WEEK SEISMICITY REPORT FOR JULY 25, 2022 TO JULY 31, 2022
During the week of July 25, 2022, the Alaska Earthquake Center reported 856 earthquakes within the state. The largest earthquake was magnitude 4.4 that occurred on July 31 at 06:04:54 AKST (July 31, 14:04:54 UTC), 32 miles S of Chagulak Island. All other events greater than M 3.5 occurred along the subduction zone, except for a M4.3 32 miles S of Kantishna, a M3.8 17 miles NE of Mt. Ugashik, and a M3.7 96 miles NW of Sheldons Point. Areas of ongoing seismicity include the Purcell Mountains swarm, Kaktovic, offshore Kodiak, and Simeonof-Chignik zones. There were 4 icequakes recorded near Prince William Sound and Icy Bay area. No events were reported as felt.
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
Magnitude 4.4, 32 miles S of Chagulak Island, July 31 06:04:54 AKST
Magnitude 4.3, 32 miles S of Kantishna, July 25 09:11:17 AKST
Magnitude 4.2, 18 miles NW of Amukta Pass, July 25 05:21:34 AKST
Magnitude 4.2, 60 miles SE of Atka, July 28 04:13:52 AKST
Magnitude 4.0, 58 miles SW of Mt. Gareloi, July 26 06:00:09 AKST
Magnitude 3.8, 17 miles NE of Mt. Ugashik, July 27 14:10:28 AKST
Magnitude 3.8, 38 miles E of Akutan, July 30 09:55:42 AKST
Magnitude 3.7, 56 miles SE of Atka, July 28 03:22:45 AKST
Magnitude 3.7, 96 miles NW of Sheldons Point, July 25 00:44:53 AKST
Magnitude 3.5, 33 miles S of Chagulak Island, July 31 15:30:41 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 damaged resulting from its authorized or unauthorized use.
For more information on earthquakes and seismology, contact the AEC at 907-474-7320.