California earthquakes

M1.6 earthquake 13 km E of Comptche, California

A magnitude 1.6 earthquake struck 13 km E of Comptche, California on Wed, Dec 24, 1986, 9:26 PM PST (05:26 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M1.7 9 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
1986-12-25 05:26:03 UTC
Depth
2.6 km (1.6 mi), shallow
Epicenter
39.270° N, 123.438° 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 0.5 km horizontally, 10.7 km in depth
Magnitude uncertainty
±0.23
Depth from
From location
Station coverage gap
91°
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: 170 in the 60 days after this one and 29 in the 30 days before it.

After

The first 60 of 170.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1146111. Read Tue, Sep 22, 2026, 10:16 AM UTC.