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M5.6 earthquake - 115 km SSE of Perryville, Alaska

Name: M5.6 earthquake - 115 km SSE of Perryville, Alaska
Start: 2021-10-31T16:37:46.017+00:00
Location: 115 km SSE of Perryville, Alaska

1811 d ago · 31 Oct 2021, 16:37 UTC 115 km SSE of Perryville, Alaska

A tsunami flag was raised for this event. This does not mean a tsunami occurred. Always follow official tsunami warning centres and local authorities.

What happened

A magnitude 5.6 earthquake struck 115 km SSE of Perryville, Alaska on 31 Oct 2021, 16:37 UTC at a depth of 25 km.

Earthquakes of this size are classed as Moderate. Can damage poorly built structures close to the epicentre. This was a shallow earthquake, which tends to be felt more strongly at the surface.

Timeline

First reported by USGS
16 Oct 2026, 20:47 UTC

Community

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