.FOR CALIFORNIANS it felt like familiarity. Last year a parade of storms, sustained by atmospheric streams, eliminated at the very least 21 people and also triggered virtually $5bn-worth of harm all over the state. On February fourth this year the exact same sort of hurricane again ravaged. Hurricane-strength winds buffeted the central shore near Major Sur. In Los Angeles famous personalities were actually soaked as they arrived at the Grammy awards' welcome mat. Residences in the Hollywood Hillsides were actually covered in dirt. A minimum of three individuals have actually passed away. What are atmospheric rivers, as well as are they a threat beyond The golden state?