000 AGXX40 KNHC 191738 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 1245 PM EST MON JAN 19 2009 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO... CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO...A COLD FRONT OVER THE CENTRAL WATERS WILL MOVE S OF AREA AROUND SUNSET. A SERIES OF SECONDARY N SURGES NOTED TO THE NW OF FRONT WITH THE MOST SIGNIFICANT BOUNDARY OVER N LA ATTM...AND EXPECTED TO RACE SE INTO THE NW WATERS THIS AFTERNOON AND TRANSVERSE ENTIRE GULF TUE. CURRENTLY W WINDS 20-25 KT WITH A SWATH OF 30 KT EXPECTED BRIEFLY ACROSS THE CENTRAL WATERS THIS AFTERNOON AND TONIGHT WHICH SHOULD INCREASE SEAS TO MAX OF 13 FT BY EARLY TUE MORNING. EXPECT THAT THE ASSOCIATED N SWELLS SHOULD DRIVE COMBINED SEAS TO 12 FT INTO STRAITS OF FL LATE TUE. BY THEN WINDS BECOMING N TO W OF 90W SPREADING E ACROSS ALL WATERS BY MIDDAY WED. HIGH PRES CENTER IN WAKE OF FRONT WILL SHIFT SE INTO N-CENTRAL GULF WED NIGHT...THEN QUICKLY SHIFT E TO OVER N-CENTRAL FL THU NIGHT ALLOWING SLY FLOW TO SET UP ACROSS ENTIRE GULF BY SUNRISE FRI. SLY FLOW INCREASES TO 20 KT OVER W PART FRI WITH NEXT FRONT OVER TX COAST AROUND MIDDAY SAT. NOTE THAT THIS IS A FULL 12 HOURS LATER THAN GUIDANCE SUGGESTED YESTERDAY...AND SAT FRONT ALSO MUCH WEAKER AND EXPECT IT TO STALL OVER NW WATERS SAT NIGHT. ATLC AND CARIBBEAN...SITUATION REMAINS DYNAMIC. BROAD FRONTAL TROUGH EXTENDS ALONG 31N60W TO HAITI. EXPECT THESE REMNANTS TO FINALLY WASH OUT BY SUNRISE TOMORROW. BUT CENTRAL ATLC RIDGE STILL HAS S WINDS AT 20-25 KT E OF THIS TROUGH MAINLY BETWEEN 65W-55W. NEXT COLD CURRENTLY OVER NW ATLC WATERS WILL CONTINUE E WITH A SERIES OF N PULSES BEHIND THE FRONT. FOR SIMPLICITY WILL KEY ON THE MOST SIGNIFICANT SURGE WHICH WILL RACE OFF THE GA COAST LATE TONIGHT MERGING WITH THE FIRST FRONT INTO A SINGLE BOUNDARY EXTENDING FROM BERMUDA TO WINDWARD PASSAGE MIDDAY WED. GUIDANCE FLUCTUATING ON STRENGTH OF SLY FLOW AHEAD OF THESE FRONTS. INCREASED SW-W WINDS TO 25-40 KT ON THIS MORNING TEXT PACKAGE. SEAS EXPECTED TO BUILD TO 15-20 KT LATE TUE NIGHT AND WED OVER THE WATERS N OF 19N E OF 73W. W TO E RIDGE BUILDS OFF FL ALONG 28N LATE IN THE WEEK WITH A PAUSE IN THE FRONTS TILL PERHAPS LATE SUN. CARIBBEAN TROUGH STILL EVIDENT FROM HAITI TO PANAMA THIS MORNING. WINDS W OF TROUGH IN 15 KT RANGE WITH SEAS TO MAX OF 7 FT NEAR 13N80W. W WINDS ALREADY OVER AND TO S OF YUCATAN CHANNEL EXPECTED 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 NIGHT. ATLANTIC... AMZ080...GALE WARNING. CARIBBEAN... NONE. GULF OF MEXICO... NONE. FORECASTER NELSON. TROPICAL PREDICTION CENTER.