Japan on high alert for 'huge' second quake after lifting tsunami warning

Japan remains braced for a potentially more powerful seismic event in the coming days, even as immediate tsunami warnings are lifted. | Contesto: cronaca

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• Japan on high alert for 'huge' second quake after lifting tsunami warning

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The Japan Meteorological Agency (JMA) has issued a stark warning that the nation could be struck by another, potentially stronger earthquake within the next week, keeping the country on high alert just hours after lifting a tsunami advisory triggered by a significant tremor earlier today. The initial quake, which struck off the coast of Fukushima prefecture, prompted urgent evacuation orders for coastal residents and sent a wave of anxiety across a nation with deeply ingrained memories of past seismic disasters. While the resulting tsunami waves were relatively small, the agency's subsequent forecast of a possible 'huge' aftershock has shifted public and official focus from response to a tense state of preparedness. This warning is not based on vague speculation but on established seismic patterns observed by Japanese scientists. The JMA has explicitly stated there is a 10-20% chance of an earthquake registering magnitude 7.0 or higher occurring in the same region over the next several days. Such an event would release significantly more energy than the initial tremor and could generate a far more destructive tsunami. The agency's decision to publicize this probabilistic forecast reflects a policy of maximum transparency, aiming to ensure communities do not let their guard down following the all-clear on the immediate tsunami threat. The geographical and historical context of the warning amplifies its gravity. The seismic activity is centered near the same subduction zone that produced the catastrophic magnitude 9.0 earthquake and tsunami on March 11, 2011. That disaster led to the loss of nearly 20,000 lives and triggered the meltdowns at the Fukushima Daiichi nuclear power plant. While there are no reports of abnormalities at nuclear facilities from today's quake, the memory of 2011 fundamentally shapes the official response and public psyche. Every significant tremor in this region is now measured against that benchmark, with emergency protocols and engineering standards having been overhauled in its aftermath. Across affected prefectures, the immediate aftermath has been a mix of relief and renewed vigilance. Television broadcasts repeatedly air the JMA's...

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Categoria: cronaca