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MONTH SEISMICITY REPORT FOR NOVEMBER 2022
During the month of November 2022, the Alaska Earthquake Center reported 4226 earthquakes within the state. The largest earthquake was magnitude 5.5 that occurred on November 21 at 06:09:28 AKST (November 21, 15:09:28 UTC), 57 miles SE of Nikolski. There were 14 more earthquakes with magnitude greater than 4.0 recorded in November.
On November 18th, at 3:03 PM AKST, the earthquake of M4.9, 13 miles NW of Anchorage, rattled MatSu Valley and big Anchorage area. We got 1869 felt reports from that communities.
On November 17th, at 1:34 PM AKST, the earthquake of M4.0 was recorded 9 miles WSW of Salcha, and it was felt throughout Fairbanks and North Pole. 277 felt reports were submitted.
We located about 200 volcano-tectonic earthquakes, 1-4 miles deep, associated with Katmai (magnitude 0.5-4.6) and Takawangha (magnitude 1.5-4.2) volcanoes. We also reported 32 suspected quarry blasts, 166 ice quakes, and 8 events of unknown origin.
We continue to monitor seismic activity within Anchorage, offshore Kodiak, Simeonof-Chignik aftershock zones as well as crustal seismic activity in the Brooks Range, Seward Peninsula and Bering Strait. The number of events at Purcell Mountain has increased over November, we located 140 events in the area with magnitude range of 1.0-2.8.
17 earthquakes were reported as felt in November.
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
Magnitude 5.5, 57 miles SE of Nikolski, November 21 06:09:29 AKST
Magnitude 5.1, 40 miles SE of Adak, November 6 01:02:04 AKST
Magnitude 4.9, 13 miles NW of Anchorage, November 17 15:03:10 AKST
Magnitude 4.8, 38 miles S of Atka Pass, November 27 10:55:00 AKST
Magnitude 4.7, 56 miles S of Mt. Gareloi, November 13 00:20:48 AKST
Magnitude 4.6, 118 miles SE of Mt. Recheshnoi, November 5 17:11:46 AKDT
Magnitude 4.6, 37 miles NW of Mt. Gareloi, November 8 05:38:46 AKST
Magnitude 4.6, 2 miles SW of Novarupta, November 20 05:35:34 AKST
Magnitude 4.6, 55 miles SE of Nikolski, November 21 18:27:31 AKST
Magnitude 4.5, 46 miles SE of Mt. Recheshnoi, November 7 15:00:23 AKST
This report was compiled by N Kozyreva
The data in this report are preliminary and subject to revision. The earthquake parameters have been determined by the AEC, with supplemental data provided by the USGS National Earthquake Information Center. The data are released on the condition that none of the cooperating agencies may be held liable for any damaged resulting from its authorized or unauthorized use.
For more information on earthquakes and seismology, contact the AEC at 907-474-7320.