OrlandoDan
(Weather Master)
Sat Sep 25 2004 02:58 AM
Re: Jeanne Moving West

Jeanne has a large eye and the wind field is expanding. Last Air
Force reconnaissance plane in the area measured a minimum pressure
of 964 mb. Earlier a NOAA plane measured a peak wind of 107 knots
at flight level. Thereafter...an Air Force plane measured only 95
knots in the same area. T-numbers have not increased and remain at
5.0 on the Dvorak scale. The initial intensity is kept at 85 knots
until new data comes from another plane currently approaching the
hurricane. The upper-level wind environment continues to be
favorable for strengthening as indicated by the hurricane's outflow
and raob data. This...in combination with a warmer ocean between
the Bahamas and Florida...suggests some strehgthening and Jeanne
could become a major hurricane before landfall.

The hurricane has been moving westward at about 10 knots. The strong
high north of the hurricane will continue to force Jeanne on this
general track for the next 12 to 24 hours. Thereafter...a gradual
turn to the northwest and north should begin as the high shifts
eastward. Althouh we are confident that the northward turn will
occur...only a few more hours of additional westward motion than
anticipated would bring the core of the hurricane farther inland
over the peninsula. On the other hand...the hurricane could also
make the turn earlier and slide along the East Coast of Florida. At
this time...all indications are that the hurricane will move inland
and will make the northward turn over the peninsula. This is based
on the latest available model guidance which in fact has shifted a
little bit westward. Even the GFDL which kept the core of the
hurricane over water is now keeping the huricane hugging the East
Coast of central and North Florida.

Forecaster Avila

forecast positions and Max winds

initial 25/0300z 26.5n 74.9w 85 kt
12hr VT 25/1200z 26.6n 76.8w 95 kt
24hr VT 26/0000z 27.2n 79.1w 100 kt
36hr VT 26/1200z 28.0n 81.0w 75 kt...inland
48hr VT 27/0000z 29.5n 81.8w 45 kt...inland
72hr VT 28/0000z 33.5n 80.5w 30 kt...inland
96hr VT 29/0000z 37.5n 75.0w 30 kt...over water
120hr VT 30/0000z 42.5n 66.0w 30 kt...over water

$$



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