Tropical Cyclone Discussion
954 WTPZ41 KNHC 141456 TCDEP1 Tropical Storm Trudy Discussion Number 5 NWS National Hurricane Center Miami FL EP212026 900 AM CST Wed Oct 14 2026 Trudy continues to gradually become better organized. Geostationary satellite images show a cold central convective area, with the low-level center likely underneath the western portion of this convection, although there have only been a couple of microwave passes over the past 6 to 12 hours, so confidence in the initial position is still not particularly high. Trudy also has loosely connected outer curved convective bands to the northeast and west. The latest subjective Dvorak estimate from TAFB is 3.5/55 kt, while objective estimates from UW-CIMSS have been ranging from 36 to 45 kt. The intensity is increased to 50 kt for this advisory, since the latest satellite images show continued gradual improvement in the convective organization. Trudy has been moving toward the west-northwest, or 290/11 kt, to the south of a mid-level ridge that extends over central Mexico. However, the ridge is expected to weaken by tomorrow, as Trudy moves closer to Hurricane Simon. The two tropical cyclones, which are currently about 700 n mi apart, are forecast to be within 500 miles of each other by hour 36, possibly close enough to influence each other's steering. By Thursday, increasing mid- to upper-level troughiness in the west-central Gulf of America and steering from potential interaction with Simon should cause Trudy to turn north-northwestward, and possibly northward for a time Thursday night or Friday. As Simon finally moves northwest and weakens late in the forecast period, it should allow the ridge to build back in and induce Trudy to make a leftward turn back toward the northwest. There remains significant track spread among the models, but there has been an overall rightward shift in the model guidance, mainly during the first 60 to 72 h of the forecast, so the new NHC track forecast is well to the east of the previous one through 72 h. The NHC track forecast is slightly to the west of the HCCA and GDMI at 36-72 h. At day 5, the NHC forecast is slightly south of the previous one, but well to the north of the latest GDMI, HCCA, and TVCN, but the forecast that far out is highly uncertain. Environmental conditions continue to look quite favorable along Trudy's track through the next 60 hours, and the NHC forecast continues to call for rapid intensification. By hour 72, there is increasing confidence that Trudy will reach stronger southwesterly wind shear, which should induce significant weakening by days 4 and 5, regardless of how much land interaction Trudy incurs. The NHC intensity forecast is at the high end of the model guidance throughout the entire 5-day period, and is similar to the HCCA and Google DeepMind Ensemble Mean. NHC continues to call for Trudy to get close to the coast of Mexico as a major hurricane, and given the track uncertainty, residents of southwestern and west-central Mexico should continue to closely monitor the progress of Trudy, and be ready to possibly implement their hurricane plan. Key Messages: 1. Trudy is forecast to be a major hurricane as it approaches the coast of southwestern and west-central Mexico late this week and into the weekend. There is an increasing risk of wind, rain, and storm surge impacts, and watches could be required for a portion of these areas later today or tonight. FORECAST POSITIONS AND MAX WINDS INIT 14/1500Z 11.5N 99.5W 50 KT 60 MPH 12H 15/0000Z 12.1N 100.4W 60 KT 70 MPH 24H 15/1200Z 12.9N 101.2W 75 KT 85 MPH 36H 16/0000Z 13.7N 101.7W 90 KT 105 MPH 48H 16/1200Z 14.6N 102.0W 105 KT 120 MPH 60H 17/0000Z 15.5N 102.4W 115 KT 130 MPH 72H 17/1200Z 16.5N 103.0W 115 KT 130 MPH 96H 18/1200Z 18.4N 105.0W 95 KT 110 MPH 120H 19/1200Z 19.9N 106.9W 75 KT 85 MPH