|
HURRICANE RELIEF:
1-800-HELP-NOW
AMERICAN
RED CROSS
Click here to view the Forecast/Discussion archive for this storm
Post-Tropical Cyclone Isaac Discussion Number 19
NWS National Hurricane Center Miami FL AL102024
300 PM GMT Mon Sep 30 2024
Geostationary satellite data this morning indicates that Isaac has
completed its transition to a Post-Tropical Extratropical Low and
this will be the last NHC advisory. The remaining moderate-to-deep
convection has sheared off to the northeast as stable stratocumulus
clouds have fully infiltrated its low-level circulation from the
west. The initial intensity has been lowered to 50 kt blending the
latest subjective and objective measurements.
The post-tropical cyclone is still moving east-northeastward at
about 065/15 kt. A subtle turn to the northeast is still expected
over the next couple of days as the cyclone remains embedded in the
mid-latitude westerlies. The guidance has shifted a bit east of the
prior forecast track, partially a reflection of the more eastward
initial position, and the NHC track was nudged in that direction.
Over the forecast period, the cyclone is expected to slowly weaken,
lacking baroclinic support for much non-tropical development. The
low should ultimately dissipate in the far North Atlantic to the
west of Ireland before the end of the week.
Additional information on this system can be found in
High Seas Forecasts issued by Meteo France and the the UK Met
Office. Links to each product are provided below:
Meteo France: WMO header FQNT50 LFPW and available on the web at
www.meteofrance.com/previsions-meteo-marine/bulletin/grandlarge/
metarea2.
UK Met Office: WMO header FQNT21 EGRR and on the web at
metoffice.gov.uk/weather/specialist-forecasts/coast-and-sea/high-
seas-forecast/.
FORECAST POSITIONS AND MAX WINDS
INIT 30/1500Z 44.8N 29.1W 50 KT 60 MPH...POST-TROP/EXTRATROP
12H 01/0000Z 46.0N 26.2W 45 KT 50 MPH...POST-TROP/EXTRATROP
24H 01/1200Z 47.6N 23.6W 40 KT 45 MPH...POST-TROP/EXTRATROP
36H 02/0000Z 49.3N 22.0W 35 KT 40 MPH...POST-TROP/EXTRATROP
48H 02/1200Z 50.6N 20.7W 35 KT 40 MPH...POST-TROP/EXTRATROP
60H 03/0000Z 52.0N 19.3W 35 KT 40 MPH...POST-TROP/EXTRATROP
72H 03/1200Z 54.0N 17.5W 30 KT 35 MPH...POST-TROP/EXTRATROP
96H 04/1200Z...DISSIPATED
$$
Forecaster Papin
 | 
