The World Meteorological Organization retired no names used in the 1997 season.
The World Meteorological Organization defines this time period as 30 years.
Retired names, if any, will be announced by the World Meteorological Organization in the spring of 2014.
However, the World Meteorological Organization did not approve the request.
The World Meteorological Organization did not retire any names in 1994.
The World Meteorological Organization did not retire any names used in the 1984 season.
No names were retired, and this was announced by the World Meteorological Organization in the spring of 2007.
The classical time period is 30 years, as defined by the World Meteorological Organization.
The World Meteorological Organization says that by 2025 almost a billion people will face serious water shortages.
No names were retired by the World Meteorological Organization, therefore this list was used again in the 2009 season.