Several areas in Southern California could have scattered showers throughout the day, but the potential for "damaging flooding" will not increase until the evening to overnight hours.

The same storm system driving severe weather elsewhere in the country this week is fueling one of the most widespread and potent rounds of rain in Southern California since the historic January fires.

The storm is expected to dump 1 to 2 inches of rain along the coast and up to 4 inches in the valleys at rates that could cause problems. Some roads will be closed starting Wednesday.