I think the -AO is the key, and statistically it usually is for colder than average/snowier winters here and also the odds of getting a legit -NAO to develop. Makes some sense given the QBO trends combined with the solar min (should correlate to a weaker PV). Also some support for a -EPO given the current SSTs in the Pac. The 'current' PDO look is subject to change though as we move further into Fall, much more so than the ENSO, which will likely be neutral for winter. Hopefully the atmosphere behaves more Ninoish. Overall though you have to like the early signs.