ZCZC MIATCDEP1 ALL TTAA00 KNHC DDHHMM Tropical Storm Kevin Discussion Number 19 NWS National Hurricane Center Miami FL EP112021 800 PM PDT Wed Aug 11 2021 The center of Kevin this evening consists of a broad low-level swirl, with a decaying area of convection that has become increasingly detached from the circulation in the southwestern quadrant. The 0000 UTC subjective Dvorak estimates were both T2.5/35 kt from SAB and TAFB, while the most recent UW-CIMSS SATCON estimate was a bit higher at 38 kt. Given the degradation in convective structure from the previous advisory, the initial intensity is lowered to 35 kt for this advisory. After an earlier westward jog, the initial motion has resumed a more northwest heading at 305/11 kt. The track philosophy remains unchanged, as Kevin's broad circulation will continue to be steered to the west-northwest or northwest along the southwestern side of a deep tropospheric ridge for the next 48-60 hours. The latest track forecast is essentially an update from the previous advisory, and lies nearly along the HCCA consensus aid, just a shade west of the previous forecast track. As Kevin continues to move into cooler sea-surface temperatures and a drier air-mass, the storm is expected to continue weakening as the remaining organized convection ceases. The latest intensity forecast weakens Kevin to a tropical depression tomorrow morning and degenerates the cyclone into a remnant low by Friday morning, in good agreement with the model guidance that shows the remaining convection dissipating by tomorrow night. FORECAST POSITIONS AND MAX WINDS INIT 12/0300Z 22.0N 118.2W 35 KT 40 MPH 12H 12/1200Z 22.9N 119.9W 30 KT 35 MPH 24H 13/0000Z 24.1N 122.3W 30 KT 35 MPH 36H 13/1200Z 25.5N 124.6W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 14/0000Z 27.1N 126.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 60H 14/1200Z 28.7N 128.2W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 15/0000Z...DISSIPATED $$ Forecaster Papin/Stewart NNNN
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