EarthquakeMajor

M6.4 earthquake - 104 km SSE of Ugashik, Alaska

Name: M6.4 earthquake - 104 km SSE of Ugashik, Alaska
Start: 1979-05-20T08:14:00.1+00:00
Location: 104 km SSE of Ugashik, Alaska

17316 d ago · 20 May 1979, 08:14 UTC 104 km SSE of Ugashik, Alaska

What happened

A magnitude 6.4 earthquake struck 104 km SSE of Ugashik, Alaska on 20 May 1979, 08:14 UTC at a depth of 71 km.

Earthquakes of this size are classed as Strong. Can cause damage in populated areas up to tens of kilometres away. This was an intermediate-depth earthquake, so shaking is spread over a wider, gentler area.

Timeline

First reported by USGS
16 Oct 2026, 20:46 UTC

Community

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