During the week of May 31, 2021, the Alaska Earthquake Center reported 1359 earthquakes within the state. The largest earthquake was magnitude 6.1 that occurred on May 30 at 22:59:55 AKST (May 31, 06:59:55 UTC), 55 miles N of Sutton. Following this earthquake, we located roughly 450 aftershocks. Most of the earthquakes larger than magnitude 3.5 were located along the Aleutian Islands, except for three aftershocks. Glacial icequakes are ongoing in Prince William Sound and Yakutat Bay. There are continued aftershocks in the Kaktovik, Purcell Mountains and Simeonoff areas. 25 events were reported as felt.
Magnitude 6.1, 55 miles N of Sutton, May 30 22:59:56 AKST
Magnitude 4.6, 56 miles N of Sutton, May 31 04:14:45 AKST
Magnitude 4.2, 211 miles SE of Perryville, June 6 13:34:04 AKST
Magnitude 4.0, 58 miles N of Sutton, June 6 09:55:16 AKST
Magnitude 3.9, 52 miles N of Sutton, June 3 10:11:16 AKST
Magnitude 3.8, 55 miles N of Sutton, May 30 23:03:52 AKST
Magnitude 3.8, 57 miles S of Unalaska, June 4 15:04:27 AKST
Magnitude 3.4, 41 miles SE of Yantarni Volcano, June 5 14:10:49 AKST
Magnitude 3.4, 57 miles N of Sutton, May 30 23:04:08 AKST
Magnitude 3.4, 14 miles E of Yunaska Island, June 4 03:44:36 AKST
This report was compiled by R. Ranft
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 damage resulting from its authorized or unauthorized use.
For more information on earthquakes and seismology, contact the AEC at (907)-474-7320.