The government is closely monitoring ongoing rainfall and has warned 12 provinces at risk. The Meteorological Department expects 60–70% rain coverage in the North and Northeast from 10–16 August, with risks of flash floods, forest runoff, and riverbank overflows. The Irrigation Department has been instructed to prepare immediately to assist the public.
On 13 August 2026, Second Lieutenant Phatdarasmi Thongsaluaykorn, Deputy Spokesperson of the Office of the Prime Minister, stated that the government is closely tracking rain and water conditions as Thailand continues to experience ongoing and heavy rainfall in some areas, especially in the North and Northeast. She emphasized that the Irrigation Department has been instructed to ready machinery, water pumps, equipment, and personnel to promptly assist the public if flooding occurs.
The Irrigation Department reported that a monsoon trough extends across the upper North and northern Laos, combined with a relatively strong southwest monsoon, causing several areas to be on alert for heavy to very heavy rain and accumulated rainfall. This may lead to flash floods, forest runoff, and riverbank overflows, particularly in foothill areas, locations near waterways, and low-lying zones.
The Meteorological Department forecasts that from 10–16 August 2026, the North and Northeast will experience thunderstorms covering 60–70% of the area, with heavy rain in some places throughout the period. Meanwhile, the Central region will have thunderstorms over 40–60% of the area, with some heavy rain. The Eastern region will see thunderstorms covering 60–70% of the area on 10–11 August, decreasing to 40–60% from 12–16 August, with ongoing vigilance for heavy rain in some locations.
The 12 provinces requiring special monitoring are Chiang Rai, Chiang Mai, Mae Hong Son, Nan, Mukdahan, Saraburi, Roi Et, Yasothon, Nakhon Phanom, Udon Thani, Phitsanulok, and Amnat Charoen. Local agencies have been instructed to continuously monitor the situation, assess impacts, and prepare machinery, water pumps, and equipment to be ready to assist in high-risk areas.
Regarding the Chao Phraya River basin, the Irrigation Department continues to closely monitor upstream water levels and rainfall, managing water resources accordingly to minimize impacts on downstream areas.
Second Lieutenant Phatdarasmi advised residents in monitored areas—especially those in lowlands, riversides, foothills, and historically flood-prone zones—to closely follow official warnings. If heavy rain persists or water levels rise, they should prepare to move belongings, tools, and agricultural equipment to higher ground and be ready in advance for possible flooding.
The Irrigation Department will continue to monitor water and weather conditions closely, coordinating with relevant agencies to provide timely assistance to people in high-risk areas to prevent and reduce the impact of heavy rain and flooding as much as possible.