There was no danger of tsunami, or undersea waves set off by volcanic activity or earthquakes, the agency said. The earthquake slightly swayed office buildings in Tokyo, but it was most strongly felt in northwestern cities, including Ofunato in Miyagi and Morioka in Iwate Prefecture. Ofunato, a Pacific coastal town, is 250 miles, north of Tokyo, and Morioka is 290 miles north of the capital. A quake of magnitude 5 can cause damage to homes if it occurs in a residential area.
Japan is one of the world's most earthquake-prone nations.
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