Mount Redoubt Volcano - watch the webcam it could blow any time

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Ashfall & Preparedness Information

* USGS Ashfall Preparedness website
* Kenai Peninsula Borough Office of Emergency Management
* Municipality of Anchorage, Office of Emergency Management Volcanic Ash Information
* State of AK Div. of Homeland Security and Emergency Management Volcano Mitigation
* AK Department of Environmental Conservations - Division of Air Quality
* State of AK Dept. of Public Health
* Epidemiology: General Volcano Information
* Red Cross

Before an eruption
Read the hazard report for Redoubt
Read the USGS Ashfall Preparedness "Before an eruption" website

Useful Links
National Weather Service - Redoubt Coordination Page
Ted Stevens Airport Flight Status (Anchorage)
FEMA Fact Sheet: Volcanoes
FEMA Volcanoes: Are you ready?
Alaska Division of Homeland Security and Emergency Management
Send us an email

How to collect an ash sample for AVO

Please report ashfall to us by email or phone (786-7497). We'd like to know your location, time, if the fall is light or heavy, and the current weather. It would help us if you collect a sample for us. Here are instructions.

Redoubt Volcano Latest Observations
2009-01-28 07:30:17
Intermittent volcanic seismicity continues to be recorded at Redoubt.

Volcanic unrest continues at Redoubt. Seismicity currently remains above background and the possibility of an eruption exists. AVO continues to monitor the volcano 24/7.

2009-01-28 01:31:36
The status of Redoubt Volcano has not changed since the last update.

Volcanic unrest continues at Redoubt. Seismicity currently remains above background and the possibility of an eruption exists. AVO continues to monitor the volcano 24/7.

2009-01-28 00:08:12
Volcanic unrest continues at Redoubt. Seismicity currently remains above background and the possibility of an eruption exists. AVO continues to monitor the volcano 24/7

2009-01-27 21:45:55
Volcanic unrest continues at Redoubt. Seismic activity has waxed and waned throughout the day, but remains well above normal background levels. Earthquakes continue to be observed every few minutes on the most sensitive station (RSO, located near the summit.) We expect to see an increase in seismicity prior to an eruption, if one were to occur, with events being recorded on more distant stations.

2009-01-27 19:09:34
Over the past hour, AVO has received numerous phone calls wondering whether Redoubt has erupted. All indications (seismic, radar, and satellite) are that it has not. Seismic unrest continues and the possibility of an eruption exists. AVO continues to monitor the situation 24/7.

More ...
2009-01-27 18:30:24
Volcanic unrest continues at Redoubt. Seismic activity has waxed and waned throughout the day, but remains well above normal background levels. Earthquakes continue to be observed every few minutes on the most sensitive station (RSO, located near the summit. We expect to see an increase in seismicity prior to an eruption if one were to occur with, with events being recorded on more distant stations.

An AVO field crew was able to re-install a web camera at the Redoubt Hut site, located about seven miles north of the summit. The image is now dark as the sun has set. Sunrise tomorrow is around 9:30 am.

2009-01-27 16:57:07
We have just enabled the ability to post more frequent updates on the activity at Redoubt to this web page. These informal updates on the current status will be issued at irregular intervals and are intended as a supplement to our more formal information products.

Volcanic unrest continues at Redoubt. Seismic activity has waxed and waned throughout the day, but remains well above normal background levels. We expect to see an increase in seismicity prior to an eruption if it were to occur.

An AVO field crew was able to re-install a web camera at the Redoubt Hut site, located about seven miles north of the summit. This web cam is battery powered and is currently set to update at 15 minute intervals to conserve power. These settings can be modified remotely should conditions change.

Redoubt Volcano Activity NotificationsRSS Feed
ORANGE/WATCH 2009-01-27 12:48:18 - Status Report
Unrest at Redoubt Volcano continues. Seismicity has waxed and waned over the past 24 hours, but remains well above background levels.

Nothing unusual has been seen over the past 24 hours in partly cloudy satellite views. AVO conducted a gas-measurement flight yesterday afternoon, and detected elevated values of SO2 venting from the volcano's summit crater. Observers also saw new outflows of muddy debris alongside the glacier that is downslope of the summit; these were not seen the previous day (Sunday, January 25).

The current activity at Redoubt could be precursory to an eruption, perhaps within days. A further increase in seismicity is expected to accompany an eruption. Staff are currently monitoring the volcano 24 hours a day.

AVO engineers have flown by helicopter to the volcano today, to repair a web camera and install an additional seismic instrument along the Drift River valley. Yesterday, AVO's Spurr web camera was redirected towards Redoubt; this can be viewed at http://www.avo.alaska.edu/activity/Redoubt.php

AVO raised the Aviation Color Code to ORANGE and the Alert Level to WATCH at 02:09 AST (11:09 UTC) the morning of Sunday, January 25, in response to a sharp increase of seismic activity beneath the volcano. AVO had raised the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY on November 5, 2008, in response to increased emissions of volcanic gases; melting of snow and ice near the volcano’s summit; and a subtle increase in seismicity.

Complete report text

ORANGE/WATCH 2009-01-26 13:02:21 - Status Report
Unrest at Redoubt Volcano continues. Seismicity at stations closest to the volcano's summit has declined somewhat starting at about 4:00 AKT this morning, but remains well above background levels.

Nothing unusual has been seen over the past 24 hours in clear to partly cloudy satellite views. AVO conducted an overflight of the volcano yesterday afternoon, and observations confirm that an eruption has not occurred. Increased steaming through previously observed sources in the snow and ice cover were seen and sulfur gas emissions were noted. There was no significant disruption of the glacial ice, nor any apparent increased water discharge down the Drift River. A gas-measurement flight to the volcano is underway today.

The current activity at Redoubt could be precursory to an eruption, perhaps within days. A further increase in seismicity is expected to accompany an eruption. Staff are currently monitoring the volcano 24 hours a day.

Beginning at 00:58 AST (9:58 UTC) yesterday morning, nearly continuous volcanic tremor was recorded at stations near Redoubt's summit, prompting AVO to raise the Aviation Color Code to ORANGE and the Alert Level to WATCH at 02:09 AST (11:09 UTC). AVO had raised the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY on November 5, 2008, in response to increased emissions of volcanic gases; melting of snow and ice near the volcano’s summit; and a subtle increase in seismicity.

Complete report text

ORANGE/WATCH 2009-01-25 16:28:22 - Information Statement
Unrest at Redoubt Volcano continues. AVO conducted an overflight of the volcano this afternoon, and observations confirm that an eruption has not occurred. Increased steaming through previously observed sources in the snow and ice cover were seen and sulfur gas emissions were noted. There was no significant disruption of the glacial ice, nor any apparent increased water discharge down the Drift River.

Seismicity remains well above background levels. Beginning at 00:58 AST (9:58 UTC) this morning, nearly continuous volcanic tremor was recorded at stations near Redoubt's summit, prompting AVO to raise the Aviation Color Code to ORANGE and the Alert Level to WATCH at 02:09 AST (11:09 UTC). Seismicity began to decline at about 05:30 AST (14:30 UTC) this morning, but remains elevated as of this writing.

The current activity at Redoubt could be precursory to an eruption, perhaps within hours to days. A further increase in seismicity is expected to accompany an eruption. Staff are currently monitoring the volcano 24 hours a day.

AVO raised the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY on November 5, 2008, in response to increased emissions of SO2, H2S, and CO2; melting of snow and ice near the volcano’s summit; and a subtle increase in seismicity. These observations reflected a change in the volcano’s hydrothermal system, possibly associated with an influx of new magma beneath the volcano. It is also possible that the change was related to the development of a new pathway of heated fluids rising from magma intruded during the 1989-90 eruption.


Complete report text

ORANGE/WATCH 2009-01-25 11:58:48 - Status Report
Over the past 48 hours, seismic activity at Redoubt Volcano has increased markedly. Beginning at 00:58 AKT (9:58 UTC) this morning, nearly continuous volcanic tremor was recorded at stations near Redoubt's summit, prompting AVO to raise the Aviation Color Code to ORANGE and the Alert Level to WATCH at 02:09 AKT (11:09 UTC). Seismicity began to decline at about 05:30 AKT (14:30 UTC) this morning, but, as of this writing, still remains well above background levels. AVO plans to fly an observation flight of the volcano this afternoon, weather permitting.

The current activity at Redoubt could be precursory to an eruption, perhaps within hours to days. A further increase in seismicity is expected to accompany an eruption. There is no indication that the volcano is currently erupting.

At this time, clouds obscure the volcano in satellite views, but NEXRAD weather radar data show no signs eruptive activity. AVO has received no recent observer reports. Staff are currently monitoring the volcano 24 hours a day.

AVO raised the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY on November 5, 2008, in response to increased emissions of SO2, H2S, and CO2; melting of snow and ice near the volcano’s summit; and a subtle increase in seismicity. These observations reflected a change in the volcano’s hydrothermal system, possibly associated with an influx of new magma beneath the volcano. It is also possible that the change was related to the development of a new pathway of heated fluids rising from magma intruded during the 1989-90 eruption.


Complete report text

ORANGE/WATCH 2009-01-25 06:57:22 - Information Statement
Over the past 48 hours, seismic activity at Redoubt Volcano has increased markedly. This has taken the form of periodic tremor bursts that are most visible on the two seismic stations closest to the summit. Beginning at 00:58 AKT (9:58 UTC) this morning, tremor became sustained and its amplitude increased markedly. AVO raised the Aviation Color Code to ORANGE and the Alert Level to WATCH this morning at 2:09 AKT (11:09 UTC).

This activity could be precursory to an eruption, perhaps within hours to days. A further increase in seismicity is expected to accompany an eruption. There is no indication that the volcano is currently erupting.

At this time, clouds obscure the volcano in satellite views, but NEXRAD weather radar data show no signs eruptive activity. AVO has received no recent observer reports. Staff are currently monitoring the volcano 24 hours a day.

AVO raised the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY on November 5, 2008, in response to increased emissions of SO2, H2S, and CO2; melting of snow and ice near the volcano’s summit; and a subtle increase in seismicity. These observations reflected a change in the volcano’s hydrothermal system, possibly associated with an influx of new magma beneath the volcano. It is also possible that the change was related to the development of a new pathway of heated fluids rising from magma intruded during the 1989-90 eruption.


Complete report text

ORANGE/WATCH 2009-01-25 02:09:57 - VAN/VONA
Seismic activity at Redoubt volcano has increased markedly. This activity could be precursory to an eruption, perhaps within hours to days. There is no indication that the volcano is currently erupting.
Complete report text

YELLOW/ADVISORY 2009-01-24 12:46:04 - Status Report
Overall, seismic activity at Redoubt remains at low levels. A burst of increased activity beginning at 04:11 UTC (19:11 AK) may have been associated with an avalanche. Clouds obscured satellite views of the volcano today.
Complete report text

YELLOW/ADVISORY 2009-01-23 12:21:46 - Weekly Update
Seismic activity at Redoubt remains at low levels. Clouds have obscured satellite views of the volcano for the entire week. A report from a local observer indicated that no steam plume was present during a brief clear-weather window on January 20.
Complete report text

More ...
YELLOW/ADVISORY 2009-01-22 12:34:28 - Status Report
Seismic activity at Redoubt remains at low levels. Clouds obscured satellite views of the volcano today.
Complete report text

YELLOW/ADVISORY 2009-01-21 12:38:54 - Status Report
Seismic activity at Redoubt remains at low levels. Nothing unusual was observed in mostly cloudy satellite views.
Complete report text

YELLOW/ADVISORY 2009-01-20 12:09:24 - Status Report
Seismic activity at Redoubt remains at low levels. Clouds currently obscure the volcano in satellite views.
Complete report text

YELLOW/ADVISORY 2009-01-19 11:41:40 - Status Report
Seismic activity at Redoubt remains at low levels. Clouds obscured the volcano in satellite views.
Complete report text

YELLOW/ADVISORY 2009-01-18 12:30:50 - Status Report
Seismic activity at Redoubt remains at low levels. Cloudy conditions prevail today in satellite views.
Complete report text

Webcams
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Redoubt - Hut
webcam thumbnail
Redoubt - CI
Click to view larger images.
Webicorders
webicorder example
Stations available:
RDT_EHZ_AV
RSO_EHZ_AV
RDN_EHZ_AV
REF_EHZ_AV
NOAA ARL Ash Trajectory Forecasts
trajectory
trajectory
trajectory
trajectory

Click on a picture for a larger image.

These graphics depict a simulation of the direction and speed of potential ash cloud motion from Redoubt. IF a significant ash cloud were generated by the current eruption. It does not mean that such an ash cloud has been produced. These models are run every 6 hours independent of the current eruptive state of the volcano. Each colored line indicates the direction a cloud would travel at different altitudes (see key below map plot).

Here is how to convert from UTC to AKST (Alaska Standard Time):

0000 UTC= 3:00 PM AKST on the previous day as UTC
0600 UTC= 9:00 PM AKST on the previous day as UTC
1200 UTC= 3:00 AM ASKT on the same day as UTC
1800 UTC= 9:00 AM AKST on the same day as UTC

Model output by NOAA ARL, please see http://www.arl.noaa.gov/ready/traj_alaska.html for more information.
Redoubt portion of weekly Updates and periodic Information Releases.
Sunday, January 25, 2009 2:09 02:09:57 AM AKST
Seismic activity at Redoubt volcano has increased markedly. This activity could be precursory to an eruption, perhaps within hours to days. There is no indication that the volcano is currently erupting.

Friday, January 23, 2009 12:21 12:21:46 PM AKST
Seismic activity at Redoubt remains at low levels. Clouds have obscured satellite views of the volcano for the entire week. A report from a local observer indicated that no steam plume was present during a brief clear-weather window on January 20.

Friday, January 16, 2009 12:54 12:54:20 PM AKST
Seismic activity at Redoubt remains at low levels. No activity was observed in clear satellite views on Saturday, January 10. Since then, clouds have obscured visual and satellite views.

Friday, January 9, 2009 1:35 01:35:42 PM AKST
Seismic activity at Redoubt remains at low levels. Clear satellite views showed no evidence of activity all week. AVO received no reports of steaming or other activity.

Friday, January 2, 2009 1:48 01:48:39 PM AKST
Seismic activity at Redoubt has been at a low level throughout the week. Nothing unusual was observed in clear views of the volcano by satellite this week. A few minor steam plumes in the vicinity of the summit were observed earlier in the week but are not considered unusual.


December 2008 Updates
Friday, December 26, 2008 1:52 01:52:28 PM AKST
Seismic activity remained at low levels all week. Occasional clear satellite views showed nothing unusual. No reports of unusual activity were received.

Friday, December 19, 2008 12:03 12:03:58 PM AKST
Seismic activity remains at low levels. A short-lived steam cloud, rising no higher than the volcano's summit, was reported on December 16 by an observer in Kenai, 82 km (51 mi) east of the volcano. Clear satellite views on December 12-16 showed nothing unusual. Clouds have obscured views by satellite since December 16. AVO will continue to monitor the volcano closely.

Friday, December 12, 2008 9:25 09:25:41 AM AKST
Seismic activity remains at low levels. Mostly clear to partly cloudy satellite views on December 7 and 12 showed nothing unusual. AVO has received no other reports about Redoubt over the last week.

Friday, December 5, 2008 11:47 11:47:05 AM AKST
Seismic activity remains at low levels. Clouds have obscured satellite views for most of the week. No reports of unusual activity. Fieldwork scheduled for this week was delayed because of poor weather.

November 2008 Updates
Friday, November 28, 2008 12:44 12:44:30 PM AKST
Seismic activity remained at low levels throughout the week. Satellite views of the volcano were clear to partly cloudy with no activity observed.

Friday, November 21, 2008 12:07 12:07:18 PM AKST
Seismic activity this week remained at low levels. Satellite views of the volcano were clear to partly cloudy with no activity observed. Installation of additional geophysical monitoring equipment on the volcano was hampered by poor weather this week.

Friday, November 14, 2008 12:05 12:05:29 PM AKST
Seismic activity this week remained at low levels. Satellite views of the volcano were clear to partly cloudy with no activity observed. AVO staff made observations and began work to install additional geophysical equipment and a web camera on the volcano last weekend. New FLIR thermal-infrared camera images from last Friday document elevated temperatures in the areas of bare rock and disrupted ice near the summit crater and in a collapse hole within the Drift Glacier. Closer inspection of the summit fumaroles was not possible due to poor weather.

Friday, November 7, 2008 11:55 11:55:45 AM AKST
On Wednesday, November 5, 2008, AVO raised the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY owing to the several month long detection of potentially significant changes in gas emission and heat output from Redoubt Volcano. These changes are a departure from long-observed background activity. The remainder of the week seismic activity remained at low levels and satellite views of the volcano were partly cloudy with no activity observed. AVO staff began work to install additional geophysical equipment and a web camera on the volcano.

Wednesday, November 5, 2008 2:52 02:52:26 PM AKST
Over the past several months, AVO has detected potentially significant changes in gas emission and heat output from Redoubt Volcano. These changes are a departure from long-observed background activity, and therefore, AVO is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. There is no indication that an eruption is imminent or even certain. AVO is monitoring Redoubt closely and is making plans to install additional equipment on the volcano in the next several weeks.



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