Although no official minimum pressure readings were taken in the area at the time, the tropical cyclone peaked in wind-based intensity at 18:00 UTC on September 16 with sustained winds of 150 mph , near the uppermost limit of the modern-day ranking Category 4.Atlantic hurricane best track With this strength the hurricane passed near the Turks and Caicos Islands, though its intensity at the time was based on the extent of damage there as any measurement device was knocked out by the damaging winds.