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Avalanche Forecast

Archived

Apr 14th, 2022–Apr 17th, 2022

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, 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.

Winter is still here!

The best skiing this week has been found on low angle slopes where snow has not been affected by the sun.

Hazard will increase with solar input during clear periods.

Have a great holiday weekend!

Weather Forecast

Fri: Scattered flurries clearing in the afternoon. ALP high -8. Moderate winds switching from E to W midday. Freezing levels valley bottom.

Sat: Clear with scattered flurries, accumulating to 5 cm. ALP high -6. E Winds increasing throughout the day to strong. FL VB.

Sun: Cloudy with scattered flurries. ALP high of -4. Moderate W winds. FL 1500m.

Snowpack Summary

25 cm of four finger snow overlies refrozen surfaces on all  aspects well into ALP. A near surface breakable crust exists on steep solar aspects. A series of crusts and windslab make up the midpack. Lower snowpack is well settled P - K. HS 250-300 cm near the continental divide.

Avalanche Summary

Few loose dry avalanches to size 1 with solar input. Please report any observations to the Mountain Information Network we really appreciate the information as neighboring operations are shutting down for the season.

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.

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.