Bangkok Governor Chadchart Sittipunt issued an official emergency declaration on Friday (September 25, 2026), confirming that the capital recorded over 300 millimeters of rainfall since Thursday. The severe deluge has overwhelmed the city’s drainage capacity, with eastern Bangkok experiencing the worst conditions as municipal canals reach full capacity. Drainage pumps operating at maximum output have proven largely ineffective due to overflowing waterways, prompting city officials to warn residents along canal banks of rising flood risks and advising bedridden medical patients to seek temporary hospital relocation. Local business owners reported waist-deep floodwaters in central districts, comparing the rapid inundation to Thailand’s catastrophic 2011 floods that killed over 500 people. With meteorological forecasts predicting continued precipitation across central Thailand, municipal authorities remain on high alert to mitigate further urban submergence.