Tsunami warning issued after earthquake rocks southern Alaska

ANCHORAGE, Alaska (AP) — A 6.6 magnitude earthquake rocked buildings Friday morning in Anchorage and caused lamp posts and trees to sway, prompting people to run out of offices and seek shelter under office desks.The U.S. Geological Survey says the earthquake was centered about 7 miles (12 kilometers) north of Alaska's largest city.An Associated Press reporter working in downtown Anchorage saw cracks in a 2-story building after the quake. It was unclear whether there were injuries.People w