Debris flows brought on by the strongest atmospheric river of the season swept a car off a southern California highway and into the ocean and left roads submerged in sludge.While the heavy rains from the storm hitting the region began to ease Thursday night,

One of the strongest storms of the season slammed fire-ravaged Los Angeles with heavy rain, sending streams of mud and debris across roadways and sweeping a fire department vehicle off a Malibu road into the ocean,

Fires can cause soil to repel water, increasing risk of floods and mudslides. Californians experienced this as some areas were hit with storms.