.FOR CALIFORNIANS it seemed like familiarity. In 2015 a procession of tornados, sustained through atmospherical rivers, gotten rid of at least 21 folks and also caused virtually $5bn-worth of damages across the state. On February 4th this year the exact same type of hurricane once again wreaked havoc. Hurricane-strength winds buffeted the core coastline near Big Sur. In Los Angeles stars were actually saturated as they reached the Grammy honors' welcome mat. Mansion houses in the Hollywood Hills were dealt with in mud. A minimum of three folks have actually perished. What are actually atmospheric rivers, and also are they a danger past The golden state?