Weekly Weather Summary
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September 11, 2017 - September 17, 2017Max. Rainfall AmountMax. Temperature
Thailand
The active low pressure cell over the eastern of Luzon, Philippines intensified into the tropical depression in the afternoon of September 11 and moved across center of Luzon Island to the middle South China Sea on the next day. It intensified into the tropical storm “DOKSURI” (1719) in the evening of the same day then moved into upper South China Sea and further intensified into a typhoon in the evening of September 14. DOKSURI made landfall over the Southern Vinh, Vietnam at 10.00 a.m. on September 15 then moved pass Laos and weakening into the tropical storm before entering Thailand at Bung Kan province at 10 p.m. on the same day. After that, it moved through Laos and downgraded into tropical depression then moved further into Nan province in the morning of September 16. It weakened gradually while moving pass upper northern Thailand and finally degenerated into the active low pressure cell over northern Thailand before moved to cover the coastal Myanmar and Gulf of Bengal on the last day of the week. In addition, the monsoon trough lay across upper Thailand during the first half of the week and the southwest monsoon which prevailed over the Andaman Sea and Thailand was strengthened during the middle and the end of the week. These conditions caused increasing in rainfall over upper Thailand during the second half of the week and plentiful of rainfall was observed in southern Thailand nearly the whole week.    
Northern Part
Isolated to scattered rain with heavy to very heavy rainfall in some areas during the first half of the week then fairly widespread to widespread rain with heavy to very heavy rainfall in some areas. Floods occurred at Phitsanulok and Phetchabun provinces on 16 Sep., Lampang and Chiang Rai provinces on 17 Sep. 169.4 mm at Wang Thong Phitsanulok on 15 Sep.  37.6 º C at Mueang Pichit on 14 Sep. 
Northeastern Part
Isolated to scattered rain with heavy rainfall in some areas during the first half of the week then fairly widespread to widespread rain with heavy to very heavy rainfall in some areas. Floods occurred at Kalasin province on 15 Sep and Chaiyaphum province on 17 Sep. 235.0 mm at Kuchinarai Self-Help Settlement Kalasin on 15 Sep.  36.1 º C at Chok Chai Nakhon Ratchasima on 14 Sep. 
Central Part
Fairly widespread to widespread rain with heavy rainfall in some areas except for isolated to scattered rain during 12-14 Sep. 79.1 mm at Mueang Lop Buri on 15 Sep.  37.0 º C at Mueang Chainat on 13 Sep. and at Mueang Suphan Buri on 14 Sep. and at Mueang Kanchanaburi on 14 Sep.  
Eastern Part
Widespread rain with heavy to very heavy rainfall in some areas except for isolated to scattered rain with heavy to very heavy rainfall in some areas on 12, 13 and 15 Sep. 157.9 mm at Klong Yai Trat on 11 Sep.  36.5 º C at Aranyaprathet Sa Kaew on 13 Sep. 
Southern Part (East Coast)
Scattered to fairly widespread rain throughout the week with heavy to very heavy rainfall in some areas. 93.0 mm at Ban Na Derm Surat Thani on 12 Sep.  38.6 º C at Nong Plub Agromet. Stn. Prachup Kirikhan on 14 Sep. 
Southern Part (West Coast)
Fairly widespread to widespread rain nearly the whole week with heavy to very heavy rainfall in some areas. Flood occurred at Satun province on 15 Sep. 152.9 mm at Takua Pa Phang-nga on 15 Sep.  34.8 º C at Trang Airport Trang on 12 Sep. 
Metropolitan
Fairly widespread to widespread rain with heavy rainfall in some areas except for scattered rain with heavy to very heavy rainfall in some areas on 12 and 13 Sep. 59.9 mm at Rattanakosin Sompoch Bang Khun Thian School Khet Bang Khun Thian on 13 Sep. ( 91.1 mm at Don Tum Nakhon Pathom on 12 Sep.)   37.1 º C at Bangna Agromet. Stn. Khet Bang Na on 14 Sep. (37.5 º C at Khlong Luang Pathumthani on 13 Sep.)  
Weekly total Rainfall and Weekly mean minimum temperature Map
Issued Date September 18, 2017