000 AGXX40 KNHC 051847 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 245 PM EDT SEP 05 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... WINDS TO GALE FORCE ARE NOTED IN BUOY OBSERVATIONS OVER THE N CENTRAL GULF...WITHIN ABOUT 60 NM OF THE COAST. CONSEQUENTLY GALE WARNINGS ARE UP FOR THE COASTAL WATERS FORECAST ZONES THROUGH THIS EVENING...BUT NOT FOR THE OFFSHORE ZONES WHERE SUSTAINED WINDS ARE BELOW GALE BUT WITH GUSTS TO GALE FORCE. A BAND OF SHOWERS AND THUNDERSTORMS PERSIST FROM THE CENTRAL GULF THROUGH THE WESTERN FLORIDA PANHANDLE. THE REMNANT LOW OF LEE IS CENTERED OVER SOUTHERN MISSISSIPPI...WITH A TRAILING TROUGH TO THE SE BAY OF CAMPECHE. WINDS AND SEAS WILL DIMINISH AS LEE WEAKENS AND LIFTS OUT THROUGH TUE. FURTHER W...NORTHERLY FLOW AROUND THE W SIDE OF THE REMNANT LOW OF LEE IS PUSHING A WEAK COLD FRONT INTO THE NW GULF WATERS. DEW POINTS ARE SEVERAL DEGREES LOWER BEHIND THE FRONT...AND THE SOMEWHAT MORE DENSE AIR BEHIND THE FRONT WILL PUSH INTO THE SW GULF TUE. THE FRONT WILL STALL FROM THE BIG BEND AREA OF FLORIDA TO THE SE BAY OF CAMPECHE BY EARLY THU. FUNNELING ALONG THE HIGH TERRAIN IN VERACRUZ STATE WILL ALLOW NORTHERLY FLOW TO PERSIST THROUGH LATE IN THE WEEK OVER THE WESTERN BAY OF CAMPECHE...AND PROMOTE DEVELOPMENT OF A WEAK LOW ALONG THE BASE OF THE FRONT OVER THE SE GULF THROUGH FRI. THE NORTHERLY FLOW ALONG WITH RESIDUAL N SWELL WILL MAINTAIN SEAS TO 9 FT OVER THE SW GULF THU INTO FRI. CARIBBEAN SEA AND TROPICAL N ATLC S OF 22N W OF 55W... WINDSAT AND BUOY DATA SHOW FRESH SE FLOW OVER THE NW GULF...WITH WINDS TO 25 KT N OF THE COAST OF HONDURAS. THIS WILL DIMINISH INTO WED...BUT INCREASE AGAIN LATE IN THE WEEK IN RESPONSE TO LOW PRES DEVELOPMENT OVER THE SW GULF. FRESH WINDS WILL ALSO PERSIST THROUGH WED OVER THE S CENTRAL CARIBBEAN DUE TO HIGH PRES N OF THE AREA. HURRICANE KATIA HAS MIGRATED N OF THE TROPICAL N ATLC ZONE NE OF THE LEEWARD ISLANDS...WITH WINDS DIMINISHING TO LESS THAN 20 KT OVERNIGHT. A TROPICAL WAVE NEAR 48W WILL MOVE W OF 55W TUE...ALLOWING WINDS TO INCREASE IN THIS SAME ARES NE OF THE LEEWARDS BY LATE TUE. THE WAVE EXITS TO THE N OF PUERTO RICO WED...AHEAD OF A MORE DEVELOPED LOW...POSSIBLY A TROPICAL CYCLONE...APPROACHING THE AREA FROM THE EAST. THE LOW PASSES 55W ON THU...MIGRATING INTO THE LEEWARD ISLANDS BY LATE FRI WITH FRESH TO STRONG WINDS AND SEAS UP TO 15 FT TO THE N OF THE LOW. INTERESTS IN THE NE CARIBBEAN SHOULD CONTINUE TO MONITOR NHC BULLETINS WITH REGARD TO THIS SYSTEM OVER THE NEXT SEVERAL DAYS. SW ATLC S OF 31N W OF 55W... HURRICANE KATIA IS CENTERED NEAR 25N63W MOVING NW TO THE SW OF BERMUDA. WINDS IN EXCESS OF TROPICAL STORM FORCE WILL EXTENDS OUT TO 180 NM FROM THE CENTER WITH TROPICAL STORM AND HURRICANE FORCE WINDS EXPECTED N OF 24N E OF 70W. SEE WTNT22 KNHC/TCMAT2 FOR FURTHER INFORMATION REGARDING KATIA. ELSEWHERE BUOY AND WINDSAT DATA FROM THIS MORNING SHOW 15 TO 20 KT S FLOW OFF THE N FLORIDA COAST...ON THE E SIDE OF THE REMNANT LOW OF LEE NOW CENTERED OVER SOUTHERN MISSISSIPPI. THIS FLOW WILL DIMINISH BY LATE TUE AS THE LOW WEAKENS AND LIFTS OUT. E SWELL TO 8 FT GENERATED FROM KATIA WILL PUSH MAINLY TO THE N OF THE BAHAMAS TOWARD THE N FLORIDA COAST BY LATE TUE AS WELL. WARNINGS... GULF OF MEXICO... .NONE. CARIBBEAN AND TROP N ATLC... .NONE. SW N ATLC... .AMZ080...HURRICANE WARNING N OF 24N E OF 70W. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER CHRISTENSEN