California earthquakes

M3.5 earthquake 6 km NNE of Mesa, California

A magnitude 3.5 earthquake struck 6 km NNE of Mesa, California on Thu, Nov 13, 1986, 10:45 AM PST (18:45 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.8 7 km NNE of Mesa, 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: 3.5 (ml), minor
Local time: Thu, Nov 13, 1986, 10:45 AM PST
UTC: 1986-11-13 18:45:21 UTC
Depth: 3.6 km (2.3 mi), shallow
Epicenter: 37.476° N, 118.511° 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: 38°
Stations used: 46

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc87973 (also filed as ci712937, usp0002zyv). Read Tue, Sep 22, 2026, 4:36 AM UTC.