 03:03:24 60.9S 20.1W Mw=6.7 EMSC EAST OF SOUTH SANDWICH ISLANDS
P: 20SEP2022 146791 61.0S 22.0W 4.0-5.6 CAAAA Southern Ocean
The strong swarm in the Reykjanes Ridge south of Iceland also continued today with more than 20 new events of M>=4 included three of M 5.1. This series began September 26 and included an M 5.7 when Hurricane Fiona, the strongest ocean storm in this region in decades, passed over this epicenter. Forecast 146979 had expected this activity was likely around September 26.
O: 28SEP2022 07:13:15 53.6N 35.1W mb=4.4 EMSC REYKJANES RIDGE
O: 28SEP2022 10:59:47 53.6N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 14:13:46 53.6N 35.3W Mw=5.1 EMSC REYKJANES RIDGE
O: 29SEP2022 02:06:46 53.6N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 07:59:37 53.7N 35.5W mb=4.9 EMSC REYKJANES RIDGE
O: 28SEP2022 12:30:43 53.7N 35.6W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 21:11:18 53.7N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 29SEP2022 06:58:40 53.7N 35.5W mb=4.7 EMSC REYKJANES RIDGE
O: 28SEP2022 12:49:10 53.8N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 13:20:52 53.8N 35.3W mb=4.4 EMSC REYKJANES RIDGE
O: 28SEP2022 17:56:23 53.8N 35.2W mb=4.4 EMSC REYKJANES RIDGE
O: 28SEP2022 23:42:41 53.8N 35.8W mb=4.5 EMSC REYKJANES RIDGE
O: 29SEP2022 04:45:07 53.8N 35.2W mb=4.8 EMSC REYKJANES RIDGE
O: 29SEP2022 05:38:52 53.8N 35.4W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 09:06:05 53.9N 35.4W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 09:50:58 53.9N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 28SEP2022 10:03:05 53.9N 35.2W Mw=5.1 EMSC REYKJANES RIDGE
O: 29SEP2022 00:38:28 53.9N 35.3W mb=4.9 EMSC REYKJANES RIDGE
O: 29SEP2022 06:36:03 53.9N 35.2W Mw=5.0 EMSC REYKJANES RIDGE
O: 29SEP2022 04:08:23 54.0N 35.3W mb=5.0 EMSC REYKJANES RIDGE
O: 29SEP2022 00:34:29 54.1N 35.3W mb=4.5 EMSC REYKJANES RIDGE
O: 29SEP2022 02:24:00 53.5N 35.2W Mw=5.1 EMSC REYKJANES RIDGE
P: 26SEP2022 146979 54.0N 35.0W 4.0-5.7 BAAAA North Mid-Atlantic Ridge
Another moderately large earthquake today occurred south of Michoacan, Mexico with M 5.5 on the Northern East Pacific Rise. This is the strongest quake within about 200 km of this epicenter since an M 5.7 on December 23, 2020; an M 6.0 on January 18, 2019 and an M 5.8 on May 14, 2016. It was not reported felt. This earthquake occurred as a new Tropical Depression was forming near the epicenter. This summary had noted this as:
"TS ORLENE 2022-09-29 00:00 UT 14.5N 104.4W 045 kts south of Michoacan, Mexico
TS Orlene (16E) continued today south of Michoacan, Nexico with winds up to 45 kts. It is expected to track to the north and may enhance aftershocks in the next several days in the northern East Pacific Rise and in Michoacan, Baja and Colima, Mexico." (September 29, 2022)
O: 28SEP2022 22:34:48 8.5N 102.7W Mw=5.5 EMSC NORTHERN EAST PACIFIC RISE
An unusually larger M 5.1 also occurred in the northeastern Caribbean and was felt from the Virgin Islands to Guadeloupe, Leeward Islands. A moderate earthquakes of M 5.0-5.1 occurred today in the region of the Virgin Islands and in Antigua, Barbuda in the northeastern Caribbean. NEIC reported it was felt with maximum intensity IV in Saint John's Barbuda and Antigua with intensity II-III in Codrington, Cedar Grove, Potters Village, Antigua and Barbuda and in Saint Kitts and Nevis at Mansion Christ Church, Nochola Town, Monkey Hill Basseterre, Boyds Trinity, and in Point-a-Pitre, Grande-Terre, Guadeloupe. This is the strongest earthquake within about 200 km of these epicenters since an M 5.2 on February 9, 2018. The last of significantly larger magnitude in this region was an M 5.6 on April 17, 2017. Hurricane Fiona passed over this epicenter several days ago and enhanced seismicity was expected due to stresses from this storm in this summary at the time as:
"TS Fiona continued today south of Puerto Rico with winds up to 60 kts. It is expected to track to the west over the next several days reaching Puerto Rico in the next two days as a major storm. It could help promoted enhanced seismicity in the Virgin Islands, Leeward Islands and Puerto Rico around September 18-19." (September 18-24, 2022)
Forecast 146834 had expected today's activity in this area was likely around September 26. This activity is located at 144 degrees from the M 7.0 in Luzon, Philippines of July 27, 2022 and may have been promoted by energy
from that source.
O: 28SEP2022 21:37:56 17.9N 61.6W ML=4.2 EMSC ANTIGUA AND BARBUDA REGION
O: 29SEP2022 00:36:19 17.9N 61.5W ML=3.9 EMSC ANTIGUA AND BARBUDA REGION
O: 28SEP2022 21:34:02 18.0N 61.4W Mw=4.3 EMSC ANTIGUA AND BARBUDA REGION
O: 28SEP2022 19:48:39 17.7N 61.7W Mw=5.1 EMSC ANTIGUA AND BARBUDA REGION
P: 26SEP2022 146834 17.0N 60.0W 3.0-5.2 AABAA Leeward Islands
The strongest earthquake in the U.S. or Canada today was an M 3.4 in the area of San Francisco, California. NEIC reported this earthquake of M 3.4 south of San Francisco, California was felt with intensity II-III in the area(s) of San Francisco, California in Livermore, Milpitas, San Jose, Pleasanton, Fremont. This event is the strongest within about 50 km of this epicenter since an M 4.1 on June 2, 2022. The only other such event within this area this year was an M 3.6 on March 19, 2022. Forecast 146882 had expected this activity within about 25 km was likely around September 28.
O: 28SEP2022 17:02:02 37.5N 121.6W Ml=3.4 EMSC NORTHERN CALIFORNIA
O: 28SEP2022 09:58:56 38.1N 122.0W Md=2.1 EMSC SAN FRANCISCO BAY AREA, CALIF.
P: 28SEP2022 146882 37.7N 121.9W 2.5-4.5 AAAAA Central California
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 28SEP2022 05:13:09 23.1N 121.4E ML=4.0 TAI Hualien, Taiwan
P: 26SEP2022 146869 23.0N 121.0E 4.0-5.4 AAAAA Taiwan
CWB reported this earthquake was felt with intensity II in Taitung and I in Hualien, Yilan, Nantou,Kaoshiung, Changhua Counties, Taiwan.
O: 28SEP2022 16:18:03 33.4N 46.7E mb=4.3 EMSC IRAN-IRAQ BORDER REGION
P: 24SEP2022 146918 34.0N 49.0E 3.8-5.8 BABAA So. Iran
O: 28SEP2022 18:03:28 27.6N 54.3E mb=4.6 EMSC SOUTHERN IRAN
P: 30SEP2022 146867 28.0N 56.0E 3.5-4.9 AABAA So. Iran/Persian Gulf
O: 29SEP2022 04:26:46 46.6N 82.2E mb=4.0 EMSC KAZAKHSTAN-XINJIANG BORDER REG
P: 21SEP2022 146983 50.0N 88.0E 3.0-4.4 CCCAA So. Siberia
O: 28SEP2022 23:09:31 55.6N 160.6E mb=4.5 EMSC KAMCHATKA PENINSULA, RUSSIA
P: 24SEP2022 146974 54.0N 162.0E 4.0-5.4 BBAAA E. of Kamchatka
No significant (M>=5) or unusual earthquakes were reported in Asia today.
INDONESIA AND PHILIPPINES
O: 28SEP2022 11:41:38 2.8N 128.2E mb=4.6 EMSC HALMAHERA, INDONESIA
P: 28SEP2022 146798 2.0N 128.0E 4.0-5.4 AAAAA Halmahera
O: 28SEP2022 17:35:11 17.0N 147.1E mb=5.1 EMSC MARIANA ISLANDS REGION
O: 28SEP2022 21:41:07 17.0N 147.1E mb=5.1 EMSC MARIANA ISLANDS REGION
P: 25SEP2022 146845 17.0N 147.0E 4.0-5.5 BAAAA No. Marianas
NEIC reported these earthquakes of M 5.1 and M 5.1 in the Mariana Islands were felt with intensity II-III in the area(s) of the Mariana Islands in Mangilao, and Tinian, Mariana Islands and Guam.
CENTRAL AND SOUTH AMERICA
O: 28SEP2022 20:03:58 14.3S 73.6W mb=4.7 EMSC CENTRAL PERU
P: 24SEP2022 147005 14.0S 71.0W 4.0-5.6 BACAA Central Peru
O: 28SEP2022 17:55:59 15.9N 95.2W ML=4.1 EMSC OFFSHORE OAXACA, MEXICO
P: 29SEP2022 146848 16.0N 96.0W 3.5-5.3 AAAAA Oaxaca, Mexico
O: 28SEP2022 17:52:23 16.1N 97.5W ML=4.1 EMSC OAXACA, MEXICO
P: 24SEP2022 146847 16.0N 98.0W 3.5-5.2 BAAAA Oaxaca, Mexico
O: 29SEP2022 05:47:25 16.9S 71.9W ML=4.0 EMSC SOUTHERN PERU
P: 27SEP2022 147014 18.0S 72.0W 4.0-5.4 ABAAA So. Peru/Bolivia
O: 28SEP2022 09:53:12 3.1S 77.0W mb=4.4 EMSC PERU-ECUADOR BORDER REGION
P: 29SEP2022 146805 4.0S 80.0W 4.0-5.5 AACAA Ecuador
O: 29SEP2022 04:43:00 12.8N 88.8W ML=4.1 EMSC OFFSHORE EL SALVADOR
O: 29SEP2022 04:27:00 12.8N 88.8W ML=4.1 EMSC OFFSHORE EL SALVADOR
P: 26SEP2022 146843 12.0N 88.0W 3.5-5.6 BAAAA Nicaragua
O: 29SEP2022 04:09:32 17.6N 103.4W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 28SEP2022 09:36:42 18.1N 103.2W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 28SEP2022 10:02:50 18.1N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 28SEP2022 12:52:46 18.1N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 28SEP2022 15:53:01 18.1N 103.4W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 29SEP2022 04:33:55 18.1N 103.4W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 28SEP2022 20:07:03 18.2N 103.5W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 28SEP2022 10:39:22 18.3N 103.4W mb=4.2 EMSC MICHOACAN, MEXICO
P: 28SEP2022 146841 18.0N 104.0W 3.5-5.5 AAAAA Michoacan, Mexico
NEIC reported this earthquake of M 4.2 in Michoacan, Mexico was felt with intensity II-III in the area(s) of Michoacan, Mexico in Morelia, in Guadalajara, Jalsico.
O: 28SEP2022 19:48:39 17.7N 61.7W Mw=5.1 EMSC ANTIGUA AND BARBUDA REGION
P: 26SEP2022 146834 17.0N 60.0W 3.0-5.2 AABAA Leeward Islands
O: 28SEP2022 09:09:00 18.6N 73.3W ML=3.4 EMSC HAITI REGION
P: 25SEP2022 146852 19.0N 74.0W 3.4-5.1 BAAAA Puerto Rico
O: 28SEP2022 11:47:51 25.6S 70.7W mb=4.4 EMSC OFFSHORE ANTOFAGASTA, CHILE
P: 23SEP2022 147023 26.0S 71.0W 4.0-5.9 BAAAA Coast Central Chile
NEIC reported this earthquake of M 4.4 in Antofagasta, Chile was felt with intensity II-III in the area(s) of Antofagasta, Chile in Taltal.
O: 28SEP2022 20:49:06 28.1N 112.3W ML=3.4 EMSC GULF OF CALIFORNIA
O: 28SEP2022 15:13:46 45.8S 76.0W mb=4.7 EMSC OFF COAST OF AISEN, CHILE
O: 28SEP2022 21:37:56 17.9N 61.6W ML=4.2 EMSC ANTIGUA AND BARBUDA REGION
O: 29SEP2022 00:36:19 17.9N 61.5W ML=3.9 EMSC ANTIGUA AND BARBUDA REGION
O: 28SEP2022 21:34:02 18.0N 61.4W Mw=4.3 EMSC ANTIGUA AND BARBUDA REGION
O: 28SEP2022 19:48:39 17.7N 61.7W Mw=5.1 EMSC ANTIGUA AND BARBUDA REGION
P: 26SEP2022 146834 17.0N 60.0W 3.0-5.2 AABAA Leeward Islands
AFRICA AND EUROPE
O: 29SEP2022 01:06:05 35.3N 22.9E mb=4.1 EMSC CENTRAL MEDITERRANEAN SEA
P: 29SEP2022 146888 34.0N 25.0E 3.0-4.9 ABBAA Crete
O: 29SEP2022 04:01:23 37.9N 20.1E ML=3.8 EMSC IONIAN SEA
P: 25SEP2022 146897 39.0N 20.0E 3.0-4.7 BBAAA No. Greece
O: 29SEP2022 00:29:25 40.4N 28.6E ML=3.4 EMSC WESTERN TURKEY
P: 27SEP2022 146959 41.0N 28.0E 3.0-5.2 AAAAA Romania/NW Turkey
O: 28SEP2022 14:55:50 40.8N 42.8E ML=3.3 EMSC EASTERN TURKEY
P: 18SEP2022 146663 40.0N 44.0E 3.5-4.9 CAAAA Caucasus/Caspian Sea
No significant (M>=5) or unusual earthquakes were reported in Europe today.
SOUTHWEST PACIFIC
O: 28SEP2022 16:11:29 17.5S 178.9W mb=4.3 EMSC FIJI REGION
P: 23SEP2022 147017 17.0S 179.0W 4.0-5.8 BAAAA Tonga Islands
P: 30SEP2022 147017 18.0S 180.0W 4.0-5.6 AAAAA Tonga Islands
O: 29SEP2022 00:42:37 14.0S 166.8E mb=4.7 EMSC VANUATU
P: 26SEP2022 147020 14.0S 167.0E 4.0-5.4 BAAAA Vanuatu Islands
O: 29SEP2022 05:43:12 19.9S 169.7E mb=4.1 EMSC VANUATU
P: 27SEP2022 147025 21.0S 171.0E 4.0-5.4 ABBAA Loyalty Islands
OCEAN RIDGES
O: 28SEP2022 22:34:48 8.5N 102.7W Mw=5.5 EMSC NORTHERN EAST PACIFIC RISE
O: 29SEP2022 04:11:26 60.8S 20.2W mb=5.4 EMSC EAST OF SOUTH SANDWICH ISLANDS
O: 29SEP2022 03:03:24 60.9S 20.1W Mw=6.7 EMSC EAST OF SOUTH SANDWICH ISLANDS
P: 20SEP2022 146791 61.0S 22.0W 4.0-5.6 CAAAA Southern Ocean
O: 28SEP2022 07:13:15 53.6N 35.1W mb=4.4 EMSC REYKJANES RIDGE
O: 28SEP2022 10:59:47 53.6N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 14:13:46 53.6N 35.3W Mw=5.1 EMSC REYKJANES RIDGE
O: 29SEP2022 02:06:46 53.6N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 07:59:37 53.7N 35.5W mb=4.9 EMSC REYKJANES RIDGE
O: 28SEP2022 12:30:43 53.7N 35.6W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 21:11:18 53.7N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 29SEP2022 06:58:40 53.7N 35.5W mb=4.7 EMSC REYKJANES RIDGE
O: 28SEP2022 12:49:10 53.8N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 13:20:52 53.8N 35.3W mb=4.4 EMSC REYKJANES RIDGE
O: 28SEP2022 17:56:23 53.8N 35.2W mb=4.4 EMSC REYKJANES RIDGE
O: 28SEP2022 23:42:41 53.8N 35.8W mb=4.5 EMSC REYKJANES RIDGE
O: 29SEP2022 04:45:07 53.8N 35.2W mb=4.8 EMSC REYKJANES RIDGE
O: 29SEP2022 05:38:52 53.8N 35.4W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 09:06:05 53.9N 35.4W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 09:50:58 53.9N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 28SEP2022 10:03:05 53.9N 35.2W Mw=5.1 EMSC REYKJANES RIDGE
O: 29SEP2022 00:38:28 53.9N 35.3W mb=4.9 EMSC REYKJANES RIDGE
O: 29SEP2022 06:36:03 53.9N 35.2W Mw=5.0 EMSC REYKJANES RIDGE
O: 29SEP2022 04:08:23 54.0N 35.3W mb=5.0 EMSC REYKJANES RIDGE
O: 29SEP2022 00:34:29 54.1N 35.3W mb=4.5 EMSC REYKJANES RIDGE
O: 29SEP2022 02:24:00 53.5N 35.2W Mw=5.1 EMSC REYKJANES RIDGE
P: 26SEP2022 146979 54.0N 35.0W 4.0-5.7 BAAAA North Mid-Atlantic Ridge
ZEALANDIA AND AUSTRALIA REGION
O: 28SEP2022 16:45:42 33.4S 179.4E ML=4.2 EMSC SOUTH OF KERMADEC ISLANDS
P: 23SEP2022 147037 37.0S 178.0E 3.0-4.7 BCBAA North Island, N.Z.
JAPAN AND KURIL ISLANDS
O: 29SEP2022 04:17:48 28.6N 142.5E mb=4.9 EMSC BONIN ISLANDS, JAPAN REGION
P: 27SEP2022 146857 28.0N 143.0E 4.0-5.7 AAAAA Bonin Islands
O: 28SEP2022 10:32:17 32.4N 142.7E mb=4.5 EMSC IZU ISLANDS, JAPAN REGION
P: 25SEP2022 146902 33.0N 142.0E 4.0-5.4 BAAAA Off East Coast Honshu
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 29SEP2022 04:49:22 34.6N 116.6W Ml=2.2 EMSC SOUTHERN CALIFORNIA
P: 28SEP2022 146915 34.6N 116.7W 2.5-4.6 AAAAA So. California
O: 28SEP2022 21:19:45 35.5N 118.4W Ml=2.0 EMSC CENTRAL CALIFORNIA
P: 29SEP2022 146916 35.3N 118.6W 2.5-4.4 AAAAA So. California
O: 28SEP2022 21:07:43 37.4N 118.4W Md=2.4 EMSC CENTRAL CALIFORNIA
P: 30SEP2022 146876 37.5N 118.6W 2.5-4.4 AAAAA California/Nevada area
O: 28SEP2022 17:02:02 37.5N 121.6W Ml=3.4 EMSC NORTHERN CALIFORNIA
O: 28SEP2022 09:58:56 38.1N 122.0W Md=2.1 EMSC SAN FRANCISCO BAY AREA, CALIF.
P: 28SEP2022 146882 37.7N 121.9W 2.5-4.5 AAAAA Central California
O: 29SEP2022 03:00:14 38.2N 117.9W ml=2.9 EMSC NEVADA
P: 26SEP2022 146876 37.8N 118.4W 2.5-4.4 BAAAA California/Nevada area
O: 28SEP2022 15:52:10 38.6N 119.5W Md=2.3 EMSC CENTRAL CALIFORNIA
P: 28SEP2022 146878 38.8N 119.6W 2.5-4.8 AAAAA California/Nevada area
O: 28SEP2022 21:28:02 38.8N 122.8W Md=2.1 EMSC NORTHERN CALIFORNIA
P: 30SEP2022 146883 38.7N 122.7W 2.5-4.6 AAAAA Central California
O: 29SEP2022 01:04:16 39.2N 120.5W Md=2.0 EMSC NORTHERN CALIFORNIA
P: 27SEP2022 146878 39.3N 120.0W 2.5-4.4 AAAAA California/Nevada area
O: 28SEP2022 11:50:23 40.3N 124.9W ML=2.2 EMSC OFFSHORE NORTHERN CALIFORNIA
P: 29SEP2022 146950 40.3N 124.7W 2.5-4.7 AAAAA Off Coast of No. Calif
ALASKA
No events of M>=3 were located in Alaska today.
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: 28SEP2022 18:51:50 31.7N 104.6W ML=2.0 EMSC WESTERN TEXAS
O: 28SEP2022 19:45:24 31.7N 104.4W ML=2.0 EMSC WESTERN TEXAS
O: 29SEP2022 02:16:42 31.7N 104.4W ML=2.0 EMSC WESTERN TEXAS
O: 29SEP2022 04:25:54 31.7N 104.4W ML=2.3 EMSC WESTERN TEXAS
O: 28SEP2022 10:24:17 31.7N 104.3W ML=2.0 EMSC WESTERN TEXAS
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 AAAAA SW U.S.A
EASTERN U.S./CANADA
O: 28SEP2022 20:03:17 36.2N 95.9W ML=2.0 EMSC TULSA URBAN AREA, OKLAHOMA
P: 25SEP2022 146921 36.0N 97.0W 2.0-4.1 BAAAA Southern Plains
HAWAII
No earthquakes of M>=3 were located in Hawaii.
MODERATE QUAKES SHAKE BAJA CALIFORNIA, MEXICO AND CENTRAL PHILIPPINES
EARTHQUAKE SUMMARY FOR SEPTEMBER 27, 2022
An M 5.4 occurred today in the Baja Peninsula of Mexico today. NEIC reported it was felt with light intensity in Baja California at Santa Rosalia, Tlalnepantly and Obregon, Sonora. This may be related to the recent landfall of Hurricane Ida in southwestern Florida and Hurricane Fiona as noted in this summary in previous issues:
"Hurricane Fiona continued north of the Turks and Cacos Islands near Bermuda as a category 4 storm with winds up to 130 kts. It is expected to track to the north making landfall with the North American Continental slope and rise in the next day. This could help promote seismicity along the western edge of the North American Plate and may have helped trigger the M 7.6 mainshock of September 19 and the 6.8 aftershock in Mexico today. The area of northern California and north could see enhanced seismicity” (September 25, 2022)
And
"Hurricane Fiona continued over Nova Scotia today with winds up to 100 kts. It is expected to track to the north making landfall with Nova Scotia today. This appears to be one of the strongest storms to hit Nova Scotia in recent years. This could help promote seismicity along the western edge of the North American Plate. The area of northern California and north could see enhanced seismicity at this time. Some enhanced seismicity may also occur in eastern U.S. and Canada as this storm moves north” (September 26, 2022)
Iand
"Hurricane Ian (TD 9) continued South of Cuba with winds up to 105 kts. It is expected to track to the west and north over the next several days reaching as a hurricane. It could make landfall near Tampa, Florida. The area is under mandatory evacuation orders preceding this hurricane which is the strongest to hit the Tampa area in decades. Enhanced seismicity may occur in the Caribbean area and central America while this storm is in the area.” (September 27, 2022)
This is the strongest earthquake within about 200 km of this epicenter since an M 6.3 on January 19, 2018. Earthquakes of M 5.4 also occurred in the region on July 31, 2021 and January 21, 2022. This area had been expected in forecast 146586 to see enhanced seismicity towards the end of September, 2022. This earthquake like the M 5.3 in Turkey today is located at 104 degrees from the M 7.6 in New Guinea of September 10, 2022 and was probably promoted by energy from that source.
O: 28SEP2022 01:18:26 27.1N 111.1W Mw=5.4 EMSC GULF OF CALIFORNIA
O: 28SEP2022 02:17:14 26.9N 111.4W mb=4.2 EMSC GULF OF CALIFORNIA
P: 17SEP2022 146586 28.0N 112.0W 3.5-5.1 CAAAA Gulf of California
Earthquakes of M 5.3 and 4.7 with smaller aftershocks occurred today in northern Mindanao, Philippines. NEIC reported it was felt lightly in Maygatasan, Caraga, Philippines. This epicenter is near the location where Typhoon Noru made landfall two days as and may have been promoted by energy associated with that storm as noted in previous issues of this summary:
"Super-Typhoon Noru (TD 18W) continued today over Luzon, Philippines with winds up to 130 kts. It is expected to track to the west and could help promote enhanced seismicity in the Philippines most likely around September 25-26." (September 24-26, 2022)
The last earthquake within about 150 km of this epicenter in the Philippines with larger or equal magnitude was an M 5.5 on June 2, 2022 and also on April 3, 2022. The last of significantly larger magnitude in this area was an M 6.0 on November 15, 2020. Forecast 146794 had expected today's event was likely in this area around September 30.
O: 28SEP2022 02:39:27 9.3N 126.3E mb=4.7 EMSC MINDANAO, PHILIPPINES
O: 28SEP2022 01:12:26 9.4N 126.5E Mw=5.2 EMSC MINDANAO, PHILIPPINES
O: 28SEP2022 01:12:26 9.4N 126.5E Mw=5.3 ANSS MINDANAO, PHILIPPINES
P: 30SEP2022 146794 9.0N 126.0E 4.0-5.6 AAAAA Central Philippines
An M 5.3 was also felt in eastern Turkey near the Georgia border today. NEIC reported these earthquake of M 5.3 and 4.4 in Eastern Turkey was felt with intensity CI in Susuz, Kars, Turkey and II-III in the area(s) of in Tbilisi and Batumi, Ajaria, Georgia. A similar M 5.3 hit within about 200 km on February 13, 2022 but the only earthquake of larger magnitude in this area of eastern Turkey in the past thirty-two years was an M 5.5 on December 16, 1990. Forecasts 146663 and 146931 had expected today's activity was likely in this area at the end of September, 2022. This earthquake like the M 5.4 in Baja Mexico today is located at 104 degrees from the M 7.6 in New Guinea of September 10, 2022 and was probably promoted by energy from that source.
O: 27SEP2022 14:08:34 40.7N 42.9E Mw=5.3 EMSC EASTERN TURKEY
O: 27SEP2022 14:24:40 40.8N 42.9E mb=4.3 EMSC EASTERN TURKEY
O: 27SEP2022 14:43:36 40.8N 42.8E ML=4.0 EMSC EASTERN TURKEY
O: 27SEP2022 16:16:54 40.8N 42.9E mb=4.4 EMSC EASTERN TURKEY
P: 18SEP2022 146663 40.0N 44.0E 3.5-4.9 CAAAA Caucasus/Caspian Sea
P: 28SEP2022 146931 43.0N 44.0E 3.5-5.0 ACAAA Caucasus/Caspian Sea
The strongest earthquake in the U.S. or Canada today was an M 4.5 in Hawaii. NEIC reported it was felt with intensity III in Hawaii at Hawaii National Park, Volcano, Naalehu, Pahoa, Mountain View, Hilo, Kurtistown, Holualoa, and Keaau. This is the strongest earthquake in the current eruption of Kilauea since an M 4.6 on April 15, 2022. This earthquake occurred within minutes of local solar noon and was probably promoted by strong tidal stresses associated with the new moon which maximize near this hour. Forecast 146833 had expected this event within about 25 km was likely around September 24-28.
O: 27SEP2022 22:43:58 19.3N 155.4W mb=4.5 EMSC ISLAND OF HAWAII, HAWAII
P: 24SEP2022 146833 19.3N 155.2W 3.0-4.5 BAAAA Hawaii
P: 28SEP2022 146833 18.8N 155.2W 3.0-4.5 AAAAA Hawaii
An M 3.8 was also widely felt in Central California north of Los Angeles in the Bakersfield area today. NEIC reported this earthquake of M 3.7 in Central California near Lake Isabella was felt with intensity II-III in the area(s) of Central California near Lake Isabella, Bodfish, Weldon, Caliente, Wofford Heights, Kernville, Onyx, Glennville, Bakersfield and Tehachapi. This is the strongest earthquake in the Bakersfield area of California since an M 3.8-3.9 on August 27, 2021 and an M 3.8 on July 17, 2022. The last event in the region of significantly larger magnitude was an M 4.3 on April 19, 2014. It occurred within minutes of local solar midnight and was probably promoted by tidal stresses with the new moon which maximize near this hour. Forecast 146916 had expected this event was likely within about 25 km of the epicenter around September 29. This earthquake is located at 104 degrees from the M 6.6 in Sichuan China of September 5, 2022 and at 103 degrees from the M 7.0 in Luzon, Philippines of July 27 and was probably promoted by energy from those sources.
O: 27SEP2022 08:03:38 35.5N 118.4W ML=3.8 EMSC CENTRAL CALIFORNIA
O: 27SEP2022 09:10:43 35.5N 118.4W ML=2.4 EMSC CENTRAL CALIFORNIA
O: 27SEP2022 13:29:33 35.5N 118.4W Ml=2.0 EMSC CENTRAL CALIFORNIA
O: 28SEP2022 00:19:01 35.8N 118.0W Ml=2.1 EMSC CENTRAL CALIFORNIA
O: 27SEP2022 12:53:59 35.3N 118.6W Ml=2.3 EMSC CENTRAL CALIFORNIA
P: 29SEP2022 146916 35.3N 118.6W 2.5-4.4 AAAAA So. California
The strong swarm of earthquakes in the Reykjanes Ridge south of Iceland continued today with more than 30 events of M>=4.0. This summary noted this swarm in the past issue as:
"The strongest earthquake in the world today was an M 5.7 in the North Atlantic on the Reykjanes Ridge. It was followed by a strong series of aftershocks. This area had been expected to see enhanced seismicity at this time as the remnants of Hurricane Fiona passed over this epicenter today. This summary had expected this at this time in previous issues of this summary as:
"Hurricane Fiona continued in the North Atlantic today west of the mid-Atlantic Ridge with winds up to 50 km. This storm did considerable damage and flooding in Nova Scotia and Newfoundland, Canada as it hit that region as the strongest storm in decades in the area. As it moves past Nova Scotia the remnants are expected to track to the east reaching the Northern Mid-Atlantic Ridge in the next day or two near 54N 35W. The Reykjanes Ridge in this area is likely to see enhanced seismicity as Fiona passes this area." (September 25-26, 2022)
HUR FIONA 2022-09-27 00:00 UT 54.9N 34.2W 40 kts Northern Mid-Atlantic
This is the strongest activity within about 200 km of this epicenter in the Reykjanes area since an M 6.8 on February 16, 1998. That was the only earthquake in this region with M>=5.7 in at least 30 years. Forecast 146979 had expected this activity was likely within about 25 km of this epicenter was likely around September 26. This activity is at 143 degrees from the M 7.0 in the Loyalty Islands of September 14, 2022 and at 101-105 degrees from the M 6.9 in Taiwan of September and the M 7.0 in Luzon, Philippines of July 27, 2022 and near the sixth node (60 degrees) from the M 7.6 in Michoacan Mexico of September 19 and was probably promoted by energy from those source." (September 26-27, 2022) This activity is located at 143-144 degrees from the M 7.0 in the Loyalty Islands of September 14 and at 102 degrees from the M 6.9 in Taiwan of September 18 and was probably promoted by energy from that source.
O: 27SEP2022 07:25:45 53.6N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 00:55:09 53.7N 35.4W mb=4.9 EMSC REYKJANES RIDGE
O: 28SEP2022 02:22:36 53.7N 35.2W mb=4.5 EMSC REYKJANES RIDGE
O: 28SEP2022 06:09:47 53.7N 35.1W mb=4.7 EMSC REYKJANES RIDGE
O: 27SEP2022 13:21:35 53.8N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 27SEP2022 19:04:48 53.8N 35.2W mb=4.7 EMSC REYKJANES RIDGE
O: 27SEP2022 19:53:44 53.8N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 27SEP2022 21:09:54 53.8N 35.4W mb=4.8 EMSC REYKJANES RIDGE
O: 27SEP2022 22:28:52 53.8N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 23:13:32 53.8N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 28SEP2022 00:22:52 53.8N 35.9W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 02:55:24 53.8N 36.1W mb=4.5 EMSC REYKJANES RIDGE
O: 28SEP2022 03:41:36 53.8N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 13:07:35 53.9N 35.2W mb=4.8 EMSC REYKJANES RIDGE
O: 27SEP2022 15:55:52 53.9N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 15:55:52 53.9N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 21:18:19 53.9N 35.3W mb=4.9 EMSC REYKJANES RIDGE
O: 27SEP2022 13:46:51 54.0N 35.1W mb=4.5 EMSC REYKJANES RIDGE
O: 28SEP2022 01:43:26 54.0N 35.2W mb=4.8 EMSC REYKJANES RIDGE
O: 28SEP2022 01:43:26 54.0N 35.2W mb=4.8 EMSC REYKJANES RIDGE
O: 28SEP2022 06:46:21 54.0N 35.2W mb=5.0 EMSC REYKJANES RIDGE
O: 27SEP2022 07:19:43 54.1N 35.7W mb=4.7 EMSC REYKJANES RIDGE
O: 27SEP2022 08:13:57 54.1N 35.4W mb=4.5 EMSC REYKJANES RIDGE
O: 27SEP2022 10:34:57 54.1N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 11:59:49 54.1N 35.2W mb=4.9 EMSC REYKJANES RIDGE
O: 27SEP2022 19:39:28 54.1N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 08:47:39 54.3N 34.8W mb=4.8 EMSC REYKJANES RIDGE
O: 27SEP2022 10:59:19 54.3N 35.1W mb=4.8 EMSC REYKJANES RIDGE
O: 28SEP2022 05:01:53 53.5N 35.4W mb=4.5 EMSC REYKJANES RIDGE
P: 26SEP2022 146979 54.0N 35.0W 4.0-5.7 AAAAA North Mid-Atlantic Ridge
Three other moderate earthquakes also occurred in the Atlantic area today. These included event of M 5.2 in the current series in the South Sandwich Islands and an M 4.7 in the current series in the southern Mid-Atlantic ridge. These had been forecast in forecasts 147012, 147029 and 147046 within about 100 km of these epicenter. A more unusual earthquake occurred in the northern Mid-Atlantic Ridge with M 5.0. This epicenter was under the location of Tropical Depression 11E over the past two days as noted in earlier issues of this summary:
"One disturbance is currently poised to become a hurricane in the mid-Atlantic. It are located at 15N 35W and moving to the west. NHC estimates it could reach cyclone status with 70% chance in the next two days." (September 27-28, 2022)
It is likely that stresses associated with TD 11E helped promote this seismicity in the northern Atlantic. Forecast 146842 had expected this event was likely within about 300 km around September 29. The M 5.0 occurred within minutes of local solar noon and was probably also promoted by strong tidal stresses with the new moon which maximize near this hour.
This activity is located at 145-146 degrees from the M 7.0 in the Loyalty Islands of September 14 and at 145-146 degrees from the Luzon quake of July 27, 2022 and was probably promoted by energy from those sources.
O: 27SEP2022 15:12:41 12.1N 43.9W mb=5.0 EMSC NORTHERN MID-ATLANTIC RIDGE
P: 29SEP2022 146842 15.0N 45.0W 4.0-5.8 ACAAA Mid-Atlantic Ridge
The activity in the southern Mid-Atlantic began shortly after the M 7.6 in Papua New Guinea of September 10, 2022 which is at 143 degrees distance and was probably promoted by energy from that source.
O: 27SEP2022 16:45:15 20.5S 11.6W mb=4.7 EMSC SOUTHERN MID-ATLANTIC RIDGE
P: 27SEP2022 147012 20.0S 11.0W 4.0-5.5 AAAAA So. Mid-Atlantic Ridge
P: 28SEP2022 147029 20.0S 12.0W 4.0-5.8 AAAAA So. Mid-Atlantic Ridge
O: 28SEP2022 06:34:26 58.0S 25.5W mb=5.2 EMSC SOUTH SANDWICH ISLANDS REGION
P: 29SEP2022 147046 57.0S 25.0W 4.0-6.1 AAAAA So. Sandwich Islands
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 27SEP2022 11:11:09 22.9N 121.2E ML=4.2 EMSC TAIWAN REGION
O: 27SEP2022 11:11:09 22.9N 121.2E ML=4.2 TAI Hualien, Taiwan
P: 26SEP2022 146869 23.0N 121.0E 4.0-5.4 AAAAA Taiwan
CWB reported this earthquake was felt with intensity IV in Taitung and I in Hualien and Nantou Counties, Taiwan.
O: 28SEP2022 05:41:25 36.8N 72.6E mb=4.3 EMSC PAKISTAN
P: 22SEP2022 146889 37.0N 72.0E 3.8-5.2 CAAAA Hindu Kush/Pakistan
P: 27SEP2022 146901 36.0N 75.0E 3.8-5.4 AABAA Northern India
O: 27SEP2022 21:20:28 42.3N 80.4E mb=4.3 EMSC KAZAKHSTAN-XINJIANG BORDER REG
O: 27SEP2022 17:26:44 42.5N 81.1E mb=4.0 EMSC NORTHERN XINJIANG, CHINA
P: 23SEP2022 146901 39.0N 78.0E 3.8-5.2 BCBAA Northern India
INDONESIA AND PHILIPPINES
O: 28SEP2022 03:46:36 0.2N 99.9E ML=4.8 EMSC NORTHERN SUMATRA, INDONESIA
P: 26SEP2022 146818 2.0S 100.0E 4.0-5.4 ACAAA So. of Sumatera
O: 28SEP2022 04:21:07 2.1N 126.2E mb=4.5 EMSC MOLUCCA SEA
P: 29SEP2022 146798 3.0N 127.0E 4.0-5.6 AAAAA Halmahera
O: 28SEP2022 06:03:10 4.3S 153.0E mb=4.7 EMSC NEW BRITAIN REGION, P.N.G.
P: 25SEP2022 146810 5.0S 153.0E 4.0-5.4 BAAAA New Britain
O: 27SEP2022 17:58:05 5.2S 125.6E ML=4.1 EMSC BANDA SEA
P: 27SEP2022 146804 3.0S 126.0E 4.0-5.6 ACAAA Ceram area
O: 28SEP2022 04:36:54 8.6S 111.3E ML=4.1 EMSC JAVA, INDONESIA
P: 29SEP2022 146816 9.0S 111.0E 4.0-5.7 AAAAA So. of Java
O: 27SEP2022 20:37:43 9.9S 114.9E ML=4.2 EMSC SOUTH OF BALI, INDONESIA
P: 23SEP2022 146816 9.0S 113.0E 4.0-5.6 BABAA So. of Bali
O: 28SEP2022 02:39:27 9.3N 126.3E mb=4.7 EMSC MINDANAO, PHILIPPINES
O: 28SEP2022 01:12:26 9.4N 126.5E Mw=5.2 EMSC MINDANAO, PHILIPPINES
P: 30SEP2022 146794 9.0N 126.0E 4.0-5.6 AAAAA Central Philippines
CENTRAL AND SOUTH AMERICA
O: 27SEP2022 11:19:27 14.5N 94.2W ML=4.0 EMSC OFF COAST OF CHIAPAS, MEXICO
O: 27SEP2022 15:44:56 15.0N 93.1W ML=4.0 EMSC OFFSHORE CHIAPAS, MEXICO
P: 27SEP2022 146827 16.0N 94.0W 3.5-5.1 AAAAA Chiapas, Mexico
O: 27SEP2022 13:30:54 17.3N 101.4W ML=4.0 EMSC OFFSHORE GUERRERO, MEXICO
P: 24SEP2022 146840 19.0N 101.0W 3.5-5.8 BBAAA Michoacan, Mexico
O: 28SEP2022 06:54:08 18.1N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 27SEP2022 17:59:37 18.2N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 28SEP2022 03:43:18 18.2N 103.0W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 27SEP2022 15:32:29 18.5N 104.6W ML=4.3 EMSC OFFSHORE COLIMA, MEXICO
O: 27SEP2022 08:35:43 18.1N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
P: 28SEP2022 146841 18.0N 104.0W 3.5-5.5 AAAAA Michoacan, Mexico
O: 28SEP2022 03:23:23 19.2S 69.9W mb=4.1 EMSC TARAPACA, CHILE
P: 28SEP2022 147014 19.0S 69.0W 4.0-5.5 AAAAA So. Peru/Bolivia
O: 27SEP2022 07:36:25 19.5N 69.9W ML=3.1 EMSC DOMINICAN REPUBLIC
O: 27SEP2022 07:21:18 19.3N 64.4W ML=3.4 EMSC VIRGIN ISLANDS REGION
O: 27SEP2022 07:21:18 19.3N 64.4W ML=4.0 ANSS VIRGIN ISLANDS REGION
P: 24SEP2022 146835 18.0N 64.0W 3.0-5.0 BBAAA Leeward Islands
NEIC reported this earthquake of M 4.0 in the Virgin Islands was felt with intensity II-III in the area(s) of San Juan, Puerto Rico.
O: 27SEP2022 17:25:36 19.5S 70.1W mb=4.5 EMSC TARAPACA, CHILE
P: 28SEP2022 147024 20.0S 70.0W 4.0-5.8 AAAAA So. Peru/Bolivia
O: 27SEP2022 17:48:06 23.2S 68.6W mb=4.4 EMSC ANTOFAGASTA, CHILE
P: 26SEP2022 147024 23.0S 69.0W 4.0-5.6 AAAAA Coast No. Chile
NEIC reported this earthquake of M 4.1 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile in Iquique, Tarapaca.
An M 4.5 also occurred in this region today and was reported with intensity III in Iquique and Arica, Tarapaca.
O: 28SEP2022 01:18:26 27.1N 111.1W Mw=5.4 EMSC GULF OF CALIFORNIA
O: 28SEP2022 02:17:14 26.9N 111.4W mb=4.2 EMSC GULF OF CALIFORNIA
P: 17SEP2022 146586 28.0N 112.0W 3.5-5.1 CAAAA Gulf of California
AFRICA AND EUROPE
O: 28SEP2022 01:50:12 35.8N 22.1E mb=4.5 EMSC CENTRAL MEDITERRANEAN SEA
P: 26SEP2022 146873 38.0N 23.0E 3.0-4.8 ACAAA Aegean Sea
O: 27SEP2022 14:08:34 40.7N 42.9E Mw=5.3 EMSC EASTERN TURKEY
O: 27SEP2022 14:24:40 40.8N 42.9E mb=4.3 EMSC EASTERN TURKEY
O: 27SEP2022 14:43:36 40.8N 42.8E ML=4.0 EMSC EASTERN TURKEY
O: 27SEP2022 16:16:54 40.8N 42.9E mb=4.4 EMSC EASTERN TURKEY
P: 18SEP2022 146663 40.0N 44.0E 3.5-4.9 CAAAA Caucasus/Caspian Sea
P: 28SEP2022 146931 43.0N 44.0E 3.5-5.0 ACAAA Caucasus/Caspian Sea
O: 27SEP2022 12:32:20 77.8N 7.9E Mw=3.5 EMSC SVALBARD REGION
O: 27SEP2022 09:52:00 78.8N 4.9E Mw=4.0 EMSC GREENLAND SEA
O: 27SEP2022 07:02:57 77.8N 8.2E Mw=3.3 EMSC SVALBARD REGION
P: 22SEP2022 147002 79.0N 7.0E 4.0-5.8 BBAAA Arctic Ocean Region
SOUTHWEST PACIFIC
O: 27SEP2022 12:00:59 13.0S 167.7E mb=4.4 EMSC SANTA CRUZ ISLANDS
P: 26SEP2022 147020 14.0S 167.0E 4.0-5.4 AAAAA Vanuatu Islands
O: 28SEP2022 04:48:00 22.8S 171.6E Mw=5.4 EMSC SOUTHEAST OF LOYALTY ISLANDS
P: 24SEP2022 147025 22.0S 171.0E 4.0-5.4 BAAAA Loyalty Islands
P: 27SEP2022 147025 21.0S 171.0E 4.0-5.4 ABAAA Loyalty Islands
OCEAN RIDGES
O: 27SEP2022 15:12:41 12.1N 43.9W mb=5.0 EMSC NORTHERN MID-ATLANTIC RIDGE
P: 29SEP2022 146842 15.0N 45.0W 4.0-5.8 ACAAA Mid-Atlantic Ridge
O: 27SEP2022 16:45:15 20.5S 11.6W mb=4.7 EMSC SOUTHERN MID-ATLANTIC RIDGE
P: 27SEP2022 147012 20.0S 11.0W 4.0-5.5 AAAAA So. Mid-Atlantic Ridge
P: 28SEP2022 147029 20.0S 12.0W 4.0-5.8 AAAAA So. Mid-Atlantic Ridge
O: 28SEP2022 06:34:26 58.0S 25.5W mb=5.2 EMSC SOUTH SANDWICH ISLANDS REGION
P: 29SEP2022 147046 57.0S 25.0W 4.0-6.1 AAAAA So. Sandwich Islands
O: 27SEP2022 07:25:45 53.6N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 00:55:09 53.7N 35.4W mb=4.9 EMSC REYKJANES RIDGE
O: 28SEP2022 02:22:36 53.7N 35.2W mb=4.5 EMSC REYKJANES RIDGE
O: 28SEP2022 06:09:47 53.7N 35.1W mb=4.7 EMSC REYKJANES RIDGE
O: 27SEP2022 13:21:35 53.8N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 27SEP2022 19:04:48 53.8N 35.2W mb=4.7 EMSC REYKJANES RIDGE
O: 27SEP2022 19:53:44 53.8N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 27SEP2022 21:09:54 53.8N 35.4W mb=4.8 EMSC REYKJANES RIDGE
O: 27SEP2022 22:28:52 53.8N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 23:13:32 53.8N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 28SEP2022 00:22:52 53.8N 35.9W mb=4.6 EMSC REYKJANES RIDGE
O: 28SEP2022 02:55:24 53.8N 36.1W mb=4.5 EMSC REYKJANES RIDGE
O: 28SEP2022 03:41:36 53.8N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 13:07:35 53.9N 35.2W mb=4.8 EMSC REYKJANES RIDGE
O: 27SEP2022 15:55:52 53.9N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 15:55:52 53.9N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 21:18:19 53.9N 35.3W mb=4.9 EMSC REYKJANES RIDGE
O: 27SEP2022 13:46:51 54.0N 35.1W mb=4.5 EMSC REYKJANES RIDGE
O: 28SEP2022 01:43:26 54.0N 35.2W mb=4.8 EMSC REYKJANES RIDGE
O: 28SEP2022 01:43:26 54.0N 35.2W mb=4.8 EMSC REYKJANES RIDGE
O: 28SEP2022 06:46:21 54.0N 35.2W mb=5.0 EMSC REYKJANES RIDGE
O: 27SEP2022 07:19:43 54.1N 35.7W mb=4.7 EMSC REYKJANES RIDGE
O: 27SEP2022 08:13:57 54.1N 35.4W mb=4.5 EMSC REYKJANES RIDGE
O: 27SEP2022 10:34:57 54.1N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 11:59:49 54.1N 35.2W mb=4.9 EMSC REYKJANES RIDGE
O: 27SEP2022 19:39:28 54.1N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 08:47:39 54.3N 34.8W mb=4.8 EMSC REYKJANES RIDGE
O: 27SEP2022 10:59:19 54.3N 35.1W mb=4.8 EMSC REYKJANES RIDGE
O: 28SEP2022 05:01:53 53.5N 35.4W mb=4.5 EMSC REYKJANES RIDGE
P: 26SEP2022 146979 54.0N 35.0W 4.0-5.7 AAAAA North Mid-Atlantic Ridge
O: 27SEP2022 12:32:20 77.8N 7.9E Mw=3.5 EMSC SVALBARD REGION
O: 27SEP2022 09:52:00 78.8N 4.9E Mw=4.0 EMSC GREENLAND SEA
ZEALANDIA AND AUSTRALIA REGION
O: 27SEP2022 16:54:19 45.5S 167.2E ML=3.9 EMSC SOUTH ISLAND OF NEW ZEALAND
O: 27SEP2022 16:54:19 45.5S 167.2E MS=3.9 GEONET Felt with weak intensity in the area
P: 25SEP2022 147042 45.0S 167.0E 3.0-5.0 AAAAA So. Island, N.Z.
GEONET reported this earthquake was felt with weak intensity in the area southwest of Te Anau, South Island. 2 reports of felt intensity came from the area east and north of the epicenter with 1 weak, 1 light, 0 moderate, 0 strong, 0 severe and 0 extreme shaking.
JAPAN AND KURIL ISLANDS
O: 27SEP2022 14:53:41 40.7N 142.7E mb=4.2 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 26SEP2022 146934 41.0N 141.0E 3.5-5.4 AABAA Hokkaido, Japan
NEIC reported this earthquake of M 4.2 in Northern Honshu, Japan was felt with intensity II-III in the area(s) of Northern Honshu, Japan in Misawa, Aomori.
O: 27SEP2022 13:36:52 44.5N 150.9E mb=4.6 EMSC EAST OF KURIL ISLANDS
P: 24SEP2022 146934 44.0N 149.0E 3.5-5.6 BABAA Hokkaido, Japan
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 27SEP2022 08:03:38 35.5N 118.4W ML=3.8 EMSC CENTRAL CALIFORNIA
O: 27SEP2022 09:10:43 35.5N 118.4W ML=2.4 EMSC CENTRAL CALIFORNIA
O: 27SEP2022 13:29:33 35.5N 118.4W Ml=2.0 EMSC CENTRAL CALIFORNIA
O: 28SEP2022 00:19:01 35.8N 118.0W Ml=2.1 EMSC CENTRAL CALIFORNIA
O: 27SEP2022 12:53:59 35.3N 118.6W Ml=2.3 EMSC CENTRAL CALIFORNIA
P: 29SEP2022 146916 35.3N 118.6W 2.5-4.4 AAAAA So. California
O: 27SEP2022 21:48:11 31.3N 115.3W ML=3.0 EMSC BAJA CALIFORNIA, MEXICO
P: 26SEP2022 146908 32.1N 116.4W 2.5-4.4 AAAAA So. California
O: 27SEP2022 13:02:57 34.4N 116.5W ML=3.1 EMSC SOUTHERN CALIFORNIA
O: 27SEP2022 13:02:57 34.4N 116.5W ML=3.3 ANSS SOUTHERN CALIFORNIA
P: 24SEP2022 146915 34.3N 116.5W 2.5-4.6 BAAAA So. California
P: 28SEP2022 146915 34.6N 116.7W 2.5-4.6 AAAAA So. California
NEIC reported this earthquake of M 3.3 in Southern California was felt with intensity II-III in the area(s) of Southern California in Landers, Yucca Valley, Big Bear City, Desert Hot Springs, Calimesa and Palm Desert.
O: 27SEP2022 19:15:23 36.7N 114.7W ml=2.1 EMSC NEVADA
P: 28SEP2022 146894 37.3N 114.9W 2.5-4.5 AAAAA Nevada area
O: 28SEP2022 06:32:30 36.6N 121.2W Md=2.2 EMSC CENTRAL CALIFORNIA
O: 27SEP2022 15:39:12 37.0N 121.6W ML=2.4 EMSC NORTHERN CALIFORNIA
O: 27SEP2022 15:27:10 37.0N 121.6W Md=2.4 EMSC NORTHERN CALIFORNIA
P: 24SEP2022 146881 36.7N 121.4W 2.5-4.8 BAAAA Central California
NEIC reported this earthquake of M 2.6 in Central California was felt with intensity II-III in the area(s) of Central California in Gilroy, Aromas, Watsonville, San Juan Bautista, Morgan Hill, Los Banos, Carmel, San Francisco and Isleton.
O: 28SEP2022 02:54:43 38.2N 116.8W ml=2.1 EMSC NEVADA
P: 26SEP2022 146877 37.8N 115.8W 2.5-4.5 AAAAA California/Nevada area
O: 27SEP2022 15:43:01 38.2N 117.9W ML=2.5 EMSC NEVADA
P: 26SEP2022 146876 37.8N 118.4W 2.5-4.4 AAAAA California/Nevada area
O: 27SEP2022 15:01:48 38.8N 122.8W Md=2.1 EMSC NORTHERN CALIFORNIA
P: 30SEP2022 146883 38.7N 122.7W 2.5-4.6 BAAAA Central California
ALASKA
O: 27SEP2022 08:24:03 62.7N 149.5W ML=3.2 EMSC CENTRAL ALASKA
P: 28SEP2022 146992 63.2N 145.5W 3.2-5.3 AABAA Central Alaska
O: 27SEP2022 11:17:05 63.2N 171.5W mb=3.4 EMSC ST. LAWRENCE ISLAND, ALASKA RE
PACIFIC NORTHWESTERN U.S./WESTERN CANADA
O: 27SEP2022 19:40:47 48.7N 128.9W MB=3.1 ECAN of Port Alice, BC
P: 24SEP2022 146963 48.9N 129.3W 2.8-5.3 BAAAA Vancouver Island area
ROCKY MOUNTAINS REGION
O: 27SEP2022 15:23:37 31.6N 104.3W ML=2.5 EMSC WESTERN TEXAS
O: 27SEP2022 20:56:08 31.6N 104.1W ML=2.2 EMSC WESTERN TEXAS
O: 27SEP2022 21:22:30 31.9N 103.9W ML=2.8 EMSC WESTERN TEXAS
O: 27SEP2022 14:44:49 31.6N 104.3W ML=3.1 EMSC WESTERN TEXAS
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 AAAAA SW U.S.A
O: 27SEP2022 16:06:03 33.0N 100.9W mb=2.4 EMSC WESTERN TEXAS
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 ABCAA SW U.S.A
O: 27SEP2022 21:17:48 44.8N 110.8W Ml=2.1 EMSC YELLOWSTONE NAT. PARK, WYOMING
P: 26SEP2022 146967 44.6N 110.8W 2.0-3.9 AAAAA Yellowstone/Wyoming
EASTERN U.S./CANADA
O: 27SEP2022 08:25:20 35.2N 97.7W ML=2.2 EMSC OKLAHOMA
P: 25SEP2022 146921 36.0N 97.0W 2.0-4.1 AAAAA Southern Plains
O: 27SEP2022 08:35:39 36.4N 90.9W mb=2.7 EMSC ARKANSAS
P: 27SEP2022 146896 38.0N 91.0W 2.0-4.1 ABAAA New Madrid area
NEIC reported this earthquake of M 2.8 in Arkansas was felt with intensity II-III in the area(s) of Arkansas in Biggers and Pocahantas.
O: 27SEP2022 08:54:16 42.9N 78.8W MB=1.8 ECAN of Buffalo, NY
P: 26SEP2022 146946 43.0N 77.0W 2.0-4.3 AABAA New York State
O: 26SEP2022 23:29:51 47.1N 76.3W MB=1.9 ECAN of Grand-Remous, QC
P: 24SEP2022 146946 47.0N 76.0W 2.0-4.3 AAAAA New York State
O: 27SEP2022 17:05:20 35.3N 97.8W mb=2.7 EMSC OKLAHOMA
O: 28SEP2022 00:41:30 36.3N 97.5W mb=2.4 EMSC OKLAHOMA
HAWAII
O: 27SEP2022 22:43:58 19.3N 155.4W mb=4.5 EMSC ISLAND OF HAWAII, HAWAII
P: 24SEP2022 146833 19.3N 155.2W 3.0-4.5 BAAAA Hawaii
P: 28SEP2022 146833 18.8N 155.2W 3.0-4.5 AAAAA Hawaii
STRONG EARTHQUAKE SERIES OCCURS AS FIONA HITS NORTH ATLANTIC RIDGE
EARTHQUAKE SUMMARY FOR SEPTEMBER 26, 2022
The strongest earthquake in the world today was an M 5.7 in the North Atlantic on the Reykjanes Ridge. It was followed by a strong series of aftershocks. This area had been expected to see enhanced seismicity at this time as the remnants of
Hurricane Fiona passed over this epicenter today. This summary had expected this at this time in previous issues of this summary as:
"Hurricane Fiona continued in the North Atlantic today west of the mid-Atlantic Ridge with winds up to 50 km. This storm did considerable damage and flooding in Nova Scotia and Newfoundland, Canada as it hit that region as the strongest storm in decades in the area. As it moves past Nova Scotia the remnants are expected to track to the east reaching the Northern Mid-Atlantic Ridge in the next day or two near 54N 35W. The Reykjanes Ridge in this area is likely to see enhanced seismicity as Fiona passes this area." (September 25-26, 2022)
HUR FIONA 2022-09-27 00:00 UT 54.9N 34.2W 40 kts Northern Mid-Atlantic
This is the strongest activity within about 200 km of this epicenter in the Reykjanes area since an M 6.8 on February 16, 1998. That was the only earthquake in this region with M>=5.7 in at least 30 years. Forecast 146979 had expected this activity was likely within about 25 km of this epicenter was likely around September 26. This activity is at 143 degrees from the M 7.0 in the Loyalty Islands of September 14, 2022 and at 101-105 degrees from the M 6.9 in Taiwan of September and the M 7.0 in Luzon, Philippines of July 27, 2022 and near the sixth node (60 degrees) from the M 7.6 in Michoacan Mexico of September 19 and was probably promoted by energy from those source.
O: 27SEP2022 01:59:00 53.8N 35.1W mb=4.3 EMSC REYKJANES RIDGE
O: 27SEP2022 03:05:35 53.8N 34.6W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 06:01:14 53.8N 35.0W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 18:21:57 53.9N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 26SEP2022 20:30:17 53.9N 35.4W Mw=5.3 EMSC REYKJANES RIDGE
O: 27SEP2022 03:58:03 53.9N 35.2W mb=4.4 EMSC REYKJANES RIDGE
O: 27SEP2022 06:45:06 53.9N 35.3W mb=4.5 EMSC REYKJANES RIDGE
O: 26SEP2022 09:59:57 54.0N 35.3W Mw=5.7 EMSC REYKJANES RIDGE
O: 26SEP2022 14:54:50 54.0N 34.9W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 15:45:13 54.0N 35.4W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 17:16:07 54.0N 35.3W mb=4.9 EMSC REYKJANES RIDGE
O: 26SEP2022 18:36:19 54.0N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 19:32:18 54.0N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 19:39:48 54.0N 35.3W mb=4.9 EMSC REYKJANES RIDGE
O: 26SEP2022 19:39:48 54.0N 35.3W mb=4.9 EMSC REYKJANES RIDGE
O: 26SEP2022 22:44:01 54.0N 35.2W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 23:05:45 54.0N 35.1W mb=4.7 EMSC REYKJANES RIDGE
O: 27SEP2022 04:42:08 54.0N 35.2W mb=4.7 EMSC REYKJANES RIDGE
O: 27SEP2022 05:26:48 54.0N 35.5W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 07:41:00 54.1N 35.2W mb=4.9 EMSC REYKJANES RIDGE
O: 26SEP2022 10:06:54 54.1N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 26SEP2022 14:01:23 54.1N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 14:49:20 54.1N 35.4W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 14:49:20 54.1N 35.4W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 14:59:51 54.1N 35.0W mb=4.8 EMSC REYKJANES RIDGE
O: 26SEP2022 18:14:40 54.1N 35.5W mb=4.9 EMSC REYKJANES RIDGE
O: 27SEP2022 04:34:29 54.1N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 06:10:38 54.1N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 14:07:10 54.3N 35.2W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 15:18:46 53.8N 35.0W mb=4.8 EMSC REYKJANES RIDGE
P: 26SEP2022 146979 54.0N 35.0W 4.0-5.7 AAAAA North Mid-Atlantic Ridge
The strongest earthquake in the U.S. or Canada today was an M 5.2 in the Rat Islands, Aleutian. The last earthquake in the Rat Islands with M>=5.2 was an M 5.2 on August 14, 2022. These are probably aftershocks of the M 6.3 on June 4, 2022. Forecast 146981 had expected today's event within about 50 km was likely around September 24.
O: 26SEP2022 11:39:19 51.5N 178.5E mb=5.2 EMSC RAT ISLANDS, ALEUTIAN ISLANDS
P: 24SEP2022 146981 51.0N 178.0E 4.0-5.6 AAAAA Rat Islands
An earthquake of M 4.6-4.7 was also reported felt in South Island, New Zealand today. GEONET reported this earthquake was felt with moderate intensity in the area of Arthur's Pass, South Island, New Zealand. 1007 felt reports were published including 242 of weak and 453 of light shaking; 281 moderate; 30 strong; 1 severe and 0 extreme shaking in northern South Island. It occurred within minutes of local solar midnight and was probably promoted by high tides with the new moon which maximize near this hour. Forecast 147041 had expected this event within about 50 km was likely around
September 27.
O: 26SEP2022 12:52:52 42.4S 171.3E ML=4.6 EMSC SOUTH ISLAND OF NEW ZEALAND
O: 26SEP2022 12:52:52 42.4S 171.3E MS=4.7 GEONET Felt with moderate intensity
P: 27SEP2022 147041 42.0S 172.0E 3.0-5.3 AAAAA So. Island, N.Z.
The second strongest earthquake in the world today was an M 5.4-5.5 in Vanuatu. NEIC reported this earthquake of M 5.5 in Vanuatu was felt with intensity II-III in the area(s) of Vanuatu in Luganville, Sanma. Like the other significant earthquakes enumerated above, this event also occurred within minutes of local solar midnight and was probably promoted by high tidal stresses with the new moon which maximize near this hour. Forecast 147020 had expected this event within about 50 km was likely around September 24.
O: 26SEP2022 13:58:02 15.2S 168.3E Mw=5.4 EMSC VANUATU
P: 24SEP2022 147020 15.0S 168.0E 4.0-5.4 AAAAA Vanuatu Islands
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 26SEP2022 12:57:37 41.1N 83.2E mb=4.2 EMSC SOUTHERN XINJIANG, CHINA
P: 21SEP2022 146937 40.0N 77.0E 4.0-5.5 BBCAA Kirgizstan/Xinjiang
O: 26SEP2022 13:59:27 32.4N 56.1E ML=4.0 EMSC CENTRAL IRAN
P: 30SEP2022 146867 28.0N 56.0E 3.5-4.9 BCAAA So. Iran/Persian Gulf
O: 27SEP2022 01:04:57 32.8N 73.5E mb=4.2 EMSC PAKISTAN
P: 28SEP2022 146905 34.0N 74.0E 3.8-5.2 ABAAA Pakistan
NEIC reported this earthquake of M 4.2 in Pakistan was felt with intensity II-III in the area(s) of Pakistan in Jhelum, Punjab and Muzafferabad Azad, Kashmir.
O: 26SEP2022 12:33:57 44.2N 82.3E mb=4.4 EMSC NORTHERN XINJIANG, CHINA
P: 21SEP2022 146937 40.0N 77.0E 4.0-5.5 BCCAA Kirgizstan/Xinjiang
O: 26SEP2022 18:02:20 55.7N 160.1E mb=4.8 EMSC KAMCHATKA PENINSULA, RUSSIA
P: 24SEP2022 146974 54.0N 162.0E 4.0-5.4 ABAAA E. of Kamchatka
O: 26SEP2022 15:07:53 35.9N 70.6E mb=4.3 EMSC HINDU KUSH REGION, AFGHANISTAN
P: 22SEP2022 146889 37.0N 72.0E 3.8-5.2 BBBAA Hindu Kush/Pakistan
INDONESIA AND PHILIPPINES
O: 26SEP2022 16:39:36 0.7S 122.5E ML=4.1 EMSC SULAWESI, INDONESIA
P: 29SEP2022 146792 0.0N 122.0E 4.0-5.5 BAAAA Celebes Sea
O: 26SEP2022 14:46:08 0.9N 126.6E mb=4.4 EMSC MOLUCCA SEA
P: 28SEP2022 146798 2.0N 128.0E 4.0-5.4 ABBAA Halmahera
O: 26SEP2022 21:11:32 6.5S 154.5E Mw=5.1 EMSC BOUGAINVILLE REGION, P.N.G.
P: 25SEP2022 146810 5.0S 153.0E 4.0-5.4 ABBAA New Britain
O: 26SEP2022 07:22:38 7.4S 120.4E ML=4.0 EMSC FLORES SEA
P: 26SEP2022 146806 7.0S 120.0E 4.0-5.4 AAAAA Flores Island area
O: 26SEP2022 18:00:53 9.3N 126.8E ML=4.1 EMSC MINDANAO, PHILIPPINES
P: 30SEP2022 146794 9.0N 126.0E 4.0-5.6 BAAAA Central Philippines
O: 26SEP2022 23:17:35 11.0S 113.4E mb=4.7 EMSC SOUTH OF JAVA, INDONESIA
P: 23SEP2022 146816 9.0S 113.0E 4.0-5.6 BBAAA So. of Bali
CENTRAL AND SOUTH AMERICA
O: 27SEP2022 00:33:08 14.8N 92.6W mb=4.1 EMSC OFFSHORE CHIAPAS, MEXICO
O: 26SEP2022 09:39:47 15.5N 92.3W ML=4.0 EMSC CHIAPAS, MEXICO
P: 24SEP2022 146827 15.0N 93.0W 3.5-5.1 AAAAA Chiapas, Mexico
O: 27SEP2022 02:39:59 15.5N 95.7W ML=4.1 EMSC OFFSHORE OAXACA, MEXICO
P: 29SEP2022 146848 16.0N 96.0W 3.5-5.3 AAAAA Oaxaca, Mexico
O: 26SEP2022 07:58:01 16.4N 93.8W ML=4.0 EMSC CHIAPAS, MEXICO
P: 27SEP2022 146827 16.0N 94.0W 3.5-5.1 AAAAA Chiapas, Mexico
O: 27SEP2022 05:30:05 18.1N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 26SEP2022 22:01:02 18.6N 103.8W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 26SEP2022 23:33:20 18.1N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
P: 24SEP2022 146841 18.0N 103.0W 3.5-6.1 AAAAA Michoacan, Mexico
O: 27SEP2022 04:41:22 19.0N 68.5W Md=3.8 EMSC DOMINICAN REPUBLIC REGION
P: 29SEP2022 146851 18.0N 68.0W 3.4-5.1 AAAAA Puerto Rico
O: 27SEP2022 05:36:47 33.1S 73.2W mb=4.4 EMSC OFF COAST OF VALPARAISO, CHILE
O: 26SEP2022 21:46:06 33.7S 72.6W mb=4.3 EMSC OFFSHORE VALPARAISO, CHILE
P: 29SEP2022 147033 34.0S 73.0W 4.0-5.8 BAAAA Central Chile
AFRICA AND EUROPE
No significant (M>=5) or unusual earthquakes were reported in Europe today.
SOUTHWEST PACIFIC
No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.
OCEAN RIDGES
O: 27SEP2022 01:59:00 53.8N 35.1W mb=4.3 EMSC REYKJANES RIDGE
O: 27SEP2022 03:05:35 53.8N 34.6W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 06:01:14 53.8N 35.0W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 18:21:57 53.9N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 26SEP2022 20:30:17 53.9N 35.4W Mw=5.3 EMSC REYKJANES RIDGE
O: 27SEP2022 03:58:03 53.9N 35.2W mb=4.4 EMSC REYKJANES RIDGE
O: 27SEP2022 06:45:06 53.9N 35.3W mb=4.5 EMSC REYKJANES RIDGE
O: 26SEP2022 09:59:57 54.0N 35.3W Mw=5.7 EMSC REYKJANES RIDGE
O: 26SEP2022 14:54:50 54.0N 34.9W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 15:45:13 54.0N 35.4W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 17:16:07 54.0N 35.3W mb=4.9 EMSC REYKJANES RIDGE
O: 26SEP2022 18:36:19 54.0N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 19:32:18 54.0N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 19:39:48 54.0N 35.3W mb=4.9 EMSC REYKJANES RIDGE
O: 26SEP2022 19:39:48 54.0N 35.3W mb=4.9 EMSC REYKJANES RIDGE
O: 26SEP2022 22:44:01 54.0N 35.2W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 23:05:45 54.0N 35.1W mb=4.7 EMSC REYKJANES RIDGE
O: 27SEP2022 04:42:08 54.0N 35.2W mb=4.7 EMSC REYKJANES RIDGE
O: 27SEP2022 05:26:48 54.0N 35.5W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 07:41:00 54.1N 35.2W mb=4.9 EMSC REYKJANES RIDGE
O: 26SEP2022 10:06:54 54.1N 35.3W mb=4.8 EMSC REYKJANES RIDGE
O: 26SEP2022 14:01:23 54.1N 35.3W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 14:49:20 54.1N 35.4W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 14:49:20 54.1N 35.4W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 14:59:51 54.1N 35.0W mb=4.8 EMSC REYKJANES RIDGE
O: 26SEP2022 18:14:40 54.1N 35.5W mb=4.9 EMSC REYKJANES RIDGE
O: 27SEP2022 04:34:29 54.1N 35.3W mb=4.6 EMSC REYKJANES RIDGE
O: 27SEP2022 06:10:38 54.1N 35.2W mb=4.6 EMSC REYKJANES RIDGE
O: 26SEP2022 14:07:10 54.3N 35.2W mb=4.7 EMSC REYKJANES RIDGE
O: 26SEP2022 15:18:46 53.8N 35.0W mb=4.8 EMSC REYKJANES RIDGE
P: 26SEP2022 146979 54.0N 35.0W 4.0-5.7 AAAAA North Mid-Atlantic Ridge
O: 26SEP2022 12:11:59 58.9S 25.5W mb=4.7 EMSC SOUTH SANDWICH ISLANDS REGION
P: 29SEP2022 147046 57.0S 25.0W 4.0-6.1 BBAAA So. Sandwich Islands
ZEALANDIA AND AUSTRALIA REGION
O: 26SEP2022 12:52:52 42.4S 171.3E ML=4.6 EMSC SOUTH ISLAND OF NEW ZEALAND
O: 26SEP2022 12:52:52 42.4S 171.3E MS=4.7 GEONET Felt with moderate intensity
P: 27SEP2022 147041 42.0S 172.0E 3.0-5.3 AAAAA So. Island, N.Z.
GEONET reported this earthquake was felt with moderate intensity in the area of Arthur's Pass, South Island, New Zealand. 1007 felt reports were published including 242 of weak and 453 of light shaking; 281 moderate; 30 strong; 1 severe and 0 extreme shaking in northern South Island.
It occurred within minutes of local solar midnight and was probably promoted
by high tides with the new moon which maximize near this hour.
O: 26SEP2022 10:58:53 45.1S 167.4E ML=4.0 EMSC SOUTH ISLAND OF NEW ZEALAND
P: 25SEP2022 147042 45.0S 167.0E 3.0-5.0 AAAAA So. Island, N.Z.
JAPAN AND KURIL ISLANDS
O: 26SEP2022 16:05:23 40.6N 142.9E Mw=4.9 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 26SEP2022 146934 41.0N 141.0E 3.5-5.4 AABAA Hokkaido, Japan
NEIC reported this earthquake of M 4.9 in Aomori, Japan was felt with intensity II-III in the area(s) of Aomori, Japan in Hachinohe, Misawa.
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 26SEP2022 21:32:36 31.1N 115.4W ML=3.0 EMSC BAJA CALIFORNIA, MEXICO
O: 26SEP2022 15:09:27 31.6N 116.0W Ml=2.7 EMSC BAJA CALIFORNIA, MEXICO
P: 26SEP2022 146908 32.1N 116.4W 2.5-4.4 AAAAA So. California
O: 26SEP2022 15:21:04 33.3N 116.2W Ml=2.1 EMSC SOUTHERN CALIFORNIA
P: 23SEP2022 146908 33.1N 116.2W 2.5-4.4 BAAAA So. California
O: 27SEP2022 01:46:16 35.3N 118.6W ML=2.7 EMSC CENTRAL CALIFORNIA
O: 27SEP2022 01:32:27 35.3N 118.6W Ml=2.1 EMSC CENTRAL CALIFORNIA
P: 24SEP2022 146916 35.6N 118.4W 2.5-4.4 BAAAA So. California
O: 27SEP2022 06:46:02 36.0N 119.9W Md=2.6 EMSC CENTRAL CALIFORNIA
P: 24SEP2022 146880 36.2N 120.8W 2.5-4.6 BAAAA Central California
O: 26SEP2022 17:07:38 39.8N 123.2W Md=2.5 EMSC NORTHERN CALIFORNIA
P: 27SEP2022 146949 40.0N 123.0W 2.5-4.8 AAAAA Northern California
O: 26SEP2022 23:08:21 40.4N 124.6W ML=2.5 EMSC OFFSHORE NORTHERN CALIFORNIA
P: 29SEP2022 146950 40.3N 124.7W 2.5-4.7 BAAAA Off Coast of No. Calif
ALASKA
O: 26SEP2022 11:39:19 51.5N 178.5E mb=5.2 EMSC RAT ISLANDS, ALEUTIAN ISLANDS
P: 24SEP2022 146981 51.0N 178.0E 4.0-5.6 AAAAA Rat Islands
O: 26SEP2022 11:43:02 58.2N 142.7W ML=3.5 EMSC GULF OF ALASKA
P: 28SEP2022 146984 59.0N 138.0W 3.0-4.9 AABAA Southeast Alaska
O: 26SEP2022 23:54:37 61.6N 151.9W ML=3.0 EMSC SOUTHERN ALASKA
P: 26SEP2022 146989 61.3N 150.9W 3.2-5.1 AAAAA Central Alaska
O: 26SEP2022 19:51:34 69.4N 144.0W ml=3.1 EMSC 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
O: 26SEP2022 18:06:46 47.9N 114.4W ML=2.9 EMSC WESTERN MONTANA
P: 27SEP2022 146941 47.7N 117.4W 2.0-3.9 AABAA Montana/Idaho
NEIC reported this earthquake of M 2.9 in Western Montana was felt with intensity II-III in the area(s) of Western Montana in Elmo, Dayton, Proctor, Kila, Kalispell.
O: 27SEP2022 04:13:17 31.7N 104.3W ML=2.7 EMSC WESTERN TEXAS
O: 26SEP2022 11:24:51 31.6N 104.1W ML=2.0 EMSC WESTERN TEXAS
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 AAAAA SW U.S.A
EASTERN U.S./CANADA
O: 26SEP2022 10:07:03 35.3N 97.9W ML=2.4 EMSC OKLAHOMA
P: 25SEP2022 146921 36.0N 97.0W 2.0-4.1 AAAAA Southern Plains
HAWAII
O: 26SEP2022 21:42:54 19.2N 155.5W ML=3.0 EMSC ISLAND OF HAWAII, HAWAII
P: 24SEP2022 146833 19.3N 155.2W 3.0-4.5 AAAAA Hawaii
EARTHQUAKES IN SVALBARD; HONDURAS AT NEW MOON
EARTHQUAKE SUMMARY FOR SEPTEMBER 25, 2022
A series of moderate earthquakes occurred today in the region of Svalbard north of Norway. This was not reported felt in this remote area. It continues a swarm in the area which began with an M 4.3 on September 18, 2022. These may be aftershocks of an M 5.9 that occurred in the Svalbard region on July 18. Forecast 147002 had expected this enhanced seismicity was likely around September 22 within about 100 km of today's epicenters. This activity occurred near local solar midnight with two within 10 minutes of the maximum new moon and was likely promoted by tidal energy associated with the new moon which occurred at the same time as noted in this and previous issues of this summary:
"The new moon arrived on September 25, 2022 at 21:54 UT. Longitudes which were at local solar noon at this time are located near 150W while those at local solar midnight are near 30E. These include areas of Southern Alaska and western U.S. and Canada in the west and eastern Europe including Greece and Turkey in the east. These areas may see significant increases in seismicity during the next week." (September 23-26, 2022)
This activity also precedes the arrival of Hurricane Fiona which is currently in the North Atlantic southwest of these epicenters near the Reykjanes Ridge south of Alaska. Expected activity with this hurricane was noted in this summary in previous issues as:
"Hurricane Fiona continued in the North Atlantic today west of the mid-Atlantic Ridge with winds up to 50 km. This storm did considerable damage and flooding in Nova Scotia and Newfoundland, Canada as it hit that region as the strongest storm in decades in the area. As it moves past Nova Scotia the remnants are expected to track to the east reaching the Northern Mid-Atlantic Ridge in the next day or two near 54N 35W. The Reykjanes Ridge in this area is likely to see enhanced seismicity as Fiona passes this area." (September 24-26, 2022)
This activity is at the fifth node (72 degrees) from the M 6.9 in Taiwan of September 18 and may have been promoted by energy from that source.
O: 25SEP2022 14:59:02 77.8N 8.2E mb=4.4 EMSC SVALBARD REGION
O: 25SEP2022 21:45:36 77.8N 8.1E Mw=4.0 EMSC SVALBARD REGION
O: 25SEP2022 20:50:41 77.9N 7.9E mb=4.2 EMSC SVALBARD REGION
O: 25SEP2022 14:01:40 78.0N 8.1E mb=4.5 EMSC SVALBARD REGION
O: 25SEP2022 21:47:41 77.7N 8.9E mb=4.2 EMSC SVALBARD REGION
P: 22SEP2022 147002 79.0N 7.0E 4.0-5.8 BBAAA Arctic Ocean Region
The strongest earthquake in the world today was an M 5.1 in Guatemala/Honduras. These earthquake, like those in Svalbard, also occurred within minutes of the new moon. The M 5.1 is the strongest in northern Guatemala or Honduras since an M 5.4 on August 2, 2022; and M 5.2 on August 25, 2021 and prior to that an M 5.5 on April 10, 2013. Forecast 146844 had expected today's events were likely within about 50 km around September 22. This activity was related to the passage of Hurricane Ian which was passing near this epicenter at the time of this activity and had been expected in this summary to increase seismicity in this region at this time:
“Hurricane Ian (TD 9) continued South of Cuba with winds up to 105 kts. It is expected to track to the west and north over the next several days reaching as a hurricane. It could make landfall near Tampa, Florida. The area is under mandatory evacuation orders preceding this hurricane which is the strongest to hit the Tampa area in decades. Enhanced seismicity may occur in the Caribbean area and central America while this storm is in the area.” (September 24-26. 2022)
O: 25SEP2022 21:28:16 15.8N 88.4W mb=4.7 EMSC GUATEMALA
O: 25SEP2022 21:30:24 15.8N 88.4W Mw=5.1 EMSC GUATEMALA
P: 22SEP2022 146844 16.0N 88.0W 3.5-5.1 BAAAA Nicaragua
Another event which may have been activated by Tropical Cyclone activity today occurred as an M 4.2 in the region of Haiti. Hurricane Fiona passed over this epicenter several days ago as noted in this summary at the time:
"TS Fiona continued north of Dominican Republic with winds up to 115 kts. Major flooding and complete power outage occurred on Puerto Rico today. It is expected to track to the north and west over the next several days. It could help promote enhanced seismicity in the region of Puerto Rico and the Dominican Republic in the next several days." (September 20-22, 2022)
This is the strongest earthquake in Haiti since an M 4.4 on May 29, 2022 and was probably triggered by effects related to the passage of Hurricane Fiona. A series of aftershocks followed an M 5.3 on January 24, 2022. These appear to be aftershocks of the M 7.3 in the area of August 14, 2021. Forecast 146852 had expected today's event within about 100 km was likely around September 25. This epicenter, like that of an M 4.7 in the Central Mid-Atlantic today is at 144 degrees from the M 7.6 in New Guinea of September 10. It is also at this distance from the M 7.0 in Luzon, Philippines of July 27, 2022 and may have been promoted by energy from those sources.
O: 25SEP2022 09:13:03 18.5N 73.2W ML=4.2 EMSC HAITI REGION
P: 25SEP2022 146852 19.0N 74.0W 3.4-5.1 AAAAA Puerto Rico
An M 5.1 also occurred in Mindanao and the Talaud Islands of Indonesia. It was followed by an M 4.5 aftershock. This occurred as Typhoon Noru was making landfall north of this in Luzon, Philippines as noted in this an previous issues of this summary:
"Super-Typhoon Noru (TD 18W) continued today over Luzon, Philippines with winds up to 130 kts. It is expected to track to the west and could help promote enhanced seismicity in the Philippines most likely around September 25-26." (September 24-26, 2022)
NEIC reported this earthquake of M 5.1 in Southern Mindanao, Philippines was felt with intensity II-III in the area(s) of Southern Mindanao, Philippines in Buayan. Forecast 146800 had expected this activity was likely within about 50 km of this epicenter around September 23.
O: 26SEP2022 02:53:44 4.6N 126.5E ML=4.5 EMSC KEPULAUAN TALAUD, INDONESIA
O: 25SEP2022 11:16:32 4.4N 126.1E Mw=5.1 EMSC KEPULAUAN TALAUD, INDONESIA
P: 23SEP2022 146800 4.0N 126.0E 4.0-5.4 AAAAA Mindanao, Philippines
An unusually large M 4.1 also occurred near local solar midnight in the Strait of Gibraltar. The last event of larger or equal magnitude in the Strait of Gibraltar was an M 4.9 on June 2 and prior to that an M 4.4 on January 1, 2022. Today's event occurred about 100 km north of the normal seismicity in this region. This epicenter is near the antipode of an M 4.8 (within about 100 km) in North Island, New Zealand of September 22, 2022. Forecast 146893 had expected today's event in the Strait of Gibraltar within about 100 km around September 26.
O: 26SEP2022 01:48:27 36.7N 4.4W mb=4.1 EMSC STRAIT OF GIBRALTAR
P: 26SEP2022 146893 37.0N 3.0W 3.5-5.2 AAAAA Morocco/Spain
The strongest earthquake in the U.S. or Canada today was an M 3.9 in the Andreanof Islands, Aleutians. The last earthquake in this area of larger magnitude than today's was an M 4.7 on September 2, 2022. Forecast 146971 had expected today's event within about 50 km was likely around September 26.
NEIC reported this earthquake of M 3.9 in the Andreanof Islands, Alaska was felt with intensity II-III in the area(s) of the Andreanof Islands, Alaska in Adak.
O: 25SEP2022 11:16:43 51.5N 177.0W mb=3.9 EMSC ANDREANOF ISLANDS, ALEUTIAN IS
P: 26SEP2022 146971 51.6N 177.6W 3.5-5.3 AAAAA Andreanoff Isls, Aleutians
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 25SEP2022 19:50:21 23.3N 121.5E ML=4.2 TAI Hualien, Taiwan
P: 26SEP2022 146869 23.0N 121.0E 4.0-5.4 AAAAA Taiwan
CWB reported this earthquake was felt with intensity III in Taitung, II in Hualien and I in Nantou, Kaohsiung, Chiayi and Changhua Counties, Taiwan.
O: 25SEP2022 12:02:48 18.3N 94.3E mb=4.5 EMSC MYANMAR
P: 28SEP2022 146823 19.0N 92.0E 4.0-5.4 BABAA Andaman Islands
O: 25SEP2022 15:25:15 27.8N 56.6E mb=5.1 EMSC SOUTHERN IRAN
O: 25SEP2022 23:04:25 27.6N 56.7E mb=4.3 EMSC SOUTHERN IRAN
P: 23SEP2022 146867 27.0N 56.0E 3.5-5.1 AAAAA So. Iran/Persian Gulf
NEIC reported this earthquake of M 5.0 in Southern Iran was felt with intensity II-III in the area(s) of the United Arab Emirates at Ras Al Khaimah.
O: 25SEP2022 15:26:26 51.4N 142.8E mb=4.8 EMSC SAKHALIN, RUSSIA
P: 22SEP2022 146982 54.0N 143.0E 4.0-5.4 BCAAA Sakhalin
NEIC reported this earthquake of M 4.8 in Sakhalin, Russia was felt with intensity II-III in the area(s) of Sakhalin, Russia in Nogliki.
INDONESIA AND PHILIPPINES
O: 26SEP2022 03:24:29 0.1S 129.9E ML=4.1 EMSC HALMAHERA, INDONESIA
P: 24SEP2022 146798 2.0N 129.0E 4.0-5.4 ACAAA Halmahera
O: 26SEP2022 03:33:32 2.0N 122.7E mb=4.4 EMSC MINAHASA, SULAWESI, INDONESIA
P: 29SEP2022 146792 0.0N 122.0E 4.0-5.5 BBAAA Celebes Sea
O: 25SEP2022 19:43:26 2.0S 119.0E mb=4.7 EMSC MAKASSAR STRAIT, INDONESIA
P: 29SEP2022 146792 0.0N 122.0E 4.0-5.5 BCCAA Celebes Sea
O: 25SEP2022 20:29:33 3.6S 140.0E ML=4.7 EMSC PAPUA, INDONESIA
P: 27SEP2022 146815 4.0S 140.0E 4.0-5.4 AAAAA Papua New Guinea
O: 26SEP2022 02:53:44 4.6N 126.5E ML=4.5 EMSC KEPULAUAN TALAUD, INDONESIA
O: 25SEP2022 11:16:32 4.4N 126.1E Mw=5.1 EMSC KEPULAUAN TALAUD, INDONESIA
P: 23SEP2022 146800 4.0N 126.0E 4.0-5.4 AAAAA Mindanao, Philippines
O: 25SEP2022 12:13:38 6.6S 129.9E mb=4.6 EMSC BANDA SEA
P: 27SEP2022 146822 7.0S 131.0E 4.0-5.4 AAAAA West Irian, PNG
CENTRAL AND SOUTH AMERICA
O: 25SEP2022 21:28:16 15.8N 88.4W mb=4.7 EMSC GUATEMALA
O: 25SEP2022 21:30:24 15.8N 88.4W Mw=5.1 EMSC GUATEMALA
P: 22SEP2022 146844 16.0N 88.0W 3.5-5.1 BAAAA Nicaragua
O: 25SEP2022 08:37:10 8.8N 83.0W ML=4.0 EMSC COSTA RICA
P: 29SEP2022 146796 8.0N 82.0W 3.5-5.2 BAAAA Costa Rica
O: 26SEP2022 01:20:47 9.8S 74.7W ML=4.3 EMSC CENTRAL PERU
P: 26SEP2022 147005 11.0S 74.0W 4.0-5.6 ABAAA Central Peru
O: 25SEP2022 11:38:17 15.0N 93.2W ML=4.2 EMSC OFFSHORE CHIAPAS, MEXICO
P: 24SEP2022 146827 15.0N 93.0W 3.5-5.1 AAAAA Chiapas, Mexico
O: 26SEP2022 03:41:59 3.4N 79.1W mb=4.3 EMSC SOUTH OF PANAMA
P: 25SEP2022 146795 5.0N 78.0W 4.0-5.6 ABAAA Colombia
O: 25SEP2022 08:18:29 16.0N 94.1W ML=4.0 EMSC OFFSHORE CHIAPAS, MEXICO
P: 27SEP2022 146827 16.0N 94.0W 3.5-5.1 AAAAA Chiapas, Mexico
O: 25SEP2022 09:54:44 16.7N 99.7W ML=4.0 EMSC GUERRERO, MEXICO
O: 25SEP2022 22:29:30 16.0N 98.4W ML=4.4 EMSC OFFSHORE OAXACA, MEXICO
P: 24SEP2022 146847 16.0N 98.0W 3.5-5.2 AAAAA Oaxaca, Mexico
O: 25SEP2022 11:19:15 16.9N 100.3W ML=4.0 EMSC OFFSHORE GUERRERO, MEXICO
P: 24SEP2022 146840 19.0N 101.0W 3.5-5.8 ACAAA Michoacan, Mexico
O: 26SEP2022 06:05:35 18.1N 103.2W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 25SEP2022 13:20:01 17.6N 103.3W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
P: 24SEP2022 146841 18.0N 103.0W 3.5-6.1 AAAAA Michoacan, Mexico
O: 25SEP2022 13:42:43 18.2N 68.0W Md=3.2 EMSC MONA PASSAGE, DOMINICAN REPUBL
P: 29SEP2022 146851 18.0N 68.0W 3.4-5.1 BAAAA Puerto Rico
O: 25SEP2022 09:13:03 18.5N 73.2W ML=4.2 EMSC HAITI REGION
P: 25SEP2022 146852 19.0N 74.0W 3.4-5.1 AAAAA Puerto Rico
O: 26SEP2022 03:49:00 19.2N 66.5W ML=3.1 EMSC PUERTO RICO REGION
P: 30SEP2022 146855 20.0N 67.0W 3.0-4.5 BAAAA Bahamas/No. Caribbean
O: 25SEP2022 17:46:03 19.3N 71.5W ML=3.3 EMSC DOMINICAN REPUBLIC
P: 26SEP2022 146856 20.0N 71.0W 3.0-4.8 AAAAA Bahamas/No. Caribbean
O: 25SEP2022 17:34:04 19.4S 69.1W mb=4.1 EMSC TARAPACA, CHILE
P: 28SEP2022 147014 19.0S 69.0W 4.0-5.5 BAAAA So. Peru/Bolivia
O: 25SEP2022 17:02:30 23.3S 67.3W ML=4.1 EMSC ANTOFAGASTA, CHILE
P: 28SEP2022 147021 24.0S 67.0W 4.0-5.6 BAAAA Argentina
O: 25SEP2022 18:37:45 25.4S 69.8W ML=4.0 EMSC ANTOFAGASTA, CHILE
P: 23SEP2022 147023 26.0S 71.0W 4.0-5.9 AAAAA Coast Central Chile
AFRICA AND EUROPE
O: 25SEP2022 14:59:02 77.8N 8.2E mb=4.4 EMSC SVALBARD REGION
O: 25SEP2022 21:45:36 77.8N 8.1E Mw=4.0 EMSC SVALBARD REGION
O: 25SEP2022 20:50:41 77.9N 7.9E mb=4.2 EMSC SVALBARD REGION
O: 25SEP2022 14:01:40 78.0N 8.1E mb=4.5 EMSC SVALBARD REGION
O: 25SEP2022 21:47:41 77.7N 8.9E mb=4.2 EMSC SVALBARD REGION
P: 22SEP2022 147002 79.0N 7.0E 4.0-5.8 BBAAA Arctic Ocean Region
O: 26SEP2022 01:48:27 36.7N 4.4W mb=4.1 EMSC STRAIT OF GIBRALTAR
P: 26SEP2022 146893 37.0N 3.0W 3.5-5.2 AAAAA Morocco/Spain
SOUTHWEST PACIFIC
O: 25SEP2022 11:36:56 11.9S 166.5E mb=4.5 EMSC SANTA CRUZ ISLANDS
P: 19SEP2022 146754 12.0S 167.0E 4.0-5.6 CAAAA Vanuatu Islands
O: 26SEP2022 01:18:27 19.4S 177.5W mb=4.8 EMSC FIJI REGION
P: 28SEP2022 147030 20.0S 176.0W 4.0-5.5 AABAA Tonga Islands
O: 25SEP2022 16:32:45 25.6S 176.2W mb=4.8 EMSC SOUTH OF FIJI ISLANDS
P: 27SEP2022 147026 29.0S 177.0W 4.0-5.4 ACAAA No. Kermadec Islands
No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.
OCEAN RIDGES
O: 25SEP2022 23:25:37 4.6N 62.6E mb=4.5 EMSC CARLSBERG RIDGE
P: 16SEP2022 146524 6.0N 61.0E 4.0-5.4 CBBAA Carlsberg Ridge
O: 26SEP2022 01:27:12 20.8S 11.6W mb=4.9 EMSC SOUTHERN MID-ATLANTIC RIDGE
O: 25SEP2022 18:37:04 20.6S 11.6W mb=4.7 EMSC SOUTHERN MID-ATLANTIC RIDGE
P: 27SEP2022 147012 20.0S 11.0W 4.0-5.5 AAAAA So. Mid-Atlantic Ridge
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: 25SEP2022 12:43:38 24.1N 127.1E mb=4.9 EMSC SOUTHEAST OF RYUKYU ISLANDS
O: 25SEP2022 19:05:11 25.0N 127.1E mb=4.9 EMSC RYUKYU ISLANDS, JAPAN
P: 23SEP2022 146866 25.0N 126.0E 4.0-5.4 AAAAA Ryukyu Islands
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 25SEP2022 15:21:07 32.5N 115.3W Ml=2.6 EMSC BAJA CALIFORNIA, MEXICO
P: 26SEP2022 146908 32.1N 116.4W 2.5-4.4 AAAAA So. California
NEIC reported this earthquake of M 2.6 in Baja California was felt with intensity II-III in the area(s) of Baja California in Mexicali and in Escondido, California.
O: 25SEP2022 12:51:31 34.0N 117.2W Ml=2.2 EMSC GREATER LOS ANGELES AREA, CALI
P: 22SEP2022 146914 34.1N 117.4W 2.5-4.6 BAAAA So. California
O: 25SEP2022 11:18:53 36.6N 121.1W Md=2.6 EMSC CENTRAL CALIFORNIA
O: 26SEP2022 01:33:18 36.8N 121.1W Md=2.0 EMSC CENTRAL CALIFORNIA
P: 24SEP2022 146881 36.7N 121.4W 2.5-4.8 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 in Los Banos.
O: 25SEP2022 14:47:25 37.7N 122.6W Md=2.2 EMSC OFFSHORE NORTHERN CALIFORNIA
P: 22SEP2022 146882 37.9N 122.0W 2.5-4.5 BAAAA Central California
P: 28SEP2022 146882 37.7N 121.9W 2.5-4.5 BAAAA Central California
O: 25SEP2022 08:15:05 38.5N 122.3W Md=2.0 EMSC NORTHERN CALIFORNIA
O: 26SEP2022 05:18:31 38.8N 122.7W Md=2.7 EMSC NORTHERN CALIFORNIA
O: 25SEP2022 08:15:05 38.5N 122.3W Md=2.0 EMSC NORTHERN CALIFORNIA
P: 22SEP2022 146883 38.9N 122.8W 2.5-4.6 BAAAA Central California
P: 30SEP2022 146883 38.7N 122.7W 2.5-4.6 BAAAA Central California
O: 25SEP2022 21:27:51 40.1N 122.7W Md=2.0 EMSC NORTHERN CALIFORNIA
P: 27SEP2022 146949 40.4N 122.2W 2.5-4.7 AAAAA Northern California
ALASKA
O: 25SEP2022 11:16:43 51.5N 177.0W mb=3.9 EMSC ANDREANOF ISLANDS, ALEUTIAN IS
P: 26SEP2022 146971 51.6N 177.6W 3.5-5.3 AAAAA Andreanoff Isls, Aleutians
O: 25SEP2022 22:35:56 56.9N 154.9W ml=3.4 EMSC KODIAK ISLAND REGION, ALASKA
P: 21SEP2022 146969 55.7N 156.9W 3.5-4.9 ABBAA Alaska Peninsula
P: 27SEP2022 146969 54.7N 156.9W 3.5-4.9 ABBAA Alaska Peninsula
O: 26SEP2022 03:11:06 60.2N 151.4W ML=3.2 EMSC KENAI PENINSULA, ALASKA
P: 26SEP2022 146989 60.5N 151.5W 3.2-5.1 AAAAA 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: 25SEP2022 12:48:59 31.7N 104.4W ML=2.0 EMSC WESTERN TEXAS
O: 25SEP2022 09:10:24 31.9N 103.4W ML=2.1 EMSC WESTERN TEXAS
O: 25SEP2022 14:06:39 32.1N 102.1W ML=2.4 EMSC WESTERN TEXAS
O: 25SEP2022 11:09:09 31.7N 104.3W ML=2.2 EMSC WESTERN TEXAS
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 AAAAA SW U.S.A
EASTERN U.S./CANADA
O: 23SEP2022 04:13:14 41.8N 81.5W MB=2.7 ECAN of Cleveland, OH
O: 23SEP2022 04:15:46 41.7N 81.5W MB=2.3 ECAN of Cleveland, OH
P: 24SEP2022 146953 41.8N 81.4W 2.0-4.1 AAAAA Ohio/Lake Erie
O: 25SEP2022 17:04:23 49.5N 65.7W MB=1.9 ECAN of Saint-Maxime-du-Mont-Louis, Q
P: 22SEP2022 146933 49.0N 66.0W 2.0-3.9 BAAAA E. of Maine
O: 24SEP2022 05:28:24 49.0N 67.9W MB=1.3 ECAN of Baie-Comeau, QC
P: 22SEP2022 146933 49.0N 66.0W 2.0-3.9 AABAA E. of Maine
O: 23SEP2022 17:10:33 47.1N 76.7W MB=2.5 ECAN of Grand-Remous, QC
P: 24SEP2022 146946 47.0N 76.0W 2.0-4.3 AAAAA New York State
O: 23SEP2022 10:15:24 42.9N 78.8W MB=2.1 ECAN of Buffalo, NY
P: 20SEP2022 146681 43.0N 78.0W 2.0-4.1 BAAAA New York State
O: 23SEP2022 04:57:57 45.1N 69.3W MB=1.8 ECAN of Bangor, ME
O: 23SEP2022 04:57:29 45.1N 69.4W MB=1.1 ECAN of Bangor, ME
O: 23SEP2022 04:25:52 45.1N 69.3W MB=1.9 ECAN of Bangor, ME
P: 22SEP2022 146938 44.4N 68.2W 2.0-4.1 AAAAA Maine
O: 23SEP2022 04:20:39 45.7N 74.7W MB=1.4 ECAN of L'Orignal, ON
P: 22SEP2022 146946 45.0N 74.0W 2.0-4.3 AAAAA New York State
HAWAII
O: 25SEP2022 10:09:39 19.3N 155.4W ML=3.0 EMSC ISLAND OF HAWAII, HAWAII
O: 25SEP2022 23:08:04 19.3N 155.5W ML=3.2 EMSC ISLAND OF HAWAII, HAWAII
P: 24SEP2022 146833 19.3N 155.2W 3.0-4.5 AAAAA Hawaii
O: 26SEP2022 01:56:18 19.5N 157.2W ML=3.0 EMSC HAWAIIAN ISLANDS REGION
P: 18SEP2022 146587 20.1N 156.1W 4.0-5.4 CAAAA Hawaii area
M 5.3 IN MAURITIUS AND REUNION, RELATED TO TS NEWTON and MEXICO EARTHQUAKES
EARTHQUAKE SUMMARY FOR SEPTEMBER 24, 2022
The strongest earthquake in the world today was an M 5.3 in the South Indian Ocean near Mauritius and Reunion Islands. It was not reported felt in this remote area. It is at the antipode of Tropical Storm Newton (compare 20N and 20S and 114W and 66E for antipodality). It is also near the antipode of the M 7.6 and 6.8 in Michoacan, Mexico of September 19 and 21, 2022 and was probably promoted by energy from those sources.
"TS NEWTON 2022-09-25 00:00 UT 19.5N 114.4W 040 kts west of Michoacan, Mexico
TS Newton (TD 15E) continued today west of Michoacan, Nexico with winds up to 40 kts. It is expected to track to the west and may enhance aftershocks in the next several days in Michoacan and Colima, Mexico. It may have helped promote the M 6.8 aftershock in Michoacan today." (September 22-24, 2022)
This is the strongest earthquake within about 200 km of this epicenter in the South Indian Ocean since an M 5.4 on January 5, 2013 and prior to that an M 5.4 on April 16, 2006. The strongest earthquakes in this region in the past 30 years have been M 5.4's. Forecast 147011 had expected this event about 300 km to the north of this epicenter was likely around September 25.
O: 24SEP2022 17:00:29 20.1S 66.6E Mw=5.3 EMSC MAURITIUS - REUNION REGION
P: 25SEP2022 147011 17.0S 67.0E 4.0-5.6 ACAAA So. Indian Ocean
An unusual earthquake of M 4.3 occurred today in the area of southern Cuba. It may have lightly felt at Media Luna, Niquero, Cuba. This event was probably promoted by energy associated with Hurricane Ian which was passing near this epicenter at the time of this earthquake. This is an unusual event. The last earthquake of M>=4.3 within about 150 km of this epicenter was an M 4.6 and M 4.3 on May 17-18, 2020. An M 6.8 hit near this epicenter on May 25, 1992. This may be a long-period aftershock of that event. Forecast 146826 had expected enhanced seismicity in this region to the west of this epicenter was likely around September 22.
O: 24SEP2022 20:01:42 19.7N 77.9W mb=4.3 EMSC CUBA REGION
P: 22SEP2022 146826 19.0N 81.0W 3.5-5.5 AACAA Caribbean Sea
A moderate earthquake of M 4.8 occurred off the coast of northern California today. NEIC reported it was felt with maximum intensity IV at Ferndale. It was also felt with intensity II-III in northern California at Petrolia, Rio Dell, Loleta, Fortuna, Hydesville and Scotia among others. The last earthquake within about 150 km of this epicenter off the coast of northern California with equal or greater magnitude was an M 6.2 on December 20, 2021. This may be related to stresses related to the landfall of Hurricane Fiona in Canada today as noted in previous issues of this summary:
"Hurricane Fiona continued north of the Turks and Cacos Islands near Bermuda as a category 4 storm with winds up to 130 kts. It is expected to track to the north making landfall with the North American Continental slope and rise in the next day. This could help promote seismicity along the western edge of the North American Plate and may have helped trigger the M 7.6 mainshock of September 19 and the 6.8 aftershock in Mexico today. The area of northern California and north could see enhanced seismicity at this time. Some enhanced seismicity may also occur in eastern U.S. and Canada as this storm moves north in the Atlantic." (September 22-24, 2022)
Forecast 146950 had expected today's event within about 10 km was likely at the end of September.
O: 24SEP2022 19:27:37 40.3N 124.8W Mw=4.8 EMSC OFFSHORE NORTHERN CALIFORNIA
P: 29SEP2022 146950 40.3N 124.7W 2.5-4.7 BAAAA Off Coast of No. Calif
An earthquake of M 4.8 also occurred in Southern Alaska today. NEIC reported it was felt with intensity II-III in Southern Alaska in Glennallen, Valdez, Copper Center, Palmer, Glirdwood, Chugiak, Eagle River, Wasilla, Anchorage. This is an unusual earthquake for the current period. It is the strongest earthquake within about 200 km of this epicenter since an M 4.8 on January 25, 2021 and prior to that an M 5.3 on November 27, 2017. The last within about 150 km of larger magnitude was an M 5.3 on August 25, 2004. Forecasts 146730 and 146992 had expected activity within about 50 km of this epicenter was likely between September 19 and 28.
O: 24SEP2022 15:18:53 61.5N 145.6W mb=4.8 EMSC SOUTHERN ALASKA
P: 19SEP2022 146730 61.4N 146.5W 3.2-5.2 BAAAA Central Alaska
P: 28SEP2022 146992 63.2N 145.5W 3.2-5.3 BBAAA Central Alaska
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 24SEP2022 10:58:18 53.8N 88.2E mb=4.1 EMSC SOUTHWESTERN SIBERIA, RUSSIA
P: 21SEP2022 146983 50.0N 88.0E 3.0-4.4 BCAAA So. Siberia
O: 24SEP2022 07:32:05 23.3N 121.2E ML=4.2 EMSC TAIWAN
O: 24SEP2022 07:32:05 23.3N 121.2E ML=4.2 TAI Hualien, Taiwan
P: 22SEP2022 146870 24.0N 121.0E 4.0-5.4 AAAAA Taiwan
P: 26SEP2022 146869 23.0N 121.0E 4.0-5.4 AAAAA Taiwan
CWB reported this earthquake was felt with intensity III in Hualien and Taitung, II in Nantou and I in Yunlin, and Chiayi Counties, Taiwan.
O: 25SEP2022 06:10:18 31.6N 57.3E ML=4.3 EMSC EASTERN IRAN
P: 30SEP2022 146867 28.0N 56.0E 3.5-4.9 BCAAA So. Iran/Persian Gulf
O: 24SEP2022 14:00:16 33.3N 81.8E ML=4.0 EMSC WESTERN XIZANG
P: 25SEP2022 146928 30.0N 82.0E 3.8-5.6 ACAAA Xizang
No significant (M>=5) or unusual earthquakes were reported in Asia today.
INDONESIA AND PHILIPPINES
O: 24SEP2022 13:33:45 2.5N 128.4E ML=4.0 EMSC HALMAHERA, INDONESIA
P: 24SEP2022 146798 2.0N 129.0E 4.0-5.4 AAAAA Halmahera
O: 24SEP2022 21:11:41 4.1N 125.9E mb=4.5 EMSC KEPULAUAN SANGIHE, INDONESIA
P: 23SEP2022 146800 4.0N 126.0E 4.0-5.4 AAAAA Mindanao, Philippines
O: 24SEP2022 17:19:53 7.5S 121.8E ML=4.2 EMSC FLORES SEA
P: 30SEP2022 146806 8.0S 121.0E 4.0-5.5 CAAAA Flores Island area
O: 24SEP2022 20:32:30 9.4S 114.5E mb=4.9 EMSC SOUTH OF BALI, INDONESIA
P: 23SEP2022 146816 9.0S 113.0E 4.0-5.6 AABAA So. of Bali
NEIC reported this earthquake of M 4.9 in Bali, Indonesia was felt with intensity II-III in the area(s) of Bali, Indonesia in Denpassar, Tabana, Karangasem and in Kuta. It was also felt in Gambiran, Java.
O: 24SEP2022 10:15:18 18.7N 145.7E mb=4.4 EMSC PAGAN REG., N. MARIANA ISLANDS
P: 25SEP2022 146845 17.0N 147.0E 4.0-5.5 ABAAA No. Marianas
P: 30SEP2022 146845 19.0N 146.0E 4.0-5.4 CAAAA No. Marianas
CENTRAL AND SOUTH AMERICA
O: 24SEP2022 20:01:42 19.7N 77.9W mb=4.3 EMSC CUBA REGION
P: 22SEP2022 146826 19.0N 81.0W 3.5-5.5 AACAA Caribbean Sea
O: 24SEP2022 08:39:23 3.0S 79.9W ML=4.0 EMSC NEAR COAST OF ECUADOR
P: 29SEP2022 146805 4.0S 80.0W 4.0-5.5 BAAAA Ecuador
O: 24SEP2022 14:39:09 12.0N 86.8W mb=4.2 EMSC NICARAGUA
O: 25SEP2022 04:19:21 12.3N 87.4W mb=4.5 EMSC NEAR COAST OF NICARAGUA
P: 22SEP2022 146843 12.0N 86.0W 3.5-5.2 AAAAA Nicaragua
NEIC reported this earthquake of M 4.2 in Nicaragua was felt with intensity II-III in the area(s) of Nicaragua in Ciudad Sandino, Managua.
NEIC reported this earthquake of M 4.6 in El Salvador was felt with intensity II-III in the area(s) of El Salvador in San Salvador.
O: 25SEP2022 01:29:15 14.9N 93.6W mb=4.6 EMSC OFFSHORE CHIAPAS, MEXICO
P: 24SEP2022 146827 15.0N 93.0W 3.5-5.1 AAAAA Chiapas, Mexico
O: 24SEP2022 08:37:53 15.2N 94.6W ML=4.3 EMSC OFF COAST OF OAXACA, MEXICO
O: 24SEP2022 22:19:37 15.5N 96.4W ML=4.0 EMSC OFFSHORE OAXACA, MEXICO
P: 29SEP2022 146848 16.0N 96.0W 3.5-5.3 BAAAA Oaxaca, Mexico
O: 24SEP2022 15:27:22 17.2N 98.9W mb=4.6 EMSC GUERRERO, MEXICO
P: 24SEP2022 146847 16.0N 98.0W 3.5-5.2 ABAAA Oaxaca, Mexico
NEIC reported this earthquake of M 4.6 in Guerrero, Mexico was felt with intensity II-III in the area(s) of Guerero, Mexico in Tlalnepantla.
O: 25SEP2022 03:36:13 17.3N 94.8W ML=4.0 EMSC VERACRUZ, MEXICO
O: 24SEP2022 11:06:58 17.5N 95.0W ML=4.1 EMSC VERACRUZ, MEXICO
P: 25SEP2022 146849 17.0N 96.0W 3.5-5.4 AAAAA Oaxaca, Mexico
O: 24SEP2022 18:46:03 17.5N 101.1W ML=4.0 EMSC GUERRERO, MEXICO
O: 25SEP2022 05:03:39 17.7N 101.6W ML=4.0 EMSC GUERRERO, MEXICO
P: 21SEP2022 146840 17.0N 101.0W 3.5-5.4 BAAAA Michoacan, Mexico
P: 24SEP2022 146840 19.0N 101.0W 3.5-5.8 ABAAA Michoacan, Mexico
O: 24SEP2022 10:05:47 18.1N 103.3W ML=4.5 EMSC OFFSHORE MICHOACAN, MEXICO
O: 24SEP2022 11:00:42 18.1N 103.5W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 25SEP2022 04:45:12 18.1N 103.2W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
P: 24SEP2022 146841 18.0N 103.0W 3.5-6.1 AAAAA Michoacan, Mexico
O: 24SEP2022 20:01:42 19.7N 77.9W mb=4.3 EMSC CUBA REGION
P: 22SEP2022 146826 19.0N 81.0W 3.5-5.5 AACAA Caribbean Sea
O: 24SEP2022 10:21:20 24.6S 69.4W ML=4.0 EMSC ANTOFAGASTA, CHILE
P: 26SEP2022 147024 23.0S 69.0W 4.0-5.6 ABAAA Coast No. Chile
O: 24SEP2022 08:02:28 33.7S 72.6W mb=4.6 EMSC OFFSHORE VALPARAISO, CHILE
P: 29SEP2022 147033 34.0S 73.0W 4.0-5.8 BAAAA Central Chile
NEIC reported this earthquake of M 4.6 in Chile was felt with intensity II-III in the area(s) of Chile in Santiago.
AFRICA AND EUROPE
O: 25SEP2022 06:18:00 46.0N 6.9E ML=3.9 EMSC FRANCE
P: 18SEP2022 146660 46.0N 8.0E 3.0-5.3 CAAAA Austria
NEIC reported this earthquake of M 3.3-3.9 in France was felt with intensity II-III in the area(s) of Francein Chamonix-Mont=Blanc and Vallorcine, Rhone-Alpes.
No significant (M>=5) or unusual earthquakes were reported in Europe today.
SOUTHWEST PACIFIC
O: 24SEP2022 12:54:30 10.7S 162.2E mb=4.5 EMSC SOLOMON ISLANDS
P: 23SEP2022 147019 11.0S 161.0E 4.0-5.5 AAAAA Vanuatu Islands
P: 26SEP2022 147009 10.0S 161.0E 4.0-5.4 AAAAA No. of Santa Cruz Islands
O: 24SEP2022 19:38:52 14.9S 167.0E Mw=5.0 EMSC VANUATU
P: 24SEP2022 147020 15.0S 168.0E 4.0-5.4 AAAAA Vanuatu Islands
P: 26SEP2022 147020 14.0S 167.0E 4.0-5.4 AAAAA Vanuatu Islands
NEIC reported this earthquake of M 5.0 in Vanuatu was felt with intensity II-III in the area(s) of Vanuatu at Luganville, Sanma.
O: 25SEP2022 05:01:34 20.4S 177.3W mb=4.1 EMSC FIJI REGION
P: 28SEP2022 147030 20.0S 176.0W 4.0-5.5 BAAAA Tonga Islands
OCEAN RIDGES
O: 24SEP2022 21:59:57 1.3S 14.8W mb=4.7 EMSC NORTH OF ASCENSION ISLAND
P: 24SEP2022 146803 1.0S 16.0W 4.0-5.8 AAAAA Central Mid-Atlantic
O: 24SEP2022 17:00:29 20.1S 66.6E Mw=5.3 EMSC MAURITIUS - REUNION REGION
P: 25SEP2022 147011 17.0S 67.0E 4.0-5.6 ACAAA So. Indian Ocean
O: 24SEP2022 21:45:21 59.0S 25.7W mb=5.0 EMSC SOUTH SANDWICH ISLANDS REGION
P: 24SEP2022 147046 56.0S 26.0W 4.0-5.6 ACAAA So. Sandwich Islands
P: 29SEP2022 147046 57.0S 25.0W 4.0-6.1 BBAAA So. Sandwich Islands
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: 24SEP2022 10:11:30 36.8N 141.2E ML=4.0 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 26SEP2022 146903 36.0N 141.0E 4.0-5.6 AAAAA Off East Coast Honshu
P: 26SEP2022 146903 37.0N 142.0E 4.0-5.4 AAAAA Off East Coast Honshu
O: 24SEP2022 21:23:30 37.5N 137.3E ML=4.0 EMSC NEAR WEST COAST OF HONSHU, JAP
P: 25SEP2022 146898 38.0N 135.0E 3.5-4.9 AABAA No. Honshu, Japan
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 25SEP2022 05:53:31 33.5N 116.5W Ml=2.0 EMSC SOUTHERN CALIFORNIA
P: 23SEP2022 146908 33.1N 116.2W 2.5-4.4 AAAAA So. California
O: 24SEP2022 16:40:11 34.5N 119.3W Ml=2.1 EMSC SOUTHERN CALIFORNIA
P: 22SEP2022 146913 34.3N 118.5W 2.5-4.6 AAAAA So. California
O: 25SEP2022 04:11:40 35.5N 118.4W Ml=2.2 EMSC CENTRAL CALIFORNIA
P: 24SEP2022 146916 35.6N 118.4W 2.5-4.4 AAAAA So. California
O: 25SEP2022 00:55:37 36.6N 121.2W Md=2.2 EMSC CENTRAL CALIFORNIA
O: 24SEP2022 17:59:03 36.2N 121.0W Md=2.2 EMSC CENTRAL CALIFORNIA
P: 24SEP2022 146880 36.2N 120.8W 2.5-4.6 AAAAA Central California
O: 24SEP2022 19:20:07 38.5N 119.5W Md=2.2 EMSC CENTRAL CALIFORNIA
P: 28SEP2022 146878 38.8N 119.6W 2.5-4.8 BAAAA California/Nevada area
O: 24SEP2022 19:27:37 40.3N 124.8W Mw=4.8 EMSC OFFSHORE NORTHERN CALIFORNIA
P: 29SEP2022 146950 40.3N 124.7W 2.5-4.7 BAAAA Off Coast of No. Calif
ALASKA
O: 24SEP2022 15:18:53 61.5N 145.6W mb=4.8 EMSC SOUTHERN ALASKA
P: 19SEP2022 146730 61.4N 146.5W 3.2-5.2 BAAAA Central Alaska
P: 28SEP2022 146992 63.2N 145.5W 3.2-5.3 BBAAA Central Alaska
O: 24SEP2022 20:15:01 63.2N 150.7W ML=3.3 EMSC CENTRAL ALASKA
P: 24SEP2022 146991 64.3N 151.0W 3.2-5.0 ABAAA Central Alaska
PACIFIC NORTHWESTERN U.S./WESTERN CANADA
O: 24SEP2022 11:58:57 45.4N 123.9W Ml=2.5 EMSC OREGON
P: 22SEP2022 146956 45.3N 121.7W 2.0-4.1 AABAA Oregon state, U.S.
NEIC reported this earthquake of M 2.5 in Oregon was felt with intensity II-III in the area(s) of Oregon in Tillamook and Rockaway Beach.
ROCKY MOUNTAINS REGION
O: 24SEP2022 23:44:40 31.6N 104.6W ML=2.1 EMSC WESTERN TEXAS
O: 24SEP2022 18:51:13 31.7N 104.5W ML=2.4 EMSC WESTERN TEXAS
P: 24SEP2022 146906 32.5N 104.6W 2.0-3.9 AAAAA SW U.S.A
O: 24SEP2022 18:32:16 38.4N 112.8W Ml=2.2 EMSC UTAH
P: 29SEP2022 146926 39.8N 112.7W 2.0-4.0 ABAAA Utah area
EASTERN U.S./CANADA
No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.
HAWAII
No earthquakes of M>=3 were located in Hawaii.
STRONG EARTHQUAKES FELT IN CHILE AND SUMATRA
EARTHQUAKE SUMMARY FOR SEPTEMBER 23, 2022
Two strong earthquakes were felt in the world today. These occurred in Sumatra, Indonesia (M 6.1-6.4) and in south-central Chile in the Los Lagos area. The Chilean event of M 6.1 was felt in the Los Lagos area of Central Chile. NEIC reported it was felt with maximum intensity in Los Lagos at Castro, Puerto Varas and II-III in Ancud, Puerto Montt, Osorno, Valdivia, Baritoche Rio, Temuco, Arucania, Chile. GUC reported this earthquake was felt with intensity V in Los Lagos at Ancud, Calbuco, Castro, Chaiten, Curaco de Velez, Frutillar, Maullin, Puerto Montt, Queilen, Quernchi, Quinchao, San Juan de al Costa, Bahia Mansa and IV in Quellon, Purranque, Puerto Varas, Hualaihue, Dalcahur, Chonchi, in Lo Rios with V in Valdivia III in Rio Bueno and in Aysen at Raul Marin Balmaceda, Chile. An earthquake of M 6.7 occurred about 250 km to the north of today's epicenter in Los Lagos on December 27, 2020 but the last event within about 200 km of today's epicenter of equal or larger magnitude than M 6.1 was an 6.4 on August 22, 1999 about about 150 km northeast of today's epicenter. Forecast 147034 had expected today's event was likely in this area around September 23. This epicenter is located at the third node (120 degrees) from the earthquake of M 7.6 of September 10, 2022 and was probably promoted by energy from that source.
O: 23SEP2022 22:53:26 41.3S 75.6W Mw=6.1 EMSC OFF COAST OF LOS LAGOS, CHILE
O: 23SEP2022 22:53 41.4S 75.5W mb=6.0 GUC Los Lagos at Ancud, Calbuco, C
P: 23SEP2022 147034 39.0S 73.0W 4.0-5.5 ACBAA Central Chile
An earthquake of M 6.2 was also widely felt in the area of Northern Sumatra and Malaysia today. NEIC reported intensity II-III in Banda Aceh, Indonesia, in Malaysia at Georgetown Pulau, Butterworth, Perai, and in Thailand at Phuket and Kathu.
BMG reported this earthquake with M 6.4 at 3.8N 96E. They reported maximum intensity IV in Aceh Selatan and Nagan Raya, Meulaboh, III in Aceh Besar, Banda Aceh, Takengon, Bener Meriah, Simeulue and II in Pidie, Idi, Bireun, Aceh Tamiang, and Lansa. A foreshock about 100 km north of the M 6.4 occurred about half an hour prior to the mainshock. BMG reported it was felt with intensity IV in Takengon, Bener Meriah, and III in Idi, Reyeuk-Aceh, Timur and Aceh Barat Daya. While an M 5.9 occurred about 100 km west of this epicenter on March 5, 2022, the last earthquake within about 250 km of this epicenter with M>=6.2 per NEIC data was an 6.2 about 200 km southeast of today's epicenter on January 7, 2020 and an M 6.5 about 200 km north of this on December 6, 2016. The last definitely within the 200 km radius zone was an M 6.4 on July 25, 2012. This followed a major event of M 8.6 about 300 km southwest of today's epicenter on April 11, 2012. Forecast 146801 had expected seismic activation in this region was likely to the southwest of today's epicenter around September 23. This epicenter is at 51.4 degrees (node 7) from the M 7.6 in Papua New Guinea of September 10, 2022 and near 144 degrees from the M 7.6 in Mexico of September 19, 2022 and was probably promoted by energy from those sources.
O: 23SEP2022 20:52:58 4.0N 96.1E Mw=6.2 EMSC NORTHERN SUMATRA, INDONESIA
P: 23SEP2022 146801 3.0N 94.0E 4.0-5.4 AABAA Nicobar Islands
Moderate aftershocks also continued in Michoacan, Mexico following mainshocks of M 7.6 on September 19 and M 6.8 on September 21. Among these was an M 5.2 felt with intensity IV in Armeria, Colima, Mexico and II-III in Colima, Manzanillo, in Jalisco at Guzman, Ajijio, Ocotlan and in Michoacan at Lazaro Cardenas and Zamora among others. This event occurred with minutes of local solar noon and was probably promoted by Solar Flare Effects and/or tidal stresses which maximize near this hour. Seiche was also reported by the press to have occurred in the Southwestern U.S. in a cave following the M 7.6 in Mexico of September 19 but not after the M 6.8 aftershock of September 21. It was referred to as a "desert tsunami" an unusual terminology for a normal event. Following the M 7.6 in Lander, California in June, 1992, for example, seiche was widely observed in swimming pools in Colorado more than 2000 from the epicenter. Surface waves are largely responsible for the displacement of water following major earthquakes which result in sloshing of the water far from the earthquake epicenter.
Forecasts 146830 and 146841 had expected today's activity in Jalisco and Michoacan, Mexico was likely around September 23-24.
O: 23SEP2022 11:42:46 18.2N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 23SEP2022 18:26:00 18.5N 103.7W Mw=5.2 EMSC OFFSHORE MICHOACAN, MEXICO
O: 23SEP2022 07:57:19 18.2N 103.1W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
P: 23SEP2022 146830 18.0N 104.0W 3.5-6.4 AAAAA Coast of Jalisco, Mexico
P: 24SEP2022 146841 18.0N 103.0W 3.5-6.1 AAAAA Michoacan, Mexico
A moderately strong solar flare of M1.7 (#4130) occurred today maximizing around 18:10-18:24 UT according to data from SWPC. This is the strongest solar flare since The aftershock in Michoacan occurred near the maximum of this flare and may have been promoted by SFE from it. An M 3.5 also occurred off the coast of Oregon within a minute of the Michoacan event and may also have been promoted by SFE. Other moderate earthquakes closely associated with flare 4130 occurred in Western Honshu (M 4.0); Fiji (M 5.3); northern Peru (M 4.6) and Argentina (M 4.2). An M 6.2 followed the flare two hours later in Northern Sumatra at the same time as an M 5.4 in the Banda Sea. These may also have been promoted by SFE associated with flare 4130. This is the strongest solar flare in the past week - since an M1.9 on September 17, 2022 (#2380). It occurred with SWPC parameters:
SOLAR FLARE ACTIVITY
Flare # START MAX END CLASS DATE Flux (Jm-2)
#-------------------------------------------------------------------------------
4130 1748 1810 1841 M1.7 (September 23, 2022) 3.8E-02
The strongest earthquake in the U.S. or Canada today was an M 3.4-3.8 in Hawaii. NEIC reported this earthquake of M 3.5-3.8 in Hawaii was felt with intensity II-III in the area(s) of Hawaii in Hawaii National Park, Volcano, Mountain View, Hilo, Keaau and Papaikou. This continues enhanced seismicity in the area following the earthquakes in Mexico of September 19 and 21. Forecast 146833 had expected this event within about 25 km was likely around September 24.
O: 24SEP2022 06:43:50 19.3N 155.4W ML=3.8 EMSC ISLAND OF HAWAII, HAWAII
P: 24SEP2022 146833 19.3N 155.2W 3.0-4.5 AAAAA Hawaii
An unusual earthquake of M 2.6 also occurred today in the region of Newfoundland, Canada. This occurred as Hurricane Fiona passed near this epicenter as noted in this and previous issues of this summary as:
"Hurricane Fiona continued over Nova Scotia today with winds up to 100 kts. It is expected to track to the north making landfall with Nova Scotia today. This appears to be one of the strongest storms to hit Nova Scotia in recent years. This could help promote seismicity along the western edge of the North American Plate. The area of northern California and north could see enhanced seismicity at this time. Some enhanced seismicity may also occur in eastern U.S. and Canada as this storm moves north in the Atlantic." (September 23-24, 2022)
It is likely that this earthquake was promoted by energy associated with the passage of Hurricane Fiona.
O: 22SEP2022 21:12:59 48.4N 57.5W MB=2.6 ECAN of Corner Brook, NL
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 23SEP2022 15:59:22 24.8N 121.9E ML=4.0 TAI Hualien, Taiwan
P: 22SEP2022 146870 24.0N 121.0E 4.0-5.4 AAAAA Taiwan
CWB reported this earthquake was felt with intensity III in Yilan and I in Hualien, and Taipei Counties, Taiwan.
O: 23SEP2022 14:32:28 33.7N 82.0E mb=4.3 EMSC WESTERN XIZANG
P: 25SEP2022 146928 30.0N 82.0E 3.8-5.6 ACAAA Xizang
O: 23SEP2022 23:33:09 36.5N 71.2E mb=4.1 EMSC HINDU KUSH REGION, AFGHANISTAN
P: 22SEP2022 146889 37.0N 72.0E 3.8-5.2 AAAAA Hindu Kush/Pakistan
O: 24SEP2022 02:13:11 50.0N 90.0E mb=4.3 EMSC SOUTHWESTERN SIBERIA, RUSSIA
P: 21SEP2022 146983 50.0N 88.0E 3.0-4.4 BABAA So. Siberia
No significant (M>=5) or unusual earthquakes were reported in Asia today.
INDONESIA AND PHILIPPINES
O: 23SEP2022 16:12:52 0.1S 126.2E ML=4.1 EMSC MOLUCCA SEA
P: 24SEP2022 146804 1.0S 127.0E 4.0-5.4 AAAAA Ceram area
O: 23SEP2022 09:50:17 0.2N 123.6E mb=4.9 EMSC MINAHASA, SULAWESI, INDONESIA
P: 27SEP2022 146800 0.0N 124.0E 4.0-5.4 BAAAA Mindanao, Philippines
O: 23SEP2022 20:52:58 4.0N 96.1E Mw=6.2 EMSC NORTHERN SUMATRA, INDONESIA
P: 23SEP2022 146801 3.0N 94.0E 4.0-5.4 AABAA Nicobar Islands
O: 23SEP2022 21:11:51 5.2S 125.7E ML=4.6 EMSC BANDA SEA
O: 23SEP2022 21:20:08 5.2S 125.7E mb=4.6 EMSC BANDA SEA
O: 23SEP2022 21:39:25 5.2S 125.6E ML=4.4 EMSC BANDA SEA
O: 23SEP2022 21:52:11 5.3S 125.7E ML=4.3 EMSC BANDA SEA
O: 23SEP2022 20:51:25 5.2S 125.6E Mw=5.4 EMSC BANDA SEA
P: 27SEP2022 146804 3.0S 126.0E 4.0-5.6 BCAAA Ceram area
O: 23SEP2022 12:34:27 6.0S 148.7E Mw=5.4 EMSC NEW BRITAIN REGION, P.N.G.
P: 22SEP2022 146811 6.0S 148.0E 4.0-5.5 AAAAA New Ireland
O: 23SEP2022 15:22:45 6.1S 153.7E mb=4.7 EMSC NEW BRITAIN REGION, P.N.G.
P: 25SEP2022 146810 5.0S 153.0E 4.0-5.4 ABAAA New Britain
O: 23SEP2022 13:36:50 7.7S 127.7E ML=4.2 EMSC KEPULAUAN BARAT DAYA, INDONESIA
O: 23SEP2022 07:19:15 7.7S 127.6E mb=4.3 EMSC KEPULAUAN BARAT DAYA, INDONESI
P: 17SEP2022 146537 7.0S 128.0E 4.0-5.5 CAAAA Banda Sea
CENTRAL AND SOUTH AMERICA
O: 23SEP2022 11:42:46 18.2N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 23SEP2022 18:26:00 18.5N 103.7W Mw=5.2 EMSC OFFSHORE MICHOACAN, MEXICO
O: 23SEP2022 07:57:19 18.2N 103.1W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
P: 23SEP2022 146830 18.0N 104.0W 3.5-6.4 AAAAA Coast of Jalisco, Mexico
P: 24SEP2022 146841 18.0N 103.0W 3.5-6.1 AAAAA Michoacan, Mexico
O: 23SEP2022 23:44:44 1.8S 80.6W mb=4.3 EMSC NEAR COAST OF ECUADOR
P: 22SEP2022 146805 1.0S 81.0W 4.0-5.8 AAAAA Ecuador
O: 23SEP2022 17:58:54 8.6S 80.3W mb=4.6 EMSC OFF COAST OF NORTHERN PERU
P: 28SEP2022 146813 9.0S 80.0W 4.0-5.6 BAAAA No. Peru
O: 24SEP2022 06:58:29 13.1N 88.8W mb=4.6 EMSC OFFSHORE EL SALVADOR
P: 25SEP2022 146844 14.0N 88.0W 3.5-5.3 AAAAA Nicaragua
O: 24SEP2022 00:14:38 13.3N 89.5W mb=4.1 EMSC OFFSHORE EL SALVADOR
P: 27SEP2022 146832 14.0N 90.0W 3.5-5.5 BAAAA Guatemala
NEIC reported this earthquake of M 4.1 in El Salvador was felt with intensity II-III in the area(s) of El Salvador in San Salvador.
O: 23SEP2022 07:06:50 15.4N 96.5W ML=4.1 EMSC OFFSHORE OAXACA, MEXICO
P: 25SEP2022 146849 17.0N 96.0W 3.5-5.4 ABAAA Oaxaca, Mexico
O: 23SEP2022 16:42:06 18.6N 66.4W Md=3.0 EMSC PUERTO RICO REGION
P: 21SEP2022 146851 18.0N 66.0W 3.4-5.1 AAAAA Puerto Rico
O: 23SEP2022 21:00:45 18.6N 73.7W ML=3.5 EMSC HAITI REGION
P: 25SEP2022 146852 19.0N 74.0W 3.4-5.1 AAAAA Puerto Rico
O: 24SEP2022 05:09:00 19.0N 64.4W ML=3.0 EMSC VIRGIN ISLANDS REGION
P: 22SEP2022 146855 20.0N 65.0W 3.0-4.4 AAAAA Bahamas/No. Caribbean
P: 24SEP2022 146835 18.0N 64.0W 3.0-5.0 AAAAA Leeward Islands
O: 23SEP2022 17:48:17 22.2S 66.1W ML=4.2 EMSC JUJUY, ARGENTINA
O: 24SEP2022 05:57:44 24.0S 66.9W mb=4.2 EMSC JUJUY, ARGENTINA
O: 23SEP2022 07:49:15 23.5S 67.5W mb=4.5 EMSC ANTOFAGASTA, CHILE
P: 22SEP2022 147021 23.0S 66.0W 4.0-5.6 AABAA Argentina
O: 23SEP2022 20:18:23 25.0N 105.2W ML=4.1 EMSC DURANGO, MEXICO
P: 30SEP2022 146858 24.0N 109.0W 3.5-5.0 CACAA Gulf of California
O: 23SEP2022 20:17:03 29.0S 71.6W mb=4.9 EMSC OFFSHORE ATACAMA, CHILE
P: 23SEP2022 147035 30.0S 70.0W 4.0-5.7 AAAAA Coast Central Chile
O: 23SEP2022 22:53:26 41.3S 75.6W Mw=6.1 EMSC OFF COAST OF LOS LAGOS, CHILE
O: 23SEP2022 22:53 41.4S 75.5W mb=6.0 GUC Los Lagos at Ancud, Calbuco, C
P: 23SEP2022 147034 39.0S 73.0W 4.0-5.5 ACBAA Central Chile
AFRICA AND EUROPE
O: 23SEP2022 21:02:51 23.6S 28.2E ML=3.3 EMSC SOUTH AFRICA
P: 14SEP2022 146763 27.0S 27.0E 3.0-4.4 CCAAA Rep. South Africa
O: 23SEP2022 16:22:54 36.8N 7.3E mb=3.9 EMSC NORTHERN ALGERIA
P: 28SEP2022 146927 37.0N 4.0E 3.0-4.7 BACAA Western Mediterranean
O: 24SEP2022 04:47:31 77.5N 7.4E mb=4.2 EMSC SVALBARD REGION
P: 22SEP2022 147002 79.0N 7.0E 4.0-5.8 ABAAA Arctic Ocean Region
No significant (M>=5) or unusual earthquakes were reported in Europe today.
SOUTHWEST PACIFIC
O: 23SEP2022 16:06:05 13.2S 167.2E mb=4.9 EMSC VANUATU
P: 26SEP2022 147020 14.0S 167.0E 4.0-5.4 BAAAA Vanuatu Islands
O: 23SEP2022 19:03:01 21.5S 179.3W Mw=5.3 EMSC FIJI REGION
P: 25SEP2022 147030 21.0S 179.0W 4.0-5.4 AAAAA Tonga Islands
OCEAN RIDGES
No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.
ZEALANDIA AND AUSTRALIA REGION
O: 23SEP2022 19:05:12 34.0S 178.1E ML=4.3 EMSC SOUTH OF KERMADEC ISLANDS
P: 23SEP2022 147037 37.0S 178.0E 3.0-4.7 ACAAA North Island, N.Z.
JAPAN AND KURIL ISLANDS
O: 24SEP2022 03:36:09 35.4N 135.4E mb=4.1 EMSC WESTERN HONSHU, JAPAN
O: 23SEP2022 18:34:30 34.8N 135.3E ML=4.0 EMSC NEAR S. COAST OF WESTERN HONSH
P: 24SEP2022 146885 34.0N 137.0E 3.5-5.0 ABBAA Central/So. Honshu Japan
O: 24SEP2022 01:00:18 37.9N 141.8E mb=4.6 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 26SEP2022 146903 37.0N 142.0E 4.0-5.4 AAAAA Off East Coast Honshu
O: 24SEP2022 06:16:52 42.6N 143.2E mb=4.4 EMSC HOKKAIDO, JAPAN REGION
P: 20SEP2022 146668 44.0N 142.0E 3.5-5.4 BBAAA Hokkaido, Japan
O: 23SEP2022 07:08:57 49.7N 156.0E mb=4.6 EMSC KURIL ISLANDS
P: 20SEP2022 146678 49.0N 156.0E 3.5-5.6 BAAAA NE Pacific
P: 24SEP2022 146943 49.0N 155.0E 3.5-5.8 AAAAA NE Pacific
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 23SEP2022 21:04:52 31.4N 115.5W ML=3.4 EMSC BAJA CALIFORNIA, MEXICO
O: 23SEP2022 20:35:43 31.4N 115.7W ML=3.4 EMSC BAJA CALIFORNIA, MEXICO
P: 26SEP2022 146908 32.1N 116.4W 2.5-4.4 BAAAA So. California
O: 23SEP2022 10:41:19 33.0N 116.3W Ml=2.1 EMSC SOUTHERN CALIFORNIA
P: 23SEP2022 146908 33.1N 116.2W 2.5-4.4 AAAAA So. California
O: 23SEP2022 13:37:02 35.5N 118.3W Ml=2.1 EMSC CENTRAL CALIFORNIA
P: 24SEP2022 146916 35.6N 118.4W 2.5-4.4 AAAAA So. California
O: 24SEP2022 04:47:05 38.2N 117.8W ml=2.2 EMSC NEVADA
P: 26SEP2022 146876 37.8N 118.4W 2.5-4.4 AAAAA California/Nevada area
O: 23SEP2022 13:04:07 39.3N 123.0W Md=2.1 EMSC NORTHERN CALIFORNIA
P: 23SEP2022 146884 39.2N 123.1W 2.5-4.7 AAAAA Central California
ALASKA
O: 23SEP2022 12:54:20 52.0N 178.5E ML=3.0 EMSC RAT ISLANDS, ALEUTIAN ISLANDS
P: 24SEP2022 146981 51.0N 178.0E 4.0-5.6 AAAAA Rat Islands
O: 23SEP2022 10:20:58 57.5N 154.2W ML=3.6 EMSC KODIAK ISLAND REGION, ALASKA
P: 24SEP2022 146989 60.3N 153.0W 3.2-5.1 ACAAA Central Alaska
O: 24SEP2022 06:13:50 63.2N 150.8W ML=3.2 EMSC CENTRAL ALASKA
O: 23SEP2022 07:07:58 62.9N 149.7W ML=3.2 EMSC CENTRAL ALASKA
P: 24SEP2022 146991 64.3N 151.0W 3.2-5.0 ABAAA Central Alaska
PACIFIC NORTHWESTERN U.S./WESTERN CANADA
O: 23SEP2022 18:26:46 43.7N 128.6W ML=3.4 EMSC OFF COAST OF OREGON
P: 24SEP2022 146952 44.1N 128.8W 3.0-4.5 AAAAA Off Coast of Oregon
ROCKY MOUNTAINS REGION
O: 23SEP2022 10:15:02 31.7N 104.5W ML=2.0 EMSC WESTERN TEXAS
O: 23SEP2022 15:48:28 31.7N 104.4W ML=2.5 EMSC WESTERN TEXAS
O: 23SEP2022 21:05:42 31.6N 104.3W ML=2.6 EMSC WESTERN TEXAS
P: 24SEP2022 146906 32.5N 104.6W 2.0-3.9 AAAAA SW U.S.A
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 BAAAA SW U.S.A
O: 23SEP2022 10:34:20 44.3N 115.1W ML=2.4 EMSC SOUTHERN IDAHO
P: 24SEP2022 146940 44.4N 115.2W 2.0-4.4 AAAAA Montana/Idaho
EASTERN U.S./CANADA
O: 23SEP2022 08:46:49 36.5N 98.5W ML=2.0 EMSC OKLAHOMA
P: 25SEP2022 146921 36.0N 97.0W 2.0-4.1 AAAAA Southern Plains
P: 28SEP2022 146922 37.0N 98.0W 2.0-4.1 BAAAA Southern Plains
O: 22SEP2022 21:12:59 48.4N 57.5W MB=2.6 ECAN of Corner Brook, NL
O: 22SEP2022 16:10:40 50.2N 94.6W MB=1.9 ECAN of Wabaseemoong, ON
HAWAII
O: 23SEP2022 07:17:06 19.1N 156.4W ML=3.1 EMSC HAWAII REGION, HAWAII
P: 18SEP2022 146587 20.1N 156.1W 4.0-5.4 BAAAA Hawaii area
O: 24SEP2022 06:43:50 19.3N 155.4W ML=3.8 EMSC ISLAND OF HAWAII, HAWAII
P: 24SEP2022 146833 19.3N 155.2W 3.0-4.5 AAAAA Hawaii
MODERATE QUAKES FELT IN ITALY; COOK STRAIT, NEW ZEALAND
EARTHQUAKE SUMMARY FOR SEPTEMBER 22, 2022
A moderate earthquake of M 4.6 shook areas of northern Italy today. NEIC reported maximum intensity IV in Toano Emilia-Romagna and II-III in Toscana, Italy at Coreglia Antelminelli, Camporgiano, Pistoia, Lucca, Pisa. A foreshock of M 4.4 in Ligurien, Italy was felt with intensity V in Bogliasco, Genoa, IV in Recco, and II-III in Camogli, Santa Margherita, Portofino, Zoagli, La Spazia, Milan. These are the strongest earthquakes in northern Italy within about 100 km of these epicenters since an M 4.7 on February 9, 2022 and prior to that an M 4.6 on December 29, 2020. The last earthquake of significantly larger magnitude in this area was an M 4.8 on December 9, 2019 and an M 4.9 on November 19, 2017. Forecasts 146661, 146660 and 146670 had expected this activity in northern Italy was likely in mid- to late September.
O: 22SEP2022 10:24:50 42.8N 13.6E ML=4.1 EMSC CENTRAL ITALY
P: 14SEP2022 146670 43.0N 13.0E 3.0-5.1 CAAAA Italy
O: 22SEP2022 15:47:56 44.2N 10.5E ML=4.0 EMSC NORTHERN ITALY
O: 22SEP2022 15:47:56 44.2N 10.5E ML=4.6 ANSS NORTHERN ITALY
P: 14SEP2022 146670 44.0N 7.0E 3.0-5.0 AAAAA Italy
P: 16SEP2022 146661 46.0N 11.0E 3.0-5.1 CBAAA Austria
O: 22SEP2022 13:40:00 44.4N 9.1E ML=4.1 EMSC NORTHERN ITALY
O: 22SEP2022 13:40:00 44.4N 9.1E ML=4.4 ANSS NORTHERN ITALY
P: 18SEP2022 146660 46.0N 8.0E 3.0-5.3 BBAAA Austria
P: 14SEP2022 146670 44.0N 7.0E 3.0-5.0 CABAA Italy
A moderate earthquake of M 5.2-5.8 shook areas surrounding the Cook Strait, New Zealand today. NEIC reported this event with This moderately large earthquake was also reported in the French Pass region of Northern South Island, New Zealand. GEONET gives this NEIC reported this event with maximum intensity V in New Zealand in Wellington at Porirua, Blenheim, Marlborough; IV in Richmond, Tasman, Nelson, Lower Hutt, Wellington and III in Picton, Marlborough, Kapiti, and Otaki among others. GEONET reported this earthquake was felt with moderate to strong intensity in the area southeast of Wellington, New Zealand and in southern North Island and northern South Island. 44548 reports of felt events were made of which 11817 reported weak and 23641 light intensity with 8145 report of moderate shaking and 866 with strong and 35 severe and 44 with extreme intensity came from the area. Seismicity in this area had been anticipated in this summary to be enhanced following the major earthquakes in Michoacan, Mexico as reported in the issue of September 19 as:
"Areas likely to see far-field seismic enhancement from this earthquake include:
P- and S- shadow zone edge and node 7 (101-110 degrees): Mexico to Greece. Turkey, Vanuatu, Hokkaido, Southern Mid-Atlantic, Lake Baykal, Mariana Islands, South Island, New Zealand, Volcano Islands, Greece, SE Honshu, Japan, Bonin Islands, Central Japan, New Guinea," (September 19-20, 2022)
Today's earthquake in New Zealand was located near 100 degrees from the strong earthquakes in Mexico and may have been promoted by energy from those sources.
Forecasts 146784 and 147041 had expected today's event was likely within about 100 km around September 20-23.
O: 22SEP2022 09:07:04 40.8S 174.2E Mw=5.2 EMSC COOK STRAIT, NEW ZEALAND
O: 22SEP2022 09:07:06 40.8S 174.2E MS=5.8 GEONET Felt with moderate to strong intensity
P: 20SEP2022 146784 40.0S 174.0E 3.0-4.5 AAAAA North Island, N.Z.
P: 23SEP2022 147041 40.0S 174.0E 3.0-4.4 AAAAA North Island, N.Z.
The strongest earthquake in the U.S. or Canada today was an M 3.9 off the cost of Oregon. It was not reported felt in this remote area. It occurred within minutes of local solar midnight and was probably promoted by high tidal stresses which maximize near this hour. Forecast 146951 had expected enhanced seismicity within about 50 km of this epicenter was likely around September 22.
O: 22SEP2022 08:47:50 43.5N 127.1W mb=3.9 EMSC OFF COAST OF OREGON
P: 22SEP2022 146951 43.1N 126.5W 3.0-4.7 AAAAA Off Coast of Oregon
A light earthquake of M 3.1-3.5 also shook regions of northerm Washington State near Seattle today. NEIC reported this earthquake of M 3.5 in Washington State was felt with intensity II-III in the area(s) of Washington State in Forks, Sequim, Langley, Seattle, Snohomish, Redmond, Rockaway Beach and Beaverton and in Parksville, British Colombia, Canada. This is the strongest earthquake within about 100 km of this epicenter since an M 4.5 on January 24, 2020. At the time this summary noted in regard to seismicity in this region:
"An earthquake of M 4.5 also occurred today west of Washington State and British Columbia. NEIC reported maximum intensity III in British Columbia at Ucluelet, Port Alberni, Lake Cowichan, Sooke, Parksville and Duncan and in Washington at Sekiu, Clallam, Beaver, Forks. This epicenter is near the longitude of maximum tidal stress for this new moon and, like the earthquakes in Turkey was probably enhanced by those stresses. This is an unusual epicenter and the event occurred within an hour of local solar noon, suggesting the influence of tidal stresses with the new moon. Today's event is the strongest within about 200 km of this epicenter since an M 4.9 on December 30, 2015 about 200 km east of today's epicenter and M 4.8 within about 100 km on January 8, 2015." (January 25, 2020)
Forecast 146965 had expected this event in this region was likely around September 28
O: 22SEP2022 14:41:56 48.1N 124.7W Ml=3.5 EMSC OFFSHORE WASHINGTON
O: 22SEP2022 14:41:56 48.1N 124.7W Ml=3.5 ANSS OFFSHORE WASHINGTON
O: 22SEP2022 14:41:57 48.1N 124.7W MB=3.1 ECAN of Port Renfrew, BC
P: 28SEP2022 146965 48.9N 123.1W 2.0-3.9 CABAA Washington state, U.S.
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: 23SEP2022 15:59:22 24.8N 121.9E ML=4.0 TAI Hualien, Taiwan
P: 22SEP2022 146870 24.0N 121.0E 4.0-5.4 AAAAA Taiwan
CWB reported this earthquake was felt with intensity III in Yilan and I in Hualien, and Taipei Counties, Taiwan.
O: 23SEP2022 14:32:28 33.7N 82.0E mb=4.3 EMSC WESTERN XIZANG
P: 25SEP2022 146928 30.0N 82.0E 3.8-5.6 ACAAA Xizang
O: 23SEP2022 23:33:09 36.5N 71.2E mb=4.1 EMSC HINDU KUSH REGION, AFGHANISTAN
P: 22SEP2022 146889 37.0N 72.0E 3.8-5.2 AAAAA Hindu Kush/Pakistan
O: 24SEP2022 02:13:11 50.0N 90.0E mb=4.3 EMSC SOUTHWESTERN SIBERIA, RUSSIA
P: 21SEP2022 146983 50.0N 88.0E 3.0-4.4 BABAA So. Siberia
No significant (M>=5) or unusual earthquakes were reported in Asia today.
INDONESIA AND PHILIPPINES
O: 23SEP2022 16:12:52 0.1S 126.2E ML=4.1 EMSC MOLUCCA SEA
P: 24SEP2022 146804 1.0S 127.0E 4.0-5.4 AAAAA Ceram area
O: 23SEP2022 09:50:17 0.2N 123.6E mb=4.9 EMSC MINAHASA, SULAWESI, INDONESIA
P: 27SEP2022 146800 0.0N 124.0E 4.0-5.4 BAAAA Mindanao, Philippines
O: 23SEP2022 20:52:58 4.0N 96.1E Mw=6.2 EMSC NORTHERN SUMATRA, INDONESIA
P: 23SEP2022 146801 3.0N 94.0E 4.0-5.4 AABAA Nicobar Islands
O: 23SEP2022 21:11:51 5.2S 125.7E ML=4.6 EMSC BANDA SEA
O: 23SEP2022 21:20:08 5.2S 125.7E mb=4.6 EMSC BANDA SEA
O: 23SEP2022 21:39:25 5.2S 125.6E ML=4.4 EMSC BANDA SEA
O: 23SEP2022 21:52:11 5.3S 125.7E ML=4.3 EMSC BANDA SEA
O: 23SEP2022 20:51:25 5.2S 125.6E Mw=5.4 EMSC BANDA SEA
P: 27SEP2022 146804 3.0S 126.0E 4.0-5.6 BCAAA Ceram area
O: 23SEP2022 12:34:27 6.0S 148.7E Mw=5.4 EMSC NEW BRITAIN REGION, P.N.G.
P: 22SEP2022 146811 6.0S 148.0E 4.0-5.5 AAAAA New Ireland
O: 23SEP2022 15:22:45 6.1S 153.7E mb=4.7 EMSC NEW BRITAIN REGION, P.N.G.
P: 25SEP2022 146810 5.0S 153.0E 4.0-5.4 ABAAA New Britain
O: 23SEP2022 13:36:50 7.7S 127.7E ML=4.2 EMSC KEPULAUAN BARAT DAYA, INDONESIA
O: 23SEP2022 07:19:15 7.7S 127.6E mb=4.3 EMSC KEPULAUAN BARAT DAYA, INDONESI
P: 17SEP2022 146537 7.0S 128.0E 4.0-5.5 CAAAA Banda Sea
CENTRAL AND SOUTH AMERICA
O: 23SEP2022 11:42:46 18.2N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 23SEP2022 18:26:00 18.5N 103.7W Mw=5.2 EMSC OFFSHORE MICHOACAN, MEXICO
O: 23SEP2022 07:57:19 18.2N 103.1W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
P: 23SEP2022 146830 18.0N 104.0W 3.5-6.4 AAAAA Coast of Jalisco, Mexico
P: 24SEP2022 146841 18.0N 103.0W 3.5-6.1 AAAAA Michoacan, Mexico
O: 23SEP2022 23:44:44 1.8S 80.6W mb=4.3 EMSC NEAR COAST OF ECUADOR
P: 22SEP2022 146805 1.0S 81.0W 4.0-5.8 AAAAA Ecuador
O: 23SEP2022 17:58:54 8.6S 80.3W mb=4.6 EMSC OFF COAST OF NORTHERN PERU
P: 28SEP2022 146813 9.0S 80.0W 4.0-5.6 BAAAA No. Peru
O: 24SEP2022 06:58:29 13.1N 88.8W mb=4.6 EMSC OFFSHORE EL SALVADOR
P: 25SEP2022 146844 14.0N 88.0W 3.5-5.3 AAAAA Nicaragua
O: 24SEP2022 00:14:38 13.3N 89.5W mb=4.1 EMSC OFFSHORE EL SALVADOR
P: 27SEP2022 146832 14.0N 90.0W 3.5-5.5 BAAAA Guatemala
NEIC reported this earthquake of M 4.1 in El Salvador was felt with intensity II-III in the area(s) of El Salvador in San Salvador.
O: 23SEP2022 07:06:50 15.4N 96.5W ML=4.1 EMSC OFFSHORE OAXACA, MEXICO
P: 25SEP2022 146849 17.0N 96.0W 3.5-5.4 ABAAA Oaxaca, Mexico
O: 23SEP2022 16:42:06 18.6N 66.4W Md=3.0 EMSC PUERTO RICO REGION
P: 21SEP2022 146851 18.0N 66.0W 3.4-5.1 AAAAA Puerto Rico
O: 23SEP2022 21:00:45 18.6N 73.7W ML=3.5 EMSC HAITI REGION
P: 25SEP2022 146852 19.0N 74.0W 3.4-5.1 AAAAA Puerto Rico
O: 24SEP2022 05:09:00 19.0N 64.4W ML=3.0 EMSC VIRGIN ISLANDS REGION
P: 22SEP2022 146855 20.0N 65.0W 3.0-4.4 AAAAA Bahamas/No. Caribbean
P: 24SEP2022 146835 18.0N 64.0W 3.0-5.0 AAAAA Leeward Islands
O: 23SEP2022 17:48:17 22.2S 66.1W ML=4.2 EMSC JUJUY, ARGENTINA
O: 24SEP2022 05:57:44 24.0S 66.9W mb=4.2 EMSC JUJUY, ARGENTINA
O: 23SEP2022 07:49:15 23.5S 67.5W mb=4.5 EMSC ANTOFAGASTA, CHILE
P: 22SEP2022 147021 23.0S 66.0W 4.0-5.6 AABAA Argentina
O: 23SEP2022 20:18:23 25.0N 105.2W ML=4.1 EMSC DURANGO, MEXICO
P: 30SEP2022 146858 24.0N 109.0W 3.5-5.0 CACAA Gulf of California
O: 23SEP2022 20:17:03 29.0S 71.6W mb=4.9 EMSC OFFSHORE ATACAMA, CHILE
P: 23SEP2022 147035 30.0S 70.0W 4.0-5.7 AAAAA Coast Central Chile
O: 23SEP2022 22:53:26 41.3S 75.6W Mw=6.1 EMSC OFF COAST OF LOS LAGOS, CHILE
O: 23SEP2022 22:53 41.4S 75.5W mb=6.0 GUC Los Lagos at Ancud, Calbuco, C
P: 23SEP2022 147034 39.0S 73.0W 4.0-5.5 ACBAA Central Chile
AFRICA AND EUROPE
O: 23SEP2022 21:02:51 23.6S 28.2E ML=3.3 EMSC SOUTH AFRICA
P: 14SEP2022 146763 27.0S 27.0E 3.0-4.4 CCAAA Rep. South Africa
O: 23SEP2022 16:22:54 36.8N 7.3E mb=3.9 EMSC NORTHERN ALGERIA
P: 28SEP2022 146927 37.0N 4.0E 3.0-4.7 BACAA Western Mediterranean
O: 24SEP2022 04:47:31 77.5N 7.4E mb=4.2 EMSC SVALBARD REGION
P: 22SEP2022 147002 79.0N 7.0E 4.0-5.8 ABAAA Arctic Ocean Region
No significant (M>=5) or unusual earthquakes were reported in Europe today.
SOUTHWEST PACIFIC
O: 23SEP2022 16:06:05 13.2S 167.2E mb=4.9 EMSC VANUATU
P: 26SEP2022 147020 14.0S 167.0E 4.0-5.4 BAAAA Vanuatu Islands
O: 23SEP2022 19:03:01 21.5S 179.3W Mw=5.3 EMSC FIJI REGION
P: 25SEP2022 147030 21.0S 179.0W 4.0-5.4 AAAAA Tonga Islands
OCEAN RIDGES
No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.
ZEALANDIA AND AUSTRALIA REGION
O: 23SEP2022 19:05:12 34.0S 178.1E ML=4.3 EMSC SOUTH OF KERMADEC ISLANDS
P: 23SEP2022 147037 37.0S 178.0E 3.0-4.7 ACAAA North Island, N.Z.
JAPAN AND KURIL ISLANDS
O: 24SEP2022 03:36:09 35.4N 135.4E mb=4.1 EMSC WESTERN HONSHU, JAPAN
O: 23SEP2022 18:34:30 34.8N 135.3E ML=4.0 EMSC NEAR S. COAST OF WESTERN HONSH
P: 24SEP2022 146885 34.0N 137.0E 3.5-5.0 ABBAA Central/So. Honshu Japan
O: 24SEP2022 01:00:18 37.9N 141.8E mb=4.6 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 26SEP2022 146903 37.0N 142.0E 4.0-5.4 AAAAA Off East Coast Honshu
O: 24SEP2022 06:16:52 42.6N 143.2E mb=4.4 EMSC HOKKAIDO, JAPAN REGION
P: 20SEP2022 146668 44.0N 142.0E 3.5-5.4 BBAAA Hokkaido, Japan
O: 23SEP2022 07:08:57 49.7N 156.0E mb=4.6 EMSC KURIL ISLANDS
P: 20SEP2022 146678 49.0N 156.0E 3.5-5.6 BAAAA NE Pacific
P: 24SEP2022 146943 49.0N 155.0E 3.5-5.8 AAAAA NE Pacific
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 23SEP2022 21:04:52 31.4N 115.5W ML=3.4 EMSC BAJA CALIFORNIA, MEXICO
O: 23SEP2022 20:35:43 31.4N 115.7W ML=3.4 EMSC BAJA CALIFORNIA, MEXICO
P: 26SEP2022 146908 32.1N 116.4W 2.5-4.4 BAAAA So. California
O: 23SEP2022 10:41:19 33.0N 116.3W Ml=2.1 EMSC SOUTHERN CALIFORNIA
P: 23SEP2022 146908 33.1N 116.2W 2.5-4.4 AAAAA So. California
O: 23SEP2022 13:37:02 35.5N 118.3W Ml=2.1 EMSC CENTRAL CALIFORNIA
P: 24SEP2022 146916 35.6N 118.4W 2.5-4.4 AAAAA So. California
O: 24SEP2022 04:47:05 38.2N 117.8W ml=2.2 EMSC NEVADA
P: 26SEP2022 146876 37.8N 118.4W 2.5-4.4 AAAAA California/Nevada area
O: 23SEP2022 13:04:07 39.3N 123.0W Md=2.1 EMSC NORTHERN CALIFORNIA
P: 23SEP2022 146884 39.2N 123.1W 2.5-4.7 AAAAA Central California
ALASKA
O: 23SEP2022 12:54:20 52.0N 178.5E ML=3.0 EMSC RAT ISLANDS, ALEUTIAN ISLANDS
P: 24SEP2022 146981 51.0N 178.0E 4.0-5.6 AAAAA Rat Islands
O: 23SEP2022 10:20:58 57.5N 154.2W ML=3.6 EMSC KODIAK ISLAND REGION, ALASKA
P: 24SEP2022 146989 60.3N 153.0W 3.2-5.1 ACAAA Central Alaska
O: 24SEP2022 06:13:50 63.2N 150.8W ML=3.2 EMSC CENTRAL ALASKA
O: 23SEP2022 07:07:58 62.9N 149.7W ML=3.2 EMSC CENTRAL ALASKA
P: 24SEP2022 146991 64.3N 151.0W 3.2-5.0 ABAAA Central Alaska
PACIFIC NORTHWESTERN U.S./WESTERN CANADA
O: 23SEP2022 18:26:46 43.7N 128.6W ML=3.4 EMSC OFF COAST OF OREGON
P: 24SEP2022 146952 44.1N 128.8W 3.0-4.5 AAAAA Off Coast of Oregon
ROCKY MOUNTAINS REGION
O: 23SEP2022 10:15:02 31.7N 104.5W ML=2.0 EMSC WESTERN TEXAS
O: 23SEP2022 15:48:28 31.7N 104.4W ML=2.5 EMSC WESTERN TEXAS
O: 23SEP2022 21:05:42 31.6N 104.3W ML=2.6 EMSC WESTERN TEXAS
P: 24SEP2022 146906 32.5N 104.6W 2.0-3.9 AAAAA SW U.S.A
P: 27SEP2022 146906 31.6N 104.6W 2.0-3.9 BAAAA SW U.S.A
O: 23SEP2022 10:34:20 44.3N 115.1W ML=2.4 EMSC SOUTHERN IDAHO
P: 24SEP2022 146940 44.4N 115.2W 2.0-4.4 AAAAA Montana/Idaho
EASTERN U.S./CANADA
O: 23SEP2022 08:46:49 36.5N 98.5W ML=2.0 EMSC OKLAHOMA
P: 25SEP2022 146921 36.0N 97.0W 2.0-4.1 AAAAA Southern Plains
P: 28SEP2022 146922 37.0N 98.0W 2.0-4.1 BAAAA Southern Plains
O: 22SEP2022 21:12:59 48.4N 57.5W MB=2.6 ECAN of Corner Brook, NL
O: 22SEP2022 16:10:40 50.2N 94.6W MB=1.9 ECAN of Wabaseemoong, ON
HAWAII
O: 23SEP2022 07:17:06 19.1N 156.4W ML=3.1 EMSC HAWAII REGION, HAWAII
P: 18SEP2022 146587 20.1N 156.1W 4.0-5.4 BAAAA Hawaii area
O: 24SEP2022 06:43:50 19.3N 155.4W ML=3.8 EMSC ISLAND OF HAWAII, HAWAII
P: 24SEP2022 146833 19.3N 155.2W 3.0-4.5 AAAAA Hawaii
MAJOR AFTERSHOCK SHAKES MICHOACAN, MEXICO
EARTHQUAKE SUMMARY FOR SEPTEMBER 21, 2022
A strong to major aftershock of the M 7.6 earthquake in Michoacan, Mexico occurred today. This event of M 6.8 occurred within minutes of local solar midnight and was probably promoted by tidal and geomagnetic effects which maximize near this hour. At least two additional persons were killed by this earthquake - one by a heart attack and a second after falling down stairs after hearing earthquake alarms. Additional damage and injuries were sustained in this quake. Two were also killed in the mainshock of September 19. NEIC reported it was felt with maximum intensity VIII in Michoacan at Arteaga; IV in La Orilla, V in Armenia and Comala, Colima; IV in Lazaro Cardenas, Michoacan, Colima, Colima, Villa de Alvarez and La Huscana. Many were panicked by this late night earthquake. No tsunami was expected with today's event. The timing of this earthquake is similar to the M 7.6 in 1985 which followed the M 8.2 of September 19, 1995. That aftershock occurred on September 21, 1985, and like that today added damage to the mainshock. Both of these aftershocks occurred east of their respective mainshock two days after. This event was noted in the previous issue of this summary in the "HISTORY" section as:
" 9 21 1 37 13 1985 17.802 -101.647 31 7.6 Michoacan, Mexico
Aftershock of the Mexico City earthquake of Sept. 19, 1985. This earthquake caused additional casualties and damage with maximum intensity up to VI in Mexico City. It was felt throughout central Mexico. A tsunami was generated which was recorded at Acapulco with 1.4 meters. Well fluctuations were recorded at Santa Fe, N. M." (September 21, 2022)
Today's major aftershock in Michoacan today may have been promoted by Hurricane Newton which continued near this epicenter to the west of Michoacan, Mexico today. The effect of this storm on the aftershock pattern had been noted in the previous issue of this summary as:
"TD 15E formed today southwest of Michoacan, Nexico with winds up to 40 kts. It is expected to track to the west and may enhance aftershocks in the next several days in Michoacan and Colima, Mexico." (September 20, 2022)
Forecasts 146830 and 146841 had expected today's activity was likely around September 23-24 as a strong aftershock of the M 7.6 of September 19, 2022 in Michoacan and Jalisco, Mexico.
O: 21SEP2022 11:52:21 17.9N 103.1W ML=4.2 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 18:47:35 18.0N 103.4W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 07:21:34 18.1N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 22SEP2022 03:58:07 18.1N 103.3W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 22SEP2022 06:50:54 18.1N 103.2W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 07:48:10 18.2N 103.8W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 15:59:23 18.2N 103.4W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 20:10:17 18.2N 103.7W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 22SEP2022 06:16:09 18.3N 102.9W Mw=6.8 EMSC MICHOACAN, MEXICO
O: 21SEP2022 09:36:29 18.5N 103.9W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 22SEP2022 09:00:49 18.5N 103.9W ML=4.5 EMSC OFFSHORE MICHOACAN, MEXICO
O: 22SEP2022 09:14:59 18.5N 103.8W ML=4.2 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 06:19:15 18.6N 103.6W ML=4.0 EMSC MICHOACAN, MEXICO
O: 21SEP2022 15:20:02 18.6N 103.6W ML=4.0 EMSC MICHOACAN, MEXICO
O: 21SEP2022 19:17:17 18.7N 103.4W ML=4.2 EMSC MICHOACAN, MEXICO
O: 22SEP2022 09:06:30 18.8N 103.8W ML=4.3 EMSC OFFSHORE COLIMA, MEXICO
P: 23SEP2022 146830 18.0N 104.0W 3.5-6.4 AAAAA Coast of Jalisco, Mexico
P: 24SEP2022 146841 18.0N 103.0W 3.5-6.1 AAAAA Michoacan, Mexico
A moderate earthquake of M 4.0 occurred in the region of the Dominican Republic today. NEIC reported it was felt with intensity II in Santo Domingo. It was accompanied by earthquakes of M 3.7 and M 3.8 in Puerto Rico. This may be a reaction to the stresses associated with Hurricane Fiona which passed over this epicenter two days ago. This summary had noted this possibility in previous issues as:
"TS Fiona continued north of Dominican Republic with winds up to 115 kts. Major flooding and complete power outage occurred on Puerto Rico today. It is expected to track to the north and west over the next several days. It could help promote enhanced seismicity in the region of Puerto Rico and the Dominican Republic in the next several days." (September 19-21, 2022)
This activity had been expected in forecasts 146851 and 146852 around September 21-24. This activity is located at 144 degrees from the M 7.0 in Luzon, Philippines of July 27 and the M 7.6 in New Guinea of September 10, 2022 and was probably promoted by energy from those sources.
O: 22SEP2022 04:49:33 19.3N 67.2W Md=3.8 EMSC PUERTO RICO REGION
O: 21SEP2022 09:06:02 18.1N 69.7W ML=3.0 EMSC DOMINICAN REPUBLIC REGION
P: 24SEP2022 146852 19.0N 71.0W 3.4-5.1 BAAAA Puerto Rico
O: 22SEP2022 02:57:12 18.7N 68.1W ML=3.7 EMSC DOMINICAN REPUBLIC REGION
P: 21SEP2022 146851 18.0N 66.0W 3.4-5.1 ABAAA Puerto Rico
O: 21SEP2022 12:40:16 19.8N 71.6W ML=3.5 EMSC DOMINICAN REPUBLIC
O: 21SEP2022 12:40:16 19.8N 71.6W ML=4.0 ANSS DOMINICAN REPUBLIC
P: 24SEP2022 146852 19.0N 71.0W 3.4-5.1 BAAAA Puerto Rico
A moderately strong M 5.7 also occurred today as an aftershock of the M 7.6 in Papua New Guinea of September 10. NEIC reported it was felt with intensity IV in New Guinea at Lae, Kainantu, Goroka and III in Fort Moresby. This event is about 100 km southwest of the mainshock of September 10 and may have been promoted by regional stress redistribution.
Forecast 146811 had expected this activity was likely to be enhanced around September 22-23.
O: 21SEP2022 09:30:47 5.5S 147.0E Mw=5.7 EMSC EASTERN NEW GUINEA REG., P.N.G
P: 22SEP2022 146811 6.0S 146.0E 4.0-5.4 AAAAA New Ireland
P: 22SEP2022 146811 6.0S 148.0E 4.0-5.5 AAAAA New Ireland
The strongest earthquake in the U.S. or Canada today was an M 3.9 off the coast of Oregon. It was not reported felt in this remote area. It occurred within minutes of local solar midnight and was probably promoted by high tidal stresses which maximize near this hour. Forecast 146951 had expected enhanced seismicity within about 50 km of this epicenter was likely around September 22.
O: 22SEP2022 08:47:50 43.5N 127.1W mb=3.9 EMSC OFF COAST OF OREGON
P: 22SEP2022 146951 43.1N 126.5W 3.0-4.7 AAAAA Off Coast of Oregon
A moderately large earthquake was also reported in the French Pass region of Northern South Island, New Zealand. GEONET gives this M 5.2 (MC) - 5.8 (GEONET). GEONET reported this earthquake was felt with moderate to strong intensity in the area southeast of Wellington, New Zealand and in southern North Island and northern South Island. 44548 reports of felt events were made of which 11817 reported weak and 23641 light intensity with 8145 report of moderate shaking and 866 with strong and 35 severe and 44 with extreme intensity came from the area. Seismicity in this area had been anticipated in this summary to be enhanced following the major earthquakes in Michoacan, Mexico as reported in the issue of September 19 as:
"Areas likely to see far-field seismic enhancement from this earthquake include:
P- and S- shadow zone edge and node 7 (101-110 degrees): Mexico to Greece. Turkey, Vanuatu, Hokkaido, Southern Mid-Atlantic, Lake Baykal, Mariana Islands, South Island, New Zealand, Volcano Islands, Greece, SE Honshu, Japan, Bonin Islands, Central Japan, New Guinea," (September 19-20, 2022)
Today's earthquake in New Zealand was located near 100 degrees from the strong earthquakes in Mexico and may have been promoted by energy from those sources.
Forecasts 146784 and 147041 had expected today's event was likely within about 100 km around September 20-23.
O: 22SEP2022 09:07:04 40.8S 174.2E Mw=5.2 EMSC COOK STRAIT, NEW ZEALAND
O: 22SEP2022 09:07:06 40.8S 174.2E MS=5.8 GEONET Felt with moderate to strong intensity
P: 20SEP2022 146784 40.0S 174.0E 3.0-4.5 AAAAA North Island, N.Z.
P: 23SEP2022 147041 40.0S 174.0E 3.0-4.4 AAAAA North Island, N.Z.
A pair of moderate earthquakes also occurred in the area east of Tokyo, Japan today. This summary had expected enhanced seismicity in Japan at this time in previous issues as several typhoons have passed over the area in the last few days, including Super-Typhoon Nanmadol. This summary had expected this relation in previous issues as:
"Typhoon Nanmadol (TD 16W) continued today over central Honshu, Japan with winds up to 55 kts. It is expected to track to the northeast over the next several days. A moderate to strong earthquake is possible as this storm passes through southern and central Japan. This is most likely around September 20-21 in Honshu, Japan." (September 19-20, 2022)
Forecasts 146885 and 146903 had expected this enhanced activity was likely between September 22 and 26 within about 100 km of these epicenters.
O: 21SEP2022 22:36:52 35.3N 141.3E mb=4.8 EMSC NEAR EAST COAST OF HONSHU, JAPAN
O: 21SEP2022 22:24:43 35.3N 141.2E Mw=5.0 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 22SEP2022 146885 35.0N 139.0E 3.5-5.1 AABAA Central/So. Honshu Japan
P: 26SEP2022 146903 36.0N 141.0E 4.0-5.6 BAAAA Off East Coast Honshu
Two moderate earthquakes also occurred south of Iceland in the Northern Mid-Atlantic Ridge today with M 4.5 and 4.8. This may have been affected by stresses associated with Tropical Storm Gaston which is currently in the area as noted in this summary:
"TS Gaston continued in the area west of the Azores Islands in the North Atlantic with winds up to 65 kts. An M 4.9 near this epicenter occurred on September 20, 2022 and may have been triggered by stresses from this storm. More such activity in the North Atlantic may continue in the next several days." (September 21, 2022)
Forecast 146716 had expected this event within about 100 km was likely around September 17. This epicenter is located at 144 degrees from the M 7.0 in the Loyalty Islands of September 14, 2022 and at 102 degrees from the M 6.9 in Taiwan of September 18, 2022 and was probably promoted by energy from those sources.
O: 21SEP2022 08:25:34 52.7N 31.8W mb=4.8 EMSC NORTHERN MID-ATLANTIC RIDGE
O: 21SEP2022 11:49:40 52.7N 31.5W mb=4.5 EMSC NORTHERN MID-ATLANTIC RIDGE
P: 17SEP2022 146716 52.0N 30.0W 4.0-5.6 BAAAA North Mid-Atlantic Ridge
An earthquake of M 3.0 occurred today in the Sao Paulo region of Brazil today. The only event of larger magnitude within about 300 km of this epicenter in the past 30 years recorded by NEIC was an M 4.1 on May 22, 1998. An M 2.9-3.0 was also registered on July 26, 2018 about 300 km west of today's epicenter. Today's event is located near the antipode of the M 6.9 in Taiwan of September 14 and at the antipode of TD 17 and may have been promoted by energy from those sources.
O: 21SEP2022 08:50:54 21.7S 46.7W ML=3.0 EMSC INAS GERAIS-SAO PAULO, BRAZIL
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 22SEP2022 01:04:46 23.3N 121.3E ML=4.3 TAI Hualien, Taiwan
P: 20SEP2022 146597 23.0N 121.0E 4.0-5.5 AAAAA Taiwan
CWB reported this earthquake was felt with intensity III in Taitung, II in Hualien, Nantou, I in Kaohsiung, Yunlin, and Chiayi Counties, Taiwan.
O: 22SEP2022 06:31:50 34.1N 83.3E ML=4.3 EMSC WESTERN XIZANG
P: 25SEP2022 146928 30.0N 82.0E 3.8-5.6 BCAAA Xizang
O: 21SEP2022 17:57:58 38.4N 45.1E Mw=5.1 EMSC NORTHWESTERN IRAN
P: 22SEP2022 146925 38.0N 44.0E 3.5-4.9 AAAAA Turkey
NEIC reported this earthquake of M 5.1 in Turkey-Iran border was felt with intensity II-III in the area(s) of Turkey-Iran border in Tabriz, Iran.
O: 21SEP2022 09:22:21 54.8N 160.1E mb=4.3 EMSC NEAR EAST COAST OF KAMCHATKA
P: 22SEP2022 146974 53.0N 160.0E 4.0-5.7 ABAAA E. of Kamchatka
INDONESIA AND PHILIPPINES
O: 21SEP2022 21:50:35 2.1S 138.9E mb=4.4 EMSC PAPUA, INDONESIA
P: 15SEP2022 146548 3.0S 138.0E 4.0-5.4 CAAAA Papua New Guinea
O: 21SEP2022 15:29:44 2.3N 126.8E mb=4.3 EMSC MOLUCCA SEA
P: 28SEP2022 146798 2.0N 128.0E 4.0-5.4 CAAAA Halmahera
O: 22SEP2022 06:01:32 2.7S 141.9E ML=4.0 EMSC NEAR N COAST OF NEW GUINEA, PN
P: 16SEP2022 146548 3.0S 142.0E 4.0-5.4 CAAAA Papua New Guinea
O: 21SEP2022 06:50:26 3.6N 125.9E ML=4.1 EMSC KEPULAUAN SANGIHE, INDONESIA
P: 23SEP2022 146800 4.0N 126.0E 4.0-5.4 AAAAA Mindanao, Philippines
O: 21SEP2022 09:30:47 5.5S 147.0E Mw=5.7 EMSC EASTERN NEW GUINEA REG., P.N.G
P: 22SEP2022 146811 6.0S 146.0E 4.0-5.4 AAAAA New Ireland
P: 22SEP2022 146811 6.0S 148.0E 4.0-5.5 AAAAA New Ireland
O: 21SEP2022 11:57:51 6.1S 131.0E mb=5.0 EMSC KEP. TANIMBAR REGION, INDONESI
P: 22SEP2022 146822 6.0S 130.0E 4.0-5.5 AAAAA West Irian, PNG
O: 21SEP2022 15:49:42 6.1S 147.5E mb=4.8 EMSC EASTERN NEW GUINEA REG., P.N.G
P: 22SEP2022 146811 6.0S 148.0E 4.0-5.5 AAAAA New Ireland
O: 21SEP2022 17:37:08 6.4N 126.4E mb=4.5 EMSC MINDANAO, PHILIPPINES
P: 22SEP2022 146799 9.0N 127.0E 4.0-5.6 ACAAA Halmahera
P: 23SEP2022 146800 4.0N 126.0E 4.0-5.4 ACAAA Mindanao, Philippines
O: 21SEP2022 14:28:51 14.7N 121.6E ML=4.5 EMSC LUZON, PHILIPPINES
P: 24SEP2022 146837 14.0N 122.0E 3.5-5.0 BAAAA Luzon, Philippines
O: 21SEP2022 23:59:37 9.7S 119.6E mb=4.3 EMSC SUMBA REGION, INDONESIA
P: 26SEP2022 146806 7.0S 120.0E 4.0-5.4 BCAAA Flores Island area
O: 21SEP2022 19:41:11 11.5S 119.2E mb=4.7 EMSC SOUTH OF SUMBA, INDONESIA
P: 25SEP2022 147015 11.0S 118.0E 4.0-5.4 BABAA So. of Indonesia
CENTRAL AND SOUTH AMERICA
O: 22SEP2022 08:31:12 13.1N 89.6W mb=4.0 EMSC OFFSHORE EL SALVADOR
P: 27SEP2022 146832 14.0N 90.0W 3.5-5.5 BAAAA Guatemala
O: 22SEP2022 05:44:45 16.0N 95.1W ML=4.0 EMSC OFFSHORE OAXACA, MEXICO
P: 21SEP2022 146848 16.0N 95.0W 3.5-5.3 AAAAA Oaxaca, Mexico
O: 22SEP2022 03:34:56 16.5S 74.0W ML=4.3 EMSC NEAR COAST OF SOUTHERN PERU
P: 21SEP2022 147013 16.0S 74.0W 4.0-5.6 AAAAA So. Peru/Bolivia
O: 21SEP2022 23:46:34 17.3N 95.1W ML=4.0 EMSC OAXACA, MEXICO
P: 25SEP2022 146849 17.0N 96.0W 3.5-5.4 BAAAA Oaxaca, Mexico
O: 22SEP2022 04:49:33 19.3N 67.2W Md=3.8 EMSC PUERTO RICO REGION
O: 21SEP2022 09:06:02 18.1N 69.7W ML=3.0 EMSC DOMINICAN REPUBLIC REGION
P: 24SEP2022 146852 19.0N 71.0W 3.4-5.1 BAAAA Puerto Rico
O: 21SEP2022 19:42:07 20.2S 69.1W mb=4.2 EMSC TARAPACA, CHILE
P: 24SEP2022 147024 21.0S 69.0W 4.0-5.4 BAAAA Coast No. Chile
NEIC reported this earthquake of M 4.2 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile in Iquique, Tarapaca.
O: 22SEP2022 07:32:08 21.4S 66.7W mb=4.5 EMSC POTOSI, BOLIVIA
P: 19SEP2022 146757 21.0S 67.0W 4.0-5.4 BAAAA Argentina
O: 21SEP2022 08:50:54 21.7S 46.7W ML=3.0 EMSC INAS GERAIS-SAO PAULO, BRAZIL
O: 22SEP2022 04:06:48 22.4S 67.7W mb=4.7 EMSC POTOSI, BOLIVIA
P: 21SEP2022 147021 22.0S 68.0W 4.0-5.6 AAAAA Argentina
O: 22SEP2022 03:33:48 24.1S 66.9W ML=4.0 EMSC SALTA, ARGENTINA
P: 22SEP2022 147021 23.0S 66.0W 4.0-5.6 ABAAA Argentina
O: 21SEP2022 11:52:21 17.9N 103.1W ML=4.2 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 18:47:35 18.0N 103.4W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 07:21:34 18.1N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 22SEP2022 03:58:07 18.1N 103.3W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 22SEP2022 06:50:54 18.1N 103.2W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 07:48:10 18.2N 103.8W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 15:59:23 18.2N 103.4W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 20:10:17 18.2N 103.7W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 22SEP2022 06:16:09 18.3N 102.9W Mw=6.8 EMSC MICHOACAN, MEXICO
O: 21SEP2022 09:36:29 18.5N 103.9W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 22SEP2022 09:00:49 18.5N 103.9W ML=4.5 EMSC OFFSHORE MICHOACAN, MEXICO
O: 22SEP2022 09:14:59 18.5N 103.8W ML=4.2 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 06:19:15 18.6N 103.6W ML=4.0 EMSC MICHOACAN, MEXICO
O: 21SEP2022 15:20:02 18.6N 103.6W ML=4.0 EMSC MICHOACAN, MEXICO
O: 21SEP2022 19:17:17 18.7N 103.4W ML=4.2 EMSC MICHOACAN, MEXICO
O: 22SEP2022 09:06:30 18.8N 103.8W ML=4.3 EMSC OFFSHORE COLIMA, MEXICO
P: 23SEP2022 146830 18.0N 104.0W 3.5-6.4 AAAAA Coast of Jalisco, Mexico
P: 24SEP2022 146841 18.0N 103.0W 3.5-6.1 AAAAA Michoacan, Mexico
O: 22SEP2022 04:49:33 19.3N 67.2W Md=3.8 EMSC PUERTO RICO REGION
AFRICA AND EUROPE
O: 22SEP2022 02:21:28 37.6N 14.9E ML=3.8 EMSC SICILY, ITALY
P: 17SEP2022 146621 39.0N 15.0E 3.0-4.4 BBAAA Mediterranean/Sicily
O: 21SEP2022 13:19:15 63.9N 22.4W ML=3.6 EMSC ICELAND REGION
P: 19SEP2022 146734 63.0N 26.0W 3.0-4.5 AABAA Iceland area
P: 26SEP2022 146993 63.0N 24.0W 3.0-4.6 BAAAA Iceland area
O: 21SEP2022 07:32:34 78.5N 6.6E Mw=4.0 EMSC SVALBARD REGION
O: 21SEP2022 17:07:14 78.3N 7.2E Mw=3.4 EMSC SVALBARD REGION
P: 22SEP2022 147002 79.0N 7.0E 4.0-5.8 AAAAA Arctic Ocean Region
SOUTHWEST PACIFIC
O: 21SEP2022 07:06:39 19.0S 167.5E mb=4.9 EMSC VANUATU REGION
P: 21SEP2022 147020 18.0S 168.0E 4.0-5.4 AAAAA Vanuatu Islands
No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.
OCEAN RIDGES
O: 21SEP2022 08:25:34 52.7N 31.8W mb=4.8 EMSC NORTHERN MID-ATLANTIC RIDGE
O: 21SEP2022 11:49:40 52.7N 31.5W mb=4.5 EMSC NORTHERN MID-ATLANTIC RIDGE
P: 17SEP2022 146716 52.0N 30.0W 4.0-5.6 BAAAA North Mid-Atlantic Ridge
ZEALANDIA AND AUSTRALIA REGION
O: 22SEP2022 04:28:16 37.0S 177.0E mb=4.2 EMSC OFF E. COAST OF N. ISLAND, N.Z
O: 22SEP2022 04:28:20 36.8S 177.0E MS=4.8 GEONET Felt with light intensity
P: 23SEP2022 147037 37.0S 178.0E 3.0-4.7 AAAAA North Island, N.Z.
GEONET reported this earthquake was felt with light intensity in the area northeast of Te Araroa. This earthquake was felt with light to moderate intensity throughout most of North Island. 8 responded with felt information for this earthquake including 6 who felt it with weak intensity and 2 with light shaking.
O: 22SEP2022 09:07:04 40.8S 174.2E Mw=5.2 EMSC COOK STRAIT, NEW ZEALAND
O: 22SEP2022 09:07:06 40.8S 174.2E MS=5.8 GEONET Felt with moderate to strong intensity
P: 20SEP2022 146784 40.0S 174.0E 3.0-4.5 AAAAA North Island, N.Z.
P: 23SEP2022 147041 40.0S 174.0E 3.0-4.4 AAAAA North Island, N.Z.
GEONET reported this earthquake was felt with moderate to strong intensity in the area southeast of Wellington, New Zealand and in southern North Island and northern South Island. 44548 reports of felt events were made of which 11817 reported weak and 23641 light intensity with 8145 report of moderate shaking and 866 with strong and 35 severe and 44 with extreme intensity came from the area.
JAPAN AND KURIL ISLANDS
O: 21SEP2022 22:36:52 35.3N 141.3E mb=4.8 EMSC NEAR EAST COAST OF HONSHU, JAPAN
O: 21SEP2022 22:24:43 35.3N 141.2E Mw=5.0 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 22SEP2022 146885 35.0N 139.0E 3.5-5.1 AABAA Central/So. Honshu Japan
P: 26SEP2022 146903 36.0N 141.0E 4.0-5.6 BAAAA Off East Coast Honshu
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 21SEP2022 09:08:50 33.2N 115.6W Ml=2.2 EMSC SOUTHERN CALIFORNIA
O: 21SEP2022 09:10:22 33.2N 115.6W Ml=2.2 EMSC SOUTHERN CALIFORNIA
O: 21SEP2022 09:17:26 33.2N 115.6W Ml=2.2 EMSC SOUTHERN CALIFORNIA
O: 21SEP2022 09:26:31 33.2N 115.6W Ml=2.1 EMSC SOUTHERN CALIFORNIA
O: 21SEP2022 09:29:44 33.2N 115.6W Ml=2.1 EMSC SOUTHERN CALIFORNIA
O: 21SEP2022 09:31:32 33.2N 115.6W Ml=2.1 EMSC SOUTHERN CALIFORNIA
O: 21SEP2022 10:09:58 33.2N 115.6W Ml=2.1 EMSC SOUTHERN CALIFORNIA
O: 21SEP2022 16:56:18 33.0N 116.4W Ml=2.0 EMSC SOUTHERN CALIFORNIA
P: 21SEP2022 146910 33.4N 116.7W 2.5-4.6 AAAAA So. California
P: 23SEP2022 146908 33.1N 116.2W 2.5-4.4 AAAAA So. California
O: 21SEP2022 10:50:48 36.2N 117.8W ML=2.8 EMSC CENTRAL CALIFORNIA
O: 21SEP2022 10:50:48 36.2N 117.8W ML=3.0 ANSS CENTRAL CALIFORNIA
P: 24SEP2022 146874 36.3N 118.1W 2.5-4.4 BAAAA California/Nevada area
NEIC reported this earthquake of M 3.0 in Central California was felt with intensity II-III in the area(s) of Central California in Ridgecrest and Porterville.
O: 21SEP2022 15:49:24 36.7N 121.3W Md=2.0 EMSC CENTRAL CALIFORNIA
O: 22SEP2022 00:26:16 36.6N 121.1W Md=2.2 EMSC CENTRAL CALIFORNIA
P: 24SEP2022 146881 36.7N 121.4W 2.5-4.8 AAAAA Central California
O: 22SEP2022 06:48:29 38.8N 122.8W Md=2.1 EMSC NORTHERN CALIFORNIA
P: 22SEP2022 146883 38.9N 122.8W 2.5-4.6 AAAAA Central California
O: 22SEP2022 05:34:06 39.9N 121.0W MD=2.2 EMSC NORTHERN CALIFORNIA
P: 27SEP2022 146878 39.3N 120.0W 2.5-4.4 BAAAA California/Nevada area
O: 21SEP2022 23:34:04 40.0N 120.8W Md=2.3 EMSC NORTHERN CALIFORNIA
P: 27SEP2022 146949 40.4N 122.2W 2.5-4.7 CABAA Northern California
P: 29SEP2022 146949 40.2N 121.2W 2.5-4.7 CAAAA Northern California
O: 21SEP2022 19:06:57 40.3N 124.5W Md=2.3 EMSC OFFSHORE NORTHERN CALIFORNIA
P: 21SEP2022 146950 40.2N 124.2W 2.5-4.8 AAAAA Off Coast of No. Calif
ALASKA
O: 21SEP2022 08:13:12 61.3N 141.1W ML=3.3 EMSC SOUTHERN ALASKA
O: 21SEP2022 08:13:12 61.3N 141.1W MB=3.5 ECAN of Burwash Landing, YT
P: 24SEP2022 146987 61.3N 140.1W 3.2-5.6 BAAAA Central Alaska
PACIFIC NORTHWESTERN U.S./WESTERN CANADA
O: 22SEP2022 08:47:50 43.5N 127.1W mb=3.9 EMSC OFF COAST OF OREGON
P: 22SEP2022 146951 43.1N 126.5W 3.0-4.7 AAAAA Off Coast of Oregon
O: 21SEP2022 22:07:30 53.7N 123.0W ML=3.2 EMSC BRITISH COLUMBIA, CANADA
O: 21SEP2022 22:07:30 53.7N 122.9W MB=3.4 ECAN of Prince George, BC
O: 21SEP2022 09:53:58 57.0N 122.4W MB=3.2 ECAN of Fort St. John, BC
O: 21SEP2022 09:53:58 57.0N 122.4W ML=3.2 EMSC BRITISH COLUMBIA, CANADA
P: 21SEP2022 146970 56.0N 120.0W 2.0-4.1 AABAA Alberta
NEIC reported this earthquake of M 3.2 in British Columbia was felt with intensity II-III in the area(s) of British Columbia, Canada in Prince George.
ROCKY MOUNTAINS REGION
O: 21SEP2022 12:23:50 31.7N 104.6W ML=2.1 EMSC WESTERN TEXAS
O: 21SEP2022 12:51:37 31.7N 104.4W ML=2.8 EMSC WESTERN TEXAS
O: 21SEP2022 14:35:00 31.7N 104.6W ML=2.4 EMSC WESTERN TEXAS
O: 21SEP2022 15:40:34 31.7N 104.6W ML=2.6 EMSC WESTERN TEXAS
O: 21SEP2022 17:06:19 31.7N 104.1W ML=2.6 EMSC WESTERN TEXAS
O: 21SEP2022 23:46:09 31.7N 104.5W ML=2.5 EMSC WESTERN TEXAS
O: 22SEP2022 01:46:13 31.7N 104.4W ML=2.1 EMSC WESTERN TEXAS
O: 22SEP2022 02:51:35 31.7N 104.4W ML=2.1 EMSC WESTERN TEXAS
O: 22SEP2022 06:19:19 31.7N 102.1W ML=2.8 EMSC WESTERN TEXAS
O: 21SEP2022 12:09:31 31.9N 103.4W ML=2.3 EMSC WESTERN TEXAS
O: 21SEP2022 19:22:02 31.9N 103.4W ML=2.7 EMSC WESTERN TEXAS
O: 21SEP2022 15:28:53 31.6N 104.2W ML=2.3 EMSC WESTERN TEXAS
P: 24SEP2022 146906 32.5N 104.6W 2.0-3.9 BAAAA SW U.S.A
O: 21SEP2022 10:01:32 44.8N 110.8W Ml=2.5 EMSC YELLOWSTONE NAT. PARK, WYOMING
O: 21SEP2022 21:41:26 44.8N 110.8W Ml=2.1 EMSC YELLOWSTONE NAT. PARK, WYOMING
O: 21SEP2022 09:58:29 44.8N 110.8W Ml=2.2 EMSC YELLOWSTONE NAT. PARK, WYOMING
P: 22SEP2022 146967 44.6N 110.8W 2.0-3.9 AAAAA Yellowstone/Wyoming
O: 22SEP2022 05:08:07 44.7N 114.3W ML=2.5 EMSC SOUTHERN IDAHO
P: 24SEP2022 146940 44.4N 115.2W 2.0-4.4 AAAAA Montana/Idaho
EASTERN U.S./CANADA
O: 21SEP2022 13:04:29 36.5N 98.7W ML=2.3 EMSC OKLAHOMA
P: 28SEP2022 146922 37.0N 98.0W 2.0-4.1 CAAAA Southern Plains
HAWAII
No earthquakes of M>=3 were located in Hawaii.
STRONG QUAKE SHAKES KOMANDORSKY ISLANDS, RUSSIA
EARTHQUAKE SUMMARY FOR SEPTEMBER 20, 2022
The strongest earthquake in the world today was an M 6.0 in the Komandorsky Islands, Alaska. It may have been lightly felt as far as Alaska. The last earthquake of larger magnitude than M 6.0 in the Komandorsky Islands occurred as an M 6.6 to the west of today's event on March 16, 2021. These may be regional aftershocks of a major M 7.7 of July 17, 2021 about 100 km southeast of today's epicenter. Forecasts 146713 and 146977 had expected this activity in the Komandorsky Islands was likely between September 16 and 21 within about 100 km of the epicenter.
O: 20SEP2022 18:23:43 55.5N 166.4E Mw=6.0 EMSC KOMANDORSKIYE OSTROVA REGION
O: 20SEP2022 18:56:18 55.6N 166.0E mb=4.2 EMSC KOMANDORSKIYE OSTROVA REGION
O: 20SEP2022 18:22:33 55.5N 166.3E mb=4.5 EMSC KOMANDORSKIYE OSTROVA REGION
P: 16SEP2022 146713 56.0N 163.0E 4.0-5.6 BABAA Komandorsky Isl
P: 21SEP2022 146977 56.0N 166.0E 4.0-5.8 AAAAA Komandorsky Isl
The strongest earthquake in the U.S. or Canada today was an M 4.9-5.1 in the Alaska Peninsula region. It may have been lightly felt in the Chignik area or Alaska. The last earthquake with significantly larger magnitude within about 150 km of this epicenter in the Alaska Peninsula was an M 6.9 on October 11, 2021. Similar sized earthquakes around M 5.1 occurred more recently in this area on August 17, and June 2, 2022. Forecast 146969 had expected today's earthquake in this region was likely around September 21.
O: 20SEP2022 08:37:40 56.3N 156.5W Mw=5.1 EMSC ALASKA PENINSULA
P: 21SEP2022 146969 55.7N 156.9W 3.5-4.9 AAAAA Alaska Peninsula
A strong swarm of light earthquakes occurred in Hawaii today. The largest of these was an M 3.4 which was felt with intensity II-III in Hawaii at Naalehu, Captain Cook, Holualoa, Kailua Kona and Princeville. An earlier M 3.4 was felt with intensity II-III in Kailua Kona, Waikoloa, Kealakekua, Kamuela, Kapaau, Captain Cook, Paauilo, Honokaa, Pahala, Ookala. This may be part of a reenergized eruption of Kilauea. The M 3.4 occurred north and west of the island of Hawaii and may be an aftershocks of an M 3.8-4.0 of September 16, 2022. At the time this summary noted in this regard:
"An unusual M 3.4-3.8 also shook the Hawaiian Island of Maui today. The only earthquake of M>=3.4 in the Maui region in the past two years occurred as an M 3.4 on June 21, 2021 and was noted in this summary at the time as:
"An unusual M 3.4 hit the Maui region of Hawaii today. NEIC reported this earthquake of M 3.3 in Maui, Hawaii was felt with intensity II-III in the area(s) of Maui, Hawaii at Hawi, Waikoloa, Kamuela, Kailua Kona, Honokaa, Kula and Captain Cook. This is the strongest earthquake in Maui since a M 3.6-3.8 on September 5, 2020." (June 21-22, 2021)
Like today's event that of June, 2021 was accompanied by an M 6.0 in the central Kermadec Islands of New Zealand near the M 5.7 in that area today.
Forecast 146587 had expected today's event in Maui was likely within about 50 km around September 18.
NEIC reported this earthquake of M 3.8 in Maui, Hawaii was felt with intensity II-III in the area(s) of Maui, Hawaii in Lanai City, Kihei, Lahaina, Kula, Wailuku, Makawao, Kaunakakai, Kualapuu and Kamuela. This epicenter is at the seventh node (52 degrees) from the M 7.0 in the Loyalty Islands of September 14, 2022 and may have been promoted by energy from that source." (September 17, 2022)
Forecasts 146587, 146566 and 146833 had expected enhanced seismicity in Hawaii at this time within about 10-30 km of these epicenters.
O: 21SEP2022 04:25:13 19.3N 155.5W ML=3.1 EMSC ISLAND OF HAWAII, HAWAII
P: 17SEP2022 146566 19.3N 155.1W 3.0-4.4 BAAAA Hawaii
P: 24SEP2022 146833 19.3N 155.2W 3.0-4.5 BAAAA Hawaii
O: 20SEP2022 15:20:22 19.8N 156.1W ML=3.4 EMSC HAWAII REGION, HAWAII
P: 18SEP2022 146587 20.1N 156.1W 4.0-5.4 AAAAA Hawaii area
Moderate to strong aftershocks continued today in the region of Colima, Jalisco and Michoacan, Mexico following the M 7.6 in Michoacan on September 19, 2022. These were felt widely with moderate intensity in Manzanillo, Colima, Paracho, Michoacan, in Jalisco in Guadalajara, Zapopan, and in the area of Mexico City and Tlalnepantla. The strongest aftershock in the area today was an M 5.8-5.9. It was reported by NEIC to have been felt with intensity IV in Pihuamo, Jalisco and Manzaniloo and Colima, Colima and III in Villa de Alvarez, Colima and in Comala, Colima and in Jalisco at San Patricio, El Grullo and El Limon. Forecasts 146840 and 146830 had expected this activity around September 20.
O: 20SEP2022 16:03:12 18.1N 103.2W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 04:02:27 18.1N 103.1W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 05:59:35 18.1N 103.5W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 04:44:34 18.2N 103.2W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 10:43:18 18.3N 102.9W Mw=4.7 EMSC MICHOACAN, MEXICO
O: 21SEP2022 00:06:04 18.3N 103.5W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 11:51:41 18.4N 103.8W ML=4.3 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 19:04:29 18.4N 103.1W mb=4.9 EMSC MICHOACAN, MEXICO
O: 20SEP2022 23:18:33 18.4N 104.3W ML=4.1 EMSC OFFSHORE COLIMA, MEXICO
O: 20SEP2022 08:17:18 18.6N 103.5W Mw=5.9 EMSC MICHOACAN, MEXICO
O: 21SEP2022 06:19:15 18.6N 103.6W ML=4.0 EMSC MICHOACAN, MEXICO
O: 20SEP2022 14:26:26 18.0N 103.4W ML=4.4 EMSC OFFSHORE MICHOACAN, MEXICO
P: 21SEP2022 146840 17.0N 101.0W 3.5-5.4 ABBAA Michoacan, Mexico
P: 23SEP2022 146830 18.0N 104.0W 3.5-6.4 AAAAA Coast of Jalisco, Mexico
The strongest earthquake in the U.S. today outside Alaska was an M 3.6-4.0 in Northern California. NEIC reported this earthquake of M 4.0 in Northern California was felt with intensity II-III in the area(s) of Northern California in Covelo, Willits, Fort Bragg. Several light aftershocks were also felt in the epicentral area. This is the strongest earthquake within about 50 km of this epicenter in Northern California since an M 4.1 on November 4, 2021 and an M 4.3 occurred on December 14, 2017. The last of significantly larger magnitude in this area was an M 4.9 on January 19, 2008. A series of light aftershocks followed the M 4.0. Forecasts 146610 and 146884 had expected today's activity within this area was likely around September 19-21.
O: 20SEP2022 14:08:26 39.8N 123.2W Md=2.1 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 14:12:13 39.8N 123.2W ML=2.4 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 14:31:31 39.8N 123.2W Md=2.1 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 15:01:45 39.8N 123.2W Md=2.1 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 16:42:13 39.8N 123.2W Md=2.1 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 14:03:07 39.8N 123.2W ML=3.6 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 14:03:07 39.8N 123.2W ML=4.0 ANSS NORTHERN CALIFORNIA
P: 19SEP2022 146610 39.2N 123.1W 2.5-4.8 AAAAA Central California
P: 21SEP2022 146884 39.0N 123.1W 2.5-4.8 AAAAA Central California
Unusual activity in the area of Northern New Zealand near Taupo and in Tonga near the site of the massive volcanic eruption there earlier this year suggest areas to be watched for further geological significance may occur in the future.
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 20SEP2022 17:30:41 23.1N 121.2E ML=4.0 EMSC TAIWAN
O: 21SEP2022 01:13:44 23.1N 121.2E mb=4.6 EMSC TAIWAN
O: 21SEP2022 01:13:44 23.1N 121.2E ML=4.7 TAI Hualien, Taiwan
O: 20SEP2022 18:42:03 22.9N 121.1E ML=4.3 EMSC TAIWAN REGION
P: 20SEP2022 146597 23.0N 121.0E 4.0-5.5 AAAAA Taiwan
This earthquake was reported felt in Taiwan by CWB with intensity III in Kaohsiung, Taitung, II in Hualien, Chiayi and I in Nantou, Taichung, Yunlin,Tainan and Pingtung.
O: 20SEP2022 10:23:28 31.6N 98.2E mb=4.1 EMSC XIZANG-SICHUAN BORDER REGION
P: 15SEP2022 146658 33.0N 92.0E 3.8-5.3 BBCAA Xizang
O: 20SEP2022 14:08:49 32.7N 81.7E ML=3.9 EMSC WESTERN XIZANG
P: 25SEP2022 146928 30.0N 82.0E 3.8-5.6 BCAAA Xizang
O: 20SEP2022 12:57:21 38.0N 72.4E mb=4.4 EMSC TAJIKISTAN
P: 19SEP2022 146616 38.0N 74.0E 3.8-5.4 AABAA Hindu Kush/Pakistan
O: 20SEP2022 09:53:52 43.2N 78.7E mb=4.1 EMSC EASTERN KAZAKHSTAN
P: 10SEP2022 146415 40.0N 78.0E 4.0-5.4 CCAAA Kirgizstan/Xinjiang
P: 21SEP2022 146937 40.0N 77.0E 4.0-5.5 ACBAA Kirgizstan/Xinjiang
O: 20SEP2022 21:44:41 51.2N 157.8E mb=4.5 EMSC NEAR EAST COAST OF KAMCHATKA
P: 24SEP2022 146976 51.0N 157.0E 4.0-5.7 BAAAA Kamchatka
O: 20SEP2022 22:49:58 53.8N 109.8E mb=4.2 EMSC LAKE BAYKAL REGION, RUSSIA
P: 20SEP2022 146723 56.0N 110.0E 3.0-4.6 ACAAA So. Siberia
O: 20SEP2022 18:23:43 55.5N 166.4E Mw=6.0 EMSC KOMANDORSKIYE OSTROVA REGION
O: 20SEP2022 18:56:18 55.6N 166.0E mb=4.2 EMSC KOMANDORSKIYE OSTROVA REGION
O: 20SEP2022 18:22:33 55.5N 166.3E mb=4.5 EMSC KOMANDORSKIYE OSTROVA REGION
P: 16SEP2022 146713 56.0N 163.0E 4.0-5.6 BABAA Komandorsky Isl
P: 21SEP2022 146977 56.0N 166.0E 4.0-5.8 AAAAA Komandorsky Isl
INDONESIA AND PHILIPPINES
O: 20SEP2022 07:04:46 0.2N 130.0E ML=4.6 EMSC PAPUA REGION, INDONESIA
O: 20SEP2022 09:17:35 0.0N 129.9E ML=4.0 EMSC HALMAHERA, INDONESIA
P: 17SEP2022 146531 1.0N 128.0E 4.0-5.5 BABAA Halmahera
O: 20SEP2022 22:25:01 1.2S 98.6E mb=5.0 EMSC KEP. MENTAWAI REGION, INDONESI
P: 18SEP2022 146552 2.0S 100.0E 4.0-5.4 AABAA So. of Sumatera
O: 20SEP2022 19:09:33 2.7S 126.8E ML=4.1 EMSC CERAM SEA, INDONESIA
O: 20SEP2022 16:18:05 2.7S 126.9E ML=4.1 EMSC CERAM SEA, INDONESIA
O: 21SEP2022 00:50:14 2.7S 126.8E ML=4.0 EMSC CERAM SEA, INDONESIA
P: 17SEP2022 146539 3.0S 128.0E 4.0-5.4 BAAAA Ceram area
O: 21SEP2022 06:50:26 3.6N 125.9E ML=4.1 EMSC KEPULAUAN SANGIHE, INDONESIA
P: 23SEP2022 146800 4.0N 126.0E 4.0-5.4 AAAAA Mindanao, Philippines
O: 20SEP2022 15:42:07 13.8N 145.0E mb=4.9 EMSC GUAM REGION
P: 18SEP2022 146582 13.0N 145.0E 4.0-5.4 AAAAA So. Marianas/Guam
NEIC reported this earthquake of M 4.9 in Guam was felt with intensity II-III in the area(s) of Guam in Mangilao (V), Santa Rita, Umatac (IV) and II-III in Yigo, Dededo, Barrigada, Mongmong, Rota, Guam.
CENTRAL AND SOUTH AMERICA
O: 20SEP2022 21:30:29 15.8N 95.5W ML=4.0 EMSC OFFSHORE OAXACA, MEXICO
O: 21SEP2022 03:37:03 16.9N 95.6W ML=4.0 EMSC OAXACA, MEXICO
O: 20SEP2022 14:00:41 15.0N 94.5W ML=4.2 EMSC OFF COAST OF CHIAPAS, MEXICO
P: 21SEP2022 146848 16.0N 95.0W 3.5-5.3 AAAAA Oaxaca, Mexico
O: 21SEP2022 01:21:02 17.9N 67.0W ML=3.2 EMSC PUERTO RICO REGION
P: 19SEP2022 146579 18.0N 66.0W 3.4-5.1 AAAAA Puerto Rico
O: 20SEP2022 18:40:19 17.9N 93.3W ML=4.3 EMSC TABASCO, MEXICO
P: 15SEP2022 146560 16.0N 93.0W 3.5-5.1 BBAAA Chiapas, Mexico
O: 21SEP2022 02:58:16 17.9N 97.9W ML=4.1 EMSC OAXACA, MEXICO
P: 19SEP2022 146578 18.0N 99.0W 3.5-5.4 AAAAA Oaxaca, Mexico
O: 20SEP2022 19:58:59 19.0N 65.0W ML=3.0 EMSC VIRGIN ISLANDS REGION
O: 20SEP2022 20:00:00 18.9N 65.0W ML=3.3 EMSC VIRGIN ISLANDS REGION
P: 18SEP2022 146568 19.0N 64.0W 3.0-5.4 AAAAA Leeward Islands
O: 21SEP2022 02:34:10 23.6S 69.1W mb=4.3 EMSC ANTOFAGASTA, CHILE
P: 26SEP2022 147024 23.0S 69.0W 4.0-5.6 BAAAA Coast No. Chile
O: 20SEP2022 10:01:22 22.4S 67.6W mb=4.5 EMSC POTOSI, BOLIVIA
O: 20SEP2022 13:06:10 24.1S 67.5W ML=4.0 EMSC SALTA, ARGENTINA
P: 14SEP2022 146757 24.0S 68.0W 4.0-5.7 CAAAA Argentina
O: 20SEP2022 16:03:12 18.1N 103.2W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 04:02:27 18.1N 103.1W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 05:59:35 18.1N 103.5W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 21SEP2022 04:44:34 18.2N 103.2W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 10:43:18 18.3N 102.9W Mw=4.7 EMSC MICHOACAN, MEXICO
O: 21SEP2022 00:06:04 18.3N 103.5W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 11:51:41 18.4N 103.8W ML=4.3 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 19:04:29 18.4N 103.1W mb=4.9 EMSC MICHOACAN, MEXICO
O: 20SEP2022 23:18:33 18.4N 104.3W ML=4.1 EMSC OFFSHORE COLIMA, MEXICO
O: 20SEP2022 08:17:18 18.6N 103.5W Mw=5.9 EMSC MICHOACAN, MEXICO
O: 21SEP2022 06:19:15 18.6N 103.6W ML=4.0 EMSC MICHOACAN, MEXICO
O: 20SEP2022 14:26:26 18.0N 103.4W ML=4.4 EMSC OFFSHORE MICHOACAN, MEXICO
P: 21SEP2022 146840 17.0N 101.0W 3.5-5.4 ABBAA Michoacan, Mexico
P: 23SEP2022 146830 18.0N 104.0W 3.5-6.4 AAAAA Coast of Jalisco, Mexico
AFRICA AND EUROPE
O: 20SEP2022 09:04:54 66.5N 17.5W ML=3.0 EMSC ICELAND REGION
P: 24SEP2022 146993 66.0N 17.0W 3.0-4.7 BAAAA Iceland area
O: 20SEP2022 08:35:44 70.6N 8.8E Mw=3.2 EMSC NORWEGIAN SEA
P: 28SEP2022 147002 74.0N 14.0E 3.0-4.6 CCAAA Norway
SOUTHWEST PACIFIC
O: 20SEP2022 09:26:38 18.4S 177.9W mb=4.3 EMSC FIJI REGION
P: 23SEP2022 147017 17.0S 179.0W 4.0-5.8 BBAAA Tonga Islands
No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.
OCEAN RIDGES
O: 21SEP2022 03:01:10 33.3S 78.2E mb=4.7 EMSC MID-INDIAN RIDGE
O: 21SEP2022 02:50:14 33.2S 78.0E mb=4.9 EMSC MID-INDIAN RIDGE
P: 22SEP2022 147038 37.0S 79.0E 4.0-5.6 ACAAA So. Indian Ocean
O: 20SEP2022 18:49:18 55.8S 27.4W mb=5.1 EMSC SOUTH SANDWICH ISLANDS REGION
P: 18SEP2022 146790 58.0S 26.0W 4.0-6.1 ACAAA So. Sandwich Islands
ZEALANDIA AND AUSTRALIA REGION
O: 20SEP2022 17:10:52 27.9S 178.9W mb=4.5 EMSC KERMADEC ISLANDS REGION
P: 20SEP2022 146770 27.0S 177.0W 4.0-5.4 AABAA Tonga Islands
O: 20SEP2022 07:05:56 33.4S 179.5W mb=4.9 EMSC SOUTH OF KERMADEC ISLANDS
O: 20SEP2022 17:33:40 34.8S 179.0W mb=4.6 EMSC SOUTH OF KERMADEC ISLANDS
P: 25SEP2022 147039 34.0S 180.0W 4.0-5.9 BAAAA So. Kermadec Islands
O: 20SEP2022 07:49:31 33.4S 117.0E ML=2.3 EMSC WESTERN AUSTRALIA
P: 29SEP2022 147032 30.0S 117.0E 2.0-3.5 CCAAA Central Australia
JAPAN AND KURIL ISLANDS
No earthquakes of M>=4 were located in Japan or the Kuril Islands today.
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 20SEP2022 20:15:15 33.2N 115.6W ML=2.0 EMSC SOUTHERN CALIFORNIA
O: 20SEP2022 22:40:47 33.2N 115.6W Ml=2.1 EMSC SOUTHERN CALIFORNIA
O: 20SEP2022 18:38:33 33.4N 115.8W ML=2.7 EMSC SOUTHERN CALIFORNIA
O: 20SEP2022 20:09:46 33.2N 115.6W Ml=2.1 EMSC SOUTHERN CALIFORNIA
O: 20SEP2022 18:34:41 33.4N 115.8W ML=3.4 EMSC SOUTHERN CALIFORNIA
P: 21SEP2022 146910 33.4N 116.7W 2.5-4.6 AAAAA So. California
NEIC reported this earthquake of M 2.7 in Southern California was felt with intensity II-III in the area(s) of Southern California in Thermal and Palm Springs.
O: 20SEP2022 09:21:56 35.7N 117.5W ML=2.7 EMSC SOUTHERN CALIFORNIA
P: 19SEP2022 146647 35.8N 117.6W 2.5-4.6 AAAAA So. California
O: 21SEP2022 04:54:30 35.8N 121.3W Md=2.0 EMSC CENTRAL CALIFORNIA
P: 23SEP2022 146904 35.7N 121.2W 2.5-4.6 AAAAA Off So. California
O: 20SEP2022 07:27:32 36.5N 121.1W Md=2.3 EMSC CENTRAL CALIFORNIA
P: 24SEP2022 146880 36.2N 120.8W 2.5-4.6 BAAAA Central California
O: 20SEP2022 16:18:01 36.9N 121.4W Md=2.3 EMSC CENTRAL CALIFORNIA
P: 24SEP2022 146881 36.7N 121.4W 2.5-4.8 BAAAA Central California
O: 20SEP2022 12:24:58 37.6N 119.4W Md=2.1 EMSC CENTRAL CALIFORNIA
P: 19SEP2022 146605 38.8N 119.6W 2.5-4.8 ABAAA California/Nevada area
O: 20SEP2022 11:41:03 38.2N 117.8W ml=2.0 EMSC NEVADA
P: 26SEP2022 146876 37.8N 118.4W 2.5-4.4 CAAAA California/Nevada area
O: 21SEP2022 02:43:04 40.3N 124.8W ML=3.4 EMSC OFFSHORE NORTHERN CALIFORNIA
O: 21SEP2022 02:43:04 40.3N 124.8W ML=3.7 ANSS OFFSHORE NORTHERN CALIFORNIA
P: 21SEP2022 146950 40.2N 124.2W 2.5-4.8 AAAAA Off Coast of No. Calif
NEIC reported this earthquake of M 3.7 off the coast of Northern California was felt with intensity II-III in the area(s) of Northern California in Petrolia, Ferndale, Fortuna, Redcrest, Carlotta, Garberville, Eureka and Gualala.
O: 20SEP2022 20:31:40 40.4N 121.3W Md=2.1 EMSC NORTHERN CALIFORNIA
P: 29SEP2022 146949 40.2N 121.2W 2.5-4.7 CAAAA Northern California
O: 20SEP2022 20:35:25 40.6N 123.9W Md=2.0 EMSC NORTHERN CALIFORNIA
P: 17SEP2022 146686 40.6N 124.9W 2.5-4.6 BAAAA Off Coast of No. Calif
P: 21SEP2022 146950 40.2N 124.2W 2.5-4.8 AAAAA Off Coast of No. Calif
O: 20SEP2022 14:08:26 39.8N 123.2W Md=2.1 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 14:12:13 39.8N 123.2W ML=2.4 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 14:12:13 39.8N 123.2W ML=2.4 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 14:31:31 39.8N 123.2W Md=2.1 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 15:01:45 39.8N 123.2W Md=2.1 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 16:42:13 39.8N 123.2W Md=2.1 EMSC NORTHERN CALIFORNIA
O: 20SEP2022 14:03:07 39.8N 123.2W ML=3.6 EMSC NORTHERN CALIFORNIA
P: 19SEP2022 146610 39.2N 123.1W 2.5-4.8 AAAAA Central California
P: 21SEP2022 146884 39.0N 123.1W 2.5-4.8 AAAAA Central California
ALASKA
O: 20SEP2022 08:37:40 56.3N 156.5W Mw=5.1 EMSC ALASKA PENINSULA
P: 21SEP2022 146969 55.7N 156.9W 3.5-4.9 AAAAA Alaska Peninsula
O: 21SEP2022 02:17:39 58.5N 142.8W ML=3.2 EMSC GULF OF ALASKA
P: 18SEP2022 146731 60.3N 143.1W 3.2-5.0 BBAAA Central Alaska
O: 21SEP2022 04:02:29 63.0N 150.8W Mw=4.1 EMSC CENTRAL ALASKA
P: 17SEP2022 146732 62.8N 151.2W 3.2-5.1 BAAAA Central Alaska
PACIFIC NORTHWESTERN U.S./WESTERN CANADA
O: 20SEP2022 08:36:46 49.7N 127.4W ML=2.9 EMSC VANCOUVER ISLAND, CANADA REGIO
P: 12SEP2022 146700 49.5N 127.2W 2.8-5.4 CAAAA Vancouver Island area
O: 20SEP2022 03:08:39 49.4N 127.7W MB=4.1 ECAN of Port Alice, BC
P: 12SEP2022 146700 49.5N 127.2W 2.8-5.4 CAAAA Vancouver Island area
ROCKY MOUNTAINS REGION
O: 20SEP2022 23:41:32 32.0N 103.8W ML=2.3 EMSC NEW MEXICO
P: 17SEP2022 146639 31.6N 103.6W 2.0-4.1 BAAAA SW U.S.A
O: 20SEP2022 21:14:58 40.7N 112.1W Ml=2.7 EMSC WASATCH FRONT URBAN AREA, UTAH
P: 19SEP2022 146655 39.8N 112.7W 2.0-3.9 AAAAA Utah area
O: 20SEP2022 08:40:45 44.7N 110.8W Ml=2.4 EMSC YELLOWSTONE NAT. PARK, WYOMING
O: 20SEP2022 08:50:32 44.8N 110.8W Ml=2.1 EMSC YELLOWSTONE NAT. PARK, WYOMING
P: 20SEP2022 146703 44.2N 110.3W 2.0-4.2 AAAAA Yellowstone/Wyoming
P: 22SEP2022 146967 44.6N 110.8W 2.0-3.9 AAAAA Yellowstone/Wyoming
EASTERN U.S./CANADA
O: 20SEP2022 18:33:11 34.5N 97.3W ML=2.0 EMSC OKLAHOMA
P: 21SEP2022 146921 35.0N 97.0W 2.0-4.1 AAAAA Southern Plains
O: 21SEP2022 02:16:46 35.3N 84.4W mb=2.3 EMSC EASTERN TENNESSEE
P: 19SEP2022 146618 35.0N 84.0W 2.0-4.1 AAAAA Kentucky/Tennessee/NC
NEIC reported this earthquake of M 2.5 in Eastern Tennessee was felt with intensity II-III in the area(s) of Eastern Tennessee in Tellico Plains, Etowah, Knoxville, Johnson City and in Kennesaw, Georgia, possibly in northern Virginia.
O: 20SEP2022 18:06:00 45.5N 63.7W MB=2.0 ECAN of Masstown, NS
P: 18SEP2022 146665 46.0N 66.0W 2.0-3.9 AABAA E. of Maine
O: 18SEP2022 01:23:32 47.4N 70.2W MB=1.2 ECAN of La Pocatière, QC
O: 17SEP2022 19:24:45 47.6N 69.9W MB=1.9 ECAN of Saint-Pascal, QC
O: 20SEP2022 05:01:47 47.5N 70.1W MB=1.0 ECAN of La Malbaie, QC
P: 19SEP2022 146673 47.0N 69.0W 2.0-4.1 AAAAA Maine
O: 18SEP2022 21:23:38 46.8N 80.3W MB=1.7 ECAN of Bear Island, ON
P: 20SEP2022 146689 46.0N 81.0W 2.0-4.3 AAAAA Ohio/Lake Erie
O: 17SEP2022 08:03:41 49.7N 66.9W MB=1.4 ECAN of Port-Cartier, QC
P: 22SEP2022 146933 49.0N 66.0W 2.0-3.9 BAAAA E. of Maine
O: 17SEP2022 07:45:49 43.3N 73.7W MB=2.3 ECAN of Saratoga Springs, NY
P: 18SEP2022 146682 45.0N 74.0W 2.0-4.3 ABAAA New York State
HAWAII
O: 20SEP2022 17:09:35 19.2N 155.4W ML=2.9 EMSC ISLAND OF HAWAII, HAWAII
O: 21SEP2022 04:01:59 19.3N 155.4W ML=3.5 EMSC ISLAND OF HAWAII, HAWAII
MAJOR EARTHQUAKE DAMAGING, DEADLY IN MICHOACAN, COLIMA, MEXICO
EARTHQUAKE SUMMARY FOR SEPTEMBER 19, 2022
The strongest earthquake in the world today was a major event of M 7.6 in Michoacan, Mexico. Several triggers acting together probably helped enhance this earthquake. These included triggering effects from Tropical Storms, Geomagnetic storms, and other earthquakes. This follows a similar M 7.6 in Papua New Guinea on September 10, 2022, the strongest in the world more than a year as noted in this summary at the time:
“A major earthquake of M 7.6-7.7 struck Papua New Guinea today … This earthquake is the strongest earthquake in the earth in more than a year. The last event of M>=7.6 occurred in the South Sandwich Islands on August 12, 2021 with M 8.1 and prior to that in the Alaska Peninsula on July 29, 2021." (September 11, 2022)
NEIC reported the earthquake in Michoacan, Mexico was felt with strong intensity IX in Michoacan at Coshuayana and VUU in Coalcoman. It was also felt with intensity VI in Colima at Colima, Cuauhtemoc, Villa de Alvarez, Colima, Suchitlan, and in Tecalitalan and Pihuamo, Jalisco, Mexico. Foreshocks hit within about 150 km of this epicenter with M 6.1 of September 2, 2022 and M 5.9 on August 13, 2022. A national earthquake drill commemorating the M 8.1 on September 19, 1985 occurred about an hour before this earthquake. It is possible that this drill helped save many from death or injury from today's earthquake as they were outdoors and aware of the possibility of a quake at that time. A tsunami warning was issued and later revise. Fluctuation of ocean up to about a foot (0.3 meters) were reported. Gauges in Mexico registered maximum tsunami height of 0.8 m in Manzanillo, 0.5 m in Zihuatanejo and 0.1 in Acapulco. Tsunami waves of 0.12 meters (0.4 feet) were also reported in the Galapagos Islands with similar waves in Lazaro Cardenas, Mexico, Zihuatanejo and Puerto Vallarta, Mexico by PTWC. At least one person was killed when a facade of a department store fell on a man in Manzanillo. A second was killed when falling portions of a Mall hit him. At least 7 were injured but the toll continues to rise as rescue workers begin their work. At least 20 hospitals in Michoacan were damaged. Damage was also reported to hotels, medical facilities, churches and colleges in Coalcoman. More than a million people lost power in the quake. Earthquakes within about 300 km of today's epicenter of M>=7.2 hit this area on April 18, 2014 (M 7.2), January 22, 2004 (M 7.5), January 11, 1997 (M 7.2).
The only earthquake of larger magnitude in this area in the past 30 years was an M 8.0 on October 8, 1995. An M 8.1 also occurred in this region of Michoacan exactly 37 years ago - on September 19, 1985. This was widely damaging with more than 35,000 acknowledged deaths especially in the region of Mexico City. It may be the most deadly earthquake recorded in the region of North and Central America since records began. Another deadly earthquake hit this area on September 19, 2017. That event of M 7.1 also caused much damage and deaths in the area. At the time this summary noted regarding this event exactly five years ago as:
"A major earthquake of M 7.1 hit the Mexican State of Puebla today, apparently dropping the other shoe anticipated in this summary of September 12. This deadly earthquake was widely felt in the area of Mexico City and surroundings where it was deadly and caused buildings to collapse. A state of disaster has been declared for Mexico City. … More than 250 were confirmed dead in this earthquake which hit about 120 km south of Mexico City near local solar noon. The devastated remains of schools, apartment buildings, homes and businesses throughout the area were being searched for survivors. The quake occurred hours after an earthquake drill commemorating the 32nd anniversary of Mexico's deadiest quake - an M 8.1 on September 19, 1985 which killed more than 35,000. Today's quake while not as large or deadly occurred much closer to Mexico City. Confirmed deaths per state included: Morelos 72; Puebla 43; Mexico City 117; Mexico State 12; Guerrero 3 and Oaxaca 1. Thousands were injured and many children were missing in collapsed schools. The timing of the quake near noon was particularly bad for school children most of whom were in school at the time. At least 44 high rise buildings in Mexico City collapsed or were severely damaged in the quake. Because Mexico City is built on filled soil in an old swamp shaking is amplified and often leads to higher destructive power of large earthquakes. Tolls in all categories of death and destruction will rise in coming days. It is the worst quake in Mexico City since September 1985. A second quake on September 21, 1985 of M 7.1 contributed to the damage and deaths in that catastrophe." (September 19-20, 2017)
A published statistical study of earthquakes reported a 1 in 133,000 likelihood That three major earthquakes in this region of Mexico in the past 100 years would occur on the same day of the year.
Areas likely to see far-field seismic enhancement from this earthquake include:
Antipodal (~180 degrees): South Indian Ocean
Outer shadow zone edge (141-148 degrees): Mexico to Minahassa, Sea of Bengal, Australia, SE Indian Ridge, Java, Andaman Islands,
Node 3 (120 degrees): Mexico to Bismarck Sea, New Guinea, Taiwan, Northern Philippines, Sumbawa, Tajikistan,
P- and S- shadow zone edge and node 7 (101-110 degrees): Mexico to Greece. Turkey, Vanuatu, Hokkaido, Southern Mid-Atlantic, Lake Baykal, Mariana Islands, South Island, New Zealand, Volcano Islands, Greece, SE Honshu, Japan, Bonin Islands, Central Japan, New Guinea,
Node 4 (90 degrees): Mexico to Algeria, Germany, Kermadec Islands, Fiji Islands
Node 5 (72 degrees): Mexico to Jan Mayen, Rat Islands,
Node 6 (60 degrees): Mexico to Northern Alaska, Easter Island, Hawaii, Nunavit, Canada,
Node 7 (52 degrees): Mexico to NWT, Yukon, Canada, SE Alaska, Hawaii, Bolivia, NT, Canada, Central Chile,
The Michoacan mainshock occurred within minutes of local solar noon, a time when strong tidal stresses help promote seismicity. It also occurred near the antipode of several moderately large earthquakes in the Mid-Indian Ocean and may have been promoted by surface energy from that event and at the third node (120 degrees) from Taiwan of September 17, 2022 (M 6.9). It also occurred at the peak of a moderate geomagnetic storm with KP 5.
In addition to stresses associated with local tropical storms, the M 7.6 in Michoacan, Mexico today was located at 103 degrees from the location of the landfall today of Typhoon Nanmadol in Central Honshu, Japan. Surface energy from major disturbances concentrate at this distance from those sources and can help trigger seismicity at this distance. Nanmadol did extensive damage in Japan on landfall today.
"Typhoon Nanmadol (TD 16W) continued today over central Honshu, Japan with winds up to 65 kts. It is expected to track to the northeast over the next several days. A moderate to strong earthquake is possible as this storm passes through southern and central Japan. This is most likely around September 20-21 in Honshu, Japan." (September 18-19, 2022)
Today's seismicity in Michoacan, Mexico had been expected and outlined in the previous issue of this summary as:
Another area where seismicity is likely to be impacted by a tropical storm in the next several days is central and western coastal Mexico where two tropical storms are near or at landfall at this time. Tropical Storm Lester dissipated over the region of Guerrero and Michoacan Mexico today. This is the first storm of the season to make landfall in Mexico. First landfalls often trigger unusually large earthquakes in seismically active areas such as Michoacan. Twenty-seven years ago today, this area suffered from one of the strongest great earthquakes in region of Central and North America occurred as noted in the earthquake summary yesterday:
" 9 19 13 17 47 1985 18.190 -102.533 28 8.1 Michoacan, Mexico
The Mexico City earthquake killed up to 35,000, injured more than 30,000 and left nearly 100,000 homeless. Severe damage with intensity up to IX - X in Mexico City and the surrounding area of about 1 million square km. Damage up to $5 billion U.S. Dollars. 412 building collapsed in Mexico City and more than 3000 additional structures were damaged. Felt from Houston, Texas to Guatemala City, Guatemala. Landslides, sandblows and ground cracks were common as far away as Colima. A tsunami up to 3 meters high caused damage at Lazaro and Manzanillo. Seiche was observed in Texas, Mexico, Florida and as far away as Maryland and Idaho. Resonance effects were observed in damage to high rise buildings in Mexico City. Some of these swayed so much at the top that they hit each other causing extensive damage. This may be the most deadly earthquake recorded in North or Central America in recorded history." (September 19, 2022)
In the summary of September 18-19 and in previous issues this summary noted the potential of this storm on regional seismicity as:
"TS Lester formed today South of Oaxaca, Nexico with winds up to 45 kts. It is expected to track to the northwest over the next several days reaching Guerrero and Michoacan, Mexico around September 18-20. It may provoke a moderate earthquake in that region on or shortly after landfall." (
"A second storm - Madeline is currently located south of Michoacan and Colima States in Mexico. While this storm is not expected to make landfall, the location near the landfall of Lester may enhance the possibility of related seismicity in the area in the next several days. Madeline was address in this and the previous issue of this summary as:
"TS MADELINE 2022-09-20 00:00 UT 17.3N 106.6W 050 kts South of Colima, Mexico
TS Madeline formed today South of Colima, Nexico with winds up to 50 kts. It is expected to track to the west and not to make landfall in Mexico. No major seismic enhancement in Mexico is expected with this storm." (September 19, 2022)
Moderate earthquakes of M 4.1 and M 3.4 today indicate areas where seismicity may be increasing with these tropical Storms. They had been expected to occur in mid-September in forecasts 146571, 146577 and 146578. This region is at the third node from the Taiwan earthquakes of September 18 of M 6.5 and 6.9 and from the M 7.0 in Luzon, Philippines of July 27, 2022 and may have been promoted by energy from those sources." (September 18-19, 2022)
Forecasts 146571 and 146570 had expected today's activity within about 150 km of this epicenter was likely in mid-September. This activity in Michoacan is located at 120.0 degrees (3rd node) from the M 6.9 in Taiwan of September 18 and was probably promoted by energy from that source. A smaller swarm in Chiapas Mexico today was also located at this distance from the M 7.6 in New Guinea of September 10, 2022.
O: 19SEP2022 23:00:06 18.0N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 02:16:13 18.0N 103.3W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 02:23:41 18.0N 103.2W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 04:39:04 18.0N 103.4W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 19SEP2022 22:57:06 18.1N 103.3W ML=4.2 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 00:09:03 18.2N 103.0W ML=4.1 EMSC MICHOACAN, MEXICO
O: 20SEP2022 06:19:04 18.3N 103.3W mb=4.5 EMSC MICHOACAN, MEXICO
O: 19SEP2022 18:05:08 18.4N 103.3W Mw=7.6 EMSC MICHOACAN, MEXICO
O: 19SEP2022 19:30:41 18.5N 103.8W mb=5.3 EMSC OFFSHORE MICHOACAN, MEXICO
P: 13SEP2022 146571 19.0N 105.0W 3.5-5.3 CAAAA Michoacan, Mexico
P: 19SEP2022 146570 19.0N 101.0W 3.5-5.5 AABAA Michoacan, Mexico
Strong weather systems were also reported at the times of the events of September 19, 1917 and September 19, 1985 and may have helped promote those disastrous events. The system of September, 1985 for example, was subject to an internal report of the Nebraska Conservation Survey when oil and gas production ceased several days before that event and resumed after it at higher levels than before as a strong weather front passed through both regions. Relations to the earthquake of that date were analyzed in the report.
The strongest earthquake in the U.S. or Canada today was an M 4.4 in Arizona. NEIC reported it was felt with intensity II-III in Arizona at Littlefield, Colorado City, in Utah at Saint George, Santa Clara, Washington, Ivins, Dammeron and Hurricane and in Mesquite, Nevada. The relation between earthquakes in this area of Arizona and earthquakes in Central America was examined in previous issues of this summary as one of the largest earthquakes in this area of Arizona occurred on February 4, 1976, the same day as the Guatemala City earthquake of M 7.5 which also killed tens of thousands. It was argued that these two regions may have a connection.
2 4 0 4 58 1976 34.655 -112.500 12 5.2 SW U.S.A
2 4 9 1 43 1976 15.324 -89.101 5 7.5 Guatemala
Similarly, one of the strongest earthquakes in Arizona in recent years occurred on September 2, 1992 hours after an M 7.4 in Nicaragua. This event was within about 50 km of today's event in Nicaragua. Date for these two events follows:
9 2 0 16 2 1992 11.742 -87.340 45 7.4 Nicaragua
9 2 10 26 21 1992 37.090 -113.472 15 5.9 Utah area
An M 4.5 north of this in Utah also followed an M 7.1 in Chile 7 hours earlier with the following parameters:
1 3 12 6 36 2011 38.246 -112.340 5 4.7 Utah region
1 2 20 20 18 2011 38.400 -73.200 15 7.1 Chile
This earthquake of M 4.4 in Arizona is the strongest within about 100 km of this epicenter since the M 5.5-5.9 on September 2, 1992 (see above).
This event is located at 102 degrees from Taiwan and may have been promoted by the M 6.9 there of September 18. It is also near the antipode of the M 5.8 in the South Indian Ocean which occurred several hours earlier.
O: 19SEP2022 21:18:15 36.6N 113.4W mb=4.4 EMSC ARIZONA
P: 19SEP2022 146604 37.8N 115.8W 2.5-4.6 ABBAA California/Nevada area
The moderate earthquake in Yellowstone National Park, Wyoming yesterday was followed by lightly felt events of M 2.3 and 2.9 today. Yesterday's summary had noted the Yellowstone events as:
"An unusually large M 3.9 was widely felt in the Yellowstone National Park area of Montana and Wyoming. NEIC reported it was felt with intensity IV in Yellowstone National Park and II-III in West Yellowstone and II in Gardiner, Montana. Lesser shaking was reported from Billings, Montana and Buffalo, Wyoming and Sandy, Utah. Forecast 146703 had expected this event between September 14 and 20 was likely within about 25 km of this epicenter. This is the strongest earthquake in Yellowstone National Park, Wyoming since an M 4.4 on June 16, 2017 more than five years ago and before that an M 4.8 on March 30, 2014. This activity is at 103 degrees from the M 7.6 in New Guinea of September 10, 2022 and 101-103 degrees from the M 7.0 in Luzon of July 27, 2022 and may have been promoted by energy from those sources." (September 19, 2022)
O: 19SEP2022 23:39:54 44.8N 110.8W ML=2.3 EMSC YELLOWSTONE NAT. PARK, WYOMING
O: 20SEP2022 06:42:10 44.8N 110.8W Ml=2.9 EMSC YELLOWSTONE NAT. PARK, WYOMING
P: 14SEP2022 146703 44.6N 110.8W 2.0-4.1 BAAAA Yellowstone/Wyoming
P: 20SEP2022 146703 44.2N 110.3W 2.0-4.2 AAAAA Yellowstone/Wyoming
The second strongest earthquake in the world today was an M 5.8 in the mid-Indian Ridge of the South Indian Ocean. It was followed by an M 5.6 minutes before the M 7.6 in Michoacan, Mexico near the antipode of that event and may have helped trigger that event by seismic waves. This activity occurred near local solar midnight and may have been promoted by strong tidal stresses which maximize near this hour. Forecast 146781 had expected this earthquake within about 50 km was likely around September 14, 2022. This epicenter is at the fifth node (72 degrees) from the M 6.9 in Taiwan of September 18 and was probably promoted by energy from that source.
O: 19SEP2022 17:53:46 36.9S 78.6E Mw=5.6 EMSC MID-INDIAN RIDGE
O: 19SEP2022 16:42:58 37.0S 78.4E Mw=5.8 EMSC MID-INDIAN RIDGE
P: 14SEP2022 146781 37.0S 79.0E 4.0-5.6 BAAAA So. Indian Ocean
An earthquake of M 4.5 also occurred off the coast of Portugal today. This is the strongest earthquake in this area within about 200 km since an M 4.7 on August 11, 2016 and an M 4.5 on June 5, 2012. The last event of significantly larger magnitude in this area was an M 5.6 on December 17, 2009. This summary reported on this event at the time as:
"Spanish media reported the quake was also felt in Seville, Cordoba and Huelva, Spain. The epicenter is located near the presumed epicenter of the great Lisbon earthquake of November 1, 1755 which destroyed along with a tsunami much of the built coast of Portugal. The only earthquake in the past 20 years of similar or larger magnitude in this region occurred on February 12, 2007 with M 5.9 about 100 km to the southwest of today's epicenter." (December 17, 2017)
Forecast 146622 had expected this event was likely within about 100 km around September 16, 2022. This earthquake is located at 144 degrees from the M 7.6 in New Guinea of September 10 and was likely promoted by energy from that source. A similar event of M 4.7 in the Central Atlantic Azores is at this same distance from New Guinea. It had been expected in forecast 146683 within about 50 km in mid-September. This event is located at 104 degrees from Taiwan and may have been promoted by the M 6.9 there of September 18.
O: 19SEP2022 16:30:47 36.6N 11.1W mb=4.5 EMSC AZORES-CAPE ST. VINCENT RIDGE
P: 16SEP2022 146622 37.0N 10.0W 3.5-4.9 BAAAA Morocco/Spain
O: 19SEP2022 07:18:38 40.9N 29.3W mb=4.7 EMSC AZORES ISLANDS REGION
P: 12SEP2022 146683 41.0N 30.0W 4.0-5.4 CAAAA No. Mid-Atlantic Ridge
An unusual M 4.6 in the South Georgia Islands was also located at 144 degrees from the M 6.9 in Taiwan of September 18. This is the strongest earthquake within about 250 km of this epicenter since an M 5.4 on September 16, 2021, a year ago.
O: 19SEP2022 11:13:22 55.2S 35.9W mb=4.6 EMSC SOUTH GEORGIA ISLAND REGION
P: 14SEP2022 146790 60.0S 29.0W 4.0-6.0 BCCAA So. Sandwich Islands
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.6 in the Michoacan, Mexico September 19, 2022, where promoted seismicity is considered likely.
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: 19SEP2022 22:36:13 36.5N 71.2E mb=4.3 EMSC HINDU KUSH REGION, AFGHANISTAN
O: 20SEP2022 04:18:30 34.6N 70.6E mb=4.4 EMSC HINDU KUSH REGION, AFGHANISTAN
O: 19SEP2022 20:44:57 37.0N 71.2E mb=4.2 EMSC HINDU KUSH REGION, AFGHANISTAN
P: 15SEP2022 146616 37.0N 70.0E 3.8-5.2 BAAAA Hindu Kush/Pakistan
O: 19SEP2022 19:37:15 34.7N 80.1E mb=4.3 EMSC WESTERN XIZANG
O: 19SEP2022 16:28:27 34.7N 80.3E mb=4.7 EMSC WESTERN XIZANG
P: 15SEP2022 146617 30.0N 79.0E 3.8-5.6 BCAAA India
O: 19SEP2022 16:24:53 39.1N 73.1E mb=4.0 EMSC TAJIKISTAN
P: 19SEP2022 146616 38.0N 74.0E 3.8-5.4 ABAAA Hindu Kush/Pakistan
O: 20SEP2022 01:23:31 23.3N 121.4E ML=4.3 EMSC TAIWAN
O: 19SEP2022 11:30:33 23.3N 121.3E ML=4.5 EMSC TAIWAN
P: 20SEP2022 146597 23.0N 121.0E 4.0-5.5 AAAAA Taiwan
INDONESIA AND PHILIPPINES
O: 19SEP2022 20:31:10 0.1N 129.9E ML=4.0 EMSC HALMAHERA, INDONESIA
P: 17SEP2022 146531 1.0N 128.0E 4.0-5.5 AABAA Halmahera
O: 20SEP2022 06:52:36 0.2S 123.3E ML=4.0 EMSC SULAWESI, INDONESIA
P: 19SEP2022 146533 0.0N 123.0E 4.0-5.6 AAAAA Mindanao, Philippines
O: 19SEP2022 20:13:36 2.3N 125.7E ML=4.5 EMSC KEPULAUAN SANGIHE, INDONESIA
P: 10SEP2022 146284 4.0N 127.0E 4.0-5.4 CBBAA Halmahera
O: 19SEP2022 17:49:34 3.7N 126.9E ML=4.0 EMSC KEPULAUAN TALAUD, INDONESIA
P: 10SEP2022 146284 4.0N 127.0E 4.0-5.4 CAAAA Halmahera
O: 19SEP2022 19:16:25 5.6S 102.8E mb=4.2 EMSC SOUTHERN SUMATRA, INDONESIA
P: 17SEP2022 146552 4.0S 103.0E 4.0-5.4 AAAAA So. of Sumatera
O: 19SEP2022 17:29:39 5.7S 146.2E mb=4.5 EMSC EASTERN NEW GUINEA REG., P.N.G
P: 18SEP2022 146544 5.0S 146.0E 4.0-5.4 AAAAA New Ireland
O: 19SEP2022 13:06:59 6.0N 125.8E mb=4.5 EMSC MINDANAO, PHILIPPINES
P: 12SEP2022 146533 6.0N 125.0E 4.0-5.4 CAAAA Mindanao, Philippines
O: 19SEP2022 20:04:44 6.7S 155.3E mb=4.9 EMSC BOUGAINVILLE REGION, P.N.G.
P: 18SEP2022 146543 7.0S 154.0E 4.0-5.4 AABAA New Britain
O: 19SEP2022 21:22:15 12.4N 126.0E ML=4.0 EMSC SAMAR, PHILIPPINES
P: 13SEP2022 146569 10.0N 127.0E 3.5-5.2 CCAAA Luzon, Philippines
O: 19SEP2022 16:37:06 8.1S 109.6E ML=4.2 EMSC JAVA, INDONESIA
P: 15SEP2022 146551 9.0S 109.0E 4.0-5.5 BAAAA So. of Java
P: 20SEP2022 146551 9.0S 111.0E 4.0-5.6 AABAA So. of Java
CENTRAL AND SOUTH AMERICA
O: 19SEP2022 10:29:30 14.2N 92.0W mb=4.2 EMSC OFFSHORE GUATEMALA
O: 19SEP2022 15:08:03 14.3N 94.0W ML=4.3 EMSC OFF COAST OF CHIAPAS, MEXICO
O: 19SEP2022 13:26:53 15.5N 93.4W ML=4.1 EMSC OFFSHORE CHIAPAS, MEXICO
O: 19SEP2022 14:45:52 15.6N 94.8W ML=4.2 EMSC OFFSHORE OAXACA, MEXICO
O: 19SEP2022 22:38:14 16.7N 93.9W ML=4.0 EMSC CHIAPAS, MEXICO
O: 19SEP2022 12:49:59 16.8N 93.9W ML=4.1 EMSC CHIAPAS, MEXICO
O: 19SEP2022 12:17:19 17.5N 92.0W ML=4.1 EMSC CHIAPAS, MEXICO
O: 19SEP2022 07:53:12 14.1N 93.2W ML=4.0 EMSC OFF COAST OF CHIAPAS, MEXICO
P: 18SEP2022 146560 14.0N 93.0W 3.5-5.1 AAAAA Chiapas, Mexico
P: 18SEP2022 146564 14.0N 92.0W 3.5-5.3 AAAAA Guatemala
O: 19SEP2022 23:00:06 18.0N 103.3W ML=4.0 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 02:16:13 18.0N 103.3W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 02:23:41 18.0N 103.2W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 04:39:04 18.0N 103.4W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
O: 19SEP2022 22:57:06 18.1N 103.3W ML=4.2 EMSC OFFSHORE MICHOACAN, MEXICO
O: 20SEP2022 00:09:03 18.2N 103.0W ML=4.1 EMSC MICHOACAN, MEXICO
O: 20SEP2022 06:19:04 18.3N 103.3W mb=4.5 EMSC MICHOACAN, MEXICO
O: 19SEP2022 18:05:08 18.4N 103.3W Mw=7.6 EMSC MICHOACAN, MEXICO
O: 19SEP2022 19:30:41 18.5N 103.8W mb=5.3 EMSC OFFSHORE MICHOACAN, MEXICO
P: 13SEP2022 146571 19.0N 105.0W 3.5-5.3 CAAAA Michoacan, Mexico
P: 19SEP2022 146570 19.0N 101.0W 3.5-5.5 AABAA Michoacan, Mexico
O: 20SEP2022 04:37:09 22.0S 68.5W mb=4.3 EMSC ANTOFAGASTA, CHILE
O: 19SEP2022 12:59:14 22.3S 68.7W mb=4.6 EMSC ANTOFAGASTA, CHILE
P: 15SEP2022 146760 22.0S 69.0W 4.0-5.6 BAAAA Coast No. Chile
O: 20SEP2022 03:09:55 22.9S 66.4W mb=4.3 EMSC JUJUY, ARGENTINA
P: 14SEP2022 146757 23.0S 67.0W 4.0-5.8 CAAAA Argentina
P: 19SEP2022 146757 21.0S 67.0W 4.0-5.4 ABAAA Argentina
O: 19SEP2022 23:55:20 33.4S 71.7W mb=4.0 EMSC OFFSHORE VALPARAISO, CHILE
P: 18SEP2022 146773 34.0S 72.0W 4.0-5.7 AAAAA Central Chile
NEIC reported this earthquake of M 4.0 in Valparaiso, Chile was felt with intensity II-III in the area(s) of Valparaiso, Chile in Valparaiso and Villa Alemana and in Santiago.
O: 20SEP2022 04:54:54 7.0N 74.9W mb=4.5 EMSC NORTHERN COLOMBIA
P: 9SEP2022 146281 7.0N 73.0W 4.0-5.4 CABAA Colombia
NEIC reported this earthquake of M 4.5 in Colombia was felt with intensity II-III in the area(s) of Colombia in Amalfi, Medellina and Itagui, Antioquia.
O: 19SEP2022 15:09:04 10.6S 78.7W ML=4.8 EMSC NEAR COAST OF CENTRAL PERU
P: 15SEP2022 146546 8.0S 78.0W 4.0-5.5 BCAAA No. Peru
P: 15SEP2022 146743 10.0S 75.0W 3.5-5.0 BACAA Brazil
O: 19SEP2022 23:27:08 18.2N 72.7W ML=3.2 EMSC HAITI REGION
O: 19SEP2022 08:19:04 19.0N 73.4W ML=3.0 EMSC HAITI REGION
P: 15SEP2022 146581 20.0N 73.0W 3.4-5.3 BAAAA Puerto Rico
AFRICA AND EUROPE
O: 19SEP2022 16:30:47 36.6N 11.1W mb=4.5 EMSC AZORES-CAPE ST. VINCENT RIDGE
P: 16SEP2022 146622 37.0N 10.0W 3.5-4.9 BAAAA Morocco/Spain
O: 19SEP2022 14:56:58 26.4S 29.3E ML=3.0 EMSC SOUTH AFRICA
P: 14SEP2022 146763 27.0S 27.0E 3.0-4.4 BABAA Rep. South Africa
SOUTHWEST PACIFIC
O: 20SEP2022 04:22:49 15.6S 167.9E mb=5.1 EMSC VANUATU
P: 15SEP2022 146755 15.0S 168.0E 4.0-5.6 BAAAA Vanuatu Islands
O: 19SEP2022 09:26:20 18.1S 178.2W mb=4.3 EMSC FIJI REGION
P: 20SEP2022 146753 17.0S 178.0W 4.0-5.8 ABAAA Tonga Islands
OCEAN RIDGES
O: 19SEP2022 16:30:47 36.6N 11.1W mb=4.5 EMSC AZORES-CAPE ST. VINCENT RIDGE
P: 16SEP2022 146622 37.0N 10.0W 3.5-4.9 BAAAA Morocco/Spain
O: 19SEP2022 07:18:38 40.9N 29.3W mb=4.7 EMSC AZORES ISLANDS REGION
P: 12SEP2022 146683 41.0N 30.0W 4.0-5.4 CAAAA No. Mid-Atlantic Ridge
O: 19SEP2022 17:53:46 36.9S 78.6E Mw=5.6 EMSC MID-INDIAN RIDGE
O: 19SEP2022 16:42:58 37.0S 78.4E Mw=5.8 EMSC MID-INDIAN RIDGE
P: 14SEP2022 146781 37.0S 79.0E 4.0-5.6 BAAAA So. Indian Ocean
O: 19SEP2022 11:13:22 55.2S 35.9W mb=4.6 EMSC SOUTH GEORGIA ISLAND REGION
P: 14SEP2022 146790 60.0S 29.0W 4.0-6.0 BCCAA So. Sandwich Islands
ZEALANDIA AND AUSTRALIA REGION
O: 19SEP2022 20:18:39 44.5S 168.8E ML=4.1 EMSC SOUTH ISLAND OF NEW ZEALAND
O: 19SEP2022 20:18:40 44.5S 168.8E MS=4.0 GEONET Felt with weak intensity
P: 19SEP2022 146787 44.0S 168.0E 3.0-5.0 AAAAA So. Island, N.Z.
GEONET reported this earthquake was felt with weak intensity in the area southwest of Te Anau, South Island. 129 reports of felt intensity came from the area east and north of the epicenter with 92 weak, 37 light, 0 moderate, 0 strong, 0 severe and 0 extreme shaking.
today. GeoNet did not report any felt events in the area.
JAPAN AND KURIL ISLANDS
O: 19SEP2022 11:40:30 35.4N 131.0E ML=4.6 EMSC SEA OF JAPAN
P: 17SEP2022 146628 35.0N 136.0E 3.5-4.9 AACAA No. Honshu, Japan
O: 20SEP2022 00:06:34 40.1N 142.0E mb=4.6 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 18SEP2022 146667 40.0N 142.0E 3.5-5.4 AAAAA Hokkaido, Japan
NEIC reported this earthquake of M 4.5 in Eastern Japan was felt with intensity II-III in the area(s) of Eastern Japan in Saitama.
O: 19SEP2022 20:55:51 36.3N 139.8E mb=4.5 EMSC EASTERN HONSHU, JAPAN
P: 17SEP2022 146635 35.0N 140.0E 4.0-5.4 ABAAA Off East Coast Honshu
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 20SEP2022 02:52:34 33.5N 116.8W Ml=2.3 EMSC SOUTHERN CALIFORNIA
P: 13SEP2022 146642 33.7N 116.1W 2.5-4.6 CAAAA So. California
O: 19SEP2022 19:57:02 37.0N 119.8W Md=2.0 EMSC CENTRAL CALIFORNIA
P: 19SEP2022 146603 37.5N 118.6W 2.5-4.4 AABAA California/Nevada area
P: 19SEP2022 146605 38.8N 119.6W 2.5-4.8 ABAAA California/Nevada area
O: 19SEP2022 21:21:26 35.9N 117.8W Ml=2.0 EMSC CENTRAL CALIFORNIA
P: 18SEP2022 146601 36.2N 117.9W 2.5-4.5 AAAAA California/Nevada area
P: 19SEP2022 146647 35.8N 117.6W 2.5-4.6 AAAAA So. California
O: 19SEP2022 17:05:14 38.2N 117.8W ml=2.4 EMSC NEVADA
P: 15SEP2022 146603 37.9N 118.2W 2.5-4.4 BAAAA California/Nevada area
O: 20SEP2022 06:43:36 40.5N 124.4W Md=2.2 EMSC NORTHERN CALIFORNIA
P: 17SEP2022 146686 40.6N 124.9W 2.5-4.6 BAAAA Off Coast of No. Calif
ALASKA
O: 19SEP2022 21:26:01 52.9N 161.0W ml=3.4 EMSC SOUTH OF ALASKA
P: 16SEP2022 146725 54.6N 161.7W 3.5-5.2 BBAAA Unimak Islands, Aleutians
O: 19SEP2022 20:03:46 59.7N 152.8W ML=3.7 EMSC SOUTHERN ALASKA
P: 14SEP2022 146729 60.0N 153.5W 3.2-5.3 BAAAA Central Alaska
P: 17SEP2022 146732 60.8N 151.7W 3.2-5.0 AAAAA Central Alaska
O: 19SEP2022 08:26:57 62.6N 151.4W ML=3.9 EMSC CENTRAL ALASKA
O: 19SEP2022 09:41:15 63.5N 150.8W ML=3.4 EMSC CENTRAL ALASKA
P: 17SEP2022 146732 62.8N 151.2W 3.2-5.1 AAAAA Central Alaska
NEIC reported this earthquake of M 3.6 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska in Talkeetna.
O: 20SEP2022 04:03:04 68.6N 148.7W ML=3.1 EMSC 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
O: 20SEP2022 01:10:41 31.8N 104.6W ML=2.9 EMSC WESTERN TEXAS
P: 17SEP2022 146639 31.6N 103.6W 2.0-4.1 BAAAA SW U.S.A
O: 19SEP2022 21:18:15 36.6N 113.4W mb=4.4 EMSC ARIZONA
P: 19SEP2022 146604 37.8N 115.8W 2.5-4.6 ABBAA California/Nevada area
O: 19SEP2022 18:10:04 41.5N 112.2W Ml=2.9 EMSC UTAH
P: 20SEP2022 146702 43.2N 111.0W 2.0-4.3 ABAAA Yellowstone/Wyoming
O: 19SEP2022 23:39:54 44.8N 110.8W ML=2.3 EMSC YELLOWSTONE NAT. PARK, WYOMING
O: 20SEP2022 06:42:10 44.8N 110.8W Ml=2.9 EMSC YELLOWSTONE NAT. PARK, WYOMING
P: 14SEP2022 146703 44.6N 110.8W 2.0-4.1 BAAAA Yellowstone/Wyoming
P: 20SEP2022 146703 44.2N 110.3W 2.0-4.2 AAAAA Yellowstone/Wyoming
EASTERN U.S./CANADA
O: 19SEP2022 10:18:21 36.2N 93.4W Md=2.2 EMSC ARKANSAS
P: 13SEP2022 146652 35.0N 95.0W 2.0-4.1 CBBAA Southeast U.S.
HAWAII
O: 20SEP2022 04:15:20 19.3N 155.4W ML=3.0 EMSC ISLAND OF HAWAII, HAWAII
P: 17SEP2022 146566 19.3N 155.1W 3.0-4.4 BAAAA Hawaii
TROPICAL OCEANIC STORMS LIKELY TO ENHANCE REGIONAL SEISMCITY
EARTHQUAKE SUMMARY FOR SEPTEMBER 18, 2022
Moderately strong aftershocks continued in Taiwan today following the M 6.5 and 6.9 there yesterday. Earthquakes of M 5.5 and 5.7 in Taiwan today were reported by NEIC to have been felt with intensity III-IV in Chiayi, Changhua, Tainan, Taipei, Taoyuan Counties, Taiwan. Current tolls in the major earthquakes were updated to one killed and nine injured in the quakes. At least 20 moderate aftershocks were recorded today. The strongest were M 5.5 and 5.7 and 5.2. Some far-field seismic enhancement is expected from the M 6.9 in Taiwan. Areas subject to far-field seismic triggering from Taiwan include:
Antipodal (~180 degrees) : Taiwan to northern Chile,
Outer shadow zone edge (141-148 degrees) : Taiwan to Panama, Colombia, Southern Atlantic, South Sandwich Islands,
Node 3 (120 degrees) : Taiwan to Western Mexico,
P- and S- shadow zone edge and node 7 (101-110 degrees) : Taiwan to Southern California, Yellowstone National Park,
Node 4 (90 degrees) : Taiwan to Coast of Northern California, Washington,
Node 5 (72 degrees) : Taiwan to Southern, Central Alaska, Fiji, Tonga,
Node 6 (60 degrees) : Taiwan to Andreanof Islands, Alaska, Santa Cruz Islands,
Node 7 (52 degrees) : Taiwan to Pakistan,
Forecast 146597 had expected this activity in Taiwan was likely around September 20, 2022.
O: 18SEP2022 07:27:26 23.1N 121.2E ML=4.1 EMSC TAIWAN
O: 18SEP2022 07:44:17 23.1N 121.2E ML=4.1 EMSC TAIWAN
O: 18SEP2022 07:46:38 23.1N 121.2E ML=4.0 EMSC TAIWAN
O: 18SEP2022 08:46:32 23.1N 121.2E Mw=5.2 EMSC TAIWAN
O: 18SEP2022 11:27:31 23.1N 121.2E ML=4.2 EMSC TAIWAN
O: 18SEP2022 12:44:36 23.1N 121.2E ML=4.2 EMSC TAIWAN
O: 18SEP2022 18:21:10 23.1N 121.2E ML=4.4 EMSC TAIWAN
O: 18SEP2022 18:41:48 23.1N 121.2E ML=4.1 EMSC TAIWAN
O: 18SEP2022 08:30:41 23.2N 121.4E mb=4.2 EMSC TAIWAN
O: 18SEP2022 09:15:06 23.2N 121.4E ML=4.5 EMSC TAIWAN
O: 18SEP2022 09:39:58 23.2N 121.4E Mw=5.7 EMSC TAIWAN
O: 18SEP2022 09:46:32 23.2N 121.3E ML=4.8 EMSC TAIWAN
O: 18SEP2022 12:11:05 23.2N 121.2E ML=4.1 EMSC TAIWAN
O: 18SEP2022 09:20:11 23.3N 121.2E ML=4.4 EMSC TAIWAN
O: 18SEP2022 10:39:54 23.3N 121.3E ML=4.3 EMSC TAIWAN
O: 18SEP2022 08:34:06 23.4N 121.4E ML=4.3 EMSC TAIWAN
O: 18SEP2022 10:57:08 23.4N 121.3E ML=4.2 EMSC TAIWAN
O: 18SEP2022 12:33:35 23.4N 121.4E ML=4.4 EMSC TAIWAN
O: 19SEP2022 02:07:44 23.4N 121.4E Mw=5.5 EMSC TAIWAN
O: 18SEP2022 07:00:17 23.5N 121.3E ML=4.1 EMSC TAIWAN
O: 18SEP2022 07:05:18 23.5N 121.3E ML=4.0 EMSC TAIWAN
O: 18SEP2022 07:20:19 23.1N 121.2E ML=4.0 EMSC TAIWAN
P: 20SEP2022 146597 23.0N 121.0E 4.0-5.5 AAAAA Taiwan
The strongest earthquake in the world today was an M 5.7 earthquake in central Ryukyu Islands, Japan. This region became active on September 17, 2022 following the M 6.5 in Taiwan of that date. At the time this summary noted:
"A series of moderate earthquakes also followed the M 6.4 in Taiwan today in the Ryukyu Islands of Japan. These are located about 500 km northeast of the Taiwan mainshocks but were probably promoted by stress redistribution. Forecast 146594 had expected this activity in the Ryukyu Islands was likely around September 20 within about 50-100 km of these epicenters." (September 18, 2022)
The last earthquake in the Ryukyu Islands within about 200 km of this epicenter occurred on December 26, 2021 with M 5.9. The last earthquake of significantly larger magnitude in this area of the Ryukyu Islands was an M 6.5 on March 2, 2014 more than eight years ago. Typhoon Merbok passed over these epicenters several days ago and likely helped promote today's activity. Forecast 146594 had expected today's activity in this area was most likely around September 20.
O: 18SEP2022 10:05:38 26.3N 126.1E mb=5.0 EMSC RYUKYU ISLANDS, JAPAN
O: 18SEP2022 08:07:28 26.4N 126.0E mb=5.2 EMSC RYUKYU ISLANDS, JAPAN
O: 18SEP2022 08:24:30 26.5N 125.8E ML=4.8 EMSC NORTHEAST OF TAIWAN
O: 18SEP2022 08:10:00 26.3N 126.0E Mw=5.7 EMSC RYUKYU ISLANDS, JAPAN
P: 20SEP2022 146594 27.0N 125.0E 4.0-5.4 AAAAA Ryukyu Islands
An unusual earthquake of M 4,6 was recorded today off the coast of Oman south of Iran. It was the first earthquake of M>=4.6 near Oman within about 300 km of this epicenter since an M 4.7 on April 23, 2019. The last and largest in the past 30 years in the region was an M 5.5 on October 31, 2016. At the time of that earthquake this summary noted in this regard:
"The strongest earthquake of the day was an M 5.5 in the Owen Fracture Zone south of Iran. This is a remote area and this event was not reported felt or damaging in the region. This is an unusual earthquake. The last earthquake of M>=5.5 within about 250 km of this epicenter occurred more than 25 years ago. This is the strongest earthquake in the area since an M 5.6 on April 7, 1985. Similar events of M 5.5 occurred in 1966, 1963 and 1935. No earthquakes of M>5.5 have ever been recorded in this region." (November 1, 2016)
O: 19SEP2022 04:26:52 21.1N 59.6E mb=4.6 EMSC NEAR THE COAST OF OMAN
An M 5.6 also occurred today in the region of the Santa Cruz Islands in the South Pacific today. The last earthquake in the Santa Cruz Islands within about 250 km of this epicenter with M>=5.6 was an M 5.7 on January 26, 2019. Forecast 146754 had expected a moderate quake in this area around September 19.
O: 18SEP2022 09:41:46 10.7S 164.2E mb=5.6 EMSC SANTA CRUZ ISLANDS REGION
P: 19SEP2022 146754 12.0S 167.0E 4.0-5.6 ABCAA Vanuatu Islands
The strongest earthquake in the U.S. or Canada today was an M 4.8 in Central Alaska. NEIC reported it was felt with intensity IV in Alaska at Clear, Nenana, Fairbanks and III in Anderson, Fort Wainwright, North Pole, Healy and Manley Hot Springs. This earthquake of M 4.8 is the strongest event within about 200 km of this epicenter since an M 4.9 about 200 km southwest of this on September 14, 2021 and an M 4.9 on October 23, 2014. An event of 5.5 on April 8, 2021 occurred about 200 km southeast of this on April 8, 2021, the largest within about 200 km of this epicenter in the past 10 years. Forecast 146733 had expected this earthquake was likely in this area around September 18.
O: 19SEP2022 01:15:29 64.8N 149.2W Mw=4.5 EMSC CENTRAL ALASKA
O: 19SEP2022 01:15:29 64.8N 149.2W Mw=4.8 ANSS CENTRAL ALASKA
P: 18SEP2022 146733 63.3N 147.5W 3.2-5.2 ABAAA Central Alaska
An unusually large M 3.9 was widely felt in the Yellowstone National Park area of Montana and Wyoming. NEIC reported it was felt with intensity IV in Yellowstone National Park and II-III in West Yellowstone and II in Gardiner, Montana. Lesser shaking was reported from Billings, Montana and Buffalo, Wyoming and Sandy, Utah. Forecast 146703 had expected this event between September 14 and 20 was likely within about 25 km of this epicenter. This is the strongest earthquake in Yellowstone National Park, Wyoming since an M 4.4 on June 16, 2017 more than five years ago and before that an M 4.8 on March 30, 2014. This activity is at 103 degrees from the M 7.6 in New Guinea of September 10, 2022 and 101-103 degrees from the M 7.0 in Luzon of July 27, 2022 and may have been promoted by energy from those sources.
O: 18SEP2022 12:55:20 44.8N 110.8W mb=3.9 EMSC YELLOWSTONE NAT. PARK, WYOMING
P: 14SEP2022 146703 44.6N 110.8W 2.0-4.1 AAAAA Yellowstone/Wyoming
P: 20SEP2022 146703 44.2N 110.3W 2.0-4.2 AAAAA Yellowstone/Wyoming
Hurricane Fiona continued today as a strong storm over Puerto Rico where it caused major flooding, landslide and mudslides, damaged structures and caused a power loss over the entire island. This arrived from the south and the loading effect is less than if it had arrived from the north. However as this storm moves over Puerto Rico, the Dominican Republic and Haiti, regional seismicity is expected to be enhanced in the next several days. This summary had noted in previous issues in regard to this storm:
"TS Fiona continued today over Puerto Rico with winds up to 85 kts. Major flooding and complete power outage occurred on Puerto Rico today. It is expected to track to the west over the next several days reaching Puerto Rico in the next two days as a major storm. It could help promoted enhanced seismicity in the Virgin Islands, Leeward Islands and Puerto Rico around September 18-19." (September 18-19, 2022)
It was a quiet day in Puerto Rico and Hispaniola today but this may change as Hurricane Fiona moves to the north. The largest event in the area today was an M 3.1 in the Dominican Republic forecast in #146581.
O: 19SEP2022 06:45:05 19.6N 70.0W ML=3.1 EMSC DOMINICAN REPUBLIC
P: 17SEP2022 146581 19.0N 71.0W 3.4-5.3 AAAAA Puerto Rico
Another area where seismicity is likely to be impacted by a tropical storm in the next several days is central and western coastal Mexico where two tropical storms are near or at landfall at this time. Tropical Storm Lester dissipated over the region of Guerrero and Michoacan Mexico today. This is the first storm of the season to make landfall in Mexico. First landfalls often trigger unusually large earthquakes in seismically active areas such as Michoacan. Twenty-seven years ago today, this area suffered from one of the strongest great earthquakes in region of Central and North America occurred as noted in the earthquake summary yesterday:
" 9 19 13 17 47 1985 18.190 -102.533 28 8.1 Michoacan, Mexico
The Mexico City earthquake killed up to 35,000, injured more than 30,000 and left nearly 100,000 homeless. Severe damage with intensity up to IX - X in Mexico City and the surrounding area of about 1 million square km. Damage up to $5 billion U.S. Dollars. 412 building collapsed in Mexico City and more than 3000 additional structures were damaged. Felt from Houston, Texas to Guatemala City, Guatemala. Landslides, sandblows and ground cracks were common as far away as Colima. A tsunami up to 3 meters high caused damage at Lazaro and Manzanillo. Seiche was observed in Texas, Mexico, Florida and as far away as Maryland and Idaho. Resonance effects were observed in damage to high rise buildings in Mexico City. Some of these swayed so much at the top that they hit each other causing extensive damage. This may be the most deadly earthquake recorded in North or Central America in recorded history." (September 19, 2022)
In the summary of September 18-19 and in previous issues this summary noted the potential of this storm on regional seismicity as:
"TS Lester formed today South of Oaxaca, Nexico with winds up to 45 kts. It is expected to track to the northwest over the next several days reaching Guerrero and Michoacan, Mexico around September 18-20. It may provoke a moderate earthquake in that region on or shortly after landfall." (
A second storm - Madeline is currently located south of Michoacan and Colima States in Mexico. While this storm is not expected to make landfall, the location near the landfall of Lester may enhance the possibility of related seismicity in the area in the next several days. Madeline was address in this and the previous issue of this summary as:
"TS MADELINE 2022-09-20 00:00 UT 17.3N 106.6W 050 kts South of Colima, Mexico
TS Madeline formed today South of Colima, Nexico with winds up to 50 kts. It is expected to track to the west and not to make landfall in Mexico. No major seismic enhancement in Mexico is expected with this storm." (September 19, 2022)
Moderate earthquakes of M 4.1 and M 3.4 today indicate areas where seismicity may be increasing with these tropical Storms. They had been expected to occur in mid-September in forecasts 146571, 146577 and 146578. This region is at the third node from the Taiwan earthquakes of September 18 of M 6.5 and 6.9 and from the M 7.0 in Luzon, Philippines of July 27, 2022 and may have been promoted by energy from those sources.
O: 18SEP2022 23:47:16 15.7N 97.3W ML=4.0 EMSC OFFSHORE OAXACA, MEXICO
O: 18SEP2022 07:53:18 15.9N 98.4W ML=4.0 EMSC OFFSHORE OAXACA, MEXICO
O: 19SEP2022 02:09:26 17.7N 96.9W ML=4.0 EMSC OAXACA, MEXICO
O: 18SEP2022 09:58:44 16.2N 97.5W ML=4.1 EMSC OAXACA, MEXICO
P: 18SEP2022 146577 16.0N 96.0W 3.5-5.1 AABAA Oaxaca, Mexico
P: 18SEP2022 146578 16.0N 99.0W 3.5-5.2 AABAA Oaxaca, Mexico
O: 18SEP2022 20:23:43 19.4N 104.2W ML=3.5 EMSC JALISCO, MEXICO
O: 18SEP2022 09:38:13 19.5N 104.7W ML=3.4 EMSC JALISCO, MEXICO
P: 13SEP2022 146571 19.0N 105.0W 3.5-5.3 AAAAA Michoacan, Mexico
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.0 in the Taiwan September 17, 2022, where promoted seismicity is considered likely.
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: 19SEP2022 04:26:52 21.1N 59.6E mb=4.6 EMSC NEAR THE COAST OF OMAN
O: 18SEP2022 21:34:13 21.4N 94.9E mb=4.5 EMSC MYANMAR
P: 20SEP2022 146591 20.0N 96.0E 4.0-5.4 ABAAA Myanmar
O: 19SEP2022 04:00:00 35.5N 75.0E mb=4.6 EMSC NORTHWESTERN KASHMIR
P: 15SEP2022 146637 33.0N 74.0E 3.8-5.5 BCAAA Pakistan
O: 18SEP2022 07:27:26 23.1N 121.2E ML=4.1 EMSC TAIWAN
O: 18SEP2022 07:44:17 23.1N 121.2E ML=4.1 EMSC TAIWAN
O: 18SEP2022 07:46:38 23.1N 121.2E ML=4.0 EMSC TAIWAN
O: 18SEP2022 08:46:32 23.1N 121.2E Mw=5.2 EMSC TAIWAN
O: 18SEP2022 11:27:31 23.1N 121.2E ML=4.2 EMSC TAIWAN
O: 18SEP2022 12:44:36 23.1N 121.2E ML=4.2 EMSC TAIWAN
O: 18SEP2022 18:21:10 23.1N 121.2E ML=4.4 EMSC TAIWAN
O: 18SEP2022 18:41:48 23.1N 121.2E ML=4.1 EMSC TAIWAN
O: 18SEP2022 08:30:41 23.2N 121.4E mb=4.2 EMSC TAIWAN
O: 18SEP2022 09:15:06 23.2N 121.4E ML=4.5 EMSC TAIWAN
O: 18SEP2022 09:39:58 23.2N 121.4E Mw=5.7 EMSC TAIWAN
O: 18SEP2022 09:46:32 23.2N 121.3E ML=4.8 EMSC TAIWAN
O: 18SEP2022 12:11:05 23.2N 121.2E ML=4.1 EMSC TAIWAN
O: 18SEP2022 09:20:11 23.3N 121.2E ML=4.4 EMSC TAIWAN
O: 18SEP2022 10:39:54 23.3N 121.3E ML=4.3 EMSC TAIWAN
O: 18SEP2022 08:34:06 23.4N 121.4E ML=4.3 EMSC TAIWAN
O: 18SEP2022 10:57:08 23.4N 121.3E ML=4.2 EMSC TAIWAN
O: 18SEP2022 12:33:35 23.4N 121.4E ML=4.4 EMSC TAIWAN
O: 19SEP2022 02:07:44 23.4N 121.4E Mw=5.5 EMSC TAIWAN
O: 18SEP2022 07:00:17 23.5N 121.3E ML=4.1 EMSC TAIWAN
O: 18SEP2022 07:05:18 23.5N 121.3E ML=4.0 EMSC TAIWAN
O: 18SEP2022 07:20:19 23.1N 121.2E ML=4.0 EMSC TAIWAN
P: 20SEP2022 146597 23.0N 121.0E 4.0-5.5 AAAAA Taiwan
O: 18SEP2022 15:06:40 35.9N 77.9E mb=4.1 EMSC KASHMIR-XINJIANG BORDER REGION
P: 13SEP2022 146633 35.0N 75.0E 3.8-5.3 BABAA Northern India
O: 19SEP2022 06:07:52 56.7N 117.5E mb=4.4 EMSC CHITINSKAYA OBLAST', RUSSIA
P: 14SEP2022 146723 57.0N 121.0E 3.0-4.4 BACAA So. Siberia
O: 18SEP2022 12:57:57 28.9N 95.9E mb=4.5 EMSC ARUNACHAL PRADESH, INDIA
P: 17SEP2022 146658 30.0N 90.0E 3.8-5.3 ABCAA Xizang
O: 19SEP2022 00:39:25 31.1N 82.8E mb=4.2 EMSC WESTERN XIZANG
P: 13SEP2022 146657 31.0N 84.0E 3.8-5.4 CAAAA Xizang
INDONESIA AND PHILIPPINES
O: 19SEP2022 00:15:01 0.6N 122.4E ML=4.2 EMSC MINAHASA, SULAWESI, INDONESIA
P: 19SEP2022 146533 0.0N 123.0E 4.0-5.6 AAAAA Mindanao, Philippines
O: 19SEP2022 03:44:49 4.4N 96.5E ML=4.4 EMSC NORTHERN SUMATRA, INDONESIA
P: 12SEP2022 146534 5.0N 95.0E 4.0-5.7 CABAA Nicobar Islands
O: 18SEP2022 20:05:16 4.6S 123.9E ML=4.2 EMSC BANDA SEA
P: 16SEP2022 146554 2.0S 123.0E 4.0-5.4 ABAAA Sulawesi area
O: 19SEP2022 04:29:04 5.4S 146.6E mb=5.0 EMSC EASTERN NEW GUINEA REG., P.N.G
P: 18SEP2022 146544 5.0S 146.0E 4.0-5.4 AAAAA New Ireland
O: 19SEP2022 05:24:26 8.4N 126.9E ML=4.1 EMSC MINDANAO, PHILIPPINES
P: 19SEP2022 146527 9.0N 126.0E 4.0-5.4 AAAAA Central Philippines
O: 18SEP2022 14:49:51 12.3N 120.9E ML=4.2 EMSC MINDORO, PHILIPPINES
O: 18SEP2022 08:24:18 17.7N 120.5E ML=4.1 EMSC LUZON, PHILIPPINES
P: 15SEP2022 146569 17.0N 120.0E 3.5-5.1 BAAAA Luzon, Philippines
CENTRAL AND SOUTH AMERICA
O: 18SEP2022 10:52:43 15.3N 94.7W ML=4.0 EMSC OFF COAST OF OAXACA, MEXICO
P: 18SEP2022 146560 14.0N 93.0W 3.5-5.1 ABBAA Chiapas, Mexico
O: 18SEP2022 23:47:16 15.7N 97.3W ML=4.0 EMSC OFFSHORE OAXACA, MEXICO
O: 18SEP2022 07:53:18 15.9N 98.4W ML=4.0 EMSC OFFSHORE OAXACA, MEXICO
O: 19SEP2022 02:09:26 17.7N 96.9W ML=4.0 EMSC OAXACA, MEXICO
O: 18SEP2022 09:58:44 16.2N 97.5W ML=4.1 EMSC OAXACA, MEXICO
P: 18SEP2022 146577 16.0N 96.0W 3.5-5.1 AABAA Oaxaca, Mexico
P: 18SEP2022 146578 16.0N 99.0W 3.5-5.2 AABAA Oaxaca, Mexico
O: 19SEP2022 06:12:39 6.7N 73.0W mb=4.9 EMSC NORTHERN COLOMBIA
P: 9SEP2022 146281 7.0N 73.0W 4.0-5.4 CAAAA Colombia
NEIC reported this earthquake of M 4.9 in Colombia was felt with intensity III-IV in the area(s) of Colombia in Bucaramanga and Rionegro, Santander and Antioquia and in Floridablanca, Sardinal, Guanacaste.
O: 18SEP2022 20:23:43 19.4N 104.2W ML=3.5 EMSC JALISCO, MEXICO
O: 18SEP2022 09:38:13 19.5N 104.7W ML=3.4 EMSC JALISCO, MEXICO
P: 13SEP2022 146571 19.0N 105.0W 3.5-5.3 AAAAA Michoacan, Mexico
O: 19SEP2022 06:45:05 19.6N 70.0W ML=3.1 EMSC DOMINICAN REPUBLIC
P: 17SEP2022 146581 19.0N 71.0W 3.4-5.3 AAAAA Puerto Rico
O: 19SEP2022 06:25:56 27.4N 111.4W ML=3.5 EMSC GULF OF CALIFORNIA
O: 18SEP2022 07:00:25 26.7N 111.4W ML=3.9 EMSC GULF OF CALIFORNIA
P: 17SEP2022 146586 28.0N 112.0W 3.5-5.1 ABAAA Gulf of California
O: 18SEP2022 19:53:26 22.1S 69.8W ML=4.0 EMSC ANTOFAGASTA, CHILE
O: 18SEP2022 18:20:55 21.2S 68.5W mb=4.4 EMSC ANTOFAGASTA, CHILE
P: 19SEP2022 146757 21.0S 67.0W 4.0-5.4 AABAA Argentina
AFRICA AND EUROPE
O: 18SEP2022 09:50:51 35.0N 32.2E mb=4.3 EMSC CYPRUS REGION
P: 8SEP2022 146396 35.0N 34.0E 3.5-5.1 CABAA Turkey
NEIC reported this earthquake of M 4.3 in Cyprus was felt with intensity II-III in the area(s) of Cyprus at Pafos.
O: 19SEP2022 03:31:39 35.2N 26.4E ML=4.1 EMSC CRETE, GREECE
P: 15SEP2022 146599 35.0N 26.0E 3.0-4.6 BAAAA Aegean Sea
O: 18SEP2022 13:54:39 40.2N 20.0E mb=4.5 EMSC ALBANIA
P: 17SEP2022 146693 41.0N 21.0E 3.0-5.3 AAAAA Romania/NW Turkey
O: 18SEP2022 17:28:49 71.2N 6.4W ML=2.6 EMSC JAN MAYEN ISLAND REGION
P: 13SEP2022 146741 71.0N 8.0W 3.5-4.9 BAAAA Jan Mayen Isl. area
O: 18SEP2022 17:42:45 78.1N 7.4E mb=4.3 EMSC SVALBARD REGION
P: 13SEP2022 146741 79.0N 7.0E 4.0-5.9 BAAAA Arctic Ocean Region
O: 18SEP2022 17:55:25 45.1N 25.5E ML=4.1 EMSC ROMANIA
P: 18SEP2022 146694 46.0N 27.0E 3.0-5.1 AAAAA Romania/NW Turkey
No significant (M>=5) or unusual earthquakes were reported in Europe today.
SOUTHWEST PACIFIC
O: 18SEP2022 09:41:46 10.7S 164.2E mb=5.6 EMSC SANTA CRUZ ISLANDS REGION
P: 19SEP2022 146754 12.0S 167.0E 4.0-5.6 ABCAA Vanuatu Islands
O: 18SEP2022 13:42:01 23.6S 179.6W mb=4.6 EMSC SOUTH OF FIJI ISLANDS
P: 16SEP2022 146769 23.0S 180.0W 4.0-5.4 AAAAA Tonga Islands
P: 18SEP2022 146769 24.0S 178.0W 4.0-5.8 AAAAA Tonga Islands
OCEAN RIDGES
O: 19SEP2022 04:26:52 21.1N 59.6E mb=4.6 EMSC NEAR THE COAST OF OMAN
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: 18SEP2022 10:05:38 26.3N 126.1E mb=5.0 EMSC RYUKYU ISLANDS, JAPAN
O: 18SEP2022 08:07:28 26.4N 126.0E mb=5.2 EMSC RYUKYU ISLANDS, JAPAN
O: 18SEP2022 08:24:30 26.5N 125.8E ML=4.8 EMSC NORTHEAST OF TAIWAN
O: 18SEP2022 08:10:00 26.3N 126.0E Mw=5.7 EMSC RYUKYU ISLANDS, JAPAN
P: 20SEP2022 146594 27.0N 125.0E 4.0-5.4 AAAAA Ryukyu Islands
O: 19SEP2022 01:53:21 24.9N 123.9E mb=4.4 EMSC SOUTHWESTERN RYUKYU ISL., JAPA
P: 20SEP2022 146594 25.0N 123.0E 4.0-5.4 AAAAA Ryukyu Islands
O: 18SEP2022 12:38:24 28.8N 142.8E mb=4.4 EMSC BONIN ISLANDS, JAPAN REGION
P: 19SEP2022 146585 29.0N 142.0E 4.0-5.6 AAAAA Bonin Islands
O: 18SEP2022 23:50:30 37.7N 141.6E ML=4.3 EMSC NEAR EAST COAST OF HONSHU, JAP
O: 18SEP2022 18:12:06 38.4N 142.2E mb=4.5 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 18SEP2022 146650 38.0N 145.0E 4.0-5.5 AABAA So. of Honshu
O: 18SEP2022 23:26:25 44.8N 146.3E mb=4.4 EMSC KURIL ISLANDS
P: 18SEP2022 146696 45.0N 146.0E 3.5-5.4 AAAAA So. Kurils
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 18SEP2022 08:11:38 31.8N 117.0W ML=3.7 EMSC OFFSHORE BAJA CALIFORNIA, MEXI
P: 17SEP2022 146643 33.0N 117.7W 2.5-4.6 ABAAA So. California
O: 18SEP2022 22:17:36 32.8N 115.4W Ml=2.0 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 09:13:21 33.8N 115.9W ML=3.3 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 15:33:06 33.8N 115.9W ML=2.7 EMSC SOUTHERN CALIFORNIA
P: 13SEP2022 146640 32.9N 115.6W 2.5-4.4 BAAAA So. California
O: 18SEP2022 13:48:10 34.0N 117.1W Ml=2.2 EMSC GREATER LOS ANGELES AREA, CALI
P: 19SEP2022 146643 34.2N 117.8W 2.5-4.6 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 Southern California in Indio, Redlands.
O: 18SEP2022 20:08:53 36.2N 120.3W Md=2.0 EMSC CENTRAL CALIFORNIA
P: 17SEP2022 146607 36.7N 121.4W 2.5-4.9 AAAAA Central California
O: 19SEP2022 04:47:18 36.7N 121.4W ML=3.0 EMSC CENTRAL CALIFORNIA
O: 19SEP2022 03:03:13 36.9N 121.4W Md=2.5 EMSC CENTRAL CALIFORNIA
O: 18SEP2022 11:15:28 36.6N 121.2W Md=2.0 EMSC CENTRAL CALIFORNIA
P: 17SEP2022 146607 36.7N 121.4W 2.5-4.9 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 Central California in Hollister, San Juan Bautista, Salina, Marina, Watsonville, Los Banos. A foreshock of M 2.5 was felt with intensity II in Hollister and San Jose.
O: 18SEP2022 15:31:01 37.9N 122.3W Md=2.0 EMSC SAN FRANCISCO BAY AREA, CALIF.
P: 18SEP2022 146609 38.0N 122.3W 2.5-4.6 AAAAA Central California
ALASKA
O: 19SEP2022 03:38:13 51.8N 177.0W ml=3.5 EMSC ANDREANOF ISLANDS, ALEUTIAN IS
P: 17SEP2022 146705 51.9N 176.0W 3.5-5.0 AAAAA Andreanoff Isls, Aleutians
O: 19SEP2022 01:15:29 64.8N 149.2W Mw=4.5 EMSC CENTRAL ALASKA
P: 18SEP2022 146733 63.3N 147.5W 3.2-5.2 ABAAA 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: 18SEP2022 08:01:10 32.1N 102.1W ML=2.0 EMSC WESTERN TEXAS
P: 17SEP2022 146639 31.6N 103.6W 2.0-4.1 AAAAA SW U.S.A
O: 18SEP2022 11:30:48 44.5N 115.3W ML=2.4 EMSC SOUTHERN IDAHO
P: 18SEP2022 146675 44.4N 115.2W 2.0-4.4 AAAAA Montana/Idaho
O: 18SEP2022 12:55:20 44.8N 110.8W mb=3.9 EMSC YELLOWSTONE NAT. PARK, WYOMING
P: 14SEP2022 146703 44.6N 110.8W 2.0-4.1 AAAAA Yellowstone/Wyoming
P: 20SEP2022 146703 44.2N 110.3W 2.0-4.2 AAAAA Yellowstone/Wyoming
O: 19SEP2022 02:07:55 46.9N 112.5W ML=2.6 EMSC WESTERN MONTANA
P: 10SEP2022 146443 46.4N 111.4W 2.0-4.3 CAAAA Yellowstone/Wyoming
P: 18SEP2022 146676 44.5N 112.6W 2.0-4.1 AAAAA Montana/Idaho
EASTERN U.S./CANADA
No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.
HAWAII
No earthquakes of M>=3 were located in Hawaii.
STRONG EARTHQUAKES DAMAGING IN TAIWAN PROBABLY TRIGGERED BY SOLAR FLARE
EARTHQUAKE SUMMARY FOR SEPTEMBER 17, 2022
A pair of strong to major earthquakes hit the region of Central Taiwan today. These events of M 6.4-6.6 and M 6.9-7.2 were reported with maximum intensity IV in Taitung by NEIC with moderate shaking throughout the remainder of the island. The second event was generally felt with higher intensity by one from the first event in the series. A strong series of aftershocks including an M 5.5 was also felt throughout Taiwan. The first of these - the M 6.5 occurred in conjunction with flare 2380 - an M1.9 flare and the strongest flare in the past day and was probably triggered by SFE from this event. It occurred near local solar midnight, a time when SFE are prominent in triggering local seismicity. The relation between solar flares and seismicity in Taiwan had most recently been illuminated in the previous issue of this summary as:
"An M6.2 solar flare occurred while Taiwan was at local solar midnight and may tend to further enhance seismicity in that region, recently stressed by Typhoon Muifa." (September 17, 2022)
An M 4.7 in Tarapaca, Chile followed the M 6.5 in Taiwan by a minute. It too may have been triggered an the solar flare peaking at 13:39 UT.
This activity had been anticipated in previous issues of this summary as a reaction to the passage of Typhoon Muifa over Taiwan several days ago. This was detailed in the previous issue of this summary as:
"Other areas still susceptible to the stresses wrought on the area by Muifa where a moderate to large earthquake could still occur are Taiwan and the Ryukyu Islands.
"Typhoon Muifa (14W) continued today over eastern China with winds up to 55 kts. It is expected to track to the northwest over the next several days and may help promote seismicity in the region of Taiwan, China and the Ryukyu Islands in the next several days." (September 14-16, 2022)
"Typhoon Muifa (14W) continued today over Taiwan with winds up to 110 kts. It is expected to track to the northwest over the next several days and may help promote seismicity in the region of Taiwan and the Ryukyu Islands in the next several days." (September 14, 2022)
These earthquakes triggered tsunami warnings from Taiwan to Japan, but no major tsunami was reported. At least one building collapsed - a convenience shop - in the quakes but no deaths were reported. This may change following rescue efforts. At leas 600 people were trapped on Mountain Roads. Six train carriages were derailed in Dongli Station in eastern Taiwan and train service was shut down. CWB reported the M 6.4 was felt with intensity VI in Taitung, V in Hualien and Kaohsiung, IV in Chiayi, Pingtung, Nantou, Yunlin, Chiayi, III in Maoli, Hsinchu, Yilan, Taichung, Changhua, Taipei, and II in Penghu Counties, Taiwan. CWB reported the M 6.9 was felt with intensity VI in Taitung and Hualien, V in Nantou, Kaohsiung, IV in Yilan, Taichung, Changhua, Yunlin, Taipei, Chiayi, Mialoi, Tainan, Hsinchu, Pingtung and III in Taoyuan, Penghu and I in Lienchiang Counties, Taiwan. Manufacturing facilities in Tawain were reportedly unaffected by these earthquakes. The last earthquake in Taiwan of M>=6.9 was an M 6.9 on December 26, 2006. An M 7.7 near today's epicenter occurred on September 20, 1999 - 23 years ago. The only other such event in Taiwan in the past 30 years was an M 7.1 on March 31, 2002. A moderate foreshock of M 5.3 hit this area of Taiwan on September 14.
"A series of moderate earthquakes hit the region of Taiwan and to the north today. This included an M 4.9-5.3 in southern Taiwan and events of M 4.4, 4.4 and 4.9 northeast of Taiwan near the Ryukyu Islands. CWB reported the M 5.3 in Taiwan was felt with intensity IV in Taitung, II in Pingtung, Tainan, Chiayi, Yunlin, Kaohsiung, Hualien and I in Nantou and Changhua Counties, Taiwan. NEIC reported this earthquake of M 4.9 in Southern Taiwan was felt with intensity II-III in the area(s) of Southern Taiwan in Kaohsiung County. The last event in Taiwan reported with M>=5.3 was an M 5.4 on June 28, 2022. The last of significantly larger magnitude was an M 5.9 on June 20, 2022. These are probably aftershocks of the M 6.7 north of today's epicenter on March 22, 2022. This activity follows the passage of Typhoon Muifa over Taiwan and the epicenters to the north over the past three days. ...
Typhoon Muifa passed over the epicenters northeast of Taiwan on September 13 about the time these three earthquakes occurred. It is likely that stresses from this storm probably helped trigger these events. The M 4.9 occurred within minutes of local solar midnight and was also probably promoted by high tidal stresses which maximize near this hour." (September 14-15, 2022)
The M 6.4 was coincident with the peak of an M1.9 flare (#2380) as shown by data from SWPC below:
Flare # START MAX END CLASS DATE Flux (Jm-2)
#-------------------------------------------------------------------------------
2380 1321 1339 1353 M1.9 (September 18, 2022) 3.1E-02
2450 2032 2041 2052 M2.6 (September 18, 2022) 2.1E-02
Today's earthquake in Taiwan may also have been promoted by the M 7.0 about 500 km to the south in northern Philippines of July 27 by redistribution of regional stress. Forecast 146597 had expected today's activity in Taiwan was likely in mid-September within about 100 km of these epicenters.
O: 18SEP2022 06:57:33 23.0N 121.3E mb=5.1 EMSC TAIWAN REGION
O: 17SEP2022 13:55:43 23.1N 121.2E mb=4.9 EMSC TAIWAN
O: 17SEP2022 14:12:51 23.1N 121.2E ML=4.1 EMSC TAIWAN
O: 17SEP2022 14:35:15 23.1N 121.2E Mw=5.1 EMSC TAIWAN
O: 17SEP2022 14:45:29 23.1N 121.3E Mw=5.5 EMSC TAIWAN
O: 17SEP2022 15:00:11 23.1N 121.2E mb=4.7 EMSC TAIWAN
O: 17SEP2022 15:03:19 23.1N 121.2E ML=4.2 EMSC TAIWAN
O: 17SEP2022 15:24:34 23.1N 121.2E ML=4.0 EMSC TAIWAN
O: 17SEP2022 15:33:06 23.1N 121.2E ML=4.3 EMSC TAIWAN
O: 17SEP2022 16:18:47 23.1N 121.2E ML=4.1 EMSC TAIWAN
O: 17SEP2022 18:03:29 23.1N 121.4E Mw=4.6 EMSC TAIWAN
O: 17SEP2022 21:41:43 23.1N 121.3E ML=4.1 EMSC TAIWAN
O: 17SEP2022 22:05:52 23.1N 121.2E ML=4.3 EMSC TAIWAN
O: 18SEP2022 01:52:34 23.1N 121.3E mb=4.7 EMSC TAIWAN
O: 18SEP2022 02:00:08 23.1N 121.4E mb=4.6 EMSC TAIWAN
O: 18SEP2022 03:49:21 23.1N 121.3E ML=4.5 EMSC TAIWAN
O: 18SEP2022 04:07:41 23.1N 121.3E mb=4.1 EMSC TAIWAN
O: 18SEP2022 05:54:40 23.1N 121.3E mb=4.5 EMSC TAIWAN
O: 18SEP2022 06:48:48 23.1N 121.2E ML=4.0 EMSC TAIWAN
O: 17SEP2022 13:41:19 23.2N 121.4E Mw=6.5 EMSC TAIWAN
O: 18SEP2022 05:19:19 23.2N 121.3E mb=5.5 EMSC TAIWAN
O: 18SEP2022 06:32:02 23.2N 121.4E Mw=5.2 EMSC TAIWAN
O: 18SEP2022 06:33:25 23.2N 121.3E ML=4.0 EMSC TAIWAN
O: 18SEP2022 06:44:17 23.2N 121.4E Mw=6.9 EMSC TAIWAN
O: 18SEP2022 07:00:17 23.5N 121.3E ML=4.1 EMSC TAIWAN
O: 18SEP2022 07:05:18 23.5N 121.3E ML=4.0 EMSC TAIWAN
O: 17SEP2022 19:25:56 24.0N 122.8E mb=4.4 EMSC TAIWAN REGION
O: 18SEP2022 04:10:52 22.7N 121.1E mb=4.4 EMSC TAIWAN REGION
O: 18SEP2022 06:44:15 23.1N 121.2E ML=6.8 TAI Hualien, Taiwan
O: 17SEP2022 13:41:19 23.1N 121.2E ML=6.4 TAI Hualien, Taiwan
P: 20SEP2022 146597 23.0N 121.0E 4.0-5.5 AAAAA Taiwan
P: 15SEP2022 146597 24.0N 121.0E 4.0-5.4 AAAAA Taiwan
A series of moderate earthquakes also followed the M 6.4 in Taiwan today in the Ryukyu Islands of Japan. These are located about 500 km northeast of the Taiwan mainshocks but were probably promoted by stress redistribution.
Forecast 146594 had expected this activity in the Ryukyu Islands was likely around September 20 within about 50-100 km of these epicenters.
O: 17SEP2022 18:25:31 26.2N 125.9E mb=4.4 EMSC NORTHEAST OF TAIWAN
O: 18SEP2022 06:04:42 26.4N 126.1E mb=4.5 EMSC RYUKYU ISLANDS, JAPAN
O: 17SEP2022 10:29:30 26.5N 126.0E ML=4.8 EMSC RYUKYU ISLANDS, JAPAN
O: 18SEP2022 05:59:53 26.4N 126.0E mb=4.9 EMSC NORTHEAST OF TAIWAN
P: 20SEP2022 146594 27.0N 125.0E 4.0-5.4 AAAAA Ryukyu Islands
O: 18SEP2022 02:56:10 24.9N 123.3E mb=4.3 EMSC SOUTHWESTERN RYUKYU ISL., JAPA
P: 20SEP2022 146594 25.0N 123.0E 4.0-5.4 AAAAA Ryukyu Islands
The strongest earthquakes in the U.S. or Canada were a series throughout the region of M 3.4-3.7. The largest of these, an M 3.7 in Southern Alaska occurred within minutes of local solar noon and was probably promoted by tidal stresses. Another in the Gulf of Alaska of M 3.4 followed the M 6.4 in Taiwan two minutes later and was probably promoted by flare 2380 as was the activity in Taiwan (see discussion above). Forecasts had expected all of these within about 100 km in mid-September.
O: 17SEP2022 21:28:21 51.7N 178.1W ml=3.6 EMSC ANDREANOF ISLANDS, ALEUTIAN IS
P: 14SEP2022 146705 51.0N 177.1W 3.5-5.2 BAAAA Andreanoff Isls, Aleutians
O: 17SEP2022 09:09:41 55.7N 154.9W ML=3.5 EMSC SOUTH OF ALASKA
P: 14SEP2022 146704 56.8N 157.7W 3.5-4.9 BBBAA Alaska Peninsula
O: 17SEP2022 13:43:25 56.3N 149.3W ML=3.4 EMSC GULF OF ALASKA
P: 15SEP2022 146736 55.9N 149.8W 3.0-5.2 AAAAA Northern Alaska
O: 17SEP2022 22:08:34 59.6N 153.0W ML=3.7 EMSC SOUTHERN ALASKA
P: 14SEP2022 146729 60.0N 153.5W 3.2-5.3 BAAAA Central Alaska
Like the earthquakes in Taiwan and the Gulf of Alaska, the strongest earthquake in the western Hemisphere today also coincided with the peak of Flare 2380 and within a minute of the event in the Gulf of Alaska and the M 6.4-6.5 in Taiwan.
This was an M 5.1 in the Tarapaca area of northern Chile. GUC reported this earthquake was felt with intensity IV in Tarapaca at El Loa, Huara, Iquique, III in Camina, La Tirana, Pica, Pozo Almonte and in Arica with III in Arica, Cuya and II in San Miguel de Azapa, Chile. NEIC reported these earthquakes of M 5.1 and 4.2 in Northern Chile were felt with intensity II-III in the area(s) of Northern Chile in Iquique (IV), and Arica, Tarapaca. Forecast 146760 had expected this event was likely about 200 km south of the epicenter around September 15. This epicenter is near the antipode from Taiwan.
O: 17SEP2022 15:05:02 20.2S 69.2W ML=4.2 EMSC TARAPACA, CHILE
O: 17SEP2022 13:42:40 20.2S 69.3W Mw=4.7 EMSC TARAPACA, CHILE
O: 17SEP2022 13:42 20.2S 69.2W mb=4.7 GUC Tarapaca at El Loa, Huara, Iqu
O: 17SEP2022 13:42 20.2S 69.2W mb=5.1 ANSS Tarapaca at El Loa, Huara, Iqu
P: 15SEP2022 146760 22.0S 69.0W 4.0-5.6 AAAAA Coast No. Chile
Some of the strongest activity today the U.S. outside Alaska occurred off the coast of Northern California. These events of M 2.8-3.3 and 2.4 may have been promoted by strong tidal stresses as they occurred within minutes of local solar noon. They may also have been triggered by flare #2450 (see flare data from SWPC above and in the external effects section of this summary), the other M-class flare today which was simultaneous with these earthquakes in Northern California. This activity had been expected within about 25 km of these epicenters around September 15.
NEIC reported this earthquake of M 3.4 off the coast of northern California was felt with intensity II-III in the area(s) of northern California in Petrolia (IV), Ferndale, Rio Dell, Fortuna, Loleta, Carlotta and Eureka. This activity is located at the fourth node from Taiwan (90 degrees) and was probably promoted by energy from that source. Forecast 146686 had expected the events off northern California were likely within about 25 km around September 15.
O: 17SEP2022 20:31:58 40.4N 124.6W ML=2.4 EMSC OFFSHORE NORTHERN CALIFORNIA
O: 17SEP2022 20:44:16 40.4N 124.5W ML=2.8 EMSC OFFSHORE NORTHERN CALIFORNIA
O: 17SEP2022 20:44:16 40.4N 124.5W ML=3.4 ANSS OFFSHORE NORTHERN CALIFORNIA
P: 15SEP2022 146686 40.2N 124.2W 2.5-4.8 AAAAA Off Coast of No. Calif
A series of earthquake in Southern California near Midpines also occurred today and contained the largest earthquake in the lower 48 states of the day. This activity occurred at 102 degrees from Taiwan and was probably promoted by energy from that source. The M 3.5 shock occurred within about 30 minutes of local solar midnight and may have also been promoted by strong tidal stresses which maximize near this hour.
O: 17SEP2022 09:10:20 31.5N 115.7W ML=3.3 EMSC BAJA CALIFORNIA, MEXICO
O: 17SEP2022 09:30:29 31.2N 115.7W ML=3.1 EMSC BAJA CALIFORNIA, MEXICO
O: 18SEP2022 06:29:32 32.9N 115.6W Ml=2.2 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 04:43:30 33.7N 115.9W ML=2.7 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 05:04:41 33.8N 115.9W ML=2.6 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 05:18:55 33.8N 115.9W Ml=2.1 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 05:30:05 33.8N 115.9W Ml=2.2 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 06:55:47 33.8N 115.9W ML=3.3 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 06:55:47 33.8N 115.9W ML=3.5 ANSS SOUTHERN CALIFORNIA
P: 13SEP2022 146640 32.9N 115.6W 2.5-4.4 BAAAA So. California
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.0 in the Taiwan September 17, 2022, where promoted seismicity is considered likely.
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: 17SEP2022 23:33:30 26.4N 96.7E mb=4.2 EMSC MYANMAR
P: 17SEP2022 146658 30.0N 90.0E 3.8-5.3 ACCAA Xizang
O: 17SEP2022 17:43:15 42.2N 81.1E mb=4.4 EMSC NORTHERN XINJIANG, CHINA
P: 7SEP2022 146415 42.0N 82.0E 4.0-5.4 CAAAA Kirgizstan/Xinjiang
O: 17SEP2022 20:18:00 55.8N 162.2E mb=4.4 EMSC NEAR EAST COAST OF KAMCHATKA
P: 16SEP2022 146713 56.0N 163.0E 4.0-5.6 AAAAA Komandorsky Isl
O: 18SEP2022 06:57:33 23.0N 121.3E mb=5.1 EMSC TAIWAN REGION
O: 17SEP2022 13:55:43 23.1N 121.2E mb=4.9 EMSC TAIWAN
O: 17SEP2022 14:12:51 23.1N 121.2E ML=4.1 EMSC TAIWAN
O: 17SEP2022 14:35:15 23.1N 121.2E Mw=5.1 EMSC TAIWAN
O: 17SEP2022 14:45:29 23.1N 121.3E Mw=5.5 EMSC TAIWAN
O: 17SEP2022 15:00:11 23.1N 121.2E mb=4.7 EMSC TAIWAN
O: 17SEP2022 15:03:19 23.1N 121.2E ML=4.2 EMSC TAIWAN
O: 17SEP2022 15:24:34 23.1N 121.2E ML=4.0 EMSC TAIWAN
O: 17SEP2022 15:33:06 23.1N 121.2E ML=4.3 EMSC TAIWAN
O: 17SEP2022 16:18:47 23.1N 121.2E ML=4.1 EMSC TAIWAN
O: 17SEP2022 18:03:29 23.1N 121.4E Mw=4.6 EMSC TAIWAN
O: 17SEP2022 21:41:43 23.1N 121.3E ML=4.1 EMSC TAIWAN
O: 17SEP2022 22:05:52 23.1N 121.2E ML=4.3 EMSC TAIWAN
O: 18SEP2022 01:52:34 23.1N 121.3E mb=4.7 EMSC TAIWAN
O: 18SEP2022 02:00:08 23.1N 121.4E mb=4.6 EMSC TAIWAN
O: 18SEP2022 03:49:21 23.1N 121.3E ML=4.5 EMSC TAIWAN
O: 18SEP2022 04:07:41 23.1N 121.3E mb=4.1 EMSC TAIWAN
O: 18SEP2022 05:54:40 23.1N 121.3E mb=4.5 EMSC TAIWAN
O: 18SEP2022 06:48:48 23.1N 121.2E ML=4.0 EMSC TAIWAN
O: 17SEP2022 13:41:19 23.2N 121.4E Mw=6.5 EMSC TAIWAN
O: 18SEP2022 05:19:19 23.2N 121.3E mb=5.5 EMSC TAIWAN
O: 18SEP2022 06:32:02 23.2N 121.4E Mw=5.2 EMSC TAIWAN
O: 18SEP2022 06:33:25 23.2N 121.3E ML=4.0 EMSC TAIWAN
O: 18SEP2022 06:44:17 23.2N 121.4E Mw=6.9 EMSC TAIWAN
O: 18SEP2022 07:00:17 23.5N 121.3E ML=4.1 EMSC TAIWAN
O: 18SEP2022 07:05:18 23.5N 121.3E ML=4.0 EMSC TAIWAN
O: 17SEP2022 19:25:56 24.0N 122.8E mb=4.4 EMSC TAIWAN REGION
O: 18SEP2022 04:10:52 22.7N 121.1E mb=4.4 EMSC TAIWAN REGION
O: 18SEP2022 06:44:15 23.1N 121.2E ML=6.8 TAI Hualien, Taiwan
O: 17SEP2022 13:41:19 23.1N 121.2E ML=6.4 TAI Hualien, Taiwan
P: 20SEP2022 146597 23.0N 121.0E 4.0-5.5 AAAAA Taiwan
P: 15SEP2022 146597 24.0N 121.0E 4.0-5.4 AAAAA Taiwan
CWB reported the M 6.4 was felt with intensity VI in Taitung, V in Hualien and Kaohsiung, IV in Chiayi, Pingtung, Nantou, Yunlin, Chiayi, III in Maoli, Hsinchu, Yilan, Taichung, Changhua, Taipei, and II in Penghu Counties, Taiwan.
CWB reported the M 6.9 was felt with intensity VI in Taitung and Hualien, V in Nantou, Kaohsiung, IV in Yilan, Taichung, Changhua, Yunlin, Taipei, Chiayi, Mialoi, Tainan, Hsinchu, Pingtung and III in Taoyuan, Penghu and I in Lienchiang Counties, Taiwan.
INDONESIA AND PHILIPPINES
O: 17SEP2022 14:26:52 0.1S 123.4E ML=4.2 EMSC SULAWESI, INDONESIA
P: 19SEP2022 146533 0.0N 123.0E 4.0-5.6 AAAAA Mindanao, Philippines
O: 17SEP2022 15:51:07 2.9S 137.7E ML=4.4 EMSC PAPUA, INDONESIA
P: 15SEP2022 146548 3.0S 138.0E 4.0-5.4 AAAAA Papua New Guinea
O: 17SEP2022 23:29:49 4.8S 154.0E mb=4.8 EMSC NEW IRELAND REGION, P.N.G.
P: 12SEP2022 146543 4.0S 153.0E 4.0-5.5 BAAAA New Britain
O: 17SEP2022 20:39:41 6.4N 124.0E ML=4.3 EMSC MINDANAO, PHILIPPINES
P: 12SEP2022 146533 6.0N 125.0E 4.0-5.4 BAAAA Mindanao, Philippines
O: 17SEP2022 12:32:33 7.7S 117.4E mb=4.4 EMSC BALI SEA
P: 13SEP2022 146555 8.0S 117.0E 4.0-5.4 BAAAA Sumbawa Island area
O: 17SEP2022 18:31:25 18.5N 146.6E mb=4.9 EMSC PAGAN REG., N. MARIANA ISLANDS
P: 15SEP2022 146575 18.0N 145.0E 4.0-5.4 AABAA No. Marianas
No significant (M>=5) or unusual earthquakes were reported in Indonesia or the Philippines today.
CENTRAL AND SOUTH AMERICA
O: 17SEP2022 21:09:40 5.2S 73.6W ML=4.4 EMSC PERU-BRAZIL BORDER REGION
P: 15SEP2022 146743 10.0S 75.0W 3.5-5.0 ACBAA Brazil
O: 17SEP2022 13:42:28 12.0N 86.9W mb=4.3 EMSC NICARAGUA
P: 17SEP2022 146572 12.0N 86.0W 3.5-5.3 AAAAA Nicaragua
O: 17SEP2022 09:46:09 14.6N 84.6W ML=4.0 EMSC NICARAGUA
P: 17SEP2022 146572 12.0N 86.0W 3.5-5.3 ACBAA Nicaragua
O: 17SEP2022 07:54:40 15.4N 92.5W ML=4.2 EMSC CHIAPAS, MEXICO
O: 17SEP2022 18:27:49 14.7N 92.5W mb=4.0 EMSC OFFSHORE CHIAPAS, MEXICO
P: 18SEP2022 146560 14.0N 93.0W 3.5-5.1 AAAAA Chiapas, Mexico
P: 18SEP2022 146564 14.0N 92.0W 3.5-5.3 AAAAA Guatemala
O: 17SEP2022 07:22:31 15.7N 96.3W ML=4.0 EMSC OAXACA, MEXICO
P: 18SEP2022 146577 16.0N 96.0W 3.5-5.1 AAAAA Oaxaca, Mexico
O: 17SEP2022 18:21:49 16.3S 72.2W mb=4.1 EMSC NEAR COAST OF SOUTHERN PERU
P: 17SEP2022 146749 16.0S 74.0W 4.0-5.6 AAAAA So. Peru/Bolivia
O: 17SEP2022 08:51:46 16.5N 95.1W ML=4.0 EMSC OAXACA, MEXICO
P: 18SEP2022 146577 16.0N 96.0W 3.5-5.1 AAAAA Oaxaca, Mexico
O: 17SEP2022 10:50:46 18.5S 69.9W mb=4.6 EMSC TARAPACA, CHILE
P: 17SEP2022 146749 17.0S 69.0W 4.0-5.6 ABAAA So. Peru/Bolivia
O: 17SEP2022 15:05:02 20.2S 69.2W ML=4.2 EMSC TARAPACA, CHILE
O: 17SEP2022 13:42:40 20.2S 69.3W Mw=4.7 EMSC TARAPACA, CHILE
O: 17SEP2022 13:42 20.2S 69.2W mb=4.7 GUC Tarapaca at El Loa, Huara, Iqu
O: 17SEP2022 13:42 20.2S 69.2W mb=5.1 ANSS Tarapaca at El Loa, Huara, Iqu
P: 15SEP2022 146760 22.0S 69.0W 4.0-5.6 AAAAA Coast No. Chile
GUC reported this earthquake was felt with intensity IV in Tarapaca at El Loa, Huara, Iquique, III in Camina, La Tirana, Pica, Pozo Almonte and in Arica with III in Arica, Cuya and II in San Miguel de Azapa, Chile.
NEIC reported these earthquakes of M 5.1 and 4.2 in Northern Chile were felt with intensity II-III in the area(s) of Northern Chile in Iquique (IV), and Arica, Tarapaca.
O: 17SEP2022 21:47:59 18.9N 65.2W Md=3.3 EMSC PUERTO RICO REGION
O: 17SEP2022 07:37:06 19.2N 64.9W Md=3.4 EMSC VIRGIN ISLANDS REGION
O: 18SEP2022 05:59:28 18.7N 67.0W Md=3.0 EMSC PUERTO RICO REGION
P: 17SEP2022 146579 18.0N 67.0W 3.4-5.1 AAAAA Puerto Rico
O: 17SEP2022 15:05:02 20.2S 69.2W ML=4.2 EMSC TARAPACA, CHILE
O: 17SEP2022 13:42:40 20.2S 69.3W Mw=4.7 EMSC TARAPACA, CHILE
O: 17SEP2022 13:42 20.2S 69.2W mb=4.7 GUC Tarapaca at El Loa, Huara, Iqu
P: 15SEP2022 146760 22.0S 69.0W 4.0-5.6 AAAAA Coast No. Chile
AFRICA AND EUROPE
O: 17SEP2022 18:41:41 35.6N 25.8E mb=4.3 EMSC CRETE, GREECE
P: 15SEP2022 146599 35.0N 26.0E 3.0-4.6 AAAAA Aegean Sea
No significant (M>=5) or unusual earthquakes were reported in Europe today.
SOUTHWEST PACIFIC
O: 17SEP2022 08:32:49 21.2S 170.1E mb=4.3 EMSC SOUTHEAST OF LOYALTY ISLANDS
P: 14SEP2022 146761 22.0S 172.0E 4.0-5.4 BBBAA Loyalty Islands
OCEAN RIDGES
O: 18SEP2022 00:26:38 20.7S 11.7W mb=4.9 EMSC SOUTHERN MID-ATLANTIC RIDGE
P: 17SEP2022 146766 20.0S 12.0W 4.0-5.8 AAAAA So. Mid-Atlantic Ridge
O: 18SEP2022 02:25:00 11.5S 66.4E mb=4.6 EMSC MID-INDIAN RIDGE
P: 8SEP2022 146488 15.0S 67.0E 4.0-5.5 AAAAA So. Indian Ocean
P: 19SEP2022 146747 17.0S 67.0E 4.0-5.6 AAAAA So. Indian Ocean
No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.
ZEALANDIA AND AUSTRALIA REGION
O: 17SEP2022 14:47:08 18.1S 120.1E ML=3.9 EMSC WESTERN AUSTRALIA
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: 17SEP2022 18:25:31 26.2N 125.9E mb=4.4 EMSC NORTHEAST OF TAIWAN
O: 18SEP2022 06:04:42 26.4N 126.1E mb=4.5 EMSC RYUKYU ISLANDS, JAPAN
O: 17SEP2022 10:29:30 26.5N 126.0E ML=4.8 EMSC RYUKYU ISLANDS, JAPAN
O: 18SEP2022 05:59:53 26.4N 126.0E mb=4.9 EMSC NORTHEAST OF TAIWAN
P: 20SEP2022 146594 27.0N 125.0E 4.0-5.4 AAAAA Ryukyu Islands
O: 18SEP2022 02:56:10 24.9N 123.3E mb=4.3 EMSC SOUTHWESTERN RYUKYU ISL., JAPA
P: 20SEP2022 146594 25.0N 123.0E 4.0-5.4 AAAAA Ryukyu Islands
O: 17SEP2022 13:15:57 30.0N 139.1E mb=4.3 EMSC IZU ISLANDS, JAPAN REGION
P: 13SEP2022 146634 30.0N 142.0E 4.0-5.5 BABAA Off East Coast Honshu
O: 18SEP2022 02:09:48 35.8N 140.7E mb=4.8 EMSC NEAR EAST COAST OF HONSHU, JAP
P: 17SEP2022 146635 35.0N 140.0E 4.0-5.4 AAAAA Off East Coast Honshu
NEIC reported this earthquake of M 4.8 east of Tokyo, Honshu, Japan was felt with intensity II-III in the area(s) of Tokyo, Honshu, Japan in Tokyo, Chiba and Kanagawa Prefectures.
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 17SEP2022 09:10:20 31.5N 115.7W ML=3.3 EMSC BAJA CALIFORNIA, MEXICO
O: 17SEP2022 09:30:29 31.2N 115.7W ML=3.1 EMSC BAJA CALIFORNIA, MEXICO
O: 18SEP2022 06:29:32 32.9N 115.6W Ml=2.2 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 04:43:30 33.7N 115.9W ML=2.7 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 05:04:41 33.8N 115.9W ML=2.6 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 05:18:55 33.8N 115.9W Ml=2.1 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 05:30:05 33.8N 115.9W Ml=2.2 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 06:55:47 33.8N 115.9W ML=3.3 EMSC SOUTHERN CALIFORNIA
O: 18SEP2022 06:55:47 33.8N 115.9W ML=3.5 ANSS SOUTHERN CALIFORNIA
P: 13SEP2022 146640 32.9N 115.6W 2.5-4.4 BAAAA So. California
NEIC reported this earthquake of M 3.5 in Southern California was felt with intensity II-III in the area(s) of Southern California in Coachella, Indio, Mecca, Palm Desert, Cathedral City, Joshua Tree, Idyllwild.
O: 17SEP2022 08:09:21 35.9N 117.7W Ml=2.6 EMSC CENTRAL CALIFORNIA
O: 18SEP2022 01:03:01 35.9N 118.0W ML=2.7 EMSC CENTRAL CALIFORNIA
P: 18SEP2022 146601 36.2N 117.9W 2.5-4.5 AAAAA California/Nevada area
O: 18SEP2022 02:35:43 37.6N 119.8W Md=2.9 EMSC CENTRAL CALIFORNIA
P: 19SEP2022 146603 37.5N 118.6W 2.5-4.4 AAAAA California/Nevada area
P: 19SEP2022 146605 38.8N 119.6W 2.5-4.8 ABAAA California/Nevada area
NEIC reported this earthquake of M 2.9 in Central California was felt with intensity II-III in the area(s) of Central California in Mariposa and Midpines and Yosemite National Park.
O: 17SEP2022 20:31:58 40.4N 124.6W ML=2.4 EMSC OFFSHORE NORTHERN CALIFORNIA
O: 17SEP2022 20:44:16 40.4N 124.5W ML=2.8 EMSC OFFSHORE NORTHERN CALIFORNIA
P: 15SEP2022 146686 40.2N 124.2W 2.5-4.8 AAAAA Off Coast of No. Calif
ALASKA
O: 17SEP2022 21:28:21 51.7N 178.1W ml=3.6 EMSC ANDREANOF ISLANDS, ALEUTIAN IS
P: 14SEP2022 146705 51.0N 177.1W 3.5-5.2 BAAAA Andreanoff Isls, Aleutians
O: 17SEP2022 09:09:41 55.7N 154.9W ML=3.5 EMSC SOUTH OF ALASKA
P: 14SEP2022 146704 56.8N 157.7W 3.5-4.9 BBBAA Alaska Peninsula
O: 17SEP2022 13:43:25 56.3N 149.3W ML=3.4 EMSC GULF OF ALASKA
P: 15SEP2022 146736 55.9N 149.8W 3.0-5.2 AAAAA Northern Alaska
O: 17SEP2022 22:08:34 59.6N 153.0W ML=3.7 EMSC SOUTHERN ALASKA
P: 14SEP2022 146729 60.0N 153.5W 3.2-5.3 BAAAA Central Alaska
O: 17SEP2022 14:03:06 69.6N 144.3W ML=3.1 EMSC NORTHERN ALASKA
PACIFIC NORTHWESTERN U.S./WESTERN CANADA
O: 17SEP2022 09:04:37 44.3N 124.3W Ml=2.0 EMSC OFFSHORE OREGON
O: 17SEP2022 09:10:30 48.8N 122.5W Ml=2.2 EMSC WASHINGTON
P: 7SEP2022 146439 48.0N 123.0W 2.0-3.9 CAAAA Washington state, U.S.
ROCKY MOUNTAINS REGION
O: 17SEP2022 07:34:10 31.6N 104.3W ML=2.2 EMSC WESTERN TEXAS
O: 17SEP2022 22:16:15 31.7N 104.3W ML=2.4 EMSC WESTERN TEXAS
O: 17SEP2022 19:32:57 31.9N 103.4W ML=2.3 EMSC WESTERN TEXAS
P: 17SEP2022 146639 31.6N 103.6W 2.0-4.1 AAAAA SW U.S.A
O: 17SEP2022 08:58:40 44.4N 115.2W ML=2.7 EMSC SOUTHERN IDAHO
P: 18SEP2022 146675 44.4N 115.2W 2.0-4.4 AAAAA Montana/Idaho
EASTERN U.S./CANADA
O: 17SEP2022 08:02:39 36.7N 97.7W ML=2.4 EMSC OKLAHOMA
P: 17SEP2022 146652 36.0N 97.0W 2.0-4.3 AAAAA Southern Plains
HAWAII
O: 17SEP2022 15:19:31 19.3N 155.2W ML=3.3 EMSC ISLAND OF HAWAII, HAWAII
O: 17SEP2022 11:39:21 19.3N 155.2W ML=3.4 EMSC ISLAND OF HAWAII, HAWAII
P: 17SEP2022 146566 19.3N 155.1W 3.0-4.4 AAAAA Hawaii
MODERATE QUAKES IN LOYALTY, KERMADEC ISLANDS
EARTHQUAKE SUMMARY FOR SEPTEMBER 16, 2022
The strongest seismicity in the world today continued near the geomagnetic equator in the South Pacific where events of M 5.7 and 5.6 hit the Kermadec Islands and the Loyalty Islands. These events were not reported felt in these remote regions
and are aftershocks of recent larger quakes in the area. Those in the Loyalty Islands follow an M 7.0 two days ago. Other significant activity occurred in conjunction with major ocean storms. Typhoon Merbok made landfall in Alaska today with considerable wind damage and flooding. This was accompanied by an M 4.7 at the antipode south of Africa and by an M 3.9 in southern Alaska. Typhoon Muifa also continued to promote regional seismicity in China, Taiwan and southern Ryukyu Islands and may continue to be seismo-effective for another day or two in this area.
The M 5.7 in the central Kermadec Islands of New Zealand is the strongest within about 200 km of that epicenter since an M 5.7 on August 5, 2022. At the time this summary noted in this regard:
"The strongest of these events was an M 5.7 in the central Kermadec Islands. This event was not reported felt in this remote area. It is the strongest in the Central Kermadec Islands within about 200 km of this epicenter since an
M 5.8 on March 20, 2022. ... likely aftershocks of an M 6.6 of March 2, 2022." (August 5, 2022)
Today's event occurred within minutes of local solar noon and was probably promoted by high tidal stresses which maximize at this time. Forecast 146782 had expected today's activity within about 100 km was likely within about 100 km around September 17.
O: 17SEP2022 00:06:55 30.2S 177.8W Mw=5.7 EMSC KERMADEC ISLANDS, NEW ZEALAND
P: 17SEP2022 146782 31.0S 177.0W 4.0-5.4 AAAAA So. Kermadec Islands
The M 5.6 in the Loyalty Islands today is the first significant aftershock activity in the area following the M 7.0 of September 14. It occurred within minutes of local solar noon and may have been promoted by high tidal stresses which maximize near this hour. Like the event in the Kermadec Islands, this earthquake of M 5.6 occurred within minutes of local solar noon and was probably promoted by strong tidal stresses. Forecast 146761 had expected this event within about 100 km
was likely around September 16.
O: 16SEP2022 23:58:19 22.2S 171.0E Mw=5.6 EMSC SOUTHEAST OF LOYALTY ISLANDS
O: 17SEP2022 02:59:15 22.8S 172.8E mb=4.5 EMSC SOUTHEAST OF LOYALTY ISLANDS
P: 16SEP2022 146761 23.0S 172.0E 4.0-5.4 AAAAA Loyalty Islands
Moderate earthquakes occurred in north-eastern China today with M 3.9 and 4.4 in the region of Xinjiang. This summary had suggested that enhanced seismicity was likely in this area at this time with the landfall of Typhoon Muifa as noted in previous issues:
"Typhoon Muifa (14W) continued today over eastern China with winds up to 35 kts. Extensive flooding and damage occurred as Muifa passed over the heavily populated eastern coast of China today. It is expected to track to the northwest over the next several days and may help promote seismicity in the region of eastern China in the next several days." (September 16-17, 2022)
Other areas still susceptible to the stresses wrought on the area by Muifa where a moderate to large earthquake could still occur are Taiwan and the Ryukyu Islands.
"Typhoon Muifa (14W) continued today over eastern China with winds up to 55 kts. It is expected to track to the northwest over the next several days and may help promote seismicity in the region of Taiwan, China and the Ryukyu Islands in the next several days." (September 14-16, 2022)
"Typhoon Muifa (14W) continued today over Taiwan with winds up to 110 kts. It is expected to track to the northwest over the next several days and may help promote seismicity in the region of Taiwan and the Ryukyu Islands in the next several days." (September 14, 2022)
The last earthquake of equal or greater magnitude then M 4.2 within about 250 km of today's event in Northern Xinjiang, China occurred with M 4.4 on January 4, 2021. Forecast 146415 had expected this activity in Xinjiang was likely in early
to mid-September within about 100 km of this epicenter. This activity is located at 103 degrees from the M 7.0 in the Loyalty Islands of September 14 and at 101 degrees from the M 6.9 in the central Atlantic of September 4, 2022 and may have been promoted by energy from those sources. An M6.2 solar flare occurred while Taiwan was at local solar midnight and may tend to further enhance seismicity in that region, recently stressed by Typhoon Muifa.
O: 17SEP2022 04:22:29 42.5N 81.2E mb=4.4 EMSC NORTHERN XINJIANG, CHINA
O: 16SEP2022 09:38:24 42.4N 81.1E mb=3.8 EMSC NORTHERN XINJIANG, CHINA
P: 7SEP2022 146415 42.0N 82.0E 4.0-5.4 CAAAA Kirgizstan/Xinjiang
The strongest earthquake in the U.S. or Canada today was an M 3.9 in Southern Alaska. Today's event was associated with a very strong tropical cyclone as noted in the previous issue of this summary:
"This summary had expected elevated seismicity in this region was likely at this time as Typhoon
Merbok was approaching the area. This is the strongest typhoon to impact
the Aleutians in nearly a decade." (September 16, 2022)
"Typhoon Merbok (TD 15W) continued today in the North Pacific Ocean with winds up to 80 kts. It is expected to track to the northeast over the next several days reaching the Aleutians around September 16 as a typhoon. A moderate to strong earthquake is possible in the central Aleutians as this storm passes through." (September 14-15, 2022)
and
"Typhoon Merbok (TD 15W) continued today in the North Pacific Ocean with winds up to 80 kts. It is expected to track to the northeast over the next several days reaching the Aleutians around September 18 as a typhoon. This is one of the strongest tropical storms to threaten the Aleutians in the last decade. A moderate to strong earthquake is possible in the central Aleutians as this storm passes through." (September 15-16, 2022)
Forecast 146729 had expected today's event within about 40 km was likely around September 14.
O: 17SEP2022 02:44:13 59.7N 153.2W ML=3.9 EMSC SOUTHERN ALASKA
P: 14SEP2022 146729 60.0N 153.5W 3.2-5.3 BAAAA Central Alaska
An M 5.2 near the antipode of this event in Southern Alaska occurred about three hours later in the region South of Africa. It may have been promoted by antipodal focusing of surface energy following the landfall in Alaska today of Tropical Cyclone Merbok. Forecast 146520 had expected regional seismic enhancement in this region was likely around September 10.
O: 17SEP2022 05:25:54 52.8S 25.8E Mw=5.2 EMSC SOUTH OF AFRICA
P: 10SEP2022 146520 53.0S 19.0E 4.0-5.6 CACAA Atlantic-Indian Ridge
A moderate earthquake also shook areas of east-central California and western Nevada with M 3.5-3.6. The last aftershock of the M 6.0 on July 8, 2021 in this area of M>=3.6 occurred on August 8, 2022 with M 4.5. This summary noted that event at the time as:
"The M 4.4-4.6 on the border between Central California and Nevada today occurred within minutes of local solar noon and was probably promoted by high tidal/geomagnetic effects which maximize near this hour as well. NEIC reported it was felt with intensity II-III in California at Topaz, Coleville, Gardnerville, Markleeville, Bridgeport and in Nevada at Wellington, Smith, Gardnerville, Minden among others. NEIC reported aftershocks of M 2.5-3.5 in Central California were felt with intensity II-III in the area(s) of in Carson City, Nevada. The M 4.4-4.6 is the strongest aftershock of the M 6.0 which shook the area on July 8, 2021 since that date." (August 9, 2022)
NEIC reported this earthquake of M 3.7 in Central California was felt with intensity II-III in the area(s) of Central California in Coleville Wellington, and Arnold with IV and lesser shaking in Topaz, Murphys. Coulterville, Colfax and in Nevada at Minden and Glenbrook. Forecast 146605 had expected this earthquake was likely within about 10 km of this epicenter around September 15.
O: 17SEP2022 00:41:16 38.5N 119.5W Md=2.2 EMSC CENTRAL CALIFORNIA
O: 17SEP2022 05:49:31 38.5N 119.5W Md=2.2 EMSC CENTRAL CALIFORNIA
O: 16SEP2022 16:12:42 38.5N 119.5W Mw=3.6 EMSC CENTRAL CALIFORNIA
P: 15SEP2022 146605 38.6N 119.5W 2.5-4.8 AAAAA California/Nevada area
Earthquakes Canada (ECAN) updated the magnitude of the earthquake near Lewiston, Maine from M 2.3 to M 2.7 today. This summary had noted this event in the previous issue of this summary as:
"A light earthquake of M 2.3 was recorded in eastern Maine today. It was not reported felt in this area. The last earthquake within about 75 km of this epicenter in Maine with significantly larger magnitude was an M 4.0+ event on October 16, 2012.
At the time this summary noted in this regard: (September 15, 2022):
"A moderate earthquake of M 4.0-4.6 centered about 25 km west of Portland, Maine in the Hollis area was widely felt in all the states of the northeastern U.S. today. Reports of intensity III-IV were made to the USGS from New Jersey, New York, Vermont, New Hampshire, Connecticut, Rhode Island, and Maine. This may be the strongest earthquake ever recorded in southeastern Maine. The only event of similar magnitude and intensity in the region according to the catalog
"Seismicity of the United States" was an M 4.4-4.7 which occurred on April 26, 1957. It was felt with intensity VI like today's event. Minor damage was reported in Cumberland County at Portland and Westbrook. Windows and dishes broke in Westbrook and plaster and walls cracked and merchandise fell from shelves in Portland. The epicenter of today's earthquake is about 20 km to the west of this earlier event. Other slightly smaller events in the area of southeastern Maine occurred on August 21, 1918 with M 4.2 new Norway, Maine. Water levels in Lake Sebago temporarily dropped 10 cm in this event. An earthquake on July 15, 1905 was centered in Gardiner, near Augusta, Maine and did some damage to chimneys. An earthquake on December 23, 1857 near Lewiston was also felt with intensity VI but was not assigned a magnitude. It was felt throughout much of southeastern Maine with damage in the Portland region. The earthquake was probably felt lightly in the area of the second U.S. Presidential Debate in New York which occurred several hours later." (October 16, 2012)
Forecast 146672 had expected this event within about 50 km of this epicenter was likely around September 16.
O: 16SEP2022 02:29:26 44.3N 70.7W MB=2.7 ECAN of Lewiston, ME
P: 16SEP2022 146672 44.0N 70.0W 2.0-3.9 AAAAA Maine
An unusual M 3.4-3.8 also shook the Hawaiian Island of Maui today. The only earthquake
of M>=3.4 in the Maui region in the past two years occurred as an M 3.4
on June 21, 2021 and was noted in this summary at the time
as:
"An unusual M 3.4 hit the Maui region of Hawaii today. NEIC reported this earthquake of M 3.3 in Maui, Hawaii was felt with intensity II-III in the area(s) of Maui, Hawaii at Hawi, Waikoloa, Kamuela, Kailua Kona, Honokaa, Kula and Captain Cook.
This is the strongest earthquake in Maui since a M 3.6-3.8 on September 5, 2020." (June 21-22, 2021)
Like today's event that of June, 2021 was accompanied by an M 6.0 in the central Kermadec Islands of New Zealand near the M 5.7 in that area today. Forecast 146587 had expected today's event in Maui was likely within about
50 km around September 18.
NEIC reported this earthquake of M 3.8 in Maui, Hawai was felt with intensity II-III in the area(s) of Maui, Hawaii in Lanai City, Kihei, Lahaina, Kula, Wailuku, Makawao, Kaunakakai, Kualapuu and Kamuela. This epicenter is at the seventh node (52 degrees) from the M 7.0 in the Loyalty Islands of September 14, 2022 and may have been promoted by energy from that source.
O: 16SEP2022 16:19:55 20.3N 156.5W ML=3.4 EMSC MAUI REGION, HAWAII
O: 16SEP2022 16:19:55 20.3N 156.5W ML=3.8 ANSS MAUI REGION, HAWAII
P: 18SEP2022 146587 20.1N 156.1W 4.0-5.4 AAAAA Hawaii area
Two unusually large solar flares occurred today. An M6.2 (#2180) and an M7.9 (#2110) were the some of the largest M-class flares in the past year. The largest were an M9.6 on March 31, 2021; an M 9.6 on April 21, 2022 and an M 8.6 on August 29, 2022. Flare 2180 occurred minutes before the M 3.8 in Maui, Hawaii and probably helped trigger that event through SFE. Large solar flares often are immediately followed by significant seismic events on the earth. The M6.2 flare occurred while Taiwan was at local solar midnight and may tend to further enhance seismicity in that region, recently stressed by Typhoon Muifa.
Flare # START MAX END CLASS DATE Flux (Jm-2)
#-------------------------------------------------------------------------------
2110 0944 0949 0956 M7.9 (September 16, 2022) 3.0E-02
2180 1549 1559 1612 M6.2 (September 16, 2022) 5.7E-02
Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.0 in the Loyalty Islands September 14, 2022, where promoted seismicity is considered likely.
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: 17SEP2022 04:22:29 42.5N 81.2E mb=4.4 EMSC NORTHERN XINJIANG, CHINA
O: 16SEP2022 09:38:24 42.4N 81.1E mb=3.8 EMSC NORTHERN XINJIANG, CHINA
P: 7SEP2022 146415 42.0N 82.0E 4.0-5.4 CAAAA Kirgizstan/Xinjiang
INDONESIA AND PHILIPPINES
O: 16SEP2022 08:17:02 0.0N 124.5E mb=4.5 EMSC MINAHASA, SULAWESI, INDONESIA
P: 19SEP2022 146533 0.0N 123.0E 4.0-5.6 BABAA Mindanao, Philippines
O: 17SEP2022 02:17:21 2.7S 129.7E ML=4.2 EMSC SERAM, INDONESIA
P: 17SEP2022 146539 3.0S 128.0E 4.0-5.4 AABAA Ceram area
O: 16SEP2022 12:35:18 2.7S 138.9E ML=4.2 EMSC PAPUA, INDONESIA
P: 15SEP2022 146548 3.0S 138.0E 4.0-5.4 AAAAA Papua New Guinea
O: 16SEP2022 11:45:34 3.2N 126.1E mb=4.6 EMSC KEPULAUAN TALAUD, INDONESIA
P: 10SEP2022 146284 4.0N 127.0E 4.0-5.4 CAAAA Halmahera
O: 16SEP2022 16:18:31 5.5S 148.1E Mw=5.1 EMSC NEW BRITAIN REGION, P.N.G.
O: 16SEP2022 15:39:49 6.0S 145.6E mb=4.9 EMSC EASTERN NEW GUINEA REG., P.N.G
P: 18SEP2022 146544 5.0S 146.0E 4.0-5.4 AAAAA New Ireland
NEIC reported this earthquake of M 5.1 in New Guinea was felt with intensity II-III in the area(s) of New Guinea in Mount Hagen, Western Highlands.
O: 17SEP2022 06:25:01 7.1S 105.2E mb=4.9 EMSC JAVA, INDONESIA
P: 10SEP2022 146303 7.0S 105.0E 4.0-5.4 CAAAA So. of Java
CENTRAL AND SOUTH AMERICA
O: 17SEP2022 06:12:44 7.4N 73.7W mb=4.3 EMSC NORTHERN COLOMBIA
P: 9SEP2022 146281 7.0N 73.0W 4.0-5.4 CAAAA Colombia
O: 16SEP2022 20:52:51 14.9N 94.3W ML=4.2 EMSC OFF COAST OF CHIAPAS, MEXICO
O: 16SEP2022 14:12:18 14.9N 94.2W ML=4.0 EMSC OFF COAST OF CHIAPAS, MEXICO
P: 18SEP2022 146560 14.0N 93.0W 3.5-5.1 AAAAA Chiapas, Mexico
O: 16SEP2022 18:55:34 15.2S 76.0W mb=4.5 EMSC OFF COAST OF CENTRAL PERU
P: 14SEP2022 146744 14.0S 76.0W 4.0-5.4 ABAAA Central Peru
NEIC reported this earthquake of M 4.5 in Southern Peru was felt with intensity II-III in the area(s) of Southern Peru in Vista Alegre, Ica.
O: 16SEP2022 19:32:24 16.8N 94.5W ML=4.0 EMSC OAXACA, MEXICO
P: 9SEP2022 146311 17.0N 94.0W 3.5-5.2 CAAAA Chiapas, Mexico
P: 15SEP2022 146560 16.0N 93.0W 3.5-5.1 AABAA Chiapas, Mexico
O: 16SEP2022 19:45:55 18.2N 103.4W ML=4.1 EMSC OFFSHORE MICHOACAN, MEXICO
P: 13SEP2022 146571 19.0N 105.0W 3.5-5.3 BAAAA Michoacan, Mexico
O: 16SEP2022 15:18:08 18.9N 100.2W mb=4.1 EMSC ESTADO DE MEXICO, MEXICO
P: 19SEP2022 146570 19.0N 101.0W 3.5-5.5 BAAAA Michoacan, Mexico
P: 19SEP2022 146578 18.0N 99.0W 3.5-5.4 BAAAA Oaxaca, Mexico
NEIC reported this earthquake of M 4.1 in Mexico was felt with intensity II-III in the area(s) of Mexico in Tlalnepantla.
O: 17SEP2022 03:53:39 21.1S 69.0W mb=4.2 EMSC TARAPACA, CHILE
O: 17SEP2022 13:42 20.2S 69.2W mb=4.7 GUC Tarapaca at El Loa, Huara, Iqu
O: 16SEP2022 19:24:24 22.2S 67.8W mb=4.1 EMSC POTOSI, BOLIVIA
P: 15SEP2022 146760 22.0S 69.0W 4.0-5.6 AAAAA Coast No. Chile
GUC reported this earthquake was felt with intensity IV in Tarapaca at El Loa, Huara, Iquique, III in Camina, La Tirana, Pica, Pozo Almonte and in Arica with III in Arica, Cuya and II in San Miguel de Azapa, Chile.
NEIC reported this earthquake of M 4.2 in Northern Chile was felt with intensity II-III in the area(s) of Northern Chile in Iquique, Tarapaca.
O: 17SEP2022 00:57:23 23.4S 114.9W mb=4.9 EMSC EASTER ISLAND REGION
P: 18SEP2022 146764 24.0S 115.0W 4.0-5.5 AAAAA So. East Pacific Rise
O: 16SEP2022 08:08:25 27.4N 111.3W ML=3.4 EMSC GULF OF CALIFORNIA
P: 17SEP2022 146586 28.0N 112.0W 3.5-5.1 AAAAA Gulf of California
AFRICA AND EUROPE
O: 16SEP2022 12:26:12 37.8N 2.1W ML=4.0 EMSC SPAIN
P: 10SEP2022 146369 37.0N 3.0W 3.5-5.2 CAAAA Morocco/Spain
P: 17SEP2022 146622 37.0N 4.0W 3.5-5.1 AABAA Morocco/Spain
O: 16SEP2022 12:58:09 37.4N 21.3E mb=4.5 EMSC SOUTHERN GREECE
O: 16SEP2022 14:10:48 38.2N 21.6E ML=4.0 EMSC GREECE
P: 16SEP2022 146626 38.0N 21.0E 3.0-4.5 AAAAA No. Greece
NEIC reported this earthquake of M 4.5 in Southern Greece was felt with intensity II-III in the area(s) of Southern Greece in Lithakia, Zakinthos and Ipsos, Kentrkik, Ellada.
O: 16SEP2022 20:30:35 39.4N 40.6E Mw=4.8 EMSC EASTERN TURKEY
P: 17SEP2022 146654 39.0N 40.0E 3.5-4.9 AAAAA Turkey
NEIC reported this earthquake of M 4.8 in Eastern Turkey was felt with intensity II-III in the area(s) of Eastern Turkey in Bingol at Yedisu, Solhan, Bingol (IV) and in Erzurum.
O: 17SEP2022 03:27:32 66.6N 17.9W ML=3.0 EMSC ICELAND REGION
O: 16SEP2022 22:18:06 66.5N 17.6W ML=3.4 EMSC ICELAND REGION
P: 14SEP2022 146734 66.0N 17.0W 3.0-4.5 AAAAA Iceland area
SOUTHWEST PACIFIC
O: 16SEP2022 15:50:51 10.8S 162.4E mb=4.5 EMSC SOLOMON ISLANDS
P: 12SEP2022 146553 9.0S 158.0E 4.0-5.4 BBCAA Solomon Islands
O: 16SEP2022 11:16:31 17.4S 167.5E mb=4.6 EMSC VANUATU
P: 16SEP2022 146755 18.0S 168.0E 4.0-5.5 AAAAA Vanuatu Islands
NEIC reported this earthquake of M 4.6 in Vanuatu was felt with intensity II-III in the area(s) of Vanuatu in Vila Shefa.
O: 17SEP2022 03:17:57 20.9S 178.6W mb=4.4 EMSC FIJI REGION
P: 13SEP2022 146768 20.0S 179.0W 4.0-5.4 BAAAA Tonga Islands
O: 16SEP2022 17:22:30 22.0S 176.1W mb=4.6 EMSC SOUTH OF FIJI ISLANDS
P: 12SEP2022 146769 23.0S 176.0W 4.0-5.5 BAAAA Tonga Islands
O: 16SEP2022 23:58:19 22.2S 171.0E Mw=5.6 EMSC SOUTHEAST OF LOYALTY ISLANDS
O: 17SEP2022 02:59:15 22.8S 172.8E mb=4.5 EMSC SOUTHEAST OF LOYALTY ISLANDS
P: 16SEP2022 146761 23.0S 172.0E 4.0-5.4 AAAAA Loyalty Islands
OCEAN RIDGES
O: 17SEP2022 00:57:23 23.4S 114.9W mb=4.9 EMSC EASTER ISLAND REGION
P: 18SEP2022 146764 24.0S 115.0W 4.0-5.5 AAAAA So. East Pacific Rise
O: 16SEP2022 12:33:11 14.5N 53.6E mb=4.8 EMSC OWEN FRACTURE ZONE REGION
P: 19SEP2022 146565 15.0N 54.0E 3.5-5.2 BAAAA Gulf of Aden
O: 17SEP2022 04:43:13 28.1S 74.3E mb=4.9 EMSC MID-INDIAN RIDGE
O: 17SEP2022 05:25:54 52.8S 25.8E Mw=5.2 EMSC SOUTH OF AFRICA
P: 10SEP2022 146520 53.0S 19.0E 4.0-5.6 CACAA Atlantic-Indian Ridge
O: 16SEP2022 23:34:28 54.0S 136.6W mb=4.9 EMSC PACIFIC-ANTARCTIC RIDGE
ZEALANDIA AND AUSTRALIA REGION
O: 17SEP2022 00:06:55 30.2S 177.8W Mw=5.7 EMSC KERMADEC ISLANDS, NEW ZEALAND
P: 17SEP2022 146782 31.0S 177.0W 4.0-5.4 AAAAA So. Kermadec Islands
JAPAN AND KURIL ISLANDS
O: 16SEP2022 20:00:06 29.0N 142.1E mb=4.6 EMSC BONIN ISLANDS, JAPAN REGION
P: 19SEP2022 146585 29.0N 142.0E 4.0-5.6 BAAAA Bonin Islands
U.S./CANADA*
WESTERN U.S./CANADA
CALIFORNIA
O: 16SEP2022 10:00:46 35.2N 116.3W Ml=2.1 EMSC SOUTHERN CALIFORNIA
O: 16SEP2022 12:15:38 35.2N 116.3W Ml=2.3 EMSC SOUTHERN CALIFORNIA
P: 15SEP2022 146646 35.5N 116.4W 2.5-4.6 AAAAA So. California
O: 16SEP2022 21:14:40 35.9N 117.7W ML=2.0 EMSC CENTRAL CALIFORNIA
P: 13SEP2022 146647 35.9N 117.7W 2.5-4.4 BAAAA So. California
O: 16SEP2022 08:49:41 35.9N 120.5W Md=2.2 EMSC CENTRAL CALIFORNIA
P: 13SEP2022 146636 35.8N 121.3W 2.5-4.5 BAAAA Off So. California
O: 16SEP2022 08:20:30 36.4N 120.8W Md=2.1 EMSC CENTRAL CALIFORNIA
P: 13SEP2022 146607 36.6N 120.7W 2.5-4.6 BAAAA Central California
O: 17SEP2022 00:41:16 38.5N 119.5W Md=2.2 EMSC CENTRAL CALIFORNIA
O: 17SEP2022 05:49:31 38.5N 119.5W Md=2.2 EMSC CENTRAL CALIFORNIA
O: 16SEP2022 16:12:42 38.5N 119.5W Mw=3.6 EMSC CENTRAL CALIFORNIA
P: 15SEP2022 146605 38.6N 119.5W 2.5-4.8 AAAAA California/Nevada area
O: 17SEP2022 05:02:34 39.6N 120.4W MD=2.1 EMSC NORTHERN CALIFORNIA
P: 15SEP2022 146611 39.4N 120.5W 2.5-4.5 AAAAA Central California
O: 16SEP2022 21:56:38 40.5N 124.2W Md=2.1 EMSC NORTHERN CALIFORNIA
O: 16SEP2022 11:32:55 40.9N 123.2W Md=2.1 EMSC NORTHERN CALIFORNIA
P: 15SEP2022 146686 40.2N 124.2W 2.5-4.8 AAAAA Off Coast of No. Calif
O: 17SEP2022 03:53:50 41.9N 119.5W ML=2.7 EMSC NEVADA
P: 18SEP2022 146690 42.2N 120.3W 2.0-4.4 AAAAA Oregon state, U.S.
ALASKA
O: 17SEP2022 02:44:13 59.7N 153.2W ML=3.9 EMSC SOUTHERN ALASKA
P: 14SEP2022 146729 60.0N 153.5W 3.2-5.3 BAAAA 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: 17SEP2022 01:02:04 31.6N 104.3W mb=2.7 EMSC WESTERN TEXAS
O: 16SEP2022 14:34:05 31.7N 104.1W ML=2.9 EMSC WESTERN TEXAS
O: 16SEP2022 07:40:33 31.6N 104.1W ML=2.0 EMSC WESTERN TEXAS
P: 14SEP2022 146639 32.5N 104.6W 2.0-4.0 AAAAA SW U.S.A
P: 17SEP2022 146639 31.6N 103.6W 2.0-4.1 AAAAA SW U.S.A
O: 16SEP2022 13:45:11 37.0N 104.9W ML=2.9 EMSC COLORADO
P: 19SEP2022 146613 36.9N 105.1W 2.0-4.4 BAAAA Colorado area
EASTERN U.S./CANADA
O: 16SEP2022 08:33:04 36.7N 97.7W ML=2.6 EMSC OKLAHOMA
P: 17SEP2022 146652 36.0N 97.0W 2.0-4.3 AAAAA Southern Plains
O: 16SEP2022 02:29:26 44.3N 70.7W MB=2.7 ECAN of Lewiston, ME
P: 16SEP2022 146672 44.0N 70.0W 2.0-3.9 AAAAA Maine
O: 15SEP2022 20:43:06 47.8N 72.0W MB=1.9 ECAN of Lac-Édouard, QC
P: 16SEP2022 146680 46.0N 72.0W 2.0-4.1 ABAAA New England
HAWAII
O: 16SEP2022 14:34:23 19.3N 155.4W ML=3.1 EMSC ISLAND OF HAWAII, HAWAII
P: 17SEP2022 146566 19.3N 155.1W 3.0-4.4 AAAAA Hawaii
O: 16SEP2022 16:19:55 20.3N 156.5W ML=3.4 EMSC MAUI REGION, HAWAII
P: 18SEP2022 146587 20.1N 156.1W 4.0-5.4 AAAAA Hawaii area
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