(REUTERS) - A magnitude 6.0 quake struck off Canada's Vancouver Island on Tuesday, the United States Geological Survey (USGS) said, but there were no reports of damage and no tsunami warnings were issued following the event.

The USGS said the quake, initially measured as a magnitude 6.2, was very shallow, only 965m below the seabed. It was centred 211km west of Port Hardy in British Columbia.

The quake struck in an earthquake-prone zone running from northern Vancouver Island to the Haida Gwaii island chain to the north. The area was the site of Canada's largest ever earthquake in 1949, which measured 8.1.

The temblor was centred far from any major cities or towns.

A spokesman for Emergency Management British Columbia said there were no reports of damage.