Date: 8/7/2012 11:23 PM PST
There was no immediate word of injuries or damage, but the quake was felt over a wide area.
According to the the U.S. Geological Survey, the temblor struck two miles northeast of Yorba Linda, about 29 miles east of downtown Los Angeles.
It was felt from Long Beach northwest to Santa Monica, as well as in downtown L.A.
-- Shelby Grad
Map: U.S. Geological Survey
Editor's Note: Using the Google Maps distance measuring too, this earthquake is 39 miles Northwest of the San Onofre Nuclear Station as shown in the nuclear map below.
View Live Ustream Radiation Detectors in a larger map