M1.7 earthquake 10km NNW of Grapevine, CA

A magnitude 1.7 earthquake struck 10km NNW of Grapevine, CA on Mon, Mar 31, 1986, 4:53 AM PST (12:53 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.3 19km NW of Tehachapi, 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: 72 in the 60 days after this one and 37 in the 30 days before it.

The first 60 of 72.

From the USGS Earthquake Hazards Program and its partner networks, event ci120458. Read Sat, Oct 3, 2026, 5:48 PM UTC.