024 
 WTNT24 KNHC 120839
 TCMAT4
 HURRICANE IVAN FORECAST/ADVISORY NUMBER  40
 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL092004
 0900Z SUN SEP 12 2004
  
 A HURRICANE WARNING REMAINS IN EFFECT FOR THE CAYMAN ISLANDS.
  
 A HURRICANE WARNING REMAINS IN EFFECT FOR CUBA FROM PINAR DEL RIO TO
 CIEGO DE AVILA INCLUDING THE ISLE OF YOUTH.  A HURRICANE WARNING
 MEANS THAT HURRICANE CONDITIONS ARE EXPECTED WITHIN THE WARNING
 AREA WITHIN THE NEXT 24 HOURS.  PREPARATIONS TO PROTECT LIFE AND
 PROPERTY SHOULD BE RUSHED TO COMPLETION.
  
 A HURRICANE WATCH REMAINS IN EFFECT FOR THE REST OF CUBA. A
 HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
 WITHIN THE WATCH AREA...GENERALLY WITHIN 36 HOURS.
  
 A TROPICAL STORM WARNING REMAINS IN EFFECT FOR JAMAICA...BUT WILL
 LIKELY BE LOWERED LATER THIS MORNING.
  
 INTERESTS IN THE NORTHWESTERN CARIBBEAN SEA...AS WELL AS IN THE
 EASTERN GULF OF MEXICO...SHOULD CLOSELY MONITOR THE PROGRESS OF
 THIS EXTREMELY DANGEROUS HURRICANE.
  
 HURRICANE CENTER LOCATED NEAR 18.6N  80.8W AT 12/0900Z
 POSITION ACCURATE WITHIN  10 NM
  
 PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT   8 KT
  
 ESTIMATED MINIMUM CENTRAL PRESSURE  918 MB
 EYE DIAMETER  15 NM
 MAX SUSTAINED WINDS 135 KT WITH GUSTS TO 165 KT.
 64 KT....... 80NE  45SE  25SW  55NW.
 50 KT.......100NE  70SE  70SW  95NW.
 34 KT.......150NE 100SE 100SW 150NW.
 12 FT SEAS..360NE 180SE 180SW 200NW.
 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 18.6N  80.8W AT 12/0900Z
 AT 12/0600Z CENTER WAS LOCATED NEAR 18.4N  80.4W
  
 FORECAST VALID 12/1800Z 19.2N  81.8W
 MAX WIND 145 KT...GUSTS 175 KT.
 64 KT... 60NE  60SE  60SW  60NW.
 50 KT... 90NE  90SE  90SW  90NW.
 34 KT...150NE 100SE 100SW 150NW.
  
 FORECAST VALID 13/0600Z 20.6N  83.0W
 MAX WIND 145 KT...GUSTS 175 KT.
 64 KT... 60NE  60SE  60SW  60NW.
 50 KT... 90NE  90SE  90SW  90NW.
 34 KT...150NE 100SE 100SW 150NW.
  
 FORECAST VALID 13/1800Z 22.2N  84.1W...INLAND
 MAX WIND 140 KT...GUSTS 170 KT.
 64 KT... 60NE  60SE  60SW  60NW.
 50 KT... 90NE  90SE  90SW  90NW.
 34 KT...150NE 100SE 100SW 150NW.
  
 FORECAST VALID 14/0600Z 23.9N  84.8W...OVER WATER
 MAX WIND 125 KT...GUSTS 155 KT.
 50 KT... 90NE  90SE  90SW  90NW.
 34 KT...150NE 100SE 100SW 150NW.
  
 FORECAST VALID 15/0600Z 27.7N  85.6W...OVER WATER
 MAX WIND 110 KT...GUSTS 135 KT.
 50 KT... 90NE  90SE  50SW  50NW.
 34 KT...150NE 150SE 100SW 100NW.
  
 EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM
 ON DAY 4 AND 325 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY
  
 OUTLOOK VALID 16/0600Z 32.0N  85.3W...INLAND
 MAX WIND  60 KT...GUSTS  75 KT.
  
 OUTLOOK VALID 17/0600Z 36.5N  82.5W...INLAND
 MAX WIND  25 KT...GUSTS  35 KT.
  
 REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.6N  80.8W
  
 NEXT ADVISORY AT 12/1500Z
  
 FORECASTER LAWRENCE
  
  
 $$