According to the United States Geological Survey, there were three strong quakes to shake the area in quick succession.
The 6.8-magnitude quake came about 35 minutes later and was centered about 12 miles closer to Port Hardy at a depth of about 6 miles, the USGS said.
According to the USGS, the first quake was a 6.6-magnitude.
The quake had a depth of 46.6km and hit at 10:47am universal time (11.47am BST).
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It is believed that the first quake struck at a depth of 21 miles. "This is standard for earthquakes to happen in groups of three like this", he said.
"Many of the biggest faults in the Ring of Fire are submarine so that their rupture can trigger catastrophic tsunamis, such as those that struck Indonesia and the Indian Ocean in 2004 and Japan in 2011".
According to a forecast model of the 9.0 natural disaster produced by the Pacific Tsunami Warning Center, the tsunami generated from such a quake would impact all of the west coasts of Canada, the United States, Mexico, and would bring impacts to East Asia.
More than 1000 earthquakes take place around the world every year - a lot of them in area sitting on the Ring.