Starting from September 19, many places in Gansu Province, including Lanzhou City and Linxia Prefecture, experienced rainy weather. As of 0:00 on the 20th, the cumulative rainfall at the Luotuoxiang Village Committee in Yuzhong County, Lanzhou City, reached 53.9 mm, already reaching the torrential rain level. The Meteorological Observatory of Linxia Hui Autonomous Prefecture continued to issue an orange rainstorm warning signal at 0:15 on September 20.

On the morning of September 19, sudden torrential rain along the Taizi Mountain line west of Zhongzuiling Township in Jishishan County, Linxia Prefecture, triggered floods, causing bridges, roads, river embankments and other facilities in the Majiazui River area of the township to be washed away or damaged. In addition, village-level cultural squares, industrial infrastructure, crops and farmers' houses were damaged to varying degrees. Up to now, the floods have not caused any casualties.