UPDATE: Phuket officials confirm no tsunami threat after Sumatra earthquake

Phuket authorities have confirmed there was no tsunami threat and no damage following a magnitude 5.1 earthquake off northern Sumatra, Indonesia, that was felt in parts of the island on Wednesday, 22 July 2026.

The earthquake struck Aceh Province at 11:18am local time at a depth of about 10 kilometres. Its epicentre was reported to be about 381 kilometres south-west of Satun province.

Office workers on the fourth floor of a building in Talad Yai, Phuket Town, reported noticeable vibrations and swaying light fixtures. In Patong, guests and staff on the eighth floor of a mid-rise hotel said they felt the building move for about two seconds.

Governor Chotnarin Kedsom said the Earthquake Monitoring Division had assessed the event and confirmed that it posed no tsunami threat to Thailand. He said Thailand’s National Disaster Warning Center would issue alerts immediately if an earthquake created a tsunami risk.

Warat Surawadee, head of the Phuket Provincial Disaster Prevention and Mitigation Office, said inspections found no structural damage. Authorities remained ready to assist residents if required.

Phuket has 19 tsunami warning towers, with coverage extending to areas including Koh Racha Noi. The governor said regular preparedness drills, including table-top exercises, are planned to support coordination between agencies.