The advisory, issued by TMD Director-General Wanchai Sakudomchai at 11am today (Sept 14), explained that tropical storm Vamco over the central South China Sea is expected to cause heavy deluges across most of Thailand.
Typhoon Vamco at last report was about 250km off Da Nang, Vietnam, with maximum sustained winds of 65kmh and moving west at a speed of 10kmh, said the advisory.
“It is forecast to make landfall over the central Vietnam on September 15,” it said.
The ensuing fallout is expected to cause heavy rains from across Thailand from September 15-18.
“All people in the Northeast, the East and the lower Central should beware heavy to very heavy rainfall in this period,” Mr Wanchai warned.
“The stronger wind waves of two to three metres high are likely in the Gulf of Thailand and the upper Andaman Sea. All ship in these areas should proceed with caution.”
An officer at the Southern Meteorological Centre (West Coast) said that stronger wind waves were expected all along the Andaman coast.
“The strengthening southwesterly winds will push waves up to two meters or higher in the waters off Ranong, Phang Nga, Krabi, Trang, Satun and Phuket,” he said.
Widespread thunder showers are expected to affect 70% of the area, with some areas experiencing southwesterly winds, and gusts, of 15-35kmh, the officer added.
“In general, Vamco won’t directly affect us,” he added. “It will just make the usual monsoon rains heavier. And its effects will be less on Friday and Saturday.”
Meanwhile, Mr Wanchai said the TMD will monitor the storm fallout and issue its next advisory at 5pm today.