The good things about the current 8-10 day threat, imo.
based off the model evolutions... if anything we need to Canadian vortex to kick east quicker than what the euro shows. It hangs out over the Great Lakes for a while and makes it difficult for the energy ejecting in the southern stream to get out of the deep gulf. As a result of this look we have plenty of room to work with on temperatures... If it plays out like typical I expect the Canadian vortex to trend weaker and eject East faster, which should allow for more southern stream amplification. But with the orientation of the ridging if it does trend that way we should have a perfectly located mega high pressure in damming position with very cold dry air in place. To be clear, a quicker ejecting vortex would typically mean retreating cold air... but in this case it’ll mean a better high pressure placement while still having arctic sourced air, so it may be a good thing. (Also of note the vortex is ejecting in a south eastward trajectory thanks to the blocking which really is what makes this set up so good, if it just pushed northeast back towards the pole it would mean a more typical crummy set up).
as such, the goal post are very wide right now for a winter storm in that timeframe. I worry more about suppression right now... and if the last weeks trends are any indication we will probably see things shift north and more relaxed, placing us right in the crosshairs of a major winter storm.