Takawangha

Photo of this volcano
  • United States
  • Alaska
  • Stratovolcano
  • 1550 CE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 51.873°N
  • 178.006°W

  • 1449 m
    4753 ft

  • 311090
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Weekly Report: 8 February-14 February 2017 Citation IconCite this Report


On 10 February AVO stated that the seismic swarm that began at Takawangha on 23 January had significantly declined the previous week and that seismicity was nearly at background levels. The Aviation Color Code was lowered to Green and the Volcano Alert Level was lowered to Normal.

Source: US Geological Survey Alaska Volcano Observatory (AVO)

Weekly Reports - Index


2017: January | February


8 February-14 February 2017 Citation IconCite this Report


On 10 February AVO stated that the seismic swarm that began at Takawangha on 23 January had significantly declined the previous week and that seismicity was nearly at background levels. The Aviation Color Code was lowered to Green and the Volcano Alert Level was lowered to Normal.

Source: US Geological Survey Alaska Volcano Observatory (AVO)


1 February-7 February 2017 Citation IconCite this Report


On 3 February AVO stated that the seismic swarm that began at Takawangha on 23 January continued but at a decreased rate and intensity. The rate of earthquakes peaked at 190 events on 24 January, and since then had steadily declined; 2-8 events per day were recorded from late January to 3 February. Most of the events were located 7-8 km ESE, at shallow depths. The Aviation Color Code remained at Yellow and the Volcano Alert Level remained at Advisory.

Source: US Geological Survey Alaska Volcano Observatory (AVO)


25 January-31 January 2017 Citation IconCite this Report


On 27 January AVO stated that the seismic swarm that began at Takawangha on 23 January had significantly decreased during the previous day. The rate of earthquakes peaked at 190 events on 24 January and had steadily decreased to 22 detected on 27 January. Most of the events were located 7-8 km ESE, at shallow depths. The swarm continued at a decreased rate and intensity through 31 January. The Aviation Color Code remained at Yellow and the Volcano Alert Level remained at Advisory.

Source: US Geological Survey Alaska Volcano Observatory (AVO)


18 January-24 January 2017 Citation IconCite this Report


AVO reported that an energetic earthquake swarm on Tanaga Island began on 23 January, with earthquakes located 6-7 km ESE of Takawangha volcano, and was possibly due to brittle failure in the surrounding rock caused by magma movement. AVO raised the Aviation Color Code to Yellow and Alert Level to Advisory.

Source: US Geological Survey Alaska Volcano Observatory (AVO)


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

The Global Volcanism Program has no synonyms or subfeatures listed for Takawangha.

Eruptive History


There is data available for 1 Holocene eruptive periods.


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1550 (?) Unknown Confirmed   Radiocarbon (uncorrected)

Deformation History


There is no Deformation History data available for Takawangha.

Emission History


There is no Emissions History data available for Takawangha.

Photo Gallery


Broad Takawangha volcano (left), seen here from the east, is a 1449-m-high, youthful stratovolcano on northern Tanaga island with an ice-filled caldera. Numerous small post-caldera tephra cones are located within the caldera, as well as on its rim and flanks. The youngest cones are some of those in the caldera. No historical eruptions are known from Takawangha, in contrast to sharp-peaked Tanaga volcano (right), which occupies the NW tip of Tanaga Island.

Photo by Tom Edgarton, 1986 (U.S. Fish and Wildlife Service).
See title for photo information.
The broad Takawangha volcano is seen looking east from the summit of East Tanaga. The 1449-m-high, youthful volcano lies across a saddle from historically active Tanaga volcano to the west. The summit of the dominantly basaltic to basaltic-andesite volcano is largely ice covered, with the exception of five Holocene craters that during the last few thousand years produced explosive eruptions and lava flows that reached the lower flanks of the volcano.

Photo by Michelle Coombs, 2003 (Alaska Volcano Observatory, U.S. Geological Survey).
See title for photo information.

Smithsonian Sample Collections Database


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

Affiliated Sites