000 AGXX40 KNHC 280739 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 240 AM EST WED NOV 28 2012 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND TROPICAL N ATLC...AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... A WEAKENING COLD FRONT EXTENDS ACROSS THE REGION FROM N CENTRAL FLORIDA TO THE SW GULF. SCATTEROMETER DATA AND SURFACE OBS SHOW MODERATE N-NE WINDS N OF THE FRONTAL BOUNDARY AND LIGHT TO GENTLE WINDS ELSEWHERE...WITH THE ILL-DEFINED FRONT PRIMARILY IDENTIFIED BY A SHIFT IN WIND DIRECTION. THE BOUNDARY WILL DISSIPATE AS IT MOVES S FROM SOUTHWEST FLORIDA TO 19N96W BY THIS EVENING. HIGH PRES WILL SLOWLY MOVE E ALONG 35N THU THROUGH SAT. THIS WILL INDUCE GENTLE-MODERATE SE WINDS W OF 90W AND MODERATE TO FRESH E WINDS ARE EXPECTED E OF 90W...WITH STRONGEST WINDS EXPECTED IN SOUTHERN GULF FROM PRES GRADIENT BETWEEN THE RIDGE AND A SURFACE TROUGH EXTENDING THROUGH THE YUCATAN CHANNEL INTO THE S GULF AS WELL AS A LINGERING SHEAR LINE BOUNDARY IN STRAITS OF FLORIDA. CARIBBEAN SEA AND TROPICAL N ATLC S OF 19N W OF 55W... WINDS AND SEA HEIGHTS ARE BEGINNING TO DIMINISH OVER THE CENTRAL CARIBBEAN AS A WEAK FRONT PUSHING INTO NORTHERN FLORIDA DISRUPTS THE SUBTROPICAL RIDGE ALONG 30N. AN OSCAT PASS AT 0410 UTC SHOWED FRESH E-NE WINDS BETWEEN NORTHERN COLOMBIA AND JAMAICA...WHILE BUOY 42058 NEAR 15N75W SHOWS 20 KT WINDS AND 10 FT SEAS. WINDS IN THE CENTRAL CARIBBEAN WILL STEADILY DIMINISH THROUGH SAT. FRESH TRADE WINDS AND SEAS TO 8-9 FT IN E SWELL ACROSS THE TROPICAL N ATLC WILL DIMINISH AS WELL TONIGHT THROUGH SAT. SW N ATLC N OF 19N W OF 55W... AN AREA OF FRESH E-NE TRADE WINDS REMAINS N OF PUERTO RICO WITH SEAS TO 8 FT BASED ON BUOYS 41043 NEAR 21N65W...AND 41044 NEAR 21.5N58.5E. LITTLE CHANGE IS EXPECTED THROUGH THU. A WEAK COLD FRONT MOVING OFF THE COAST OF NE FLORIDA WILL SHIFT THE RIDGE ALONG 30W EASTWARD THROUGH THU. THE COLD FRONT WILL REACH FROM 31N69W TO THE NORTHERN BAHAMAS THIS EVENING AND FROM 31N55W TO THE CENTRAL BAHAMAS THU EVENING...THEN STALL AND TRANSITION TO A SHEAR LINE FRI AND SAT. HIGHEST WINDS WILL BE JUST N OF THE BOUNDARY THU AND FRI. NOTE...GRIDDED MARINE FORECAST IS AVAILABLE AT WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE GULF OF MEXICO... .NONE. CARIBBEAN SEA AND TROPICAL N ATLC... .NONE. SW N ATLANTIC... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT WWW.HURRICANES.GOV/MARINE $$ FORECASTER MUNDELL