Heavy rain and flash flood warnings were issued for all southern provinces except Chumphon and Ranong on Thursday, and small boats were advised to stay ashore until Friday.
The Meteorological Department said the strong northeast monsoon prevailed over the Gulf of Thailand and the South, and a low pressure cell still covered the lower South.
More heavy rain was likely in Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, Yala, Narathiwat, Phangnga, Phuket, Krabi, Trang and Satun on Thursday.
People living in at-risk areas, notably foothill slopes and low-lying areas, were told to prepare for downpours that may trigger runoff and flash floods.
Winds in the Gulf and the Andaman Sea were forecast to whip up waves 2-3 metres high, and higher during thundershowers.
All ships in the Gulf should proceed with caution. Small boats were advised to remain ashore.
The Department of Disaster Prevention and Mitigation on Thursday reported that flooding persisted in seven southern provinces – Surat Thanhi, Nakhon Si Thammarat, Phatthalung, Trang, Songkhla, Pattani and Narathiwat.
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