.FOR CALIFORNIANS it felt like du00e9ju00e0 vu. In 2014 a parade of tornados, fuelled by climatic rivers, gotten rid of a minimum of 21 folks and also led to virtually $5bn-worth of damage throughout the condition. On February fourth this year the very same type of storm again wreaked havoc. Hurricane-strength winds buffeted the central shore near Major Sur. In Los Angeles famous people were saturated as they came to the Grammy honors' red carpet. Mansion houses in the Hollywood Hills were covered in dirt. A minimum of three individuals have perished. What are actually climatic rivers, and also are they a danger beyond California?