BANGKOK, Thailand – Thailand’s Meteorological Department has confirmed forecasts of heavy to very heavy rain in several parts of the country from September 23–27, but said claims circulating online about a “mega flood in the next 120 hours” do not match its official forecast data. Nattawut Dandee, Deputy Director-General of the Meteorological Department’s Academic Affairs Division, addressed the issue during a media briefing at the Weather Forecast Operations Centre on September 22. He said Thailand is expected to experience heavy rain in many areas and very heavy rain in some locations during September 23–27, driven by a strengthening low-pressure system, monsoon trough and stronger southwest monsoon.
However, Nattawut said descriptions of a “mega flood” or claims that heavy rain would continue throughout the day and night are not consistent with the department’s forecast information.
The main concerns are heavy rainfall and accumulated rainfall, which could lead to flash floods, runoff from hills and mountains, and flooding in low-lying or other vulnerable areas. The department said the North, lower Northeast, East, Central region, Bangkok and surrounding provinces, along with other areas near the monsoon trough, should continue monitoring conditions for heavy to very heavy rain during the period.
Winds and waves in the Andaman Sea and Gulf of Thailand are also expected to strengthen.
The Meteorological Department advised the public to follow official weather announcements and forecasts closely and avoid panic over information shared on social media without checking its source. The department said weather conditions can change and urged people in areas vulnerable to flooding and runoff to remain alert while relying on official updates.
