The Meteorological Department forecasts heavy rain with thunderstorms over 60-70% of most regions today, with very heavy rain in parts of the north, northeast and east, and Bangkok about 60% covered. Flash floods and landslides are possible near streams and low-lying areas. Rough seas of 2-3 m, over 3 m in storm zones, mean small boats in the upper Andaman should stay in port. Shops and workshops in low-lying areas should move stock up, and delivery schedules should allow for flooded roads.