California earthquakes

M2.1 earthquake 3km SW of Willowbrook, CA

A magnitude 2.1 earthquake struck 3km SW of Willowbrook, CA on Sun, Dec 5, 1982, 11:47 PM PST (07:47 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M4.0 4km N of Fontana, CA. This one was a foreshock.

West Rancho Dominguez forecastMore in California

Map

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

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The earthquake

Magnitude
2.1 (mc), micro
Local time
UTC
1982-12-06 07:47:29 UTC
Depth
11.6 km (7.2 mi), shallow
Epicenter
33.896° N, 118.276° 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.

Depth from
From location
Station coverage gap
113°
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 89 in the 60 days after this one and 37 in the 30 days before it.

After

The first 60 of 89.

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci503936. Read Mon, Sep 28, 2026, 7:36 PM UTC.