中央气象台连发双预警，春节初四至初六北方大风沙尘来袭

Group 1 - The Central Meteorological Administration issued blue alerts for strong winds and sandstorms due to a strong cold air mass affecting regions from Jianghuai and northward from February 20 to 22, coinciding with the peak of the Spring Festival travel rush [1][2] - The blue alert for strong winds indicates that from 08:00 on February 20 to 08:00 on February 21, areas in northern and eastern Xinjiang, central and western Inner Mongolia, and parts of Gansu, Ningxia, and Shaanxi will experience winds of 5 to 7 levels, with gusts reaching 8 to 10 levels [1] - The sandstorm blue alert warns that regions including eastern and southern Xinjiang, western Inner Mongolia, and parts of Gansu and Ningxia will experience dust storms, with some areas facing severe sandstorms [2] Group 2 - Rain and snow impacts are expected to be limited, primarily affecting northern and eastern Xinjiang, northeastern and central Inner Mongolia, and parts of Tibet and the western Sichuan Plateau, with light to moderate snow or sleet, and localized heavy snow [4] - Starting February 21, significant snowfall is anticipated in eastern Inner Mongolia and the northeastern region, while increased rainfall is expected in southern areas [4] - Meteorological experts advise caution regarding firework displays and forest fire sources in regions such as Xinjiang, Gansu, Ningxia, and Shaanxi due to strong winds, and highlight health precautions against respiratory diseases caused by dust and severe temperature drops [4]