M1.8 earthquake 10km NNW of Tehachapi, CA

A magnitude 1.8 earthquake struck 10km NNW of Tehachapi, CA on Fri, Apr 4, 1986, 10:38 PM PST (06:38 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.4 17km SE of Little Lake, 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: 144 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 144.

From the USGS Earthquake Hazards Program and its partner networks, event ci121102. Read Wed, Sep 23, 2026, 3:31 AM UTC.