A hurricane is a tropical storm that forms over the Atlantic ocean, Gulf of Mexico and the Eastern Pacific ocean. A Typhoon is when a tropical storm forms over the Western Pacific ocean. A hurricane maintains strength over warm water because, a hurricane forms over warm water for 1 and the warm water vapor builds its strength up. A hurricane looses its strength over land because, there is no warm water on the land surface. The way the categorize and name hurricanes are, they name the hurricane by alphabetic order. After that, in 1953 they changed it to only girl names. Then in 1979 the added male names to the list of names. Now we have six list of names that switch around every year. Sometimes if a hurricane is too bad or, caused a lot of damage or deaths it is retired from the list. Then they determine if the hurricane is a category 1, 2, 3, 4 or 5. For a hurricane to actually be a hurricane the wind speed has to be at least 74 mph.