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