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
$$
Forecaster D. Zelinsky
NWS National Hurricane Center Miami FL AL132024
300 PM GMT Sat Oct 12 2024
ASCAT-B data valid near 1300 UTC indicated that Leslie's fast
forward motion has caused it to open into a trough. Therefore, this
will be the last NHC advisory on Leslie. The ASCAT data indicated
that winds of 40-45 kt are still present on the east side of
Leslie's remnants, where it continues to produce limited deep
convection.
A mid-latitude frontal system is nearing the remnants of Leslie, and
the two systems are expected to merge within the next 12 h or so,
marking Leslie's full transition to a post-tropical cyclone. It is
possible that Leslie will redevelop a closed circulation as a
non-tropical low at that point. The cyclone is expected to turn
eastward on Sunday, bringing it very near or over the Azores late
Sunday and through early Monday. By Monday afternoon, Leslie's
center is expected to become poorly defined again as it interacts
with another weaker mid-latitude cyclone to the east of the Azores.
Additional information on this system can be found in High Seas
Forecasts issued by the National Weather Service, under AWIPS header
NFDHSFAT1, WMO header FZNT01 KWBC, and online at
ocean.weather.gov/shtml/NFDHSFAT1.php
FORECAST POSITIONS AND MAX WINDS
INIT 12/1500Z 33.3N 43.4W 45 KT 50 MPH...REMNANTS OF LESLIE
12H 13/0000Z...DISSIPATED
$$
Forecaster D. Zelinsky