WEEK SEISMICITY REPORT FOR SEPTEMBER 26, 2022 TO OCTOBER 2, 2022
During the week of September 26, 2022, the Alaska Earthquake Center reported 935 earthquakes within the state. The largest earthquake was magnitude 5.0 that occurred on September 26 at 03:39:19 AKDT (September 26, 11:39:19 UTC), 27 miles W of Amchitka.
All other events greater than 3.5 occurred along the subduction zone except for a M5.0 25 miles NE of Icy Bay, a M3.5 38 miles SW of Savoonga, and a M3.5 125 miles S of Icy Bay. Areas of ongoing seismicity include the Purcell Mountain swarm, western Brooks Range, Kaktovic, offshore Kodiak, and Simeonof-Chignik zones. 23 icequakes were recorded in the eastern Alaska Range, Kenai Fjords National Park, Prince William Sound, Icy Bay, and Southeast. Two events were reported as felt.
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
Magnitude 5.0, 27 miles W of Amchitka, September 26 03:39:19 AKDT
Magnitude 5.0, 25 miles NE of Icy Bay, September 29 15:08:10 AKDT
Magnitude 4.6, 56 miles SE of Herbert Island, September 29 17:20:10 AKDT
Magnitude 4.3, 48 miles SE of Sand Point, September 29 11:10:25 AKDT
Magnitude 4.3, 60 miles SE of Herbert Island, September 29 22:38:06 AKDT
Magnitude 4.3, 11 miles E of Kokhanok, October 2 15:03:08 AKDT
Magnitude 4.1, 19 miles SW of Amchitka, September 29 10:52:15 AKDT
Magnitude 4.1, 2 miles S of Redoubt Volcano, September 30 15:23:34 AKDT
Magnitude 3.5, 38 miles SW of Savoonga, September 27 03:17:04 AKDT
Magnitude 3.5, 125 miles S of Icy Bay, September 26 03:43:08 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.