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Redoubt eruption update 23 March 2009

Posted by admin in activity reports, Alaska, eruptions, Redoubt, United States.
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Mount Redoubt in Alaska erupted at approximately 22:38 local time, 22 March 2009 (06:38 GMT 23 March 2009).

The Alaska Volcano Observatory reported that, as of 02:00 local time, four large explosions had taken place:

  • 22 March 2009 at 22:38
  • 22 March 2009 at 23:02
  • 23 March 2009 at 00:14
  • 23 March 2009 at 01:39

The AVO reported at 23:20 that the eruption cloud had reached 50000 feet above sea level (15200 metres). Radar views currently show a plume approximately 80 kilometres in length trending to the NNE. The National Weather Service has issued an ashfall advisory for the Susitna Valley, including Talkeetna, Willow and Cantwell: ‘light ashfall has already been reported at Skwentna. Light ashfall is possible throughout the Susitna Valley this morning’.

Anchorage VAAC issued an ash advisory at 08:20 GMT (00:20 local time), reporting ash to FL500 (i.e. 50000 feet). The next scheduled advisory is at 14:15 GMT (06:20 local time).

National Weather Service radar from Kenai, AK:
Above: National Weather Service radar, Kenai, Alaska: capture at 02:42 local time, 23 March 2009. Click on image for latest view.

At the time of posting (02:41 local time, 10:41 GMT) all four of the seismic traces available on the AVO website have been showing continuous intense tremor since 01:39. The eruption is very much ongoing.

Volcanic Alert Level at Redoubt is WARNING, Aviation Colour Code is RED.

For all our Redoubt coverage: Redoubt « The Volcanism Blog.

Information
Global Volcanism Program: Redoubt – summary information for Redoubt (1103-03-)
Alaska Volcano Observatory – Redoubt – AVO information and updates for Redoubt
Alaska Volcano Observatory – main page for the AVO
Anchorage VAAC advisories – volcanic ash advisories issued by Anchorage VAAC are archived here

The Volcanism Blog

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Comments

1. Eruption at Redoubt « Volcanista: a magmalicious blog - 23 March 2009

[...] RED and had four explosions recorded since last night. The Volcanism Blog has reported quite a few of the details during the night. Ashfall from the 50,000 foot plume should start this morning in affected towns [...]

2. SHIRAKAWA Akira - 23 March 2009

Another big explosion occurred at 12:30:25 UTC (14 minutes ago).

3. theroachman - 23 March 2009

http://www.avo.alaska.edu/webicorders/Redoubt/RSO_EHZ_AV.php

looks like the rso station webrecorder broke?

4. SHIRAKAWA Akira - 23 March 2009

I’m not sure it broke, this kind of error sometimes happens to other stations too on normal background seismic activity and all it takes to fix it is an instrumentation reset. Of course, given the current conditions, a hardware failure might not be impossible.

http://i40.tinypic.com/282f15c.png

5. Vulkaan Mt. Redoubt in Alaska is uitgebarstenbijAstroblogs - 23 March 2009

[...] Mount RedoubtIn de Amerikaanse staat Alaska is de beruchte vulkaan Mount Redoubt vijf keer achter elkaar uitgebarsten. De vulkaan spuwt as en stof kilometers de lucht in. De eerste en grootste eruptie was vanmorgen om 07.38 uur Nederlandse tijd. De vijf erupties duurden tussen vier en dertig minuten. De hoofdstad Anchorage van Alaska ligt op 160 kilometer van de Redoubt. Waarschijnlijk komt de stad zelf niet in de problemen door de uitbarsting, maar het vluchtverkeer wordt wel omgeleid en in ieder geval 19 vluchten zijn geannuleerd. De Redoubt is sinds januari onrustig. Geologen hielden de vuurspuwende berg sinds die tijd nauwlettend in de gaten. De afgelopen dagen nam de seismische activiteit plotseling toe en werd een vulkaanwaarschuwing afgegeven. Wie geïnteresseerd is om de activiteit van de Redoubt te volgen kan dat via Twitter doen. Bron: The Volcanism Blog. [...]

6. Top Posts « WordPress.com - 25 March 2009

[...] Redoubt eruption update Mount Redoubt in Alaska erupted at approximately 22:38 local time, 22 March 2009 (06:38 GMT 23 March 2009). The Alaska [...] [...]


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