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M4.8 earthquake - 137 km ESE of Chignik, Alaska

Name: M4.8 earthquake - 137 km ESE of Chignik, Alaska
Start: 2021-10-01T14:12:52.596+00:00
Location: 137 km ESE of Chignik, Alaska

1842 d ago · 1 Oct 2021, 14:12 UTC 137 km ESE 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 4.8 earthquake struck 137 km ESE of Chignik, Alaska on 1 Oct 2021, 14:12 UTC at a depth of 45 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, 10:23 UTC

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