Tropical Depression Fifteen-E Forecast Discussion
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000 WTPZ45 KNHC 140235 TCDEP5 Tropical Depression Fifteen-E Discussion Number 2 NWS National Hurricane Center Miami FL EP152026 800 PM PDT Sun Sep 13 2026 The depression has not become better organized since earlier today. Visible satellite images show that the well-defined low-level center remains displaced and exposed to the northwest of the main area of deep convection. Using measurements with the Dvorak shear pattern, the intensity of the cyclone is estimated to be below tropical storm strength. Thus the current intensity estimate remains 30 kt, which is in agreement with earlier scatterometer observations. Water vapor imagery shows that the system is currently being affected by moderate vertical wind shear and relatively dry mid-tropospheric air. Global model guidance indicates that these marginal to unfavorable conditions are likely to persist for the next few days. Therefore, only slight short-term strengthening is called for and the system is expected to begin weakening in a day or so, with the cyclone degenerating into a remnant low in 96 hours or sooner. This is consistent with simulated satellite imagery depicted by the ECMWF model run. The depression is moving a little south of due west with an initial motion of around 260/9 kt. A mid-level ridge to the north of the system should keep the cyclone on a mainly westward track with a slightly increase in forward speed for the next 72-96 hours. The official track forecast is similar to, but not quite as fast as, the latest Google DeepMind and corrected model consensus, HCCA, guidance. FORECAST POSITIONS AND MAX WINDS INIT 14/0300Z 17.0N 118.3W 30 KT 35 MPH 12H 14/1200Z 16.8N 119.6W 35 KT 40 MPH 24H 15/0000Z 16.5N 121.4W 35 KT 40 MPH 36H 15/1200Z 16.3N 123.4W 35 KT 40 MPH 48H 16/0000Z 16.0N 125.8W 30 KT 35 MPH 60H 16/1200Z 15.7N 128.3W 30 KT 35 MPH 72H 17/0000Z 15.4N 130.8W 30 KT 35 MPH 96H 18/0000Z 15.5N 135.5W 25 KT 30 MPH...POST-TROP/REMNT LOW 120H 19/0000Z...DISSIPATED $$ Forecaster Pasch