Baja, California earthquake: 6.4 magnitude earthquake reported off the southwest coast of California

A 6.4-magnitude quake shook the coast of Baja, Calif. Friday.

No tsunami warning has been issued.

The earthquake was centered off of the coast of  Baja, Calif. and struck at about 2: 36 a.m. The location of the earthquake is 172 miles from Coronado, Calif.

It is unclear whether the quake caused damage. Several aftershocks have been reported, the latest hit at about a.m. and measured at 4.7.

U.S.G.S. website here: http://earthquake.usgs.gov/earthquakes/map/