California earthquakes

M4.7 earthquake 14 km NE of Mesa, California

A magnitude 4.7 earthquake struck 14 km NE of Mesa, California on Mon, Jul 21, 1986, 8:19 AM PDT (15:19 UTC), 0 km (0 mi) below the surface.

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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: 4.7 (ml), light
Local time: Mon, Jul 21, 1986, 8:19 AM PDT
UTC: 1986-07-21 15:19:34 UTC
Depth: -0.5 km (-0.3 mi), shallow
Epicenter: 37.525° N, 118.438° 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 0.7 km horizontally, 2.6 km in depth
Depth from: From location
Station coverage gap: 162°
Stations used: 49

Nearest places

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

Nearby

Within 100 km, magnitude 1.7 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 nc10085769 (also filed as ushis3976, ci602784, usp0002w9z). Read Tue, Sep 22, 2026, 8:42 PM UTC.