ANCHORAGE, Alaska (Reuters) - A moderate 5.7-magnitude earthquake shook Anchorage, Alaska’s largest city, on Saturday morning.

The U.S. Geological Survey said the quake’s epicenter was 161 miles southwest of Anchorage. There was no tsunami warning in effect, according to the West Coast and Alaska Tsunami Warning Center website.

Magnitude 5 quakes can cause considerable damage, but there were no immediate reports of injury or damage.