An atmospheric river is expected to bring torrential rain to California this week, threatening parts of the state with flash floods and mudslides.

A stronger atmospheric river is set to hit Northern California on Monday and then hit Los Angeles County on Tuesday, aiding hopes of a more definitive end to a devastating fire weather season for Southern California.

After months of extremely dry conditions in Southern California, an atmospheric river storm delivered much-needed rain to a region plagued by wildfires in January.

Southern California is in desperate need of rain, but it could come far too fast this week, especially in areas recently burned by wildfires.

Areas charred by last month's wildfires in Southern California now face a new threat from a powerful, but fast-moving Pacific storm. Here's what you need to know about this threat.