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Avalanche Forecast

Archived

Feb 10th, 2021–Feb 11th, 2021

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.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Glacier.

Throw some extra warm clothes into your pack and bring a hot drink, or two, with you this week. If you run into trouble in minus 20's, you will be SOOOO happy to have this extra warmth!

Weather Forecast

Continuing cold with no snow.

Today: Mix of sun/cloud, Alp high -22*C, light winds

Thurs: Sunny with cloudy periods, Alp high -25*C, light NE winds

Fri: Sunny with cloudy periods, Alp high -19*C, light NE winds

Snowpack Summary

Storm snow from last week was redistributed by strong S'ly, then NW'ly, winds. These wind slabs are beginning to facet and weaken, but are still popping out on unsupported features at higher elevations. Loose, dry sluffs are traveling fast and far in steep alpine gullies. Cornices are rotting at their bases due to the cold temps and may be fragile.

Avalanche Summary

A skier-triggered sz 2 windslab on Bagheera was reported yesterday.

Several MIN reports from Monday highlighted skier-triggered sz 1.5 slabs from steep, unsupported alpine features (Christmas Couloir, Nikki's Notch, Avalanche Crest).

Loose, dry sluffs to sz 1 were observed in several N-facing Macdonald gullies yesterday.

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.