000 AGXX40 KNHC 280646 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 145 AM EST SUN DEC 28 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... COLD FRONT OVER NW WATERS WITH COLD AIR ADVECTION EXPECTED TO INCREASE NNE WINDS W OF FRONT BRIEFLY TO 30 KT BEFORE RELAXING TO MAX OF 25 KT TONIGHT. MODELS DIFFER SLIGHTLY...BUT EXPECT FRONT TO SLOW OVER CENTRAL GULF BUT THE E SEGMENT OF FRONT EXPECTED TO SLIP INTO FL STRAITS AND YUCATAN CHANNEL LATE MON NIGHT. RIDGE BUILDS SW DISSECTING GULF FROM NW FLORIDA TO SE TEXAS TUE WITH SLY RETURN FLOW OVER THE NW PORTION. RIDGE SHIFT S AND LIES E-W ALONG 25N WED AS THE NEXT WEAK COLD FRONT MOVES S OVER THE NORTHERN WATERS BUT SEEMS TO STALL OR DRIFT SLOWLY S BY THU WITH WINDS BECOMING NE TO E S OF FRONT AND NE 15-20 KT N OF FRONT. ATLC... A FRONTAL TROUGH IS WASHING OUT ALONG 25N E OF THE BAHAMAS ATTM. A RIDGE HAS BUILT SW OVER THE NW WATERS REACHING FL E COAST AT 30N. RIDGE EXPECTED TO SHIFT SE TO PSN FROM BERMUDA TO CENTRAL FL TONIGHT THEN RETRACT E OF THE CENTRAL BAHAMAS MON. THIS WILL ALLOW A COLD FRONT TO MOVE OFF THE NE FL COAST MON AFTERNOON REACHING THE EXTREME NW BAHAMAS MON NIGHT...THEN THE FRONTAL SEGMENT W OF THE BAHAMAS WILL DRIFT SLOWLY SE THROUGH FL STRAITS TUE. ON THE OTHER HAND...THE FRONTAL SEGMENT E OF THE BAHAMAS GETS A RE-INFORCING N SURGE AND PUSHES THE FRONT SE TO NEAR HISPANIOLA LATE TUE AND THEN E OF DISCUSSION AREA WED NIGHT. WEAK HIGH PRES BUILDS W OF FRONT ALONG 29N...BUT SHIFTS RAPIDLY E TO NEAR BERMUDA WED AFTERNOON. BY THEN...A SECOND COLD FRONT MOVES INTO THE NW ATLC WATERS AND RACES E TO BERMUDA THU AFTERNOON BUT THE SOUTHERN SEGMENT OF THE SEEMS TO STALL ALONG 27N ACROSS FL INTO THU NIGHT. CARIBBEAN AND TROPICAL ATLC WATERS... ENTIRE AREA UNDER NE LOW LEVEL FLOW AT 20-25 KT EXCEPT 25-30 KT NEAR N COAST OF COLOMBIA. GRADIENT WILL RELAX SOME LATE TONIGHT AND MON AS A WEAK COLD FRONT MOVES INTO NW CARIBBEAN ACCOMPANIED BY A BRIEF SURGE IN NE WINDS 15-20 KT S OF CUBA. FRONT WILL MOVE E TO WINDWARD PASSAGE LATE TUE AND TO MONA PASSAGE WED MORNING THEN SEEMS TO WASH OUT THE NORTHERN WATERS OF TROPICAL ATLC ZONE WED NIGHT AND THU. ATLANTIC... NONE. CARIBBEAN... NONE GULF OF MEXICO... NONE. FORECASTER NELSON. TROPICAL PREDICTION CENTER.