Mt. Redoubt Volcano

Mt. Redoubt Volcano - Current Update


Mt. Redoubt Volcano Statistics

  • Redoubt Current: Alert Level NORMAL
  • Redoubt Current: Color Code GREEN
  • Type:  Stratovolcano
  • Seismically Monitored:  Yes
  • Distance:  103 mi (166 km) from Anchorage
  • Elevation:  10197 ft (3108 m)
  • Latitude:  60.4852° N
  • Longitude:  152.7438° W
  • Quadrangle:  Kenai
  • Most Recent Activity:  March 15, 2009
  • CAVW Number:  1103-03-

Mt.Redoubt Volcano Location

Redoubt Volcano Location

Description

From Miller et al (1998): "Redoubt Volcano is a steep-sided cone about 10 km in diameter at its base and with a volume of 30-35 cubic kilometers. The volcano is composed of intercalated pyroclastic deposits and lava flows and rests on Mesozoic granitic rocks of the Alaska-Aleutian Range batholith (Till and others, 1993; 1994). It has been moderately dissected by the action of numerous alpine glaciers. A 1.8-km-wide, ice-filled summit crater is breached on the north side by a northward-flowing glacier, informally known as the Drift Glacier, which spreads into a piedmont lobe in the upper Drift River Valley. The most recently active vent is located on the north side of the crater at the head of the Drift glacier. Holocene lahar deposits in the Crescent River and Drift River valleys extend downstream as far as Cook Inlet."



ALASKA VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Wednesday, June 7, 2023, 12:11 PM AKDT (Wednesday, June 7, 2023, 20:11 UTC)


GREAT SITKIN (VNUM #311120)
52°4'35" N 176°6'39" W, Summit Elevation 5709 ft (1740 m)
Current Volcano Alert Level: WATCH
Current Aviation Color code: ORANGE

Slow eruption of lava is continuing at Great Sitkin Volcano, producing a thick lava flow within the summit crater.  No activity was observed in cloudy satellite and webcam views during the past day.   Seismicity remained low. 

An eruption of lava began at Great Sitkin Volcano in July 2021 and has continued to slowly erupt since, but no explosive events have occurred. An explosive event occurred in May 2021, before the current eruption of lava. The volcano is monitored by local seismic and infrasound sensors, satellite data, webcams, and regional infrasound and lightning networks.



ANIAKCHAK (VNUM #312090)
56°54'21" N 158°12'32" W, Summit Elevation 4400 ft (1341 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color code: YELLOW

No earthquakes were observed at Aniakchak over the past day. No activity was observed in cloudy satellite and webcam images.

The current period of seismic unrest began in October 2022. Increases in seismic activity have been detected previously at other similar volcanoes, with no subsequent eruptions. We expect additional shallow seismicity and other signs of unrest, such as gas emissions, elevated surface temperatures, and additional surface deformation to precede any future eruption, if one were to occur.

AVO monitors Aniakchak with a local network, which currently consists of one functional local seismometer and several regional seismometers, as well as satellite remote sensing data and regional infrasound and lightning networks.



SEMISOPOCHNOI (VNUM #311060)
51°55'44" N 179°35'52" E, Summit Elevation 2625 ft (800 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color code: YELLOW

There was no evidence of explosive activity in the geophysics data over the past day. Seismicity remains low. No unusual activity was observed in cloudy satellite views and webcam views.

Small eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Young and ash clouds usually under 10,000 ft (3 km) above sea level have characterized recent periods of eruption since 2018. Additional ash-producing events could occur again with little warning. 

Semisopochnoi volcano is monitored by local seismic and infrasound sensors, satellite data, webcams, and regional infrasound and lightning networks.



TAKAWANGHA (VNUM #311090)
51°52'1" N 178°1'37" W, Summit Elevation 4754 ft (1449 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color code: YELLOW

Small earthquakes were observed over the past day. No activity was observed in cloudy satellite views. 

Increases in seismic activity have been detected previously at Takawangha volcano and other similar volcanoes, with no subsequent eruptions. We expect additional shallow seismicity and possibly other signs of unrest, such as gas emissions, elevated surface temperatures, and additional surface deformation to precede any future eruption, if one were to occur.   

Takawangha volcano and Tanaga Volcano are monitored with a local seismic and infrasound network, regional infrasound and lightning detection networks, and satellite data. Tanaga Volcano is about 5 miles (8 km) west of Takawangha volcano on Tanaga Island.



TANAGA (VNUM #311080)
51°53'2" N 178°8'35" W, Summit Elevation 5925 ft (1806 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color code: YELLOW

Small earthquakes were observed over the past day. No activity was observed in cloudy satellite views.

Increases in seismic activity have been detected previously at Tanaga Volcano and other similar volcanoes, with no subsequent eruptions. We expect additional shallow seismicity and possibly other signs of unrest, such as gas emissions, elevated surface temperatures, and additional surface deformation to precede any future eruption, if one were to occur.   

Tanaga Volcano and Takawangha volcano are monitored with a local seismic and infrasound network, regional infrasound and lightning detection networks, and satellite data. Takawangha volcano is about 5 miles (8 km) east of Tanaga Volcano on Tanaga Island.



TRIDENT (VNUM #312160)
58°14'3" N 155°6'9" W, Summit Elevation 3599 ft (1097 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color code: YELLOW

Earthquake activity remains elevated at Trident Volcano. No other activity was observed in cloudy satellite data and webcam images.

The current period of seismic unrest began on August 24, 2022. Increases in seismic activity have been detected previously at Trident Volcano and other similar volcanoes, with no subsequent eruptions. We expect additional shallow seismicity and other signs of unrest, such as gas emissions, elevated surface temperatures, and surface deformation, to precede any future eruption if one were to occur. 

AVO monitors Trident Volcano with a local network of seismometers, a webcam, remote sensing data, and regional infrasound and lightning networks.





Source: Alaska Volcano Observatory



Mount Redoubt Volcano Cam


This is a static image of Mount Redoubt, The VolcanoCam image automatically updates approximately every two hours.
Volcano image courtesy of ...
Live webcam images of various Alaskan volcanoes
Alaska Volcano Observatory Webcam - Redoubt - DFR

Images of Mount Redoubt
Gallery 1 Gallery 2
Ascending eruption cloud from Redoubt Volcano as viewed to the west from the Kenai Peninsula. The mushroom-shaped plume rose from avalanches of hot debris (pyroclastic flows) that cascaded down the north flank of the volcano. A smaller, white steam plume rises from the summit crater. Photograph by R. Clucas, April 21, 1990.

Picture Date: April 21, 1990
Image Creator: Clucas, R.;
Image courtesy of AVO/USGS.
Ryan Bierma, AVO geologist, stands next to the AVO Redoubt Hut, 7.5 miles north-northwest of Redoubt's summit. Ryan was completing the installing of the Redoubt Hut webcam.

Picture Date: January 27, 2009
Image Creator: Read, Cyrus;
Image courtesy of AVO/USGS.
Photograph of Redoubt volcano steaming at sunset, taken from the Deep Creek boat launch on the Kenai Peninsula, by Dennis Josefczyk.

Picture Date: May 26, 2009 22:30:00 ADT
Image Creator: Josefczyk, Dennis;
Image courtesy of AVO/USGS.
Top vent in the Redoubt summit crater.

Picture Date: March 21, 2009
Image Creator: Read, Cyrus;
Image courtesy of AVO/USGS.
Ash cloud from Redoubt Volcano, December 16, 1989. View is to the southwest. Figure from: Waythomas, C. F., Dorava, J. M., Miller, T. P., Neal, C. A., and McGimsey, R. G., 1998, Preliminary volcano-hazard assessment for Redoubt Volcano, Alaska: U.S. Geological Survey Open-File Report OF 98-0857, 40 p.

Picture Date: December 16, 1989
Image Creator: Twitchell, Hollis;
Image courtesy of AVO/USGS.
Approximate extent of pyroclastic surge deposits (dashed line) on Ptarmigan Ridge (unofficial name) north of Redoubt Volcano. Arrows indicate flow path down Drift Glacier and up Pitarmigan Ridge. Figure from: Waythomas, C. F., Dorava, J. M., Miller, T. P., Neal, C. A., and McGimsey, R. G., 1998, Preliminary volcano-hazard assessment for Redoubt Volcano, Alaska: U.S. Geological Survey Open-File Report OF 98-0857, 40 p.

Picture Date: February 15, 1990
Image Creator: Gardner, Cynthia; US Geological Survey;
Image courtesy of AVO/USGS.
Drift Glacier area. Figure from: Waythomas, C. F., Dorava, J. M., Miller, T. P., Neal, C. A., and McGimsey, R. G., 1998, Preliminary volcano-hazard assessment for Redoubt Volcano, Alaska: U.S. Geological Survey Open-File Report OF 98-0857, 40 p.

Picture Date: August 30, 1984
Image Creator: Post, Austin; US Geological Survey;
Image courtesy of AVO/USGS.
Area likely to be affected by volcanic ash fallout from eruptions similar to the 1989-90 eruption of Redoubt Volcano. Figure from: Waythomas, C. F., Dorava, J. M., Miller, T. P., Neal, C. A., and McGimsey, R. G., 1998, Preliminary volcano-hazard assessment for Redoubt Volcano, Alaska: U.S. Geological Survey Open-File Report OF 98-0857, 40 p.

Picture Date: 1998
Image Creator: Waythomas, Christopher; Dorava, Joseph; Miller, Thomas; Neal, Christina; McGimsey, Robert;
Image courtesy of AVO/USGS.

Augustine volcano (VNUM #313010)
59.3626° N 153.435° W, Summit Elevation 4134 ft (1260 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Augustine - island webcam
webcam image



Information courtesy of ...
U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.
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