Tropical cyclogenesis involves the development of the warm-core cyclone, caused by significant convection inside a favorable atmospheric setting. There are half a dozen main requirements regarding tropical cyclogenesis: completely warm sea surface area temperatures, atmospheric lack of stability, high humidity within the lower to middle levels of the troposphere, enough Coriolis force to build up a low stress center, a preexisting lower level focus or even disturbance, and lower vertical wind shear.