Magnitude 5.5 earthquake shakes Chiba, no tsunami threat

· Climate · Japan

A magnitude 5.5 earthquake struck Japan's Chiba prefecture on Wednesday, shaking Tokyo and nearby prefectures, according to Japan's meteorological authorities. The quake registered up to lower 5 on Japan's seven-point seismic scale, with a depth of about 50 to 52 kilometers in the town of Yokoshibahikari. There was no tsunami threat. No major damage or injuries were immediately reported.

Why it matters：Earthquakes near Tokyo remind the region of its exposure to seismic risk, which shapes infrastructure and disaster planning for one of the world's largest metropolitan economies.

Key points

  • The quake measured lower 5 on Japan's seismic scale.
  • Its depth was about 50 to 52 kilometers.
  • No tsunami warning was issued.

Sources (original reporting)

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