WHITEHORSE -- More than 100 aftershocks had shivered across the Alaska Panhandle, southern Yukon and parts of northwestern British Columbia by early Tuesday following two powerful earthquakes a day earlier, but seismologists say while people need to be prepared, it isn't time to be alarmed. (Photo: U.S. Geological Survey)

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. That was followed by several smaller quakes, including one with a magnitude of 5.2 shake and another major 6.3 quake about almost two hours after the first. "What I can tell you is that there has been no reports of damage or injury in Whitehorse," said an official with the Yukon Emergency Measures Organization. Yukon Community Services Minister John Streiker said on Twitter that Yukon Energy was working with ATCO to restore power outages and to check dams and substations for damage.
A series of earthquakes, the largest registering 6.3, strike near Mosquito Lake, Alaska, near the Alaskan border with British Columbia, Canada. At least one office building and two schools were heavily damaged and evacuated in the Yukon.