The National Tsunami Warning Center has issued a tsunami warning for coastal zones of southern Alaska following an earthquake that rocked buildings in downtown Anchorage.

The center said Friday that the warning was in effect for parts of the state's Cook Inlet and the southern Kenai peninsula.

The warning means tsunami waves are expected.

The US Geological Survey initially said it was a 6.7 magnitude earthquake and then reduced that to 6.6.

The quake was centered about 7 miles (12 kilometers) north of Alaska's largest city.

AP

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