The quake’s epicenter is at 19.608°N and 98.339°E, in Thum Lod subdistrict, at a depth of 3 kilometers, the division said.
Earlier on Tuesday, the division also reported milder 2.1- and 1.5-magnitude quakes in Muang and Pai districts of Mae Hong Son province, at 3:59 a.m. and 2:35 a.m., respectively.
There have been no reports of damaged buildings so far, but the division will continue to monitor the situation closely, it said.
It urged residents in Mae Hong Son to stay updated on the latest information and alert the relevant agencies of any tremors or damage they experience.
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The division also added that a 4.4-magnitude aftershock was reported earlier on Tuesday in Myanmar.