Are Hurricanes are named by the national weather service?
Hurricanes that occur in the Atlantic or eastern Pacific are named by the National Hurricane Center, a division of the National Weather Service.
The Weather Channel has come up with a naming system for winter storms. Like hurricane names, they are sorted alphabetically, and as a new storm comes up, the Weather Channel chooses the next name on the list. These names are not official or valid, though, as the National Weather Service has explicitly stated that it will not recognize these names. Ultimately, only the National Weather Service and its branches have the authority to name storms.
Tornadoes are simply too numerous and happen too quickly to be named. In an average year the United States is hit by more than 1200 tornadoes. The National Weather Service would very quickly run out of names. By contrast, there are usually not much more than a dozen tropical storms or hurricanes in a given ocean basin in a year.
Not names of people like hurricanes and tropical storms have. Tsunami are usually named by the location of occurrence and/or the date. The only types of natural disasters that are named using a naming convention of people's names are tropical storms and cyclones, hurricanes, typhoons, and similar weather patterns.