M1.6 earthquake 6 km W of Cobb, California

A magnitude 1.6 earthquake struck 6 km W of Cobb, California on Wed, Feb 6, 1985, 3:38 PM PST (23:38 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M1.8 6 km NW of North Lakeport, 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: 188 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 188.

From the USGS Earthquake Hazards Program and its partner networks, event nc1125671. Read Tue, Sep 22, 2026, 8:41 PM UTC.