What are you talking about? Strong antecedent high in Quebec is a must for snow in these parts. Too far east and we get southeast winds eating any surface CAD.
We're about a week out and I'm still largely suspicious that we even meet climo this winter. If things are holding serve on 12z Friday, then maybe we're onto something. I hope I'm wrong and have to eat crow.
Confluence can and does trend stronger as an event nears. There are not many upper air sites in eastern Canada. See the Dec 2009 event. There was forecast to be a sharp snowfall gradient in PA and as the event closed a piece of the confluence was analyzed by the RAOB network in the northeast US. It caused the snowfall forecast for central PA to bust too high.