An ash plume from the pyroclastic flow descending the N flank of Redoubt volcano on 21 April 1990. The ash plumes produced during the 1989-1990 eruption damaged five commercial jet liners, with an incident on 15 December 1989 causing a Boeing 747-400 aircraft to temporarily lose power of all four engines.

Photo by Joyce Warren, 1990 (courtesy of U.S. Geological Survey).

This image is made available as a Public Domain Work, but proper attribution is appreciated.

Galleries: Ash Plumes and Ashfall

Keywords: ash plume | explosive eruption | pyroclastic flow | umbrella cloud | ash | eruption | pyroclastic density current (PDC) | co-ignimbrite plume

Redoubt