WEEK SEISMICITY REPORT FOR AUGUST 14, 2023 TO AUGUST 20, 2023
During the week of August 14, 2023, the Alaska Earthquake Center reported 903 earthquakes within the state. The largest earthquake was magnitude 5.2 that occurred on August 19 at 17:48:58 AKDT (August 20, 01:48:58 UTC), 105 miles SE of Nikolski.
Other significant events include a magnitude 5.0 earthquake that occurred 59 miles S of Westdahl Peak on August 14, 2023 14:13:11 AKDT which had over 30 aftershocks. Also, there was an increase in activity near Yunaska volcano with over 30 events in that small area.
There were 21 icequakes recorded near Mt. Spurr, the Prince William Sound region, and Wright Glacier.
Two events were reported as felt, both occurred on the Kenai peninsula.
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
Magnitude 5.2, 105 miles SE of Nikolski, August 19 17:48:59 AKDT
Magnitude 5.0, 59 miles S of Westdahl Peak, August 14 14:13:12 AKDT
Magnitude 4.7, 62 miles S of Tanaga Volcano, August 15 08:20:54 AKDT
Magnitude 4.6, 54 miles SE of Herbert Island, August 16 01:50:23 AKDT
Magnitude 4.5, 54 miles SW of Sand Point, August 20 12:56:41 AKDT
Magnitude 4.2, 15 miles SW of Segula Peak, August 18 03:22:40 AKDT
Magnitude 4.0, 111 miles S of Bobrof Island, August 20 06:26:15 AKDT
Magnitude 3.9, 31 miles S of Atka Pass, August 19 21:15:21 AKDT
Magnitude 3.9, 56 miles S of Westdahl Peak, August 14 14:15:55 AKDT
Magnitude 3.7, 25 miles W of Mt. Martin, August 16 12:49:02 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.