California earthquakes

M2.0 earthquake 41 km SW of Ferndale, California

A magnitude 2.0 earthquake struck 41 km SW of Ferndale, California on Fri, Oct 11, 1985, 4:43 PM PDT (23:43 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M3.3 37 km SW of Ferndale, 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
2.0 (md), micro
Local time
UTC
1985-10-11 23:43:26 UTC
Depth
22.9 km (14.2 mi), shallow
Epicenter
40.360° N, 124.663° 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 2.0 km horizontally, 1.7 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
249°, poorly surrounded by stations
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 42 in the 60 days after this one and 21 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc57382. Read Tue, Sep 22, 2026, 8:43 PM UTC.