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Tsunami Advisories Lifted After Offshore Quakes Off Iwate in Northeast Japan

Aftershocks persist along the Tohoku coast, with officials reporting small tsunami waves, service delays and no major injuries.

Image
Costas de Iwate, en Japón.
Una alerta de tsunami en Japón en una televisión, en una imagen de archivo.
Fotografía de archivo en donde se ve el detalle de un sismógrafo.

Overview

  • Japan’s Meteorological Agency revised the Nov. 9 main shock to magnitude 6.9 at about 17:03 local time and about 10 km depth, while the USGS measured 6.8.
  • The JMA issued a tsunami advisory for Iwate with waves estimated up to 1 meter, then lifted it hours later after observed arrivals of roughly 10–20 cm at Miyako, Kuji, Ofunato and Ominato.
  • More than ten aftershocks followed, the largest around magnitude 6.3, and a separate magnitude 6.2 quake on Nov. 10 prompted a new, lower-level advisory forecasting tide changes up to 20 cm.
  • Rail service, including Shinkansen lines, experienced delays and brief power outages were reported, and officials said nearby nuclear facilities showed no anomalies.
  • Authorities caution residents to expect additional shaking over the coming days and to heed official instructions and coastal warnings when issued.