Analysis by two departments: In July, the water and power supply situation in these areas was tight due to natural disasters | risks | power supply
Emergency Management Department of the Office of the National Disaster Reduction Commission
Release the National Natural Disaster Risk Situation for July
Recently, the Office of the National Disaster Reduction Commission and the Ministry of Emergency Management, together with the Ministry of Natural Resources, the Ministry of Water Resources, the Ministry of Agriculture and Rural Affairs, the Meteorological Bureau, the Forestry and Grassland Bureau and other departments and units, held a meeting to discuss and assess the national natural disaster risk situation in July.
The comprehensive analysis shows that the seven major river basins in China will enter the main flood season in an all-round way, and the Yangtze River, Huaihe River, the Taihu Lake Lake and Songliao River basins will have flood disaster risks; The extreme nature of severe convective weather has increased, and wind and hail disasters may occur in many areas; 1-2 typhoons have made landfall or significantly affected the southern or southeastern coasts of China; Local geological hazard risks are high in Zhejiang, Anhui, Jiangxi, Hubei, Yunnan, and other regions; Forest fire risk levels are relatively high in North China, Northeast China, and other regions. Specifically, as follows:
One is the risk of flood disasters. The precipitation in the central and eastern parts of Northeast China, central and northern parts of East China, central and northern parts of Central China, and western regions of Southwest China is higher than that of the same period in normal years. Some rivers in the upper reaches of the Yangtze River, Huaihe River and Huainan River, Qiantang River in the the Taihu Lake Lake basin, Songhua River in the Songliao River basin and other rivers may experience regional rainstorm floods, and some rivers in the rainstorm area may be over alerted. In addition, extreme heavy rainfall may cause disasters such as floods in small and medium-sized rivers, accidents in small and medium-sized reservoirs and hydropower stations, mountain floods, and urban waterlogging in the aforementioned areas.
The second is the risk of wind and hail disasters. With the further increase in temperature and abundant water vapor, some areas in Northeast China, East China, Central China, Southwest China and other regions will experience an increase in short-term heavy rainfall, strong winds, thunderstorms, hail and other severe convective weather, increasing extreme weather and increasing risk of wind and hail disasters. At the same time, July is a month with a high incidence of tornadoes, and the situation of lightning deaths in rural areas is prominent, requiring strengthened prevention.
The third is the risk of typhoon disasters. There are 2-4 typhoons generated in the Northwest Pacific and South China Sea, which are close to the same period as usual but relatively rare; Among them, 1-2 typhoons made landfall or significantly affected the southern or southeastern coasts of China. There may be 1-2 catastrophic typhoon storm surge processes along the southeastern coast of China, and 2-3 catastrophic wave processes in the East China Sea and South China Sea.
The fourth is geological hazard risk. Some regions in Beijing, Hebei, Jilin, Liaoning, Zhejiang, Anhui, Fujian, Jiangxi, Henan, Hubei, Hunan, Guangdong, Guangxi, Chongqing, Sichuan, Guizhou, Yunnan, Xizang, Shaanxi, Gansu, Xinjiang and other provinces have high risk of geological disasters, including western Zhejiang, southern Anhui, northern Jiangxi, eastern Hubei, and western Yunnan.
The fifth is the risk of high temperature and drought. Since June, China has experienced four regional high temperature processes, exacerbating the drought in the southwest region and putting pressure on water and power supply in some areas. In July, temperatures in most parts of the country were close to the same period as usual but slightly higher, with less precipitation and higher temperatures in the central and eastern parts of South China, the southern part of East China, the northern part of Northwest China, the central and western parts of Inner Mongolia, the western part of Northeast China, and the northern part of North China. There were periodic high temperature heatwaves and higher risks of drought, and the water and power supply situation was tight. In some areas, the task of agricultural drought resistance and seedling protection was relatively heavy.
The sixth risk is forest fire. Affected by strong convective weather factors such as high temperature and little rain, as well as lightning and strong winds, the forest fire risk levels in northern and western Beijing, northwestern Tianjin, northern Hebei, central and eastern Inner Mongolia, northwestern Heilongjiang, western Chongqing, and northern Xinjiang are relatively high. It is necessary to focus on preventing lightning fires in the forest areas of Northeast and Inner Mongolia, as well as forest fire risks caused by high temperatures in North China and other areas.
