Typhoon (English: 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".

In China, tropical cyclones in the South China Sea and the Northwest Pacific are divided into six grades according to the maximum average wind speed near the center of the bottom layer, and those whose wind reaches 12 or 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 of17.2m per second are called typhoons.

On informal occasions, "typhoon" even directly refers to the tropical cyclone itself.

When the tropical cyclone in the northwest Pacific reaches the intensity of tropical storm, the name is provided by the Typhoon Committee of the World Meteorological Organization 14 countries and regions.

Typhoons and hurricanes are tropical cyclones, but they happen in different places and have different names. It is called a typhoon in the west of the North Pacific Ocean and the west of the international international date line, including the South China Sea and the East China Sea.

Tropical cyclones in the Atlantic Ocean or the eastern North Pacific Ocean are called hurricanes, which means hurricanes in the United States and typhoons in the Philippines, China and Japan. If it is in the southern hemisphere, it is called a whirlwind. Different places, times and names.