What is the jingle for the classification of wind levels?

Level 1 light smoke drifts with the wind;

Level 2 light breeze blowing in the face;

Level 3 leaves moving and red flag display;

Fourth Level branches shook pieces of paper;

Five-level small trees swayed in the wind.

Level 6 has difficulty lifting an umbrella;

Level 7 has difficulty walking in the wind;

Level 8 winds blow branches off;

Level 9 Tiles flew off the roof;

Uprooting trees and knocking down houses at level 10;

Rarely seen at levels 11 and 2.

Extended information:

In weather forecasts issued by meteorological stations, you often hear this statement: the wind is turning from north to south, and the wind force is 2 to 3. The "level" here indicates the wind speed. At present, it is generally divided into twelve levels according to the strength of the wind: Level 0 wind is also called calm wind. Level 2 winds are called light breezes. There is a slight sound in the leaves, and people feel windy on their faces.

Level 4 winds are called gentle breezes. The twigs of the trees are shaking and can blow up dust and paper on the ground. Level 6 winds are called strong winds, big branches are swaying, power lines are whirring, and it is difficult to walk with an umbrella. Level 8 winds are called strong winds. The twigs of trees can be broken, and it is very difficult for people to walk against the wind. Level 10 winds are called strong winds, which can uproot trees and cause serious damage to buildings. Winds above level 12 are called hurricanes and are extremely destructive.

Wind force refers to the strength of the wind blowing on objects. Generally, the wind force is divided into 18 levels according to the various phenomena caused by the wind blowing on objects on the ground or water surface, with the minimum being level 0 and the maximum being level 17. Wind speed is the forward speed of the wind. The greater the air pressure difference between two adjacent places, the faster the air flows, the greater the wind speed, and the greater the power of the wind.

So wind force is usually used to express the size of the wind. The unit of wind speed is expressed in meters per second or kilometers per hour. When issuing weather forecasts, wind levels are mostly used.