California earthquakes

M2.5 earthquake 35 km SSW of Ferndale, California

A magnitude 2.5 earthquake struck 35 km SSW of Ferndale, California on Mon, May 10, 1982, 6:34 PM PDT (01:34 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M2.6 8 km SW of Burnt Ranch, California. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.5 (md), micro
Local time
UTC
1982-05-11 01:34:21 UTC
Depth
20.4 km (12.7 mi), shallow
Epicenter
40.302° N, 124.486° 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 1.1 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
242°, poorly surrounded by stations
Stations used
25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 99 in the 60 days after this one and 46 in the 30 days before it.

After

The first 60 of 99.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1074344. Read Tue, Sep 22, 2026, 9:34 PM UTC.