000
AGXX40 KNHC 060618
MIMATS

MARINE WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
130 AM EST TUE DEC 06 2011

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

GULF OF MEXICO...
A COLD FRONT OVER THE WESTERN GULF OF MEXICO EXTENDING FROM THE 
SE LOUISIANA COAST TO VERACRUZ MEXICO HAS SLOWED ITS EASTWARD 
PROGRESS. MOST RECENT ASCAT PASS INDICATES 20 KT NW WINDS BEHIND 
THE FRONT. HIGH PRESSURE OVER THE CENTRAL UNITED STATES WILL 
SHIFT SOUTHWARD OVER THE NEXT DAY...AND PROVIDE A REINFORCING 
PUSH TO THE COLD FRONT WHICH WILL THEN INCREASE ITS EASTWARD 
MOVEMENT. THE FRONT WILL EXTEND FROM FLORIDA PANHANDLE TO E BAY 
OF CAMPECHE WED MORNING...AND MOVE SE OF THE AREA LATE WED/EARLY 
THU. THE REINFORCING PUSH WILL BRING NEAR GALE WINDS BEHIND THE 
FRONT IN THE SW GULF OF MEXICO WED...WITH THE CHANCE FOR A BRIEF 
PERIOD OF GALE FORCE WINDS. WINDS WILL DIMINISH THU AND FRI AS 
THE FRONT EXITS THE GULF WATERS. HIGH PRESSURE WILL BUILD N OF 
THE AREA THROUGH SAT...AND FRESHEN WINDS OVER THE GULF SAT. 

CARIBBEAN SEA AND TROPICAL N ATLC...
THE PRESSURE GRADIENT BETWEEN WEAK RIDGING OVER THE FAR E GULF 
OF MEXICO AND LOW PRESSURE ASSOCIATED WITH THE MONSOON TROUGH IS 
MAINTAINING FRESH 20 KT WINDS OVER THE NW CARIBBEAN. THE RIDGE 
WILL CONTINUE TO GRADUALLY WEAKEN OVER THE NEXT COUPLE OF 
DAYS...AND WINDS WILL DIMINISH BELOW 20 KT BY MIDWEEK. THE COLD 
FRONT CURRENTLY OVER THE GULF OF MEXICO WILL ENTER THE FAR W 
CARIBBEAN LATE WED/EARLY THU WITH A FRESHENING OF NLY WINDS 
BEHIND THE FRONT. THE FRONT WILL STALL AND DIMINISH OVER THE W 
CARIBBEAN THROUGH THU NIGHT. 

SOUTHWEST NORTH ATLC S OF 31N W OF 55W...
HIGH PRES N OF THE AREA HAS WEAKENED SINCE LAST NIGHT...TO 1031 
MB...AND THE SURFACE TROUGH JUST E OF THE SW N ATLC WATERS HAS 
CONTINUED TO WEAKEN. THIS HAS WEAKENED THE PRESSURE 
GRADIENT...AND THE GALE FORCE WINDS HAVE DIMINISHED...WITH THE 
LATEST ASCAT 0142 UTC ASCAT PASS INDICATING WINDS TO 25 KT.  
WINDS WILL CONTINUE TO DIMINISH FURTHER THROUGH THE WEEK AS THE 
HIGH PRESSURE CENTER CONTINUES TO WEAKEN...AND THE TROUGH 
DISSIPATES. SEAS WILL ALSO SLOWLY SUBSIDE...TO BELOW 10 FT BY 
THU. FRESH SOUTHERLY FLOW WILL INCREASE OVER THE NW PART OF THE 
AREA WED AHEAD OF THE NEXT COLD FRONT EXPECTED TO MOVE OFF THE 
SE UNITED STATES COAST LATE WED. THE FRONT WILL EXTEND FROM 
31N73W TO CENTRAL CUBA THU MORNING...THEN FROM 30N70W TO CENTRAL 
CUBA THU NIGHT WHERE IT WILL STALL AND GRADUALLY WEAKEN THROUGH 
FRI.  

WARNINGS...

GULF OF MEXICO...
.NONE. 

.CARIBBEAN SEA AND TROPICAL N ATLC...
.NONE.

.SW N ATLC...
.NONE.
    
FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORECASTER AL