EarthquakeModerate

M4.3 earthquake - Rat Islands, Aleutian Islands, Alaska

Name: M4.3 earthquake - Rat Islands, Aleutian Islands, Alaska
Start: 2021-03-18T09:56:20.808+00:00
Location: Rat Islands, Aleutian Islands, Alaska

2040 d ago · 18 Mar 2021, 09:56 UTC Rat Islands, Aleutian Islands, Alaska

What happened

A magnitude 4.3 earthquake struck Rat Islands, Aleutian Islands, Alaska on 18 Mar 2021, 09:56 UTC at a depth of 91 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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