Strong zonal jet stream and deep + cold trough to combine boatloads of Pacific moisture with Arctic air = potential for major storm development e.g. bomb cyclone along the Pac NW coast.

Get ready for at least 2 weeks of wild weather on the West Coast. 🍿

Mountain snow 🏂🏼❄ pic.twitter.com/NGf9020YVv

— Ryan Maue (@RyanMaue) October 18, 2021