.FOR CALIFORNIANS it believed that du00e9ju00e0 vu. Last year a procession of tornados, fed through atmospheric waterways, gotten rid of at least 21 individuals as well as triggered nearly $5bn-worth of harm throughout the state. On February fourth this year the exact same form of storm once more wreaked havoc. Hurricane-strength winds buffeted the main coast near Major Sur. In Los Angeles famous people were actually saturated as they reached the Grammy honors' red carpet. Manors in the Hollywood Hillsides were actually covered in mud. At least three people have perished. What are climatic waterways, and are they a hazard beyond The golden state?