.FOR CALIFORNIANS it thought that remembrance. In 2015 a march of storms, sustained by atmospherical streams, killed at least 21 folks and also triggered almost $5bn-worth of harm all over the state. On February fourth this year the same type of tornado once more ravaged. Hurricane-strength winds buffeted the central coastline near Large Sur. In Los Angeles famous personalities were actually soaked as they got to the Grammy awards' red carpet. Estates in the Hollywood Hillsides were actually covered in dirt. At least 3 people have actually died. What are actually atmospherical rivers, as well as are they a danger past California?