Tropical Storm Pabuk is set to bring 40mph winds, heavy rains and dangerously high waves to a number of tourist spots on Friday, including the islands of Koh Phangan and Koh Tao.
Tens of thousands of tourists have reportedly escaped popular resort islands in Thailand ahead of the first tropical storm to hit the country's southern shores in almost 30 years.
Thai authorities suspended ferry services and began evacuations on Thursday as the storm bears down during the country's peak tourism season.
Rain was already falling around the Gulf of Thailand and officials warned that torrential downpours, strong winds and rough seas were expected in 16 provinces when Pabuk makes landfall late on Friday.
There are fears that the storm will be the worst to hit Thailand since 1989, when Typhoon Gay left more than 400 dead.
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Tropical Storm Pabuk is expected to hit Thailand around 7pm local time on Friday near Chumphon archipelago on the eastern border of Surat Thani and Nakhon Is Thammarat provinces. Heavy rainfall is anticipated to arrive in a few hours.
Several popular tourist sites are expected to affected: Koh Samui, Koh Phangan, Koh Tao, Phuket, and Koh Phi Phi to name a few.
"We are still compiling the number of evacuees. I can say several thousand people for over 16 provinces," Putthipong Punnakanta, a spokesman for the Thai government, told CNN.
"It is high season, there are many foreign tourists at popular destinations. We have informed them in advance since two days ago. I would say most of them have left islands and come to the mainland."
Evacuations are under way as Thailand prepares for Storm Pabuk to pound its southern beach resorts. Ferry services have been suspended in the region and evacuation centres have been set up in the areas expected to bear the brunt of the weather event.

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Twitter“This is apparently 4 Hours away be safe out there Koh Samui Thailand #stormpabuk #kohsamui #kosamui #samui #stormthailand https://t.co/G2pBQgkMSZ”
TreetopMe on Twitter
Twitter“What’s happening? Well a great big bloody storm is heading my way. #pabuk It’s all calm on the east coast of Koh Phangan for now. I’ve got no hatches to batten. At times like this walls might come in handy...”Please allow a moment for the liveblog to load