Thailand's ONWR Warns 28 Provinces of Flash Floods, Run-off, and Landslides

The Office of the National Water Resources (ONWR) has issued a warning for waterlogging, flash floods, rapid run-off, and landslides across five regions and 28 provinces in Thailand from September 15 to 19, 2026. Monsoon conditions are bringing heavy to very heavy downpours, and authorities are urged to monitor small and medium-sized reservoirs.