Weekly Weather Summary
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June 7, 2021 - June 13, 2021Max. Rainfall AmountMax. Temperature
Thailand
The active southwest monsoon prevailed over the Andaman Sea, Thailand and the Gulf of Thailand almost the week associated with the monsoon trough lay across the upper northern part and upper Laos almost the week and lay across to the tropical storm “KOGUMA” (2104) on the last day of the week. This tropical storm formed as the active low pressure cell over the upper South China Sea and intensified to the tropical depression in the afternoon of 11 Jun. then moved west-northwestwards and reached to the tropical storm namely “KOGUMA” over the Gulf of Tonkin, Vietnam in the afternoon of 12 Jun. before made landfall over Thanh Ho, Vietnam in the morning of 13 Jun. It weakened into tropical depression in the evening on the same day whereas the center of this storm stayed about 140 km away from the northeastern portion of Chiang Rai, Thailand. These conditions caused increasing in both amount and distribution of rainfall from last week over Thailand especially in the northern, northeastern and southern (west coast) parts obtained abundant rainfall nearly the whole week.    
Northern Part
Scattered to fairly widespread rain except for widespread rain on 8, 9 and 13 Jun. Heavy rainfall occurred in some areas almost the week and very heavy rainfall in some areas on the last day of the week. Thunderstorms with gusty wind occurred at Chiang Mai province on 9 Jun. 162.0 mm at Bo Kluae Nan on 13 Jun.   
Northeastern Part
Fairly widespread rain almost the week with heavy to very heavy rainfall in some areas almost the week. Flood occurred at Kalasin province on 10 Jun. 156.5 mm at Si Songkhram Nakhon Phanom on 7 Jun.   
Central Part
Isolated to scattered rain except for fairly widespread rain on 8, 9 and 13 Jun. Heavy rainfall occurred in some areas on 9 and 11 Jun. 62.5 mm at Ban Nong Makha School Lop Buri on 11 Jun.   
Eastern Part
Fairly widespread rain except for scattered rain on 7, 10 and 12 Jun. Heavy rainfall occurred in some areas almost the week and very heavy rainfall in some areas during the first half of the week. 144.1 mm at Mueang Trat on 7 Jun.   
Southern Part (East Coast)
Scattered to fairly widespread rain with heavy rainfall in some areas almost the week. Gusty wind occurred at Pattani province on 9 Jun. and at Chumphon province on 11 Jun. 72.6 mm at Phato Chumphon on 11 Jun.   
Southern Part (West Coast)
Widespread rain except for fairly widespread rain during early week. Heavy rainfall occurred in some areas almost the week and very heavy rainfall in some areas on 9 Jun. Gusty wind occurred at Ranong province on 8, 11 and 12 Jun. and at Phang-nga province on 11 Jun. 150.4 mm at Kapoe Ranong on 9 Jun.   
Metropolitan
Fairly widespread to widespread rain almost the week with heavy rainfall in some areas on the last day of the week. 42.0 mm at Ban Lat Phrao School Khet Chatuchak on 13 Jun. (23.6 mm at Nong Sua Pathum Thani on 9 Jun.)    
Weekly total Rainfall and Weekly mean minimum temperature Map
Issued Date June 14, 2021