CLIMATE CRISIS
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China’s Henan province inundated by catastrophic floods
Henan province has been hit by devastating floods that have killed at least 71 people and affected more than 11 million. Meteorologists have blamed Typhoon In-fa for bringing abnormally intense rain to the region.
Horrific subway scenes
At least 14 people lost their lives on July 20 in Zhengzhou city when their subway train was flooded. The city suspended rail services at 6pm after heavy rain flooded a train yard and burst into the subway tunnel, according to a statement released by the subway company two days after the accident and reported in the Global Times. More than 500 people were trapped in the subway in one of the worst-affected areas of the city of 12.5 million.
Wulongkou
train yard
Tunnel
Nongye Road
Nanyang Road
Jingguang Expressway
Detailed area
Flood route
Huanghe Road
Haitansi
station
Shakoulu
station
Yuejigongyuan
station
Train location
LINE 5
300m
Flood route
A natural ditch which connects to the Jialu River and in theory should have diverted at least some surplus water there
Lantian road
Ditch
Wulongkou
train yard
The ditch, 20m from the tunnel, had been covered with concrete slabs a few months previously
Tunnel
Barrier
Huanbao road
Flood route
The flood crashes through the temporary water barrier into the subway tunnel
200m
Water level inside the carriages
The heaviest rainfall ever recorded in Henan
Rainfall in the central Chinese province reached unprecedented levels, causing floods of an intensity not seen in decades. Henan has many cultural sites and is a major base for both industry and agriculture.
Weather from 3pm on July 19 to 3pm on July 20
Rain from 2pm on July 20 to 2pm on July 21
0-10 mm
10-25 mm
Beijing
25-50 mm
Tianjin
50-100 mm
100-250 mm
Taiyuan
more than
250 mm
Shijiazhuang
Jinan
Xian
Yellow
Sea
Zhengzhou
Hefei
Wuhan
Chongqing
150km
How the downpours compare
The rainfall intensified after July 17, with Zhengzhou receiving a year’s worth of rain in just three days. On the other side of the world, countries in Europe have also experienced widespread devastation recently after record rainfall. In Germany, 100-150mm of rain fell in 24 hours on July 14/15, killing around 200 people.
Hong Kong
Zhengzhou, China
Cumulative average precipitation
449mm in 54 hours
161
million m³
Markischer Kreis, Germany
193
million m³
3.34 billion m³ of water
Highest hourly
rainfall recorded
(June 7, 2008)
145.5mm
Maximum hourly precipitation on July 20
201.9mm
Cumulative
maximum
precipitation
182.4mm in
72 hours
1.5 billion m³ of water
Hong Kong’s International Finance
Centre at a height of 415m
A comparision of rainfall in Henan
China is used to summer floods but a combination of weather patterns and climate change linked to human behaviour are thought to have contributed to the excessive rainfall and its longer-than-usual duration in some regions. “We cannot say a single extreme weather event is directly caused by climate change, but over the long term, global warming has led to an increase in the frequency and intensity of extreme weather events,” said Song Lianchun, a meteorologist with the National Climate Centre.
Last heaviest recorded rainfall
Rainfall on July 20, 2021
100
200
300
400
500
600mm
189.4
552.5
Zhengzhou
July 2, 1978
169.4
448.3
Xinmi
July 22, 2005
153.5
426.2
Songshan
June 21, 1956
295.3
349.7
Xingyang
July 22, 2005
Typhoon In-fa
It is the sixth tropical storm and third typhoon in the northwest Pacific region this year. The combined effects of the typhoon's airflow and an area of high pressure in the Pacific generated the heavy rain that caused devastating floods around 1,000km (621 miles) inland in Henan province.
Shenyang
NORTH KOREA
Baotou
Tianjin
Taiyuan
July 31
Zibo
Jinan
SOUTH KOREA
Yellow Sea
July 30
Xi'an
Zhengzhou
July 29
Nagasaki
Huainan
Nanjing
July 28
CHINA
Shanghai
July 27
Wuhan
July 26
July 25
Hangzhou
200km
Typhoon In-Fa
Changsha
Nanchang
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