During the month of November 2023, the Alaska Earthquake Center reported 3126 earthquakes within the state. The largest earthquake was magnitude 5.6 that occurred on November 27 at 21:13:22 AKST (November 28, 06:13:22 UTC), in Fox islands, Aleutian Islands, 78 miles E of Nikolski. All earthquakes of magnitude 4.0 and greater occurred along the subduction zone.

We also reported 30 suspected quarry blasts located in the vicinity of Fort Knox and Usibelli mines in the interior of Alaska,  90 ice quakes which were located mostly in Prince William Sound, Yakutat Bay and Icy Bay, and about 40 events associated with volcanic activity mostly at Katmai volcanic group.

Ten earthquakes were reported as being felt in November.


Magnitude 5.6, 66 miles SE of Okmok Caldera, November 27 21:13:22 AKST
Magnitude 5.1, 28 miles W of Amchitka, November 5 04:27:28 AKST
Magnitude 5.0, 32 miles S of Seguam Island, November 2 22:47:28 AKDT
Magnitude 5.0, 31 miles S of Adak, November 30 07:33:06 AKST
Magnitude 4.7, 132 miles SE of Kodiak, November 17 10:13:53 AKST
Magnitude 4.6, 48 miles S of Akutan, November 11 23:25:41 AKST
Magnitude 4.5, 59 miles SE of Sand Point, November 11 07:51:58 AKST
Magnitude 4.5, 48 miles S of Akutan, November 11 20:50:34 AKST
Magnitude 4.5, 100 miles SE of Yunaska Island, November 16 19:46:58 AKST
Magnitude 4.5, 70 miles S of Chagulak Island, November 24 08:05:55 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.