WEEK SEISMICITY REPORT FOR SEPTEMBER 19, 2022 TO SEPTEMBER 25, 2022

During the week of September 19, 2022, the Alaska Earthquake Center reported 879 earthquakes within the state. The largest earthquake was magnitude 5.1 that occurred on September 20 at 00:37:39 AKST (September 20, 08:37:39 UTC), 67 miles SE of Yantarni Volcano.

All other events greater than 3.5 occurred along the subduction zone except for a M4.8 15 miles W of Pump Station #12, a M4.5 13 miles N of Nenana, a M4.2 45 miles NW of Talkeetna, a M4.1 41 miles S of Kantishna, a M3.9 24 miles SE of Iliamna Volcano, and a M3.6 10 miles SW of Larsen Bay.  Areas of ongoing seismicity include the Purcell Mountain swarm, western Brooks Range, Kaktovic, offshore Kodiak, and Simeonof-Chignik zones.  19 icequakes were recorded in Prince William Sound, Icy Bay, and Southeast.  Four events were reported as felt.

NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE


Magnitude 5.1, 67 miles SE of Yantarni Volcano, September 20 00:37:40 AKST
Magnitude 4.8, 15 miles W of Pump Station #12, September 24 07:18:55 AKST
Magnitude 4.5, 13 miles N of Nenana, September 18 17:15:29 AKST
Magnitude 4.2, 45 miles NW of Talkeetna, September 19 00:26:58 AKST
Magnitude 4.1, 14 miles SE of Kanaga Volcano, September 18 19:38:12 AKST
Magnitude 4.1, 41 miles S of Kantishna, September 20 20:02:30 AKST
Magnitude 4.0, 161 miles S of King Cove, September 19 13:26:01 AKST
Magnitude 3.9, 24 miles SE of Iliamna Volcano, September 19 12:03:47 AKST
Magnitude 3.9, 35 miles S of Adak, September 25 03:16:43 AKST
Magnitude 3.8, 119 miles S of Akhiok, September 22 10:30:11 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.