07 December,2012 02:25 PM IST | | Agencies
Media reports said a one-metre-high wave could sweep ashore in Miyagi prefecture, an area badly hit by the March 2011 tsunami that devastated a large swathe of coast in the northeast, killing thousands.u00a0
Broadcaster NHK, quoting the national meteorological agency, said the tsunami is expected to hit at 5:40 pm (0840 GMT).
The United States Geological Survey measured the quake's magnitude at 7.3.
NHK said the Japan Meteorological Agency had issued a tsunami warning, one notch lower than a tsunami alert, for the Pacific coast of Iwate, Fukushima, Aomori and Ibaraki prefectures.
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A 50-centimetre tunami was expected to hit the coast of Iwate at 5:40 pm, Fukushima at 5:50 pm, and Aomori and Ibaraki at 6:00 pm.
Nuclear plant operator Tokyo Electric Power told AFP there were no reports of further damage at the crippled Fukushima nuclear plant.
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