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M5.6 earthquake near Eureka, California

Name: M5.6 earthquake near Eureka, California
Start: 2023-05-21T18:44:01.4+00:00
Location: 108km W of Petrolia, CA

1244 d ago · 21 May 2023, 18:44 UTC 108km W of Petrolia, CA

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 108km W of Petrolia, CA on 21 May 2023, 18:44 UTC at a depth of 10 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.

The nearest town in our records is Eureka, about 128 km away in California, United States.

Timeline

First reported by USGS
16 Oct 2026, 20:47 UTC

Community

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