Small earthquake shakes Long Beach, Calif.

A small earthquake has shaken Long Beach and nearby areas of Southern California.

The U.S. Geological Survey says a tremor with a preliminary magnitude of 3.8 occurred at 9:06 a.m. Friday at a depth of about 13 miles beneath the port city on the south Los Angeles County coast.

Port of Long Beach spokesman John Pope says there are no indications of any damage to the harbor.

Pope says the quake was a single jolt.

The quake comes one day after a modest earthquake hit a sparsely populated area east of San Diego.

That magnitude-4.6 temblor struck at 12:39 p.m. Thursday about 9 miles north of Ocotillo, near the seismically active California-Mexico border.

There were no reports of damage from yesterday's temblor.