Yunaska, United States

Shield volcano · 550 m (1,804 ft) · Aleutian Is

Yunaska is a shield volcano in the United States, 550 m (1,804 ft) high. Its last known eruption: 1900 to 1963. NOAA records no significant eruption here.

Yunaska on the map

Yunaska 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 16:31 UTC. USGS threat ranking: Moderate Threat.

Unassigned / Unassigned Alaska Volcano Observatory rates Yunaska at alert level Unassigned, aviation color code Unassigned.

The observatory’s page

The volcano

Type: Shield volcano
Elevation: 550 m (1,804 ft)
Country: United States
Region: Aleutian Is
Summit: 52.639° N, 170.632° W
Last known eruption: 1900 to 1963
Holocene activity known from: Historical
Smithsonian volcano number: 311210

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 Yunaska 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.