California earthquakes

M4.0 earthquake 8 km WSW of Cobb, California

A magnitude 4.0 earthquake struck 8 km WSW of Cobb, California on Sat, May 29, 1982, 6:02 AM PDT (13:02 UTC), 1 km (1 mi) below the surface.

Cobb forecastMore in California

Map

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

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The earthquake

Magnitude
4.0 (ml), light
Local time
UTC
1982-05-29 13:02:24 UTC
Depth
1.2 km (0.8 mi), shallow
Epicenter
38.801° N, 122.822° 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 0.1 km horizontally, 0.3 km in depth
Depth from
From location
Station coverage gap
25°
Stations used
54

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 127 in the 60 days after this one and 44 in the 30 days before it.

After

The first 60 of 127.

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1074859 (also filed as usp0001mk2). Read Tue, Sep 29, 2026, 11:12 AM UTC.