<span class="oyrPY qlwaB AGxeB">WELLINGTON, New Zealand -- </span>A magnitude 7.3 earthquake struck Tuesday just off the coast of Vanuatu in the South Pacific Ocean, the USGS said. 

The quake occurred at a depth of 57 kilometers (35 miles) and was centered near Port Vila, the largest city in the island nation. 

It was not immediately clear whether it caused any damage. 

The jolt was followed by a magnitude 5.5 aftershock at the same location. 

Vanuatu government websites were offline in the aftermath of the quake. 

The USGS warned of tsunami waves for some coasts on Vanuatu, a group of 80 islands that is home to about 330,000 people. 

The USGS says a magnitude 7.3 earthquake has struck just off the coast of Vanuatu in the South Pacific Ocean{ai:summary}<p>A magnitude 7.3 earthquake struck near Vanuatu, with a depth of 57 kilometers. Centered near Port Vila, the quake was followed by a 5.5 aftershock. Government websites were offline, and tsunami warnings were issued for some coasts. The impact on damage remains unclear. #other</p>

Magnitude 7.3 earthquake hits the Pacific island nation of Vanuatu

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