M2.1 earthquake 18km NW of Tehachapi, CA

A magnitude 2.1 earthquake struck 18km NW of Tehachapi, CA on Mon, Apr 9, 1979, 3:56 AM PST (11:56 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M2.4 16km NNE of Inyokern, 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: 83 in the 60 days after this one and 28 in the 30 days before it.

The first 60 of 83.

From the USGS Earthquake Hazards Program and its partner networks, event ci3348316. Read Wed, Sep 23, 2026, 3:36 AM UTC.