.FOR CALIFORNIANS it felt like familiarity. In 2014 a march of hurricanes, fed through atmospheric waterways, killed at least 21 folks as well as created nearly $5bn-worth of harm throughout the state. On February fourth this year the exact same type of storm again wreaked havoc. Hurricane-strength winds buffeted the main coastline near Large Sur. In Los Angeles famous people were actually soaked as they arrived at the Grammy honors' welcome mat. Estates in the Hollywood Hillsides were actually covered in mud. A minimum of three individuals have actually died. What are actually atmospherical streams, and also are they a hazard past The golden state?