An earthquake measuring 6.8 on the Richter scale struck off the eastern coast of Japan at 08:03 GMT on Sunday, according to the US Geological Survey.
The Japan Meteorological Agency has announced a tsunami warning for the eastern coastline of Iwate Prefecture.
Waves as high as 1 meter (3.28 feet) may hit the Iwate coast, the agency warned.
This alert aims to prepare residents and authorities for potential impacts along the affected coastal areas.
A strong 6.8 magnitude earthquake near Iwate Prefecture has prompted tsunami warnings with possible waves up to 1 meter along the eastern coast.
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