BULLETIN
HURRICANE JEANNE ADVISORY NUMBER 36
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
11 AM EDT WED SEP 22 2004
...JEANNE STRENGTHENS WELL TO THE EAST OF THE BAHAMAS...
...EXPECTED TO TURN WESTWARD BY THURSDAY...
AT 11 AM EDT...1500Z...THE CENTER OF HURRICANE JEANNE WAS LOCATED
NEAR LATITUDE 26.3 NORTH...LONGITUDE 68.5 WEST OR ABOUT 530 MILES
...855 KM...EAST OF GREAT ABACO ISLAND.
JEANNE IS MOVING TOWARD THE SOUTH NEAR 5 MPH... 7 KM/HR. A GRADUAL
TURN TOWARD SOUTHWEST AND WEST IS EXPECTED DURING THE NEXT 24
HOURS.
MAXIMUM SUSTAINED WINDS ARE NEAR 100 MPH...160 KM/HR...WITH HIGHER
GUSTS. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT
24 HOURS.
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 45 MILES... 75 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 140 MILES...220 KM.
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 968 MB...28.59 INCHES.
DANGEROUS SURF AND RIP CURRENTS...CAUSED BY LARGE SWELLS GENERATED
BY HURRICANE JEANNE...ARE POSSIBLE ALONG THE SOUTHEASTERN U.S.
COAST AND THE NORTHWEST AND CENTRAL BAHAMAS FOR THE NEXT FEW DAYS.
REPEATING THE 11 AM EDT POSITION...26.3 N... 68.5 W. MOVEMENT
TOWARD...SOUTH NEAR 5 MPH. MAXIMUM SUSTAINED
WINDS...100 MPH. MINIMUM CENTRAL PRESSURE... 968 MB.
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER
AT 5 PM EDT.
FORECASTER STEWART
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HURRICANE JEANNE DISCUSSION NUMBER 36
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
11 AM EDT WED SEP 22 2004
SINCE THE EARLIER HURRICANE HUNTER FLIGHT THIS MORNING...THE
CONVECTIVE PATTERN HAS IMPROVED AS INDICATED BY A CONSENSUS DVORAK
INTENSITY ESTIMATE OF T5.0...OR 90 KT. HOWEVER...THE EYE HAS BECOME
CLOUD COVERED AGAIN AND 3-HR AVERAGE AODT VALUES ARE T4.6...OR 80
KT FROM CIMSS...AND T4.8...OR 85 KT...FROM TAFB. BASED ON THE
IMPROVED INNER-CORE CONVECTIVE PATTERN...THE INITIAL INTENSITY OF
JEANNE HAS BEEN INCREASED TO 85 KT...WHICH IS CONSISTENT WITH THE
LAST RECON CENTRAL PRESSURE REPORT OF 968 MB.
THE INITIAL MOTION IS 180/4. THERE REMAINS NO SIGNIFICANT CHANGE TO
THE PREVIOUS TRACK FORECAST AND REASONING. JEANNE HAS MADE A TURN
TO THE SOUTH OVER THE PAST 6 HOURS...AND A GRADUAL TURN TOWARD THE
SOUTHWEST IS EXPECTED WITHIN THE NEXT 12 HOURS...FOLLOWED BY A SLOW
WESTWARD MOTION. A DEEP-LAYER HIGH CENTERED OVER OHIO WITH A RIDGE
EXTENDING SOUTHEASTWARD TO NEAR BERMUDA HAS BEEN GRADUALLY MOVING
EASTWARD. OVER THE NEXT 5 DAYS...THE CENTER OF THE RIDGE IS
FORECAST TO GRADUALLY MOVE TO A POSITION NEAR BERMUDA. THE
CLOCKWISE FLOW AROUND THE HIGH/RIDGE IS EXPECTED TO SLOWLY INCREASE
AND MOVE JEANNE NORTHWESTWARD BY 72 HOURS AND THEN MORE NORTHWARD
BY 96 HOURS. THE NHC MODEL GUIDANCE REMAINS IN GOOD AGREEMENT ON
THIS SCENARIO...WITH ONLY THE NOGAPS MODEL BEING THE WESTERNMOST
OUTLIER IN TAKING JEANNE ACROSS CENTRAL FLORIDA. THE NOGAPS
SCENARIO IS NOT BEING CONSIDERED AT THIS TIME DUE TO ITS MUCH
SLOWER EASTWARD MOVEMENT OF THE RIDGE TO THE NORTH OF JEANNE.
THE VERTICAL SHEAR IS FORECAST TO WEAKEN TO LESS THAN 5 KT IN 24
HOURS...SO SOME SLIGHT STRENGTHENING COULD OCCUR AT THAT TIME.
HOWEVER...THE MOST FAVORABLE UPPER-LEVEL PATTERN IS NOT EXPECTED TO
DEVELOP ACROSS JEANNE UNTIL AROUND 72 HOURS WHEN JEANNE IS FORECAST
TO MOVE UNDERNEATH THE WESTERN PORTION OF A SYNOPTIC-SCALE
ANTICYCLONE WITH A SHARP DIGGING TROUGH TO THE EAST. THAT PATTERN
WOULD ACT TO ENHANCE THE OUTFLOW IN THE EASTERN SEMICIRCLE...BUT
VERY DRY AIR IS EXPECTED TO SURROUND JEANNE AT THAT TIME. THE
INTENSITY FORECAST IS CLOSE TO THE CONSERVATIVE SHIPS INTENSITY
MODEL...BUT IF NO DRY AIR GETS WRAPPED INTO THE INNER-CORE REGION
THEN JEANNE COULD EASILY BE 5-10 KT STRONGER THAN FORECAST.
FORECASTER STEWART
FORECAST POSITIONS AND MAX WINDS
INITIAL 22/1500Z 26.3N 68.5W 85 KT
12HR VT 23/0000Z 26.0N 68.9W 85 KT
24HR VT 23/1200Z 26.0N 69.8W 90 KT
36HR VT 24/0000Z 26.0N 70.9W 90 KT
48HR VT 24/1200Z 26.3N 72.3W 90 KT
72HR VT 25/1200Z 27.5N 75.2W 90 KT
96HR VT 26/1200Z 29.5N 77.0W 80 KT
120HR VT 27/1200Z 33.0N 77.5W 70 KT-APPROACHING CAPE FEAR, NORTH CAROLINA
11 AM JEANNE--100 MPH, S 5 MPH, 968 MB;near CAPE FEAR in 120
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yoda
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11 AM JEANNE--100 MPH, S 5 MPH, 968 MB;near CAPE FEAR in 120
Last edited by yoda on Wed Sep 22, 2004 11:03 am, edited 1 time in total.
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Lebowsky
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MBismyPlayground
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ilmc172pilot
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yoda wrote:Bane wrote:APPROACHING CAPE FEAR, NORTH CAROLINA
Your emphasis here? never saw this in the NHC discussion.
Well, I saw it in the coordinates.. I plotted it and thought I would give a heads up... if you would like.. I will take it off the title...
No need. I just wanted to make sure I didn't miss it.
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