EarthquakeModerate

M4.0 earthquake - 40 km ESE of Nikolski, Alaska

Name: M4.0 earthquake - 40 km ESE of Nikolski, Alaska
Start: 2020-10-23T03:16:03.607+00:00
Location: 40 km ESE of Nikolski, Alaska

2186 d ago · 23 Oct 2020, 03:16 UTC 40 km ESE of Nikolski, Alaska

What happened

A magnitude 4 earthquake struck 40 km ESE of Nikolski, Alaska on 23 Oct 2020, 03:16 UTC at a depth of 35 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, 09:59 UTC

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