|
Words by: Brent Hillier Photos by: Brent Hillier & James Dahmer In my article A Winter of Learning, I explained this years unique problem of a Persistent Weak Layer at the bottom of our snowpack which was buried at the end of November. Up until a Melt Freeze cycle and subsequent cold snap, this layer had continued to produced avalanches. On the coast we were dealing with a major snowpack instability, one we were managing by staying out of steep and rocky terrain. It's meant a winter, not only lacking in snow, but lacking in the ability to branch off into steep, challenging terrain. The crust that developed during the end of January did do the job of bridging the weak layer at the bottom of our snowpack. No avalanches have been reported on that layer since. My prediction of surface faceting did take shape, what it didn't do was completely deteriorate the melt-freeze crust. So our basal layer, although still producing results in Deep Tap Tests, is now unlikely to be skier triggered. What I did see taking shape on January 29th, as I hiked into the Keith's Hut, was some very substantial surface hoar development. Shortly after we experienced some extremely cold temperatures in the -20°C range, causing faceting. Our next avalanche problem was beginning to take shape.
Surface Hoar on the approach to the Keith's Hut on January 29, 2014
0 Comments
Words by: Brent Hillier Photos by: Brent Hillier, Norma Ibarra & Tim Gage When I first started my career in the Avalanche Industry my mandate was to use every opportunity as a learning experience. While patrolling on Mount Seymour, I would create my own avalanche bulletin the night before my shift. During my day on the mountain I would prove or disprove my predictions on what the snowpack would do and what the CAC Bulletin might say. Only after I had gathered all of my own beta and made my own stability assessments, would I review the days CAC Bulletin and critique my accuracy.  Words by: Brent Hillier Photos by: Brent Hillier, Eli Relke & James Dahmer
|
Brent HillierStories, Pictures and Video of all my adventures, on skis and bike. Archives
April 2020
Categories
All
|
RSS Feed