A magnitude 6.5 earthquake erupted in northeastern Japan early Monday, but no tsunami warning was issued, the weather agency said.
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The M5.5 earthquake affected northeastern Japan and no tsunami warnings were issued
The earthquake at 2:23 a.m. with a 43-kilometer-deep focus from Aomori prefecture recorded a lower level of 5 on the Japanese seismic intensity scale of 7 in Morioka, Iwate prefecture, a level of shocks described as frightening for many people and that creates a need to keep something stable, the Japan Meteorological Agency said.
The strength of the tremor was revised upwards from the initially reported magnitude of 6.3.
The quake was also felt in a part of Hokkaido, the northernmost main island of Japan. No injuries or major damage caused by the quake were reported immediately.
No anomalies were found in the nuclear power plants and affiliated facilities in the region.
While there may be slight changes in sea level in the Pacific coastal area of northeastern Japan, there is no danger of a tsunami, the agency added.