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Post-Tropical Cyclone Gert Discussion Number  13
NWS National Hurricane Center Miami FL       AL062023
1100 AM AST Tue Aug 22 2023

Gert has finally succumbed to the very unfavorable environmental 
conditions it has been embedded in for the last several days. First 
light visible satellite imagery shows the low-level circulation has 
become very diffuse, and is likely very close to opening up into a 
trough. In fact, the surface observations in the Lesser Antilles to 
the west of Gert have been rising this morning despite the 
circulation moving closer to them. In addition, all of the deep 
convective activity east of the center has largely dissipated. 
Based on these available data, Gert no longer meets the definition 
of a tropical cyclone, and this will be the final advisory. 

The initial motion is a slow west-northwest drift at about 4 kt. The 
remnant low is forecast to turn northward and drift very slowly 
until it completely dissipates in about 2-3 days. The guidance is 
in good agreement with this scenario. Future information on Gert 
can also be found in High Seas forecast issued by the National 
Weather Service, under AWIPS header NFDHSFAT1, WMO header FZNT01 
KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php
 
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  22/1500Z 17.4N  59.7W   25 KT  30 MPH...POST-TROP/REMNT LOW
 12H  23/0000Z 18.3N  60.0W   25 KT  30 MPH...POST-TROP/REMNT LOW
 24H  23/1200Z 19.0N  60.0W   20 KT  25 MPH...POST-TROP/REMNT LOW
 36H  24/0000Z 19.2N  59.8W   20 KT  25 MPH...POST-TROP/REMNT LOW
 48H  24/1200Z 18.9N  59.6W   20 KT  25 MPH...POST-TROP/REMNT LOW
 60H  25/0000Z...DISSIPATED
 
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Forecaster Papin/R. Zelinsky
 
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