An upper-level trough near the Greater Antilles continued to provide westerly shear that briefly stalled the development, but the system's strong convection persisted. A break in the shear on November 15 enabled the storm to briefly strengthen. Post season analysis showed during this period the system reached tropical storm-status and should have been christened "Gamma", but as this was not seen at the time, the storm remained classified Tropical Depression Twenty-Seven. A deeplayered subtropical high pressure ridge over the southwestern Atlantic Ocean and Gulf of Mexico propelled the system westward across the Caribbean at more than and the storm's upper circulation was entirely separated from its deep convection and low level circulatory center. The NHC, believing that the system was dissipating, announced that it was issuing its last advisory on November 16. Soon after, the system slowed down on November 17.