Weekly Weather Summary
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July 31, 2020 - August 6, 2020Max. Rainfall AmountMax. Temperature
Thailand
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.    
Northern Part
Fairly widespread rain almost the period especially widespread rain during the middle of the period with heavy to very heavy rainfall in several areas. Flash flood occurred at Lampang, Nan, Uttaradit, Phayao, Chiang Rai, Chiang Mai, Phrae and Phitsanulok provinces on 2 Aug. 198.5 mm at Chiang Klang Nan on 2 Aug. 
Northeastern Part
Widespread rain with heavy to very heavy rainfall in several areas during the first half of the period then fairly widespread with heavy to very heavy rainfall in some areas. Gusty wind occurred at Surin province on 1 Aug., at Amnat Charoen province on 2 Aug. Flash flood occurred at Loei, Nong Bua Lam Phu, Udon Thani, Nakhon Phanom and Kalasin provinces on 2 Aug. 350.4 mm at Mueang Bueng Kan on 2 Aug. 
Central Part
Isolated to scattered rain with heavy rainfall in some areas except for widespread rain with heavy to very heavy rainfall in some areas on 2 and 4 Aug. 134.3 mm at Ban Rai School, Thong Pha Phum Kanchanaburi on 4 Aug. 
Eastern Part
Isolated rain with heavy rainfall in some areas during the beginning of the period then widespread rain with heavy to very heavy rainfall in some areas. 157.0 mm at Ko Chang Trat on 3 Aug. 
Southern Part (East Coast)
Fairly widespread to widespread rain with heavy rainfall in several areas and very heavy rainfall in some areas during the beginning and the middle of the period then scattered rain with heavy rainfall in some areas. Gusty wind occurred at Surat Thani province on 1 Aug., at Nakhon Si Thammarat and Chumphon provinces on 2 Aug. 111.0 mm at Phato Chumphon on 2 Aug. 
Southern Part (West Coast)
Widespread rain with heavy to very heavy rainfall in some areas during the first half of the period then decreasing in rainfall to isolated to scattered rain with heavy rainfall in some areas. Gusty wind occurred at Phang-nga, Ranong and Phuket provinces on 2 Aug. 129.4 mm at Mueang Ranong on 1 Aug. 
Metropolitan
Isolated rain except for widespread rain during the middle of the period. Heavy rainfall was reported in some areas on 4 Aug. 40.0 mm at Wat Rachakosa School Khet Lat Krabang on 4 Aug. (80.0 mm at Nong Sua Pathum Thani on 4 Aug.)  
Weekly total Rainfall and Weekly mean minimum temperature Map
Issued Date August 7, 2020