My snow thing is to watch heavy snow fall, get out in it while it’s fresh, then count the minutes till it’s gone so I don’t have to worry about breaking bones on the ice.
No. Maybe day of event but NAM is never a complete go to except under certain circumstances-maybe severe wx. That’s an old myth about tossing the euro/gfs close in. I believed it but learned otherwise.
All of those clown maps are guesses and produced by the vendor, not the model. I would advise ignoring them and looking at soundings, snow growth, and qpf.