California earthquakes

M2.9 earthquake 1 km NNE of Round Valley, California

A magnitude 2.9 earthquake struck 1 km NNE of Round Valley, California on Sun, Oct 10, 1982, 12:24 PM PDT (19:24 UTC), 14 km (9 mi) below the surface.

A larger quake followed: M3.1 12 km SW of Aspen Springs, 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: 2.9 (md), micro
Local time: Sun, Oct 10, 1982, 12:24 PM PDT
UTC: 1982-10-10 19:24:03 UTC
Depth: 13.9 km (8.6 mi), shallow
Epicenter: 37.436° N, 118.579° 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 0.3 km horizontally, 0.8 km in depth
Magnitude uncertainty: ±0.62
Depth from: From location
Station coverage gap: 142°
Stations used: 18

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 nc1080156 (also filed as ci508763). Read Tue, Sep 22, 2026, 4:54 PM UTC.