98-ft tsunami, can kill 1,99,000: What's behind Japan's rare ‘megaquake’ advisory

Japan authorities hope the alert will encourage residents to prepare for the worst, recalling the 2011 catastrophe that killed nearly 20,000 people.

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Dec 9, 2025 - 17:01
98-ft tsunami, can kill 1,99,000: What's behind Japan's rare ‘megaquake’ advisory
Japan authorities hope the alert will encourage residents to prepare for the worst, recalling the 2011 catastrophe that killed nearly 20,000 people.
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