000
AGXX40 KNHC 240709
MIMATS

MARINE WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
310 AM EDT TUE JUL 24 2012

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

GULF OF MEXICO...
WESTERN EXTENSION OF ATLC SUBTROPICAL RIDGE IS BROKEN BY A WEAK 
SURFACE TROUGH EXTENDING FROM TALLAHASSEE TO NEAR 26N87W. THE 
SURFACE RIDGE WILL SHIFT SOUTH TODAY AND BUILD WWD THROUGH SAT. 
LIGHT TO MODERATE E-SE WINDS WILL PREVAIL OVER THE REGION...WITH 
WINDS BECOMING LIGHT AND VARIABLE OVER THE NORTH-CENTRAL AND 
EASTERN GULF WED THROUGH SAT UNDER WEAK HIGH PRES. SEAS WILL BE 
GENERALLY 3 FT OR LESS EXCEPT FOR A FEW AREAS OF 3-4 FT SEAS IN 
SOUTHERN AND WESTERN PORTIONS OF THE GULF. NORTHERN PORTION OF 
TROPICAL WAVE ALONG 74W WILL REACH THE BAY OF CAMPECHE THU AND 
FRI WITH AN INCREASE IN NE TO E WINDS.  

SW N ATLC S OF 31N W OF 65W...
HIGH PRES RIDGE ALONG 28N WILL SHIFT SOUTHWARD THROUGH THU AS A 
COLD FRONT ASSOCIATED WITH A MID-LATITUDE TROUGH MOVING OFF THE 
EAST COAST SKIRTS THE FAR NE CORNER OF ZONES AMZ113 AND AMZ115. 
W-SW WINDS WILL INCREASE TO 20 TO 25 KT IN BOTH ZONES WED AS THE 
FRONT APPROACHES. A BLEND OF THE GFS/ECMWF MODELS WAS USED FOR 
TIMING OF THE FRONT. IF THE FRONT DROPS FURTHER S INTO THE AREA 
WINDS WILL SHIFT FROM W-SW TO NW N OF 30N...BUT WILL BE LIGHTER 
AS THE MAIN ENERGY ASSOCIATED WITH THE FRONT SWEEPS TO THE NE. 
MODERATE TO FRESH TRADE WINDS WILL CONTINUE S OF 23N THROUGH SAT.

CARIBBEAN SEA AND TROPICAL N ATLC W OF 55W...
HIGH PRES RIDGE N OF THE AREA WILL CONTINUE TO PRODUCE FRESH TO 
STRONG E-NE WINDS ACROSS MOST OF THE AREA BETWEEN 68-82W THROUGH 
WED. A TROPICAL WAVE IN THE THE CENTRAL CARIBBEAN ALONG 74W WILL 
MOVE W THROUGH THE WESTERN CARIBBEAN THROUGH LATE WED THEN MOVE 
W OF THE AREA INTO THE YUCATAN PENINSULA THU. ANOTHER TROPICAL 
WAVE IN THE EASTERN CARIBBEAN NEAR 65W WILL MOVE THROUGH THE 
CENTRAL CARIBBEAN WED-THU...AND THE WESTERN CARIBBEAN FRI-SAT.

NOTE...GRIDDED MARINE FORECAST IS AVAILABLE AT 
WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE

GULF OF MEXICO...
.NONE.

CARIBBEAN SEA...
.NONE.

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

$$
FORECASTER MUNDELL