Tag Archives: Redoubt

On 25 March, AVO reported that a small explosion from Redoubt produced an ash plume that rose to an altitude of 4.6 km (15,000 ft) a.s.l. and drifted N to NW. Later that day AVO lowered the Volcanic Alert Level … Continue reading →

On 18 March, AVO lowered the Alert Level for Redoubt to Advisory and Aviation Color Code to Yellow because seismicity declined to levels recorded prior to the ash emission on 15 March. Seismicity remained low the next day. Shallow earthquake … Continue reading →

AVO reported that during 11-15 March seismic activity at Redoubt was low but remained above background levels. On 12, 14, and 15 March clear web camera views showed steam plumes that rose just above the summit. At about 1305 on … Continue reading →

AVO reported that during February 25-March 3 seismic activity at Redoubt was variable. On 25 February, a small mud flow originating from a melt hole in the Drift Glacier traveled several hundred meters. Satellite images revealed that the next day … Continue reading →

AVO reported that during 18-24 February seismic activity at Redoubt was variable but remained elevated above background levels. Web camera views and satellite imagery showed no unusual activity; steam plumes within the summit crater were seen on the web camera … Continue reading →

AVO reported that during 10-17 February seismic activity at Redoubt was variable but remained elevated above background levels. Web camera views were often obscured by snow, clouds, or ice on the camera housing. On 10 February, scientists noted that the … Continue reading →

AVO reported that during 4-10 February seismic activity at Redoubt fluctuated but remained elevated well above background levels. On 7 February, aerial observers reported continued steaming from an area around the 1989-90 lava dome and water discharge along the Drift … Continue reading →

On 5 November, AVO raised the Aviation Color Code for Redoubt to Yellow and the Volcano Alert Level to Advisory because of significant changes in gas emission and heat output during the previous several months. The changes were a departure … Continue reading →