Mount Fuji’s last confirmed eruption began in 1707 and lasted for two weeks. Experts say an eruption on a similar scale could blanket wide areas of Tokyo, Kanagawa prefecture and elsewhere with 10 cm or more of ash. The panel, made up of volcanologists and disaster-preparedness experts, said in its report that it would not be realistic for residents of densely populated Tokyo and its surrounding prefectures to flee the region at once.

AloJapan.com