M4.8 earthquake 16km NNW of Tehachapi, CA

A magnitude 4.8 earthquake struck 16km NNW of Tehachapi, CA on Wed, Jul 23, 1952, 12:37 AM GMT-7 (07:37 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M5.5 13km ENE of Grapevine, CA. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

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 1.8 and up: 190 in the 60 days after this one and 8 in the 30 days before it.

The first 60 of 190.

From the USGS Earthquake Hazards Program and its partner networks, event ci3318257 (also filed as ushis1826). Read Tue, Sep 22, 2026, 10:21 AM UTC.