During the week of September 28, 2020, the Alaska Earthquake Center reported 699 earthquakes within the state. The largest earthquake was magnitude 5.2 that occurred on September 27 at 18:44:22 AKST (September 28, 02:44:22 UTC), 58 miles S of Herbert Island. All events greater than M4.0 occured along the Aleutian Islands. 1 event was felt this week. Icequakes at Prince William Sound, Icy Bay, and Yakutat Bay were ongoing.
Magnitude 5.2, 58 miles S of Herbert Island, September 27 18:44:23 AKST
Magnitude 5.0, 38 miles S of Mt. Sergief, October 1 02:25:06 AKST
Magnitude 4.4, 50 miles S of Mt. Gareloi, October 3 23:11:43 AKST
Magnitude 4.0, 65 miles SE of King Cove, October 4 15:19:01 AKST
Magnitude 3.9, 28 miles NW of Kaguyak Crater, October 1 19:22:22 AKST
Magnitude 3.8, 69 miles SE of Herbert Island, September 28 17:15:16 AKST
Magnitude 3.8, 144 miles SE of Kodiak, October 2 02:06:45 AKST
Magnitude 3.7, 43 miles SE of Kantishna, September 27 19:41:31 AKST
Magnitude 3.7, 26 miles S of Amchitka, October 1 21:29:55 AKST
Magnitude 3.7, 45 miles SE of Perryville, September 27 22:32:15 AKST
This report was compiled by S. Cotton.
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 authroized or unauthorized use.
For more information on earthquakes and seismology, contact the AEC at (907)-474-7320.