Less than an inch of rain fell in most areas, but it was enough to loosen Los Angeles hillsides burned bare by the recent blaze near the Pacific Palisades.

Rain falling on Southern California is expected to aid firefighters mopping up multiple wildfires. But potentially heavy downpours on charred hillsides could bring new troubles such as toxic ash runoff.

"That could be enough to create debris flows." The rain started along the Central Coast before moving into Ventura and LA counties in the evening. It was forecast to increase throughout the weekend and possibly last into early Tuesday,