California earthquakes

M2.2 earthquake 65 km W of Ferndale, California

A magnitude 2.2 earthquake struck 65 km W of Ferndale, California on Fri, Apr 9, 1982, 8:28 AM PST (16:28 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M3.9 45 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
2.2 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1982-04-09 16:28:59 UTC
Depth
13.5 km (8.4 mi), shallow
Epicenter
40.640° N, 125.038° 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 10.2 km horizontally, 13.0 km in depth
Depth from
From location
Station coverage gap
317°, 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: 85 in the 60 days after this one and 40 in the 30 days before it.

After

The first 60 of 85.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1073601. Read Thu, Oct 1, 2026, 8:53 AM UTC.