A powerful earthquake shook southern Alaska on Friday morning, buckling roads, disrupting traffic and knocking television stations off the air in the state’s largest city, but there were no immediate reports of injuries. The 7.0 magnitude earthquake’s epicenter was 8.1 miles (13 km) north of Anchorage, home to about 40 percent of the state’s population. The temblor had a depth of 26.7 miles (43 km), the U.S. Geological Survey said.
