January 1975 Eruption of Marapi

Name: January 1975 Eruption of Marapi
Start: 1975-01
Location: Marapi, Indonesia

January 1975 · VEI 2 · 80 deaths

Marapi in Indonesia erupted in January 1975 with a Volcanic Explosivity Index of 2. The eruption killed 80 people.

Where it erupted

Marapi, Indonesia, with its other significant eruptions.

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The eruption

Date: January 1975
Volcano: Marapi, complex volcano
Country: Indonesia
Volcanic Explosivity Index: 2, moderate (eruption column 1 to 5 km)
Killed by: Mudflows and lahars
Location: 0.380° S, 100.474° E

The toll

Deaths: 80
Damage: Severe (about $5 to $25 million)
Houses destroyed: Many (101 to 1,000)

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.

About 300mm of rainfall mobilized old lahar deposit and other volcanic material on N and E flanks. Landslides travelled as much as 20 km downslope and damaged 5 villages and farmland.

Other significant eruptions of Marapi

Every eruption in 1975 The 1900s Marapi Earthquakes near Marapi

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 2367.