200 Cars Trapped in a California Mudslide Are a Preview for This Winter's El Niño

Hundreds of cars were stranded when a mudslide swamped a Southern California freeway last night in what felt like a chilling dress rehearsal for the El Niño on the way. The mudslide is a reminder that it's not just heavy rain we need to worry about--heavy rain falling on the state's parched ground will bring disaster.