How Does a Hurricane Form?

Warm air moves up from above the ocean to create an area of low pressure. As more warm high-pressure air moves into the area, it rotates to form clouds. This system of high-pressure and low-pressure air forms cumulonimbus clouds that produce hurricanes, explains the National Aeronautics and Space Association.

The formation of hurricanes occurs due to the influx of new high-pressure of air that feeds from the ocean’s warm air and availability of water. As the air decreases in temperature, it forms clouds. Once the rotation reaches at least 74 miles per hour, scientists deem the storm system a hurricane. These storms are only hurricanes in the Atlantic Ocean and Eastern Pacific Ocean. In every other area on Earth, hurricanes are tropical cyclones.