M2.4 earthquake 34 km W of Three Rocks, California

A magnitude 2.4 earthquake struck 34 km W of Three Rocks, California on Sun, Aug 25, 1985, 3:02 PM PDT (22:02 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.9 2 km WNW of Avenal, California. 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: 186 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 186.

From the USGS Earthquake Hazards Program and its partner networks, event nc53845. Read Tue, Sep 22, 2026, 9:25 PM UTC.