WEEK SEISMICITY REPORT FOR SEPTEMBER 12, 2022 TO SEPTEMBER 18, 2022
During the week of September 12, 2022, the Alaska Earthquake Center reported 796 earthquakes within the state. The largest earthquake was magnitude 4.6 that occurred on September 15 at 06:02:38 AKST (September 15, 14:02:38 UTC), 32 miles NE of Semisopochnoi Island.
All other events greater than 3.5 occurred along the subduction zone except for a Magnitude 3.8 - 23 miles SE of Clear. Areas of ongoing seismicity include the Purcell Mountain, Kaktovic, offshore Kodiak, and Simeonof-Chignik zones. There were 40 icequakes recorded in Prince William Sound, Wrangell St. Elias National Park and Preserve, Icy Bay, Yakutat bay and Southwest of Juneau. 2 events were reported as felt.
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
Magnitude 4.6, 32 miles NE of Semisopochnoi Island, September 15 06:02:39 AKST
Magnitude 4.4, 57 miles SE of Yantarni Volcano, September 12 10:46:30 AKST
Magnitude 4.1, 67 miles SE of Old Harbor, September 13 09:57:28 AKST
Magnitude 3.9, 37 miles S of Tanaga Volcano, September 17 13:28:21 AKST
Magnitude 3.8, 85 miles S of Isanotski Peaks, September 11 19:47:24 AKST
Magnitude 3.8, 23 miles SE of Clear, September 13 15:41:29 AKST
Magnitude 3.8, 10 miles SW of Amchitka, September 14 13:57:13 AKST
Magnitude 3.7, 23 miles S of Iliamna Volcano, September 16 18:44:15 AKST
Magnitude 3.7, 21 miles NE of Augustine Volcano, September 17 14:08:36 AKST
Magnitude 3.6, 109 miles SE of Chignik, September 15 09:04:35 AKST
This report was compiled by Shah Khan
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.