Mt. Redoubt, a prominent stratovolcano in south-central Alaska, is characterised by its steep, glacier-clad slopes. This volcano, built by layers of lava and volcanic debris, poses a significant hazard due to its explosive eruptions and the potential for lahars (volcanic mudflows) generated by the interaction of hot volcanic material with ice and snow. Past eruptions have produced ash plumes that disrupted air travel and deposited ash over wide areas.
| Location: | Alaska, United States |
| Coordinates: | 60.488056, -152.756141 |
| Volcano Type: | Stratovolcano |
Mt. Redoubt’s Location
Mt. Redoubt’s Latest Status
2024: Current Volcano Alert Level: NORMAL (low level activity) Current Aviation Color Code: GREEN
Mt. Redoubt’s Eruptive History
| Year(s) | Eruptive Activity |
|---|---|
| ~890,000 years ago – present | Geological evidence suggests Redoubt has been active for at least this long, with periods of cone building and collapse. |
| 1881 | Possible eruption reported, but details are uncertain. |
| 1902 | First well-documented eruption. Explosive activity with ashfall reported up to 180 km away. |
| 1933 | Possible minor eruption with limited information available. |
| 1966-68 | Significant eruption with ashfall, lahars, and pyroclastic flows. Caused disruption to air travel. |
| 1989-90 | Major eruption lasting over 6 months. Produced large ash plumes that reached heights of 14 km, disrupting international air travel (including the near-crash of KLM Flight 867). Lahars caused damage to an oil terminal in Cook Inlet. |
| 2009 | Eruption lasting several months. Multiple explosive events generated ash plumes up to 17 km high, impacting air traffic and communities downwind. Lahars were also observed. |
Mt. Redoubt Monitoring
For monitoring of United States Volcanoes, please refer to USGS.
Mt. Redoubt Images
