479  WTNT42 KNHC 230833 TCDAT2  Post-Tropical Cyclone Rose Discussion Number  17 NWS National Hurricane Center Miami FL       AL172021 900 AM GMT Thu Sep 23 2021  Rose has withered away.  The cyclone has not produced organized deep  convection for nearly 24 hours now, and therefore, the system no  longer meets the definition of a tropical cyclone. The initial  intensity of the remnant low is held at 30 kt based on the earlier  ASCAT data.  Rose is moving northwestward at 9 kt.  A turn to the north is expected by tonight, followed by a northeast to east motion as the shallow system moves in the low-level flow ahead of a deep-layer trough.  The remnant low is expected to persist for a couple of days and could produce intermittent bursts of deep convection. However, west-northwesterly shear of 25-30 kt and dry mid-level air should prevent the convection from organizing.  Additional information on Post-Tropical Cyclone Rose 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  23/0900Z 25.2N  41.6W   30 KT  35 MPH...POST-TROPICAL  12H  23/1800Z 26.4N  42.3W   25 KT  30 MPH...POST-TROP/REMNT LOW  24H  24/0600Z 27.8N  42.1W   25 KT  30 MPH...POST-TROP/REMNT LOW  36H  24/1800Z 28.7N  40.6W   25 KT  30 MPH...POST-TROP/REMNT LOW  48H  25/0600Z 29.2N  38.0W   25 KT  30 MPH...POST-TROP/REMNT LOW  60H  25/1800Z...DISSIPATED  $$ Forecaster Cangialosi