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| #1145075 (Received by flhurricane at: 10:36 PM 23.Jul.2023) 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 |
