306  
WTNT44 KNHC 160233  
TCDAT4  
 
POST-TROPICAL CYCLONE SEAN DISCUSSION NUMBER 21  
NWS NATIONAL HURRICANE CENTER MIAMI FL AL192023  
1100 PM AST SUN OCT 15 2023  
 
A FEW SHOWERS AND THUNDERSTORMS CONTINUE TO PULSE IN ASSOCIATION  
WITH SEAN, BUT THE ACTIVITY CAN NO LONGER BE CONSIDERED ORGANIZED  
OR PERSISTENT. DVORAK FINAL-T NUMBERS FROM TAFB AND SAB HAVE EITHER  
BEEN T1.0 OR TOO WEAK TO CLASSIFY FOR THE PAST 18 HOURS, AND AS A  
RESULT, SEAN HAS DEGENERATED INTO A REMNANT LOW. MAXIMUM WINDS ARE  
ESTIMATED TO BE 25 KT AND ARE EXPECTED TO GRADUALLY WEAKEN DURING  
THE NEXT DAY OR SO. THE REMNANT LOW IS FORECAST TO TURN WESTWARD  
OVERNIGHT, AND GLOBAL MODELS INDICATE THAT THE CIRCULATION SHOULD  
OPEN UP INTO A TROUGH BY 36 HOURS, IF NOT SOONER. THE REMNANT  
TROUGH IS LIKELY TO PASS NEAR OR NORTH OF THE NORTHERN LEEWARD  
ISLANDS AROUND MIDWEEK.  
 
THIS IS THE LAST ADVISORY ISSUED BY THE NATIONAL HURRICANE CENTER ON  
THIS SYSTEM. ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE FOUND IN  
HIGH SEAS FORECASTS 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 16/0300Z 18.2N 49.3W 25 KT 30 MPH...POST-TROP/REMNT LOW  
12H 16/1200Z 18.4N 51.0W 25 KT 30 MPH...POST-TROP/REMNT LOW  
24H 17/0000Z 18.7N 53.8W 20 KT 25 MPH...POST-TROP/REMNT LOW  
36H 17/1200Z...DISSIPATED  
 

 
FORECASTER BERG  
 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab TPC Page Main Text Page