M2.1 earthquake 10 km ESE of Gilroy, California

A magnitude 2.1 earthquake struck 10 km ESE of Gilroy, California on Thu, Feb 28, 1980, 4:31 AM PST (12:31 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.2 4 km ESE of Sunol, 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: 186 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 186.

From the USGS Earthquake Hazards Program and its partner networks, event nc1051249. Read Tue, Sep 22, 2026, 8:54 PM UTC.