The intensity of the SSW event on the ECMWF is absolutely amazing. Current -15C anoms above Siberia become +70C by Tuesday. That's a rise of 150F in 4 days!! Some uncertainty as to exactly how this affects our pattern, but chances of cold/snow in the East likely improve for Jan pic.twitter.com/yjJIxUTySd

— Jack Sillin πŸ‡ΊπŸ‡¦ (@JackSillin) December 21, 2018