After a chilly and dry start to the week, Northern California's weather pattern is about to change. The next winter storm is set to bring major impacts to commuters and holiday travelers by the end of the week with heavy rain,

Forecasters are concerned the storm could bring mudslides in and near areas scorched by the Palisades and Eaton 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.