Pertinent portions of past information releases are below. Full archive copies of all reports can be found in the Updates section of this site.

• Thursday, February 24, 2005 11:55 AM AST
  • Previous Level of Concern Color Code: Green
    Current Level of Concern Color Code: YELLOW

    This morning, the Alaska Volcano Observatory (AVO) received a report of a ash and steam emissions from Korovin Volcano on Atka Island, that occurred at approximately 7:00 PM local time (8:00 PM AST) February 23, 2004. According to residents of Atka village, the initial ash burst reached a height of approximately 8,000 feet (2440m) above sea level and drifted eastward. The initial burst was followed by several smaller ash and steam bursts. No ash fall was reported in Atka village, nor were there any reports of accompanying volcanic odors, earthquakes or volcanic explosions. Satellite images of the volcano examined by AVO do not clearly show the presence of ash or any thermal anomalies. Telephone conversations with residents of Atka this morning (2/24/05) indicate that the volcano is steaming with some vigor.

    These observations indicate that a minor eruptive episode of Korovin Volcano may be in progress and therefore AVO is raising the level of concern color code of Korovin Volcano from Green to YELLOW.

    Low-level steam and ash emissions may continue and could pose a hazard to people and low- to medium-flying aircraft in the vicinity of the volcano. If the eruption continues and begins to intensify, light ash fall could occur on parts of Atka Island, including the village of Atka. Residents should take the necessary precautions for dealing with an episode of ash fall. Information about dealing with an ash fall event is contained on the following internet site: http://vulcan.wr.usgs.gov/Hazards/Safety/what_to_do_during_ashfall.html or by contacting AVO.

• Friday, February 25, 2005 12:15 PM AST
  • Current Level of Concern Color Code: YELLOW

    On February 24, 2005, AVO received a report of ash and steam emissions from Korovin Volcano on Atka Island, that occurred at approximately 7:00 PM local time (8:00 PM AST) February 23, 2005. According to residents of Atka village, the initial ash burst reached a height of approximately 8,000 feet (2440m) above sea level and drifted eastward. Since then, we have received no new reports of activity at Korovin Volcano. Cloud cover over Atka Island has prohibited satellite views of the volcano.

    It is possible that a minor eruptive episode of Korovin Volcano may be developing or is in progress. Low-level steam and ash emissions may occur intermittently and could pose a hazard to people and low- to medium-flying aircraft in the vicinity of the volcano. If eruptive activity increases, light ash fall could occur on parts of Atka Island, including the village of Atka. Residents should take the necessary precautions for dealing with an episode of ash fall. Information about dealing with an ash fall event is contained on the following Internet site: http://vulcan.wr.usgs.gov/Hazards/Safety/what_to_do_during_ashfall.html or by contacting AVO.

    Korovin Volcano presently is not being seismically monitored by a standard AVO seismic network. However, a seismic station that is part of a regional seismic network operated by the Alaska Earthquake Information Center is located in Atka village and provides some monitoring capability.

• Friday, March 04, 2005 3:50 PM AST
  • Current Level of Concern Color Code: Not assigned.

    Since the report of ash and steam emissions on February 24, 2005, we have received no new reports of activity at Korovin Volcano. Cloud cover over Atka Island has prohibited satellite views of the volcano and no unusual siesmicity has been registered at a seismic station in the village of Atka.

    Korovin Volcano presently is not being seismically monitored by a standard AVO seismic network. It is AVO policy to not assign color code Green to a volcano that does not have a seismic network on it. Therefore, the color code for Korovin is not assigned.