M1.6 earthquake 14km SSE of Anza, CA

A magnitude 1.6 earthquake struck 14km SSE of Anza, CA on Sat, Jul 28, 1984, 11:59 PM PDT (06:59 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M1.7 24km SSW of La Quinta, 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: 190 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 190.

From the USGS Earthquake Hazards Program and its partner networks, event ci46331. Read Tue, Sep 22, 2026, 10:28 PM UTC.