What do you know about typhoon level? What is the basis of grading?

We often see the sudden attack of typhoons in some areas notified by radio news, and also report information such as typhoon level. In fact, we hear that there are more typhoons in coastal areas in China, because there are many typhoons in coastal areas. Just this year, several typhoons hit, including Taiwan Province Province, Shanghai, Hangzhou, Zhejiang and other regions, all of which were affected by typhoons.

I. Typhoon

However, we should know that typhoon is a natural phenomenon and a meteorological name. Typhoon is a kind of tropical cyclone, that is, it occurs mostly in tropical areas. Tropical cyclone is a low-pressure vortex that occurs in tropical and subtropical oceans. This is a powerful and far-reaching tropical weather system. Of course, our tropical cyclones in the South China Sea and the Northwest Pacific can be classified according to the maximum average wind and rain near the bottom center, and the distribution of general grades is based on reality. Distribution of grading system in China.

Second, the typhoon level

At present, typhoons are divided into 6-7 grades, which belong to the maximum wind speed of tropical depression. The maximum wind speed of tropical storms is 8-9, and the wind speed is generally high. There is also a strong tropical storm where the wind near the center reaches about 10- 1 1, and then the wind at the typhoon center reaches 12-65438. The next strong typhoon can reach 14~ 15, and the last one is a super typhoon, which is above 16 and generally lasts until 17. The wind is very strong.

Third, the basis for judging the typhoon level

In fact, according to the national and corresponding meteorological analysis data, the judgment of typhoon level is based on tropical cyclones, according to the maximum average wind force near the bottom center, that is, if a typhoon appears, there is a maximum rotation and a sharp maximum rotation honey level in its center. The higher the wind grade of the first-class center, the lower the wind grade, which is also a better judgment phenomenon.