M2.0 earthquake 14 km WNW of Mad River, California

A magnitude 2.0 earthquake struck 14 km WNW of Mad River, California on Wed, Apr 1, 1981, 11:07 PM PST (07:07 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M2.4 18 km WNW of Manila, 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: 169 in the 60 days after this one and 30 in the 30 days before it.

The first 60 of 169.

From the USGS Earthquake Hazards Program and its partner networks, event nc1062009. Read Tue, Sep 22, 2026, 8:45 PM UTC.