California earthquakes

M3.7 earthquake 76 km W of Ferndale, California

A magnitude 3.7 earthquake struck 76 km W of Ferndale, California on Fri, Oct 22, 1976, 7:16 PM PDT (02:16 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M6.3 67 km W of Trinidad, California. This one was a foreshock.

Ferndale forecastMore in California

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.7 (ml), minor
Local time
UTC
1976-10-23 02:16:15 UTC
Depth
6.8 km (4.3 mi), shallow
Epicenter
40.458° N, 125.158° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 7.9 km horizontally, 8.6 km in depth
Depth from
From location
Station coverage gap
332°, poorly surrounded by stations
Stations used
13

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 126 in the 60 days after this one and 36 in the 30 days before it.

After

The first 60 of 126.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1032021 (also filed as usp0000k04). Read Sun, Sep 27, 2026, 11:46 AM UTC.