GVP volcano 311120 · no holder yet
Great Sitkin
Great Sitkin is a 1,740 m stratovolcano in the United States, erupting as recently as 2026.
USGS: alert level WATCH, aviation colour code ORANGE (Alaska Volcano Observatory, 2026-10-12 19:02:18 UTC).
Ongoing in the Smithsonian's record since May 2021, as of March 2026.
- Type
- Stratovolcano (composite landform)
- Summit
- 1,740 m above sea level
- Rock
- Andesite / Basaltic Andesite
- Setting
- Subduction zone, intermediate, 15–25 km
- Last eruption
- 2026
- Largest known
- VEI 2, explosive, 2021
- Eruptions
- 9 confirmed in the record
- Where
- 52.08°N 176.13°W · United States
- Region
- Aleutian Ridge Volcanic Arc, North America Volcanic Regions
- Record
- Global Volcanism Program, volcano 311120
Not a hazard warning. For safety information follow USGS Volcano Hazards Program.