Kanaga volcano is an active symmetrical stratovolcano rising 1300 m on the northern part of Kanaga Island in the western Aleutians, Alaska. It is one of the most southerly volcanoes of the central Aleutian chain.
The volcano has a small 200 m wide and 60 m deep circular summit crater with fumaroles inside the crater and around its rims. Historical eruptions have been recorded since 1763, but not in much detail due to the remoteness of the volcano. A new eruption might have started on 18 February 2012.
No unusual activity was observed in seismic data or mostly cloudy satellite images of Kanaga volcano in the past 24 hours. ...more
The possibility remains for sudden explosions of ash to occur at any time, and ash clouds exceeding 20,000 feet above sea level may develop. If a large, explosive, ash-producing event occurs, the local seismic network, satellite ash alarms, infrasound, and volcanic lightning will help alert AVO to the new activity. (AVO activity report 27 Feb 2012) [less]
The remote Kanaga stratovolcano in the Aleutian Islands might have begun erupting, the Alaska Volcano Observatory (AVO) reports. ...more
A possible ash cloud about 39 km (24 mi) NE of the volcano, likely from weak explosive activity, was detected on satellite imagery, and volcanic tremor was detected under the volcano from 15:23-15:27 UTC (6:23 AM AKST) on 18 February, followed by numerous small events for about an hour at Kanaga Volcano. AVO has placed the volcano at Aviation Color Code YELLOW. "This new unrest indicates a possibility for sudden explosions of ash to occur at any time, and ash clouds exceeding 20,000 feet above sea level may develop. If a large, explosive, ash-producing event occurs, the local seismic network, satellite ash alarms, infrasound, and volcanic lightning will alert AVO to the new activity." [less]
