The Tokyo Metropolitan Government has released an AI-created video depicting how an eruption of Mount Fuji could unfold and affect the capital, outlining immediate ashfall and disruptions across transportation and utilities. According to NDTV, the production is intended to raise awareness and emphasize preventive measures, and it notes that Mount Fuji is not expected to erupt imminently.
AI simulation details potential ashfall and disruptions
The video states that volcanic ash would begin falling in heavily populated Tokyo within one to two hours after an eruption. It projects 2–10 cm of ash accumulation across much of the city, with the western part potentially seeing up to 30 cm.
Operational impacts described in the video include halted trains and planes due to ash on tracks and runways. Driving conditions would deteriorate because of reduced visibility and slippery roads. The video also says wet ash could disrupt powerlines, causing widespread power outages, while phone and internet services would be affected.
Health concerns are highlighted, with the possibility of irritation and breathing problems, particularly for people with pre-existing conditions such as asthma. The video suggests stores could quickly run out of food and supplies and that officials might advise stocking up on essentials for at least three days.
Context, guidance, and expert reactions
What the video recommends
The simulation recommends evacuation only if ash accumulates beyond 30 cm, especially near wooden buildings that could be at risk of collapse under heavy ash loads.
The Tokyo Metropolitan Government’s video is framed as a public awareness tool. It emphasizes preparation and outlines how daily life and infrastructure could be affected if Mount Fuji were to erupt, while reiterating that an eruption is not anticipated in the near term.
Some experts have questioned the framing. NDTV cites comments from Professor Kimiro Meguro of the University of Tokyo, who called the simulation “alarmist” and said it represents a worst-case scenario under special conditions. He added that the scenario is not a high-probability event and suggested that officials responsible for volcano disaster management might be motivated to provide ample warnings and information.
NDTV references the video’s narration—“The moment may arrive without any warning”—as part of the broader message urging awareness of potential ashfall timelines and the cascading effects on transportation, power, communications, and daily necessities.
