LOS ANGELES, April 5 (Xinhua) -- A magnitude 5.3 earthquake hit off the Southern California coast on Thursday, according to the U.S. Geological Survey.

The U.S. Geological Survey initially reported the shaker was a magnitude-5.0, but it was later upgraded to magnitude-5.3.

The epicenter, with a depth of 16.8 km, was monitored just before 12:30 p.m. local time. The quake centered about 57 kilometers southwest of Channel Islands Beach, California, according to the USGS.

"The offshore faults that produced today's M5.3 quake are part of the system that moves Southern California around a bend of the San Andreas fault," seismologist Lucy Jones tweeted.

The temblor was felt as far away as Los Angeles, according to local media reports. Shaking was also reported by residents in areas such as Tarzana, San Dimas, Long Beach, Pomona and Torrance, according to City News Service.

The Tsunami Warning Center stated that there is no threat of a tsunami from the off-shore quake.

There were no immediate reports of damage or injuries. Fire officials in Ventura County, close to the epicenter of the quake, also reported no damage from the earthquake.

The Los Angeles Fire Department said it went into "earthquake mode," during which it pulls its trucks out of stations and crews begin sweeping neighborhoods to check for damage to "all major areas of concern": such as transportation infrastructures, Dodger Stadium, universities and other large places of assemblage, apartment buildings, dams and power-lines.

Los Angeles police were also making checks of "infrastructure and critical locations." Enditem