California earthquakes

M3.6 earthquake 16 km NNW of Coalinga, California

A magnitude 3.6 earthquake struck 16 km NNW of Coalinga, California on Mon, Dec 19, 1983, 5:03 PM PST (01:03 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M3.8 15 km NNW of Coalinga, 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: 3.6 (md), minor
Local time: Mon, Dec 19, 1983, 5:03 PM PST
UTC: 1983-12-20 01:03:31 UTC
Depth: 7.3 km (4.6 mi), shallow
Epicenter: 36.280° N, 120.419° 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 0.1 km horizontally, 0.3 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 69°
Stations used: 51

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 197 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 197.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1108729 (also filed as ci27413, usp00020n0). Read Tue, Sep 22, 2026, 8:52 PM UTC.