EarthquakeModerate

M4.0 earthquake - Rat Islands, Aleutian Islands, Alaska

Name: M4.0 earthquake - Rat Islands, Aleutian Islands, Alaska
Start: 2017-01-20T13:04:34.36+00:00
Location: Rat Islands, Aleutian Islands, Alaska

3557 d ago · 20 Jan 2017, 13:04 UTC Rat Islands, Aleutian Islands, Alaska

What happened

A magnitude 4 earthquake struck Rat Islands, Aleutian Islands, Alaska on 20 Jan 2017, 13:04 UTC at a depth of 92 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, 08:27 UTC

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