A sandstorm swept across Dunhuang City in northwest China’s Gansu Province earlier this week.
The regional observatory issued a yellow alert for sandstorms at 15:04 local time on Sunday.
According to the regional meteorological department, the lowest visibility was reduced to 791 meters.
Videos show the wall-like sandstorm covering urban areas and highways. It is believed to have reached over one hundred meters high.
China has a four-tier color-coded weather warning system for sandstorms, with red representing the most severe, followed by orange, yellow, and blue.