Typhoon Bualoi has unleashed widespread flooding across the country, with Ayutthaya, Phimai in Nakhon Ratchasima, and Sa Kaeo among the hardest hit.
The Chao Phraya barrage in Chai Nat has increased its discharge rate from 2,100 to 2,200 cubic metres per second to cope with rising inflows caused by the typhoon.
The surge has led to heavy flooding in 11 districts of downstream Ayutthaya, affecting 38,132 households, two mosques, 20 schools, 25 temples, and 165 rai of farmland. Water levels in tributaries and canals have risen by an average of 5cm.
Local ferry services along the Chao Phraya River, especially near Wat Khun Phrom and Ko Muang, remain operational but face strong currents and high water levels. Authorities have posted warnings urging boat operators and passengers to exercise caution. Impact zones in Ayutthaya were located in 134 tambons and 758 villages, with flooding reported in 34 community roads and eight government buildings. Agricultural damage includes rice paddies, fruit crops, and perennial trees.
In Phimai district of Nakhon Ratchasima, heavy rainfall inundated many areas of the district for the third time this season. Kindergarten classes at Kulno School were suspended, while grades 4-6 continue in-person study due to ongoing exams.
Phimai New Town Market is under 20-30cm of water, forcing vendors to wade through floodwaters or temporarily close shops. The Phimai Historical Park has also suspended tourist access due to flooding around the ancient Khmer temple.
In Sa Kaeo, at 1am, flash floods from Pang Sida National Park swept through Khlong Buri village, catching residents off guard. Villagers were rescued by local officials using tractors, leaving behind damaged belongings. The village, located near the park and downstream of Khlong Phra Prong Reservoir, was overwhelmed by rapid runoff that could not drain off in time. No casualties were reported.
Meanwhile, the Thai Meteorological Department (TMD) issued a weather update on Monday for Typhoon Bualoi, which has reportedly weakened over Laos.
The department confirmed that the typhoon made landfall in Quang Binh, northern Vietnam, and weakened into a strong tropical storm. As of 4am on Monday, its centre was located 50km east of Xieng Khouang, Laos, with maximum winds of 111 km/h, moving west-northwest at 20 km/h. It is expected to weaken further into a depression and then a low-pressure system.
The TMD also forecast heavy to very heavy rainfall in the lower North, upper Central, Northeast, East, and western South with the risk of flash floods, runoff, and riverbank overflow, especially in foothill areas and flood-prone zones. Strong winds are expected in the upper Andaman Sea and Gulf of Thailand, with wave heights of two to three metres, or higher during thunderstorms.