M4.2 earthquake - 227 km SW of Adak, Alaska
2066 d ago · 19 Feb 2021, 09:08 UTC 227 km SW of Adak, Alaska
What happened
A magnitude 4.2 earthquake struck 227 km SW of Adak, Alaska on 19 Feb 2021, 09:08 UTC at a depth of 10 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, 10:07 UTC
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