On the scale up to 7 used in Japan the tremor comes in at 4. The Japanese are a sturdy lot, this wont bother them.

  • No tsunami threat
  • JMA have the intensity at 5, depth of 50km
  • NIED have it at 4 (an earlier report admittedly, the JMA appears to be a later report)

USGS report it at magnitude 4.8

  • depth 49km

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JMA is the Japan Meteorological Agency

NIED is Japan's National Research Institute for Earth Science and Disaster Resilience