[Tropical] Tropical Cyclone Discussion

[EMWIN Server]

WTNT45 KNHC 240231
TCDAT5

Tropical Storm Don Discussion Number  40
NWS National Hurricane Center Miami FL       AL052023
300 AM GMT Mon Jul 24 2023

Don continues to slowly weaken and has lost just about all of its
deep convection due to very cool waters.  An ASCAT-B pass around
00Z showed peak winds of about 40 kt, and because the instrument
can't always resolve the maximum winds in the storm, the initial
intensity is set to 45 kt.  Don is well on its way to become a
post-tropical cyclone and it will likely complete the process later
today.

The storm is moving northeastward at 17 kt in the flow on the
northwest side of a subtropical ridge.  A turn to the east-northeast
and then the east are expected later today and tonight while the
storm moves in generally zonal flow on the north side of the ridge.
Little change was made to the previous NHC track forecast.  Don is
expected to continue to weaken due to cool waters and dry air
entrainment until it dissipates early Tuesday.

Don has been a very long-lasting tropical cyclone (including
subtropical stages) for the month of July.  Preliminary,
up to this point the storm is tied for the 6th longest-lasting
system on record for the month.

FORECAST POSITIONS AND MAX WINDS

INIT  24/0300Z 46.3N  44.8W   45 KT  50 MPH
 12H  24/1200Z 47.4N  41.9W   35 KT  40 MPH...POST-TROPICAL
 24H  25/0000Z 48.4N  37.1W   30 KT  35 MPH...POST-TROP/REMNT LOW
 36H  25/1200Z...DISSIPATED

$$
Forecaster Cangialosi
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