California earthquakes

M1.6 earthquake 6km ESE of Temecula, CA

A magnitude 1.6 earthquake struck 6km ESE of Temecula, CA on Sun, Dec 23, 2007, 1:35 PM PST (21:35 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.0 2km ESE of Loma Linda, 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
2007-12-23 21:35:28 UTC
Depth
4.8 km (3.0 mi), shallow
Epicenter
33.475° N, 117.087° 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, 18.7 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
124°
Stations used
27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 106 in the 60 days after this one and 75 in the 30 days before it.

After

The first 60 of 106.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci10296477. Read Mon, Oct 5, 2026, 12:09 PM UTC.