Post-Tropical Cyclone Karen Discussion Number   4
NWS National Hurricane Center Miami FL       AL112025
900 PM GMT Fri Oct 10 2025

Convection associated with Karen has dissipated this evening, 
leaving the system a swirl of low- to mid-level clouds.  The cyclone 
will be moving over even colder waters of the North Atlantic during 
the next 12 to 24 hours, and organized convection is not expected to 
return. Therefore, Karen has lost its designation as a subtropical 
cyclone, and this will be the last NHC advisory.  The initial 
intensity remains 40 kt, based on earlier ASCAT data. The low should 
gradually weaken during the next 12 to 24 hours, and it is expected 
to open up into a trough and be absorbed by an approaching frontal 
system in 24 to 36 hours.

The low is moving north-northeastward or 025 degrees at 14 kt. The 
system should continue to accelerate north-northeastward ahead of 
an approaching deep-layer trough through Saturday.  The updated NHC 
track forecast is once again similar to the previous forecast and 
near the center of the guidance envelope. 

This is the last NHC advisory on Karen.  Additional information on 
this system can be found in High Seas Forecasts issued by Meteo 
France under WMO header FQNT50 LFPW and available on the web at
https://tgftp.nws.noaa.gov/data/raw/fq/fqnt50.lfpw..txt

FORECAST POSITIONS AND MAX WINDS

INIT  10/2100Z 47.5N  30.2W   40 KT  45 MPH...POST-TROPICAL
12H  11/0600Z 49.4N  29.0W   35 KT  40 MPH...POST-TROPICAL
24H  11/1800Z 53.5N  27.1W   30 KT  35 MPH...POST-TROPICAL
36H  12/0600Z...DISSIPATED

$$
Forecaster Brown