Much-need rain has begun to fall over Southern California, bringing relief to the drought-stricken region but also the threat of toxic runoff.

Rain was falling across Southern California on Sunday, bringing some relief to thousands of firefighters who have been battling multiple major wildfires in the LA area.

Rain brought much needed aid to the Los Angeles firefight, moving the fires surrounding the city closer to containment.

Much-needed rain has arrived in Southern California and is helping with the ongoing wildfire fight across the Los Angeles area. However, the return of the rain has triggered Flash Flood Warnings, mudslides and debris flows in burn-scar areas,