Japan Issues Megaquake Advisory
Analysis based on 9 articles · First reported Dec 09, 2025 · Last updated Dec 10, 2025
The megaquake advisory issued by Japan, following a 7.5-magnitude earthquake, could significantly impact the insurance and construction industries due to potential economic damages estimated at trillions of Japan — Japanese yen. The tourism sector may also face disruptions from event cancellations and reduced travel, as seen with a previous advisory.
Japan has issued a megaquake advisory after a magnitude 7.5 earthquake struck off the eastern coast of Aomori. While the initial quake caused modest damage, the advisory warns of an increased risk of a subsequent magnitude 8 or larger quake within the next week, which could trigger a 30-meter tsunami, kill up to 199,000 people, destroy 220,000 buildings, and cause economic damages of up to 31 trillion Japan — Japanese yen ($198 billion) in the Hokkaido-Sanriku area. The Japan — Japan Meteorological Agency explained that the Pacific Plate's movement along the Japan Trench and Chishima Trench is responsible for past large quakes, including the devastating 2011 event that destroyed the Fukushima Daiichi Nuclear Power Plant. Officials, including Tsukasa Morikubo, are urging residents across 182 municipalities from Hokkaido to Chiba Prefecture to remain calm but prepared, advising them to have emergency bags, discuss evacuation plans, and secure furniture. This advisory is more measured than a previous Nankai Trough megaquake advisory in 2024, which led to panic buying and business closures.
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