M2.5 earthquake 22 km ENE of San Ardo, California

A magnitude 2.5 earthquake struck 22 km ENE of San Ardo, California on Mon, Jan 19, 1987, 4:24 AM PST (12:24 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.8 9 km ENE of Coalinga, 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: 196 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 196.

From the USGS Earthquake Hazards Program and its partner networks, event nc92813 (also filed as ci716063). Read Tue, Sep 22, 2026, 11:20 AM UTC.