What do the three bends in the weather symbol mean?

Sanwan is a symbol of sand blowing weather: sand blowing is due to the 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.

Dust weather is divided into four categories: floating dust, sand blowing, sandstorm and strong sandstorm.

When sandstorm occurs, it will cause the air quality to decline, seriously affect people's daily life and health, and also have a certain impact on the ecological environment and some protected agriculture.

Therefore, temporary construction and facility agriculture should be strengthened, reduced or stopped.

Outdoor air work to avoid the harm of sandstorm weather. At the same time, it is necessary to do a good job of protection to avoid the impact of sandstorm weather on human health.

And transportation.

Extended data:

The commonly used symbols in weather forecast are: sunny, cloudy, cloudy, frost, thunderstorm, rainfall, snowfall, fog, wind, cooling, sunshine, rain, sun, moon, cloud, umbrella and snowman.

1, sunny: the sky is less than 30% cloudy;

2. Sunny to cloudy: the sky cloud amount is less than 30%, and the sky cloud amount accounts for 30-80%;

3, cloudy: the amount of clouds in the sky accounts for 30-80%;

4. Yin: the amount of clouds in the sky accounts for more than 90%;

5. Light rain: the daily rainfall is less than10 mm;

6. Moderate rain: daily rainfall10.1-24.9mm;

7. Heavy rain: the daily rainfall is 25.0-49.9 mm;

8. Heavy rain: the daily rainfall is more than 50.0 mm;

9. Thunderstorm: formation precipitation that suddenly stops and is accompanied by lightning and thunder;

Baidu encyclopedia-sandstorm

China Meteorological Bureau-Weather Symbol