Monthly Seismicity Report For May 1, 2020 to May 31, 2020

During the month of May 2020, the Alaska Earthquake Center reported 3781 earthquakes within the state. The largest earthquake was magnitude 4.7 that occurred on May 9 at 06:02:04 AKST (May 9, 14:02:04 UTC), 41 miles S of Isanotski Peaks (Unimak Islands). All earthquakes of magnitude larger than 4.0 were located along the island chain from Kodiak in the east to Rat Islands in the west. NE Brooks Range, Purcell Mts and offshore Kodiak aftershock zones are continuing to be active as well as the glacials along the south-eastern shore of Alaska. Five events were felt in May.

Notable Events in Descending Order of Magnitude

Magnitude 4.7, 41 miles S of Isanotski Peaks, May 9 06:02:05 AKST
Magnitude 4.7, 129 miles SE of Perryville, May 20 09:13:23 AKST
Magnitude 4.5, 53 miles SE of Herbert Island, May 16 21:26:31 AKST
Magnitude 4.4, 58 miles SE of Herbert Island, May 16 08:06:50 AKST
Magnitude 4.4, 58 miles S of Akhiok, May 23 00:52:05 AKST
Magnitude 4.2, 36 miles SE of Semisopochnoi Island, May 11 14:53:27 AKST
Magnitude 4.2, 30 miles S of Atka Pass, May 17 11:09:34 AKST
Magnitude 4.2, 47 miles SE of Mt. Cleveland, May 16 02:06:09 AKST
Magnitude 4.2, 34 miles SW of Karluk, May 16 20:18:50 AKST
Magnitude 4.2, 59 miles SE of Atka, May 17 22:37:31 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.