What is actually a climatic stream?

.FOR CALIFORNIANS it believed that remembrance. In 2013 a parade of hurricanes, sustained by atmospheric streams, gotten rid of at least 21 individuals and induced nearly $5bn-worth of harm across the state. On February 4th this year the very same form of hurricane once more created chaos.

Hurricane-strength winds buffeted the central coastline near Major Sur. In Los Angeles celebrities were actually soaked as they came to the Grammy honors’ welcome mat. Estates in the Hollywood Hills were actually covered in dirt.

At the very least three individuals have actually passed away. What are actually atmospherical streams, and are they a hazard beyond California?