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| #981770 (Received by flhurricane at: 4:39 AM 10.Sep.2019) TCDAT3 Tropical Storm Gabrielle Discussion Number 28 NWS National Hurricane Center Miami FL AL082019 500 AM AST Tue Sep 10 2019 Gabrielle`s extratropical transition is well underway. Deep convection is now confined to an area near and to the north of the center, and a baroclinic zone is already impinging upon the circulation. The initial wind speed has been maintained at 45 kt, which was in agreement with earlier scatterometer data. The cyclone should become fully extratropical later this morning, and the global models indicate that gradual weakening will occur after that time. As a result, the NHC forecast shows steady weakening after 12 hours, and calls for the system to dissipate in a little more than 2 days as it approaches the northern British Isles. Gabrielle has become embedded within the mid-latitude flow and is now moving northeastward at 22 kt. The cyclone is forecast to continue accelerating northeastward during the next day or so until dissipation occurs. The updated NHC track forecast is similar to the previous advisory and lies near the middle of the tightly cluster model guidance. FORECAST POSITIONS AND MAX WINDS INIT 10/0900Z 43.4N 40.2W 45 KT 50 MPH 12H 10/1800Z 45.2N 36.3W 45 KT 50 MPH...POST-TROP/EXTRATROP 24H 11/0600Z 48.3N 29.8W 40 KT 45 MPH...POST-TROP/EXTRATROP 36H 11/1800Z 51.8N 21.3W 35 KT 40 MPH...POST-TROP/EXTRATROP 48H 12/0600Z 55.0N 11.0W 30 KT 35 MPH...POST-TROP/EXTRATROP 72H 13/0600Z...DISSIPATED $$ Forecaster Brown |
