WEEK SEISMICITY REPORT FOR DECEMBER 11, 2023 TO DECEMBER 17, 2023
During the week of December 11, 2023, the Alaska Earthquake Center reported 704 earthquakes within the state. The largest earthquake was magnitude 4.7 that occurred on December 16 at 10:24:40 AKST (December 16, 19:24:40 UTC), 23 miles NW of Iliamna Volcano. This event was reported as being felt.
As another notable event, a magnitude 3.5 occurred 16 miles W of Healy on December 12, 2023 06:13:26 AKST, which was felt in Fairbanks, Healy, and Nenana.
We recorded some activity of the Purcell Mountains swarm region with 14 events during this week, ranging in magnitudes between 1.0 - 2.6.
There were 2 icequakes recorded in the Prince William Sound region.
3 events were reported as felt.
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
Magnitude 4.7, 23 miles NW of Iliamna Volcano, December 16 10:24:40 AKST
Magnitude 4.3, 19 miles S of Atka Pass, December 12 11:32:01 AKST
Magnitude 4.1, 158 miles SE of Kodiak, December 13 19:00:29 AKST
Magnitude 3.9, 60 miles SE of Nikolski, December 11 11:17:44 AKST
Magnitude 3.9, 9 miles W of Atka, December 12 06:03:20 AKST
Magnitude 3.9, 51 miles S of Mt. Sergief, December 14 12:29:44 AKST
Magnitude 3.7, 53 miles S of Nikolski, December 11 02:01:20 AKST
Magnitude 3.6, 57 miles SE of Yantarni Volcano, December 15 16:05:46 AKST
Magnitude 3.5, 16 miles W of Healy, December 12 06:13:26 AKST
Magnitude 3.5, 39 miles NW of Seguam Island, December 12 15:04:31 AKST
This report was compiled by Ayumi Bakken
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.