Periods of heavy rain were forecast for Southern California through at least Tuesday morning, as the area continues to be under flash flood watches and warnings after several days of unrelenting storms.

A low pressure system off the Oregon and Northern California coasts is expected to move into Los Angeles later Monday, but by Tuesday afternoon much of the wet weather should be pushing east, bringing an end to an onslaught of rain that has brought season total rainfall amounts to more than 20 inches in downtown L.A. Normal rainfall amounts for an entire season run 14 inches.

Dale Chessey, a spokesman for the California Office of Emergency Services, said that while tonight’s storm is not likely to be as strong as the one that pummeled Southern California over the weekend, the area’s saturated soils, especially in burn areas that are already prone to mudslides, could cause additional problems.

The series of storms has been the result of a low-pressure system off the coast fed by a stream of moisture from the southern Pacific known as the “Pineapple Express.” As of early Monday morning, some school closings and road closures had been reported.

The overall economic impact is expected to be very modest, although certain businesses tied to the weather are seeing some effects.

Much of the area’s roadwork and construction activity, for example, has been delayed as a result of the wet weather. The area’s ski resorts will eventually reap the benefits of the heavy snowfall, but many of the mountain roads were closed over the weekend, resulting in lost business.

The Associated Press reported at least nine storm-related deaths since Saturday morning. This included a 2-year-old girl who fell into a wash and was killed after slipping from her mother’s grasp when they were being lifted by rescuers. The woman, who was not immediately identified, had driven around barricades to access a flooded road intersecting the wash, police said. In Malibu, a man was killed when his vehicle plunged into the surf off Pacific Coast Highway. Near Dodger Stadium, a homeless person sleeping in a tent was killed by a mudslide, police said.