000
AGXX40 KNHC 221814
MIMATS

MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
215 PM EDT MON AUG 22 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...
RIDGE MEANDERING OVER THE N WATERS WITH INTERMITTENT HIGH 
CENTERS APPEARING ALONG AXIS OVER NW WATERS. A WEAK SURFACE 
FRONT EXPECTED TO STALL OVER THE EXTREME NE WATERS TUE. VARIABLE 
5-10 KT WINDS...SEAS 2 FT OR LESS...N OF 28N THROUGH WED. HURCN 
IRENE PULLING N OF THE CARIBBEAN AND ITS LIMITING LAND 
EFFECTS...AND FORECAST TO WIND UP...BUT ITS CENTER PASSING E OF 
FL RESULTING IN NO TS WARNING FOR E GULF. NOTE THAT SMALL TRACK 
FLUCTUATIONS...OR AN INCREASE IN RADIUS TS FORCE OVER ITS W 
SEMICIRCLE...COULD RESULT IN RE-POSTING TS WARNING FOR FL 
STRAITS. STILL EXPECT TIGHTENING GRADIENT TO RESULT IN BACKING 
15-25 KT WINDS FROM NE-N-NW WED THROUGH FRI...THEN BACKING W-SW 
FRI NIGHT INTO SAT WITH THESE CONDITIONS AFFECTING GULF WATERS E 
OF 87W.
   
SW ATLC S OF 31N W OF 55W...CARIBBEAN SEA AND TROPICAL N ATLC S 
OF 22N W OF 55W...

HURCN IRENE PULLING N AWAY FROM PUERTO RICO. NEW NHC GUIDANCE 
INTENSIFIES IRENE AND TRACKS CENTER E OF FL COAST TO SC COAST 
SAT MORNING. EXPANDED WIND RADII AND INCREASED SEAS IN TEXT AND 
GRAPHICAL PACKAGES AND SIMPLIFIED WARNING HEADLINES. TS WARNING 
FOR CARIBBEAN N OF 18N BETWEEN 60W-70W WILL EXPIRE LATE 
TONIGHT.    LATEST TS RADII REMAINS JUST N OF WINDWARD PASSAGE 
TUE NIGHT. BY MID WEEK ENTIRE SW ATLC ZONE IS AT LEAST 20 KT 
WITH SEAS GREATER THAN 8 FT OVER ALL ATLC WATERS W OF 68W. 
SOUTHERLY WINDS TO 20 KT WILL DIMINISH TROPICAL WATERS N OF 
VIRGIN ISLANDS TUE...BUT WILL PERSIST OVER N-CENTRAL CARIBBEAN 
THROUGH THU NIGHT. REFER TO WTNT24 KNHC/MIATCMAT4 FOR LATEST 
INFORMATION ON IRENE. 
  
WARNINGS...

GULF OF MEXICO...
.NONE.

CARIBBEAN AND TROPICAL N ATLC...
.AMZ086...TS WRNG N OF 18N BETWEEN 65W-70W THROUGH TONIGHT.

SW N ATLC...
.AMZ080...HURCN WRNG S OF 23N E OF 75W.
          
          INFO...TS AND HURCN CONDS EXPECTED W OF 69W TUE NIGHT 
          THRU FRI.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORECASTER NELSON