A 7.3 magnitude quake struck off Japan's eastern coast, triggering a small tsunami and sparking evacuations.
A one-metre wave hit Ishinomaki in Miyagi Prefecture and many people heeded calls to move to higher ground before all alerts were later lifted.
According to the US Geological Survey, there were no immediate reports of any fatalities after the 7.3-magnitude quake that was followed by a 6.2 aftershock.
The quakes epicentre was about 245km south-east of Kamiashi at a depth of about 36km,.
Miyagi was hit by a devastating earthquake and tsunami in March 2011.