000 AGXX40 KNHC 060705 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 205 AM EST WED JAN 6 2010 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W GULF OF MEXICO... WITH HIGH PRESSURE BUILDING ACROSS THE SE US...LATEST BUOY AND ASCAT DATA INDICATES WINDS HAVE DIMINISHED TO MODERATE TO FRESH ACROSS THE WESTERN GULF WITH FRESH WINDS ACROSS THE EASTERN GULF. WITH THE DECREASE IN WINDS ACROSS THE GULF...SEAS OVER THE SOUTHERN GULF HAVE SUBSIDED TO 6 TO 7 FT AS REPORTED BY BUOY 42055. WINDS WILL FURTHER DIMINISH ACROSS THE EASTERN GULF TODAY...WHILE SE RETURN FLOW INCREASES ACROSS THE WESTERN GULF...INCREASING TO 20 TO 25 KT LATE TONIGHT. A COLD FRONT WILL SHIFT INTO THE NW GULF BY EARLY THU. STRONG NORTHERLY FLOW WILL FOLLOW THE FRONT...WITH GALE FORCE WINDS EXPECTED OVER WESTERN GULF OF MEXICO BY LATE THU...AND PERSISTING OVER THE FAR SW GULF OF MEXICO MAINLY S OF VERACRUZ INTO SAT. THE FRONT WILL SHIFT THROUGH THE GULF BY LATE FRI/EARLY SAT LEAVING FRESH TO STRONG NORTHERLY FLOW IN ITS WAKE ACROSS THE EASTERN GULF...AND STRONG TO NEAR GALE CONDITIONS ACROSS THE WESTERN GULF SAT. WINDS WILL START TO DIMINISH SUN AS HIGH PRES BUILDS FROM TEXAS INTO THE LOWER MISSISSIPPI VALLEY. SEAS WILL REMAIN 8 TO 13 FT WITH N SWELL MAINLY OVER THE SOUTHERN GULF THROUGH SUN. CARIBBEAN AND TROPICAL N ATLC W OF 55W... A SHEAR LINE REMAINS ACROSS THE CARIBBEAN FROM SW HAITI TO COSTA RICA. LATEST ASCAT AND BUOY OBSERVATIONS INDICATE FRESH TO STRONG WINDS PREVAIL ACROSS THE CARIBBEAN W OF THE SHEAR LINE. WITH A WEAK PRESSURE GRADIENT ACROSS THE REMAINDER OF THE CARIBBEAN...MODERATE TO FRESH TRADEWIND FLOW PREVAILS. HIGH PRESSURE WILL BUILD ACROSS THE SW N ATLANTIC THROUGH FRI WHICH WILL BRING AN INCREASE IN TRADEWINDS ACROSS THE CENTRAL AND EASTERN PART OF THE BASIN...WHILE DIMINISHING ACROSS THE NW CARIBBEAN. SEAS BUILD TO AS HIGH AS 12 FT BY FRI OFF THE COLOMBIAN COAST DUE TO THE STRONG WINDS AND EAST SWELL. A COLD FRONT WILL PUSH INTO THE YUCATAN CHANNEL ON SAT. THE FRONT WILL REACH FROM SE CUBA TO WESTERN HONDURAS SAT NIGHT...AND SW HAITI TO COSTA RICA BY LATE SUN NIGHT. STRONG TO NEAR GALE CONDITIONS WILL FOLLOW THE COLD FRONT. A FRONTAL BOUNDARY WILL SHIFT INTO THE FAR NW PART OF THE TROPICAL ATLANTIC WATERS AND STALL OVER THE FAR N PORTION OF THE AREA THU. NORTHERLY SWELLS WILL PREVAIL OVER THE TROPICAL N ATLANTIC...MIXING WITH NE SWELL S OF 15N. SW N ATLC S OF 31N W OF 55W... A COLD FRONT EXTENDS FROM 31N62W TO E CUBA. LATEST ASCAT PASS INDICATES STRONG TO NEAR GALE WINDS W OF THE FRONT. BUOYS INDICATE NW SWELL OF 8 TO 13 FT IN THE WAKE OF THE FRONT. HIGH PRESSURE WILL BUILD ACROSS THE AREA BEHIND THE FRONT WHICH WILL DECREASE THE WINDS THROUGH THU NIGHT. WINDS WILL INCREASE ACROSS THE NW PART OF THE AREA THU NIGHT AHEAD OF THE NEXT COLD FRONT EXPECTED TO SHIFT OFF THE SE COAST EARLY FRI MORNING. THE FRONT WILL REACH 31N71W TO THE FLORIDA KEYS FRI NIGHT AND 31N63W TO CENTRAL CUBA SAT. ANOTHER ROUND OF COLD AIR WILL PUSH OFF THE SOUTHEAST U.S. COAST BY LATE SAT REINFORCING THE FRONT. GALE FORCE WINDS ARE POSSIBLE E OF THE COLD FRONT N OF 29N FRI. THERE WILL ALSO BE THE POTENTIAL FOR GALE FORCE WINDS ON SUN IN THE WATERS BETWEEN N FLORIDA AND BERMUDA...MAINLY DUE TO THE COLD AIR ADVECTION ASSOCIATED WITH THE NW WINDS BEHIND THE FRONT. WARNINGS... ATLC... .GALE CONDITIONS N OF 27N BETWEEN 55W AND 65W TONIGHT. CARIBBEAN... .NONE. GULF OF MEXICO... .GALE CONDITIONS EXPECTED GMZ080-082 THU AND GMZ08W S OF 21N W OF 95W FRI AND SAT. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER AL