Just took a glance at the latest GFS run, I saw something crazy. Now before I get criticized, I really don't think this will happen. The latest run shows a sub-tropical low forming over the Bahamas and moving up the east coast. Now for a sub-tropical low to form around this time of year isn't all too rare. In fact, they have affected the east coast during the winter before. The Blizzard of 2006 was a sub-tropical low when it formed, then it hit an arctic front to the north, making more extra-tropical. This is also why the storm was debated whether it was tropical or not, because the storm formed a perfect eye, very similar that of a major hurricane. Although this model run doesn't show an arctic front. I don't believe this will happen, but hey, you can't rule it out!