M2.3 earthquake 12km SSW of Olancha, CA

A magnitude 2.3 earthquake struck 12km SSW of Olancha, CA on Wed, Oct 21, 1981, 5:07 PM PDT (00:07 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.8 30km ESE of Lake Isabella, 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: 126 in the 60 days after this one and 17 in the 30 days before it.

The first 60 of 126.

From the USGS Earthquake Hazards Program and its partner networks, event ci525927. Read Wed, Sep 23, 2026, 10:54 PM UTC.