WTNT41 KNHC 032033

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.


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