A SHALLOW 6.0-magnitude earthquake has hit off the coast of Vanuatu, the US Geological Survey says, but there has been no tsunami warning issued.
The quake struck at a depth of just one kilometre, about 60 kilometres southwest of the capital Port Vila today.
"It was very shallow and produced a lot of surface water activity, but no tsunami," said a GeoScience Australia seismologist, adding that it would have been felt in Port Vila but damage was unlikely unless structures were weak.
It follows a series of recent quakes near Vanuatu including two of 7.0 magnitude or higher in the past month.
"Over 40 quakes this year have been recorded in the area southwest of Port Vila and this would be an aftershock from those," said the seismologist.
