Many places have suffered from heavy rainfall for several days, but how much do you know about heavy rain and urban waterlogging？ Authoritative science popularization

　　Recently, many parts of the country, especially in North China, have experienced heavy rainfall.

　　The Central Meteorological Observatory continued to issue an orange rainstorm warning at 18: 00 on the 20th.It is estimated that from 20: 00 on July 20 to 20: 00 on July 21, there will be heavy rain to heavy rain in parts of central and northern Henan, southern Hebei, southeastern Shanxi, coastal areas of central and western Guangdong, southeastern Guangxi and southern Yunnan, among which there will be heavy rain (250-270 mm) in northern Henan, accompanied by short-term heavy precipitation (the maximum hourly rainfall is 30-50 mm, and the local area can exceed 70 mm).

　　On the afternoon of the 20thChina Meteorological Bureau launched a three-level emergency response,At 20 o’clock on the 20th.The National Defense General launched a flood control level III emergency response.

　　According to the weather in China,At present, there are 140 urban areas in the nationwide rainstorm warning.

　　So, what do you know about the rainstorm? How much rainfall can be called a rainstorm? How to avoid danger in the rainstorm, to ensure the safety of personnel to the greatest extent and reduce property losses? Poke the video and watch it together ↓

　　In recent days, several stations in Henan province broke the record of single-day precipitation in July. On the 20th, one-hour precipitation in Zhengzhou exceeded one-month rainfall in a year, which triggered urban waterlogging. What is urban waterlogging? How is it caused? Poke video ↓

　　be in the same storm-tossed boat―standing together through thick and thin

　　Pray for peace

　　Producer: Li Dayong

　　Producer Wang Yu?

　　Reporter Yang Yi

　　Thanks to China Meteorological Bureau.