Feb 1st starting to look a bit interesting for NTX again. GFS is joining CMC today but still look a bit too warm. Plenty of time left for changes of course!
Edit 0z 1/27 - Canadian is really ramping up for next week and now shows NTX basically under ice for two straight days. The 2m temps for most of that period has a significant divergence (15-20F) between CMC and GFS, which makes all the difference in this case. I don't recall I ever seen that divergence at this range.