VANCOUVER, British Columbia — A magnitude 7.7 earthquake struck off the west coast of Canada, but there were no reports of major damage. Residents in parts of British Columbia were evacuated, but the province appeared to escape the biggest quake in Canada since 1949 largely unscathed.

The U.S. Geological Survey said the powerful temblor hit the Queen Charlotte Islands just after 8 p.m. local time Saturday at a depth of about 3 miles and was centered 96 miles south of Masset, British Columbia. It was felt across a wide area in British Columbia, both on its Pacific islands and on the mainland.

“It looks like the damage and the risk are at a very low level,” said Shirley Bond, British Columbia’s minister responsible for emergency management said. “We’re certainly grateful.”

The National Weather Service issued a tsunami warning for coastal areas of British Columbia, southern Alaska and Hawaii, but later canceled it for the first two and downgraded it to an advisory for Hawaii.

Gerard Fryer, a senior geologist with the Pacific Tsunami Warning Center, said the first waves hitting shore in Hawaii are smaller than expected.

The weather service also canceled a tsunami advisory for Oregon, leaving northern California as the only spot in North America still under a tsunami advisory.

Canada’s largest earthquake since 1700 was an 8.1 magnitude quake on Aug. 22, 1949, off the coast of British Columbia, according to the Canadian government’s Natural Resources website. It occurred on the Queen Charlotte Fault in what the department called Canada’s equivalent of the San Andreas Fault — the boundary between the Pacific and North American plates that runs underwater along the west coast of the Haida Gwaii.

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