The Chiang Mai governor has been instructed to assess any fall-out from the quake although the Chiang Mai Provincial Disaster Prevention and Mitigation Office (PPDMO) says it has not yet received reports of damage and continues to closely monitor the situation.
At 08:37, the earthquake monitoring centre reported a 6.4 magnitude seismic event with the epicentre located near Kengtung in the Shan State of Myanmar at a depth of 9 kilometres,
approximately 100 kilometres northwest of Mae Sai District, Chiang Rai Province. It was followed by a series of aftershocks.
The tremors were felt in several provinces including Chiang Rai, Chiang Mai, Mae Hong Son, Lamphun, Phayao, Lampang, Nan, Udon Thani, Khon Kaen, and in Bangkok, particularly in high-rise buildings.
People in Chiang Mai city centre and the surrounding districts felt the earth move, with both flat and elevated areas experiencing the tremors, prompting concerns about potential aftershocks.
The Chiang Mai region remains vigilant for any further seismic activity.
A student in a fourth-floor classroom said the teacher abruptly halted the lesson and instructed everyone to leave the building when the earthquake occurred.
Some individuals initially thought they were experiencing dizziness without realizing an earthquake had taken place. Others, who were busy working, were unaware of the tremors and once the situation had calmed down, life in the city continued as usual for most residents.
Mae Fah Luang University in Chiang Rai Province and schools in Lampang Province issued evacuation orders, instructing people to gather outside the buildings for safety.
The seismic activity had no impact on electricity generation at the Mae Moh Power Plant in Lampang province and has not affected the Mae Chang and other dams operated by the Provincial Electricity Authority in the Mae Moh district
The 41 Thais waiting in Kengtung to be repatriated are also said to be safe.