.FOR CALIFORNIANS it felt like familiarity. In 2015 a procession of storms, sustained by atmospherical streams, eliminated a minimum of 21 folks as well as led to nearly $5bn-worth of harm throughout the condition. On February fourth this year the same kind of tornado again ravaged. Hurricane-strength winds buffeted the central coast near Significant Sur. In Los Angeles celebrities were actually saturated as they arrived at the Grammy honors' ceremony. Mansions in the Hollywood Hills were actually covered in dirt. At the very least three individuals have died. What are actually atmospherical rivers, and are they a risk past The golden state?