During the week of March 21, 2022, the Alaska Earthquake Center reported 756 earthquakes within the state. The largest earthquake was a magnitude 4.8 that occurred on March 23 at 10:45:12 AKST (March 23, 18:45:12 UTC), 12 miles N of Iliamna Volcano. All other events greater than 3.5 occured along the subduction zone except for a 3.6, 16 miles S of Iliamna Volcano. Areas of ongoing seismicity included the offshore Kodiak and Simeonof-Chignik Zones. There were five glacial events recorded in the Prince William Sound and Wrangell St Elias regions. Three events were reported as felt.
Magnitude 4.8, 12 miles N of Iliamna Volcano, March 23 10:45:13 AKST
Magnitude 4.3, 99 miles S of Atka Pass, March 24 10:07:58 AKST
Magnitude 4.2, 43 miles SE of Adak, March 23 11:42:11 AKST
Magnitude 4.2, 138 miles SE of Chignik, March 26 10:17:06 AKST
Magnitude 4.1, 10 miles S of Davidof Island, March 20 17:22:21 AKST
Magnitude 3.9, 43 miles SE of Adak, March 23 11:37:48 AKST
Magnitude 3.9, 53 miles S of Tanaga Volcano, March 26 13:24:47 AKST
Magnitude 3.6, 16 miles S of Iliamna Volcano, March 20 21:15:32 AKST
Magnitude 3.6, 73 miles SE of Sand Point, March 26 04:15:42 AKST
Magnitude 3.5, 146 miles NW of Gambell, March 24 13:19:05 AKST
This report was compiled by K. Becker
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.