Iliamna, United States

Stratovolcano · 3,053 m (10,016 ft) · Alaska-SW

Iliamna is a stratovolcano in the United States, 3,053 m (10,016 ft) high. Its last known eruption: 1900 to 1963. NOAA records no significant eruption here.

Iliamna on the map

Iliamna 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 15:32 UTC. USGS threat ranking: High Threat.

Normal / Green Alaska Volcano Observatory rates Iliamna at alert level Normal, aviation color code Green, since 2026-08-14 21:05 UTC.

AVO Iliamna GREEN/NORMAL - Large avalanche detected on eastern flank. No increase in volcanic unrest.

The latest notice The observatory’s page

The volcano

Type: Stratovolcano
Elevation: 3,053 m (10,016 ft)
Country: United States
Region: Alaska-SW
Summit: 60.032° N, 153.090° W
Last known eruption: 1900 to 1963
Holocene activity known from: Historical
Smithsonian volcano number: 313020

Significant eruptions

NOAA records eruptions that killed, did damage, were very large, or set off a tsunami or earthquake.

None on record.

Around it

The volcanoes within 300 km.

Earthquakes near Iliamna Volcanic 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.