https://earthquake.usgs.gov/earthquakes/eventpage/us6000sri7/
Article
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USGS records M7.4 earthquake ~100km ENE of Miyako, Japan (revised to 7.7)
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Japan Meteorological Agency issued tsunami warning up to 3m; initial waves ~40cm
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Major seismic event along Sanriku coast, historically active zone
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No major casualties reported in initial coverage
Discussion
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Tokyo and Aomori residents shared firsthand accounts; NERV app praised for early warnings
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Concern that Sanriku quakes could unlock the northern Japan Trench toward Hokkaido
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Ruby Kaigi in Hakodate (nearby) prompted safety wishes from community
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Memorable quip: someone read ‘M 7.4’ and first thought of an AI model version
Discuss on HN