A magnitude 7.0 earthquake struck off the coast of southeastern Japan Sunday, the U.S. Geological Survey reported. In Tokyo, about 300 miles north, buildings swayed but no damage was reported. Despite the considerable magnitude of the quake, there was no danger of a tsunami. No immediate reports of injury were reported. John V. Roos, the U.S. ambassador to Japan, tweeted "about to greet Emperor and Empress for New Year when Imperial Palace began to shake." A catastrophic earthquake and tsunami hit the island’s northern coast in March, claiming the lives of at least 20,000.