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2PM NOAA Discussion THE TRACK FORECAST BEYOND DAY 2 HAS BECOME PROBLEMATIC. DYNAMICAL MODELS DEPICT THE CYCLONE MOVING INTO A BREAK IN THE SUBTROPICAL RIDGE NORTH OF THE GULF COAST IN ABOUT 72 HOURS. HOWEVER THERE IS A LARGE SPREAD AMONG THE MORE RELIABLE TRACK MODELS. FOR EXAMPLE... THE ECMWF FORECAST IS ABOUT 300 N MI EAST OF THE GFS SOLUTION AT DAY 3. SINCE THE DYNAMICAL MODEL CONSENSUS HAS SHIFTED WESTWARD...THE OFFICIAL TRACK FORECAST IS MOVED A BIT TO THE WEST OF THE PREVIOUS ONE. THIS REQUIRES AN EXTENSION OF THE HURRICANE WATCH WESTWARD ALONG THE LOUISIANA COAST. IT SHOULD BE NOTED THAT THERE IS GREATER THAN USUAL UNCERTAINTY IN THE TRACK FORECAST. |