Total snowfall. It doesn’t tell you what will actually be on the ground when all is said and done. There is also a “Snow Depth” map but I usually find it to be overly pessimistic.
Accuracy will be higher at shorter time leads, so the fact that GFS at 72-84 seems to be an improvement over where it was at 12z is encouraging. What happens when the storm gets to 100+ hours is still within the envelope of uncertainty.
Still early, but gotta say I’m impressed how everything has been trending towards the GFS once again. It was the first to sniff out this inland track and ensembles and European seem be playing catch up.