California earthquakes

M2.0 earthquake 20 km SW of Three Rocks, California

A magnitude 2.0 earthquake struck 20 km SW of Three Rocks, California on Sat, May 18, 1985, 10:14 AM PDT (17:14 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M2.5 33 km NE of King City, 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
2.0 (md), micro
Local time
UTC
1985-05-18 17:14:42 UTC
Depth
14.8 km (9.2 mi), shallow
Epicenter
36.389° N, 120.576° 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 0.4 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
104°
Stations used
24

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 135 in the 60 days after this one and 61 in the 30 days before it.

After

The first 60 of 135.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc48063. Read Tue, Sep 22, 2026, 9:25 PM UTC.