A depression in the upper South China Sea has intensified into Tropical Storm Mun and will cause rainstorms throughout the country on Wednesday and Thursday, the Meteorological Department said on Wednesday.
Director-general Phuwieng Prakhammintara said Mun, with wind speeds about 65 kilometres per hour, was moving westwards at 20 kph.
It could land in northern Vietnam and China either on Wednesday or Thursday, and would generate rainstorms in the North, the Northeast, the Central Plains and the South of Thailand.
He also warned small boats should remain ashore as the strong southwestern monsoon continues to cover the Andaman Sea and the Gulf of Thailand.