WEEK SEISMICITY REPORT FOR FEBRUARY 13, 2023 TO FEBRUARY 19, 2023

During the week of February 13, 2023, the Alaska Earthquake Center reported 914 earthquakes within the state. The largest earthquake was magnitude 5.2 that occurred on February 14 at 22:35:23 AKST (February 15, 07:35:23 UTC), 55 miles SW of Mt. Gareloi.

There were 60 volcanic earthquakes with magnitudes between M1.8-M3.2 under Takawangha Volcano in central Aleutians. This volcano is currently showing signs of unrest. See more information at avo.alaska.edu.

Other notable events include a magnitude 3.7 14 miles W of Kaktovik on February 17, 2023 14:35:07 AKST, and a magnitude 4.0 22 miles SW of Willow on February 16, 2023 14:32:34 AKST that was reported as felt widely in Anchorage and MatSu valley.

There were 6 icequakes recorded in Prince William Sound and Mt. Wrangell. Three events were reported as felt.

NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE


Magnitude 5.2, 55 miles SW of Mt. Gareloi, February 14 22:35:24 AKST
Magnitude 4.2, 15 miles E of Augustine Volcano, February 18 16:46:57 AKST
Magnitude 4.0, 10 miles SE of Nikolski, February 12 16:31:23 AKST
Magnitude 4.0, 30 miles SE of Mt. Recheshnoi, February 18 20:19:38 AKST
Magnitude 4.0, 29 miles N of Atka, February 17 19:30:06 AKST
Magnitude 4.0, 22 miles SW of Willow, February 16 14:32:34 AKST
Magnitude 3.8, 21 miles SE of Kantishna, February 19 06:32:54 AKST
Magnitude 3.8, 43 miles SE of Cantwell, February 18 03:00:25 AKST
Magnitude 3.7, 14 miles W of Kaktovik, February 17 14:35:08 AKST
Magnitude 3.7, 17 miles SE of Redoubt Volcano, February 17 15:46:48 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.