During the week of March 11, 2024, the Alaska Earthquake Center reported 868 earthquakes within the state. The largest earthquake was magnitude 4.6 that occurred on March 12 at 12:56:50 AKDT (March 12, 20:56:50 UTC), 35 miles S of Atka Pass.

Notable seismic events include a magnitude 3.9 earthquake that struck 39 miles north of Talkeetna on March 13, 2024, at 21:52:30 AKDT, which was reported as felt in South Central Alaska, including Anchorage and Talkeetna. Another significant event was a magnitude 3.4 earthquake that occurred on March 11, 2024, at 12:46:19 AKDT, located 18 miles northwest of Anchor Point. Additionally, on March 17, 2024, at 02:08:40 AKDT, a magnitude 3.2 earthquake occurred 11 miles southeast of Iliamna Volcano.

Throughout the week, 10 aftershocks were documented following the magnitude 5.3 Salcha earthquake that occurred on January 19, 2024, with magnitudes ranging from 0.8 to 2.0. In addition, there was a decrease in seismic activity in the western Brooks Range northeast of Kobuk, with 8 recorded events ranging from magnitude 1.1 to 2.2. 

A cluster of 8 seismic events was documented in the east-central part of the Seward Peninsula near Mount Boyan, with magnitudes ranging from 1.0 to 2.1.

There were 11 icequakes recorded in the Prince William Sound region and Yakutat Bay.

2 events were reported as felt.



Magnitude 4.6, 35 miles S of Atka Pass, March 12 12:56:50 AKDT
Magnitude 4.4, 48 miles SE of Mt. Recheshnoi, March 11 16:38:59 AKDT
Magnitude 4.3, 72 miles SW of Kiska Volcano, March 10 22:37:20 AKDT
Magnitude 4.2, 44 miles SE of Okmok Caldera, March 16 17:45:46 AKDT
Magnitude 3.9, 39 miles N of Talkeetna, March 13 21:52:30 AKDT
Magnitude 3.9, 64 miles S of Buldir Is, March 12 19:43:53 AKDT
Magnitude 3.7, 74 miles SE of Okmok Caldera, March 17 03:22:10 AKDT
Magnitude 3.7, 80 miles S of King Cove, March 16 08:35:26 AKDT
Magnitude 3.6, 38 miles S of Atka Pass, March 12 15:04:38 AKDT
Magnitude 3.4, 16 miles E of Kialagvik Creek, March 16 07:23:10 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.