Tropical storm Maysak is centred over China and will not enter Thailand, but is forecast to cause heavy rain in the North, upper Northeast and the East on Sunday and Monday.
Sugunyanee Yavinchan, director-general of the Meteorological Department, said on Sunday morning that severe tropical storm Maysak landed in Quang Ninh district, Vietnam, about 1am and reached Guangxi province in China about 4am. The storm was moving northeastwards and would not enter Thailand.
However, the storm's influence, coupled with the monsoon trough across the upper North and northern Laos, and the rather strong southwest monsoon over the Andaman Sea and the Gulf of Thailand would cause heavy to very heavy rain in the North, the Upper Northeast and the East on Sunday and Monday.
Ms Sugunyanee said small boats should stay ashore in the upper Andaman Sea where waves could reach two to three metres high or even more during thundershowers.
Meanwhile, the Mekong River level is rising. In Nakhon Phanom it was measured at 4.90 metres deep on Sunday morning, up by 80 centimetres on Saturday's level due to persistent rain in the area.
