Debris flows carry mud and water, and their power, speed and thick consistency allow them to also transport heavy objects like a boulder the size of a Volkswagen Beetle.

Home AP News Southern California hit by destructive debris flows caused by heavy rains. ... And in northern Utah, rain and snow created dangerous conditions on mountain roads leading to ski resorts.

After heavy rains, debris flows hit Southern California community scarred by fire. ... And in northern Utah, rain and snow created dangerous conditions on mountain roads leading to ski resorts.

After heavy rains, debris flows hit Southern California community scarred by fire. ... In northern Utah, rain and snow created dangerous conditions on mountain roads leading to ski resorts.