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M5.3 earthquake - 155 km SE of Chignik, Alaska

Name: M5.3 earthquake - 155 km SE of Chignik, Alaska
Start: 2021-07-29T16:09:11.784+00:00
Location: 155 km SE of Chignik, Alaska

1905 d ago · 29 Jul 2021, 16:09 UTC 155 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 5.3 earthquake struck 155 km SE of Chignik, Alaska on 29 Jul 2021, 16:09 UTC at a depth of 36 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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