Urgent Warning: 5 Provinces in Upper Northeastern Thailand Marked Red for Highest Flood Risks—Sakon Nakhon Most Severely Affected

Urgent alert "5 Provinces" Marked Red Zones Upper Northeastern Thailand faces risks of stagnant and flash floods; Sakon Nakhon under closest watch as most severe

On 20 Aug 2026 at 16:32 GMT+7, the latest data from the app "Check Water" (based on GISTDA satellite data) indicates that the upper northeast is clearly experiencing widespread risks of stagnant and flash flooding. The dense red zones (high risk) have expanded into a large "red area," especially in 5 provinces requiring special attention as the highest risk areas for close monitoring.

• Sakon Nakhon – The widest red zone coverage, particularly around the Nong Han basin and central province areas, marking it as the current risk epicenter.

• Nong Khai and Bueng Kan – Dense red zones along the border areas by the Mekong River and inner catchment areas, facing risks of riverbank overflow and flash floods.

• Nakhon Phanom – Red zones stretch along tributary basins in the northern and central parts of the province.
• Udon Thani – Dense red zones on the eastern side, directly connected with Nong Khai and Sakon Nakhon, with lower areas beginning to show warning signs.

Meanwhile, Kalasin, Mukdahan, and Yasothon – Starting to show scattered red spots and yellow triangle warnings in some districts. Although not as dense as the upper northeast, close monitoring is advised.

This analysis comes from highly accurate, real-time updated satellite imagery by GISTDA, making it a reliable tool for assessing the situation. The advice for residents in risk zones is not to panic but to use this time for calm and mindful preparation as follows:

• Monitor water levels around homes and evacuation routes.
• Keep valuables in high places and prepare survival kits.
• Follow water movement, danger alerts, and local developments 24/7 through the application "Check Water"

Information from the Facebook page of GISTDA, Geo-Informatics and Space Technology Development Agency (Public Organization)