M2.2 earthquake 2 km ENE of Windsor, California

A magnitude 2.2 earthquake struck 2 km ENE of Windsor, California on Wed, Jul 29, 1981, 7:26 AM PDT (14:26 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.6 5 km SW 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: 96 in the 60 days after this one and 61 in the 30 days before it.

The first 60 of 96.

From the USGS Earthquake Hazards Program and its partner networks, event nc1066077. Read Tue, Sep 22, 2026, 8:58 PM UTC.