Atka

Photo of this volcano
  • United States
  • Alaska
  • Stratovolcano(es)
  • 1812 CE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 52.331°N
  • 174.139°W

  • 1448 m
    4749 ft

  • 311160
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Bulletin Report: June 1996 (BGVN 21:06) Citation IconCite this Report


Eruption of volcanic ash

On 29 June, Japan Airlines reported volcanic ash erupting from Atka. In addition, GEOS-9 satellite images showed a possible small ash cloud in the immediate vicinity of Atka. In early May 1995 residents of Atka village observed a small plume-like cloud over Kliuchef and reported a strong sulfur smell (BGVN 20:05).

[The 1996 eruption described here was later discredited.]

Information Contacts: Alaska Volcano Observatory (AVO), a cooperative program of a) U.S. Geological Survey, 4200 University Drive, Anchorage, AK 99508-4667, USA, b) Geophysical Institute, University of Alaska, PO Box 757320, Fairbanks, AK 99775-7320, USA, and c) Alaska Division of Geological & Geophysical Surveys; NOAA/NESDIS Synoptic Analysis Branch (SAB), Room 401, 5200 Auth Road, Camp Springs, MD 20746, USA.

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

Bulletin Reports - Index


Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

11/1993 (BGVN 18:11) "Rumbling" and degassing accompanies M 5.1 earthquake

05/1995 (BGVN 20:05) Small plume-like cloud over Kliuchef and very strong sulfur smell

06/1996 (BGVN 21:06) Eruption of volcanic ash




Information is preliminary and subject to change. All times are local (unless otherwise noted)


November 1993 (BGVN 18:11) Citation IconCite this Report


"Rumbling" and degassing accompanies M 5.1 earthquake

On 10 December AVO reported the following. "On 4 December, following a M 5.1 earthquake at 1836 beneath the . . . island of Atka, residents of Atka village reported "rumbling" from the cluster of volcanoes that forms the N part of the island. At the same time, residents observed increased steaming from a fumarolic area on the flank of Kliuchef volcano and noted a distinct sulphur smell. A check of satellite imagery did not confirm any change in the surface state of the volcanoes. Late this week, the weather had deteriorated and no visual observations of the volcanoes were possible. . . ."

Information Contacts: AVO.


May 1995 (BGVN 20:05) Citation IconCite this Report


Small plume-like cloud over Kliuchef and very strong sulfur smell

Observers in the village of Atka on Atka Island in the central Aleutians reported a very strong sulfur smell on 1 May, and to a lesser extent on 4 May when they observed a small plume-like cloud over Kliuchef. Fumarolic areas exist on or near both Korovin and Kliuchef volcanoes, N of the village. Korovin was active most recently in 1987, and Kliuchef has had Holocene activity. Satellite images did not reveal any plume-like clouds associated with the island, however, a "hot-spot" possibly of fumarolic areas, was observed. A similar sulfur smell was reported by residents in December 1993, at about the same time they felt rumbling from a M 5.1 earthquake (BGVN 18:11).

Information Contacts: Alaska Volcano Observatory (AVO), a cooperative program of a) U.S. Geological Survey, 4200 University Drive, Anchorage, AK 99508-4667 USA, b) Geophysical Institute, University of Alaska, PO Box 757320, Fairbanks, AK 99775-7320, USA, and c) Alaska Division of Geological & Geophysical Surveys, 794 University Ave., Suite 200, Fairbanks, AK 99709, USA.


June 1996 (BGVN 21:06) Citation IconCite this Report


Eruption of volcanic ash

On 29 June, Japan Airlines reported volcanic ash erupting from Atka. In addition, GEOS-9 satellite images showed a possible small ash cloud in the immediate vicinity of Atka. In early May 1995 residents of Atka village observed a small plume-like cloud over Kliuchef and reported a strong sulfur smell (BGVN 20:05).

[The 1996 eruption described here was later discredited.]

Information Contacts: Alaska Volcano Observatory (AVO), a cooperative program of a) U.S. Geological Survey, 4200 University Drive, Anchorage, AK 99508-4667, USA, b) Geophysical Institute, University of Alaska, PO Box 757320, Fairbanks, AK 99775-7320, USA, and c) Alaska Division of Geological & Geophysical Surveys; NOAA/NESDIS Synoptic Analysis Branch (SAB), Room 401, 5200 Auth Road, Camp Springs, MD 20746, USA.

Eruptive History


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


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1996 Jun 29 ] [ Unknown ] Discredited    
[ 1995 May 1 ] [ Unknown ] Uncertain 1  
1812 Unknown Confirmed 3 Historical Observations Sarichef or more probably Kliuchef

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.

Photo Gallery


An aerial view from the WNW shows a young satellitic vent on the northeast shoulder of Kluichef volcano. Clouds touch the tip of Sarichef volcano in the center distance. Kliuchef lies within a Pleistocene Atka caldera and is the most recently active of the post-caldera stratovolcanoes at Atka.

Photo by Game McGimsey, 2004 (Alaska Volcano Observatory, U.S. Geological Survey).
See title for photo information.

Smithsonian Sample Collections Database


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

Affiliated Sites