000 AGXX40 KNHC 110807 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 400 AM EDT FRI MAY 11 2012 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... A 1014 MB HIGH PRES AREA CENTERED S OF MOBILE BAY NEAR 29N87W WILL SHIFT EAST THROUGH FRI FOLLOWING A WEAK COLD FRONT THAT IS MOVING THROUGH THE SE GULF WATERS. A TROUGH WILL PUSH OFF THE TEXAS COAST LATE SAT...REACHING FROM LOUISIANA TO NW YUCATAN BY LATE SUN...BEFORE BECOME STALLING AND BECOMING DIFFUSE MON OVER THE EASTERN GULF. LIGHT TO MODERATE NE FLOW WILL PERSIST ACROSS THE GULF MON AND TUE. CARIBBEAN SEA AND TROPICAL N ATLC... SCATTERED SHOWERS AND THUNDERSTORMS ASSOCIATED WITH AN UPPER TROUGH OVER THE EASTERN CARIBBEAN PERSIST OVER THE WINDWARD AND LEEWARD ISLANDS AND ADJACENT ATLANTIC WATERS. THIS ACTIVITY WILL DIMINISH THROUGH TODAY AS THE UPPER TROUGH MIGRATES EAST AND DAMPENS OUT. HIGH PRES BUILDING N OF THE AREA BEHIND A FRONT MOVING THROUGH THE BAHAMAS WILL MAINTAIN FRESH E TRADES FROM E OF THE ISLANDS THROUGH THE CENTRAL CARIBBEAN SAT THROUGH MON. EXPECT WINDS TO 25 KT ALONG THE MOUNTAINOUS COAST OF VENEZUELA AND COLOMBIA. SEAS WILL BUILD TO AS HIGH AS 9 FT IN E SWELL. SW N ATLANTIC... A COLD FRONT FROM 31N71W TO 24N80W WILL WEAKEN AS IT REACHES FROM 31N55W TO 26N69W BY LATE SUN. A TROUGH WILL MIGRATE THROUGH THE GULF THOUGH TUE. THE GFS CONTINUES TO SHOW THE DEVELOPMENT OF A WEAK LOW PRES AREA OVER GEORGIA AND N FLORIDA BY MON...MIGRATING INTO THE WATERS N OF THE NORTHERN BAHAMAS BY TUE. FORECAST REFLECTS A BLEND OF THE GFS WITH THE MORE CONSERVATIVE UKMET AND ECMWF...WITH A WEAK TROUGH MIGRATING OF THE COAST OF NE FLORIDA BY TUE. A LIGHT PRES PATTERN WILL MAINTAIN MODERATE E TO SE FLOW OVER THE AREA FRI THROUGH TUE. NOTE... EFFECTIVE APR 3 2012 AT 1800 UTC THE OFFSHORE WATERS FORECAST ZONES CHANGED FOR THE CARIBBEAN AND SW N ATLANTIC AND THE GULF OF MEXICO. ISSUANCE TIME FOR THE GULF OF MEXICO OFFSHORE WATERS FORECASTS IS REFERENCED TO THE EASTERN TIME ZONE. FOR DETAILS SEE WWW.NHC.NOAA.GOV/ABOUTTAFBPROD.SHTML#OWF GRIDDED MARINE OUTPUT IS AVAILABLE AT WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE GULF OF MEXICO... .NONE. CARIBBEAN SEA... .NONE. ATLANTIC... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT WWW.HURRICANES.GOV/MARINE $$ FORECASTER CHRISTENSEN