{"id": "1218563552271728643", "title": "Tropical Cyclone Discussion", "adv_date": "2026-10-14T03:00:00Z", "msg": "280\nWTPZ41 KNHC 140254\nTCDEP1\n \nTropical Storm Trudy Discussion Number   3\nNWS National Hurricane Center Miami FL       EP212026\n900 PM CST Tue Oct 13 2026\n \nTropical Storm Trudy has a fairly large circulation with several\nouter banding features propagating outward in a manner consistent\nwith a diurnal pulse. Despite the large apparent size, which dwarfs\nnearby Hurricane Simon, the core of Trudy is analyzed to be somewhat\ncompact with tropical-storm-force winds limited to the northern\nsemicircle of the circulation and no farther than 60 n mi from the\ncenter. It was a bit difficult to analyze the initial center\nposition for this advisory. Late arriving Oceansat-3 scatterometer\ndata and AMSR3 microwave imagery suggest that the center of Trudy\nmay have been somewhat north of the best track position earlier\ntoday. The objective and subjective satellite fixes also range by\nseveral degrees. The initial position blends these available data\nwith the last few visible satellite images of the day and maintains\ncontinuity with the previous forecast track. Trudy's intensity was a\nmuch easier analysis, and is increased to 40 kt for this advisory,\nwhich blends the objective satellite intensity estimates from\nUW-CIMSS, the subjective Dvorak classification from TAFB, and recent\nshort-term trends in the satellite presentation of the system.\n \nThe track forecast is difficult and uncertain, with higher than \nnormal spread in the guidance from 72 h onward. The initial motion \nof Trudy is northwestward (320/9 kt), and a general northwestward to \nwest-northwestward motion is forecast through 72 hr as the cyclone \nis steered by a mid-level ridge over the southern United States. As \npreviously stated, the track forecast is more uncertain than usual \nby 72 h as Trudy arrives into a region with weak steering flow \nbetween the retreating mid-level ridge and an approaching trough \nover the western United States. The deterministic global models are \nsignificantly slower than the HFIP Corrected Consensus Aid (HCCA), \nGoogle DeepMind (GDMI), the European Centre's AIFS, and the AI-GFS. \nThe new track forecast closely follows HCCA and GDMI, which have \nbeen the best-performing track forecast aids this season. Compared \nto the previous forecast, the new NHC track is faster and nudged \neast of the previous one, especially at and beyond 72 h. This brings \nTrudy inland over western Mexico later this weekend with the cyclone \nemerging in the southern Gulf of California by early next week. If \nTrudy tracks farther inland over western Mexico, the circulation may \nnot survive and rapidly dissipate inland. Regardless of the exact \ntrack, Trudy is expected to approach the coast of Mexico as a major \nhurricane later this week.\n \nThe center of Trudy appears nestled under a small and incipient\ncentral dense overcast. While a short-term trend on satellite, this\nchange in organization of a small inner core combined with extremely\nfavorable environmental conditions supports an aggressive intensity\nforecast that explicitly depicts rapid intensification and makes\nTrudy a hurricane within 24 h. This is also supported by some of the\nstatistical rapid intensity guidance. The new intensity forecast is\nadjusted slightly above the previous one, in agreement with GDMI and\nHCCA, our best performing intensity guidance this season. GDMI,\nHCCA, and the NHC forecast are on the higher end of the intensity\nguidance, though this appears the most likely solution based on the\nofficial track forecast. The hurricane regional models, which can\nbe more skillful for intensity than the coarser global models, use\nthe GFS for initialization and boundary conditions. For this cycle,\nthe GFS track is unrealistic, and the hurricane regional models\nappear to succumb to this and provide an outlier (weaker) outcome.\nAt 120 h, the intensity forecast shows Trudy remaining a hurricane\nafter exiting Mexico, though this intensity will be highly\nsensitive to the amount of land interaction.\n \nKey Messages:\n \n1. Trudy is forecast to be a major hurricane as it approaches the\ncoast of southwestern and west-central Mexico late this week and\ninto the weekend. There is an increasing risk of wind, rain, and\nstorm surge impacts, and watches could be required for a portion of \nthese areas on Wednesday.\n \n \nFORECAST POSITIONS AND MAX WINDS\n \nINIT  14/0300Z 11.2N  97.0W   40 KT  45 MPH\n 12H  14/1200Z 11.8N  98.6W   50 KT  60 MPH\n 24H  15/0000Z 12.6N 100.0W   65 KT  75 MPH\n 36H  15/1200Z 13.5N 100.9W   80 KT  90 MPH\n 48H  16/0000Z 14.3N 101.5W  100 KT 115 MPH\n 60H  16/1200Z 15.2N 101.9W  110 KT 125 MPH\n 72H  17/0000Z 16.3N 102.5W  115 KT 130 MPH\n 96H  18/0000Z 19.0N 104.4W  115 KT 130 MPH\n120H  19/0000Z 21.0N 106.0W   75 KT  85 MPH\n \n"}