It’s going to be a wet Christmas in California, where a series of storms is about to dump as much as 10 inches (25 centimeters) of rain this week.
An atmospheric river is already drenching San Francisco and the Bay Area, and flood watches extend across almost the entire state, according to the National Weather Service. As that system moves through, another one will move in, bringing rain to Southern California on Tuesday and snow in higher elevations the same day.