What is actually a climatic waterway?

.FOR CALIFORNIANS it thought that familiarity. In 2015 a procession of storms, fuelled by atmospherical rivers, eliminated at least 21 folks as well as caused almost $5bn-worth of harm all over the state. On February 4th this year the exact same sort of tornado again wreaked havoc.

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

At the very least 3 individuals have died. What are climatic rivers, and also are they a threat past California?