California earthquakes

M2.2 earthquake 18 km SSW of Ferndale, California

A magnitude 2.2 earthquake struck 18 km SSW of Ferndale, California on Sun, Jul 4, 1982, 5:16 PM PDT (00:16 UTC), 27 km (17 mi) below the surface.

A larger quake followed: M2.7 36 km WNW of Samoa, 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
2.2 (md), micro
Local time
UTC
1982-07-05 00:16:46 UTC
Depth
27.4 km (17.0 mi), shallow
Epicenter
40.414° N, 124.314° 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 0.6 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
198°, poorly surrounded by stations
Stations used
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 119 in the 60 days after this one and 51 in the 30 days before it.

After

The first 60 of 119.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1075950. Read Wed, Sep 23, 2026, 3:34 AM UTC.