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Avalanche Forecast

Archived

Feb 3rd, 2022–Feb 6th, 2022

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

Waterton Lakes.

Batten down the hatches, fridays extreme winds will continue to add to existing windslabs in lees.

Ski conditions are still variable with some areas scoured down to the January crust.

Weather Forecast

Friday: Cloudy with flurries, accumulating 5-10 cm. Alpine temps high -5, with extreme SW winds. FL valley bottom

Saturday: Cloudy with flurries in the morning, trace amounts precip. Alpine temps, high -5. FL valley bottom with strong SW winds.

Sunday: Partially cloudy. Alpine high -3. Moderate to strong SW winds. FL valley bottom.

Snowpack Summary

S-X westerly wind has built 20- 70 cm windslabs in lees. This overlies Jan 18 crust extending all aspects up to 2000m, and higher on solar aspects. Well settled midpack, with facets above Dec 4 crust, buried 150-200 cm, above Nov layers.

Avalanche Summary

No new avalanches reported in the park this week, however visibility was poor. Please post any avalanche observations on the Mountain Information Network, we really appreciate any observations.

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.