BANGKOK: The Thai Meteorological Department (TMD) has forecast increased rainfall across Thailand on Friday (Sept 4), with isolated heavy rain and very heavy falls possible in the upper North and eastern Northeast.
The regional forecast names 45 provinces and lists Bangkok separately.
Heavy rain is explicitly forecast in 38 provinces, while seven provinces on the southern east coast are identified as the main areas for thunderstorms.
The 24-hour forecast runs from 6am on Friday to 6am on Saturday (Sept 5).
A monsoon trough has moved southwards across the North and upper Northeast before extending into a low-pressure area over the Gulf of Tonkin.
A moderate southwest monsoon is also prevailing over the Andaman Sea, Thailand and the Gulf of Thailand.
The TMD warned that heavy and accumulated rainfall could trigger flash floods and rapid run-off, particularly in the Mekong River basin, on foothills near waterways and in low-lying areas.
People should avoid routes that regularly flood, especially low-lying roads where temporary waterlogging could develop quickly.
Sea conditions in the Andaman Sea and Gulf of Thailand are moderate.
Waves in the upper Andaman Sea will be about two metres high and exceed two metres during thunderstorms.
Mariners should proceed cautiously and avoid sailing in areas affected by thunderstorms.
The TMD also said Depression Saudel over Guangdong province in China had weakened into an active low-pressure area. - The Nation/ANN
