M1.7 earthquake 9km NNW of Cabazon, CA

A magnitude 1.7 earthquake struck 9km NNW of Cabazon, CA on Mon, Oct 3, 1977, 8:34 AM PDT (15:34 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.6 8km NNW of Foothill Ranch, 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: 152 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 152.

From the USGS Earthquake Hazards Program and its partner networks, event ci3335037. Read Tue, Sep 22, 2026, 8:55 PM UTC.