Cyclones form when warm, moist air over the ocean rises, creating a low-pressure area. Surrounding air rushes in to fill the void, and the Earth's rotation causes the air to spiral. As the warm air continues to rise and cool, it forms clouds and thunderstorms. The process intensifies, leading to the development of a cyclone. Factors like sea surface temperature and wind patterns play a critical role in determining the strength and trajectory of the cyclone.