Atlantic Basin Tropical Cyclones

Post-Tropical Cyclone Martin Forecast Discussion


000
WTNT41 KNHC 032033
TCDAT1

Post-Tropical Cyclone Martin Discussion Number  10
NWS National Hurricane Center Miami FL       AL162022
900 PM GMT Thu Nov 03 2022

ASCAT-C data that was not available until after the issuance of the 
last advisory, but was valid at 1317 UTC, showed that Martin likely 
became frontal earlier today and the system no longer has a 
well-defined circulation. In addition, both TAFB and SAB evaluated 
the system as extratropical at 1800 UTC. Therefore, Martin is now 
classified as post-tropical and this will be the last NHC advisory.

While Martin does not currently appear to have a well-defined 
center, the powerful post-tropical cyclone is expected to redevelop 
a well-defined center as it occludes over the next 12 to 24 h. 
Martin is moving at a remarkable clip of 50 kt, but should begin to 
slow down soon and turn north-northwestward during the next few 
hours. After that, the cyclone is forecast to move relatively slowly 
on Friday before picking up speed toward the east-southeast or east 
through the early weekend. Martin's maximum winds are still forecast 
to slowly decrease over the next few days, however the combination 
of Martin and other non-tropical low pressure systems are still 
expected to produce hazardous wind and seas over a very wide area of 
the North Atlantic for the next couple of days. 

Additional information on marine hazards can be found in High Seas 
Forecasts issued by the National Weather Service, the UK Met 
Office, and Meteo France. Links to each product are provided below.

* National Weather Service: AWIPS Header NFDHSFAT1, WMO header 
FZNT01 KWPC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php
* UK Met Office: WMO header FQNT21 EGRR and online at 
www.metoffice.gov.uk/weather/specialist-forecasts/coast-and-sea/high
-seas-forecast/
* Meteo France: WMO header FQNT50 LFPW and online at 
www.meteofrance.com/previsions-meteo-marine/bulletin/grandlarge/
metarea2.


FORECAST POSITIONS AND MAX WINDS

INIT  03/2100Z 50.5N  34.5W   70 KT  80 MPH...POST-TROPICAL
 12H  04/0600Z 55.0N  35.0W   70 KT  80 MPH...POST-TROP/EXTRATROP
 24H  04/1800Z 56.5N  35.0W   60 KT  70 MPH...POST-TROP/EXTRATROP
 36H  05/0600Z 56.5N  31.0W   55 KT  65 MPH...POST-TROP/EXTRATROP
 48H  05/1800Z 55.5N  25.0W   50 KT  60 MPH...POST-TROP/EXTRATROP
 60H  06/0600Z 55.0N  17.0W   45 KT  50 MPH...POST-TROP/EXTRATROP
 72H  06/1800Z...DISSIPATED

$$
Forecaster D. Zelinsky



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