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Thread: Mount Redoubt Volcano

  1. #1
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    Mount Redoubt Volcano

    Link to AVO

    2009-01-26 13:02:21 - Status Report

    Snip from report:

    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.
    Last edited by jlhredshift; 2009-Jan-27 at 03:35 PM. Reason: clean up

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    Quote Originally Posted by jlhredshift View Post
    Link to AVO

    2009-01-26 13:02:21 - Status Report

    Snip from report:
    Been watching this one! So far has all the precursor signatures present that might signal an eruption.

    Seismic activity has been slowing down a little bit yesterday/today, so it mightbe building up backpressure at this point.

  3. #3
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    Quote Originally Posted by dgavin View Post
    Been watching this one! So far has all the precursor signatures present that might signal an eruption.

    Seismic activity has been slowing down a little bit yesterday/today, so it mightbe building up backpressure at this point.
    Live web cam of Redoubt

    Wow, clouds moved in.

  4. #4
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    Wow, looks like a rather serious Harmonic tremor at Redoubt about three hours ago. If it keeps this up may need its own thread here.
    Attached Images Attached Images

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    That siesmograph reading was more then just a simple harmoinc tremor. Status report today from USGS mentioned a huge mud slide, and a new collapse hole in the Redoubt sumit's caldera.

    Which would explain the intesity of the reading, as it was recording the mudslide happing on the surface.

    *Edit to add*

    My guess for a probability of eruption in next 3 weeks, is 70%

    Mods? Should the posts be slipt off into a Redoubt Volcano thread?

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    Quote Originally Posted by dgavin View Post
    Mods? Should the posts be slipt off into a Redoubt Volcano thread?
    I went ahead and split off the posts into a new thread. A couple of posts that touched on several topics: Redoubt, Yellowstone, earthquakes, etc., I left in the Earthquake thread
    Last edited by Swift; 2009-Jan-29 at 05:56 PM. Reason: Additional moderation info
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    CNN.com has picked up the story about Redoubt
    volcano in south-central Alaska could erupt within days or weeks, authorities said.

    "The level of seismic activity" has "increased markedly" in recent days at Mount Redoubt, a 10,197-foot peak about 100 miles southwest of Anchorage, the state's most populous city, according to the Alaska Volcano Observatory.

    "We don't have a crystal ball," said Peter Cervelli, a research geophysicist with the observatory. But "we expect based on the past behavior of this volcano that this activity is going to culminate in an eruption."
    At night the stars put on a show for free (Carole King)

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  8. #8
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    Bah. No good views on either cam.

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    USGS AVO site is down due to too much traffic at thier website. they also lost one of the older siemographs, and the new one is not totaly online yet.

    Information statement for today:

    Alaska Volcano Observatory
    Information Statement
    Friday, January 30, 2009 7:16 AM AKST (1616 UTC)


    Redoubt Volcano
    6029'7" N 15244'38" W, Summit Elevation 10197 ft (3108 m)
    Current Volcano Alert Level: WATCH
    Current Aviation Color Code: ORANGE

    Unrest at Redoubt Volcano continues, though no eruption has yet occurred. Seismicity levels have risen within the last 8 hours. Redoubt remains at Aviation Color Code ORANGE and Volcano Alert Level WATCH.

    AVO's website has been overwhelmed with traffic this morning because of extensive national news coverage. A backup, low-bandwidth webserver is operating with limited information.

    Staff are currently monitoring the volcano 24 hours a day. We will issue further information as it becomes available.
    Increasing probability of eruption in next 3 weeks, to 82%

  10. #10
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    Large Earthquake ongoing now at Redoubt on it's siesmograph data feeds. No magnitude information for it yet (my viewer doesn't have the calulation stuff to it).

    It' not even on the USA EQ center maps yet.

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    Quote Originally Posted by Swift View Post
    I went ahead and split off the posts into a new thread. A couple of posts that touched on several topics: Redoubt, Yellowstone, earthquakes, etc., I left in the Earthquake thread
    Nicely done, Swift.

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    I all of a sudden want to go to Alaska.

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    Death wish?

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    I just really like volcanoes.

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    Quote Originally Posted by geonuc View Post
    I just really like volcanoes.
    Hey, no . I really like volcanoes too. I'd love to go watch.
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    Here's a photo I took in Alaska back in June 2002. I think Redoubt is the mountain in the background.


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    USGS Twitter Brief

    2009-01-30 14:35:54 (Alaskan Time)
    Intense seismicity continues at Redoubt this afternoon. Clear webcam views, satellite, and radar data from earlier today indicate that the volcano has not yet erupted.

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    Quote Originally Posted by geonuc View Post
    I just really like volcanoes.
    Me too. If I could do it over again, it would be volcanology for me!

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    Another update from USGS just arrived.

    2009-01-30 16:56:54
    Seismicity has declined greatly over the past 90 minutes, although activity is still well above normal background levels.

    Clouds continue to obscure the webcam view, and the sun will be setting soon. AVO continues to observe potential activity with satellite and radar data.

    An AVO observation flight this afternoon reported no sign of ash emission, but observed significant steaming from a new melt depression at the mouth of the summit crater near the vent area of the 1989-90 eruption.
    Increasing my guess on probability of eruption in next 3 weeks, to 90%. Proability in next 48 hours...25%

    *edit to add*

    I may not be too far off on my guesses here. USGS/AVO has announced that staff will be monitoring Redoubt 24/7.
    Last edited by dgavin; 2009-Jan-31 at 04:06 AM.

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    Quote Originally Posted by Amber Robot View Post
    Here's a photo I took in Alaska back in June 2002. I think Redoubt is the mountain in the background.
    Nice. You probably have some good shots of Augustine as well, I suspect.

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    Has anyone heard what scale of eruption is anticipated? VE-?

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    Redoubt is basicaly continually active, with long periods of quietness (10 to 30 years) between outbursts.

    I have not heard any official expectation of the expected VE. My guess would be around a 3-4. Basically an ash eruption, and less then St. Helens in force.

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    A cool pic from Redoubt's new web cam.
    Attached Images Attached Images

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    Redoubt sent up a steam plume reaching 10,000ft height today. It's settled down alread, but a small plume remains in the webcam view (Redoubt HUT camera).

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    Quote Originally Posted by geonuc View Post
    I just really like volcanoes.
    Then why the frown? Smile!

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    Here are the latest images of Mt. Redoubt.
    We know time flies, we just can't see its wings.

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    And here's the latest from the AVO
    2009-02-01 18:11:00
    Seismic unrest continues at Redoubt. Seismic activity is still well above normal background levels and is holding steady. The volcano has not erupted.
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  28. #28
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    And more Latest from AVO

    2009-02-02 11:02:09

    Elevated seismic activity continues and we have been detecting small repeating earthquakes over the past several hours.

    The volcano has not erupted and is still in a very restless state.

    AVO continues to observe potential activity with seismic, satellite web camera and radar data.

    The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH.

  29. #29
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    From the AVO
    2009-02-03 08:08:19

    Redoubt Volcano continues to be restless. Seismic activity continues at an elevated level and is well above background levels. The volcano has not erupted.

    A gas/observation overflight yesterday reported continued changes in the summit glaciers indicative of heating of the summit area. Photos from both the overflight and the hut webcam showed a small vapor plume at the summit. The web camera is now dark as our long winter night continues.
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  30. #30
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    Current status:

    2009-02-05 04:05:11

    Unrest continues at Redoubt Volcano. Seismic activity is at an elevated but relatively stable level.

    The volcano has not erupted.

    The web camera is currently dark.
    So my question is, is the current seismic activity magma, subduction, or isostatic related activity?

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