Looking ahead into mid and late December, it seems that all but 1 ensemble member are forecasting a strong negative NAO. Considering it's only one ensemble member against 3, I support the idea of a deep negative NAO through December. Into January, we see the ensemble members regulate themselves, which seems a little too conservative to me. If Siberia's snow cover in October comes true, the AO will be negative, and the close relationship between the AO/NAO tells me that the NAO is more likely to be negative like the AO will probably be in mid-late January.
February brings the ensemble members going every which way, so I don't feel like it's a good idea to decipher that month until the ensemble forecast members have settled down. Despite this February uncertainty, the other two winter months certainly are looking supportive of a cool and stormy Northeast and general East US.