LOS ANGELES (AP) — Rain eased on Monday after Southern California’s first significant storm of the season brought weekend downpours that aided firefighters but caused ash, mud and debris to flow across streets in wildfire-burned areas, while heavy mountain snow forced the shutdown of a major interstate north of Los Angeles.

Snow shut down a key interstate north of Los Angeles for hours on Monday while weekend downpours doused wildfires across Southern California in the first significant storm of

Much-needed rain arrived in Southern California on Sunday, and while it’s been helping with the ongoing wildfire efforts it’s also leading to some flash flooding as well as mud and debris flows in recent burn scar areas around Los Angeles.