Overview

• The Tokyo Metropolitan Government published an AI-generated clip, and the Cabinet Office issued a separate simulation tied to disaster-preparedness messaging.
• Government estimates in the materials project about 1.7 billion cubic meters of ash overall, with roughly 490 million cubic meters settling on streets, buildings and land.
• The scenarios suggest ash could reach the capital within one to two hours and that an eruption might continue for around two weeks, leaving a layer a few centimeters deep in Tokyo.
• The videos warn of halted road, rail and air travel, likely power and communications outages, and disruptions to food distribution and water treatment, urging stockpiling and mask use.
• Scientists report no signs of an imminent Fuji eruption, and some seismologists criticize the heightened warnings as alarmist; reporters note this is the first use of AI to visualize such a Fuji scenario.