According to the Central Meteorological Observatory, from day to night on the 15th, 12 provinces including Xinjiang, Inner Mongolia, Gansu, Ningxia, Shaanxi, Shanxi, Hebei, Beijing, Tianjin, Heilongjiang, Jilin, and Liaoning will experience obvious sand and dust weather, with sand storms in some areas. This is the most intense sand-dust weather process that my country has encountered in the past 10 years, and the range of sand-dust storms is also the widest in the past 10 years.
The sand and dust weather this time mainly originated in Mongolia. On the morning of the 14th, a sandstorm occurred in the southwest of Mongolia. The sand and dust moved south with the airflow. Due to the strong development of the Mongolian cyclone, the sand and dust followed the cold height behind the cyclone.