ORANGE COUNTY, CA -- A 4.5-magnitude earthquake shook Southern California shortly after 9:30 a.m. Wednesday. It was followed by a 3.4 jolt about 20 minutes later.
The 4.5 quake was epicentered about 3 miles northeast of Yorba Linda and was felt as far north as Los Angeles. The 3.4 temblor hit in the same vicinity.
The quakes belong to a series of in the area since .