M1.5 earthquake 28km ENE of Pine Valley, CA

A magnitude 1.5 earthquake struck 28km ENE of Pine Valley, CA on Wed, Jul 31, 1985, 2:30 AM PDT (09:30 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M3.2 33km NE of Ensenada, B.C., MX. 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: 184 in the 60 days after this one and 153 in the 30 days before it.

The first 60 of 184.

From the USGS Earthquake Hazards Program and its partner networks, event ci71616. Read Wed, Sep 30, 2026, 11:09 PM UTC.