Powerful 6.8 earthquake strikes off Japan's Honshu island

© earthquake.usgs.gov

    

A powerful 6.8 earthquake has struck off the eastern coast of Japan's Honshu island, USGS and Japan Meteorological Agency report. Shaking has been felt in Tokyo.

The quake struck at 6:13am local time at a depth of almost 50 kilometers. While USGS originally reported the quake at 6.9 magnitude, JMA measured it at 6.6. No casualties or damage have yet been reported.

No tsunami warning was issued by JMA and according to the Pacific Tsunami Warning Center, based on all available data a "destructive pacific-wide tsunami" is not expected. No warning has been issued for the US state of Hawaii.

No abnormalities were reported at the Fukushima nuclear power plant, which was crippled by an earthquake and tsunami in 2011. However, some trains were reportedly delayed on the Tohoku Line between Fukushima and Sendai prefectures following tremors. Onagawa and Higashidori nuclear power plants also reported no abnormalities.

平成27年05月13日06時19分 気象庁発表 13日06時13分頃地震がありました。 震源地は宮城県沖（北緯38.9度、東経142.1度）で、 震源の深さは約50km、地震の規模（マグニチュード）は6.6と推定されます。 http://pic.twitter.com/w9JSjnHZ66

— 地震速報 (@EqAlarm) May 12, 2015