Heavy rains triggered flooding across northern Vietnam on Tuesday, with schools closed and transport limited, two days after the deadliest storm of the year to date made landfall in the coastal nation.

The environment ministry said the death toll had risen by four, to 26, with another 22 still missing and roughly 100 people injured. 

The national weather agency warned of flash floods and landslides in the aftermath of Typhoon Bualoi, saying that rainfall had exceeded 300 mm (roughly 12 inches) in the past 24 hours in several areas.

Transport, schools disrupted in north

Vietnam Airlines canceled or rescheduled several flights at Hanoi's Noi Bai international airport for the safety of passengers. 

"The weather condition in Hanoi is evolving in a complicated manner with stormy rains that affect visibility and operations," the country's flag carrier said. 

Vietnam Railways Corp also suspended most of its trains between Hanoi and the business hub Ho Chi Minh City.

Capital Hanoi flooded after torrential rains

State media carried images of several flooded streets in Hanoi and stricken cars and motorbikes after the downpours and thunderstorms that hit the city on Monday. 

Residents reported flooded homes and an inability to reach their offices on the roads. One resident described the city on Tuesday as "a big pool," saying it was the capital's worst flooding since 2008.

Social media images showed military trucks transporting children through flooded streets from a school in the west of the capital, with appeals from parents for similar help in the north of the city. 

"It's just water everywhere here," wrote one mother. 

Some schools, meanwhile, said they would stay open in case students and teachers were unable to return home.

What else do we know about Typhoon Bualoi?

Typhoon Bualoi made landfall over Vietnam late on Sunday, with winds of 130 kilometers (80 miles) per hour, and stayed over land for around 12 hours. 

It arrived in Vietnam after passing over the Philippines, killing 27 people and forcing tens of thousands out of their homes. 

Vietnam's Environment Ministry said on Tuesday that 105 people were injured and more than 135,000 homes had been damaged, while more than 25,500 hectares (63,000 acres) of rice and crops had been flooded. The worst hit areas were the provinces of Nghe An and Ha Tinh. 

Vietnam is a country with a long coastline on its eastern flank, making it highly susceptible to typhoons and tropical cyclones alike, almost all year round.

The typhoon season typically runs from roughly June to November — last September, Typhoon Yagi killed hundreds of people and caused economic losses estimated at the equivalent of $3.3 billion (roughly €2.8 billion). 

Edited by: Dmytro Hubenko