M1.6 earthquake 6km SSE of Tehachapi, CA

A magnitude 1.6 earthquake struck 6km SSE of Tehachapi, CA on Fri, Apr 20, 1984, 4:16 PM PST (00:16 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.0 17km NNW of Fillmore, 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: 119 in the 60 days after this one and 161 in the 30 days before it.

The first 60 of 119.

From the USGS Earthquake Hazards Program and its partner networks, event ci37236. Read Mon, Sep 28, 2026, 3:32 PM UTC.