Snow levels were expected to drop significantly overnight as a winter-like weather system continued to push through Southern California on Friday.
The National Weather Service called for snow levels to drop from 4,500 feet during the day Friday to 3,500 feet by Saturday morning.
Snow flurries may even fall as low as 3,000 feet, according to the NWS.
Between 6 and 12 inches of snow was forecast to fall in the San Gabriel Mountains, with about 3 to 6 inches expected in the Antelope Valley foothills.
Northeast winds between 25 to 35 mph, with gusts as high as 65 mph, were also expected in the mountain areas, according to the NWS.
Travelers driving on the high roads of the Angeles National Forest and along highways 2 and 138, were warned to be extremely cautious due to snow and fog.
Warmer weather was expected to return to the region on Sunday.