(Photo: Reuters/Jonathan Alcorn)A man throw a football on Venice Beach in Venice, Calif. in this photo taken June 21, 2010.

A California quake has shaken the west coast of the United States on Friday. The earthquake was measured at a magnitude of 6.4 at 2.36 a.m. PT on Friday.

According to the U.S. Geological Survey the earthquake struck in the Pacific Ocean off the coast of Mexico. There were not immediate reports of any injuries to people or significant damage to buildings.

The quake's epicenter was measured 163 miles (262 kilometers) south southwest of Avalon in California, and 167 miles west southwest of Rosarito in Mexico.

The U.S. Geological Survey has also said that the quake hit at a relatively shallow depth at just 6.3 miles (10.1 kilomters) down.

Despite the significant tremor and immediate fears, no tsunami warning was issued.

Also even though the quake was measured at 6.4 on the Richter Scale, in Southern California residents only reportedly felt mild shaking.

Authorities in San Diego and Los Angeles have said that the quake was not widely felt across the cities, and that there had been no initial reports of damage or injuries to residents.