.FOR CALIFORNIANS it thought that du00e9ju00e0 vu. Last year a ceremony of tornados, fed by atmospherical waterways, killed at least 21 individuals and led to virtually $5bn-worth of harm across the state. On February 4th this year the same form of storm once again created chaos. Hurricane-strength winds buffeted the core coast near Big Sur. In Los Angeles celebs were actually saturated as they reached the Grammy honors' welcome mat. Mansion houses in the Hollywood Hills were covered in mud. At least 3 folks have perished. What are actually climatic rivers, as well as are they a danger beyond California?