December 1331 Eruption of Asosan
Asosan in Japan erupted in December 1331 with a Volcanic Explosivity Index of 2.
Where it erupted
Asosan, Japan, with its other significant eruptions.
The eruption
The toll
- Deaths
- Few (about 1 to 50)
Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.
What the record says
NCEI’s account, from the sources it cites.
Milne says all the people of Hojo were destroyed in 19-month eruption, but other compilers list no fatalities.
Other significant eruptions of Asosan
More
Every eruption in 1331The 1300sAsosanEarthquakes near Asosan
Sources
Volcanoes and significant eruptions from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. Volcano numbers are the Smithsonian Institution’s Global Volcanism Program’s. NCEI event 949.