What is the highest level of wind?

12. The weather forecast in China generally adopts the classification method of 0- 12, that is, "Beaufort scale". The meteorological department also made an intuitive statement according to the degree of influence of wind on ground objects to judge the wind level.

Extended data:

Wind power refers to the strength of the wind blowing on an object. Generally speaking, according to various phenomena caused by wind blowing on objects on the ground or water surface, the magnitude of wind power is divided into 18, with the smallest being 0 and the largest being 17.

Wind speed is the forward speed of the wind. The greater the air pressure difference between two adjacent places, the faster the air flow, the greater the wind speed and the greater the wind force. Therefore, the magnitude of wind is usually expressed by wind power. The unit of wind speed is meters per second or kilometers per hour. When the weather forecast is released, the wind level is mostly used.

In daily life, it is easy for us to convert wind power into corresponding wind speed, that is, the distance of air flow per unit time, expressed in m/s, and its conversion formula can be used for reference: two, two to one, three plus one. Grades four to nine are not difficult to calculate, and the series is reduced by two times three. Ten to twelve are rare, so ten is easy to remember.

Ten-level wind speed is twenty-seven, with one more level every four levels. That is, the wind speed of the primary wind is equal to 1 m/s, the wind speed of the secondary wind is equal to 2 m/s, and the wind level of the tertiary wind plus 1 is equal to 4 m/s.

Subtract 2 from the sequence from 4 to 9 and multiply it by 3 to get the corresponding wind speed. The wind speed algorithm from 10 to 12 is the same. The wind speed of 10 is 27m/s, and then the wind speed of 1 1 is 3 1m/s by adding 4, and the wind speed of 12 is 35m/s. ..

The 0-level smoke column soared into the sky, and the 1 level smoke deviated with the wind.

Level 2 breeze blows the surface, level 3 leaves move the red flag exhibition,

Four-level branches shake flying paper, five-level small trees shake with leaves,

It is difficult to walk with an umbrella at level 6 and inconvenient to walk against the wind at level 7.

Grade 8 wind breaks branches, grade 9 roof tiles fly,

10 level uprooting trees and knocking down houses, which is rare on land.

References:

Baidu Encyclopedia-Level of Wind