245  
WTNT45 KNHC 151432  
TCDAT5  
 
POST-TROPICAL CYCLONE THETA DISCUSSION NUMBER 23  
NWS NATIONAL HURRICANE CENTER MIAMI FL AL302020  
300 PM GMT SUN NOV 15 2020  
 
THETA HAS RUN OUT OF THETA-E. THE CYCLONE HAS BEEN WITHOUT  
SIGNIFICANT DEEP CONVECTION FOR MANY HOURS NOW AND HAS BEEN  
GRADUALLY SPINNING DOWN TODAY. IT NO LONGER MEETS THE QUALIFICATIONS  
OF A TROPICAL CYCLONE, SO THIS IS THE LAST ADVISORY. THE INITIAL  
WIND SPEED IS SET TO 25 KT PER THE LATEST SCATTEROMETER PASS.  
 
THE LOW IS MEANDERING THIS MORNING. IT IS EXPECTED TO BE PICKED UP  
TO THE NORTH-NORTHEAST BY THE NEXT TROUGH OVER THE NORTHEASTERN  
ATLANTIC, ALONG WITH AN INCREASE IN FORWARD SPEED. THE REMNANTS OF  
THETA SHOULD GRADUALLY LOSE STRENGTH DUE TO STRONG SHEAR, VERY DRY  
AIR AND LITTLE INSTABILITY BEFORE DISSIPATING IN A DAY OR TWO.  
 
ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE FOUND IN HIGH SEAS  
FORECASTS ISSUED BY THE UK MET OFFICE UNDER 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 15/1500Z 31.5N 18.2W 25 KT 30 MPH...POST-TROPICAL  
12H 16/0000Z 31.9N 18.1W 25 KT 30 MPH...POST-TROP/REMNT LOW  
24H 16/1200Z 33.7N 17.7W 20 KT 25 MPH...POST-TROP/REMNT LOW  
36H 17/0000Z 36.5N 16.5W 20 KT 25 MPH...POST-TROP/REMNT LOW  
48H 17/1200Z...DISSIPATED  
 

 
FORECASTER BLAKE  
 
 
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