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Hurricane GUSTAV


ZCZC MIATCDAT2 ALL
TTAA00 KNHC DDHHMM
HURRICANE GUSTAV SPECIAL DISCUSSION NUMBER  24
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL072008
200 PM EDT SAT AUG 30 2008
 
SO MUCH FOR A SLOWDOWN IN THE INTENSIFICATION RATE OF GUSTAV. 
YESTERDAY AT THIS TIME WE CONVEYED THAT RAPID INTENSIFICATION OVER
THE NORTHWESTERN CARIBBEAN WAS POSSIBLE...BUT THIS IS A LITTLE MORE
THAN WHAT WE HAD IN MIND IN SUCH A SHORT TIME.  THE HURRICANE HAS
REACHED CATEGORY FOUR STATUS WITH AN INTENSITY OF 125 KT...HAVING
BEEN A STRONG TROPICAL STORM JUST ABOUT 24 HOURS AGO.  THE MAXIMUM
SURFACE WIND VALUE IS BASED ON A FLIGHT-LEVEL WIND AT 700 MB OF 141
KT...SINCE THE 90 PERCENT ADJUSTMENT TO THE SURFACE USUALLY WORKS
RATHER WELL FOR INTENSIFYING MAJOR HURRICANES.  THE AIRCRAFT FIXES
INDICATE THAT A NORTHWESTWARD MOTION HAS RESUMED...AND THE INITIAL
MOTION ESTIMATE IS 315/12...RIGHT ALONG THE PREVIOUS ADVISORY
TRACK.  NO CHANGES TO THE 1500 UTC FORECAST TRACK HAVE BEEN
MADE...BUT THE INTENSITY FORECAST HAS BEEN ADJUSTED UPWARD THROUGH
96 HOURS.  GUSTAV COULD INTENSIFY SOME MORE DURING THE NEXT FEW
HOURS OVER WATER...AND ONE CANNOT RULE OUT CATEGORY FIVE INTENSITY
BEFORE CROSSING CUBA.  THE FORECAST NOW CALLS FOR A PEAK AT 140
KT...CATEGORY FIVE INTENSITY...OVER THE SOUTHERN GULF WHERE OCEAN
HEAT CONTENT WILL STILL BE HIGH...FOLLOWED BY A VERY GRADUAL
WEAKENING OVER THE NORTHERN GULF WHERE OCEAN HEAT CONTENT IS LESS.
 
 
FORECAST POSITIONS AND MAX WINDS
 
INITIAL      30/1800Z 21.6N  82.5W   125 KT
 12HR VT     31/0000Z 22.5N  83.5W   135 KT...OVER WESTERN CUBA
 24HR VT     31/1200Z 24.3N  85.4W   140 KT
 36HR VT     01/0000Z 26.0N  87.3W   135 KT
 48HR VT     01/1200Z 27.8N  89.2W   125 KT
 72HR VT     02/1200Z 30.5N  92.5W    80 KT...INLAND
 96HR VT     03/1200Z 31.5N  94.0W    50 KT...INLAND
120HR VT     04/1200Z 32.0N  95.5W    30 KT...INLAND
 
$$
FORECASTER KNABB
 
NNNN


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Page last modified: Tuesday, 21-Apr-2009 12:09:14 UTC