During the week of October 24, 2022, the Alaska Earthquake Center reported 928 earthquakes within the state. The largest earthquake was magnitude 4.9 that occurred on October 26 at 01:30:51 AKST (October 26, 09:30:51 UTC), 32 miles S of Sand Point.

There were two events greater than M3.5 that occurred outside the subduction zone, a M4.7 17 miles E of St. George on October 26th, 2022 08:25:28 AKDT and a M4.2 22 miles E of Sutton on October 30th, 08:48:19 AKDT. This earthquake was reported felt in the surrounding region. The only other earthquake reported as felt this week is a M4.9 32 miles S of Sand Point on October 26th, 2022 01:30:51 AKDT.

There was a swarm of 50 earthquakes SE of Atka Island most of which occurred between October 28th and 30th, seven of which had magnitudes greater than 4.0 with the largest event reaching M4.8.

Detected icequakes decreased this week with 35 icequakes located in southcentral and southeast Alaska.


Magnitude 4.9, 32 miles S of Sand Point, October 26 01:30:52 AKDT
Magnitude 4.8, 57 miles SE of Mt. Sergief, October 29 05:24:07 AKDT
Magnitude 4.7, 17 miles E of St. George, October 26 08:25:29 AKDT
Magnitude 4.7, 54 miles SE of Mt. Sergief, October 29 11:41:36 AKDT
Magnitude 4.5, 51 miles SE of Mt. Sergief, October 29 11:40:37 AKDT
Magnitude 4.2, 63 miles SE of Mt. Sergief, October 28 13:33:36 AKDT
Magnitude 4.2, 40 miles SE of Mt. Sergief, October 29 11:43:20 AKDT
Magnitude 4.2, 22 miles E of Sutton, October 30 08:48:20 AKDT
Magnitude 4.1, 64 miles SE of Mt. Sergief, October 28 14:24:04 AKDT
Magnitude 4.0, 43 miles SE of Mt. Sergief, October 28 20:53:54 AKDT

This report was compiled by R. Wilkes

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.