.FOR CALIFORNIANS it thought that du00e9ju00e0 vu. In 2015 a parade of tornados, fed through climatic rivers, killed at least 21 folks and induced nearly $5bn-worth of damage throughout the condition. On February fourth this year the very same form of tornado again wreaked havoc. Hurricane-strength winds buffeted the main coastline near Large Sur. In Los Angeles famous people were actually soaked as they came to the Grammy honors' red carpet. Mansion houses in the Hollywood Hills were dealt with in dirt. A minimum of three people have actually passed away. What are atmospherical waterways, and also are they a danger past The golden state?