M1.8 earthquake 1km NE of Anza, CA

A magnitude 1.8 earthquake struck 1km NE of Anza, CA on Thu, Aug 12, 1982, 2:15 AM PDT (09:15 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.5 5km SW of Salton City, 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: 195 in the 60 days after this one and 109 in the 30 days before it.

The first 60 of 195.

From the USGS Earthquake Hazards Program and its partner networks, event ci506447. Read Wed, Sep 30, 2026, 1:45 PM UTC.