Today (June 2nd), China Meteorological Bureau held a press conference in June, at which the main weather and climate events in China in May were introduced. The details are as follows:
First, five heavy rains affected our country. In May, five heavy rains occurred in China, causing floods in some areas. May 2 — On the 7th, the accumulated precipitation in most parts of Jianghuai, western and eastern Jianghan, most parts of Jiangxi, most parts of Fujian and western Hunan was 50-100mm, with some exceeding 100mm. The accumulated precipitation of more than 50 mm covers an area of 865,000 square kilometers, which is the largest rainstorm process since this year. The daily rainfall of 20 national meteorological observatories in Jiangxi, Fujian, Anhui, Shanghai, Jiangsu, Henan and other places exceeded the historical extreme in May. May 20th — On the 22nd, the rainstorm process in southern China was strong. 05— 22nd; At 08: 00, the three-hour precipitation reached 300.1 mm and the hourly rain intensity reached 160.6 mm at Qintan Meteorological Observatory in Xiushan, Guilin, breaking the historical record of hourly rain intensity in Guilin. May 25th — On the 28th, a strong rainstorm occurred from the southwest to Huanghuai and Jianghuai. The accumulated rainfall in Dazhou, Sichuan, Wuhan, Hubei, Huanggang and Anqing, Anhui is 250 ~ 400 mm, and the daily rainfall (228.3 mm) at Xiuwen Station in Guizhou has exceeded the historical extreme.
Second, the meteorological drought in Yunnan has eased. Since the beginning of this year, the average precipitation in Yunnan Province has been 97.6 mm, which is 55.3% less than the normal period, the lowest in the historical period since 1961. The average number of meteorological drought days is 96.5 days, which is the third highest in the same period since 1961, with severe drought in winter and spring. In late January, drought in Yunnan began to emerge and develop. On May 9th, the areas with moderate drought and above and special drought in Yunnan Province reached the largest. May 13th — On the 16th, the accumulated precipitation in most parts of Yunnan was 25-50 mm, including 50-100 mm in the west and south, and the meteorological drought in Yunnan was alleviated to some extent. Since 17th, the meteorological drought in eastern Yunnan has been maintained or developed. At present, there is moderate and above meteorological drought in eastern Yunnan, and some areas are particularly dry.
Third, five strong convective weather affected the central and eastern regions of China. In May, there were five severe convective weather processes in China, which occurred on May 4th — 5th and 6th — 7th, 12th, 16th and 20th — 23rd. Among them, 20th — On the 23rd, a large-scale strong convective process affected most parts of China from north to south. The intensity of heavy precipitation in Guangxi, Guangdong and other places exceeded 100mm/h, and waterlogging occurred in some cities.
Fourth, there are three sand-dust processes affecting northern China, and the frequency of occurrence is close to 2000— The same period in 2022 (2.9 times). Among them, May 19th — On the 22nd, the dust storm process reached the level of sandstorm, which had a great impact on air quality, transportation and human health.
(CCTV reporter Liu Lulu He Xueguo)