What is actually an atmospherical waterway?

.FOR CALIFORNIANS it thought that du00e9ju00e0 vu. In 2014 a ceremony of hurricanes, fuelled by climatic waterways, eliminated a minimum of 21 individuals as well as caused nearly $5bn-worth of harm around the state. On February fourth this year the exact same kind of hurricane again created chaos.

Hurricane-strength winds buffeted the main shore near Large Sur. In Los Angeles stars were actually soaked as they reached the Grammy awards’ red carpet. Mansion houses in the Hollywood Hills were dealt with in mud.

At the very least 3 individuals have passed away. What are atmospherical waterways, as well as are they a danger past The golden state?