Extremely strong and very deep M8.5 earthquake was registered by Japan Meteorological Agency (JMA) off the coast of Chichi-shima, Bonin Islands region (Ogasawara), Japan at 11:23 UTC on May 30, 2015. JMA is reporting depth of 590 km (366 miles).
Preliminary report by USGS said M8.5 at a depth of 696.0 km (432.5 miles), and was later revised to M7.8 at a depth of 677.6 km (421.0 miles).
According to the USGS, epicenter was located 166 km (103 miles) WNW of Chichi-shima, 770 km (478 miles) SSE of Shimoda, 782 km (486 miles) SSE of Oyama, 790 km (491 miles) S of Tateyama, and 870 km (541 miles) S of Tokyo, Japan.
There are no people living within 100 km radius.
Based on all available data, there is no tsunami threat because the earthquake is located too deep inside the Earth.
