Rain fell on parts of Southern California on Sunday and the scattered showers were expected to continue overnight, boosting the risk of toxic ash runoff in areas scorched by Los Angeles-area wildfires.

But potentially heavy downpours on charred hillsides could bring new troubles — such as flooding and toxic ash runoff. The rain was expected to snap a near-record streak of dry weather for Southern California.

Rain on the way to parched Southern California on Saturday will aid firefighters mopping up multiple wildfires.