New Caledonia lifted its tsunami warning to citizens after a 7.7-magnitude earthquake struck on Friday in the Pacific Ocean southeast of the territory.
The quake was detected some 340 kilometres east of Vao city in New Caledonia, a French Pacific territory, according to the US Geological Survey (USGS).
In New Caledonia, the police had evacuated the coast and tsunami sirens had been activated.
Tsunami waves of one-to-three metres (six-to-nine feet) above tide are possible along some coastal areas of Vanuatu, according to the Honolulu-based Pacific Tsunami Warning Center.
In Vanuatu, waves of just under half a metre above tide level were reported at Lenakel, while slightly smaller waves were observed or predicted for several other islands, the Honolulu-based Pacific Tsunami Warning Center said.