EarthquakeModerate

M4.0 earthquake - 233 km SSE of Perryville, Alaska

Name: M4.0 earthquake - 233 km SSE of Perryville, Alaska
Start: 2021-07-30T07:56:00.422+00:00
Location: 233 km SSE of Perryville, Alaska

1905 d ago · 30 Jul 2021, 07:56 UTC 233 km SSE of Perryville, Alaska

What happened

A magnitude 4 earthquake struck 233 km SSE of Perryville, Alaska on 30 Jul 2021, 07:56 UTC at a depth of 24 km.

Earthquakes of this size are classed as Light. Widely felt nearby; objects may shake or fall. Significant damage is unusual. This was a shallow earthquake, which tends to be felt more strongly at the surface.

Timeline

First reported by USGS
17 Oct 2026, 10:19 UTC

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