Flooding on a section of the 5 Freeway in Sun Valley left the roadway resembling a river Friday.
At least five cars remained stranded in the deep water early Saturday.
The flooding happened on a stretch of the freeway near Penrose and Sheldon streets. Drivers using the interior lanes to get by caused water to spill over the median wall.
No injuries were reported.
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It wasn't immediately clear when the freeway will reopen in the north San Fernando Valley.
It was just one instance of drivers being stranded due to flooding Friday. In Burbank, several cars were stranded near Burbank Airport.
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A flash flood warning was issued for LA County through 10 p.m. Friday. Southern California had rain totals ranging from 1 to 5 inches by the afternoon, with the heavier rain expected by 11 p.m. Friday.