“Based on all available data a destructive Pacific-wide tsunami is not expected”, the Pacific Tsunami Warning Center said.
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A massive natural disaster off Sumatra island in 2004 triggered tsunami that killed 230,000 people in a dozen countries.
According to USGS, the quake occurred 109 kilometres (67 miles) west of the Sola village, which is the capital of Vanuatu Torba Province. The area has been struck by two similarly sized quakes – on Sunday and on Wednesday.
The tremor wasn’t felt in the capital.
The USGS initially estimated the quake’s magnitude at 6.9 before revising it down to 6.7.
Vanuatu is part of the “Ring of Fire”, a zone of tectonic activity around the Pacific that is subject to frequent earthquakes and volcanic eruptions.
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One of the 80 or so islands clustered in the south Pacific, Vanuatu was hit by another quake on Wednesday morning.
