ANCHORAGE, Alaska (AP) — The U.S. Geological Survey says a magnitude-6.3 aftershock has shaken the corner of British Columbia, near the boundary with Alaska, nearly two hours after a magnitude-6.2 earthquake hit the same area.
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Geophysicist Amy Vaughan says it’s not completely uncommon for an aftershock to be larger than the triggering quake, though normally the following quakes are smaller. She says there’s been a series of aftershocks ranging from magnitudes 2 to 5.
The initial large quake hit around 4:30 a.m. Monday about 30 miles northwest of the tiny Alaska town of Mosquito Lake and about 83 miles southwest of Whitehorse, Canada. The large aftershock struck within a few miles. The geological …