TOKYO - A strong earthquake with a preliminary magnitude of 6.8 struck off Japan's northeastern coast Friday, triggering a tsunami advisory that was later lifted.
Japan's Meteorological Agency said the quake hit at 2:36 p.m. (0536 GMT) and was centred slightly south of where a massive magnitude-9.0 temblor struck in March.
The agency issued a tsunami advisory, predicting waves of 50 centimetres along the coast of Miyagi and Fukushima prefectures, where a nuclear plant crippled in the March 11 quake is located. But about a half-hour later, the advisory was lifted.
There were no abnormalities in key equipment at the Fukushima Dai-ichi nuclear power plant, said Chie Hosoda, an official with the Tokyo Electric Power Co., the plant's operator. She said some of the plant's workers assigned to the coastal side of the facility temporarily retreated inside the building.
Announcers on television urged residents in coastal areas to head for higher ground, but about a half-hour after the quake, there were no reports of a tsunami reaching Japan.
In Onagawa, about 340 kilometres north of Tokyo, town official Hironori Suzuki said there were no immediate reports of damage or injuries. There was no visible swelling of the ocean.
