If you read my Sunday night post you can see I am setting the scenario for what will eventually be a snowy situation as we segue into December. A few things to note in this blog posting. First, both the GFS and European forecast models show the NAO (North Atlantic Oscillation) tanking to negative levels. When that happens the threat for cold and snow increase exponentially!
A look at the 6-10 day forecast from today shows us that a deep trough will setup over the east coast. This means a rush of cold air will come down from central Canada reaching the east coast by next week. High latitude blocking (denoted in red) over Greenland will allow the storm track to run up the east coast. Essentially any storm that moves across the USA will get hung up off the North Carolina coastline. There are only two tracks that can exists. If the NAO is negative the track would come right up the east coast. However, if we have a neutral situation the track would bring a storm off shore missing the I 95 cities.