.FOR CALIFORNIANS it felt like recognition. In 2015 a procession of tornados, sustained by climatic streams, killed at least 21 people and resulted in nearly $5bn-worth of damages across the state. On February 4th this year the exact same type of hurricane once again ravaged. Hurricane-strength winds buffeted the central shore near Significant Sur. In Los Angeles famous personalities were saturated as they got to the Grammy awards' red carpet. Mansion houses in the Hollywood Hillsides were covered in dirt. A minimum of 3 individuals have perished. What are atmospherical rivers, as well as are they a threat beyond The golden state?