October 15, 1104 Eruption of Hekla

Name: October 15, 1104 Eruption of Hekla
Start: 1104-10-15
Location: Hekla, Iceland

October 15, 1104 · VEI 5

Hekla in Iceland erupted on October 15, 1104 with a Volcanic Explosivity Index of 5.

Where it erupted

Hekla, Iceland, with its other significant eruptions.

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The eruption

Date: October 15, 1104
Volcano: Hekla, stratovolcano
Country: Iceland
Volcanic Explosivity Index: 5, very large (eruption column over 25 km)
Location: 63.983° N, 19.666° W

The toll

Damage: Limited (under about $1 million)

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.

Damage to land and property.

Other significant eruptions of Hekla

Every eruption in 1104 The 1100s Hekla Earthquakes near Hekla 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 4241.