As part of a recent Apprentice Ski Guide Exam two groups traveled up to the Wapta Icefields from March 28-30. One group approached from Bow Canyon and the other from Peyto; each completed a short traverse and descended the opposite approach. Trips were also completed to the Wildcat Glacier via Baker / Trapper Col, Little Crowfoot, Rhonda South, and the Baker / Habel Col.
We encountered good travel conditions due to cool temperatures, low ski penetration and reasonably good snow coverage. Temperatures remained below freezing in Alpine but TL and BTL were starting to see affects of spring warmth. In spite of the wind, good skiing is still found in sheltered areas.
The approach to Bow Hut is in good condition with the creek mostly covered – although there remains considerable overhead hazard from snow slopes and cornices collapsing. The Peyto approach is also in good condition and requires the normal amount of boot packing in the moraines.
Seasonal strong winds have created variable snow depths in the region. This recent storm brought moderate to strong S and SW winds. We encountered less recent soft wind slab than anticipated other than in isolated pockets. Snow depths varied from over 3meters on most glaciers to bare ice on steepest part of the Upper Peyto Glacier. Snow from previous storm appeared to be 10-15 cm in alpine but was closer to 20-30cm in more sheltered areas below tree line.
Surface hoar was observed down 70cm on a 2100m W facing moraine feature nearby to the Mistaya Lodge. Snow tests showed some reactivity to snow tests although we saw no recent natural or skier activity on this layer.
We had limited visibility during the trip, however we only observed 1 new natural avalanche in our travels. We avoided traveling on shallow snowpack areas out of concern for triggering persistent deeper instabilities. We were also cautious traveling in areas that might have had wind slabs. Cornices remain a serious overhead hazard with their potential to create debris and trigger larger slabs. While a few have fallen, there are many more that lurk overhead.
If the weather improves and sun comes out we anticipate to see an increase in activity on solar aspects and cornice failures.
It was a great week skiing with friends.
Cecelia Mortenson
ACMG Assistant Alpine and Rock Guide
CAA L2 Avalanche
via
Peter Tucker
Executive Director
B: +1.403.949.3587
M: +1.403.689.4324
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