The first reports of mud and debris flows are trickling in with Caltrans announcing several road closures for mudslide prone areas. As of 4:30 p.m., mudflows in Topanga Canyon prompted the closure of Pacific Coast Highway west of Topanga Canyon Boulevard,

The rain is raising concerns about potential mudslides in recent burn scar areas, including Malibu, Altadena, and other regions.

Some areas could get more than a half-inch of rain an hour later Sunday, the National Weather Service said. Showers co