M1.6 earthquake 6km S of Mentone, CA

A magnitude 1.6 earthquake struck 6km S of Mentone, CA on Tue, Jul 23, 1985, 5:38 PM PDT (00:38 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M1.6 12km NNE of Idyllwild, 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: 174 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 174.

From the USGS Earthquake Hazards Program and its partner networks, event ci71234. Read Tue, Sep 22, 2026, 10:23 PM UTC.