[Tropical] Tropical Cyclone Discussion

[EMWIN Server]

WTNT45 KNHC 240827
TCDAT5

Tropical Storm Don Discussion Number  41
NWS National Hurricane Center Miami FL       AL052023
900 AM GMT Mon Jul 24 2023

Deep convection has evaporated near Don, though it hasn't been free
of convection long enough to declare it post-tropical yet.  The
initial wind speed is lowered to 40 kt, in concert with the Dvorak
estimates that are decreasing as fast as the rules allow.  Don
should become post-tropical soon and continue to weaken due to
persistent cold waters and shear.

The storm is moving east-northeastward at about 16 kt, and that
general motion is likely to persist until the system dissipates
in about a day.  All of the global models show Don opening up into
a trough in 18-24 hours, so the dissipation phase is moved to that
time.  No other significant changes were made to the forecast.

Don has been a very long-lasting tropical cyclone (including
subtropical stages) for the month of July.  Preliminary data
indicate that the storm is the 5th longest-lasting system on
record for the month, just behind Emily of 2005.


FORECAST POSITIONS AND MAX WINDS

INIT  24/0900Z 47.0N  43.0W   40 KT  45 MPH
 12H  24/1800Z 47.9N  39.7W   35 KT  40 MPH...POST-TROPICAL
 24H  25/0600Z...DISSIPATED

$$
Forecaster Blake
This weather bulletin was brought to you by:
www.nashvilleweather.net