California earthquakes

M1.6 earthquake 18km NNW of Grapevine, California

A magnitude 1.6 earthquake struck 18km NNW of Grapevine, California on Sat, Jan 11, 2003, 8:55 AM PST (16:55 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M4.5 20km NE of Arvin, CA. 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
1.6 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2003-01-11 16:55:39 UTC
Depth
12.9 km (8.0 mi), shallow
Epicenter
35.079° N, 119.032° 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 1.3 km horizontally, 2.8 km in depth
Magnitude uncertainty
±0.47
Depth from
From location
Station coverage gap
168°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 198 in the 60 days after this one and 199 in the 30 days before it.

After

The first 60 of 198.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci9879133. Read Mon, Oct 5, 2026, 12:58 PM UTC.