Issued at 900 AM CST Wed Oct 02 2024
000 WTPZ41 KNHC 021436 TCDEP1 Tropical Depression Eleven-E Discussion Number 4 NWS National Hurricane Center Miami FL EP112024 900 AM CST Wed Oct 02 2024 First light visible imagery and a GMI microwave overpass during the night show that the center of Tropical Depression Eleven-E is again a little to the southwest of the previous track. While the system is part of a large area of convection, the convection is generally poorly organized, and there has been little change in the various satellite intensity estimates since the last advisory. Based on this, the initial intensity remains 30 kt. The track forecast is of low confidence. Satellite imagery and model analyses indicate that the depression is currently absorbing or merging with the vorticity of the EP97 disturbance, and this has resulted in the system center moving slowly southwestward during the past 6-12 h. The models have diverse solutions for the subsequent track, with the GFS and Canadian taking the cyclone northward into eastern Mexico, while the UKMET forecasts a west-northwestward motion offshore parallel to the coast and the ECMWF forecasting the system to dissipate over water. The new forecast track is a compromise between the the GFS and UKMET forecast and shows the center making landfall between 36-48 h in the current Tropical Storm Warning area. This forecast has some significant changes in direction and speed from the previous forecast, and additional adjustments may be necessary later today and tonight. Regardless of exactly where the cyclone tracks, it is expected to be in an environment of moderate to strong easterly shear through at least 48 h. This should limit the intensification, and the forecast peak intensity of 40 kt remains at the upper edge of the intensity guidance. The main impact from this system is expected to be heavy rainfall, which could lead to flooding and mudslides over portions of southern Mexico and western Guatemala. KEY MESSAGES: 1. The depression is forecast to become a tropical storm before it reaches the coast of southern or southeastern Mexico. A Tropical Storm Warning remains in effect for portions of the southern coast of Mexico. 2. Tropical Depression Eleven-E will likely bring heavy rainfall to portions of southern Mexico and Guatemala this week. Flooding and mudslides, especially in areas of steep terrain, are possible, especially from western Guatemala into portions of the Mexican states of Chiapas, Oaxaca, Veracruz, Tabasco and coastal Guerrero. FORECAST POSITIONS AND MAX WINDS INIT 02/1500Z 14.9N 95.8W 30 KT 35 MPH 12H 03/0000Z 14.8N 96.1W 35 KT 40 MPH 24H 03/1200Z 14.9N 96.6W 40 KT 45 MPH 36H 04/0000Z 15.3N 97.0W 40 KT 45 MPH 48H 04/1200Z 16.0N 97.5W 30 KT 35 MPH...INLAND 60H 05/0000Z 16.4N 98.0W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 05/1200Z...DISSIPATED $$ Forecaster Beven