California earthquakes

M1.6 earthquake 11 km W of Jenner, California

A magnitude 1.6 earthquake struck 11 km W of Jenner, California on Sun, Nov 6, 1983, 2:11 AM PST (10:11 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.1 7 km W of Cobb, 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
1.6 (md), micro
Local time
UTC
1983-11-06 10:11:50 UTC
Depth
5.8 km (3.6 mi), shallow
Epicenter
38.437° N, 123.252° 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 1.0 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
267°, poorly surrounded by stations
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 185 in the 60 days after this one and 87 in the 30 days before it.

After

The first 60 of 185.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1106325. Read Tue, Sep 29, 2026, 10:05 PM UTC.