830 
 WTNT24 KNHC 152041
 TCMAT4
 HURRICANE IVAN FORECAST/ADVISORY NUMBER  54
 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL092004
 2100Z WED SEP 15 2004
  
 A HURRICANE WARNING IS IN EFFECT FROM GRAND ISLE LOUISIANA TO
 APALACHICOLA FLORIDA...INCLUDING THE GREATER NEW ORLEANS AREA AND
 LAKE PONTCHARTRAIN.  A HURRICANE WARNING MEANS THAT HURRICANE
 CONDITIONS ARE EXPECTED WITHIN THE WARNING AREA...GENERALLY WITHIN
 THE NEXT 24 HOURS.  PREPARATIONS TO PROTECT LIFE AND PROPERTY
 SHOULD BE RUSHED TO COMPLETION THROUGHOUT THE ENTIRE WARNING AREA.
  
 A HURRICANE WATCH REMAINS IN EFFECT FROM MORGAN CITY LOUISIANA TO
 WEST OF GRAND ISLE.
  
 AT 4 PM CDT...2100Z...THE TROPICAL STORM WARNING IS DISCONTINUED
 WEST OF MORGAN CITY LOUISIANA.  A TROPICAL STORM WARNING REMAINS IN
 EFFECT FROM MORGAN CITY TO WEST OF GRAND ISLE...AND FROM EAST OF
 APALACHICOLA TO YANKEETOWN FLORIDA.
  
 HURRICANE CENTER LOCATED NEAR 28.4N  88.3W AT 15/2100Z
 POSITION ACCURATE WITHIN  15 NM
  
 PRESENT MOVEMENT TOWARD THE NORTH OR 355 DEGREES AT  12 KT
  
 ESTIMATED MINIMUM CENTRAL PRESSURE  933 MB
 EYE DIAMETER  30 NM
 MAX SUSTAINED WINDS 115 KT WITH GUSTS TO 140 KT.
 64 KT....... 90NE  90SE  75SW  75NW.
 50 KT.......125NE 100SE 100SW 100NW.
 34 KT.......225NE 250SE 125SW 150NW.
 12 FT SEAS..300NE 300SE 400SW 300NW.
 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 28.4N  88.3W AT 15/2100Z
 AT 15/1800Z CENTER WAS LOCATED NEAR 27.9N  88.2W
  
 FORECAST VALID 16/0600Z 30.2N  88.3W...ON THE COASTLINE
 MAX WIND 115 KT...GUSTS 140 KT.
 64 KT... 75NE  75SE  75SW  60NW.
 50 KT...125NE 100SE  90SW  75NW.
 34 KT...175NE 250SE 125SW 125NW.
  
 FORECAST VALID 16/1800Z 32.2N  88.0W...INLAND
 MAX WIND  65 KT...GUSTS  80 KT.
 64 KT... 40NE  40SE  40SW  40NW.
 50 KT... 60NE  60SE  60SW  60NW.
 34 KT...125NE 200SE 125SW 100NW.
  
 FORECAST VALID 17/0600Z 33.8N  87.2W...INLAND
 MAX WIND  35 KT...GUSTS  55 KT.
 34 KT...100NE 100SE 100SW 100NW.
  
 FORECAST VALID 17/1800Z 35.0N  86.0W...INLAND
 MAX WIND  25 KT...GUSTS  45 KT.
  
 FORECAST VALID 18/1800Z 36.0N  84.0W...INLAND
 MAX WIND  20 KT...GUSTS  35 KT.
  
 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 19/1800Z 36.0N  84.0W...DISSIPATING
 MAX WIND  20 KT...GUSTS  30 KT.
  
 OUTLOOK VALID 20/1800Z...DISSIPATED
  
 REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 28.4N  88.3W
  
 NEXT ADVISORY AT 16/0300Z
  
 FORECASTER FRANKLIN
  
  
 $$