WEEK SEISMICITY REPORT FOR AUGUST 22, 2022 TO AUGUST 28, 2022

During the week of August 22, 2022, the Alaska Earthquake Center reported 809 earthquakes within the state. The largest earthquake was magnitude 4.5 that occurred on August 22 at 08:35:01 AKST (August 22, 16:35:01 UTC), 14 miles SW of Amak Island.

All other events greater than 3.5 occurred along the subduction zone except for a M4.1 4 miles E of Healy, a M4.0 23 miles E of Augustine Volcano, a M3.9 5 miles NE of Girdwood, a M3.8 62 miles east of Yakutat, a 3.6 6 miles N of Valdez, and a 3.5 15 miles NE of Nome.  Areas of ongoing seismicity include the Purcell Mountains, Kaktovic, offshore Kodiak, and Simeonof-Chignik zones.  There were 32 icequakes recorded in Prince William Sound, Malaspina Glacier, Yakutat, Wrangell St. Elias, Glacier Bay, and Wright Glacier.  Seven events were reported as felt.

NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE


Magnitude 4.5, 14 miles SW of Amak Island, August 22 08:35:02 AKST
Magnitude 4.1, 4 miles E of Healy, August 24 05:03:55 AKST
Magnitude 4.0, 23 miles E of Augustine Volcano, August 23 22:47:53 AKST
Magnitude 3.9, 5 miles NE of Girdwood, August 25 21:19:35 AKST
Magnitude 3.8, 62 miles E of Yakutat, August 23 01:26:45 AKST
Magnitude 3.7, 20 miles SE of Atka, August 22 16:55:58 AKST
Magnitude 3.6, 6 miles N of Valdez, August 25 00:33:53 AKST
Magnitude 3.5, 15 miles NE of Nome, August 24 11:05:29 AKST
Magnitude 3.5, 87 miles SE of Akutan, August 24 03:13:52 AKST
Magnitude 3.5, 112 miles S of Shemya Is, August 27 07:49:38 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.