L.A. County's first significant storm in more than eight months has already forced the closure of I-5, unleashed mud on roadways, and closed Malibu's public schools.

The northbound lanes of Interstate 5 were closed for more than three hours as severe winter weather conditions along ...

Ash and mud flowed across streets in charred neighborhoods, and flood watches were in effect for the Palisades, Altadena and Castaic Lake areas.