Official Discussion issued by the National Hurricane Center

Don (AL052023) DATA RELEASED: 7/24/2023 3:00:00 AM UTC

Copy of official data

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 

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. 


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