000 AGXX40 KNHC 270737 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 345 AM EDT WED JUN 27 2012 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... THE CENTER OF DEBBY MADE LANDFALL IN THE FLORIDA BIG BEND REGION AT AROUND 26/2100 UTC. WINDS OF 20 TO 25 KT ARE STILL NOTED OVER THE FAR EASTERN GULF...MAINLY E OF 85W...ASSOCIATED WITH THE ELONGATED CIRCULATION OF DEBBY CENTERED OVER NORTHERN FLORIDA NEAR 29.5N 81.5W AT 27/0600 UTC AS A TROPICAL DEPRESSION. LIGHT WINDS DOMINATE THE WESTERN HALF OF THE GULF REGION UNDER THE INFLUENCE OF A WEAK PRES PATTERN. EXPECT DIMINISHING WINDS AND SUBSIDING SEAS FROM W TO E ACROSS THE GULF WATERS THROUGH THE FORECAST PERIOD AS DEBBY MOVES AWAY FROM THE AREA. LIGHT TO MODERATE WINDS WILL PREVAIL ACROSS THE GULF THU AND FRI WITH SEAS OF 1-3 FT. SOUTHWEST NORTH ATLC S OF 31N W OF 65W... DEBBY IS CURRENTLY A TROPICAL DEPRESSION MOVING ACROSS NORTHERN FLORIDA WITH MAX SUSTAINED WINDS OF 30 KT GUSTS TO 40 KT. LITTLE CHANGE IN STRENGTH IS EXPECTED WHILE THE CENTER CROSSES THE SUNSHINE STATE. DEBBY IS FORECAST TO EMERGE OFF N FLORIDA ATLC COASTAL WATERS LATE THIS AFTERNOON. GLOBAL MODELS MOVE IT EAST-NORTHEASTWARD INTO THE ATLANTIC AT VARYING SPEEDS. A RIDGE ALONG 25N-26N DOMINATES THE AREA TONIGHT. THE RIDGE WILL WEAKEN AS DEBBY MOVES OFF N FLORIDA ATLC COASTAL WATERS LATE THIS AFTERNOON. PRES GRADIENT BETWEEN THE RIDGE AND DEBBY IS RESULTING IN AN AREA OF SLY WINDS OF 20 TO 25 KT MAINLY WEST OF 75W. SE WINDS OF 20 KT ARE ALSO NOTED JUST E OF THE SOUTHERN BAHAMAS. SCATTEROMETER DATA CONFIRMED THE PRESENCE OF THESE WIND SPEEDS. DEBBY IS FORECAST TO REACH NEAR 29.7N 80.0W THIS EVENING...NEAR 30.3N 77.8W THU MORNING AND NEAR 30.7N 75.6W THU EVENING...THEN BEGIN TO ACCELERATE TO THE NE LATE THU AND FRI AS IT RE-STRENGTHENS TO TROPICAL STORM. THEN...HIGH PRES WILL BUILD SW THROUGH THE STRAITS OF FLORIDA THU AND FRI AS DEBBY MOVES NE ACROSS N PORTIONS OF THE LOCAL WATERS. CARIBBEAN SEA AND TROPICAL N ATLC W OF 55W... MODERATE TO FRESH E TO SE TRADES WILL PREVAIL ACROSS MUCH OF THE CARIBBEAN...WITH OCCASIONALLY HIGHER WINDS ALONG THE N COAST OF SOUTH AMERICA THROUGH THU AS MODERATE HIGH PRES RIDGE REMAINS ACROSS W ATLC ALONG 25N-26N. A TROPICAL WAVE WITH AXIS ALONG 70W TONIGHT WILL REACH 75W THIS EVENING...ENTERING THE WESTERN CARIBBEAN THU EVENING AND REACHING THE COAST OF THE YUCATAN PENINSULA FRI EVE. A SECOND TROPICAL WAVE OVER THE CENTRAL ATLC NEAR 37W HAS AN ASSOCIATED WEAK LOW OF 1013 MB NEAR 9N37W. THIS SYSTEM IS PRODUCING DISORGANIZED SHOWERS AND THUNDERSTORMS...AND ANY DEVELOPMENT OF IT SHOULD BE SLOW TO OCCUR AS IT MOVES WESTWARD AT 10 TO 15 MPH. THIS SYSTEM HAS A LOW CHANCE OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. NOTE...GRIDDED MARINE OUTPUT IS AVAILABLE AT WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE (LOWER CASE) GULF OF MEXICO... .NONE. CARIBBEAN SEA... .NONE. SW N ATLANTIC... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT WWW.HURRICANES.GOV/MARINE $$ FORECASTER GR