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| #1025285 (Received by flhurricane at: 10:03 AM 14.Nov.2020) TCDAT5 Tropical Storm Theta Discussion Number 19 NWS National Hurricane Center Miami FL AL302020 300 PM GMT Sat Nov 14 2020 Theta`s center continues to be devoid of deep convection as dry air entrains into the system`s circulation. The edge of the only nearby surviving convection is located about 60 n mi to the southeast of the cyclone`s center due to increasing northwesterly shear. A recent ASCAT overpass showed a fair amount of wind vectors of 30-34 kt, therefore the initial intensity remains 35 kt for this advisory. The shear is expected to increase even more today, and the surrounding environment is forecast to dry out further. These factors, that should persist for at least the next few days, should prevent any new convection from developing near the center of Theta. The latest NHC forecast calls for the system to become a remnant low in 12 h and dissipate in 72 h, as the circulation gradually spins down. The storm is now moving just south of due east around 7 kt as it is steered along the northern periphery of a mid-level ridge. This ridge is forecast to weaken over the next couple of days, which will cause Theta to slow its forward motion. Early next week, increasing southerly flow ahead of an approaching cold front should pick up the remnants of Theta and accelerate them northward, and then northeastward. The latest NHC track forecast is similar to the previous one and lies near the track consensus models. FORECAST POSITIONS AND MAX WINDS INIT 14/1500Z 31.8N 20.2W 35 KT 40 MPH 12H 15/0000Z 31.6N 19.1W 35 KT 40 MPH...POST-TROP/REMNT LOW 24H 15/1200Z 31.7N 18.3W 30 KT 35 MPH...POST-TROP/REMNT LOW 36H 16/0000Z 32.4N 17.8W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 16/1200Z 33.7N 17.4W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 17/0000Z 36.1N 16.4W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 17/1200Z...DISSIPATED $$ Forecaster Latto |
