Official Discussion issued by the National Hurricane Center

Tammy (AL202023) DATA RELEASED: 10/29/2023 3:00:00 AM UTC

Copy of official data

Tropical Storm Tammy Discussion Number  39
NWS National Hurricane Center Miami FL       AL202023
1100 PM AST Sat Oct 28 2023

Tammy's second time as a tropical cyclone appears near its end. 
While some sheared puffs of moderate convection have attempted to 
re-form off to the northeast of an increasingly elongated 
circulation center, this activity lacks sufficient organization to 
maintain Tammy as a tropical cyclone. For now, advisories will be 
continued in the event that there could be one final nocturnal burst 
of deeper convection closer to the center. In the mean time, 
satellite intensity estimates and recent ASCAT data suggest some 
continued spin down from this afternoon, and the initial intensity 
is set at 35 kt this advisory. If more organized convection does not 
return soon, Tammy could become a post-tropical low as soon as 
overnight, and likely during the day tomorrow as the storm succumbs 
to the increasingly hostile high shear and dry mid-level air 

Tammy is beginning to lose latitude, with the estimated motion now
east-southeast at 105/15 kt. Over the next 2-3 days, Tammy or its
remnant low should be primarily steered clockwise around an
amplifying ridge to the storm's north and west. This should result
in a further turn southeastward and then southward before the
low-level circulation opens up into a trough. The latest NHC
forecast is once again a bit faster than the prior forecast, but
lies close to the simple and corrected consensus aids TVCN and HCCA.


INIT  29/0300Z 32.6N  55.2W   35 KT  40 MPH
12H  29/1200Z 32.0N  52.0W   30 KT  35 MPH...POST-TROP/REMNT LOW
24H  30/0000Z 30.5N  48.3W   30 KT  35 MPH...POST-TROP/REMNT LOW
36H  30/1200Z 29.0N  46.0W   25 KT  30 MPH...POST-TROP/REMNT LOW
48H  31/0000Z 27.5N  45.5W   20 KT  25 MPH...POST-TROP/REMNT LOW
60H  31/1200Z 26.5N  46.0W   20 KT  25 MPH...POST-TROP/REMNT LOW
72H  01/0000Z...DISSIPATED

Forecaster Papin