WorldTsunami warning issued after magnitude 6.8 quake strikes JapanManzar TurkMarch 14, 2012March 15, 2012 by Manzar TurkMarch 14, 2012March 15, 2012 Toklyo: A Tsunami warning has been issued as a massive 6.8-magnitude quake hit Hokkaido island of japan on Wednesday, Japan Meteorological Agency said....