Last week’s storm brought at least two inches of rain to most spots in the county and even upward of four inches in others. A system due to hit on 12/11 and 12/12 could soak us with another one to four inches. In an advisory issued Monday, the National Weather Service forecast major rain for Southern California but predicted especially high totals for Santa Barbara County. The pending storm, the agency reported, “has the potential for greater dynamics and instability,” including rainfall rates of one half-inch per hour that could cause flash-flooding, thunder, and wind speeds up to 60 miles per hour.