000 AGXX40 KNHC 271801 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT THU SEP 27 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... HIGH PRESSURE IS CENTERED N OF THE AREA OVER THE SE UNITED STATES WITH ANTICYCLONIC FLOW PREVAILING ACROSS THE GULF OF MEXICO. LATEST SCATTEROMETER...SHIP...AND BUOY OBSERVATIONS INDICATE GENTLE TO MODERATE WINDS PREVAIL ACROSS THE AREA WITH SEAS GENERALLY 3 FT OR LESS. LOW PRES AND ASSOCIATED COLD FRONT ARE EXPECTED TO MOVE OFF THE TEXAS COAST EARLY SUN MORNING. THE LOW AND FRONT WILL SLOWLY SHIFT EASTWARD REACHING FROM THE FLORIDA PANHANDLE TO THE BAY OF CAMPECHE MON NIGHT WHERE IT WILL STALL. SOUTHWEST NORTH ATLC S OF 31N W OF 55W... WEAK HIGH PRESSURE PREVAILS N OF THE AREA. THE PRESSURE GRADIENT IS WEAK ACROSS THE AREA...AND THE LATEST SCATTEROMETER...SHIP... AND BUOY OBSERVATIONS DEPICT GENTLE TO MODERATE TRADEWINDS PREVAIL. SEAS ARE GENERALLY 4 TO 6 FT E OF THE BAHAMAS AND 3 FT OR LESS W OF THE BAHAMAS ISLAND CHAIN. A SURFACE TROUGH IS LOCATED OVER THE EASTERN PART OF ZONE AMZ127. THE TROUGH WILL GRADUALLY WEAKEN AS IT DRIFTS ACROSS THIS ZONE THROUGH SAT. THE TROUGH WILL THEN LIFT N OF THIS ZONE SAT BEFORE DISSIPATING ON SUN. A SURFACE RIDGE WILL PREVAIL N OF THE AREA THROUGH MON WHEN THE RIDGE WILL SHIFT SOUTHWARD INTO THE NORTHERN PART OF THE SW N ATLC WATERS. WINDS AND SEAS WILL REMAIN BELOW ADVISORY CRITERIA THROUGH THE FORECAST PERIOD. CARIBBEAN SEA AND TROPICAL N ATLC W OF 55W... A TROPICAL WAVE OVER THE CENTRAL CARIBBEAN WATERS. LATEST SCATTEROMETER...SHIP...AND BUOY OBSERVATIONS DEPICT GENTLE TO MODERATE TRADES PREVAIL ACROSS THE CARIBBEAN AND TROPICAL N ATLC WATERS. THE TROPICAL WAVE WILL CONTINUE ITS WESTWARD TRACK ENTERING THE WESTERN CARIBBEAN WATERS TONIGHT...THEN SLOWLY MOVING ACROSS THE WESTERN CARIBBEAN FRI THROUGH THE WEEKEND. TRADES WILL REMAIN WEAK THROUGH FRI AS THE DRIVING HIGH PRES TO THE N REMAINS WEAKEN. OVER THE WEEKEND...HIGH PRES IS EXPECTED TO BUILD IN THE CENTRAL ATLC WHICH WILL RESULT IN A TIGHTER PRES GRADIENT OVER THE CENTRAL CARIBBEAN WATERS. THIS WILL FRESHEN THE TRADES OVER THIS AREA. 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 AL