000 AGXX40 KNHC 181752 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 100 PM EST SUN JAN 18 2009 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO... CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO...COLD FRONT NOW OVER NORTHERN WATERS WITH SW WINDS SUSTAINED AT 15-20 KT AHEAD OF FRONT AND EXPECTED TO INCREASE TO 20-25 KT LATE THIS AFTERNOON. THE NW WINDS BEHIND FRONT NOT EXPECTED TO CRANK UP TO 20 KT TILL AROUND MIDNIGHT TONIGHT. ALREADY SEE WIND SHIFT ASSOCIATED WITH SECONDARY SURGE OVER AR AND NW LA. THIS SECONDARY SURGE MAY ARRIVE LATE TONIGHT...THUS A LITTLE EARLIER THAN THE MON ARRIVAL MENTIONED IN THIS MORNINGS OFFNT4. EXPECT N WINDS 15-20 KT MOST OF AREA LATE TUE PUSHING N SWELLS AND COMBINED SEAS TO 11 FT INTO FL STRAITS AND YUCATAN CHANNEL WED NIGHT. HIGH PRES CENTER IN WAKE OF FRONT WILL SHIFT SE INTO N-CENTRAL GULF WED...THEN QUICKLY SHIFT E TO OVER N-CENTRAL FL THU ALLOWING SLY FLOW TO SET UP ACROSS ENTIRE GULF BY THU NIGHT. FLOW INCREASES TO 20 KT OVER W PART THU NIGHT INTO EARLY FRI WITH NEXT FRONT OVER TX COAST AROUND MIDNIGHT FRI NIGHT AND REACHING MS DELTA SUNRISE SAT. BEST GUESS ATTM IS NEXT FRONT WILL NOT BE AS STRONG AS TOMORROWS FRONT. ATLC AND CARIBBEAN...SITUATION REMAINS DYNAMIC. BROAD FRONTAL BOUNDARY EXTENDS ALONG 31N56W 30N61W TO DOMINICAN REPUBLIC. ONE SHIP REPORT AND RECENT VIS IMAGERY INDICATES A FRONTAL WAVE LOW MAY BE DEVELOPING ALONG FRONT AT 29.5N61W. ANYWAY...EXPECT THESE FRONTAL REMNANTS TO MEANDER INTO WED WITH THE SOUTHERN SEGMENT DRIFTING W...BUT MORE IMPORTANTLY WITH A WIND SHIFT TO 20 KT WILL CONTINUE EITHER SIDE OF AXIS AS CENTRAL ATLC RIDGE BUILDS SE TO HISPANIOLA BY TUE. FURTHER N...EXPECT A SERIES OF FRONTS TO SWEEP THROUGH THE AREA WITH THE GRADIENT SUPPORTING SW-NW SURFACE WINDS TO MINIMAL GALE BEGINNING LATE TONIGHT THROUGH MIDDAY WED OVER THIS DISCUSSION AREA...W OF 55W. I SIMPLIFIED PREVIOUS WORDING IN OFFNT3 TO A GALE WARNING N OF 27N TONIGHT AND MON WITH EXPECTED WARNING CONDITIONS SPREADING S TO ALL WATERS N OF 25N W OF 65W TUE. AS MERGED FRONT WASHES OUT OVER SE WATERS THU HIGH PRES OVER N-CENTRAL FL WILL RIDGE E ALONG 27N. CARIBBEAN TROUGH STILL EVIDENT FROM DOMINIC REPUBLIC TO NW COLOMBIA THIS MORNING. WINDS W OF TROUGH IN 15-20 KT RANGE WITH SEAS TO MAX OF 9 FT JUST N OF THE GULF OF HONDURAS. EXPECT W WINDS TO SPREAD E ACROSS THE NW CARIBBEAN TUE AND WED BEFORE SHIFTING TO N OVER ALL CARIBBEAN WATERS W OF 75W THU. WINDS BECOME E ACROSS ENTIRE CARIBBEAN LATE THU AND FRI WITH GRADIENT ALONG COAST OF COLOMBIA RETURNING TO THE NORMAL NE 20 KT. TRADES E OF THE CARIBBEAN AT 20 KT WITH LARGE E SWELLS MIXING WITH THE NLY SWELLS THROUGH MIDDLE OF THE WEEK WITH ANOTHER BLAST OF N SWELLS ARRIVING OVER WATERS NE VIRGIN ISLANDS FRI. ATLANTIC... AMZ080...MINIMAL GALE WARNING N OF 27N SPREADING S TO WATERS N OF 25N TUE. CARIBBEAN... NONE. GULF OF MEXICO... NONE. FORECASTER NELSON. TROPICAL PREDICTION CENTER.