The Thai Meteorological Department forecasts heavy to very heavy rain in the North and Northeast over the next 24 hours, with flash floods and mountain runoff possible, especially near the Mekong and low-lying areas. Bangkok and the Central region expect thunderstorms over about 60% of the area. Sea waves reach about 2 metres in the Andaman Sea and Gulf of Thailand, so small boat operators should avoid storm zones. For businesses: check stock and delivery routes in flood-prone spots, move goods off ground floors, and plan for delayed transport.