"Cold spells over upper Country and heavy rain with strong winds in South "
No. 4 Time Issued December 16, 2017
The strong high pressure over the Northeast of Thailand is forecast to cover the North, the Central and the East tonight of 16 December. Cooler spell will be likely with strong wind. During 16-18 December, temperature will decrease by 6-8 °C in the upper country including Bangkok and its vicinity. The mountaintops get very cold spell with isolated frost. People should keep healthy. The South will get more rain with rough sea 2-3 meter high in the lower Gulf. Inshore surges are still watched for the Gulf side. All ships should proceed with caution and small boats should keep ashore.
During 19-21 December, another strong high pressure from China will extend to upper Thailand. Outbreaks of continuous cold spells will be likely with a decrease of temperature by 2-3 °C. The wind waves in the gulf will be expected 2-4 meters high. Inshore surge and rough seas conditions remain while distribution of rainfall tends to reduce.
The advisory is effect on 16 December 2017, at 11.00 a.m.
The next issue will be at 17 December 2017, at 11.00 a.m.
(Signed) Wanchai Sakudomchai
(Mr. Wanchai Sakudomchai)
Thai Meteorological Department