M1.8 earthquake 19km E of Pine Valley, CA

A magnitude 1.8 earthquake struck 19km E of Pine Valley, CA on Thu, Apr 23, 1981, 6:56 AM PST (14:56 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M5.8 The 1981 Westmorland, California Earthquake. 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: 200 in the 60 days after this one and 123 in the 30 days before it.

The first 60 of 200.

From the USGS Earthquake Hazards Program and its partner networks, event ci3262983. Read Wed, Sep 30, 2026, 6:15 AM UTC.