A small tsunami hit the Onagawa Nuclear Plant early Saturday following a 7.1 magnitude earthquake off the coast.
The tsunami was about 1.8 feet (55 cm).
The plant is able to withstand a 55-foot (17 meter) tsunami, according to NHK.
Onagawa is part of Ishinomaki City, which is part of the east coast of Japan that is under a tsunami advisory following the quake, which hit about 200 miles off the coast.
The plant is not currently in service.
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