M1.5 earthquake 12km SE of Anza, CA

A magnitude 1.5 earthquake struck 12km SE of Anza, CA on Tue, Apr 28, 1981, 9:30 PM PDT (04:30 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.6 3km WNW of Lakeland Village, 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: 189 in the 60 days after this one and at least 200 in the 30 days before it.

The first 60 of 189.

From the USGS Earthquake Hazards Program and its partner networks, event ci515653. Read Wed, Sep 30, 2026, 5:05 AM UTC.