File-In this March 11, 2011, file photo, car headlights from a steady stream of cars form a line as residents evacuate the coastal town of Seaside, Ore., after tsunami warnings were issued as a result of an earthquake in Japan. When North America’s undersea edge and a tectonic plate pushing beneath it inevitably give way to three centuries of accumulated stress, unleashing a monster earthquake and tsunami in the Pacific Northwest, the expected catastrophic loss of life and economic disruptions could be lessened by an early warning system.(AP Photo/Don Ryan, file)