M2.5 earthquake 8 km E of Willits, California

A magnitude 2.5 earthquake struck 8 km E of Willits, California on Fri, Dec 19, 1986, 8:14 PM PST (04:14 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.0 6 km W of Cobb, 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: 182 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 182.

From the USGS Earthquake Hazards Program and its partner networks, event nc90867. Read Tue, Sep 22, 2026, 7:22 AM UTC.