Hurricane eye formation remains unexplained

The eye feature is common to all intense convective cyclones. Various mechanisms have been proffered to explain why and how these structural changes occur, but it is apparent from a review of the literature that the exact eye-formation mechanisms are either unknown or controversial. Early work on eye maintenance suggested that air is centrifuged out of the eye at low levels, thus driving central subsidence by mass continuity. This and succeeding proposed mechanisms have difficulty separating cause from effect. The key to adequately explaining eye formation is to determine what causes the convection to organize into the annulus.