M5.6 earthquake - 133 km SE of Old Harbor, Alaska
410 d ago · 1 Sept 2025, 11:02 UTC 133 km SE of Old Harbor, Alaska
A tsunami flag was raised for this event. This does not mean a tsunami occurred. Always follow official tsunami warning centres and local authorities.
What happened
A magnitude 5.6 earthquake struck 133 km SE of Old Harbor, Alaska on 1 Sept 2025, 11:02 UTC at a depth of 12 km.
Earthquakes of this size are classed as Moderate. Can damage poorly built structures close to the epicentre. This was a shallow earthquake, which tends to be felt more strongly at the surface.
Timeline
First reported by USGS
16 Oct 2026, 20:47 UTC
Community
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