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August 2014
The southwest monsoon prevailed over the Andaman Sea, Thailand and the Gulf of Thailand throughout the month. The monsoon trough lay across Myanmar, Laos and upper Vietnam during early and mid-month. After that it moved southward to lie across the northern, central and northeastern parts toward the low pressure cell in the Gulf of Tonkin coupled with the covering of low pressure cell over the northern part of Thailand for few days. These caused fairy widespread rain especially during late month that downpour of rain occurred in much of upper Thailand. In southern Thailand, abundant rainfall was periodically observed with isolated heavy to very heavy rainfall mainly along the west coast. The total rainfall over Thailand in August was 4 percent higher than normal with above normal in most parts of Thailand i.e. northern part 20.9 mm (9%), central part 13.0 mm (7%), southern part (east coast) 16.7 mm (13%) and southern part (west coast) 46.9 mm (12%) except for below normal in northeastern part 5.3 mm (2%) and eastern part 17.1 mm (6%). Mean temperatures were above normal in almost areas.
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Issued at September 9, 2014
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