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  General Situation    at 16:00 November 17, 2018  
The moderate high-pressure over upper Vietnam and the South China Sea affect the humidity gathering in upper Thailand due to the southeasterly winds. Outbreaks of thundershower will be possible over the North, the Northeast, the Central and the East regions. The easterly wind prevails across the Gulf of Thailand and the South with outbreaks of continuous rainfalls over the area. People should beware of severe conditions. The low pressure cell in the middle South China Sea develop to tropical depression. It is expected that this storm will move to south of Vietnam and weaken into a low pressure cell before entering the Gulf and southern Thailand during 18-20 November 2018 causing more rain and Some heavy rain.
  Bangkok Metropolis and Vicinity Forecast    From 17:00 today To 17:00 tomorrow  
Cloudy with isolated thundershowers. Minimum temperature 25-27 °C. Maximum temperature 33-37 °C. Southeasterly winds 10-30 km/hr.
More Details Issued Date November 17, 2018
  7 days Weather Forecast   November 17, 2018 - November 23, 2018  
     During 17-21 Nov, The moderate high pressure from China covers Vietnam and the South China Sea cause the southeasterly winds bring the moist air into the lower Northeast, the East, the Central, and the North regions. Thundershowers are likely occur in the upper Thailand. During 19-21 Nov, the active low pressure cell over the middle South China Sea becomes tropical depression and will move pass lower Vietnam. It is expected to downgrade to the low pressure before moving to the Gulf of Thailand and the lower South. More rain and isolated heavy rain are likely over the areas. During 22-23 Nov, another moderate high pressure area form China will extend to the upper North, the Northeast and the South China Sea. Isolated thundershowers in the first after that temperature drop 1-3 °C.
     
Cautions
     During 17-21 Nov, farmers in upper Thailand should prepare for crops damaged with possible rainfall. People in the South should beware of severe conditions. During 22-23 Nov, All ships over the Gulf should proceed with cautions.
Issued Date November 17, 2018
  7 day Weather Summary   November 9, 2018 - November 15, 2018  
The weak high pressure area covered upper northern, upper northeastern and the South China Sea accompanied with the southeasterly wind prevailed over upper Thailand almost the whole period. These conditions caused increasing in temperature over upper Thailand with unusual rainfall. In southern part, the active northeast monsoon prevailed over the Gulf of Thailand and southern part during early period then weakened. In addition, the active low pressure cell that covered the southern part moved to the Andaman Sea on the first day of the period together with, easterly wind prevailed over the southern part and the Gulf of Thailand on the last day of the period. These caused rainfall almost the whole period in southern part especially on the first day of the period that obtained heavy to very heavy rainfall in several areas.
Previous Issued Date November 16, 2018