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 912 
 WTNT24 KNHC 260253
 TCMAT4
  
 HURRICANE IRENE FORECAST/ADVISORY NUMBER  23
 NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092011
 0300 UTC FRI AUG 26 2011
  
 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
  
 THE GOVERNMENT OF THE BAHAMAS HAS DISCONTINUED THE HURRICANE WARNING
 FOR THE NORTHWESTERN BAHAMAS EXCEPT FOR GRAND BAHAMA AND THE ABACO
 ISLANDS.
  
 SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
  
 A HURRICANE WARNING IS IN EFFECT FOR...
 * THE GRAND BAHAMA AND THE ABACO ISLANDS
 * THE COAST OF NORTH CAROLINA FROM LITTLE RIVER INLET NORTHWARD TO
 THE VIRGINIA BORDER...INCLUDING THE PAMLICO...ALBEMARLE...AND
 CURRITUCK SOUNDS
  
 A HURRICANE WATCH IS IN EFFECT FOR...
 * THE VIRGINIA/NORTH CAROLINA BORDER NORTHWARD TO SANDY HOOK NEW
 JERSEY...INCLUDING DELAWARE BAY...AND CHESAPEAKE BAY SOUTH OF SMITH
 POINT
  
 A TROPICAL STORM WARNING IS IN EFFECT FOR...
 * NORTH OF EDISTO BEACH SOUTH CAROLINA TO LITTLE RIVER INLET
  
 A TROPICAL STORM WATCH IS IN EFFECT FOR...
 * CHESAPEAKE BAY FROM SMITH POINT NORTHWARD AND THE TIDAL POTOMAC
  
 A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
 SOMEWHERE WITHIN THE WARNING AREA.  A WARNING IS TYPICALLY ISSUED
 36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF
 TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE
 PREPARATIONS DIFFICULT OR DANGEROUS. PREPARATIONS TO PROTECT LIFE
 AND PROPERTY SHOULD BE RUSHED TO COMPLETION.
  
 A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
 EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.
  
 A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
 WITHIN THE WATCH AREA.  A WATCH IS TYPICALLY ISSUED 48 HOURS
 BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE
 WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR
 DANGEROUS.
  
 A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
 POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.
  
 INTERESTS ELSEWHERE IN THE MID-ATLANTIC STATES AND NEW ENGLAND
 SHOULD MONITOR THE PROGRESS OF IRENE.
  
 HURRICANE CENTER LOCATED NEAR 28.3N  77.3W AT 26/0300Z
 POSITION ACCURATE WITHIN  15 NM
  
 PRESENT MOVEMENT TOWARD THE NORTH OR 350 DEGREES AT  12 KT
  
 ESTIMATED MINIMUM CENTRAL PRESSURE  942 MB
 EYE DIAMETER  25 NM
 MAX SUSTAINED WINDS 100 KT WITH GUSTS TO 120 KT.
 64 KT....... 70NE  60SE  25SW  50NW.
 50 KT.......110NE 100SE  50SW  75NW.
 34 KT.......250NE 200SE 125SW 160NW.
 12 FT SEAS..330NE 300SE 120SW 270NW.
 WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
 MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
  
 REPEAT...CENTER LOCATED NEAR 28.3N  77.3W AT 26/0300Z
 AT 26/0000Z CENTER WAS LOCATED NEAR 27.7N  77.4W
  
 FORECAST VALID 26/1200Z 30.0N  77.8W
 MAX WIND 105 KT...GUSTS 130 KT.
 64 KT... 70NE  60SE  25SW  50NW.
 50 KT...110NE 100SE  50SW  75NW.
 34 KT...250NE 200SE 125SW 160NW.
  
 FORECAST VALID 27/0000Z 31.8N  77.6W
 MAX WIND 110 KT...GUSTS 135 KT.
 64 KT... 70NE  60SE  25SW  50NW.
 50 KT...110NE 100SE  50SW  75NW.
 34 KT...250NE 200SE 125SW 160NW.
  
 FORECAST VALID 27/1200Z 33.7N  77.1W
 MAX WIND 105 KT...GUSTS 130 KT.
 64 KT... 70NE  60SE  25SW  50NW.
 50 KT...110NE 100SE  50SW  75NW.
 34 KT...250NE 200SE 125SW 160NW.
  
 FORECAST VALID 28/0000Z 36.0N  76.3W
 MAX WIND  90 KT...GUSTS 110 KT.
 50 KT...120NE 120SE  60SW  75NW.
 34 KT...270NE 240SE 140SW 120NW.
  
 FORECAST VALID 29/0000Z 42.0N  73.0W...INLAND
 MAX WIND  70 KT...GUSTS  85 KT.
 50 KT...120NE 120SE  60SW  75NW.
 34 KT...270NE 270SE 140SW 120NW.
  
 EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 175 NM
 ON DAY 4 AND 225 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY
  
 OUTLOOK VALID 30/0000Z 51.0N  66.0W...POST-TROP/EXTRATROP
 MAX WIND  40 KT...GUSTS  50 KT.
  
 OUTLOOK VALID 31/0000Z 58.0N  50.0W...POST-TROP/EXTRATROP
 MAX WIND  40 KT...GUSTS  50 KT.
  
 REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 28.3N  77.3W
  
 NEXT ADVISORY AT 26/0900Z
  
 $$
 FORECASTER AVILA
  
  
 
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