Chinanews.com, July 15: "From 15th to 16th, there will still be heavy rainfall in the middle and lower reaches of the Yangtze River, especially in the upper reaches of the Yangtze River, where strong rains will be maintained for the next 10 days. The superposition effect is obvious and the risk of disasters is high. The current flood control work of the Yangtze River, Poyang Lake, Dongting Lake, Taihu Lake and other large rivers and large lakes." Wang Zhihua, deputy director of the Emergency Disaster Mitigation and Public Services Department of the China Meteorological Administration and press spokesman, said on the 15th.
On the 15th, the China Meteorological Administration held a special press conference for the 2020 flood season. At the meeting, Wang Zhihua made the above introduction.
Wang Zhihua said that in the next ten days, there will be two main rainfall processes in the southern region. “On July 15-16, the heavy rainfall zone of this process from yesterday is mainly located in the Sichuan Basin to the middle and lower reaches of the Yangtze River. The local rainfall in western Anhui and other places reached 200-300 mm. The rainfall on most of the middle and lower reaches of the Yangtze River along the main stream reached 50-100 mm, and the rainfall on the upper reaches of the Yangtze River from Yibin to Yichang reached 40-60 mm. July 17-21, the main The eastern section of the rain belt has lifted to the north, while the western section still maintains little movement."
In addition, in the next 10 days, there will still be many showers or thunderstorms in North China, with local concomitant strong convective weather such as short-term heavy precipitation, thunderstorms, gale or hail.
Wang Zhihua said that during the period of "Seven Downs and Eight Ups" (July 16-August 15), "China's precipitation generally shows a spatial distribution of'more north and less south'. The main rain belt in the east of China shows obvious characteristics of periodic changes, 7 At the end of the middle of the month, the main rain belt is located between the Yangtze River and the Yellow River, and the intensity of precipitation is strong." From late July to early August, the main rain belt lifted north to Huanghuai, North China, and north-central-south regions of Northeast China. Rainy areas are mainly located in most parts of Northeast China, North China, Huanghuai, Jianghan, Northwest China, Northeast China, Northwest China, Northeast China, Northeast China, Northeast China, Northeast China, East China Northwest China, Northwest China, Northwest China, Northeast China 20-50% more in the central and northern parts of the country. In the northeastern part of Inner Mongolia and the central and western parts of Jiangnan, there are 20-50% less.
It is estimated that the number of typhoons generated in the Northwest Pacific and the South China Sea during the period of "Seven Downs and Eight Ups" is 3-4, which is slightly less than the same period of the normal year (5). Typhoon activity will be active from late July. "The number of typhoons landing in my country is 2 to 3, which is slightly more than the same period of the normal year (2). The typhoon path is dominated by northwestern behavior." Wang Zhihua said.
Wang Zhihua pointed out that, based on the above forecast and observations, it is recommended that the recent flood prevention and disaster reduction work should focus on the following aspects: First, there will still be heavy rainfall in the middle and lower reaches of the Yangtze River from the 15th to the 16th. Obviously, the risk of disaster is very high, and we need to continue to do the current flood control work of the Yangtze River, Poyang Lake, Dongting Lake and Taihu Lake. Second, during the "seventh and eighth up" period, it is necessary to strengthen the flood control work in the northern Huaihe River Basin, the middle and lower reaches of the Yellow River, the Haihe River Basin, the Liaohe River Basin, and the Songhua River Basin; And various preparations for typhoon prevention along the southeast coast.