California earthquakes

M3.2 earthquake 7 km W of Cobb, California

A magnitude 3.2 earthquake struck 7 km W of Cobb, California on Mon, Apr 30, 1984, 9:00 PM PDT (04:00 UTC), 4 km (2 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
3.2 (md), minor
Local time
UTC
1984-05-01 04:00:54 UTC
Depth
3.7 km (2.3 mi), shallow
Epicenter
38.813° N, 122.807° 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 0.2 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
35°
Stations used
29

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 169 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 169.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc17327. Read Tue, Sep 22, 2026, 8:58 PM UTC.