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| #1201068 (Received by flhurricane at: 4:48 AM 30.Sep.2024) TCDAT1 Tropical Depression Joyce Discussion Number 12 NWS National Hurricane Center Miami FL AL112024 500 AM AST Mon Sep 30 2024 Joyce`s center is mostly exposed, with only a few cells of deep convection forming intermittently within the circulation. Joyce continues to experience strong southwesterly vertical wind shear due to a large upper-level trough over the central Atlantic. The current intensity is held at 30 kt which is similar to the objective AIDT and DPRINT estimates from UW-CIMSS. This may be a generous estimate, however, given the current appearance of the system. The cyclone has not moved much with only a slightly south of westward drift noted, and the current motion estimate is 260/2 kt. It seems that the weakened system is now being steered primarily by the low-level flow. Therefore the official track forecast is slower than the previous predictions. This is similar to the motion implied by the latest ECMWF forecast fields which show a very weak system drifting generally northward for the next day or two. Given the lack of convection, the environment of dry air, and the expectation of persistent shear, Joyce should soon degenerate into a remnant low. The official intensity forecast is similar to the previous one. The remnant cyclone should dissipate in 48-60 hours if not sooner. FORECAST POSITIONS AND MAX WINDS INIT 30/0900Z 22.1N 49.7W 30 KT 35 MPH 12H 30/1800Z 22.8N 49.8W 30 KT 35 MPH...POST-TROP/REMNT LOW 24H 01/0600Z 23.6N 49.8W 30 KT 35 MPH...POST-TROP/REMNT LOW 36H 01/1800Z 24.7N 49.8W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 02/0600Z 25.8N 49.5W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 02/1800Z...DISSIPATED $$ Forecaster Pasch |
