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Days since last H. Landfall - US: Any 282 (Nate) , Major: 299 (Maria) Florida - Any: 309 (Irma) Major: 309 (Irma)
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#903144 (Received by flhurricane at: 10:56 PM 14.Sep.2017)

Tropical Depression Fourteen Discussion Number 1
NWS National Hurricane Center Miami FL AL142017
1100 PM AST Thu Sep 14 2017

Convection associated with an area of low pressure over the far
eastern Atlantic has become much better organized during the past 12
hours, with an increase in banding over the western portion of the
circulation. A Dvorak classification of 2.0 from TAFB suggests that
the intensity is around 30 kt. The system is currently embedded
within an area of light to moderate easterly shear. This should not
prevent the system from gradually strengthening while it moves over
warm water during the next couple of days. After that time, a mid-
to upper-level trough over the central Atlantic is expected to cause
an increase in southwesterly shear, which could become quite strong
by days 4 and 5. As a result, weakening is expected late in the
forest period. The NHC intensity forecast is between the higher
statistical guidance and the lower dynamical models.

The depression is moving west-northwestward or 285/19 kt. A high
pressure ridge currently over the eastern Atlantic is forecast to
weaken as the aforementioned trough develops over the central
Atlantic by early next week. This should cause a significant
reduction in the forward speed of the depression over the weekend.
There is some spread in the track guidance later in the period, with
the GFS taking a stronger cyclone more northward, while the EC takes
a weaker system more westward. The NHC track is between these
solutions and is close to the TVCX and HCCA consensus models.


INIT 15/0300Z 10.7N 25.4W 30 KT 35 MPH
12H 15/1200Z 11.2N 27.4W 40 KT 45 MPH
24H 16/0000Z 11.5N 29.3W 45 KT 50 MPH
36H 16/1200Z 11.5N 30.7W 50 KT 60 MPH
48H 17/0000Z 11.5N 31.7W 55 KT 65 MPH
72H 18/0000Z 11.8N 34.5W 60 KT 70 MPH
96H 19/0000Z 12.8N 38.6W 50 KT 60 MPH
120H 20/0000Z 14.4N 43.3W 40 KT 45 MPH

Forecaster Brown