000
WTNT43 KNHC 121442
TCDAT3
 
Remnants Of Leslie Discussion Number  41
NWS National Hurricane Center Miami FL       AL132024
300 PM GMT Sat Oct 12 2024
 
ASCAT-B data valid near 1300 UTC indicated that Leslie's fast 
forward motion has caused it to open into a trough. Therefore, this 
will be the last NHC advisory on Leslie. The ASCAT data indicated 
that winds of 40-45 kt are still present on the east side of 
Leslie's remnants, where it continues to produce limited deep 
convection.
 
A mid-latitude frontal system is nearing the remnants of Leslie, and 
the two systems are expected to merge within the next 12 h or so, 
marking Leslie's full transition to a post-tropical cyclone. It is 
possible that Leslie will redevelop a closed circulation as a 
non-tropical low at that point. The cyclone is expected to turn 
eastward on Sunday, bringing it very near or over the Azores late 
Sunday and through early Monday. By Monday afternoon, Leslie's 
center is expected to become poorly defined again as it interacts 
with another weaker mid-latitude cyclone to the east of the Azores.

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  12/1500Z 33.3N  43.4W   45 KT  50 MPH...REMNANTS OF LESLIE
 12H  13/0000Z...DISSIPATED
 
$$
Forecaster D. Zelinsky