California earthquakes

M1.7 earthquake 6km ENE of Oxnard, CA

A magnitude 1.7 earthquake struck 6km ENE of Oxnard, CA on Sun, May 11, 2003, 5:21 AM PDT (12:21 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M2.9 4km SSE of Frazier Park, 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
1.7 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2003-05-11 12:21:44 UTC
Depth
26.3 km (16.3 mi), shallow
Epicenter
34.203° N, 119.120° 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 2.3 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.31
Depth from
From location
Station coverage gap
176°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 53 in the 60 days after this one and 28 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci13962880. Read Mon, Oct 5, 2026, 9:47 AM UTC.