M4.0 earthquake - 97 km S of Adak, Alaska
2187 d ago · 21 Oct 2020, 08:33 UTC 97 km S of Adak, Alaska
What happened
A magnitude 4 earthquake struck 97 km S of Adak, Alaska on 21 Oct 2020, 08:33 UTC at a depth of 27 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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