Here's why this happens:
* Rotation of the Earth: The Earth's rotation causes the air to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This is called the Coriolis effect.
* Low Pressure: Tropical cyclones form over warm ocean waters, creating an area of low pressure at their center. Air flows inward toward this low pressure, spiraling due to the Coriolis effect.
* Eye of the Storm: The calm center of the storm, known as the eye, forms as air converges and rises. The descending air in the eye creates a relatively clear and calm area.
It's important to note that the spiral pattern is not perfectly uniform and can vary in intensity depending on the strength and stage of the cyclone.