EarthquakeModerate

M4.2 earthquake - 290 km WSW of Adak, Alaska

Name: M4.2 earthquake - 290 km WSW of Adak, Alaska
Start: 2016-08-20T22:45:32+00:00
Location: 290 km WSW of Adak, Alaska

3710 d ago · 20 Aug 2016, 22:45 UTC 290 km WSW of Adak, Alaska

What happened

A magnitude 4.2 earthquake struck 290 km WSW of Adak, Alaska on 20 Aug 2016, 22:45 UTC at a depth of 21 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, 08:17 UTC

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