We already have a very good, and nearly complete, understanding of all the ingredients responsible for the formation of low pressure systems, as seen in Hurricanes.

But because a hurricane is quite a massive thing, a force of gravity (albeit quite weak) contributes to the contraction of the space occupied by a hurricane.

Similar to a galaxy, this force will contracts space and matter from both a hurricanes periphery as well as from its centre. It is of course only a weak contribution, but still important to understand.

This approach could explain the cause of the, so far very mysterious, clear, and sunny eye of a hurricane. At the eye matter (and nearby space) may be sucked out. This would also explain the eye wall, the area surrounding the hurricanes eye, and properly more.