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Avalanche Forecast

Archived

Feb 4th, 2021–Feb 7th, 2021

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.

Soft snow can still be found in sheltered areas at and below treeline. Frigid temperatures on the weekend will be one of the main hazards for backcountry travelers.

Weather Forecast

Friday: Cloudy with sunny periods & isolated flurries. Moderate NW wind with strong gusts. Freezing level 1200m.

Saturday: Flurries with 5-10cm of snow. -20 to -10 in the townsite with a slight inversion at cameron lake. Light wind with moderate gusts at ridgetop.

Sunday: Cloudy with sunny periods & isolated flurries. Really, really cold temperatures

Snowpack Summary

Southwest wind has redistributed recent snowfall scouring westerly alpine start zones and creating wind slab on lee and cross loaded slopes. Fresh wind slab sits on a firm crust below 1900m. The mid snowpack is well consolidated at Cameron Lake but the snowpack becomes shallow and faceted in areas east of the divide.

Avalanche Summary

No recent avalanches observed. Please post a MIN if you see anything!

Confidence

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.

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.