Japan issues tsunami alert for Iwate after 6.8-magnitude quake: Waves up to 1 metre expected; here’s how Tokyo's skyscrapers withstand quakes

Earthquake and Tsunami Advisory in Japan's Iwate Prefecture

A powerful earthquake with a magnitude of 6.8 struck off the coast of Iwate prefecture, Japan, on Sunday. The event occurred around 5:03 pm local time in the North Pacific Ocean at a depth of approximately 30 kilometers, according to data from the Japan Meteorological Agency, the US Geological Survey (USGS), and India’s National Center for Seismology (NCS).

Tsunami Warning and Safety Measures

Authorities promptly issued a tsunami warning for the Iwate coastline, advising that waves could reach up to one metre in height. Japan’s national broadcaster NHK reported small tsunami waves offshore and urged residents to stay away from coastal regions. Despite the warning, live footage showed calm waters along the shore.

"The memory of the 2011 earthquake and tsunami, one of Japan’s worst disasters that killed or left missing about 18,500 people and triggered the Fukushima nuclear crisis, continues to loom large."

Tokyo’s Earthquake-Resistant Skyscrapers

Tokyo's skyline features skyscrapers designed to endure seismic activity, helping to minimize damage and ensure safety during earthquakes like this recent one.

Summary

The recent 6.8-magnitude quake off Iwate led to a cautious tsunami alert, reflecting ongoing concerns from Japan’s devastating 2011 disaster and the importance of earthquake-resistant infrastructure.

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Bhaskar English Bhaskar English — 2025-11-09