000 AGXX40 KNHC 061820 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 100 PM EST SAT DEC 06 2008 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO... CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. RADIOFAX SCHEDULE FOR GRAPHICAL WIND WAVE...SURFACE FORECAST AND PEAK WAVE PERIOD CHARTS HAS CHANGED. FOR THE ATLANTIC BASIN THIS INCLUDES 24...36...48 AND 72 HOUR WIND WAVE..24...48..72 HOUR SURFACE FORECAST AND 48 AND 72 HOUR PEAK WAVE PERIOD CHARTS. FOR ADDITIONAL INFORMATION PLEASE REFER TO THE FAX SCHEDULE ON THE NHC WEB SITE AT HTTP://WWW.NHC.NOAA.GOV/RADIOFAX.SHTML GULF OF MEXICO... FRONT REMAINS STALLED ACROSS THE GULF WATERS FROM JUST N OF TAMPA TO THE SW BAY OF CAMPECHE. HOWEVER...THERE ARE SIGNS OF CHANGE AS LOW PRES IS TAKING SHAPE ALONG THE FRONT NEAR 28N85W. MODELS ARE ANTICIPATING RAPID DEEPENING OF THIS FEATURE IN THE W ATLC TONIGHT. WHILE THIS WILL HAVE LITTLE EFFECT ON THE W WATERS...IT WILL DRAG THE FRONT THROUGH THE MIDDLE AND E WATERS TONIGHT AND SUN INCREASING N TO NW WINDS TO 15-20 KT N OF THE FRONT. BY SUN AND MON...HIGH PRES WILL BUILD OVER THE OHIO VALLEY AND THEN MOVE OFF THE MID-ATLANTIC COAST. THIS WILL SWING THE FLOW AROUND AND LEAD TO 15-20 KT SLY RETURN FLOW OVER THE W WATERS. SLY WINDS WILL INCREASE TO 20-30 KT FROM W-E MON NIGHT AND TUE IN RESPONSE TO THE APPROACH OF A STRONG COLD FRONT. MODELS HAVE COME INTO MUCH BETTER AGREEMENT IN THE TIMING OF THE FRONT WITH A CLUSTERING OF ITS NW GULF ENTRANCE BETWEEN TUE EVENING AND WED MORNING. GALE HEADLINES ARE POSTED FOR THE NW AND SW ZONES FOR WED BEHIND THE FRONT. ONLY CHANGE IN THE MORNING PACKAGE WAS TO INCREASE WINDS TO 45 KT IN THE SW GULF TO LEAN TOWARD THE GFS GUIDANCE. CARIBBEAN AND TROP N ATLC... RETREATING HIGH PRES OVER THE W ATLC IS MAINTAINING MODERATE TRADES OVER THE CENTRAL CARIBBEAN...STRONGEST IN THE TYPICALLY ENHANCED NEAR THE COAST OF COLOMBIA. LITTLE CHANGE OR SLIGHT WEAKENING OFF THE TRADES ARE EXPECTED THROUGH THE REMAINDER OF THE WEEKEND AS LOW PRES TAKES SHAPE OVER THE W ATLC...WEAKENING THE GRADIENT IN THIS AREA. HOWEVER...STRONGER HIGH PRES WILL BUILD E OFF THE CAROLINA COAST LATE MON AND INTO THE ATLC THROUGH MID-WEEK INCREASING TRADES TO 20-25 KT OVER A LARGE PORTION OF THE AREA. NE SWELLS HAVE DIMINISHED OVER THE TROP N ATLC ZONE AND SEAS SHOULD RUN MAINLY IN THE 4-6 FT RANGE BEFORE THE ONSET OF THE TRADE WIND INCREASE LATE MON. SW N ATLC... AN UPPER TROUGH APPROACHING THE AREA WILL ENERGIZE THE FRONT OVER THE NW WATERS LATER TODAY. WINDS WILL QUICKLY INCREASE TO 20-25 KT ON BOTH SIDES OF THE BOUNDARY TONIGHT AND SUN AS LOW PRES RAPIDLY DEEPENS OFF THE ERN U.S. COAST. THE FRONT...AND ITS ASSOCIATED WINDS... WILL WEAKEN AND STALL SUN NIGHT AND MON FROM 26N65W TO E CUBA BUT NW SWELL WILL SPREAD ACROSS MUCH OF THE AREA ELEVATING SEAS TO 10 FT. STRONG HIGH PRES BUILDS E MON THRU WED INCREASING E TO SE FLOW AHEAD OF THE NEXT COLD FRONT MOVING THROUGH THE GULF OF MEXICO. ATLANTIC... NONE. CARIBBEAN... NONE. GULF OF MEXICO... NONE. FORECASTER CANGIALOSI. TROPICAL PREDICTION CENTER.