Magnitude 6.8 Earthquake Jolts Japan off Fukushima, Triggers Tsunami Advisory

Quake jolts area where nuclear plant remains damaged.

A strong earthquake with a preliminary magnitude of 6.8 jolted northeastern Japan off Fukushima prefecture on Friday and a 50 cm tsunami advisory was issued for the coast of Miyagi and Fukushima prefectures, the Japan Meteorological Agency said.

The tsunami advisory was issued for the coastal areas that suffered severe damage from a massive quake and tsunami in March. However, despite its size, the quake was barely felt in Tokyo, and the tsunami advisory was lifted half an hour after its issuance.

Tokyo Electric Power Co. said no abnormalities had been found at radiation monitoring posts at the crippled Fukushima Daiichi nuclear power plant and that cooling operations at the damaged reactors were continuing.

-- THR's Gavin J. Blair in Tokyo contributed to this report.