California earthquakes

M3.2 earthquake 21 km SSW of Three Rocks, California

A magnitude 3.2 earthquake struck 21 km SSW of Three Rocks, California on Wed, Oct 27, 1982, 2:29 PM PDT (21:29 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.7 16 km ESE of Tres Pinos, 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: 3.2 (md), minor
Local time: Wed, Oct 27, 1982, 2:29 PM PDT
UTC: 1982-10-27 21:29:38 UTC
Depth: 11.1 km (6.9 mi), shallow
Epicenter: 36.331° N, 120.508° 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, 0.4 km in depth
Magnitude uncertainty: ±0.14
Depth from: From location
Station coverage gap: 91°
Stations used: 66

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 157 in the 60 days after this one and 130 in the 30 days before it.

After

The first 60 of 157.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1081023 (also filed as ci512008, usp0001qjh). Read Mon, Sep 28, 2026, 4:25 AM UTC.