THIS MID LEVEL JET WILL DO WILD THINGS..
Getting a 900mb jet aimed NE to SW like this will bring a massive influx of moisture into a very cold airmass. How you achieve 10"..15"...20" snows is via a transport of moisture. Tilted this way keeps more cold maritime air in vs SE to NW pic.twitter.com/FtbFMGfOlS

— Mike Masco (@MikeMasco) January 30, 2021