Great Sitkin, United States

Stratovolcano · 1,740 m (5,709 ft) · Aleutian Is

Great Sitkin is a stratovolcano in the United States, 1,740 m (5,709 ft) high. Its last known eruption: 1964 or later. NOAA records no significant eruption here.

Great Sitkin on the map

Great Sitkin 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 11:12 UTC. USGS threat ranking: High Threat.

Watch / Orange Alaska Volcano Observatory rates Great Sitkin at alert level Watch, aviation color code Orange, since 2026-09-24 17:39 UTC.

AVO Great Sitkin ORANGE/WATCH - Slow eruption of lava within the summit crater continues.

Notices this week

2026-09-24 17:39 UTC: Daily Update, Alaska Volcano Observatory
2026-09-23 17:54 UTC: Daily Update, Alaska Volcano Observatory
2026-09-22 19:46 UTC: Daily Update, Alaska Volcano Observatory
2026-09-21 17:24 UTC: Daily Update, Alaska Volcano Observatory
2026-09-20 19:15 UTC: Daily Update, Alaska Volcano Observatory
2026-09-19 17:37 UTC: Daily Update, Alaska Volcano Observatory
2026-09-18 18:35 UTC: Weekly Update, Alaska Volcano Observatory
2026-09-17 21:06 UTC: Daily Update, Alaska Volcano Observatory

The latest notice The observatory’s page

The volcano

Type: Stratovolcano
Elevation: 1,740 m (5,709 ft)
Country: United States
Region: Aleutian Is
Summit: 52.076° N, 176.130° W
Last known eruption: 1964 or later
Holocene activity known from: Historical
Smithsonian volcano number: 311120

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 Great Sitkin 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.