California earthquakes

M2.4 earthquake 55 km WSW of Ferndale, California

A magnitude 2.4 earthquake struck 55 km WSW of Ferndale, California on Mon, Oct 11, 1982, 2:20 AM PDT (09:20 UTC), 5 km (3 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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Map

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

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The earthquake

Magnitude
2.4 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1982-10-11 09:20:00 UTC
Depth
5.3 km (3.3 mi), shallow
Epicenter
40.336° N, 124.834° 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 14.1 km horizontally, 12.2 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
309°, poorly surrounded by stations
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 91 in the 60 days after this one and 56 in the 30 days before it.

After

The first 60 of 91.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1080175. Read Thu, Oct 1, 2026, 3:07 AM UTC.