The Hōei Eruption of Mount Fuji starts on December 16, 1707 (23rd day of the 11th month of the year Hōei 4) and ends about January 1, 1708 (9th day of the 12th month of the year Hōei 4) during the Edo period.Although it brings no lava flow, the Hoei eruption releases some eight hundred million cubic meters of volcanic ash, which spreads over vast areas around the volcano, even reaching Edo almost one hundred kilometers away.
Cinders and ash fall like rain in Izu, Kai, Sagami, and Musashi provinces.
In Edo, the volcanic ash is several centimeters thick.
The eruption occurs on Mount Fuji's east–northeast flank and forms three new volcanic vents, named No. 1, No. 2, and No. 3 Hōei vents.
The catastrophe develops over the course of several days—an initial earthquake and explosion of cinders and ash is followed some days later with the more forceful ejections of rocks and stones.
Mount Fuji has not erupted since.
