Typhoon is a tropical cyclone. Tropical cyclone is a low-pressure vortex that occurs on the surface of tropical or subtropical ocean, and it is a powerful and profound "tropical weather system".
Tropical cyclones in the South China Sea and the Northwest Pacific Ocean in China are divided into six grades according to the maximum average wind speed near the bottom center. The winds near the center 12 and above are collectively called typhoons.
Broadly speaking, the word "typhoon" is not the intensity of tropical cyclones. Tropical cyclones (including tropical storms, severe tropical storms and typhoons defined by the World Meteorological Organization) with sustained wind speeds exceeding17.2m per second are called typhoons.
On informal occasions, "typhoon" even directly refers to the tropical cyclone itself. When a tropical cyclone in the northwest Pacific reaches the intensity of a tropical storm, it is named. The name is provided by Typhoon Committee 14 of the World Meteorological Organization.
According to the statistics of the Typhoon Warning Center of the US Navy, the number of typhoons in the Northwest Pacific and South China Sea 1959 to 2004 is related to the month, with an average of 26.5 typhoons generated each year. The month with the most typhoons is August, followed by July and September.
In July, 2020, there was no typhoon in the northwest Pacific and South China Sea, which was the first "empty typhoon" in July in China since 1949.
On April 30th, 20265438 10, six new names of typhoons, such as Ginkgo, Jiangdong, Lagasa and Lanjiao Lake, were officially announced after consultation by China Meteorological Bureau, Macau Geophysical and Meteorological Bureau, Hong Kong Observatory and Taiwan Province Meteorological Department, and passed by the resolution of the 53rd session of the Typhoon Committee of ESCAP/WMO.