EarthquakeModerate

M4.2 earthquake - 81 km SE of Atka, Alaska

Name: M4.2 earthquake - 81 km SE of Atka, Alaska
Start: 2021-05-22T08:56:11.366+00:00
Location: 81 km SE of Atka, Alaska

1975 d ago · 22 May 2021, 08:56 UTC 81 km SE of Atka, Alaska

What happened

A magnitude 4.2 earthquake struck 81 km SE of Atka, Alaska on 22 May 2021, 08:56 UTC at a depth of 41 km.

Earthquakes of this size are classed as Light. Widely felt nearby; objects may shake or fall. Significant damage is unusual. This was a shallow earthquake, which tends to be felt more strongly at the surface.

Timeline

First reported by USGS
17 Oct 2026, 10:15 UTC

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