M1.5 earthquake 18km NNE of Pine Valley, CA

A magnitude 1.5 earthquake struck 18km NNE of Pine Valley, CA on Wed, Jan 23, 1985, 10:31 AM PST (18:31 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.8 6km W of Progreso, 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: 172 in the 60 days after this one and 183 in the 30 days before it.

The first 60 of 172.

From the USGS Earthquake Hazards Program and its partner networks, event ci59360. Read Wed, Sep 30, 2026, 7:07 PM UTC.