California earthquakes

M2.2 earthquake 29 km WNW of Three Rocks, California

A magnitude 2.2 earthquake struck 29 km WNW of Three Rocks, California on Wed, Apr 3, 2002, 2:33 AM PST (10:33 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M4.9 5 km SSW of Gilroy, 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
2.2 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2002-04-03 10:33:38 UTC
Depth
13.1 km (8.1 mi), shallow
Epicenter
36.556° N, 120.717° 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 0.3 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
57°
Stations used
38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 185 in the 60 days after this one and 87 in the 30 days before it.

After

The first 60 of 185.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc21219778. Read Mon, Oct 5, 2026, 12:08 PM UTC.