A 7.7-magnitude earthquake struck in the South Pacific on Thursday, generating a tsunami that threatened island nations in the region.

The quake struck at just after midnight on Thursday local time (1320 GMT Wednesday) about 415 kilometres (258 miles) east of Vao in New Caledonia at a depth of 10 kilometres, according to the US Geological Survey.

The US government's NWS Pacific Tsunami Warning Center said "hazardous tsunami waves" were forecast for some coasts.

It said waves reaching between 0.3 and one metre above the tide level were possible for Fiji, New Zealand and Vanuatu.

A wave of 0.3 metres struck Fiji, according to the Twitter feed of the island nation's seismology department.

It provided no further details.

The Australian Bureau of Meteorology also confirmed in a tweet that a tsunami had been generated.

The bureau warned of a threat to Lord Howe Island, which is about 550 kilometres (340 miles) east of Australia's mainland.

The New Zealand National Emergency Management Agency released a statement telling people in coastal areas to move away from waterfronts.

"We expect New Zealand coastal areas to experience strong and unusual currents and unpredictable surges at the shore following a magnitude 7.7 earthquake," the disaster agency said.

"People in or near the sea in the following areas should move out of the water, off beaches and shore areas and away from harbours, rivers and estuaries."

The affected areas included the far north of New Zealand's north island, the Great Barrier Island east of Auckland and a stretch of coast along the country's east.

There were no initial reports of casualties or damage from the tsunami or the quake, which was initially recorded by USGS at magnitude 7.5 before being revised to 7.7.

The Pacific "Ring of Fire", where tectonic plates collide, experiences frequent seismic and volcanic activity.

In 2018, a 7.5-magnitude quake and subsequent tsunami on Indonesia's Sulawesi island left more than 4,300 people dead or missing.

A 9.1-magnitude quake struck off the coast of Indonesia's Sumatra island in 2004, triggering a tsunami that killed 220,000 throughout the region.

The death toll included around 170,000 in Indonesia — one of the deadliest natural disasters in recorded history.

6.2-magnitude quake strikes off Indonesia's Sumatra island
Jakarta (AFP) Feb 10, 2021 –

A 6.2-magnitude earthquake struck off the coast of Indonesia's Sumatra Island Wednesday, the US Geological Survey said, but there was no tsunami warning or immediate reports of damage.

The strong offshore quake hit about 217 kilometres south-southwest of the city of Bengkulu at a shallow depth of 10 kilometres at 7:52 pm local time (1252 GMT).

Shallow quakes tend to cause more damage than deep ones.

The Southeast Asian archipelago experiences frequent seismic and volcanic activity due to its position on the Pacific "Ring of Fire", where tectonic plates collide.

More than 100 people were killed when a 6.2-magnitude quake rocked the small city of Mamuju on Sulawesi island last month.

In 2018, a 7.5-magnitude quake and subsequent tsunami on Sulawesi island left more than 4,300 people dead or missing.

A devastating 9.1-magnitude quake struck off the coast of Sumatra in 2004, triggering a tsunami that killed 220,000 throughout the region, including around 170,000 in Indonesia — one of the deadliest natural disasters in recorded history.