M2.2 earthquake 6 km WNW of Cobb, California

A magnitude 2.2 earthquake struck 6 km WNW of Cobb, California on Sat, Jan 24, 1987, 5:55 PM PST (01:55 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M2.4 6 km E of Hopland, 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: 172 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 172.

From the USGS Earthquake Hazards Program and its partner networks, event nc93123. Read Tue, Sep 22, 2026, 12:10 PM UTC.