4.0 Earthquake Rocks Orange County

A magnitude 4.0 earthquake was felt distinctly through most of Orange County Monday afternoon, but there were no reports of damage or injuries, according to Caltech seismologists.

The 4:20 p.m. jolt was centered eight miles southeast of Yorba Linda, just south of the Riverside Freeway on the Orange County side of the Riverside-Orange county line. It occurred at a depth of 6 miles.

Shake maps issued by Caltech and the U.S. Geological Survey showed the strongest shaking extended from the epicenter south to Irvine and Tustin. But the quake could be lightly felt as far north as Los Angeles and as far south as Temecula and Oceanside.