M2.1 earthquake Central California

A magnitude 2.1 earthquake struck in Central California on Thu, Dec 19, 1985, 1:19 AM PST (09:19 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.7 4 km NNE of Tres Pinos, California. 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: 195 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 195.

From the USGS Earthquake Hazards Program and its partner networks, event nc61826. Read Wed, Sep 23, 2026, 2:36 AM UTC.