M2.1 earthquake Central California

A magnitude 2.1 earthquake struck in Central California on Wed, May 7, 1975, 9:33 AM PDT (16:33 UTC), 2 km (2 mi) below the surface.

A larger quake followed: M2.6 11 km NNE of Hollister, 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: 190 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 190.

From the USGS Earthquake Hazards Program and its partner networks, event nc1023790. Read Tue, Sep 22, 2026, 10:31 PM UTC.