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Hurricane IKE


ZCZC MIATCDAT4 ALL
TTAA00 KNHC DDHHMM
HURRICANE IKE DISCUSSION NUMBER  26
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL092008
1100 AM EDT SUN SEP 07 2008
 
SATELLITE IMAGERY INDICATES THAT IKE HAS CHANGED LITTLE DURING THE
LAST 6 HOURS.  THE LAST PRESSURE REPORTED BY AN AIR FORCE
RECONNAISSANCE AIRCRAFT WAS 949 MB AT 1100 UTC WHICH WAS VERY
SIMILAR TO PREVIOUS FIXES.  THE INITIAL INTENSITY IS HELD AT 115
KT.  A RECENT SSMI OVERPASS INDICATES THAT AN OUTER RAINBAND COULD
BE FORMING AN OUTER EYEWALL.  HOWEVER... EYEWALL REPLACEMENT
CYCLES...INCLUDING THEIR IMPACTS ON INTENSITY...ARE VERY DIFFICULT
TO ANTICIPATE.  SOME FLUCTUATIONS...EITHER UP OR DOWN...IN
INTENSITY IS POSSIBLE TODAY BEFORE THE CENTER REACHES EASTERN CUBA
TONIGHT.  ONCE INLAND...WEAKENING IS EXPECTED BUT THE DEGREE OF
WEAKENING DEPENDS ON HOW LONG THE CENTER REMAINS INLAND.  THE
LATEST OFFICIAL FORECAST KEEPS IKE INLAND FOR APPROXIMATELY 36
HOURS SO SIGNIFICANT WEAKENING IS SHOWN.  HOWEVER...ONLY A SMALL
DEVIATION FROM THE FORECAST TRACK COULD RESULT IN THE CENTER OF IKE
MOVING BACK OVER WATER SOONER.  IKE IS FORECAST TO REACH THE
SOUTHEASTERN GULF OF MEXICO IN ABOUT 2 DAYS.  SINCE THE WATERS OVER
THE GULF ARE WARM AND THE SHEAR IS NOT FORECAST TO BE HIGH...
RESTRENGTHENING IS FORECAST.
 
IKE IS BEING STEERED BY A MID-LEVEL RIDGE EXTENDING FROM THE WESTERN
ATLANTIC SOUTHWESTWARD OVER FLORIDA INTO THE GULF OF MEXICO WITH AN
INITIAL MOTION ESTIMATE OF 265/13.  IKE SHOULD MOVE GENERALLY
WESTWARD FOR THE NEXT 12 HOURS OR SO...FOLLOWED BY A TURN TOWARDS
THE WEST-NORTHWEST.  IN 2-3 DAYS...A SHORTWAVE TROUGH WILL MOVE
THROUGH THE EASTERN UNITED STATES CAUSING SOME WEAKENING OF THE
RIDGE AND A REDUCTION IKE'S FORWARD SPEED.  MOST OF THE DYNAMICAL
MODELS FORECAST THE TROUGH TO BYPASS THE CYCLONE RESULTING IN A
CONTINUED WEST-NORTHWESTWARD MOTION.  ONLY THE HWRF MODEL SHOWS
ENOUGH OF A WEAKNESS MATERIALIZING TO TURN IKE NORTH-NORTHWESTWARD.
WHILE THIS SOLUTION IS POSSIBLE...THE OFFICIAL FORECAST LEANS MORE
TOWARD THE REMAINING DYNAMICAL MODELS AND IS NEAR OR JUST NORTH OF
THE MODEL CONSENSUS.  IT IS MUCH TOO EARLY TO ANTICIPATE WHICH
AREAS ALONG THE GULF COAST COULD BE IMPACTED BY THIS SYSTEM.
 
SYNOPTIC SURVEILLANCE MISSIONS ARE CURRENTLY BEING FLOWN BY THE NOAA
G-IV...AND THIS DATA...ALONG WITH SPECIAL SOUNDINGS FROM NATIONAL
WEATHER SERVICE OFFICES...ARE PROVIDING ENHANCED DATA INTO THE
DYNAMICAL MODELS.
 
 
 
FORECAST POSITIONS AND MAX WINDS
 
INITIAL      07/1500Z 21.0N  73.4W   115 KT
 12HR VT     08/0000Z 20.9N  75.2W   120 KT
 24HR VT     08/1200Z 21.4N  77.6W    85 KT...INLAND
 36HR VT     09/0000Z 22.2N  79.9W    70 KT...INLAND
 48HR VT     09/1200Z 23.0N  81.8W    65 KT...INLAND
 72HR VT     10/1200Z 24.5N  85.0W    70 KT
 96HR VT     11/1200Z 26.0N  87.5W    85 KT
120HR VT     12/1200Z 27.0N  90.5W   100 KT
 
$$
FORECASTER RHOME
 
NNNN


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Page last modified: Tuesday, 21-Apr-2009 12:09:20 UTC