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MONTH SEISMICITY REPORT FOR DECEMBER 2022
During the month of December 2022, the Alaska Earthquake Center reported 4334 earthquakes within the state. The largest earthquake was magnitude 6.3 that occurred on December 14 at 09:40:26 AKST (December 14, 18:40:26 UTC), 18 miles W of Amchitka.
On December 11, at 11:09 PM AKST an earthquake of M4.7 occurred 39 miles E of Seldovia. This earthquake was reported felt in multiple Kenai Peninsula communities. 238 felt reports were submitted for this event.
On December 7, at 7:21 AM AKST, an earthquake of M 4.4 was recorded 29 miles S of Ester in Central Alaska. It was felt in Fairbanks and surrounding communities, 84 felt reports were submitted.
Other earthquakes of magnitude greater than 4.0 occurred along the subduction zone.
We also recorded 124 volcano-tectonic earthquakes, 1-4 miles deep, associated with Katmai, 37 suspected quarry blasts, 71 ice quakes, and 5 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.
13 earthquakes were reported as felt in December
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
Magnitude 6.3, 15 miles NW of Amchitka, December 14 09:40:27 AKST
Magnitude 5.2, 47 miles SW of Buldir Is, December 10 13:11:04 AKST
Magnitude 4.9, 55 miles SE of Nikolski, December 4 22:11:13 AKST
Magnitude 4.9, 103 miles SE of King Cove, December 20 23:50:51 AKST
Magnitude 4.8, 54 miles S of Makushin Volcano, December 1 02:58:59 AKST
Magnitude 4.8, 21 miles S of Atka Pass, December 5 06:33:45 AKST
Magnitude 4.8, 45 miles NW of Attu, December 24 22:57:12 AKST
Magnitude 4.7, 39 miles E of Seldovia, December 11 23:09:02 AKST
Magnitude 4.6, 32 miles S of Sand Point, December 30 21:13:28 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.