6.4 earthquake strikes Southern California

A 6.4 magnitude earthquake struck Southern California Thursday morning.

The epicenter of the quake was about 150 miles northeast of Los Angeles, according to CNN. KTLA-TV said the area is sparsely inhabited.

Reports indicate that the quake shook buildings in downtown L.A.

Shortly after the initial quake, several aftershocks were reported in the same area of the epicenter, including a few that measured 4.7, 4.2, 3.8 and 3.5 hit the same area, the U.S. Geological Survey reported, KTLA said. CNN reported that some 25 aftershocks have been recorded.

Experts are telling residents to expect more aftershocks Thursday and into Friday.

KSNV-TV in Las Vegas reported that the quake was felt in Vegas and shared a video of the quake apparently shaking a room in The Venetian Casino and Hotel:

Thus far, no injuries have been reported, the New York Times said.

Paul Caruso, a geophysicist with the USGS, told reporters that though the quake was felt across a large area, the agency does not expect there to be any "significant damage." He did note, though, that had the quake been closer to L.A., it would be a different story.

"An earthquake that strong that occurred near a city would cause major destruction and probably a lot of casualties," he said.

This is the strongest quake to hit the area since 1999, KTLA reported.

This is a developing story and will be updated.