Putting together the 7 day forecast this afternoon. We continue to notice a distinct difference between two of the most trusted long range forecast models regarding an incoming cold front and what will become of Tropical Storm Sandy.
The latest track from the National Hurricane Center puts Sandy over Jamaica and into Cuba as a Category 1 Hurricane. From there is tracks north and then makes a right turn out to sea after leaving the Bahamas.
Here are the two scenarios we are looking at in the WAFF 48 Storm Tracking Center. Scenario 1 is from the ECMWF forecast model. Scenario 2 is the GFS forecast model. The black lines represent line of equal pressure. There are more of them around the center of circulation to Tropical Storm Sandy.
Both solutions are close up to the Noon hour on Saturday. The ECMWF is a little farther west and closer to the US coastline. Saturday night the GFS model takes Sandy out to sea as the cold front moves into the Southeast. However the ECMWF makes a drastic turn into New England Sunday and creates a hybrid tropical storm/winter storm.
The European (ECMWF) model has been very consistant with this hybrid system moving into the Northeast. Something to keep a close eye on if you have weekend travel plans. Regardless of the outcome we are expecting little change to the forecast for the Tennessee Valley. A cold front will move in Saturday and provide a few showers. This will be followed by much cooler air. Highs will only be in the 60s.