TMD Warns of Heavy Rain, Flash Floods in Southern Thailand
The Thai Meteorological Department has issued a severe weather warning for Southern Thailand, forecasting heavy to very heavy rain on November 12-13, 2026, with risks of flash floods and mudslides. Rough seas with waves up to 3 meters are expected in the Gulf of Thailand and Andaman Sea, prompting advisories for small boats to remain in port. The public is urged to monitor official updates and plan travel cautiously.
The Thai Meteorological Department issued Announcement No. 8 warning of heavy to very heavy rain across Southern Thailand from November 12-13, 2026, urging the public to beware of flash floods and mudslides, especially in foothill areas near waterways and lowlands. Strong winds are whipping up waves 2-3 meters high in the lower Gulf of Thailand and over 3 meters in thunderstorm areas on the Andaman Sea. Small boats in the lower Gulf should stay ashore, and all vessels should avoid thunderstorm zones. Cool mornings persist nationwide with isolated rain in the North, prompting health and crop advisories. The pattern is driven by a strong high-pressure system from China covering upper Thailand and the South China Sea, combined with westerly winds crossing Myanmar, upper Thailand, and upper Laos, while the moderate northeast monsoon prevails over the Gulf, South, and Andaman Sea. For safety, the public should plan travel and activities carefully during this period and monitor continuous updates via the TMD website https://tmd.go.th or hotlines 0-2399-4012-13 and 1182, available 24 hours. The next announcement will be issued at 17:00 on November 12, 2026. Provinces expected to see very heavy rain on November 12: Chumphon, Surat Thani, Nakhon Si Thammarat. Heavy rain on November 12: Phatthalung, Songkhla, Pattani, Yala, Narathiwat, Ranong, Phang Nga, Phuket, Krabi, Trang, Satun. Very heavy rain on November 13: Surat Thani, Nakhon Si Thammarat. Heavy rain on November 13: Phetchaburi, Prachuap Khiri Khan, Chumphon, Phatthalung, Songkhla, Pattani, Yala, Narathiwat, Ranong, Phang Nga, Krabi, Trang, Satun.
