.FOR CALIFORNIANS it seemed like remembrance. In 2015 a procession of storms, fed by climatic waterways, gotten rid of at least 21 folks and also caused nearly $5bn-worth of damages around the state. On February fourth this year the same form of tornado once more created chaos. Hurricane-strength winds buffeted the core shore near Significant Sur. In Los Angeles famous personalities were soaked as they got to the Grammy awards' red carpet. Residences in the Hollywood Hills were covered in dirt. A minimum of three folks have died. What are climatic rivers, and also are they a danger beyond The golden state?