During the week of April 15, 2024, the Alaska Earthquake Center reported 856 earthquakes within the state. The largest earthquake was magnitude 4.6 that occurred on April 15 at 10:17:02 AKDT (April 15, 18:17:02 UTC), 2 miles S of Attu.

Some of the noteworthy events include a magnitude 3.8 earthquake that occurred 11 miles S of Bobrof Island on April 19, 2024 04:53:53 AKDT and a magnitude 3.6 earthquake that occurred 8 miles S of Bobrof Island on April 19, 2024 08:05:25 AKDT. Including these events, we observed high activity of this area with 139 events during this week, ranging in magnitudes between 0.9 - 3.8.

Another significant event was a magnitude 4.2 earthquake that occurred 39 miles SE of Deering on April 19, 2024 04:41:45 AKDT.

We recorded 22 icequakes recorded in the Prince William Sound, Icy Bay, and Yakutat Bay. 

There were 3 suspected quarry blasts (M1.0 - M1.1) located in the Goldstream Valley, and two of these events were reported as felt in Fairbanks during this week. 


Magnitude 4.6, 2 miles S of Attu, April 15 10:17:02 AKDT
Magnitude 4.6, 98 miles SE of Chignik, April 18 23:27:33 AKDT
Magnitude 4.2, 37 miles SE of Yunaska Island, April 16 17:48:25 AKDT
Magnitude 4.2, 39 miles SE of Deering, April 19 04:41:46 AKDT
Magnitude 3.9, 48 miles NW of Fisher Caldera, April 20 23:23:48 AKDT
Magnitude 3.9, 8 miles SW of Yunaska Island, April 19 08:25:45 AKDT
Magnitude 3.8, 110 miles S of Unalaska, April 16 12:33:11 AKDT
Magnitude 3.8, 11 miles S of Bobrof Island, April 19 04:53:54 AKDT
Magnitude 3.6, 8 miles S of Bobrof Island, April 19 08:05:26 AKDT
Magnitude 3.5, 14 miles E of Talkeetna, April 18 12:31:48 AKDT

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.