Official Discussion issued by the National Hurricane Center

Cindy (AL042023) DATA RELEASED: 6/23/2023 9:00:00 AM UTC

Copy of official data

Tropical Storm Cindy Discussion Number   5
NWS National Hurricane Center Miami FL       AL042023
500 AM AST Fri Jun 23 2023

Cindy is continuing to show signs of improvement based on satellite
imagery.  Deep convection with cold cloud tops of less than -80
degrees C are near the estimated low-level center, an indication the
vertical wind shear is likely weakening.  The initial intensity has
been increased to 40 kt based on a blend of the 3.0 and 2.5
subjective Dvorak satellite intensity estimates from TAFB and SAB,

The reasoning behind the intensity forecast is unchanged.  SHIPS 
model guidance indicates that Cindy will remain embedded within an 
area of weak vertical wind shear for the next day or so, shielding 
it from the surrounding drier mid-level airmass.  Given the 
relatively conducive environmental and oceanic conditions,  gradual 
strengthening is expected.  Beyond 48 h, the deep-layer shear is 
forecast to increased which, in combination with the dry air, will 
likely weaken Cindy early next week.  The official intensity 
forecast is very similar to the previous prediction.

Cindy is moving west-northwestward at 13 kt.  This motion is 
expected to continue during the next several days as Cindy moves 
around the southwest periphery of a subtropical ridge.  The track 
guidance for the cyclone has shifted northward in the 3-5 day range, 
and the NHC track forecast has been nudged northward as a result.  
This track still keeps Cindy well to the northeast of the northern 
Leeward Islands.


INIT  23/0900Z 12.1N  46.9W   40 KT  45 MPH
12H  23/1800Z 12.9N  48.7W   45 KT  50 MPH
24H  24/0600Z 14.3N  51.2W   50 KT  60 MPH
36H  24/1800Z 16.0N  53.9W   50 KT  60 MPH
48H  25/0600Z 17.7N  56.5W   50 KT  60 MPH
60H  25/1800Z 19.4N  59.0W   45 KT  50 MPH
72H  26/0600Z 20.9N  61.4W   40 KT  45 MPH
96H  27/0600Z 23.5N  65.0W   35 KT  40 MPH
120H  28/0600Z 25.7N  67.3W   30 KT  35 MPH...POST-TROP/REMNT LOW

Forecaster Bucci