A woman stands under a waterfall as a lake overflows due to heavy rainfall in Mumbai, India August 29, 2020. REUTERS/Francis Mascarenhas

People stand in the water as a lake overflows due to heavy rainfall in Mumbai, India, August 29, 2020. REUTERS/Francis Mascarenhas

Members of the media gather under a tent during heavy rainfall before visiting the Parlitobel gorge near the village of Vaettis, Switzerland August 13, 2020. REUTERS/Arnd Wiegmann

Passengers wearing masks following the coronavirus disease (COVID-19) outbreak are seen silhouetted on a bus amid rainfall in Beijing, China August 12, 2020. REUTERS/Tingshu Wang

A passenger wearing a mask following the coronavirus disease (COVID-19) outbreak rides on a bus, amid rainfall in Beijing, China August 12, 2020. REUTERS/Tingshu Wang

A man smokes with a mask on his chin following the coronavirus disease (COVID-19) outbreak, during a rainfall in Beijing, China August 12, 2020. REUTERS/Tingshu Wang

A man wearing a raincoat rides on a scooter amid rainfall in Beijing, China August 12, 2020. REUTERS/Tingshu Wang

Women wearing masks following the coronavirus disease (COVID-19) outbreak walk on a street as they hold an umbrella amid rainfall in Beijing, China August 12, 2020. REUTERS/Tingshu Wang

A man smokes as he holds an umbrella amid rainfall in Beijing, China August 12, 2020. REUTERS/Tingshu Wang

A woman video chats on a phone wearing a mask following the coronavirus disease (COVID-19) outbreak, while she is covering herself under an umbrella amid rainfall, in Beijing, China August 12, 2020. REUTERS/Tingshu Wang

A general view shows Seoul after rainfall, South Korea, August 7, 2020. REUTERS/Kim Hong-Ji

A general view shows Seoul after rainfall, South Korea, August 7, 2020. REUTERS/Kim Hong-Ji

A general view shows Seoul after rainfall, South Korea, August 7, 2020. REUTERS/Kim Hong-Ji

People look at a fallen bus-stop after heavy rainfall in Mumbai, India, August 6, 2020. REUTERS/Francis Mascarenhas

A fallen tree is seen next to a waterlogged gymkhana after heavy rainfall in Mumbai, India, August 6, 2020. REUTERS/Francis Mascarenhas

Firefighters and other workers clear debris from a landslide after heavy rainfall in Mumbai, India, August 6, 2020. REUTERS/Francis Mascarenhas

A woman talks on her phone next to a damaged car after a tree fell on it after heavy rainfall in Mumbai, India, August 6, 2020. REUTERS/Francis Mascarenhas

A woman walks past a damaged car after an uprooted tree fell on it after heavy rainfall in Mumbai, India, August 6, 2020. REUTERS/Francis Mascarenhas

Firefighters clear debris from a landslide after heavy rainfall in Mumbai, India, August 6, 2020. REUTERS/Francis Mascarenhas

Firefighters clear debris from a landslide after heavy rainfall in Mumbai, India, August 6, 2020. REUTERS/Francis Mascarenhas

Men look at a damaged signboard of the Bombay Stock Exchange (BSE) building after heavy rainfall in Mumbai, India, August 6, 2020. REUTERS/Francis Mascarenhas

A man stands at the flooded entrance of a gymkhana after heavy rainfall in Mumbai, India, August 6, 2020. REUTERS/Francis Mascarenhas

A delivery boy pushes his scooter after it stopped working along a waterlogged road following heavy rainfall in Mumbai, India, August 5, 2020. REUTERS/Francis Mascarenhas

A man helps a woman cross a waterlogged road after heavy rainfall in Mumbai, India, August 5, 2020. REUTERS/Francis Mascarenhas

Children play on a waterlogged road after it was closed because of heavy rainfall in Mumbai, India, August 5, 2020. REUTERS/Francis Mascarenhas

A man rides a vehicle at a dam that collapsed following heavy rainfall at the Shazixi reservoir in Yangshuo county, Guangxi Zhuang Autonomous Region, China July 16, 2020. Picture taken July 16, 2020. REUTERS/Thomas Suen

People ride on a vehicle at a dam that collapsed following heavy rainfall at the Shazixi reservoir in Yangshuo county, Guangxi Zhuang Autonomous Region, China July 16, 2020. Picture taken July 16, 2020. REUTERS/Thomas Suen

A dam that collapsed following heavy rainfall is seen at the Shazixi reservoir in Yangshuo county, Guangxi Zhuang Autonomous Region, China July 16, 2020. Picture taken July 16, 2020. REUTERS/Thomas Suen

A boy walks along an alley as the river overflows due to incessant rainfall at a slum along the bank of Bagmati River in Kathmandu, Nepal July 20, 2020. REUTERS/Navesh Chitrakar

Nepalese police personnel patrol a flooded area as the river overflows due to incessant rainfall at a slum along the bank of Bagmati River in Kathmandu, Nepal July 20, 2020. REUTERS/Navesh Chitrakar

A woman walks along an alley as she heads towards her house after the river overflowed due to incessant rainfall at a slum along the bank of Bagmati River in Kathmandu, Nepal July 20, 2020. REUTERS/Navesh Chitrakar

A boy uses a plate to clear water entering his house as the river overflows due to incessant rainfall at a slum along the bank of Bagmati River in Kathmandu, Nepal July 20, 2020. REUTERS/Navesh Chitrakar TPX IMAGES OF THE DAY

Residents look towards a flooded street as the river overflows due to incessant rainfall at a slum along the bank of Bagmati River in Kathmandu, Nepal July 20, 2020. REUTERS/Navesh Chitrakar

A man walks along a flooded street as a river overflows due to incessant rainfall at a slum along the bank of Bagmati River in Kathmandu, Nepal July 20, 2020. REUTERS/Navesh Chitrakar

Residents look from a balcony as a river overflows due to incessant rainfall at a slum along the bank of Bagmati River in Kathmandu, Nepal July 20, 2020. REUTERS/Navesh Chitrakar

Houses are seen submerged in the waters as a river overflows due to incessant rainfall in Bhaktapur, Nepal July 20, 2020. REUERS/Navesh Chitrakar

A man stands on a bridge as a river overflows due to incessant rainfall in Bhaktapur, Nepal July 20, 2020. REUERS/Navesh Chitrakar

People stand on a doorway of a house as a river overflows due to incessant rainfall in Bhaktapur, Nepal July 20, 2020. REUERS/Navesh Chitrakar

A car is partially submerged in water as a flash flood hits Palermo following heavy rainfall causing the deaths of two people according to local media, in Palermo, Italy, July 15, 2020. Vigili del Fuoco/Handout via REUTERS ATTENTION EDITORS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. DO NOT OBSCURE LOGO.

A view of floodwaters overflown to the banks of Tai Lake following heavy rainfall in Huzhou, Zhejiang province, China July 15, 2020. REUTERS/Aly Song

A view of floodwaters overflown to the banks of Tai Lake following heavy rainfall in Huzhou, Zhejiang province, China July 15, 2020. REUTERS/Aly Song

People stand by the Tai Lake, which has flooded its banks following heavy rainfall, in Huzhou, Zhejiang province, China July 15, 2020. REUTERS/Aly Song

A man removes water from inside a boat near the Tai Lake, which has flooded its banks following heavy rainfall, in Huzhou, Zhejiang province, China July 15, 2020. REUTERS/Aly Song

A view of floodwaters overflown to the banks of Tai Lake following heavy rainfall in Huzhou, Zhejiang province, China July 15, 2020. REUTERS/Aly Song

A man looks at the Tai Lake, which has flooded its banks following heavy rainfall, in Huzhou, Zhejiang province, China July 15, 2020. REUTERS/Aly Song

A view of floodwaters overflown to the banks of Tai Lake following heavy rainfall in Huzhou, Zhejiang province, China July 15, 2020. REUTERS/Aly Song

A man carries an elderly woman as they cross a waterlogged street during heavy rainfall in Mumbai, India, July 15, 2020. REUTERS/Francis Mascarenhas TPX IMAGES OF THE DAY

A bus is seen on a waterlogged street after it broke down during heavy rainfall in Mumbai, India, July 15, 2020. REUTERS/Francis Mascarenhas

People push a car through a waterlogged street after it broke down during heavy rainfall in Mumbai, India, July 15, 2020. REUTERS/Francis Mascarenhas

Formula One F1 - Steiermark Grand Prix - Red Bull Ring, Spielberg, Styria, Austria - July 11, 2020 Firefighters remove water from a roof after heavy rainfall, following the resumption of F1 after the outbreak of the coronavirus disease (COVID-19) Joe Klamar/Pool via REUTERS

China Post workers sort parcels amid rainfall near a delivery vehicle, following the outbreak of the coronavirus disease (COVID-19), in Beijing, China July 9, 2020. REUTERS/Tingshu Wang

China Post workers sort parcels amid rainfall near a delivery vehicle, following the outbreak of the coronavirus disease (COVID-19), in Beijing, China July 9, 2020. REUTERS/Tingshu Wang

A woman wearing a raincoat and face mask rides a bicycle with a young person on her back seat amid rainfall, following the outbreak of the coronavirus disease (COVID-19), in Beijing, China June 29, 2020. REUTERS/Tingshu Wang

A man holds an umbrella for a girl, both wearing face masks, as they walk on an overpass amid rainfall, following the outbreak of the coronavirus disease (COVID-19), in Beijing, China June 29, 2020. REUTERS/Tingshu Wang

Flooded houses are seen after heavy rainfall in Arilje, Serbia, June 24, 2020. Picture taken with a drone. REUTERS/Marko Djurica

A man drives past in a tractor amongst flooded houses after heavy rainfall in Arilje, Serbia, June 24, 2020. REUTERS/Marko Djurica

People walk out from their flooded house after heavy rainfall in Arilje, Serbia, June 24, 2020. REUTERS/Marko Djurica

A woman walks out of her flooded house after heavy rainfall in Arilje, Serbia, June 24, 2020. REUTERS/Marko Djurica