At 17:45 on June 18, the Changdu Meteorological Observatory of Xizang issued a blue warning signal for heavy rainfall: Affected by the vortex, it is expected that from 19:00 on June 18 to 19:00 on June 19, there will be moderate to heavy rain (17~37.9 mm) in Dingqing, Jiangda, Leiwuqi, Bianba, northern Karuo, eastern Gongjue, and some towns in Dingqing, Jiangda, Bianba, and northern Leiwuqi will have heavy rain (25~49.9 mm). During the process, strong convective weather such as thunderstorms, strong winds, hail, and short-term heavy precipitation is prone to occur. Defense measures: 1. It is necessary to strengthen the inspection and elimination of hidden geological hazards, and prevent secondary disasters such as local flash floods, mudslides, and landslides that may be caused by heavy rainfall. 2. Prevent the adverse effects of heavy rainfall on major engineering construction, energy supply, communication facilities, transportation, etc. 3. Pay attention to preventing the adverse effects of strong convective weather on agricultural and animal husbandry production, outdoor activities (construction sites, high-altitude operations), etc., and do a good job in lightning protection safety for cordyceps harvesting and excavation.