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Avalanche Forecast

Archived

Nov 5th, 2019–Nov 6th, 2019

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

Regions

Kananaskis.

Possibly more snow on the east side of the region due to the up-slope storm. There is definitely now enough snow to be concerned with from an avalanche perspective. Winter is here!

Confidence

Low -

Weather Forecast

Another 5 to 10cm of snow is possible before this storm blows out. A return to milder temperatures is expected for the rest of the week. Winds have been light to moderate during the storm with some wind from the NE.

Avalanche Summary

Isolated loose dry avalanches up to size 1.5 in steep Alpine terrain on N and E aspects have occurred in the past 48 hours.

Snowpack Summary

Up to 10cm of drier snow today fell on 10 to 20cm of generally heavy, wet snow yesterday. Wind loading is evident in lee and cross-loaded terrain in the Alpine and upper Treeline elevations. Minor reverse wind-loading is possible due to the recent NE winds. The early season crust is located approximately 10cm above the ground and is reported to be supportive to skiers weight in some locations. Basal facets exist below the crust.

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.