A tsunami warning has been issued for the Miyagi Prefecture, marked in red on the map above.
The same area was hit by a devastating earthquake and tsunami in March 2011.
That quake triggered fuel-rod meltdowns at the Fukushima nuclear plant, causing radiation leakage, contamination of food and water and mass evacuations in the world's worst nuclear crisis since Chernobyl in 1986.
More top news
Ian Bashford was just 200 metres from the finish line when he was struck by the car.
More than 60 pooches came from around the world to see who was top dog on the waves.
Baring your bottom in public could get you two-months behind bars - or six months if you're a repeat offender.