Bangkok Governor Chadchart Sittipunt has ordered city officials to remain on high alert and accelerate water drainage operations, following heavy overnight rainfall that left key eastern districts flooded.
Inspecting operations at the Bangkok Flood Prevention Centre in Din Daeng at 6am on Friday, Chadchart warned residents that continuous downpours are expected throughout the day as a low-pressure cell moves directly over the capital from Cambodia, drawn in by a passing monsoon trough.
The heaviest rainfall was recorded in Min Buri at 99mm, followed by Khlong Sam Wa, Lat Krabang, and Sai Mai.
The deluge caused surface flooding across several primary roads, including On Nut Soi 59, Suwinthawong, Luang Phaeng and King Kaew Road, where water levels reached 15 to 20cm.
Key canals in eastern Bangkok have hit critical levels, particularly Prawet Burirom Canal near On Nut Soi 17, Wat Khwang and Wat Krathum Suea Pla.
To relieve pressure, the Bangkok Metropolitan Administration (BMA) is pumping water through the Phra Khanong station into the Chao Phraya River, while simultaneously diverting flow eastward towards Chachoengsao via the Phra Ong Chao Chaiyanuchit Canal.
Meanwhile, conditions along the main stretch of the Chao Phraya River remain manageable.
Water levels at Pak Khlong Talat stood at 0.88m above mean sea level, well below the 3-metre flood wall, with a discharge rate of around 1,900m3/s.
The Meteorological Department predicts an 80% chance of rain with heavy to very heavy localised downpours across Greater Bangkok today.
Although the city's cumulative rainfall for 2026 currently stands at 983.5mm, lower than the same period last year, officials note a sharp upward trend in recent days.
"We are taking no chances, monitoring all weather forecasts and pumping out water at full capacity," Chadchart said.
