From NDTV:
Tokyo: A major 7.0-magnitude earthquake rocked Tokyo Sunday, Japan’s Meteorological Agency said, but there were no immediate reports of damage or injury and no tsunami warning was issued.
The quake struck at 2:28pm (0528 GMT), the agency said. Its epicentre was located near Torishima, an island about 560 (350 miles) south of Tokyo. It was about 370 kilometres (230 miles) deep.
The mid-afternoon quake swayed buildings in Tokyo but it did not disrupt the final of the Emperor’s Cup football tournament under way at the National Stadium.
Read more at: http://www.ndtv.com/article/world/powerful-7-0-magnitude-quake-rocks-tokyo-162516&cp
That is a powerful quake if Tokyo was shaking 350 miles from the epicenter. Being 230 miles deep it would not have disrupted the seabed causing a tsunami, thank goodness.