Redoubt Eruption Sequence

February 13, 2010


Photographer: Alaska Volcano Observatory/Bill Burton
Summary Author: Bill Burton

Redoubt Volcano in Alaska erupted in 2009 following a 20-year period of dormancy. This series of photos was taken from a fixed-wing aircraft on March 15, 2009. It shows the first known ash emission, lasting about 15 minutes, of the 2009 eruption cycle. The volcano erupted violently one week later, producing 19 explosions from March 22 through April 4. These convulsions sent ash across Anchorage and the Kenai Peninsula. Following this explosive period, a dome was extruded at the summit that now measures hundreds of meters across. A year later, Redoubt appears to have returned to quiescence. Redoubt Volcano is located west of Cook Inlet, Alaska.