Cyclones form when warm, moist air over the ocean rises, creating a low-pressure area. Surrounding air rushes in to fill the void, and as it rises, it cools and condenses, forming clouds and releasing heat. This heat further fuels the system, causing it to grow. The Earth's rotation causes the system to spin, creating the characteristic circular motion of a cyclone. Favorable conditions such as warm sea surface temperatures and low wind shear are essential for cyclone development.