Official Discussion issued by the National Hurricane Center

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

Copy of official data

Tropical Storm Cindy Discussion Number   7
NWS National Hurricane Center Miami FL       AL042023
500 PM AST Fri Jun 23 2023

Since the previous advisory, the convective structure of Cindy has 
become more anemic, with the earlier banding structure degrading 
into more scattered convection distributed around the low-level 
circulation. It is possible some nearby dry air has been entrained 
into the circulation, limiting more organized convection this 
afternoon. The lackluster convective structure was also observed on 
a recent 1852 UTC SSMIS pass. Dvorak T-numbers have either held 
steady or decreased slightly, and the initial intensity will remain 
45 kt for this advisory. 

While the shear has not yet increased over Cindy and sea surface 
temperatures underneath remain sufficently warm, the apparent 
dry-air entrainment might be a limiting factor on more robust 
intensification in the short term. After 24 h, Cindy is forecast to 
encounter higher shear from the northwest which should induce a 
weakening trend. The intensity guidance is a bit lower than the 
previous cycle, and the NHC forecast also shows a slightly lower 
peak intensity than earlier. Under continued shear from an 
upper-level trough, Cindy is still forecast to become a remnant low 
and dissipate by the end of the forecast period. However, one thing 
worth mentioning beyond the forecast period is that some of the 
guidance (most notably the GFS) shows the possibility of Cindy 
regenerating near Bermuda, though that is beyond the scope of the 
current forecast.

Cindy continues to move to the west-northwest, perhaps a bit more 
poleward than before at 295/14 kt. Not much has changed with the 
forecast track philosophy with a similar west-northwestward motion 
expected to continue as the system is steered by a low- to mid-level 
ridge to its east-northeast. As the system weakens, it is more 
likely to be steered by the low-level ridging which should maintain 
this motion through the end of the forecast period. The track 
guidance made another small shift to the northeast, and the latest 
NHC track forecast was similarly adjusted a bit in that direction, 
but remains notably on the south side of the guidance envelope, 
fairly close to the latest ECMWF forecast. This track forecast 
remains well to the northeast of the northern Leeward Islands.


INIT  23/2100Z 13.3N  49.3W   45 KT  50 MPH
12H  24/0600Z 14.5N  51.2W   50 KT  60 MPH
24H  24/1800Z 16.3N  53.8W   50 KT  60 MPH
36H  25/0600Z 18.1N  56.4W   45 KT  50 MPH
48H  25/1800Z 19.9N  59.0W   40 KT  45 MPH
60H  26/0600Z 21.6N  61.1W   40 KT  45 MPH
72H  26/1800Z 23.1N  63.1W   35 KT  40 MPH
96H  27/1800Z 24.8N  65.2W   30 KT  35 MPH...POST-TROP/REMNT LOW
120H  28/1800Z...DISSIPATED

Forecaster Papin