What is a typhoon?

Typhoon is a kind of tropical cyclone, which refers to the low pressure formed in tropical areas. It keeps spinning, accompanied by strong winds and heavy rain.

Tropical cyclones can be divided into four types according to the magnitude of wind near the center. The central wind force below 7 is called tropical depression, 8-9 is called tropical storm, 10 to 1 1 is called strong tropical storm, 12 and 12 are called typhoons. These four types of tropical cyclones often transform each other in the development process.

Only when a typhoon occurs in the western part of the North Pacific (west of the international international date line, including the South China Sea) is it called a "typhoon"; if it occurs in the Atlantic Ocean or the eastern part of the North Pacific, it is called a "hurricane".

Tropical cyclones are often accompanied by strong weather changes, such as strong winds, heavy rains, huge waves, storm surges and tornadoes, so tropical cyclones are one of the main disastrous weather systems. The rain brought by tropical cyclones can undoubtedly alleviate the drought and flood in extremely hot areas. A typhoon with a small diameter can bring about 3 billion tons of precipitation when landing. The climate in the equatorial region is hot. If the typhoon does not disperse this heat, the tropics will be hotter, the frigid zone will be colder and the temperate zone will disappear from the earth. There are too many typhoons to do, but there are no typhoons.