Photo of this volcano
  • United States
  • Alaska
  • Shield
  • 1937 CE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 52.643°N
  • 170.629°W

  • 550 m
    1804 ft

  • 311210
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Yunaska.

The Global Volcanism Program has no Weekly Reports available for Yunaska.

The Global Volcanism Program has no Bulletin Reports available for Yunaska.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1937 Nov 3 1937 Nov 4 Confirmed 3 Historical Observations
[ 1929 ] [ Unknown ] Uncertain    
[ 1873 ] [ Unknown ] Uncertain 2  
1830 Unknown Confirmed 2 Historical Observations
1824 Unknown Confirmed 3 Historical Observations
[ 1817 ] [ Unknown ] Uncertain    

Deformation History

Information about Deformation periods will be available soon.

Emission History

There is no Emissions History data is available for Yunaska.

Photo Gallery

The rim of the summit caldera of Yunaska volcano is seen from an older volcanic center on the western side of the island. The younger, 550-m-high eastern complex consists of a shield volcano capped by two nested calderas and is presumably the source of the island's historical eruptions, first recorded in 1817. A young lava flow at the far right descended through a notch in the caldera rim. In the background are the snow-capped peaks (left-to-right) of Carlisle, Cleveland, and Herbert volcanoes.

Photo by Jim Meyers, 1992 (University of Wyoming, courtesy of Alaska Volcano Observatory).
See title for photo information.

Smithsonian Sample Collections Database

There are no samples for Yunaska in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites