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Home » Volcanoes » Redoubt Volcano, Alaska

Signs of Activity at Mount Redoubt, Alaska

AVO/USGS pictures of non-eruptive activity from January and February, 2009

Redoubt Volcano - meltwater from the summit glacier
Oblique aerial photo of a muddy meltwater stream and waterfall produced by melting of Redoubt's summit glacier by hot rock below. Photograph by Kristi Wallace, AVO/USGS, February 2, 2009.

Redoubt Volcano- non-eruptive features
Oblique photo of the north flank of Redoubt Volcano showing recent fumarole activity. The vigorous steam and gas plume is coming from a large fumarole that developed between January 28 and January 30, 2009. Photograph by Kristi Wallace, AVO/USGS, January 30, 2009.

Redoubt Volcano seismogram
Helicorder image from January 23 through February 2, 2009 for Redoubt station RSO EHZ. Image created by Heather Bleick, AVO/USGS, February 2, 2009. Enlarge image

Redoubt Volcano - fumaroles, ice collapse, exposed rock
Oblique photo of the north flank of Redoubt Volcano showing fumarolic activity, exposed rock, holes in the ice and ice collapse features, all of which are signs of hot rock below. Photograph by Kristi Wallace, AVO/USGS, January 30, 2009.

Redoubt Volcano - fumarole close-up photo
Oblique photo showing a close-up view of two fumarole vents from the photo above. Photograph by Kristi Wallace, AVO/USGS, January 31, 2009.

Redoubt Volcano, Alaska
Heat from activity below melts the snow and ice cover on Mount Redoubt to produce these flows of muddy water. Photograph by Cyrus Read, AVO/USGS, January 27,2009.

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Redoubt's last volcanic eruption was in 1989 and 1990. See our "Redoubt Volcano - Eruption Pictures" for a visual summary of the eruption. We also have a general article on Redoubt Volcano that describes its location, plate tectonic environment, geology, eruptive history and other information.

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