Answers to questions I. List three things necessary for a hurricane to form. Hurricanes are formed over tropical oceans where there are warm waters, humid air , and converging winds .
Hurricanes start out as a group of storms that begin to rotate when they encounter converging winds.
A tropical disturbance is formed when an organized area of thunderstorms holds itself together for at least 24 hours. A storm becomes a hurricane when the wind speeds reach 74 miles per hour. In the Southwest Pacific Ocean and the Indian Ocean, hurricanes are known as cyclones. Most other areas of the world use the term hurricane. Hugo intensified significantly prior to crossing the Gulf Stream off the Southeast U.S. coast.