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Chill falls over the Atlantic as the official season heads towards close
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| #1062920 (Received by flhurricane at: 4:36 AM 23.Sep.2021) 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 |
