ANCHORAGE, Alaska (CBS NEWS) - Back-to-back earthquakes measuring 7.0 and 5.8 rocked buildings and buckled roads Friday morning in Anchorage, prompting people to run from their offices or take cover under desks and triggering a warning to residents in Kodiak to flee to higher ground for fear of a tsunami. The U.S. Geological Survey said the first and more powerful quake was centered about 7 miles north of Anchorage, Alaska's largest city. Officials eventually canceled a tsunami warning for coastal areas of southern Alaska after the earthquake. Police in Alaska's Kodiak island community had told residents to head to higher ground after the tsunami alert was issued.
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