How to divide the gale level?

A strong wind level refers to a wind with a wind force of 8 or above. According to China's meteorological observation service, the wind whose instantaneous wind speed reaches or exceeds 17m/s (or the wind speed reaches or exceeds Grade 8 visually) is regarded as strong wind. A windy day is called a windy day. In China's weather forecast business, Beaufort's 6 (the average wind speed is 10.8- 13.8 m/s) and above are defined as strong winds.

The specific classification of wind power levels is as follows:

1, zero wind is also called no wind.

2. The secondary wind is called small wind, the leaves are slightly noisy, and the face feels windy.

3, the fourth grade wind is called breeze. When there is a four-level wind, the twigs of trees will shake, and at the same time, they can also blow up dust and paper on the ground.

4. The six-level wind is called strong wind, and the six-level wind will show that the branches are shaking, the wires are whirring, and it is difficult to walk with an umbrella.

The 8-level wind is called strong wind, which can break the twigs of trees, and the resistance of people walking in the wind is also relatively large.

6. A force ten wind is called gale, which is rare on land. Trees can be pulled up, and the damage to buildings is serious.

7. Winds above12 are called typhoons or hurricanes. Winds above 12 are relatively destructive, but they are not common.