Japan Issues Rare 'Megaquake' Advisory After 7.5 Quake, Warns of 98-Foot Tsunami and 1.99L Deaths

Japan has issued a rare 'megaquake advisory' after a 7.5 magnitude earthquake struck off its eastern coast, raising concerns about a potential larger quake in the region. Although the initial quake caused only minor damage and injuries, officials are warning of a catastrophic 98-foot tsunami and up to 1.99 lakh deaths if a more powerful earthquake occurs. The advisory, which spans 182 municipalities, is not a forecast but aims to encourage residents to be prepared for the worst. Authorities are urging residents in coastal areas to stay alert, keep emergency kits ready, and evacuate quickly if needed. The Japan Meteorological Agency (JMA) points out that the recent quake has increased seismic risks along the Hokkaido-Sanriku coast, where the Pacific Plate dives beneath Japan, forming the Japan Trench and Chishima Trench. These zones are responsible for many of the country's largest historic earthquakes. Experts warn that another offshore megaquake in the region could unleash a devastating tsunami, destroy over 2.2 lakh structures, and cause economic losses of nearly 31 trillion yen ($198 billion). In the event of a disaster in winter, up to 42,000 people could suffer from hypothermia. The current advisory is more cautious and specific than a similar one issued last year, which was criticized for its ambiguity. Japan's north is at a higher risk due to its unique geography, where the Pacific Plate interacts with the Eurasian Plate, creating a zone prone to large earthquakes.