Earthquake sparks Japan tsunami warning

An earthquake with a magnitude of 6.9 hit northern Japan on Tuesday, issuing tsunami advisories for much of the nation’s northern Pacific coast.
The US Geological Survey initially put Tuesday’s quake at a magnitude of 7.3 before downgrading it. The Japan Meteorological Agency also reported a preliminary magnitude of 7.3.

Live Japan earthquake: 6.9 magnitude quake prompts tsunami warning 

Tsunami warning issued in Fukushima prefecture off the east coast

The epicentre of the earthquake, which was felt in Tokyo, was off the coast of Fukushima prefecture at a depth of about 10 km (6 miles), the agency said.
There were no immediate reports of damage or injury after the quake struck at 5.59am (2059 GMT).
Tokyo Electric Power Co was checking its nuclear plants in Fukushima for damage, public broadcaster NHK said. The utility could not immediately be reached by Reuters. Tohoku Electric Power Co said there was no damage to its Onagawa nuclear plan.
Television footage showed ships moving out to sea from Fukushima harbours, as the meteorological agency warned of a tsunami of 3 metres (10ft) for Fukushima, where Tepco’s Daiichi nuclear plant was devastated in a March 2011 quake and tsunami.
Earthquakes are common in Japan, one of the world’s most seismically active areas. Japan accounts for about 20% of the world’s earthquakes of magnitude 6 or greater.

https://www.theguardian.com/world/2016/nov/21/japan-earthquake-tsunami-warning