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A bit of the Forecast Side of the Discussion, but noteworthy. AFTER 48 HR...THE GUIDANCE IS DIVERGENT AND INCONSISTENT. THE ECMWF SHOWS TOMAS MOVING ALONG THE SOUTHERN PERIPHERY OF THE DEEP-LAYER TROUGH...AND THIS IS CONSISTENT WITH ITS PREVIOUS RUN. THE GFS...GFDL...AND HWRF NOW CALL FOR TOMAS TO MOVE RAPIDLY NORTHWARD AND BE ABSORBED INTO THE TROUGH...WHICH IS A MAJOR CHANGE FROM THE 6 HOUR OLD RUNS. ON THE OTHER HAND...THE NOGAPS...WHICH 6 HR AGO WAS CALLING FOR A CONTINUED NORTHWARD MOTION...NOW CALLS FOR AN EASTWARD TURN SIMILAR TO THE ECMWF. OVERALL...THE GUIDANCE ENVELOPE HAS SHIFTED NORTHWARD FROM THE PREVIOUS ADVISORY. THE 72-120 HR PORTION OF THE TRACK WILL ALSO BE SHIFTED NORTHWARD...BUT IS WELL SOUTH OF THE CONSENSUS MODELS AND THE CENTER OF THE GUIDANCE ENVELOPE. THIS PART OF THE FORECAST TRACK IS LOW CONFIDENCE. |