Another earthquake has struck off the coast of Vancouver island, this time at magnitude 5.7.
The US Geological Survey says the quake hit just after 7 p.m. about 175 km west of Port Hardy, and about 10 km deep.
The U.S. National Weather Service Tsunami Alert Centre says no Tsunami activity is expected, and there have been no reports of damage.
It follows a five smaller nearby quakes today over magnitude 4, including a 5.1 magnitude event this morning.
That quake hit just before 8 a.m. this morning and was centred about 150 km west of Port Hardy, and about 10 km below the earth’s crust according to Natural Resources Canada.
The earthquakes struck in the the Cascadia subduction zone, where the Explorer microplate and North American plate of the earth’s crust meet.
Pressure in that area is responsible for about 300 small quakes a year, but the long-term buildup and release of tension periodically releases, the process expected to create the so-called “big one.”
The last major subduction quake of this type on B.C. was in 1700.