Miyagi was one of the hardest hit cities after a 9.0-magnitude earthquake and tsunami hit the country on Friday. Nearly 8,000 people are still missing.
The video shows how close the people were to the fast-moving water, but luckily, they were on a higher piece of ground, which likely saved their lives.
The water comes close to overflowing their embankment before it's diverted by a hillside.
