Storms dumped heavy snow and freezing rain on a swath of the eastern U.S. stretching from Kentucky to the nation's capital, causing hundreds of traffic accidents, knocking out power in places and threatening to flood waterways as temperatures

The strongest atmospheric river of the season left roads submerged in sludge and created conditions for mudslides on wildfire-scarred hillsides.

In the Los Angeles area, the burn scars that carry the highest risk are those from the Eaton and Palisades fires from January and the Bridge fire from the fall.