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

More rain has fallen on parts of Southern California after causing mudflows over the weekend – helping firefighters, but boosting the risk of toxic ash run-off in areas scorched by Los Angeles-area wildfires.

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

Southern California’s first full rainy day of the winter has arrived. The day, months in the making, has brought steady storms across the region while the Southland experiences drought conditions. The mostly welcome rain began Saturday night and is expected to sustain until Monday evening.