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What is Japan’s rare 'megaquake' warning?

Posted

April 21, 2026

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After a powerful 7.4 quake hit off Japan’s northeast coast on Monday, officials issued a rare advisory—the risk of a megaquake has ticked up in the coming week. CNN’s Hanako Montgomery explains what this means for one of the world’s most earthquake-prone countries. #cnn #japan #megaquake

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CNNs Hanako Montgomery

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What is Japan’s rare 'megaquake' warning? · CNN · Sentinel