More than 520,000 people in Japan would be urged to evacuate for a week if an alert is issued for a possible megaquake in the Nankai Trough off the country's Pacific coast, a government survey showed. https://www.japantimes.co.jp/news/2025/08/20/japan/megaquake-520000-evacuate/?utm_medium=Social&utm_source=mastodon #japan #nankaitrough #earthquakes