SAN DIEGO -
A magnitude 6.3 earthquake struck this morning in the Pacific Ocean off the California coast, the U.S. Geological Survey reported.
No tsunami warning was issued. No damages were reported.
The temblor struck at 2:36 a.m. at a depth of seven miles 163 miles south-southwest of Avalon in an area of shallow faulting where "the Pacific (tectonic) plate moves to the northwest with respect to the North America plate..." according to a USGS statement.
It has been more than 40 years since an earthquake has struck in that part of the ocean, according to the USGS. The quake was felt over a wide area in San Diego from Point Loma, Escondido, Rancho Bernardo, San Ysidro, El Cajon and other areas, as well as Ensenada and Mexicali, Mexico, according to the USGS.
Aftershocks were detected in California, the latest at about 4 a.m. in Avalon, Calif. measuring a 4.7.
U.S.G.S. website here: http://earthquake.usgs.gov/earthquakes/map/
NOTE: The earthquake was initially reported as a 6.4, but was later downgraded by the USGS.