Authorities are urging caution in northern and upper northeastern Thailand, where heavy rainfall and overflowing rivers remain likely over the next couple of days, despite Typhoon Bualoi having weakened into a strong low-pressure system.
The Thai Meteorological Department reported on Tuesday that Bualoi, now centred over northern Myanmar and Laos, is moving along the monsoon trough affecting upper northern Thailand.
The storm, combined with the strong southwest monsoon over the Andaman Sea and the Gulf of Thailand, will continue to bring heavy rain.
Forecasters say high-risk provinces include Mae Hong Son, Chiang Mai, Chiang Rai, Lampang, Phayao, Nan, Phrae, Uttaradit, Sukhothai, Loei, Nong Khai, Bueng Kan and Udon Thani.
Conditions are expected to gradually ease after Thursday.
In Uttaradit, river embankments broke and floods swept through three districts – Nam Pat, Thong Saen Khan, and Tha Pla – around 2am on Tuesday.
Governor Sirivat Bupphacharoen called an emergency meeting, ordering evacuations and full assistance for residents.
The local Disaster Prevention and Mitigation Office has also deployed boats and supplies, while highways near Ton Sak Yai National Park and the Sirikit Dam were closed because of landslides and power pole collapses.
Phu Soi Dao National Park has been temporarily closed due to heavy rain and landslides.
In Mae Hong Son, Mae Sariang district was hit hard. Flash floods from the overflowing Yuam River were reported to have damaged homes, farmland and bridges.
A 38-year-old woman died when a landslide buried her house.
Flooding was also reported in Baan Sob Harn at tambon Baan Kat, leaving some villages cut off.
Other flooded districts include Muang and Mae La Noi. The inundation impacted 36 villages in six sub-districts.
Local agencies, along with the military and volunteers, have set up relief kitchens and are delivering urgent aid.
In Phetchabun, flash floods struck Lom Sak and Lom Kao districts, submerging over 1,000 homes. Reservoirs also overflowed.