Thai Meteorological Department Issues Flash Flood Warning for Southern Provinces Amid Heavy Rain Forecast

Key summary

The Thai Meteorological Department (TMD) warned on October 26, 2026, that continued rainfall could trigger flash floods in southern Thailand, with very heavy downpours expected in parts of six provinces. The 24-hour forecast covers the period from 6am on October 26 to 6am on October 27. Residents are advised to avoid low-lying areas and foothill slopes near waterways due to risks of rapid run-off. Thunderstorms, strong gusts, heavy rain, and possible lightning are also forecast for upper Thailand, the Northeast, North, Central region, East, and Bangkok. A high-pressure system or cold air mass from China is expected to extend over upper Thailand and the South China Sea, while easterly winds will carry moisture into upper Thailand and the upper South. Waves in the Andaman Sea and Gulf of Thailand could exceed 2 metres during thunderstorms. Boat operators are advised to navigate cautiously and avoid sailing through storms.