California earthquakes

M1.7 earthquake 17 km NNE of Trinity Village, California

A magnitude 1.7 earthquake struck 17 km NNE of Trinity Village, California on Thu, Jan 1, 1981, 1:52 AM PST (09:52 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.3 7 km NNE of Myers Flat, California. 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: 1.7 (md), micro
Local time: Thu, Jan 1, 1981, 1:52 AM PST
UTC: 1981-01-01 09:52:24 UTC
Depth: 4.6 km (2.9 mi), shallow
Epicenter: 41.021° N, 123.452° W
Region: California
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 8.2 km horizontally, 20.1 km in depth
Depth from: From location
Station coverage gap: 305°, poorly surrounded by stations
Stations used: 3

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 71 in the 60 days after this one and 55 in the 30 days before it.

After

The first 60 of 71.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1058769. Read Tue, Sep 22, 2026, 10:27 AM UTC.