Overview

• Tokyo’s metropolitan government released a three‑minute generative‑AI video visualizing a Mount Fuji eruption to coincide with Volcano Disaster Prevention Day.
• The simulation projects volcanic ash reaching central Tokyo in roughly one to two hours, with about 2 to 10 centimeters of accumulation.
• Depicted impacts include halted trains and flights, engine failures, power outages, contaminated water systems, and potential roof collapses.
• Government guidance issued in March advises residents to stay home and maintain supplies, with evacuation recommended only once ash depth exceeds around 30 centimeters, particularly near wooden buildings.
• Authorities say there are no signs of an imminent eruption, with planning informed by estimates of about 490 million cubic meters of ash in a full‑scale event and with some experts criticizing the film as alarmist.