Newest GFS putting up a much more amplified (impactful) solution for Mid Atlantic part of the upcoming storm compared to flatter ECMWF idea. Why? EC drives a strong s/w through New England Sat night which opens suppressive flow in the Atlantic. GFS holds that way back in N Canada pic.twitter.com/NhxPrMbFve
— Jack Sillin πΊπ¦ (@JackSillin) December 4, 2018