Has Beijing issued the first blue warning of dust this year?

At 5: 35 on March 28th, the Beijing Meteorological Observatory issued a blue warning signal of dust. Affected by the upstream dusty weather, it is expected that there will be dusty weather in Beijing on the 28th, with low visibility. Please take preventive measures. At the same time, this is also the first dust warning this year.

According to the data of the Ministry of Environmental Protection, the air quality in Beijing is seriously polluted at present. The primary pollutant is PM 10, and the concentration is 1 18 1 μ g/m3.

The Beijing Meteorological Observatory issued a forecast at 6 o'clock: on the 28 th, the daytime was light to moderate, accompanied by floating dust, and the north turned to the east wind, with the highest temperature of 25 C; It turns cloudy and sunny at night, with a northeast wind of two or three, and the lowest temperature is 9℃. In the early warning of heavy air pollution orange and sand blue, please take good health protection when traveling; Spring is warm in bloom, please pay attention to appropriate protection for sensitive people; The weather is dry, pay attention to hydrating and moisturizing, and use fire safely; The temperature difference between day and night is large, please adjust your dress in time.

Sandstorm refers to a weather phenomenon in which strong winds drag a lot of dust into the air from the ground, making the air particularly turbid and the horizontal visibility is lower than 1 km. The formation of sandstorms requires conditions such as dust on the ground, strong winds and unstable air conditions. Sandstorms can cause houses to collapse, traffic power supply to be blocked or interrupted, fires, human and animal casualties and so on. And pollute the natural environment and destroy the growth of crops.