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Avalanche Forecast

Archived

Mar 3rd, 2022–Mar 6th, 2022

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

Regions

Waterton Lakes.

Akamina Parkway has reopened.

Though natural avalanche activity has tapered with cooling temps allow snowpack time to adjust to significant new load.

20 cm of light unconsolidated surface snow has improved ski quality but be vigilant with sluffing.

Weather Forecast

Tonight: Flurries, accumulating to 5cm. Light wind. Alpine temps -7.

Fri: Cloudy with isolated flurries. Light NE winds. Alpine temps high -6. Freezing levels valley bottom.

Sat: Mix of sun and cloud. Light NE wind. Alpine temps high -9. Freezing levels VB.

Sun: Sunny with cloudy periods. Moderate SW winds. Alpine high -9, Low -13. Freezing levels VB.

Snowpack Summary

Over 70cm of snow and mod SW winds formed storm slabs up to 100cm in ALP. BTL the storm rained to 2000m before temps cooled bringing 15-20cm snow. This overlies old windslab 10-30 cm deep. Feb 15 crust is 1 cm thick and exists to tree line all aspects and higher on solar aspects. Well settled midpack. Facets above Dec 4 crust, buried 150-200 cm.

Avalanche Summary

Evidence of a widespread natural cycle from last 24-72 hrs with storm slab, wet slab and wet loose avalanches to size 3 can be seen around the park. Numerous avalanches reaching valley bottom. Thanks for the great observations on the Mountain Information Network, we love seeing your adventures.

Confidence

Due to the number of field observations

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.