Weekly Seismicity Report For May 20, 2019 to May 26, 2019

During the week of May 20, 2019, the Alaska Earthquake Center reported 811 earthquakes within the state. The largest earthquake was magnitude 6.1 that occurred on May 23 at 00:45:16 AKST (May 23, 08:45:16 UTC), 49 miles SE of Mt. Gareloi, 128 miles ENE of Adak. Three events were felt, two of them were aftershocks of M7.1 Anchorage earthquake on November 30, 2018 on May 20th and May 22nd. The seismic activity of notice was in Western Aleutians and in Cook Inland. The swarm at Purcell Mountains and offshore Kodiak aftershocks are still ongoing. 

Notable Events in Descending Order of Magnitude

Magnitude 6.1, 49 miles SE of Mt. Gareloi, May 22 22:45:17 AKST
Magnitude 4.4, 11 miles SE of Chagulak Island, May 22 19:20:49 AKST
Magnitude 4.2, 21 miles NW of Amukta Pass, May 20 00:18:06 AKST
Magnitude 3.8, 22 miles SE of Augustine Volcano, May 21 00:12:30 AKST
Magnitude 3.6, 8 miles NW of Chugiak, May 20 17:12:56 AKST
Magnitude 3.5, 55 miles SE of Akutan, May 25 07:13:30 AKST
Magnitude 3.5, 57 miles S of Adak, May 23 03:05:43 AKST
Magnitude 3.5, 36 miles S of Nikolski, May 21 00:01:47 AKST
Magnitude 3.4, 47 miles SE of Haines Junction, May 22 18:44:24 AKST
Magnitude 3.3, 148 miles SE of Old Harbor, May 25 23:49:35 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.