006 
 WTNT24 KNHC 232030
 TCMAT4
 TROPICAL STORM IVAN FORECAST/ADVISORY NUMBER  71
 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL092004
 2100Z THU SEP 23 2004
 
 AT 4 PM CDT...2100Z...THE TROPICAL STORM WARNING HAS BEEN
 DISCONTINUED WEST OF SAN LUIS PASS TEXAS.
 
 A TROPICAL STORM WARNING IS NOW IN EFFECT FOR A PORTION OF THE
 GULF OF MEXICO COAST FROM MORGAN CITY LOUISIANA WESTWARD TO SAN
 LUIS PASS TEXAS.
  
 TROPICAL STORM CENTER LOCATED NEAR 29.4N  93.0W AT 23/2100Z
 POSITION ACCURATE WITHIN  20 NM
  
 PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT   7 KT
  
 ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB
 MAX SUSTAINED WINDS  40 KT WITH GUSTS TO  50 KT.
 34 KT....... 50NE  50SE  20SW  40NW.
 12 FT SEAS.. 90NE 150SE 100SW 100NW.
 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 29.4N  93.0W AT 23/2100Z
 AT 23/1800Z CENTER WAS LOCATED NEAR 29.2N  92.7W
  
 FORECAST VALID 24/0600Z 30.0N  94.1W...INLAND
 MAX WIND  35 KT...GUSTS  45 KT.
 34 KT... 20NE  50SE  20SW  20NW.
  
 FORECAST VALID 24/1800Z 30.4N  95.0W...INLAND
 MAX WIND  30 KT...GUSTS  40 KT.
  
 FORECAST VALID 25/0600Z 30.2N  95.7W...INLAND
 MAX WIND  25 KT...GUSTS  35 KT.
  
 FORECAST VALID 25/1800Z 29.6N  96.4W...DISSIPATING INLAND
 MAX WIND  20 KT...GUSTS  30 KT.
  
 FORECAST VALID 26/1800Z 28.8N  97.2W...REMNANT LOW INLAND
 MAX WIND  20 KT...GUSTS  25 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 27/1800Z...DISSIPATED INLAND
 
 REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 29.4N  93.0W
  
 NEXT ADVISORY AT 24/0300Z
  
 FORECASTER STEWART
  
  
 $$