Weekly Seismicity Report For January 20, 2020 to January 26, 2020

During the week of January 20, 2020, the Alaska Earthquake Center reported 1,292 earthquakes within the state. 6 events were felt around the state. This was a very busy week with the largest earthquake a magnitude 6.2 that occurred on January 22 at 20:53:01 AKST (January 23, 05:53:01 UTC), 14 miles E of Tanaga Volcano. There was a separate magnitude 5.7 event southeast of Amchitka 3 days later. Both contributed to a vigorous aftershock sequence with several magnitude 4.5 and above events.

Notable Events in Descending Order of Magnitude

Magnitude 6.2, 14 miles E of Tanaga Volcano, January 22 20:53:02 AKST
Magnitude 5.7, 58 miles SE of Amchitka, January 25 21:31:55 AKST
Magnitude 5.6, 64 miles SE of Amchitka, January 26 00:12:07 AKST
Magnitude 5.4, 61 miles SE of Amchitka, January 26 13:33:36 AKST
Magnitude 5.4, 60 miles SE of Amchitka, January 26 13:33:36 AKST
Magnitude 5.2, 58 miles SE of Amchitka, January 25 18:57:19 AKST
Magnitude 5.1, 61 miles SE of Amchitka, January 26 00:14:03 AKST
Magnitude 5.0, 59 miles SE of Amchitka, January 25 21:40:50 AKST
Magnitude 4.9, 61 miles SE of Amchitka, January 25 22:24:05 AKST
Magnitude 4.5, 63 miles SE of Amchitka, January 25 23:11:56 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.