What is actually a climatic waterway?

.FOR CALIFORNIANS it seemed like du00e9ju00e0 vu. In 2015 a procession of tornados, sustained through atmospherical waterways, eliminated at least 21 individuals and also triggered almost $5bn-worth of harm around the condition. On February 4th this year the very same form of storm once again created chaos.

Hurricane-strength winds buffeted the core shore near Significant Sur. In Los Angeles celebs were soaked as they came to the Grammy honors’ red carpet. Mansion houses in the Hollywood Hillsides were actually covered in mud.

At the very least 3 individuals have actually died. What are actually climatic waterways, and are they a threat beyond California?