Bangkok: The Department of Disaster Prevention and Mitigation has issued a warning for 15 provinces facing potential landslides due to persistent heavy rains. The National Disaster Prevention and Mitigation Center predicts that the heavy rainfall in the northern regions will persist until August 3rd.
According to Thai News Agency, the Department of Mineral Resources has cautioned residents in these high-risk provinces to remain alert for landslides and flash floods from July 30 to August 1. The warning is a response to ongoing heavy rains caused by a monsoon trough over northern and northeastern Thailand, coupled with a strong southwest monsoon. The Department of Mineral Resources has identified Tak, Mae Hong Son, Chiang Mai, Lamphun, Chiang Rai, Nan, Phayao, Phrae, Uttaradit, Phetchabun, Kanchanaburi, Chanthaburi, Trat, Ranong, and Phang Nga as areas needing close monitoring. If rainfall exceeds 150 millimeters within 24 hours or there is continuous rainfall over several days, the risk of landslides significantly increases.
The Water Resources Information Institute (Public Organization), or WRII, has also highlighted potential weather hazards, noting that from July 30 to August 3, 2026, the upper northern region faces a high likelihood of heavy rainfall. With accumulated rainfall already exceeding 150-200 millimeters in several areas, WRII has flagged Mae Hong Son, Chiang Rai, Phayao, Nan, Chiang Mai, Lampang, Phrae, and Uttaradit as areas of particular concern. These regions, especially the upstream areas and mountain slopes, are susceptible to flash floods, landslides, and mudslides.
Residents in at-risk regions are advised to stay informed of weather warnings, observe river patterns, and avoid traveling through high-risk zones. Preparations such as securing lighting equipment and being ready to evacuate to safe areas upon official notification are crucial for public safety.