When will the sandstorm in Xi 'an end?

It ended in the evening of February 19. Xi 'an sandstorm refers to the sandstorm weather phenomenon in Xi 'an. Xi 'an is located in the middle of Shaanxi Province, China, and is the capital city of Shaanxi Province. Because it is located inland, the terrain is relatively flat, and the surrounding areas are mostly deserts and deserts, Xi is vulnerable to sandstorms. Sandstorm refers to a large amount of dust blown by the wind in dry and windy weather conditions, which makes the sky turbid and reduces visibility, which will have adverse effects on people's life, traffic and health. Sandstorms in Xi 'an often occur in spring and summer, especially in spring from March to May. During this period, the wind in the northwest is relatively strong and dry, and the desert and desert areas around Xi make the frequency of sandstorms higher.