M1.6 earthquake 6 km W of Cobb, California

A magnitude 1.6 earthquake struck 6 km W of Cobb, California on Tue, Jun 11, 1985, 9:24 PM PDT (04:24 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M1.9 9 km W of Redwood Valley, 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: 178 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 178.

From the USGS Earthquake Hazards Program and its partner networks, event nc49406. Read Tue, Sep 22, 2026, 5:24 PM UTC.