How big is the rainstorm in Zhengzhou at present?

Very large, the average annual rainfall in Zhengzhou is 640.8 mm. Zhengzhou Meteorological Bureau made a data collation and summary of this rainstorm. From 0/6 o'clock to 0/7 o'clock in Zhengzhou on the 20th, the hourly rainfall reached 20 1.9mm, from 20: 00 to 20: 00 on the 9th to 20: 00 on the 20th, the single-day rainfall was 552.5mm, and from 20: 00 on June 7th to 20: 00 on the 20th, the three-day rainfall was 6/kloc. This rainfall probability is basically once in a hundred years and once in a thousand years. Especially from July 20th 16 to 17, the hourly rainfall reached 20 1.9mm, which was the highest in 60 years. Zhengzhou Meteorological Bureau said that from the climatological point of view, by fitting the distribution curve, the probability and return period of hourly precipitation and daily precipitation are all once in a thousand years.

Regarding the rainstorm in Zhengzhou, Henan Province, the Central Meteorological Observatory explained that the typhoon "fireworks" thousands of miles away was the "pushing hand" behind the scenes. Under the guidance of typhoon and subtropical high, a large amount of water vapor is continuously transported from the sea to the land. The airflow was blocked by the mountains in northwest Henan, which led to more concentrated and intense rainfall.

Although it is a rainstorm in Henan, we can see how serious the flood is in Zhengzhou by comparing the data. 19 From 8: 00 on July 8 to 8: 00 on July 20, the average accumulated rainfall in Henan Province was 88 mm, of which Zhengzhou was 36 1 mm, and the maximum point was Huancuiyu in Xingyang, 840 mm; Jiaozuo 188 mm, and the maximum point is 345mm； at Hengshan Mountain in Mengzhou; Xuchang 187 mm, with the largest point of 466mm； in Yuhu Spring in Yuzhou; Pingdingshan 162 mm, the largest point is 406mm； in Lushan south ditch; Xinxiang 16 1 mm, with the maximum point of 294 mm in Xiaoyangzhuang, Yanjin. It can be seen that in addition to the green rain in Xingyang, the rainfall in Zhengzhou is still very large. The rainstorm will last until this Thursday.