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.

A storm starting overnight Tuesday in California is expected to bring a high risk of debris flows later this week to the burn areas from the Los Angeles County fires. Between 2 and 3 inches of rain is expected to fall in the Palisades Fire area and between 3.

A new rain storm is bearing down on California, including fire-ravaged Los Angeles, where residents are bracing for the possibility of mudslides and landslides.