M2.3 earthquake 12km E of Coso Junction, CA

A magnitude 2.3 earthquake struck 12km E of Coso Junction, CA on Sun, Dec 13, 1981, 12:21 AM PST (08:21 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M3.8 25km NNW of Tehachapi, CA. This one was a foreshock.

Map

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

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 119 in the 60 days after this one and 51 in the 30 days before it.

The first 60 of 119.

From the USGS Earthquake Hazards Program and its partner networks, event ci103100. Read Wed, Sep 30, 2026, 9:53 PM UTC.