Two distinct systems will bring widespread light to moderate rain to Southern California: one on Tuesday into Wednesday and another Thursday and Friday.

Rain is easing 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.

A slow-moving low-pressure system will linger over the Southwest, bringing steady rain through at least Monday.

The NWS says excessive rainfall is expected to cause flooding along the Russian River, affecting roadways and agricultural land.

Parts of northern California could see up to a foot of rain, but Phoenix will remain dry and warmer than usual.