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TROPICAL DEPRESSION FOURTEEN DISCUSSION NUMBER 9
NATIONAL WEATHER SERVICE MIAMI FL
10 AM EST MON OCT 29 2001
THE DEPRESSION IS MAINTAINING CONVECTION IN ITS NORTH-EAST QUADRANT
THIS MORNING. DVORAK INTENSITY ESTIMATES FROM TAFB AND SAB ARE 25
KT...BUT SHIP REPORTS INDICATE THAT WINDS ARE IN THE 30 TO 35 KT
RANGE.
THE DEPRESSION IS SOUTH OF A SMALL MID-LEVEL RIDGE. MODELS ARE IN
GOOD AGREEMENT THAT THIS RIDGE WILL WEAKEN AND MOVE EASTWARD WITH
THE APPROACH OF THE MID TO UPPER TROUGH CURRENTLY OFF THE
NORTHEASTERN STATES. THE RECENT EXPANSION OF THE CIRRUS TO THE
NORTH OF THE DEPRESSION MAY INDICATE THAT THIS IS ALREADLY
BEGINNING. THUS A TURN TO THE NORTHWEST...FOLLOWED BY
RECURVATURE...IS EXPECTED. TRACK GUIDANCE IS FAIRLY WELL
CLUSTERED. THE OFFICIAL FORECAST IS SIMILAR TO THE PREVIOUS
ADVISORY AND IS CLOSE TO THE AVN.
THE SHIPS AND GFDL GUIDANCE CONTINUE TO INDICATE STRENGTHENING TO A
TROPICAL STORM. ONCE THE SYSTEM MAKES THE TURN TO THE NORTH THE
SHEAR MAY LESSEN TEMPORARILY. GIVEN THAT THE DEPRESSION IS NEARLY A
STORM ALREADY...THE OFFICIAL FORECAST CONCURS. AFTER 48 HOURS...THE
ACCELERATING CYCLONE SHOULD BECOME ABSORBED BY THE EXTRATROPICAL LOW
ASSOCIATED WITH APPROACHING UPPER TROUGH.
FORECASTER FRANKLIN
FORECAST POSITIONS AND MAX WINDS
INITIAL 29/1500Z 28.0N 43.5W 30 KTS
12HR VT 30/0000Z 28.4N 45.0W 35 KTS
24HR VT 30/1200Z 30.0N 46.1W 40 KTS
36HR VT 31/0000Z 32.7N 45.4W 45 KTS
48HR VT 31/1200Z 36.5N 43.0W 40 KTS...DISSIPATING
72HR VT 01/1200Z...ABSORBED BY EXTRATROPICAL LOW
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