TOKYO (AP) — A strong earthquake struck Saturday off northern Japan, shaking buildings even in Tokyo and triggering a tsunami advisory for a part of the northern coast. Tokyo Electric Power Co. said there were no irregularities at the Fukushima Dai-ichi nuclear plant, which experienced meltdowns following a massive quake and tsunami 10 years ago. The Great Kanto Earthquake, also sometimes called the Great Tokyo Earthquake, rocked Japan on Sept. 1, 1923. A strong earthquake struck Saturday off northern Japan, shaking buildings in Tokyo 250 miles away and triggering a tsunami advisory for a part of the northern coast. Tokyo Earthquake Damage Risk Ratings Posted on September 8, 2010 The Bureau of Urban Development in the Tokyo Metropolitan Government conducts an earthquake assessment every 5 years, with the latest carried out in 2008. Tokyo has had: (M1.5 or greater) 0 earthquakes in the past 24 hours 1 earthquake in the past 7 days; 4 earthquakes in the past 30 days; 71 earthquakes in the past 365 days Although both were devastated, the city of Yokohama was hit even worse than Tokyo. The U.S. Geological Survey put the strength of the quake at magnitude 7.0 and depth at 54 kilometers (33.5 miles). A powerful magnitude 7.3 earthquake struck northeast Japan late Saturday night, injuring more than 100 people and causing widespread blackouts, cuts to water supplies and other damage. University of Tokyo Earthquake Research Institute Professor Kenji Satake claimed the Saturday earthquake was an aftershock of the earthquake in 2011. TOKYO (AP) — A strong earthquake hit off the coast of northeastern Japan late Saturday, shaking Fukushima, Miyagi and other areas, but there was no threat of a tsunami, officials said. A 7.0 preliminary magnitude earthquake has struck Japan off the coast of Ishinomaki, a city located just 65 miles (104 km) from Fukushima, the … Tokyo earthquake might've caused additional damage to the Fukushima nuclear plant There was a drop in water levels in the Unit 1 and 3 reactors indicating that the existing damage to their primary containment chambers was worsened. No major damage was reported, but several people had minor injuries. A strong earthquake struck Saturday off northern Japan, shaking buildings even in Tokyo and triggering a tsunami advisory for a part of the northern coast. Japan began assessing damage and restoring power after a magnitude-7.3 earthquake struck off Fukushima late Saturday, leaving about 150 people injured and … The earthquake hit at 11:08 p.m. local time (1408 GMT) and shook houses and offices in Tokyo, and was followed by aftershocks, including a 4.7 magnitude jolt, JMA said.