What is actually an atmospheric river?

.FOR CALIFORNIANS it felt like familiarity. In 2015 a parade of storms, sustained by atmospherical streams, gotten rid of a minimum of 21 folks and also created almost $5bn-worth of harm around the state. On February 4th this year the very same type of tornado once again wreaked havoc.

Hurricane-strength winds buffeted the main shoreline near Big Sur. In Los Angeles famous personalities were actually saturated as they came to the Grammy awards’ ceremony. Residences in the Hollywood Hillsides were dealt with in mud.

A minimum of three people have passed away. What are atmospheric streams, and also are they a hazard past The golden state?