updated 2:08 a.m. ET April 30, 2008
WILLOW CREEK, Calif. - A moderate earthquake hit a mountainous region of Northern California on Tuesday night. There are no immediate reports of injury or damage.
The magnitude-5.2 temblor struck at 8:03 p.m., centered about 11 miles southeast of the town of Willow Creek in the Shasta-Trinity National Forest, according to the U.S. Geological Survey. Willow Creek is about 320 miles north of San Francisco.
The quake originated about 11 miles below the surface on an unmapped fault, said David Oppenheimer, a USGS seismologist based in Menlo Park.
