A 6.9-magnitude earthquake is striking off Japan's northern coast near Iwate, about 50 km deep, and it mildly shakes Tokyo while authorities report no tsunami risk and no immediate injuries.The epicenter is near Kuji and the shaker occurs during the morning rush; NHK footage shows normal traffic in Hachinohe and a Hashikami resident reports only a fallen picture frame as emergency services monitor for aftershocks.The quake follows a 7.1-magnitude earthquake in Venezuela that has caused widespread communications outages there; seismologists point to
Japan's location on the Pacific Ring of Fire and recall the 9.0-magnitude quake that triggered a tsunami killing roughly 18.5K and the Fukushima nuclear disaster.