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Small explosive event at Redoubt 25 March 2009

Posted by admin in activity reports, Alaska, eruptions, Redoubt, United States.
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The Alaska Volcano Observatory reports that there was a small explosive event at Redoubt early this morning that produced an ash plume to not more than 15000 feet (4500 metres). It happened at 05:12 AKDT (13:12 GMT) and lasted about 10 minutes. The AVO Volcanic Activity Notice for this event is here.

Before this event seismicity had been generally low-level, with occasional small quakes; afterwards seismicity was elevated for a couple of hours, with low-amplitude tremor evident on the webicorder traces, but had settled back down by around 07:30. The AVO reports that ‘It is unlikely there will be any impact from this event’.

UPDATE: Another small explosion at around 10:17 Alaska time (18:17 GMT) – thanks to Boris Behncke for the tip. Quite intense tremor still ongoing at the time of posting (18:39 GMT), very visible on the RDN trace. Erik Klemetti has just put up a very informative post on Redoubt at Eruptions, saying it’s likely we’ll be seeing a lot more of this kind of thing in the weeks and months to come. [N.B. I won’t be able to post any more tonight – perhaps it’s just as well, WordPress seems to be broken and everything is taking ten times longer than it should. I’ll catch up with things tomorrow.]

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

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

The Volcanism Blog



1. Boris Behncke - 25 March 2009

looks like there’s another explosive event right now (18.20 GMT) … seems about the same size or even a bit smaller than the previous one, from looking at the seismic data

2. volcanism - 25 March 2009

Quick note: AVO lowered Redoubt alert status to Watch and aviation colour code to Orange at 21:35 GMT. Just added a post about it (using a borrowed computer, so I hope it comes out alright).

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