Department of Disaster Prevention Issues Warning for 61 Provinces to Monitor Flash Floods, Landslides, and Strong Winds from 26-30 Jul 2026

The Department of Disaster Prevention and Mitigation (DDPM) has issued warnings for 61 provinces to monitor flash floods, sudden flooding, waterlogging, landslides, and strong winds during 26-30 July 2026. Check which areas are affected.

On 26 July 2026, the Department of Disaster Prevention and Mitigation (DDPM) announced that 61 provinces must watch for flash floods, sudden flooding, waterlogging, landslides, and strong winds from 26 to 30 July 2026. Teams and heavy machinery should be deployed to high-risk locations to assist people immediately when disasters occur, especially in frequently flood-affected areas. Early warnings will be issued to the public, who are urged to follow government advice.

Mr. Theerapat Kachamat, Director-General of the Department of Disaster Prevention and Mitigation, stated that the Central Disaster Prevention and Mitigation Operations Center has been monitoring weather conditions and risk factors. The Meteorological Department issued its second announcement (No. 129/2569) on 24 July 2026 at 05:00 warning of heavy to very heavy rainfall over Thailand between 26 and 30 July 2026. This is due to a monsoon trough over northern Thailand, Laos, and northern Vietnam.

Additionally, the southwest monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand will strengthen. The sea in the upper Andaman region will be quite rough with waves 2-3 meters high, exceeding 3 meters in thunderstorm areas. The upper Gulf of Thailand and lower Andaman Sea will have waves around 2 meters, rising above 2 meters during thunderstorms. Heavy rain is expected, raising risks of flash floods, sudden floods, waterlogging, landslides, and strong winds from 26 to 30 July 2026, detailed as follows.

Areas under watch for flash floods, sudden flooding, waterlogging, and landslides.

• Northern region: 14 provinces. Including Mae Hong Son, Chiang Mai, Chiang Rai, Phayao, Nan, Uttaradit, Tak, Sukhothai, Kamphaeng Phet, Phitsanulok, Phichit, Phetchabun, Nakhon Sawan, and Uthai Thani.
• Northeastern region: 18 provinces. Including Loei, Nong Khai, Bueng Kan, Nong Bua Lamphu, Udon Thani, Sakon Nakhon, Nakhon Phanom, Chaiyaphum, Khon Kaen, Kalasin, Mukdahan, Roi Et, Yasothon, Amnat Charoen, Nakhon Ratchasima, Buriram, Sisaket, and Ubon Ratchathani.
• Central region: 20 provinces. Including Kanchanaburi, Ratchaburi, Phra Nakhon Si Ayutthaya, Lopburi, Saraburi, Nakhon Nayok, Prachinburi, Sa Kaeo, Chachoengsao, Chonburi, Rayong, Chanthaburi, Trat, Phetchaburi, Prachuap Khiri Khan, Pathum Thani, Nonthaburi, Nakhon Pathom, Samut Sakhon, and Samut Prakan.
• Southern region: 9 provinces. Including Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Ranong, Phang Nga, Phuket, Krabi, and Trang.

Areas monitored for strong winds and rough seas.

• Southern region: 3 provinces. Including Ranong (Mueang Ranong, Suk Samran, and Kapoe districts), Phang Nga (Ko Yao, Takua Thung, Thai Muang, Takua Pa, and Khura Buri districts), and all districts of Phuket.

The Central Disaster Prevention and Mitigation Operations Center, under the Department of Disaster Prevention and Mitigation, has coordinated with 61 provinces in the North, Northeast, Central, and South regions, as well as regional disaster prevention centers in risk areas, to prepare for increased and heavy rainfall. Officials are instructed to closely monitor weather, rainfall, and water conditions, and to station response teams with heavy equipment at high-risk sites to promptly assist people.

Particular attention is given to natural tourist sites such as caves and waterfalls. If hazards are likely, authorities should issue warnings and restrict access. In cases of strong winds and rough seas, related agencies must announce or install warning signals along coastlines, strictly prohibiting tourists from swimming. Fishermen, boat operators, and passenger vessel services are advised to exercise increased caution while navigating.

If the situation worsens, a total ban on navigation should be considered. Officials will monitor risky areas and provide immediate assistance around the clock. Provinces are urged to inform the public to closely follow official information and issue early warnings to residents in vulnerable zones so they can prepare and adhere strictly to government guidance.

The public can follow warning news via the THA DISASTER ALERT application and report emergencies through the LINE account “DDPM Emergency 1784” or the 24-hour hotline 1784 for coordinated assistance.