The powerful quakes were said to be between 6.5 and 6.8 magnitude.
Six minutes later, a third 6.5-magnitude tremor was registered 138 miles southwest of Port Hardy - before a weaker 4.9 quake was recorded in the same place 14 minutes after that. They say there are a few reports of light shaking but no damage or tsunami is expected.
At 11:16 p.m., a magnitude 6.8 quake struck the same area at a depth of 13 miles (21 kilometers).
A series of three aftershocks measured between magnitude-4.3 and magnitude-4.9 followed the initial three earthquakes as well.
CBC meteorologist and seismologist Johanna Wagstaffe said the earthquakes are a reminder that B.C.is in a "complicated" tectonic setting.
The horseshoe-shaped Ring of Fire, which is 25,000 miles-long, is known for its chain of volcanoes.
Professor Bill McGuire, Emeritus Professor of Earth Sciences at University College London explained to Express.co.uk why the Ring of Fire is so unsafe.
Is there a tsunami alert on Canada coast after three 6 magnitude tremors hit? The quake caused a tsunami that hit the east coast of Japan.
More than 1000 earthquakes take place around the world every year - a lot of them in area sitting on the Ring.
"Looks like we have an natural disaster triplet, folks!"
"So far we are at roughly 1100 for 2018".