Rescue teams saved residents stranded on roofs while escaping floods caused by Typhoon Bualoi in northern Thailand.

Dozens of disaster responders evacuated the trapped villagers on boats as heavy flooding hit Uttaradit on Tuesday.

Footage shows crews battling through the during the relief efforts hampered by strong currents and poor visibility.

More than 2,000 households across three districts were affected, with rescuers finding families begging for food and water.

Officials said the floods were the 'worst in four decades' as more boats and supplies were being delivered to the stricken communities.

Bualoi struck Vietnam early Monday morning, with winds reaching 130 km per hour, leaving at least 19 people dead and 88 others injured.

Authorities confirmed that Bualoi triggered at least eight tornadoes across several provinces in Vietnam, including Nam Dinh, Ninh Binh, Hai Phong, Hai Duong, Thanh Hoa, Thai Binh, Quang Ninh, and Hanoi.

In Ninh Binh, the extreme weather left nine people dead and 18 injured. Eleven single-storey houses collapsed, 126 homes were damaged, and 53 utility poles were brought down.

Bualoi had previously caused at least 20 deaths in the Philippines and forced hundreds of thousands of families into evacuation centres.

The Thai Meteorological Department said Bualoi has been downgraded to an active low-pressure system over Laos. It was expected to cause heavy rainfall and flooding in northern regions while moving along the monsoon trough across the region.

The Department of Disaster Prevention and Mitigation said at least seven were killed in floods in Thailand.