California earthquakes

M1.6 earthquake 13km NNE of Lamont, CA

A magnitude 1.6 earthquake struck 13km NNE of Lamont, CA on Mon, Jul 27, 1981, 11:14 AM PDT (18:14 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.8 17km NNW of Tehachapi, CA. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.6 (mc), micro
Local time
UTC
1981-07-27 18:14:44 UTC
Depth
4.8 km (3.0 mi), shallow
Epicenter
35.365° N, 118.844° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.0 km horizontally, 31.6 km in depth
Depth from
Operator assigned
Station coverage gap
144°
Stations used
15

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 31 in the 60 days after this one and 28 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci520168. Read Wed, Sep 30, 2026, 6:51 AM UTC.