7.6 earthquake hits off Tonga, no tsunami warning

An earthquake of magnitude 7.6 struck off Tonga, the United States Geological Survey said.

The quake struck at 4am NZT, with its epicentre at a distance of 95km west-north-west of Hihifo, Tonga, the USGS said.

It was at a depth of 210km.

A magnitude 7.6 struck 95km from Hihifo, Tonga on Thursday, at a depth of 210km. Photo / USGS

The US Tsunami Warning System said there was no tsunami warning after the earthquake.

The quake was followed by a 5.1 magnitude aftershock at 4.30am NZT.

Hihifo is the main village on the island of Niuatoputapu north of the Tonga main island group.

The quake was felt in American Samoa. A journalist in Tuālāuta County said the shaking lasted at least a minute or two.