M1.6 earthquake 12km W of Anza, CA

A magnitude 1.6 earthquake struck 12km W of Anza, CA on Mon, Aug 19, 1985, 12:26 AM PDT (07:26 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M1.6 1km W of Yucca Valley, 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: 181 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 181.

From the USGS Earthquake Hazards Program and its partner networks, event ci109949. Read Wed, Sep 23, 2026, 3:36 AM UTC.