The Meteorological Department is warning of heavy rain and flooding across the Northeast, Central Plains and the South after tropical storm Linfa moved in from the South China Sea into Vietnam yesterday.
The department said tropical storm Linfa made landfall in Quang Ngai, Vietnam yesterday, with sustained winds reported to be around 75 kilometres per hour.
The storm is moving west at a speed of 30km/h and is expected to weaken into a Category 2 tropical depression, before dissipating into a Category 1 active, low-pressure cell.
That said, the department said the weather system will cause widespread downpours and flooding in Mukdahan, Yasothon, Roi Et, Amnat Charoen, Nakhon Ratchasima, Surin, Buri Ram, Si Sa Ket and Ubon Ratchathani.
The system will strengthen the southwestern monsoon winds over the Andaman Sea and the Gulf of Thailand, bringing more rain towards the Central Plains, East and South until tomorrow.
As a result, more rain is to be expected across the lower Central Plains -- including Bangkok and its vicinity -- as well as the East and upper South today.
The winds are expected to whip up waves of up to 2-3 metres high, and higher during thunderstorms, across the Andaman Sea and the upper Gulf of Thailand, so large vessels have been advised to proceed with caution, while smaller boats have been told to stay ashore.
Samroeng Sangphuwong, deputy secretary-general of Office of the National Water Resources, said authorities will oversee flood mitigation in affected provinces.
In Nakhon Ratchasima's Pak Chong district, floodwater from Khao Yai National Park which devastated several communities along the Lam Takong River, has receded from one metre to 50 centimetres.
The storm filled up 66% of Lam Takong dam's capacity, Nakhon Ratchasima's governor said.