Maybe feb is where north America gets the lions share of the cold air? 2014-15 was a good winter that started on Feb 15 Also...I get losing the gfs blizzard but why was it all or nothing lol. It had to go from 25 to 0 instead of 25 to 4 lol.
NAM 3k is interesting. Shows 850 at 0 for most of the storm. So if there is precip...maybe a surprise?
https://www.tropicaltidbits.com/analysis/models/?model=nam3km®ion=neus&pkg=T850&runtime=2021012500&fh=25