.FOR CALIFORNIANS it seemed like du00e9ju00e0 vu. Last year a parade of hurricanes, sustained by atmospheric streams, eliminated a minimum of 21 people as well as induced virtually $5bn-worth of damages around the state. On February fourth this year the exact same kind of tornado again created chaos. Hurricane-strength winds buffeted the central shoreline near Big Sur. In Los Angeles famous personalities were soaked as they got to the Grammy awards' ceremony. Mansion houses in the Hollywood Hillsides were covered in mud. At the very least 3 people have died. What are atmospherical waterways, as well as are they a risk beyond The golden state?