Volcanoes of the United States

Novarupta, United States

Caldera · 841 m (2,759 ft) · Alaska Peninsula

Novarupta is a caldera in the United States, 841 m (2,759 ft) high. Its last known eruption: 1900 to 1963. NOAA records 1 significant eruption here, which killed 2 people where the toll is counted.

Novarupta on the map

Novarupta and the volcanoes within 300 km, colored by when each last erupted.

  • Since 1964
  • 1900 to 1963
  • 1800s
  • AD 1 to 1799
  • Before AD 1, or undated

Open the live map with volcanic ash advisories

Now

From the USGS Volcano Hazards Program, read 22:14 UTC. USGS threat ranking: High Threat.

Normal / Green Alaska Volcano Observatory rates Novarupta at alert level Normal, aviation color code Green, since 2022-03-18 23:33 UTC.

AVO Novarupta GREEN/NORMAL - Aviation color code and alert level changed to GREEN/NORMAL due to reestabilished communication links to instrumental monitoring data.

The latest noticeThe observatory’s page

The volcano

Type
Caldera
Elevation
841 m (2,759 ft)
Region
Alaska Peninsula
Summit
58.266° N, 155.159° W
Last known eruption
1900 to 1963
Holocene activity known from
Historical
Smithsonian volcano number
312180

Significant eruptions

1 on record, newest first.

Around it

The volcanoes within 300 km.

Earthquakes near NovaruptaVolcanic ash advisories on the live map

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. Alert levels, color codes and notices from the USGS Volcano Hazards Program and its observatories, public domain. Volcano numbers are the Smithsonian Institution’s Global Volcanism Program’s.