An atmospheric river is slamming portions of California, with multiple inches of rain expected to drench the area until the storm runs out of moisture Wednesday morning, forecasters say. According to the National Weather Service's Tuesday morning forecast,

The second in a series of atmospheric river storms is set to arrive in Northern California on Monday, prompting flood watches for much of the region and a winter storm warning up in the Sierra.

An atmospheric river is pounding Northern California with heavy rain and the threat of flooding before heading to Southern California.