The Thaiger
Thailand flash flood warning covers 24 provinces to September 8
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The National Water Resources Office (NWR) issued a flash flood warning for 24 provinces in Thailand, covering September 4 to 8, 2026. The watch applies to the North, the Northeast and the East. It also covers waterlogging.
Key facts
- The National Water Resources Office (NWR) issued a flash flood warning for 24 provinces in Thailand, covering September 4 to 8, 2026
- NWR attributed the risk to a monsoon trough crossing the North and the upper Northeast
- The North accounts for eleven of the 24.
- Heavier rain is the direct trigger, NWR explained
Summary
NWR attributed the risk to a monsoon trough crossing the North and the upper Northeast. A moderate southwest monsoon is covering the Andaman Sea, Thailand and the Gulf of Thailand at the same time. The two systems overlap across the watch period. The office published the notice on its Facebook page on September 4.
Heavier rain is the direct trigger, NWR explained. The office expects heavy to very heavy rain to accumulate in the areas named over the five days. It framed the notice as a call for vigilance across that period.