What is an atmospherical waterway?

.FOR CALIFORNIANS it believed that recognition. In 2015 a procession of hurricanes, sustained through climatic waterways, eliminated a minimum of 21 folks as well as induced almost $5bn-worth of harm across the condition. On February 4th this year the same sort of hurricane once again created chaos.

Hurricane-strength winds buffeted the central shore near Large Sur. In Los Angeles famous people were actually soaked as they came to the Grammy honors’ welcome mat. Estates in the Hollywood Hillsides were covered in mud.

A minimum of 3 individuals have perished. What are actually atmospheric waterways, and also are they a threat beyond California?