What are the degrees of sandstorm weather? How to express the degree of sandstorm weather?

1, indicating that there are five levels of sandstorm weather: floating dust, sand blowing, sandstorm, strong sandstorm and extra-strong sandstorm. It is mainly divided according to the horizontal visibility of the ground at that time in sandstorm weather, and the weather phenomena caused by different sandstorm grades are different.

2. Floating dust: When there is no wind or the average wind speed is less than or equal to 3m/s, dust floats in the air, making the horizontal visibility less than 10km.

3. Sand blowing: When the wind blows up the dust on the ground and makes the air quite turbid, the weather phenomenon with horizontal visibility between 1 km and1km is sand blowing.

4. Sandstorm: When strong winds blow up dust on the ground and make the air very turbid, the weather phenomenon with horizontal visibility less than 1 km is sandstorm.

5. Strong sandstorm: When strong winds blow up dust on the ground, the air is very turbid, and the weather phenomenon with horizontal visibility less than 500 meters is a strong sandstorm.

6. Extra-strong sandstorm: Strong winds blow up dust on the ground, and the air is particularly turbid. The weather phenomenon with horizontal visibility less than 50 meters is extra-strong sandstorm.