A powerful storm with an atmospheric river threatens to bring life-threatening flooding and debris flow from Los Angeles wildfires burn scars. The atmospheric river is forecast to unleash heavy downpours and wind on areas charred by last month’s fires,

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.

Most of the California coast is under a flood alert as torrential rain and mountain snow intensified over California Thursday morning, part of yet another atmospheric river storm, bringing a significant risk of flooding and landslides in areas recently affected by devastating wildfires.