Printer friendly version
Intermittent, low-level eruptive activity continues at Kanaga Volcano in the Central Aleutians. Yesterday, pilots and ground observers reported a vigorous steam plume containing minor ash extending above the volcano to an estimated 10,000 feet (3050 m) ASL. Local winds carried the plume north to northeast from Kanaga and light ashfall occurred on the flanks of the volcano. Satellitel images detected a warm spot located at Kanaga as well as a faint plume headed north, consistent with pilot reports.
Eruptive activity at Kanaga has been ongoing since late December, 1993; in general, the activity is characterized by occasional eruptions of dilute ash, volcanic gas and steam plumes that have risen to a maximum of about 10,000 feet (3050 m) ASL. Based on what is known about the recent eruptive history at Kanaga, this type of mild but persistent emission of small plumes could continue for many months. The most significant historic eruption of Kanaga, in 1906, produced a series of lava flows down the volcano's flanks; while lava effusion has not yet occurred during the current eruption of Kanaga, it remains a possibility.
The community of Adak 20 miles (33 km) east of the volcano has reported no significant ashfall throughout this period. AVO maintains no seismometers on Kanaga. The AVO monitoring effort consists of satellite surveillance and collection of pilot and ground observer reports.
Poor weather obscured Veniaminof Volcano during the past week.
COOK INLET VOLCANOES
Seismicity at Spurr, Augustine, Redoubt and Iliamna
volcanoes remains at normal levels.
The Alaska Volcano Observatory continues to monitor Spurr,
Augustine, Redoubt and Iliamna closely. We maintain a
computerized alarm system that is capable of notifying AVO
seismologists during nonbusiness hours should unusual
seismic activity occur.