Tropical Storm Hanna Discussion Number   6
NWS National Hurricane Center Miami FL       AL082026
900 PM GMT Tue Sep 29 2026

Satellite imagery this afternoon shows that the low-level center of 
Hanna continues mostly exposed to the west of the main convective 
area. However, the convective area has become more elongated 
east-west and the system looks more frontal than it did six hours 
ago due to interaction with a frontal boundary near and to the east 
of the cyclone. Satellite intensity estimates have changed little 
since the last advisory, so the initial intensity remains 35 kt 
based on this and an earlier scatterometer overpass.

The initial motion is now 125/10 kt.  Hanna is located along the 
southern edge of the mid-latitude westerlies to the southwest of a 
large trough over the northeastern Atlantic.  This pattern is 
responsible for the current southeasterly motion.  During the next 
12-24 h, the flow near the cyclone become more west-to-east, and as 
Hanna weakens vertically a low-level ridge centered south of the 
Azores will become the main steering influence. This should result 
in the cyclone or its remnants turning east-northeastward.  The new 
forecast track is nudged a little to the south of the previous track 
due mainly to the initial position and motion.

Hanna should gradually weaken due to shear, dry air entrainment, and 
possible merger with the frontal boundary.  The latest GFS/ECMWF 
simulated satellite imagery now forecasts the system to stop 
producing convection at around 36 h, at which time it would 
degenerate to a remnant low.  After that, the remnant low is 
expected to weaken to a trough by 96 h.


FORECAST POSITIONS AND MAX WINDS

INIT  29/2100Z 34.0N  44.5W   35 KT  40 MPH
12H  30/0600Z 33.5N  43.5W   35 KT  40 MPH
24H  30/1800Z 33.9N  42.4W   30 KT  35 MPH
36H  01/0600Z 34.5N  40.6W   30 KT  35 MPH...POST-TROP/REMNT LOW
48H  01/1800Z 35.4N  38.2W   30 KT  35 MPH...POST-TROP/REMNT LOW
60H  02/0600Z 36.2N  35.5W   25 KT  30 MPH...POST-TROP/REMNT LOW
72H  02/1800Z 36.8N  32.9W   25 KT  30 MPH...POST-TROP/REMNT LOW
96H  03/1800Z...DISSIPATED

$$
Forecaster Beven