EarthquakeModerate

M4.5 earthquake - 87 km SSW of Nikolski, Alaska

Name: M4.5 earthquake - 87 km SSW of Nikolski, Alaska
Start: 2023-10-20T19:39:39.122+00:00
Location: 87 km SSW of Nikolski, Alaska

1093 d ago · 20 Oct 2023, 19:39 UTC 87 km SSW of Nikolski, Alaska

What happened

A magnitude 4.5 earthquake struck 87 km SSW of Nikolski, Alaska on 20 Oct 2023, 19:39 UTC at a depth of 21 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, 11:11 UTC

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