The U.S. Geological Survey says a large earthquake has struck in the Pacific Ocean off the coast of Southern California and Mexico.
The quake, with a preliminary magnitude of 6.4, was recorded at 2:36 a.m. Friday, 163 miles south southwest of the California city of Avalon and 167 miles west southwest of Rosarito, Mexico.
It was at the relatively shallow depth of 6.3 miles.
No tsunami warning has been issued.
The USGS said several people in Southern California communities reported feeling slight shaking. But officials in Los Angeles and San Diego counties say the quake wasn't widely felt and nobody reported any damage or injuries.