What does the three bends in the weather forecast mean?
The three curved icons in the weather forecast are blowing sand.
Blowing sand is caused by local or nearby dust being blown up by the wind. Visibility dropped significantly, and the sky was cloudy and yellow when it appeared. In the north, it is easy to appear in spring. The wind is strong during blowing sand weather, which affects the visibility between 1 km and 10 km.
Sand and dust weather is a disastrous weather phenomenon that is prone to occur in northern China (especially the northwest region) in spring. This kind of weather can be divided into three levels according to the level of horizontal visibility, namely floating dust, blowing sand and sandstorm.
Blowing sand and sandstorms are caused by the dust and sand on the surface of a specific area being blown up by the violent activity of atmospheric currents. Its common characteristics are significantly reduced visibility and turbid sky. The two mostly appear when cold air passes through in northern spring. The difference is that the visibility affected by blowing sand weather is about 1 km to 10 km. The visibility in sandstorm weather is even less than 1 kilometer.
Extended information:
As a kind of wind and sand disaster, blowing sand does not occur in all windy places. It can only occur in areas with arid climate and sparse vegetation. Blowing sand. Sand blowing mostly occurs from April to May every year. Mainly distributed in the western and northern regions, Inner Mongolia, Tibet, and Xinjiang are the most serious.
Defense Guide
1. The government and relevant departments should do a good job in preventing strong winds according to their responsibilities.
2. Close doors and windows, reinforce hoardings, scaffoldings, billboards and other structures that are easily blown by the wind, properly place outdoor items that are easily affected by strong winds, and cover building materials.
3. Pedestrians should be careful not to ride bicycles as much as possible, and do not stay under billboards, temporary structures, etc. when it is windy.
4. Relevant departments and units pay attention to forest fire prevention.