What is the reason why the average rainfall in the Yangtze River basin has reached the highest in the past 6 years?

The Central Meteorological Observatory has learned that there have been six heavy rainfall events in the south since June 1st. As of July 12th, the average rainfall in the Yangtze River Basin reached 43mm, 49% more than the normal period, surpassing 216 (395mm) and 1998 (358mm), making it the highest in the same period since 1961.

at the same time, the monitoring shows that at 18: on July 8th, the area of the main body of Poyang Lake and its adjacent waters increased by 352 square kilometers to 4,26 square kilometers compared with that on July 2nd, which was 2% larger than the historical average (3,51 square kilometers) in the same period, the largest in the past 1 years, and the five branches flowed into the Hukou wetland and were flooded in a large area.

Extended data:

According to the real-time hydrological monitoring and forecasting analysis of the Hydrological Bureau of the Yangtze River Water Resources Commission of the Ministry of Water Resources,

The flood peak in the middle and lower reaches of the Yangtze River has passed through the Hankou-Jiujiang section. Hankou Station, the main stream of the Yangtze River, has a peak water level of 28.77 meters, and the peak time is 23: on July 12, 22; Jiujiang railway station, the main stream of the Yangtze River, has a peak water level of 22.81 meters, and the peak time is 18: on July 12, 22; Hukou Station of Poyang Lake, the peak water level is 22.49 meters, and the peak time is 2: on July 12, 22; It is estimated that the peak water level of Datong Station in the main stream will be about 16.3 meters in the early morning of the 14th.

the current flood control situation is very severe. At present, the main stream of the Yangtze River below Jianli and Dongting Lake, Poyang Lake and Taihu Lake still exceed the police. Meteorologists reminded that Yunnan, Guizhou, Chongqing, Jianghuai, Jianghan, northern Jiangnan and other places should pay attention to small and medium-sized river floods, urban and rural waterlogging, mountain torrents and other geological disasters that may be caused by heavy rainfall; The changes of rain and flood in the Yangtze River basin, Poyang Lake, Dongting Lake and Taihu Lake basin need to attract public attention.

Hubei xinhuanet-since June, the average rainfall in the Yangtze river basin has reached the highest level in the past 6 years.