A section of Southern California found itself waist-deep in mud as the weekend arrived, and a highway overtaken by flowing debris looked like a buried junkyard of hundreds of cars that would likely take days to dig up.

The worst of the thunderstorms had passed, but the continued chance of rain could dampen cleanup and relief efforts in northern Los Angeles County's Antelope Valley, where the most serious slides occurred.

On Friday, rescuers and those stranded in the highway debris flow described a chaotic scene that somehow left no reported injuries or deaths.