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Avalanche Forecast

Archived

Dec 2nd, 2016–Dec 3rd, 2016

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Jasper.

Really going to have to curb your enthusiasm this weekend until the snowpack strengthens. Rapid ice developing on the parkway. Climbers need to carefully evaluate approach and overhead slopes and pack your avi gear.

Weather Forecast

Seasonally cold temperatures through the weekend. Winds expected to be moderate to strong, SW. Weather models really inconsistence on snowfall amounts; let's go with getting somewhere between 5 to 30cms!

Snowpack Summary

Strong relentless winds has formed touchy wind slabs 50+cm on open features at TL and above. Trump crust down 70cms at 2200m, unreactive so far.

Avalanche Summary

Field team in Parkers and Hilda area. Limited alpine observations due to poor visibility. Natural activity limited to TL observations. 2 natural slides up to sz 2.5 on N and E aspects, 2200 to 2400ms. One possible skier triggered sz 1, 2200ms in the Christmas Trees above Hilda hostel.

Confidence

Intensity of incoming weather systems is uncertain

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.