A stronger atmospheric river is set to hit Northern California on Monday and then hit L.A. County on Tuesday, aiding hopes of helping end a devastating fire season.

The second peak of an ongoing atmospheric river storm arrived in Northern California Monday afternoon, prompting flood watches and a winter storm warning up in the Sierra.

The West Coast is in the middle of a long-lasting and potent atmospheric river event, which will bring days of heavy rain and mountain snow throughout the week ahead.

It could rain for many hours each day in the middle of next week as a storm takes a swing through Southern California, forecasters say.

It's not only a California soaking, but also lowland snowfall for the Pacific Northwest. Here's our latest forecast.