Official Discussion issued by the National Hurricane Center

Leslie (AL132024) DATA RELEASED: 10/8/2024 3:00:00 PM UTC

Copy of official data

Tropical Storm Leslie Discussion Number  25
NWS National Hurricane Center Miami FL       AL132024
1100 AM AST Tue Oct 08 2024

Satellite images show Leslie has made a bit of a comeback this 
morning, with convection trying to wrap around the center. Microwave 
passes also display that Leslie still has some inner-core features 
including a partial eyewall.  Overall, Dvorak estimates are about 
the same as earlier, so the initial wind speed will stay 60 kt.

Plentiful dry air in the mid-levels of the atmosphere has been 
preventing sustained deep convection near Leslie, despite 
low-to-moderate shear.  Leslie does have a short window where the 
shear diminishes later today and tomorrow, though Leslie will also 
be contending with less instability near the wake of Kirk.  While 
some of the guidance is showing re-strengthening, the above factors 
generally argue for little significant change during the next day or 
so.  The new forecast is nudged higher than the previous one, but 
lies below the model consensus through 36 hours.  After that time, 
the storm should encounter strong northerly flow of over 50 kt, 
which is forecast to cause Leslie to quickly decouple and degenerate 
into a remnant low by this weekend.

The initial motion is estimated to be northwestward, or 310/11 kt.
There are no significant track changes to report as Leslie is being
steered around the southwest to northwest sides of the subtropical
ridge, causing the storm's motion to change to the north late
tomorrow and then recurve to the northeast later this week.  Only
cosmetic changes were made to the last NHC forecast.


FORECAST POSITIONS AND MAX WINDS

INIT  08/1500Z 19.4N  45.6W   60 KT  70 MPH
12H  09/0000Z 20.5N  46.7W   60 KT  70 MPH
24H  09/1200Z 21.7N  47.9W   60 KT  70 MPH
36H  10/0000Z 22.6N  48.7W   60 KT  70 MPH
48H  10/1200Z 23.4N  49.4W   55 KT  65 MPH
60H  11/0000Z 24.6N  49.8W   50 KT  60 MPH
72H  11/1200Z 26.3N  48.9W   40 KT  45 MPH...POST-TROPICAL
96H  12/1200Z 30.7N  43.7W   35 KT  40 MPH...POST-TROPICAL
120H  13/1200Z 34.0N  36.0W   30 KT  35 MPH...POST-TROP/REMNT LOW

$$
Forecaster Blake