California earthquakes

M4.0 earthquake 22 km SSW of Three Rocks, California

A magnitude 4.0 earthquake struck 22 km SSW of Three Rocks, California on Mon, Oct 25, 1982, 4:15 PM PDT (23:15 UTC), 11 km (7 mi) below the surface.

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The earthquake

Magnitude: 4.0 (ml), light
Local time: Mon, Oct 25, 1982, 4:15 PM PDT
UTC: 1982-10-25 23:15:53 UTC
Depth: 10.9 km (6.8 mi), shallow
Epicenter: 36.329° N, 120.514° 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 0.2 km horizontally, 0.4 km in depth
Depth from: From location
Station coverage gap: 88°
Stations used: 67

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 196 in the 60 days after this one and 102 in the 30 days before it.

After

The first 60 of 196.

Before

Earthquakes today California earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1080805 (also filed as usp0001qh6, ci511908). Read Wed, Sep 30, 2026, 4:55 AM UTC.