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
$$
Forecaster Berg
NWS National Hurricane Center Miami FL AL192023
1100 PM AST Sun Oct 15 2023
A few showers and thunderstorms continue to pulse in association
with Sean, but the activity can no longer be considered organized
or persistent. Dvorak final-T numbers from TAFB and SAB have either
been T1.0 or Too Weak to Classify for the past 18 hours, and as a
result, Sean has degenerated into a remnant low. Maximum winds are
estimated to be 25 kt and are expected to gradually weaken during
the next day or so. The remnant low is forecast to turn westward
overnight, and global models indicate that the circulation should
open up into a trough by 36 hours, if not sooner. The remnant
trough is likely to pass near or north of the northern Leeward
Islands around midweek.
This is the last advisory issued by the National Hurricane Center on
this system. Additional information on this system can be found in
High Seas Forecasts issued by the National Weather Service, under
AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at
ocean.weather.gov/shtml/NFDHSFAT1.php
FORECAST POSITIONS AND MAX WINDS
INIT 16/0300Z 18.2N 49.3W 25 KT 30 MPH...POST-TROP/REMNT LOW
12H 16/1200Z 18.4N 51.0W 25 KT 30 MPH...POST-TROP/REMNT LOW
24H 17/0000Z 18.7N 53.8W 20 KT 25 MPH...POST-TROP/REMNT LOW
36H 17/1200Z...DISSIPATED
$$
Forecaster Berg