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Magnitude 5 Earthquake Strikes Off Mountainous Nagano in Japan, NHK ...

The Japan Meteorological Agency said the quake reached upper-5 intensity in Omachi and lower-5 in Nagano city, with no tsunami risk.

  • A magnitude 5.0 earthquake struck northern Nagano Prefecture at 1:20 p.m. on Saturday, according to the Japan Meteorological Agency, with the epicenter at a depth of 10 kilometers.
  • The quake registered a seismic intensity of upper-5 on the Japan 1 to 7 scale, with an upper 5 recorded in Omachi and a lower 5 in Nagano.
  • An intensity of 4 was recorded in the village of Ogawa, while the city of Matsumoto registered an intensity of 3.
  • There was no tsunami risk associated with the quake, though it remained unclear immediately if there had been any injuries or damage in the area.
  • Japan accounts for about a fifth of the world's earthquakes of 6 magnitude or greater, reflecting the nation's position as one of the world's most seismically active regions.
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Kyodo News+ broke the news in Japan on Saturday, April 18, 2026.
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