M4.0 earthquake - 26 km NNW of Atka, Alaska
2216 d ago · 23 Sept 2020, 01:17 UTC 26 km NNW of Atka, Alaska
What happened
A magnitude 4 earthquake struck 26 km NNW of Atka, Alaska on 23 Sept 2020, 01:17 UTC at a depth of 122 km.
Earthquakes of this size are classed as Light. Widely felt nearby; objects may shake or fall. Significant damage is unusual. This was an intermediate-depth earthquake, so shaking is spread over a wider, gentler area.
Timeline
First reported by USGS
17 Oct 2026, 09:57 UTC
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