000 AGXX40 KNHC 261811 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 200 PM EST SAT DEC 26 2009 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W GULF OF MEXICO... LOW PRES 1012 MB AND TROUGH EXPECTED TO DEVELOP IN W GULF JUST OFFSHORE OF TEXAS/NE MEXICO LATE THIS AFTERNOON AND TONIGHT THEN DRIFT NE WITH LOW PRES CENTER NEAR 25N87W AND TROUGH EXTENDING TO 24N89W TO 22N88W EARLY MON CARRYING FRESH TO STRONG N WINDS W OF BOUNDARY. LOW PRES WEAKENS WITH REMNANT TROUGH AXIS MOVING E OF GULF LATE MON AS HEALTHY HIGH PRES CENTER 1022 MB BUILDS OVER INTERIOR TEXAS AND RIDGES INTO GULF. MODEL GUIDANCE DEVELOP SECOND SURFACE OVER W GULF TUE...STRENGTHENS IT AND MOVE IT NE TUE NIGHT AND WED TO NE GULF COAST. CARIBBEAN AND TROPICAL N ATLC W OF 55W... WEAK COLD FRONT IN NW CARIBBEAN FROM 22N82W TO 22N85W EXPECTED TO DISSIPATE TONIGHT. REMNANTS OF COLD FRONT IN TROPICAL N ATLC ALONG 19N WITH FRESH TO STRONG NE-E TRADES. HIGH PRES JUST N OF 31N MAINTAINS GENTLE TO FRESH COOL NE-E TRADES ACROSS BASIN EXPECTED INCREASE TUE AND WED AS RIDGE MOVES FURTHER S TIGHTENING PRES GRADIENT WITH LOW PRES CENTER 1010 MB OVER COLOMBIA. LARGE LONG PERIOD N SWELLS AFFECTING TROPICAL ATLC SEEPING THROUGH INTER-ISLAND PASSAGES SPREADING SW INTO E HALF OF BASIN. SW N ATLC S OF 31N W OF 55W... COLD FRONT OFF FLORIDA E COAST FROM 31N75W TO 23N80W PROMPTS STRONG SW BREEZE AHEAD AND NORTHWESTERLIES BEHIND FRONTAL BOUNDARY. BUILDING RIDGE BEHIND FRONT SQUEEZES PRES GRADIENT INCREASING FLOW OF FRESH EASTERLIES S OF 23N E OF BAHAMAS. SECOND BURST OF COLDER AIR ENTERS WARM ATLC WATERS BEHIND TROUGH WITH N WINDS INCREASING TO 20-25 KT N OF 25N WED. LARGE LONG PERIOD SWELLS NE SWELLS HAVE SPREAD THROUGHOUT ENTIRE BASIN AND LIKELY REMAIN THROUGH FORECAST PERIOD. WARNINGS... ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER WALLY BARNES