Parts of South Asia were pounded by historic rainfall during the height of monsoon season last month. More than 1,200 people have been killed in India and Bangladesh and some 41 million have been affected by flooding since June, according to the International Federation of Red Cross and Red Crescent Societies.
Mumbai, India's financial capital, has been beset with unrelenting rain, that has turned its streets into rivers.
The floods around the world also have raised questions of whether climate change is playing a role in the recent spate of disasters.
Houses that hugged the slopes, many of them little more than wooden shacks with tin roofs, were buried after torrents of mud poured down under the force of the water.
Gabriel Fattah Manga felt the land trembling as he prepared to go to work on August 14 and saw water and what he described as "this whole mountain coming down." Manga survived, but an entire generation of his family was swept away.
Flooding is not unusual in the region, which is experiencing its rainy season.
Nigerian president Muhammadu Buhari tweeted that more than 100,000 people had been displaced due to flooding in the state of Benue.
The National Emergency Management Agency, which manages disasters in Nigeria, also tweeted that it was sending a humanitarian team to support people affected by the flood.
August is monsoon season for South Asia, a time when much of the subcontinent is inundated with heavy rains.
The flooding this year is being described as the most serious in the country in 40 years by the International Federation of Red Cross and Red Crescent Societies.
In this Aug. 15, 2017, photo, flood affected villagers travel by boat in floodwaters in Morigaon district, east of Gauhati, northeastern state of Assam.
Other Indian states including Assam, Bihar, Uttar Pradesh and West Bengal have also dealt with intense flooding this season. The death toll in Assam, Bihar and Uttar Pradesh earlier last month was nearly 400.
The downpour also unleashed flooding and landslides in Nepal.
A man rests in his house damaged by flood in Itahari, Sunsari district, some 250 kms from Nepal's capital Kathmandu, on August 16, 2017.
Ram Krishna Subedi, a Nepal Home Ministry spokesman, told CNN last month that at least 143 people have been killed since August 11. Nearly 80,000 houses have been damaged.
Subedi said the type of storm was something Nepal has not seen in about 60 years, which contributed to the high death toll and heavy destruction.
"The rains that caused this flooding and landslides were very peculiar. Strong cloudbursts triggered heavy rains ... something that is not possible to predict ahead of time," he said.
Pakistani commuters travel on a flooded street following a heavy rainfall in Karachi, Pakistan, Thursday, Aug. 31, 2017.
Residents waded through waist-deep water as streets turned into rivers on Thursday.
Figures released by the city's Meteorological Department show Karachi normally receives an average of 19.9mm of rain in September. On Wednesday, northern parts of the city received 97mm, equivalent to five times that amount.
CNN's Stephanie Busari, Spencer