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Avalanche Forecast

Archived

Jan 27th, 2022–Jan 30th, 2022

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

Regions

Waterton Lakes.

Shifting winds have created variable snow amounts on top of the January crust. Ski quality changes with every few turns.

Upper Waterton lake ice is still very thin and open in some places. Watch for slippery sections on hiking trails close to town.

Weather Forecast

Fri: Clear skies, with alpine temps rising to -4. Winds increasing S-X at ridgetop FL valley bottom.

Sat: Partially cloudy with alpine temps -3. Strong ridgetop winds, FL valley bottom

Sun: Clear skies, alpine temps -4. S-X ridgetop winds, FL valley bottom

Snowpack Summary

4cm HST adding to windslabs ALP/TL. Jan 18 crust extends all aspects up to 2000m. ALP consists of hard windslab in lees and stripped to ground in scoured areas. Well settled midpack over facets above Dec 4 crust, that is beginning to break down, buried 150-200 cm. A 20-60 cm thick Nov melt freeze crust complex completes the snowpack.

Avalanche Summary

Two small natural point releases observed today from steep N facing terrain. No other naturals observed

Confidence

Due to the number of field observations

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.