000 AGXX40 KNHC 060731 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 330 AM EDT WED APR 06 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... STLT IMAGERY THIS MORNING SUGGESTS COLD FRONT HAS BECOME STATIONARY ACROSS THE SRN GULF W OF 84W...WHILE FRONT CONTINUES TO PROGRESS E ACROSS THE W ATLC. SCAT PASSES MISSED THE FRONTAL ZONE TO THE NW OF THE YUCATAN TONIGHT...BUT 20 KT NE TO N WINDS AND SEAS TO 9 FT ARE STILL ASSUMED TO BE OCCURRING WITHIN A BAND JUST NW OF THIS BOUNDARY ATTM. BUOY 42055 IN THE SW GULF HAS DROPPED TO 9 FT IN PAST FEW HOURS...WHILE PEMEX BUOYS IN WHAT WE REFER TO AS GULF OF CAMPECHE...AND TO THE S OF 42055...WHERE MEASURING SEAS NEAR 8 FT AT MIDNIGHT LOCAL TIME. WIND AND SEAS WILL CONTINUE TO TREND DOWNWARD QUICKLY THIS MORNING AND LIKELY BE BELOW 20 KT AND AT 8 FT OR LESS BY 12Z. WEAK HIGH PRES ALONG THE SE LOUISIANA AND S MISSISSIPPI COASTS YIELDING E TO SE WINDS ALREADY ACROSS THE NW QUAD OF THE BASIN. AS THIS HIGH SLIDES E-NE NEXT 24 HOURS...RETURN FLOW WILL AGAIN SETUP QUICKLY ACROSS THE BASIN...REACHING NEAR 20 KT ACROSS W PORTIONS BY THU MORNING. THIS PATTERN TO HOLD THROUGH SUN AS HIGH PRES GENERALLY RESIDE ACROSS THE W ATLC...WHILE S TO SE WINDS AROUND 20 KT EXPAND WWD TO 90W. MODELS FINALLY BRING NEXT FRONT INTO NW GULF SUN NIGHT WHICH QUICKLY LAYS DOWN W TO E ACROSS ALONG 25N MON THROUGH TUE MORNING BEFORE WASHING OUT AND BEGINNING TO LIFT N ACROSS THE W HALF TUE NIGHT. CARIBBEAN SEA AND TROPICAL N ATLC... 1027 MB HIGH ACROSS THE W CENTRAL ATLC E OF BERMUDA SHIFTING GRADUALLY EWD THIS MORNING AND INDUCING INCREASED PRES GRADIENT TO THE S OF THE ASSOCIATED RIDGE...AND EXPANDING FRESH NE TO E TRADES ACROSS THE TROPICAL N ATLC WATERS. RECENT SCAT PASSES SHOW FRESH TRADES ACROSS THE SRN CARIB E OF 79W AND IN THE GULF OF HONDURAS...WHILE LLVL WIND SURGE CONTINUE TO AFFECT THE NE CARIB...PUERTO RICO AND HISPANIOLA WITH E TO SE WINDS AROUND 20 AT SFC. AS FRONT PROGRESSES E ACROSS W ATLC AND HIGH SHIFTS NE... GRADIENT WILL BEGIN TO RELAX TONIGHT ACROSS THE BASIN AND LEAVE FRESH TRADES CONFINED TO S PORTIONS. HIGH BEHIND FRONT TO THEN BECOME QUASISTATIONARY ACROSS THE W ATLC THU THROUGH SAT AND ACT TO SPREAD FRESH TRADES ACROSS MUCH OF THE CARIB...AS WELL AS THROUGH GULF OF HONDURAS. GRADIENT DOES NOT APPEAR TO BE STRONG ENOUGH DURING THAT TIME FOR MORE THAN A VERY SMALL AREA OF WINDS TO 30 KT OFF THE COAST OF COLOMBIA. SOUTHWEST N ATLC W OF 55W... COLD FRONT CONTINUES TO MOVE E AND AWAY FROM FLORIDA THIS MORNING WHILE SNAGGING AND BECOMING DIFFUSE ACROSS S FLORIDA. BOUNDARY DOES HOWEVER STILL HAVE A STRONG SIGNAL ACROSS THIS AREA IN TPW IMAGERY. RECENT SCAT PASSES SHOWED 20 KT NW WINDS BEHIND FRONT AND 20-25 KT S TO SW WINDS AHEAD OF IT AND N OF 28.5N. FRONT IS EXPECTED TO REACH FROM 31N69W TO NW BAHAMAS TO FLORIDA KEYS BY 12Z BEFORE DISSIPATING ACROSS THE STRAITS THIS AFTERNOON. HIGH PRES WILL BUILD BEHIND PROGRESSING BOUNDARY WITH WINDS QUICKLY VEERING NE TO E TODAY...WITH 15-20 KT TO BE EXPECTED WITHIN A BAND ABOUT 60-90 N OF BOUNDARY E OF BAHAMAS. LIGHT TO MODERATE ANTICYCLONIC FLOW WILL THEN PREVAIL THROUGH SAT MORNING AS HIGH PRES RESIDES ACROSS THE AREA YIELDING SE TO S WINDS 15 KT AND LESS W OF 75W...AND MODERATE EASTERLIES S OF 24N. WARNINGS.. ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER STRIPLING