000
AGXX40 KNHC 260729
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
345 AM EDT TUE JUN 26 2012

MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA
AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

GULF OF MEXICO...
TROPICAL STORM DEBBY REMAINS OVER THE NE CORNER OF THE GULF 
WATERS NEAR 29.2N 85.1W AT 26/0300 UTC WITH MAX SUSTAINED WINDS 
OF 40 KT WITH GUSTS TO 50 KT. LITTLE CHANGE IN STRENGTH IS 
EXPECTED UNTIL THE CENTER MOVES OVER LAND. THE STORM IS DRIFTING 
SLOWLY EASTWARD AND REMAINS TRAPPED IN A BLOCKING RIDGE PATTERN 
THAT EXTENDS ACROSS THE SOUTHEASTERN U.S. AND INTO THE EASTERN 
GULF OF MEXICO AND WESTERN ATLANTIC. DUE TO THE WEAK STEERING 
FLOW...DEBBY IS FORECAST TO REMAIN OVER THE NORTHEASTERN GULF OF 
MEXICO FOR AT LEAST THE NEXT 2 DAYS BEFORE IT MOVES SLOWLY 
ACROSS NORTH FLORIDA THU NIGHT AND FRI. BUOYS ACROSS THE EAST 
GULF ALONG WITH THE NWW3_OFCL WAVE FORECAST REVEAL THAT THE 12 
FT OR GREATER SEAS ASSOCIATED WITH THIS TROPICAL CYCLONE CAN BE 
FOUND WITHIN 240 NM SE OF THE STORM CENTER. A TROUGH IS MOVING 
IN TANDEM WITH THE STORM ACROSS THE EASTERN HALF OF THE GULF. 
THE STRONGEST WINDS OF 20-25 KT ARE NOTED PER SCATTEROMETER DATA 
E OF THE TROUGH AXIS THAT EXTENDS FROM 27N86W TO 22N90W. THE 
WESTERN HALF OF THE GULF REGION IS UNDER THE INFLUENCE OF A WEAK 
HIGH PRES LOCATED NEAR 25N96W. THIS SYSTEM IS PRODUCING MAINLY 
LIGHT WINDS. EXPECT DIMINISHING WINDS AND SUBSIDING SEAS FROM 
WEST TO EAST ACROSS THE GULF WATERS THROUGH THE FORECAST PERIOD 
AS DEBBY MOVES AWAY FROM THE REGION. 

SOUTHWEST NORTH ATLC S OF 31N W OF 65W...
A 1020 HIGH PRES CENTERED NEAR 27N60W EXTENDS A RIDGE ACROSS THE 
AREA PRODUCING LIGHT TO MODERATE WINDS E OF THE BAHAMAS. PRES 
GRADIENT BETWEEN T.S. DEBBY AND THE ATLC RIDGE IS RESULTING IN 
SE TO S WINDS 20 KT WITH ISOLATED SPOTS TO 25 KT ACROSS STRAITS 
OF FLORIDA...THE EAST FLORIDA COAST AND THE NW BAHAMAS. THIS 
WEATHER PATTERN IS FORECAST TO PERSIST OVER THE NEXT FEW DAYS. 
AFTER MOVING ACROSS NORTH FLORIDA...DEBBY IS FORECAST TO ENTER 
THE SW N ATLC FRI EVENING. SOME MODEST INCREASE IN INTENSITY IS 
EXPECTED AS IT MOVES OVER THE WARMER WATERS OF THE GULFSTREAM. 
THE OFFICIAL NHC INTENSITY FORECAST HAS DEBBY REGAINED MINIMAL 
TROPICAL STORM STATUS BY FRI EVENING.   

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. A TROPICAL WAVE IS OVER THE FAR EASTERN 
CARIBBEAN ALONG 62W WITH ISOLATED SHOWERS. THE WAVE WILL REACH 
THE CENTRAL CARIBBEAN WED AND WILL BE NEAR 75W THU.  

NOTE...GRIDDED MARINE OUTPUT IS AVAILABLE AT 
WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE (LOWER CASE)

GULF OF MEXICO...
.TROPICAL STORM WARNING GMZ15.

CARIBBEAN SEA...
.NONE.

SW N ATLANTIC...
.NONE.
    
FOR ADDITIONAL INFORMATION PLEASE VISIT
WWW.HURRICANES.GOV/MARINE

$$
FORECASTER GR