An upper-level trough forced Trudy to move northwards, increasing the risk of hurricane conditions to Baja California residents. The same trough caused an unfavorable environment that caused Trudy to weaken considerably. At that time, dynamically based numeral models forecasted Trudy to move northwards over Baja California and make landfall there. Authorities closed five ports on Baja California and the Pacific Ocean port of Mazatlán on October 22 as Hurricane Trudy was approaching the Mexican coast with gusts of up to . However, the trough progressed eastwards and was replaced by a ridge, sparing a landfall, but still causing locally heavy rainfall and high waves. Socorro Island reported hurricane-force winds for more than 7 hours. Moving away from land, Trudy then started to re-intensify, developing an unusually large eye of nearly in diameter. However, another deep trough approached Trudy and pulled the hurricane northwards, shearing it at the same time. Trudy dissipated on November 1 at 1800 UTC. Its remnant moisture spread over parts of Mexico and the United States.