.FOR CALIFORNIANS it thought that remembrance. In 2014 a procession of hurricanes, sustained by climatic rivers, killed a minimum of 21 people and also resulted in virtually $5bn-worth of damage around the state. On February fourth this year the very same type of storm again created chaos. Hurricane-strength winds buffeted the central shoreline near Large Sur. In Los Angeles famous personalities were saturated as they got to the Grammy awards' welcome mat. Mansion houses in the Hollywood Hills were dealt with in dirt. A minimum of three folks have perished. What are actually atmospherical streams, as well as are they a threat past California?