A provisional bridge built by workers of the Technische Hilfswerk (THW) is seen following heavy rainfalls in Bad Neuenahr-Ahrweiler, Germany, July 31, 2021. REUTERS/Leon Kuegeler

A provisional bridge built by workers of the Technische Hilfswerk (THW) is seen following heavy rainfalls in Bad Neuenahr-Ahrweiler, Germany, July 31, 2021. REUTERS/Leon Kuegeler

Champagne vineyards that suffered damages by mildew fungus due to heavy rainfall earlier this month are seen in Le Breuil, France July 30, 2021. Picture taken with a drone. REUTERS/Yiming Woo

Grapes that are partially damaged by mildew fungus due to heavy rainfall earlier this month are seen in the vineyard of Champagne maker Franck Jobert, in Le Breuil, France July 30, 2021. REUTERS/Yiming Woo

Champagne vineyards that suffered damages by mildew fungus due to heavy rainfall earlier this month are seen in Le Breuil, France July 30, 2021. Picture taken with a drone. REUTERS/Yiming Woo

Grapes that are partially damaged by mildew fungus due to heavy rainfall earlier this month are seen in the vineyard of Champagne maker Franck Jobert, in Le Breuil, France July 30, 2021. REUTERS/Yiming Woo

Grapes that are partially damaged by mildew fungus due to heavy rainfall earlier this month are seen in the vineyard of Champagne maker Franck Jobert, in Le Breuil, France July 30, 2021. REUTERS/Yiming Woo

Grapes that are partially damaged by mildew fungus due to heavy rainfall earlier this month are seen in the vineyard of Champagne maker Franck Jobert, in Le Breuil, France July 30, 2021. REUTERS/Yiming Woo

Champagne vineyards that suffered damages by mildew fungus due to heavy rainfall earlier this month are seen in Le Breuil, France July 30, 2021. Picture taken with a drone. REUTERS/Yiming Woo

Champagne vineyards that suffered damages by mildew fungus due to heavy rainfall earlier this month are seen in Le Breuil, France July 30, 2021. Picture taken with a drone. REUTERS/Yiming Woo

Grapes that are partially damaged by mildew fungus due to heavy rainfall earlier this month are seen in the vineyard of Champagne maker Maxime Toubart, in Le Breuil, France July 30, 2021. REUTERS/Clotaire Achi

Grapes that are partially damaged by mildew fungus due to heavy rainfall earlier this month are seen in the vineyard of Champagne maker Maxime Toubart, in Le Breuil, France July 30, 2021. REUTERS/Clotaire Achi

French champagne producer Maxime Toubart holds up grapes damaged by mildew fungus due to heavy rainfall earlier this month, in Le Breuil, France July 30, 2021. REUTERS/Yiming Woo

French champagne producer Maxime Toubart holds up grapes damaged by mildew fungus due to heavy rainfall earlier this month, in Le Breuil, France July 30, 2021. REUTERS/Yiming Woo

French champagne producer Maxime Toubart holds up grapes damaged by mildew fungus due to heavy rainfall earlier this month, in Le Breuil, France July 30, 2021. REUTERS/Yiming Woo

Grapes that are partially damaged by mildew fungus due to heavy rainfall earlier this month are seen in the vineyard of Champagne maker Maxime Toubart, in Le Breuil, France July 30, 2021. REUTERS/Clotaire Achi

French champagne producer Maxime Toubart tastes champagne near grapes that are partially damaged by mildew fungus due to heavy rainfall earlier this month, in Le Breuil, France July 30, 2021. REUTERS/Yiming Woo

French champagne producer Maxime Toubart holds up grapes damaged by mildew fungus due to heavy rainfall earlier this month, in Le Breuil, France July 30, 2021. REUTERS/Clotaire Achi

Tokyo 2020 Olympics - Triathlon - Women's Olympic Distance - Final - Odaiba Marine Park, Tokyo, Japan July 27, 2021. Athletes compete in rainfall and wind caused by tropical storm Nepartak. REUTERS/Issei Kato

Tokyo 2020 Olympics - Triathlon - Women's Olympic Distance - Final - Odaiba Marine Park, Tokyo, Japan July 27, 2021. Athletes compete in rainfall and wind caused by tropical storm Nepartak. REUTERS/Issei Kato

Tokyo 2020 Olympics - Triathlon - Women's Olympic Distance - Final - Odaiba Marine Park, Tokyo, Japan July 27, 2021. Athletes compete in front of a life-size Unicorn Gundam statue in rainfall and wind caused by tropical storm Nepartak. REUTERS/Issei Kato

Tokyo 2020 Olympics - Triathlon - Women's Olympic Distance - Final - Odaiba Marine Park, Tokyo, Japan July 27, 2021. Athletes compete in rainfall and wind caused by tropical storm Nepartak. REUTERS/Issei Kato

Tokyo 2020 Olympics - Triathlon - Women's Olympic Distance - Final - Odaiba Marine Park, Tokyo, Japan July 27, 2021. Athletes compete in rainfall and wind caused by tropical storm Nepartak. REUTERS/Issei Kato

Pig farmer Cheng, 47, wades through floodwaters with a pig carcass following heavy rainfall in Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

Villagers stand next to chicken carcasses after heavy rainfall flooded Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

Chicken carcasses are seen piled on a truck bed after heavy rainfall flooded Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

Pigs are seen amid floodwaters after heavy rainfall in Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

A villager pushes a wheelbarrow filled with chicken carcasses after heavy rainfall flooded Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

Pig farmer Cheng, 47, wades through floodwaters past pig carcasses next to a farmland following heavy rainfall in Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

Villagers transport a crate filled with dead quails after heavy rainfall flooded in Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

A man stands on a vehicle in a flooded farmland following heavy rainfall in Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

Pig carcasses tied with strings are seen in floodwaters next to a farmland following heavy rainfall in Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

A pig carcass lies in floodwaters on a farmland following heavy rainfall in Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021 with a drone. REUTERS/Aly Song

Pig farmer Cheng, 47, stands amid floodwaters following heavy rainfall in Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

Chicken carcasses are seen piled on a truck bed after heavy rainfall flooded Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021 with a drone. REUTERS/Aly Song

A pig carcass lies in floodwaters on a farmland following heavy rainfall in Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021 with a drone. REUTERS/Aly Song

Pig carcasses tied to trees are seen in floodwaters next to a farmland following heavy rainfall in Wangfan village of Xinxiang, Henan province, China July 25, 2021. Picture taken July 25, 2021. REUTERS/Aly Song

People walk and cycle through heavy rainfall, amid the coronavirus disease (COVID-19) outbreak, in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

A person wearing a poncho and protective face mask walks through heavy rainfall, amid the coronavirus disease (COVID-19) outbreak, in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People walk through heavy rainfall, amid the coronavirus disease (COVID-19) outbreak, in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People walk through heavy rainfall, amid the coronavirus disease (COVID-19) outbreak, in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People work in an area affected by heavy rainfall in Dinant, Belgium July 25, 2021. REUTERS/Johanna Geron

A man walks as he cleans his house which was affected by heavy rainfall in Dinant, Belgium July 25, 2021. REUTERS/Johanna Geron

People work in an area affected by heavy rainfall in Dinant, Belgium July 25, 2021. REUTERS/Johanna Geron

A woman walks in an area affected by heavy rainfall in Dinant, Belgium July 25, 2021. REUTERS/Johanna Geron

A woman works to recover her belongings following heavy rainfall in Dinant, Belgium July 25, 2021. REUTERS/Johanna Geron

A woman works in an area affected by heavy rainfall in Dinant, Belgium July 25, 2021. REUTERS/Johanna Geron

A man carrying boots and cleaning equipment walks through a damaged road following heavy rainfall in Dinant, Belgium July 25, 2021. REUTERS/Johanna Geron

A man walks through a damaged road following heavy rainfall in Dinant, Belgium July 25, 2021. REUTERS/Johanna Geron

Plastic bottles are seen in a ditch where floodwaters have receded following heavy rainfall in Xinxiang, Henan province, China July 25, 2021. Picture taken with a drone. REUTERS/Aly Song

Villager Li, 40, in a dinghy asks rescue workers to help her family following heavy rainfall at a village in Xinxiang, Henan province, China July 24, 2021. REUTERS/Aly Song

Guo Guangrong 69, stands in front of her home following heavy rainfall at a village in Xinxiang, Henan province, China July 24, 2021. REUTERS/Thomas Suen

Villagers wade through floodwaters following heavy rainfall at a village in Xinxiang , Henan province, China July 24, 2021. REUTERS/Aly Song

A villager wades through floodwaters following heavy rainfall at a village in Xinxiang, Henan province, China July 24, 2021. REUTERS/Aly Song

A man carrying water bottles wades through floodwaters following heavy rainfall at a village in Xinxiang, Henan province, China July 24, 2021. REUTERS/Aly Song

A boy wades through floodwaters following heavy rainfall at a village in Xinxiang, Henan province, China July 24, 2021. REUTERS/Aly Song

A member of Dawn Emergency Rescue team holds a child as villagers stranded by floodwaters are being evacuated following heavy rainfall at a village in Xinxiang, Henan province, China July 24, 2021. REUTERS/Aly Song


Children wade through floodwaters following heavy rainfall at a village in Xinxiang, Henan province, China July 24, 2021. REUTERS/Aly Song

People wade through floodwaters following heavy rainfall at a village in Xinxiang, Henan province, China July 24, 2021. REUTERS/Aly Song

A villager rests on a boat in floodwaters following heavy rainfall at a village in Xinxiang, Henan province, China July 24, 2021. REUTERS/Aly Song