June 3, 1991 Eruption of Unzendake

Name: June 3, 1991 Eruption of Unzendake
Start: 1991-06-03
Location: Unzendake, Japan

June 3, 1991 · VEI 1 · 43 deaths

Unzendake in Japan erupted on June 3, 1991 with a Volcanic Explosivity Index of 1. The eruption killed 43 people.

Where it erupted

Unzendake, Japan, with its other significant eruptions.

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The eruption

Date: June 3, 1991
Volcano: Unzendake, complex volcano
Country: Japan
Volcanic Explosivity Index: 1, small (eruption column 100 m to 1 km)
Killed by: Pyroclastic flows, surges and direct blasts
Location: 32.761° N, 130.299° E

The toll

Deaths: 43

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.

A pyroclastic flow and surge killed 43, including 3 volcanologists.

Other significant eruptions of Unzendake

Every eruption in 1991 The 1900s Unzendake Earthquakes near Unzendake This day in weather history

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 933.