What is an atmospheric stream?

.FOR CALIFORNIANS it seemed like familiarity. Last year a procession of tornados, sustained by atmospherical rivers, killed at the very least 21 folks as well as created nearly $5bn-worth of harm around the state. On February 4th this year the very same type of tornado once again ravaged.

Hurricane-strength winds buffeted the main coast near Big Sur. In Los Angeles celebs were soaked as they got to the Grammy honors’ ceremony. Residences in the Hollywood Hills were actually dealt with in dirt.

At least 3 individuals have actually perished. What are climatic streams, and are they a risk past The golden state?