WEEK SEISMICITY REPORT FOR AUGUST 1, 2022 TO AUGUST 7, 2022
During the week of August 1, 2022, the Alaska Earthquake Center reported 818 earthquakes within the state. The largest earthquake was magnitude 5.3 that occurred on July 31 at 16:36:39 AKST (August 1, 00:36:39 UTC), 52 miles S of Akutan.
All other events greater than M 3.5 occurred along the subduction zone, except for a M4.0 133 miles S of Middleton Island. Areas of ongoing seismicity include the Purcell Mountains swarm, Kaktovic, offshore Kodiak, and Simeonof-Chignik zones. There were 16 icequakes recorded near Prince William Sound, Wrangell St. Elias National Park and Preserve, Icy Bay, Glacier Bay, and E of Juneau. 3 events were reported as felt.
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
Magnitude 5.3, 52 miles S of Akutan, July 31 16:36:39 AKST
Magnitude 5.1, 62 miles SE of Nikolski, July 31 20:08:19 AKST
Magnitude 4.5, 47 miles SE of Akutan Pass, August 7 06:01:46 AKST
Magnitude 4.3, 6 miles W of Akutan Pass, July 31 17:59:33 AKST
Magnitude 4.2, 76 miles SE of Akhiok, August 6 21:35:47 AKST
Magnitude 4.1, 17 miles N of Great Sitkin Island, August 6 00:17:26 AKST
Magnitude 4.0, 64 miles SE of Nikolski, July 31 21:45:53 AKST
Magnitude 4.0, 133 miles S of Middleton Island, August 5 01:43:42 AKST
Magnitude 4.0, 117 miles SE of Perryville, August 7 11:15:28 AKST
Magnitude 3.9, 73 miles SE of King Cove, August 5 23:30:51 AKST
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.