What are the naming rules for typhoons?

The naming, definition, classification methods of tropical cyclones, and the determination of the center position are different in different countries and methods. Even in the same country, they are not exactly the same between different meteorological stations. Therefore, various misunderstandings often occur, resulting in confusion in use.

In order to change this situation, the meteorological department adopted the method of naming typhoons. At the end of World War II, the United States first determined four groups of girl names starting with English letters (except Q, U, X, Y, and Z) to name Atlantic hurricanes. Each group is ordered alphabetically. For example, the first group: Anna, Blanche, Camil, etc., until Wenda; the second group: Alma, Becl, Cella Asia) and so on, until Wilna (Wilna); the third group and the fourth group are also named according to A to W. When the aircraft detects a typhoon, it will be named according to the order of appearance. The first one will be named Anna, the second one will be named B1anche...etc. When the first group of names is used up, the first name starting from the second group A will be used. The name of the first typhoon in the second year is followed by the name of the last typhoon in the previous year, and the cycle continues. The number of typhoons occurring in any one region in a year cannot exceed the total number of names in these four groups. In the Northwest Pacific, where the most typhoons occur in the world, there are no more than 50 in a year. Therefore, it is impossible for each region to have duplicate names in the same year. Of course, the names of typhoons recur in different years. Therefore, in front of the typhoon name. Be sure to indicate the year to show the difference.

my country began to adopt the force and method for numbering typhoons in 1959. Whenever typhoons form or invade within the Pacific and South China Sea areas west of 150 degrees east longitude and north of the equator, they will be numbered in sequence according to the order in which they appear. For example, the first typhoon in 1999 was coded as 9901, the second typhoon was coded as 9902... and so on.

This method of numbering typhoons has been adopted by meteorological observatories in many countries and regions. Some countries take into account the long-standing international habit of using English names for typhoons in addition to numbers. The English name of the typhoon is also indicated.

Girchi’s answer acceptance rate: 21.5 2008-08-03 00:20 Report

The actual naming work is left to the Japan Meteorological Agency (Tokyo Regional Professional Meteorological Center) Responsible. Whenever the Japan Meteorological Agency determines a tropical cyclone in the northwest Pacific or the South China Sea to have tropical storm intensity, it is given a name based on the list and a four-digit number. The first two digits in the number are the year, and the last two digits are the order in which tropical storms were generated in that year. For example, 0312, which is Tropical Storm No. 12 in 2003 (when it reaches severe tropical storm intensity, it is called Severe Tropical Storm No. 12; when it reaches typhoon intensity, it is called Typhoon No. 12), its English name is KROVANH. The Chinese name is "Kerowang"; 0313 is Tropical Storm No. 13 in 2003, the English name is DUJUAN, and the Chinese name is "Dujuan". The Chinese name of the typhoon was determined by the my country Meteorological Administration after consultation with the meteorological departments of Hong Kong and Macao.