 Later on November 30, the depression further intensified into a tropical cyclone and was given the name Trina by the FMS. At this time, gale-force winds were only present in one quadrant of the storm. In previous years, gale-force winds had to be present all around the center for the system to receive a name. Upon receiving its name, Trina attained its peak intensity with winds of 65 km / h (40 mph) along with a barometric pressure of 995 mbar (hPa; 29.38 inHg). Remaining nearly stationary, Trina succumbed to strong wind shear during the evening of November 30. The JTWC only classified Trina as a tropical storm for 12 hours before downgrading the system and issuing their final advisory early on December 1. However, according to the FMS, the system retained gale-force winds through December 2, by which time it was situated about 70 km (45 mi) northwest of Mangaia. Now significantly displaced from any convective activity, the remnants of Trina persisted in the same general area for several more days before completely dissipating.
