Heavy rains have been forecast for Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, Yala and Narathiwat.

&ldquo;All boats and water vessels should proceed with caution, preferably remain anchored as thundershowers are expected to push waves up to three metres,&rdquo; the office said on Friday, citing the Meteorological Department.

People have been advised to follow the weather forecast and updates from government agencies regularly.

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Heavy rains, flash flooding forecast for 8 southern provinces this weekend

Eight provinces in the South may suffer flash flooding from heavy rains expected to hit the region for four days from Friday, the Phatthalung Office of Disaster Prevention and Mitigation said.