On March 11, 2025, the Department of Meteorology issued warnings for thunderstorms affecting 11 provinces across Thailand, anticipating heavy rain covering 40% of the area, especially upper Thailand and Bangkok, where temperatures are soaring as high as 39 degrees Celsius.
The Meteorology Department's forecast indicated a sweltering day for upper Thailand, where heat and humidity are being compounded by low atmospheric pressure. The influx of moisture from the South China Sea and the Gulf of Thailand contributed to the deteriorative weather conditions reported across the region. Notably, the department predicted possible thunderstorms within 24 hours, with specific advisories issued for health precautions due to the extreme heat.
Temperature ranges are also noteworthy. For upper Thailand, forecasts suggest lows between 21-25 degrees Celsius during the night, but soaring as high as 35-39 degrees Celsius during the day, combined with moderate winds of 5-15 km/h. Meanwhile, upper Isan temperatures are expected to remain from 20-25 degrees Celsius at night, and peak between 35-38 degrees Celsius during the day, with wind speeds of 10-20 km/h.
The central region faces similar conditions, with night-time lows of 25-27 degrees Celsius and daytime highs pushing 36-39 degrees Celsius. Thunderstorms are also anticipated, which may exacerbate the situation with heavy rainfall.
Detailed forecasts from the Department of Meteorology for specific regions indicate considerable disparities. For example, the eastern coastline is reported to experience lighter showers yet could still witness high temperatures range between 35-37 degrees Celsius today.
Particularly concerning is Southern Thailand where the eastern coast is under severe weather alerts; forecasts indicate 40% likelihood of thunderstorms with intense downpours predicted, especially affecting the provinces of Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, and Songkhla. For these areas, night temperatures will range from 25-26 degrees Celsius, and daytime should see highs between 32-35 degrees Celsius.
Warnings for wind gusts of 15-30 km/h suggest caution for those traveling near storm-affected areas, emphasizing the importance of awareness of local weather. The Meteorology Department cautioned residents, especially sailors and coastal fishermen, against venturing out to sea during stormy weather, particularly as wave heights may reach 2 meters in thunderstorms.
The northern region's forecast indicates another day of heat, likely including sporadic thunderstorms later; temperatures tonight will stick to around 21-25 degrees Celsius and peak from 35-39 degrees Celsius. The west coast of the South, focused around locations such as Ranong, Phang Nga, Phuket, Krabi, Trang, and Satun, is also grappling with severe weather warnings. A 30% likelihood of thunderstorms is set to impact this area, with wind speeds ranging from 15-35 km/h and waves estimated at 1-2 meters high. Residents are urged to take preemptive actions to protect their health and property.
This weather phenomenon is not just about immediate rain and wind. It also impacts air quality and health. A typical concern during weather events like this is the accumulation of dust and haze residues. The prevailing conditions are expected to lead to moderate to heavy accumulation of dust particles across upper Thailand due to weak wind currents.
Persistent warm weather coupled with sudden thunderstorms demands residents' readiness against potential lightning strikes and localized floods, including caution near large bodies of water or areas prone to flash flooding. Lightning strikes can carry substantial risks, especially when storms linger.
Overall, as the Meteorology Department emphasizes staying informed, citizens are encouraged to monitor updates regularly to adapt to continually changing weather conditions. Local authorities are advised to prepare and implement safety protocols aimed at minimizing risk to life and property during this unstable weather period.