.FOR CALIFORNIANS it felt like remembrance. In 2013 a parade of hurricanes, fuelled by atmospheric streams, killed at least 21 people as well as created nearly $5bn-worth of harm around the condition. On February fourth this year the same sort of tornado once more ravaged. Hurricane-strength winds buffeted the core coast near Major Sur. In Los Angeles stars were saturated as they reached the Grammy honors' red carpet. Mansions in the Hollywood Hillsides were actually covered in dirt. At the very least 3 people have actually perished. What are actually atmospherical rivers, and are they a threat past California?