California earthquakes

M1.8 earthquake 40km S of Hawthorne, NV

A magnitude 1.8 earthquake struck 40km S of Hawthorne, NV on Fri, Apr 3, 1981, 11:55 AM PST (19:55 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M2.0 3km NE of Mammoth Lakes, CA. This one was a foreshock.

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

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The earthquake

Magnitude
1.8 (mc), micro
Local time
UTC
1981-04-03 19:55:27 UTC
Depth
-2.4 km (-1.5 mi), shallow
Epicenter
38.167° N, 118.579° 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 5.3 km horizontally, 31.6 km in depth
Depth from
Operator assigned
Station coverage gap
331°, poorly surrounded by stations
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci516072. Read Tue, Sep 22, 2026, 5:16 PM UTC.