BANGKOK, THAILAND – Thailand’s meteorological service warned of “summer storms” in northern regions, with thunderstorms, strong gusts and local hail expected to affect the country from 16 to 20 April 2026.
First warning issued by meteorological service
On 13 April 2026, the Thai Meteorological Department (TMD) issued an initial warning about summer storms in the upper parts of the country. The advisory covered the period from 16 to 20 April.
For these dates, the agency forecast thunderstorms with strong wind gusts, as well as local hail and isolated lightning strikes. The warning applied specifically to upper regions of Thailand.
Regions expected to be hit first
According to the TMD, the severe weather was expected to start in northeastern Thailand. This area was identified as the first region to be affected by the storms.
Subsequently, the eastern region, the eastern part of the central region and the lower North were also forecast to come under the influence of the system. These areas were expected to see similar conditions with thunderstorms and strong winds.
Cold air from China meets intense heat
As the cause, the agency cited a high-pressure area or cooler air mass from China spreading over the South China Sea. This weather pattern was identified as the main trigger for the expected storms.
As a result, south and southeast winds were forecast to strengthen over parts of the Northeast and the East. At the same time, it was expected to remain hot to very hot in northern Thailand, increasing instability.
Risks from thunderstorms, gusts and hail
Summer storms in Thailand were described as capable of developing very strong thunderstorm cells with powerful gusts in a short time. Such conditions can cause damage to structures and vegetation.
The TMD also pointed to the possibility of hail in some areas and lightning strikes in certain regions. These phenomena were highlighted as additional hazards during the forecast period.
Advice for residents and travellers
People in the affected areas were urged to avoid open spaces during storms and not to stay under large trees. This was intended to reduce the risk from lightning and falling branches.
The agency explicitly advised staying away from unstable structures and inadequately fastened advertising signs. Such constructions could be particularly vulnerable to strong winds.
Guidance for farmers and health precautions
Farmers were asked to stabilise fruit trees and take precautions to limit damage to crops and livestock. These measures were aimed at reducing potential economic losses.
In addition, the authority recommended paying special attention to personal health during the phase of changing weather conditions. Rapid shifts between heat and storms could be stressful for vulnerable groups.
How to stay updated: website and hotlines
The TMD advised the public to follow further official announcements closely. The situation assessment could be refined as new data became available.
Information was provided via the website http://www.tmd.go.th and around the clock by telephone at 0-2399-4012-13 and 1182. These channels were highlighted as the main sources for updated weather warnings.
Next warning scheduled
Another warning was scheduled for publication on 14 April 2026 at 11:00. The agency announced that this update would reflect the latest development of the weather situation.
Until then, the assessment could still be adjusted depending on how the conditions evolved. The TMD indicated that forecasts might become more precise closer to the event.
“Sommerstürme in Thailand können in kurzer Zeit sehr kräftige Gewitterzellen mit starken Böen entwickeln.”
said TMD, Thailand’s Meteorological Department.
“Die Bevölkerung in den betroffenen Gebieten soll offene Flächen meiden und sich nicht unter großen Bäumen aufhalten.”
said TMD, Thailand’s Meteorological Department.