Monthly Seismicity Report For March 1, 2019 to March 31, 2019

During the month of March 2019, the Alaska Earthquake Center reported 4,961 earthquakes within the state. The largest earthquake was a magnitude 5.2 that occurred on March 6 at 12:33:13 AKST (March 6, 21:33:13 UTC), 40 miles S of Shungnak, and is part of the ongoing Purcell Mountains swarm. There was also a magnitude 5.2 earthquake 45 miles south of Tanaga Volcano on March 10th. Additionally, there is continuing activity from aftershocks in the Icy Bay area, Offshore Kodiak, and Kaktovik. A total of 17 events were felt this month.

Notable Events in Descending Order of Magnitude

Magnitude 5.2, 40 miles S of Shungnak, March 6 11:33:14 AKST
Magnitude 5.2, 45 miles S of Tanaga Volcano, March 10 20:23:12 AKST
Magnitude 5.1, 25 miles E of Shemya Is, March 5 02:01:15 AKST
Magnitude 5.1, 29 miles S of Atka Pass, March 6 23:45:59 AKST
Magnitude 5.0, 40 miles S of Shungnak, March 26 11:27:19 AKST
Magnitude 4.8, 45 miles SE of Adak, March 28 19:13:53 AKST
Magnitude 4.8, 11 miles S of Icy Bay, March 10 14:07:18 AKST
Magnitude 4.8, 17 miles N of Mt. Griggs, March 7 12:11:51 AKST
Magnitude 4.8, 68 miles S of Port Alexander, March 9 01:11:00 AKST
Magnitude 4.5, 6 miles NW of Westdahl Peak, March 7 06:29:50 AKST

This report was compiled by M. Braun.

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 authroized or unauthorized use.

For more information on earthquakes and seismology, contact the AEC at (907)-474-7320.