How to classify the level of wind?

The classification of wind is based on various phenomena produced by wind blowing on objects on the ground or water surface. The wind power is divided into 13, with the lowest being 0 and the highest being 12.

Level 0 wind is also called no wind.

Level 2 wind is called breeze, the leaves are slightly noisy, and people feel windy.

The third-grade wind is called breeze, branches and leaves are swaying, and flags are fluttering in the wind.

Level 4 wind is called breeze, and the twigs of trees shake, which can blow up dust and paper on the ground.

Level 5 wind is called strong wind, the twigs with leaves sway, and there are small waves on the inland water surface.

The 6-level wind is called strong wind, the branches are shaking, the wires are whistling, and it is difficult to walk with an umbrella.

The 7-level wind is called gale, and the whole tree shakes, so it is inconvenient to walk in the wind.

The 8-level wind is called strong wind, the twigs of trees can be broken, and people walk against the wind with great resistance.

The 9-level wind is called gale, and the building is damaged (the chimney top and roof tiles move).

10 wind is called gale, which is rare on land. Trees can be pulled up and buildings are seriously damaged.

1 1 Wind is called storm, which is rare on land and will cause great damage.

Winds above 12 are called typhoons or hurricanes (typhoons in the Pacific Ocean), which are extremely destructive and rarely seen on land.

In nature, the wind sometimes exceeds 12, such as the wind in the center of a strong typhoon or the wind in a tornado, which may be much greater than 12, but the wind above 12 is rare, so the number of stages is generally not specified.

Main points of avoiding danger in windy weather

1. Try to reduce the number of people going out. If you want to go out, ride a bike as little as possible. Don't stay under billboards and temporary structures to avoid the wind.

2. If you are driving, you should immediately drive to the underground parking lot or shelter.

If you live in a tent, you should immediately put away the tent and take shelter from the wind in a solid house.

4. If you are on the water (such as swimming), you should immediately go ashore to avoid the wind; The ship should obey the command, immediately take shelter from the wind, seal the cabin, and put down the sail as soon as possible when sailing.

5. If you are already in a solid house, close the window carefully and stick a "meter" pattern on the window glass with tape to prevent the window glass from breaking; Stay away from windows to prevent strong winds from sweeping sand and breaking glass and hurting people.

6, in public places, should be evacuated to the designated place.