What does the weather forecast mean about Yang Sha?

Sand blowing is caused by local or nearby dust being blown by the wind. Visibility dropped significantly, and the sky was cloudy and yellow when it appeared. The north is easy to appear in spring. The wind is strong in sand-blowing weather, which affects the visibility between 1 km and1km. Sand blowing weather process: In the same weather process, sand blowing weather occurs in five or more countries in China weather forecast area at the same observation time.

Sandstorm weather is a disastrous weather phenomenon in northern China (especially in northwest China) in spring. This kind of weather can be divided into three levels according to the horizontal visibility, namely floating dust, sand blowing and sandstorm.

Sand blowing is because the wind blows up dust or sand on the exposed ground. The visibility of this weather is between 1 km and1km, which is called sand blowing weather. The difference between sand-blowing weather and dusty weather is that some dust is generated in situ and some is blown from other places.

The dust suspended in the atmosphere causes the horizontal visibility of the atmosphere to be less than 10 km.

The dust on the ground is blown up by the strong wind, which makes the air quite turbid, and the horizontal visibility is 1 ~ 10 km.

Dust storms and strong winds blow up the dust on the ground, making the air very turbid, and the horizontal visibility is less than 1 km. When the horizontal visibility is less than 500 meters, it is a strong sandstorm.