4 earthquakes — measuring 6.8, 6.6, 6.5 and 4.9 magnitude — struck in fast succession off Canada’s west coast late Sunday, the US Geological Survey reported.
The epicenter of the primary 6.6 tremor, at 10:39 p.m., was positioned 135 miles southwest of Port Hardy — a small municipality on the northeastern tip of British Columbia’s Vancouver Island — and 355 miles northwest of Seattle.
The second stronger quake, measuring 6.Eight on the Richter scale, occurred 122 miles southwest of the Canadian city greater than half an hour later, at 11:16 p.m.
Six minutes later, a 3rd 6.5 magnitude tremor was registered 138 miles southwest of Port Hardy — earlier than a weaker 4.9 quake was recorded in the identical place 14 minutes after that.
There have been no preliminary studies of injury or accidents, and no tsunami warnings had been issued.
The area is positioned close to the Cascadia subduction zone, a mammoth fault line that lies offshore, stretching from northern Vancouver Island to Northern California in the US.