EarthquakeModerate

M4.3 earthquake - 225 km W of Adak, Alaska

Name: M4.3 earthquake - 225 km W of Adak, Alaska
Start: 2021-03-11T05:46:38.251+00:00
Location: 225 km W of Adak, Alaska

2047 d ago · 11 Mar 2021, 05:46 UTC 225 km W of Adak, Alaska

What happened

A magnitude 4.3 earthquake struck 225 km W of Adak, Alaska on 11 Mar 2021, 05:46 UTC at a depth of 158 km.

Earthquakes of this size are classed as Light. Widely felt nearby; objects may shake or fall. Significant damage is unusual. This was an intermediate-depth earthquake, so shaking is spread over a wider, gentler area.

Timeline

First reported by USGS
17 Oct 2026, 10:09 UTC

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