For a tropical disturbance to become a full hurricane, it must have all of the following EXCEPT:
Winds over 74 mph
While winds over 74 mph characterize a hurricane, they are not a prerequisite for a disturbance to develop into a hurricane. The disturbance must first develop under the right conditions, which include warm ocean waters, high humidity, and low wind shear. The winds reaching hurricane strength are a result of that development, not a requirement for the initial transformation.