When the Hudson Bay gets anomalously toasty, it spells undercutting risks for the southern US. That being said, the Pacific jet is working against big arctic cold weather in mid December. The focus looks to shift to January now for the return of the Polar Vortex. Time will tell. pic.twitter.com/q6loTfcP7S

— Mike Ventrice (@MJVentrice) December 7, 2018