California earthquakes

M2.1 earthquake 65 km WSW of Ferndale, California

A magnitude 2.1 earthquake struck 65 km WSW of Ferndale, California on Mon, Oct 4, 1982, 8:44 PM PDT (03:44 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M3.3 15 km WSW of Ferndale, California. This one was a foreshock.

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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
2.1 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1982-10-05 03:44:02 UTC
Depth
13.3 km (8.3 mi), shallow
Epicenter
40.401° N, 124.998° 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 2.6 km horizontally, 2.5 km in depth
Magnitude uncertainty
±0.23
Depth from
From location
Station coverage gap
279°, poorly surrounded by stations
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 81 in the 60 days after this one and 60 in the 30 days before it.

After

The first 60 of 81.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1079946. Read Thu, Oct 1, 2026, 5:23 AM UTC.