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M5.1 earthquake - 200 km SE of Chignik, Alaska

Name: M5.1 earthquake - 200 km SE of Chignik, Alaska
Start: 2021-09-16T23:05:07.936+00:00
Location: 200 km SE of Chignik, Alaska

1856 d ago · 16 Sept 2021, 23:05 UTC 200 km SE of Chignik, 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 5.1 earthquake struck 200 km SE of Chignik, Alaska on 16 Sept 2021, 23:05 UTC at a depth of 33 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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