Why is the wind not lower than level 2 in the weather forecast?

There must be. The level of wind is determined according to the influence of wind on ground objects. In meteorology, at present, it is generally divided into twelve grades according to the magnitude of wind. Level 0 wind is also called no wind. Level 2 wind is called breeze, the leaves are slightly noisy, and people feel windy. Level 4 wind is called breeze, and the twigs of trees shake, which can blow up dust and paper on the ground. 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 8-level wind is called gale, the twigs of trees can be broken, and people walk in the wind with great resistance. 10 wind is called gale, which can pull up trees and seriously damage buildings. /kloc-winds above 0/2 are called hurricanes, which are extremely destructive.