M1.8 earthquake 10km S of Idyllwild, CA

A magnitude 1.8 earthquake struck 10km S of Idyllwild, CA on Tue, May 4, 1982, 1:22 AM PDT (08:22 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M4.8 1km SSW of Anza, 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: 198 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 198.

From the USGS Earthquake Hazards Program and its partner networks, event ci530039. Read Tue, Sep 22, 2026, 9:30 PM UTC.