M1.9 earthquake 32km NE of Boron, CA

A magnitude 1.9 earthquake struck 32km NE of Boron, CA on Wed, Jul 15, 1981, 10:54 AM PDT (17:54 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.0 21km NE of Fort Irwin, CA. 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: 37 in the 60 days after this one and 27 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ci519541. Read Wed, Sep 30, 2026, 2:56 PM UTC.