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Avalanche Forecast

Archived

Mar 9th, 2021–Mar 10th, 2021

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

Glacier.

Expect small, loose wet avalanches on steep, sunny slopes today.

Weather Forecast

A weak ridge over the province will maintain sunny and dry conditions today in Glacier park.

Today: Sunny with cloudy periods. Alp high -7*C. FZL1300m. Calm winds.

Wed: Cloudy with sunny periods, trace snow, Alp high -8*C, light/gusting mod SW winds

Thurs: Cloudy with sunny periods, Alp high -9*C, light W winds

Snowpack Summary

N'ly aspects are holding cold, dry snow with isolated wind slabs in immediate lee areas. Meanwhile, the March sun has enough punch to quickly moisten surface snow on S'ly aspects well into the alpine, causing moist/wet conditions. This also creates a breakable crust once the sun leaves the slope.

Avalanche Summary

Several loose, wet avalanches up to sz 2 were observed from steep, solar aspects yesterday. Most avalanches were small, averaging sz 1-1.5.

Confidence

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.

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.