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  General Situation    at 10:00 August 9, 2020  
The monsoon trough lies across the upper North and the upper Northeast to the active low-pressure cell over the upper South China Sea while the strong southwest monsoon across the Andaman Sea, Thailand and the Gulf of Thailand. Isolated heavy rains are likely over the North, the Northeast, the East and the South west coast regions. People in the North and the South west coast should beware of the severe conditions that may cause flash flood and water runoff.
The strong wind waves in the upper Andaman Sea and the Gulf of Thailand are likely 2-3 meters high in the Andaman Sea, about 2 meters high in the Gulf of Thailand and above 3 meters high in thundershowers. All ships should proceed with caution, and small boat in the Andaman sea keep ashore lasting 11 August.
The catalog 3 tropical storm “Jangmi” over the Pacific is expected to move to Taiwan and weakens by 10 August with no on Thailand.
  Bangkok Metropolis and Vicinity Forecast    From 12:00 today To 12:00 tomorrow  
Cloudy with scattered thundershowers. Minimum temperature 24-25 °C. Maximum temperature 32-34 °C. Southwesterly winds 10-25 km/hr.
More Details Issued Date August 9, 2020
  7 days Weather Forecast   August 9, 2020 - August 15, 2020  
     During 9 – 10 Aug, the strong monsoon though lies across the upper North and the upper Northeast. The strong southwest monsoon prevails across the Andaman Sea and the Gulf of Thailand. Isolated heavy rain is likely in the North, the Northeast, the East and the South. The strong wind waves are likely in the Andaman Sea and the Gulf of Thailand, 2-3 meters high in the Andaman Sea, about 2 meters high in the Gulf of Thailand and above 3 meters high in thundershowers. During 11 - 15 Aug, the monsoon though lies across Myanmar Laos and upper Vietnam. The southwest monsoon prevails across the Andaman Sea and the Gulf of Thailand will weakening. Continue rains are likely over the country and isolated heavy rain. The moderate wind waves are likely in the Andaman Sea and the Gulf of Thailand, about 2 meters high in the Andaman Sea, 1-2 meters high in the Gulf of Thailand. The catalog 2 storms (tropical depression) overs Pacific Ocean upgrade to catalog 3 storms (tropical storm “Jangmi”). It is expected to move up to Taiwan and downgrade on 10 Aug 2020. This storm does not affect Thailand.
     
Cautions
     During 8 – 11 Aug, people in the whole country should beware of severe conditions and stay tuned for the weather update. All ships should proceed with caution and small boat keep ashore including keeping away from thundershower.
Issued Date August 9, 2020
  7 day Weather Summary   July 31, 2020 - August 6, 2020  
The monsoon trough lay across the northern and upper northeastern parts toward the tropical depression over the coast of Hainan on 1 Aug. which later intensified into the tropical storm “SINLAKU (2003)” over the Gulf of Tonkin and made landfall over upper Vietnam in the morning of 2 Aug. It moved through Laos and downgraded into the tropical depression in the evening of the same day before entering Thailand over Nan province at 04:00 A.M. on 3 Aug. and finally degenerated into the active low pressure cell covering upper northern part and Myanmar. Moreover, the monsoon trough lay across upper northern part toward the low pressure cell over upper Vietnam during the second half of the period. In addition, the active southwest monsoon prevailed over the Andaman Sea, Thailand and the Gulf of Thailand almost the period. These conditions caused abundant rainfall over Thailand especially in the northern and northeastern parts that received heavy to very heavy rainfall in several areas with flash flooding in some areas.
Previous Issued Date August 7, 2020