A powerful magnitude 7.4 earthquake hit off northeastern Japan late Wednesday, leaving at least two people dead and more than 160 injured and causing a high-speed shinkansen train to derail. A Tohoku Shinkansen bullet train derailed between Fukushima Station and Shiroishizao Station, but all the 78 passengers and crew members on board were unharmed, according to East Japan Railway Co. The quake also prompted the Japan Meteorological Agency to issue a 1-meter tsunami warning for the Pacific coast of Miyagi and Fukushima prefectures, but the warning was lifted Thursday morning after only relatively small tsunami waves were observed.