M1.6 earthquake 11km W of Anza, CA

A magnitude 1.6 earthquake struck 11km W of Anza, CA on Thu, May 23, 1985, 1:04 AM PDT (08:04 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M2.1 7km NE of Cabazon, 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: 184 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 184.

From the USGS Earthquake Hazards Program and its partner networks, event ci67006. Read Wed, Sep 23, 2026, 5:23 AM UTC.