The National Water Resources Office (สทนช.) issued Notice No. 9/2569 warning of flash floods, waterlogging, river overflow and landslides from 5-7 October 2569 (2026). Bangkok and its vicinity, the central provinces, the East (including Chachoengsao, Chonburi, Rayong) and parts of the North and South are named. Large reservoirs above 80% capacity are being watched, and the Chao Phraya is releasing 2,500 cubic metres per second. For a shop or workshop in a low-lying area: move stock, equipment and vehicles up, check drainage, and plan for possible evacuation if warnings escalate. Follow the alerts closely.