Pacific Ocean: Magnitude-5.4 earthquake occurs northeast of Neiafu, Tonga at around 23:02 July 16

Event

A magnitude-5.4 earthquake occurred in the Pacific Ocean northeast of Vava'u Island, Tonga at 23:02 July 16. The epicenter was about 139 km (86 miles) northeast of Neiafu, Tonga. The tremor occurred at a depth of about 10 km (6 miles), and light shaking was probably felt throughout Vava'u Island. There have been no initial reports of damage or casualties as a result of the earthquake; however, significant damage is unlikely in Neiafu. It could take several hours until authorities can conduct comprehensive damage assessments, especially in remote areas. Light aftershocks are likely over the coming days.

Officials may temporarily shut down transportation infrastructure in the tremor zone to check for damage. Minor disruptions could occur during shutdowns, but service will likely resume quickly if no damage is found. Utility outages are possible, particularly near the earthquake's epicenter.

The event has not prompted any tsunami advisories.

Advice

Plan accordingly for aftershocks. Consider vacating multistory buildings if operating in affected areas until authorities confirm their structural integrity. Allow additional time for air and road travel, as aftershocks may prompt brief disruptions. Seek updated information on road conditions before driving in hilly areas in the affected region due to potential landslides.