.FOR CALIFORNIANS it seemed like familiarity. Last year a procession of hurricanes, sustained through atmospherical rivers, eliminated at the very least 21 people and led to almost $5bn-worth of harm around the condition. On February 4th this year the exact same sort of hurricane once again wreaked havoc. Hurricane-strength winds buffeted the central coastline near Significant Sur. In Los Angeles celebrities were saturated as they got to the Grammy honors' welcome mat. Manors in the Hollywood Hills were actually covered in dirt. At the very least three folks have died. What are actually climatic waterways, and are they a threat beyond The golden state?