M1.6 earthquake 9 km ESE of Willits, California

A magnitude 1.6 earthquake struck 9 km ESE of Willits, California on Fri, Apr 6, 1984, 5:45 AM PST (13:45 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M2.1 5 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: 179 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 179.

From the USGS Earthquake Hazards Program and its partner networks, event nc1113525. Read Tue, Sep 22, 2026, 9:43 PM UTC.