M2.3 earthquake 6km WNW of Olancha, CA

A magnitude 2.3 earthquake struck 6km WNW of Olancha, CA on Fri, Nov 27, 1981, 4:34 AM PST (12:34 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.3 13km ENE of Coso Junction, 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: 107 in the 60 days after this one and 27 in the 30 days before it.

The first 60 of 107.

From the USGS Earthquake Hazards Program and its partner networks, event ci102328. Read Tue, Sep 22, 2026, 10:59 AM UTC.