.FOR CALIFORNIANS it felt like familiarity. In 2013 a procession of tornados, sustained through atmospherical streams, eliminated at least 21 individuals and also led to almost $5bn-worth of damages throughout the state. On February 4th this year the exact same type of hurricane again created chaos. Hurricane-strength winds buffeted the core shore near Big Sur. In Los Angeles famous personalities were actually soaked as they came to the Grammy honors' ceremony. Residences in the Hollywood Hills were actually dealt with in mud. A minimum of 3 folks have perished. What are actually atmospherical rivers, and also are they a danger beyond California?