The death toll from Typhoon Bualoi has climbed to more than 30 across Southeast Asia, with heavy rains continuing to hammer the region and raise the risk of further disasters.

In Vietnam, authorities reported 19 fatalities and 21 people still missing, making Bualoi the country’s most devastating storm so far this year.

The typhoon made landfall in north-central Vietnam, bringing intense sea surges, strong winds and torrential rainfall. On Tuesday, downpours triggered fears of additional flooding and landslides, particularly in the northern provinces and the capital, Hanoi.

Vietnam’s national weather agency said rainfall had exceeded 300mm in some areas over a 24-hour period. Authorities issued warnings for flash floods and landslides in several districts, advising residents near the Red River in Hanoi to remain on alert.

Meanwhile, in Thailand flooding was reported in 17 provinces, according to the country’s disaster prevention agency. The province of Ayutthaya was among the worst affected, with four deaths confirmed.

The Thai government deployed steel barriers along key rivers to protect the region’s UNESCO World Heritage sites, including the historic Wat Chaiwatthanaram temple.

The typhoon has now weakened to a tropical depression as it moved into Laos on Tuesday, the National Center for Hydro-Metrological Forecasting confirmed.

Bualoi’s impact in Thailand was compounded by residual water from Typhoon Ragasa last week and rising levels in the Chao Phraya and Pa Sak rivers. Several communities remain on high alert as floodwaters persist.

In the Philippines, where Bualoi first struck as a tropical storm, at least 11 people were killed. The island province of Biliran was hit hardest, with 10 deaths reported due to flooding and mudflows.

The storm destroyed homes, schools, bridges and critical insfrastructure. Roads clearing and water distribution efforts are still ongoing.

Experts warned that climate change is intensifying the frequency and severity of tropical storms in the region.

Warmer ocean temperatures are fueling stronger winds, heavier rainfall and unpredictable precipitation patterns making storm like Bualoi increasingly destructive.