M4.0 earthquake - 110 km SSW of Unalaska, Alaska
1245 d ago · 21 May 2023, 10:24 UTC 110 km SSW of Unalaska, Alaska
What happened
A magnitude 4 earthquake struck 110 km SSW of Unalaska, Alaska on 21 May 2023, 10:24 UTC at a depth of 40 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, 11:03 UTC
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