Monthly Seismicity Report For January 1, 2021 to January 31, 2021

During the month of January 2020, the Alaska Earthquake Center reported 3731 earthquakes within the state. The largest earthquake was magnitude 6.1 that occurred on January 3 at 03:38:49 AKST (January 3, 12:38:49 UTC), 51 miles E of Amchitka. All events of magnitude greater than 4.0 occured along the Aleutian trench, stretching from Cordova on the East to Rat Islands on the West. The aftershock activity is ongoing in different "hot" spots.  So we located about 600 Simeonof aftershocks, about 100 Anchorage  aftershocks  and about the same number of events in Purcell Mountains, 40 events in Kaktovik, and 12 offshore Kodiak events. 13 earthquakes were reported as felt this month. 

Notable Events in Descending Order of Magnitude

Magnitude 6.1, 51 miles E of Amchitka, January 3 03:38:49 AKST
Magnitude 5.1, 48 miles S of King Cove, January 24 12:16:23 AKST
Magnitude 4.9, 58 miles SE of Westdahl Peak, January 10 22:19:05 AKST
Magnitude 4.9, 7 miles N of Larsen Bay, January 2 23:45:03 AKST
Magnitude 4.9, 58 miles SE of Westdahl Peak, January 10 22:19:05 AKST
Magnitude 4.9, 22 miles S of Cordova, January 25 13:02:01 AKST
Magnitude 4.8, 49 miles SW of Segula Peak, January 25 08:22:35 AKST
Magnitude 4.3, 13 miles SE of Port Graham, January 26 13:23:25 AKST
Magnitude 4.3, 24 miles S of Amchitka, January 5 15:25:48 AKST
Magnitude 4.2, 68 miles SE of Perryville, January 11 12:17:08 AKST

This report was compiled by N.Kozyreva

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.