Earth Changes
The quake was centered 15 miles from Port Olry and hit at a depth of 17 miles at 11:32 p.m. local time, the U.S. Geological Survey said. Vanuato is about 606 nautical miles east of the Solomon Islands and 933 nautical miles from Australia.
Vanuatu has a population of 280,000 and sits on the Pacific Ring of Fire, the arc of seismic faults around the Pacific Ocean where earthquakes and volcanoes frequently occur.
The Pacific Tsunami Warning Center issued a tsunami warning for coasts within186 miles of the epicenter but it wast later withdrwan.
No initial reports of damage or casualties were reported.
In November, the Solomon Islanda was hit with a 7.0 earthquake.

A motorist navigates his way through a crack on a road in Joshimath, India, Tuesday, Jan. 3, 2023. Authorities have stopped all construction activity and started shifting hundreds of people panicking after seeing a temple collapse and cracks in over 600 houses due to subsidence of land in a northern Indian hilly town, officials said on Saturday.
Residents of Joshimath town in Uttarakhand state say they started noticing cracks in houses, especially after 2021 floods in the region. No injury was reported in the temple collapse late Friday and those living nearby had vacated the area a day earlier.
Himanshu Khurana, a district administrator, said more than 60 families have been moved to government relief camps. The number is likely to go up to 600 families, media reports said.
Television images also showed cracks in roads, hampering the movement of vehicles.

One snowmobiler died and another was missing Saturday after becoming buried in an avalanche in unincorporated Grand County, Colorado, officials said.
The pair were riding snowmobiles when a wave of snow hit them on the east face of Mount Epworth in Grand County, about 6 miles east of Winter Park, according to the Colorado Avalanche Information Center.
The avalanche was reported about 2:15 p.m., and responding sheriff's deputies, search-and-rescue crews, ski patrol members, and local good Samaritans found the 58-year-old from northern Colorado buried in snow, the Grand County Sheriff's Office said.
They couldn't revive him, and he was pronounced dead at the scene, the office said in a statement. The man's identity was expected to be released later by the county coroner, it said.
Meteorologists estimate that 25 litres of water per square metre fell in this small time period, transforming parts of the city into a raging river.
Considering northern areas have up till now avoided the kind of flooding horrors experienced in urban areas of Lisbon just before Christmas, Saturday's deluge has seriously worried city authorities.
Deputy mayor Filipe Araújo admitted that "for the first time" water rose 'up' to the surface and did not drain into the underground river.
"We have a river that passes below that normally transports (rain) water. If we don't detect ways of correcting (the problem), it could happen again..." he said.

A dead humpback whale washed ashore Saturday morning on Mississippi Avenue in Atlantic City.
This marks the second time in two weeks a (presumed) humpback whale has washed ashore in the World's Play Ground.
Another, 30-feet in length, was found on the Chelsea Avenue beach on December 23rd, according to the Marine Mammal Stranding Center.
Following that incident, NOAA Fisheries' Greater Atlantic regional office surmised rough surf and recent storms off the coast were to blame, according to NJ.com.
Another atmospheric river will bring heavy rain and mountain snow to California and neighboring states into early next week.
California has faced a frenzy of storms that have unleashed deadly impacts since the end of 2022, and AccuWeather meteorologists say the onslaught is far from over. One storm in the bunch is poised to aim a firehose of moisture at the Golden State early in the new week, potentially leading to "catastrophic" flooding, in addition to widespread mudslides and road closures, forecasters say.
"The impacts from this storm cannot be understated," AccuWeather Meteorologist Joe Bauer said.
Comment: A summary and good storm preparation advice from a local station:

In some areas the snow banks in the middle of the road are five feet high. Normally, these banks are not much higher than one-foot.
About two feet of snow fell in Rawlins between Sunday night and Wednesday morning, and the snow drifts were several feet deep. Even people with four-wheel drive were getting stuck in roadways.
Michael O'Brien, the utilities supervisor for the City of Rawlins, and his crew helped remove much of the snow. He said typically the area gets only a couple inches of snow in a storm.
"With this amount of snow though, it was very difficult," he said. "I mean, we had everybody from all different departments, different vehicles, every department had a vehicle out there, backhoe skid steer somewhat, trying to remove snow in places."
It has been snowing heavily in some of the Norwegian ski resorts over the past few days.
Those out in the snow at the moment have some of the best conditions in Europe.
Here's Norefjell.
An actress from "Raised By Wolves" had to be hospitalized after getting mauled by an angry seal in South Africa — in a scene she compared to something out of the movie "Jaws."
The clip is currently making waves online amid a spike in pinniped attacks.
The bizarre encounter occurred Wednesday while the South African-born actress, who was raised in Los Angeles, was swimming in the ocean off Clifton Beach in Cape Town, Jam Press reported.
"Be careful swimming at Clifton! I was attacked by a seal in the water," victim Loulou Taylor, who plays Cassia in the HBO Max series, wrote in an Instagram story describing her real-life horror movie scene, the Citizen reported.
Comment: Reports of the other beached whales: