The Japan Meteorological Agency said Saturday’s earthquake, which had a magnitude of 7.1, was centered off the coast at a depth of 60 km (30 miles), adding that there was no danger of a tsunami. There were no immediate reports of damage or injuries. The US Geological Survey put the initial strength at 7.0, and the Tokyo Electric Power Company said more than 830,000 homes lost electricity in the Kanto region around Tokyo. She said that work crews did not discover radioactive leaks or other abnormalities at the destroyed Fukushima Daiichi Nuclear Plant. Japan Broadcasting Corporation NHK said there had been no reports of irregularities at the Tokai nuclear plant north of Tokyo, and earthquakes are common in Japan, which is located near the Ring of Fire, an area around the edge of the Pacific Ocean where the Earth’s tectonic plates meet. But Tokyo residents said this was the strongest earthquake they had in years, perhaps even since the 2011 earthquake.