SAN CLEMENTE -- A magnitude 5.0 earthquake hit Imperial County at 11:33 a.m. Saturday and was felt by some in southern Orange County.
People in Aliso Viejo, Irvine, Mission Viejo and San Clemente reported feeling the quake to USGS web site.
The epicenter was estimated by seismographs and computers to be 1 mile deep.
The epicentered is 16 miles west-southwest of El Centro, near the small Imperial Valley farm town of Seeley.
The 5.0 was followed at 11:46 by a 4.7 magnitude quake centered a few miles south, just across the Mexican border.
It has not been determined if Saturday's earthquakes are related to the Easter Sunday magnitude 7.2 quake, which killed two people in Mexicali and
caused about $91 million on the U.S. side of the border.