Its a blackout in Japan-Earthquake , tsunami

A powerful 7.3 magnitude earthquake struck off the coast of Fukushima in northern Japan, triggering a tsunami advisory and plunging more than 2 million homes in the Tokyo area into darkness.

The region is part of northern Japan which was devastated by a deadly 9.0 quake and tsunami 11 years ago that also caused nuclear plant meltdowns.

The Pacific Tsunami Warning Centre said there was no longer a tsunami threat through the Japan Meteorological Agency kept its low-risk advisory in place.

NHK national television said tsunami waves of 20 centimetres (8 inches) already reached shore in one area.