000 AGXX40 KNHC 100643 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 200 AM EST THU NOV 10 2011 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... COLD FRONT FROM FLORIDA PANHANDLE TO WESTERN BAY OF CAMPECHE WILL EXTEND FROM NW FLORIDA TO EASTERN BAY OF CAMPECHE THIS AFTERNOON. GALE FORCE WINDS ARE EXPECTED W OF THE FRONT OVER THE SW GULF S OF 21N W OF 94W TODAY. OTHERWISE NLY WINDS 20-25 KT ELSEWHERE W OF THE COLD FRONT. THE FRONT MOVES E OF THE AREA AND WINDS DECREASE TO BELOW GALE FORCE FRI. HIGH PRES BUILDS ACROSS THE AREA FRI THEN SHIFTS EWD SAT AND SLY RETURN FLOW INCREASES TO 15-20 KT OVER THE FAR NW GULF. AS THE HIGH MOVES ACROSS THE E COAST OF THE U.S. AND LOWER PRES DEVELOPS OVER THE SW CARIBBEAN THE PRES GRADIENT TIGHTENS AND ELY WINDS INCREASE TO 20 KT OVER THE SE GULF ON SUN. THE HIGH WEAKENS AND ELY WINDS DECREASE OVER THE SE CARIBBEAN. SW N ATLC S OF 31N W OF 65W... TROPICAL STORM SEAN NEAR 29.9N 70.8W AT 0600 UTC MOVING TO THE N AT 7 KT WITH THE PRES AT 991 MB WITH WINDS 55 KT GUST TO 65W KT. SEAN WILL MOVE JUST N OF THE AREA NEAR 31.8N 68.3W THIS EVENING AND INTENSIFY INTO A MINIMAL HURRICANE THEN MOVE WELL N OF THE AREA FRI AS A COLD FRONT MOVES OFF THE SE U.S. COAST. THE COLD FRONT WILL EXTEND FROM 31N73W TO S FLORIDA EARLY FRI AND FROM 27N TO E CUBA SAT THEN E OF THE AREA SUN. STRONG HIGH PRES BUILDS BEHIND THE FRONT. CARIBBEAN SEA AND TROPICAL N ATLC... COLD FRONT WILL MOVE INTO THE YUCATAN CHANNEL FRI THEN WEAKEN FROM E CUBA TO GULF OF HONDURAS SAT AND DISSIPATE SUN. STRONG HIGH PRES BUILDS OVER THE SE U.S. SAT AND NE WINDS INCREASE TO 20 KT OVER THE NW CARIBBEAN. THE HIGH MOVES E AND THE PRES GRADIENT WEAKENS AND WINDS DECREASE OVER THE NW CARIBBEAN. LARGE SWELLS IN THE TROPICAL ATLC ZONE WILL SUBSIDE THROUGH MON. WARNINGS... GULF OF MEXICO... .GALE WARNING S OF 21N W OF 94W...GMZ082. .CARIBBEAN SEA AND TROPICAL N ATLC... .NONE. .SW N ATLC... .HURRICANE WARNING N OF 27N E OF 76W...AMZ080. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER DGS