Heavy rain is predicted for portions of southern California, where crews were still clearing debris from weekend flooding and a mudslide that damaged more than 50 homes and blocked a highway. The National Weather Service posted flash flood watches for the mountains of Los Angeles, Santa Barbara and Ventura counties. Scattered showers and thunderstorms capable of producing heavy downpours are likely during the first of the week. Several wildfires over the past few weeks have burned vegetation, leaving the soil with very little to hold it in place. Cool, moist air flowed inland from the Pacific early Monday in the area of Big Sur which has sustained severe damage from fires. Conditions are expected to remain moist through the first part of the week.