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Hanna, advisory 8

Tropical Storm Hanna Advisory Number 8

Public advisory

National Hurricane Center · public advisory 8 · issued Sep 30, 8:42 AM UTCsource ↗

000
WTNT33 KNHC 300842
TCPAT3
 
BULLETIN
Tropical Storm Hanna Advisory Number   8
NWS National Hurricane Center Miami FL       AL082026
900 AM GMT Wed Sep 30 2026
 
...HANNA EXPECTED TO BECOME A REMNANT LOW BY TONIGHT...
 
 
SUMMARY OF 900 AM GMT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...33.5N 43.9W
ABOUT 1210 MI...1950 KM E OF BERMUDA
ABOUT 995 MI...1600 KM WSW OF THE AZORES
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...ESE OR 120 DEGREES AT 5 MPH...7 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES
 
 
WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 900 AM GMT (0900 UTC), the center of Tropical Storm Hanna was
located near latitude 33.5 North, longitude 43.9 West. Hanna is
moving toward the east-southeast near 5 mph (7 km/h). A turn toward
the east-northeast is expected later today with an increase in
forward speed on Thursday.
 
Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Gradual weakening is expected today and Hanna should become a
post-tropical remnant low by tonight.
 
Tropical-storm-force winds extend outward up to 70 miles (110 km)
from the center.
 
The estimated minimum central pressure is 1006 mb (29.71 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
None.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 300 PM GMT.
 
$$
Forecaster Roberts
 

Forecast discussion

National Hurricane Center · forecast discussion 8 · issued Sep 30, 8:43 AM UTCsource ↗

000
WTNT43 KNHC 300843
TCDAT3
 
Tropical Storm Hanna Discussion Number   8
NWS National Hurricane Center Miami FL       AL082026
900 AM GMT Wed Sep 30 2026
 
This morning's conventional satellite presentation consists of
a poorly organized, severely sheared tropical cyclone.  Although the
associated deep convection is more than 170 mi east of the surface
center, a 0318 UTC OSCAT-3 scatterometer pass indicated that the
cyclone is still producing a small area of tropical-storm-force
winds.  Based on this satellite-derived wind data, the initial
intensity is held at 35 kt.
 
Hanna should gradually weaken today due to increasing deep-layer
northwesterly shear, and continued dry air entrainment.  The
GFS/ECMWF simulated satellite/IR imagery prediction shows Hanna
quickly losing organized deep convection and becoming a
post-tropical cyclone by tonight and opening into a trough of
low pressure over the weekend.  The global models and the
statistical Decay-SHIPS intensity guidance are also indicating that
the remnants of Hanna could merge with a baroclinic system on
Friday.  No significant changes were made to the NHC intensity
forecast.
 
Hanna's initial motion is estimated to be east-southeastward, or
120/4 kt.  This general motion should continue this morning while
the cyclone remains in the low- to mid-level mid-latitude westerly
steering flow provided by a longwave trough moving over the
northeastern Atlantic.  By this evening, Hanna should turn
east-northeastward while the cyclone degenerates into a swirl of
low clouds and is steered by the low-level flow.  The official
forecast is adjusted to the right of the previous advisory and is
nudged toward the HFIP HCCA guidance.
 
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  30/0900Z 33.5N  43.9W   35 KT  40 MPH
 12H  30/1800Z 33.9N  43.3W   30 KT  35 MPH...POST-TROP/REMNT LOW
 24H  01/0600Z 34.4N  41.7W   30 KT  35 MPH...POST-TROP/REMNT LOW
 36H  01/1800Z 35.2N  39.2W   30 KT  35 MPH...POST-TROP/REMNT LOW
 48H  02/0600Z 35.4N  36.7W   25 KT  30 MPH...POST-TROP/REMNT LOW
 60H  02/1800Z 35.6N  34.1W   25 KT  30 MPH...POST-TROP/REMNT LOW
 72H  03/0600Z 35.3N  32.1W   25 KT  30 MPH...POST-TROP/REMNT LOW
 96H  04/0600Z...DISSIPATED
 
$$
Forecaster Roberts
 

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