1,000-plus aftershocks shake Alaska after powerful 7.0 earthquake

ANCHORAGE, Alaska — Alaska has been struck by more than 1,000 aftershocks following Friday's 7.0 magnitude earthquake, the U.S. Geological Survey told CNN.

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Most of the aftershocks measured 2.5 or less, but the USGS said some 350 of the small quakes were higher and more than 10 were stronger than a 4.5 magnitude.

The temblor on Friday shook downtown Anchorage, Alaska’s largest city, damaging buildings and roads, and was centered about 8 miles north of the city.

An initial tsunami warning after the quake was canceled, and there were no serious injuries or deaths, but people were still frightened and described tense moments after the powerful quake.