.FOR CALIFORNIANS it felt like recognition. Last year a procession of storms, sustained through climatic rivers, killed at the very least 21 folks and also triggered virtually $5bn-worth of damages throughout the condition. On February 4th this year the same type of tornado again ravaged. Hurricane-strength winds buffeted the core shoreline near Major Sur. In Los Angeles personalities were saturated as they arrived at the Grammy awards' ceremony. Mansion houses in the Hollywood Hills were actually covered in dirt. A minimum of 3 folks have actually passed away. What are actually atmospherical rivers, and are they a threat past The golden state?