The flow descends from Sherman Peak down Boulder Glacier. It is considerably smaller than earlier documented flows. Click to enlarge any image, click again to magnify.
John Scurlock flew over Mount Baker’s Boulder Glacier Tuesday, October 29 and got some great daylight photos of the snow/ice/rock debris flow that occurred October 21. The flow didn’t travel as far as ones documented in 2010, 2006 and earlier. John speculates that much of the volume of the October 21 event was swallowed by wide-open, late season crevasses.
Yesterday’ s post on these periodic
A wall of ice and rock around 30 m high blocks the east breach of Sherman Crater. It does not fill the ice pit melted by a large fumarole (in shadow at top).
slides included the seismic record and a hazards discussion. To learn more about Boulder Glacier debris flows, including photos of past events and a link to a research paper, see this page on the MBVRC blog.
John posted a few more photos on his photography website:
Mount Baker Volcano Research Center subscription website 
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