Magnitude-6.3 aftershock shakes Canada, Alaska

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At a magnitude of 6.2, the temblor hit northwest of Mosquito Lake, a hamlet with a population of about 300.

She said she had spoken to police in the town of Haines about 30 miles south and they also had not gotten reports of injuries or damage from the first quake.

It shook British Columbia and southeast Alaska at 5:31 a.m. Many aftershocks, including one measuring a 4.5 magnitude, were felt in the hours afterwards.

A powerful quake has struck northern British Columbia, jolting the surrounding landscape and being felt in neighbouring Alaska and Yukon.

Vaughan said the area is highly seismic and a quake of this magnitude isn't unexpected.

The first quake measured 6.2 on the Richter scale and took place 127 kilometres outside of Whitehorse, near the border with British Columbia, according to Natural Resources Canada.

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The quake was followed by multiple aftershocks Monday morning, including a quake that the USGS says was even larger.

There have also been a number of aftershocks, with some with magnitudes as high as and 5.2. However, based on data so far, as well as the location of today's earthquakes, these were likely associated with the Denali Fault, where slip is approximately 2 mm/yr (Wesson et al., 1999).

Residents said on social media the quake was strong enough to wake them up, and knock items off shelves.

The National Weather Service office in Juneau said it had no reports of damage, but the meteorologist on duty did feel the shaking.

The geological survey website has recorded almost 200 reports of people feeling the shaking.