A powerful quake with a preliminary magnitude of 6.9 shook eastern and northeastern Japan on Saturday evening, and the government initially warned tsunami of up to 1 meter could hit parts of Miyagi Prefecture's coastal areas.The temblor occurred at 6:09 p.m. about 59 kilometers below the surface off the coast of Miyagi, the Japan Meteorological Agency said. The agency called off the tsunami warning at 7:30 p.m.The strength and the depth of the temblor were revised downward from the initially reported magnitude 7.2 and 60 km, respectively.An agency official said at a press conference no sign…READ FULL ARTICLE