Parts of Pacific Coast Highway remained closed due to heavy flooding and mudslides in Southern California, according to state officials.

As of midafternoon, rain had picked up in some areas, and Caltrans crews were working at many locations to clear debris from roads and reduce flooding.

Today on AirTalk, as the heaviest storm of the season rains down on Los Angeles, we're looking at the potential threat of mudslides in the wildfire burn areas and we'll tell you how to stay prepared.