California earthquakes

M2.4 earthquake 89 km W of Ferndale, California

A magnitude 2.4 earthquake struck 89 km W of Ferndale, California on Sat, Apr 17, 1982, 11:41 AM PST (19:41 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.3 10 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
2.4 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1982-04-17 19:41:45 UTC
Depth
4.9 km (3.0 mi), shallow
Epicenter
40.428° N, 125.303° 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 18.7 km horizontally, 22.1 km in depth
Depth from
From location
Station coverage gap
321°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 77 in the 60 days after this one and 32 in the 30 days before it.

After

The first 60 of 77.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1073781. Read Sat, Oct 3, 2026, 4:32 PM UTC.