{"id": "1219551293436362754", "title": "Tropical Cyclone Discussion", "adv_date": "2026-10-17T15:00:00Z", "msg": "392\nWTPZ41 KNHC 171438\nTCDEP1\n \nHurricane Trudy Discussion Number  17\nNWS National Hurricane Center Miami FL       EP212026\n900 AM CST Sat Oct 17 2026\n\nTrudy is slowly becoming better organized. The hurricane is \nproducing a large central dense overcast with cloud tops colder than \n-80C, and curved bands of overshooting tops in the CDO indicate an \neyewall is present underneath it. The various satellite intensity \nestimates are starting to increase, but not enough yet to support \nraising the intensity. Thus, the initial intensity remains 80 kt.\n\nThe hurricane is moving a little faster toward the northwest, 325/9 \nkt. A continued northwestward motion is expected during the next day \nor so as a weak low- to mid-level ridge builds over eastern Mexico. \nThis general motion should continue for the next 36 h or so, \nbringing the center of Trudy very close to the coast of west-central \nMexico. Thereafter, as Trudy weakens and becomes steered mainly by \nlow-level flow, a turn toward the west and west-northwest is \nexpected, taking the cyclone away from the coast. The new track \nforecast has only minor adjustments from the previous forecast, with \nthe center making its closest approach to the coast of Mexico around \n36-48 h.\n\nNow that Trudy is over water with a higher oceanic heat content, \nsome strengthening is possible. However, moderate vertical shear, \ndry air entrainment, and increasing land interaction could limit how \nmuch strengthening may occur. After 24 h or so, increasing \nsouthwesterly shear and decreasing mid-level moisture near the \ncyclone are likely to cause steady to rapid weakening even when the \ncenter would be moving away from the coast of Mexico. Current \nexpectations are that the system will stop producing convection \nbetween 72-96 h and decay to a remnant low pressure, and the global \nmodels forecast the circulation to weaken to a trough by 120 h. The \nnew intensity forecast has some tweaks from the previous forecast, \nand it lies near the upper edge of the intensity guidance envelope.\n \n \nKEY MESSAGES:\n \n1. Trudy could strengthen some during the next 12 hours or so as it \napproaches the coast of southwestern and west-central Mexico this \nweekend, bringing an increasing risk of storm surge, damaging winds, \nand flooding rain. Hurricane Warnings and Watches, as well as \nTropical Storm Warnings and Watches, are currently in effect for \nportions of the coast, and additional watches and warnings may be \nrequired.\n \n2. Heavy rainfall associated with Trudy will impact the southwest \nMexican coast between Guerrero and Nayarit through the weekend. This \nrainfall may produce life-threatening flooding and mudslides this \nweekend along and near the southwest Mexican coast in Michoac\u00e1n, \nColima, and Jalisco, especially in areas along steep terrain.\n \n3. Large swells are affecting portions of the coast of southwestern\nMexico and will spread northward through the weekend, causing\nlife-threatening surf and rip current conditions.\n \n \nFORECAST POSITIONS AND MAX WINDS\n \nINIT  17/1500Z 16.6N 103.9W   80 KT  90 MPH\n 12H  18/0000Z 17.7N 104.8W   90 KT 105 MPH\n 24H  18/1200Z 19.1N 105.7W   90 KT 105 MPH\n 36H  19/0000Z 20.1N 106.4W   85 KT 100 MPH\n 48H  19/1200Z 20.7N 107.0W   65 KT  75 MPH\n 60H  20/0000Z 20.9N 107.5W   45 KT  50 MPH\n 72H  20/1200Z 20.9N 108.2W   35 KT  40 MPH\n 96H  21/1200Z 21.7N 109.4W   25 KT  30 MPH...POST-TROP/REMNT LOW\n120H  22/1200Z...DISSIPATED\n \n"}