Weekly Seismicity Report For October 7, 2019 to October 13, 2019

During the week of October 7, 2019, the Alaska Earthquake Center reported 746 earthquakes within the state. The largest earthquake was magnitude 5.0 that occurred on October 11 at 18:44:23 AKST (October 12, 02:44:23 UTC), 181 miles SE of Kodiak. This event was an aftershock from the January 2018 magnitude 7.9 earthquake. 4 events were felt this week. The Eastern Brooks Range and Purcell Mountain swarms are still quite active, while the glacial calving events are decreasing as expected during this time of year.

Notable Events in Descending Order of Magnitude

Magnitude 5.0, 181 miles SE of Kodiak, October 11 17:44:24 AKST
Magnitude 4.0, 45 miles S of Tanaga Volcano, October 10 16:39:24 AKST
Magnitude 4.0, 34 miles SE of Yunaska Island, October 13 03:11:54 AKST
Magnitude 4.0, 17 miles NE of Slana, October 9 22:01:46 AKST
Magnitude 3.9, 43 miles SE of Yunaska Island, October 13 03:36:24 AKST
Magnitude 3.8, 57 miles W of Elfin Cove, October 12 06:59:51 AKST
Magnitude 3.7, 177 miles SE of Kodiak, October 12 02:54:34 AKST
Magnitude 3.5, 37 miles SE of Mt. Gareloi, October 9 16:55:02 AKST
Magnitude 3.5, 39 miles S of Tanaga Volcano, October 7 05:37:32 AKST
Magnitude 3.4, 42 miles NW of Tatitlek, October 6 14:28:20 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.