A 4.6 magnitude earthquake struck off the south tip of Koh Yao Yai, Phangnga province early Wednesday, but no casualties or damage was reported.
The temblor could be felt in the island's surrounding provinces of Phangnga, Phuket and Krabi, according to the Meteorological Department's Seismological Bureau.
The quake occurred at 4.18am with epicentre at four kilometres underground. It occured about 18 kilometres southeast of Phuket’s Muang district.
The bureau posted on its website that there was no danger of a tsunami.
Traffic radio station Jor Sor 100 reported that Phuket's Disaster Prevention and Mitigation Office reported a strong shaking that lasted about five seconds, "with a loud noise like 10-wheel lorry". Many listeners called the radio station to ask about the situation.
Prior to this quake, there were minor quakes of 1.5 magnitude in Chiang Rai’s Muang district at 4.28pm Tuesday and a 2.6 magnitude quake in Tak’s Tha Song Yang district at 10pm Monday.