The forecast for Hanna
Since the center of circulation is fairly far removed from Hanna's heaviest thunderstorms, Hanna's center could reform to the southeast later today. This re-formation would alter the storm's eventual track, and make it less likely to recurve out to sea. Steering currents imparted by the counterclockwise flow around the upper-level low to its west will keep Hanna moving northwest, to a point midway between Bermuda and the Bahama Islands. About the four days from now, a strong blocking ridge of high pressure is forecast by most of the models to build over Hanna, forcing it to the southwest towards the Bahamas. The exception is the GFS model, which takes Hanna northeast out to sea. I'm discounting this solution at present, since it is the outlier. About five day from now, wind shear is expected to increase due to an upper level trough to the north. Upper level outflow from Gustav may also create some shear. The models respond by weakening Hanna to a tropical storm. In the very long range, the ECMWF model predicts Hanna will hit Cuba on Tuesday, then pass through the Florida Keys next Thursday. The NOGAPS model brings Hanna just off the South Carolina coast, and the other models stall it out northeast of the Bahamas. At this time, Hanna's intentions are a mystery. No Hurricane Hunter missions are scheduled into Hanna yet.