The tsunami struck at 6:38 am (2138 GMT), a TEPCO official told a televised news conference after a magnitude 6.9 earthquake hit the region earlier.
A but TEPCO spokesman told AFP that there were no reports of any problems as a result of the wave.
Japan Meteorological Agency (JMA) earthquake observation division Koji Nakamura speaks during a press conference, after a strong earthquake hit off the coast of Fukushima Prefecture, at the JMA headquarters in Tokyo, Japan, 22 November 2016. According to the US Geological Survey (USGS), an earthquake of 7.3 magnitude, which was later downgraded to 6.9 magnitude, hit northeastern Japan in early morning off the coast of Fukushima Prefecture triggering tsunami warnings. Reportedly a 1.4-meter tsunami was observed in Miyagi Prefecture and authorities are asking the population to leave coastal areas. EPA