Sunday, July 30, 2006

Large outburst from Mt St Helens

Despite the cloud cover of the last few days, there was a large and bright outburst from the crater last night just after midnight. The event didn't correspond to any seismic event (see for e.g. Yellow Rock seismic recorder) and it was so large as to briefly illuminate the entire crater.
The stacked image above shows all of the frames from last night combined onto a single image (and superimposed on an image of the mountain to provide reference). The full animation of the event is posted on


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