What is the most destructive force?

Answer 1

The eye-wall of the hurricane is definitely the most destructive force of the hurricane. The eye-wall is, as the name suggests, the wall of the eye.

At the surface, the winds are rushing towards the center of a hurricane -- forcing air upwards at the center. The coriolis force acts on these surface winds, and in the northern hemisphere, the deflection is to the right. The convergence at the eye wall is so strong here that the air is being lifted faster and with more force here than any other location of the hurricane. Thus, the moisture transport from the ocean and subsequent latent heat production is maximized.