During the week of March 27, 2023, the Alaska Earthquake Center reported 1052 earthquakes within the state. The largest earthquake was magnitude 4.5 that occurred on March 26 at 21:25:21 AKDT (March 27, 05:25:21 UTC), 138 miles S of Mt. Gareloi.

Other significant events include a magnitude 4.3 earthquake that occurred 35 miles S of Buldir Island on March 30, 2023, 10:47:08 AKDT, and a magnitude 3.8 earthquake that occurred 22 miles NW of Hughes on March 31, 2023, 02:33:54 AKDT.

Seismic activity near the Tanaga and Takawangha volcanoes remained elevated this week. There were 26 volcano-tectonic earthquakes with magnitude ranging from 2.0 to 3.2 under Tanaga and Takawangha Volcanoes in central Aleutians. These volcanoes are at "YELLOW Alert Level ADVISORY" by the Alaska Volcano Observatory. Please see https://avo.alaska.edu for more details.  

Seismic activity near Makushin Volcano is also elevated this week.There were 70 volcano-tectonic earthquakes recorded with magnitude ranging from 1.0-2.8. Please see https://avo.alaska.edu/volcanoes/volcinfo.php?volcname=Makushin  for more details.

There were 14 icequakes recorded in Prince William Sound, icy Bay and Yakutat region.

1 event was reported as felt.


Magnitude 4.5, 138 miles S of Mt. Gareloi, March 26 21:25:22 AKDT
Magnitude 4.3, 35 miles S of Buldir Is, March 30 10:47:08 AKDT
Magnitude 3.8, 22 miles NW of Hughes, March 31 02:33:54 AKDT
Magnitude 3.8, 31 miles NW of Carlisle Island, March 26 20:50:01 AKDT
Magnitude 3.6, 27 miles NE of Buldir Island, March 28 21:07:52 AKDT
Magnitude 3.5, 17 miles S of Bobrof Island, March 27 21:46:25 AKDT
Magnitude 3.4, 24 miles NW of Karluk, March 30 07:36:28 AKDT
Magnitude 3.4, 25 miles E of Chignik, March 27 17:11:33 AKDT
Magnitude 3.3, 176 miles SE of Kodiak, March 29 03:37:20 AKDT
Magnitude 3.3, 5 miles W of Carlisle Island, March 30 10:24:47 AKDT

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.