A strong, shallow earthquake with a preliminary magnitude of 6.2 struck off British Columbia province on Canada's west coast on Monday - the second powerful quake in the region in as many days.
The quake, at a depth of about 10km, was centred about 245km southwest of Prince Rupert in the province and struck about 10.29 pm on Monday, the US Geological Survey said.
The tremor was not expected to generate a tsunami, the USGS's Alaska Tsunami Warning Center said.
A tsunami warning was issued for Hawaii after a magnitude 7.7 quake hit off the coast of British Columbia late on Saturday, Reuters reports.
That tsunami advisory was cancelled early on Sunday after smaller than anticipated waves reached the US island group in the Pacific without causing any major damage.
Thousands of people in Hawaii had fled to higher ground before the warning was cancelled.