Tsunami Threat Passes After Magnitude 6.9 Earthquake Off Iwate
A magnitude 6.9 earthquake struck off the coast of Iwate Prefecture on Sunday evening, registering a 4 on Japan's seismic intensity scale. It triggered tsunami waves reaching 20 centimeters in some locations, prompting evacuation orders in certain municipalities.
Earthquake and Tsunami Details
The quake occurred at 5:03 p.m., leading to the issuance of a tsunami advisory for Iwate Prefecture, warning of waves up to 1 meter high. The advisory was lifted shortly after 8 p.m. The Japan Meteorological Agency initially reported the quake as magnitude 6.7, later revising it to 6.9.
- A 20 cm tsunami wave was recorded at Ofunato Port at 6:25 p.m.
- Another 20 cm wave appeared at Kuji Port at 5:52 p.m.
- Shindo 4 intensity was felt in Morioka city, Yahaba town in Iwate, and Wakuya town in Miyagi Prefecture.
Aftershocks and Impact
As of 8:30 p.m., 11 aftershocks occurred, including one measuring magnitude 6.3 and intensity shindo 3. No injuries or damage have been reported initially.
Local Infrastructure Update
- East Japan Railway reported a brief power loss on the Tohoku Shinkansen line, temporarily suspending service between Sendai and Shin-Aomori stations.
- Tohoku Electric Power confirmed no abnormalities at the Onagawa nuclear power plant in Miyagi Prefecture.
"The quake was initially reported as magnitude 6.7, with the Japan Meteorological Agency later giving the revised figure."
Summary: The magnitude 6.9 earthquake off Iwate caused minor tsunami waves and brief disruptions, but no injuries or significant damage were reported.
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