At 16:50 on August 18, Huangnanzhou Meteorological Observatory continued to issue a yellow warning for severe convection: it is expected that from 16:00 on August 18, 2025 to 16:00 on August 19, there will be thunderstorms in the whole state. Dangshun Township and Angla Township in Jianzha County, Zhamao Township, Jiawu Township, Qukuhu Township in Tongren City, Xibosha Township and Duohemao Township in Zeku County, Youganning Township and Saierlong Township in Henan County will experience short-term heavy rainfall of 20-30 millimeters per hour; Nengke Township, Jianzhatan Township, Angla Township, Dangshun Township in Jianzha County, Jiawu Township, Guashize Township, Qukuhu Township, Zhamao Township in Tongren City, Zequ Town, Xibosha Township, Duohemao Township in Zeku County, Youganning Town, Ningmute Town, and Tuoyema Township in Henan County will experience thunderstorms of magnitude 8 or above or hail with a diameter of more than 5 millimeters. It is expected that strong convection will mainly concentrate from 16:00 on August 18th to 03:00 on August 19th. The meteorological risk of disasters such as landslides, mudslides, flash floods, and urban and rural waterlogging is high, and the possibility of meteorological disasters such as wind, hail, and lightning strikes is high. Please pay attention to prevention. Defense guidelines: 1. The government and relevant departments shall make preparations for short-term rainstorm, lightning protection and gale prevention according to their responsibilities, and make preparations for manual hail suppression; 2. Outdoor pedestrians and staff should reduce outdoor activities and stay away from rivers, sheds, billboards, etc; 3. The construction materials shall be covered on the construction site, and the outdoor materials susceptible to rainstorm, wind and hail shall be properly placed; 4. Check the drainage system of cities and farmland, prepare for drainage and defense against disasters such as flash floods, landslides, and mudslides.