"So far, the number of dead is 50 as per the hospital authorities of Baghlan-e-Markazi district of Baghlan province," said Hedayatullah Hamdard, the head of the provincial natural disaster management department, adding the toll could rise.

The official explained that heavy seasonal rains sparked the flooding, and residents were unprepared for the sudden rush of water.

Emergency personnel were "searching for any possible victims under the mud and rubble, with the help of security forces from the national army and police," Hamdard said late Friday.

"The weather is very gloomy right now and might pour down again," he added.

Dozens of tents, blankets and food were provided to those who lost their homes, the official said.

Video footage seen on social media showed huge torrents of muddy water swamping roads -- and bodies shrouded in white and black cloth.

In one video clip, children are heard crying and a group of men are looking at floodwaters, in which bits of broken wood and debris from homes can be seen.

Since mid-April, flash flooding and other floods have left about 100 people dead in 10 of Afghanistan's provinces, with no region entirely spared, according to authorities.

Farmland has been swamped in a country where 80 percent of the more than 40 million people depend on agriculture to survive.

Afghanistan -- which had a relatively dry winter, making it more difficult for the soil to absorb rainfall -- is vulnerable to climate change.

The nation, ravaged by four decades of war, is one of the poorest in the world and, according to scientists, one of the worst prepared to face the consequences of global warming.

Afghanistan, which is responsible for only 0.06 percent of the world's greenhouse gas emissions, ranks sixth on the list of countries most at risk from climate change, experts say.

Half of Afghanistan's population lives under the poverty line, and 15 million people are experiencing food insecurity, according to the World Bank.