M2.3 earthquake 9 km ENE of Gilroy, California

A magnitude 2.3 earthquake struck 9 km ENE of Gilroy, California on Wed, Nov 28, 1979, 10:41 PM PST (06:41 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M2.9 10 km ENE of Blackhawk, 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: 200 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 200.

From the USGS Earthquake Hazards Program and its partner networks, event nc1049079. Read Tue, Sep 22, 2026, 8:45 PM UTC.