M3.0 earthquake 13 km W of Ruth, California

A magnitude 3.0 earthquake struck 13 km W of Ruth, California on Thu, May 28, 1981, 7:55 AM PDT (14:55 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M3.7 11 km SW of Willow Creek, 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: 142 in the 60 days after this one and 57 in the 30 days before it.

The first 60 of 142.

From the USGS Earthquake Hazards Program and its partner networks, event nc1064097. Read Tue, Sep 22, 2026, 10:00 AM UTC.