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Avalanche Forecast

Archived

Nov 7th, 2022–Nov 12th, 2022

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

Regions

Lake Louise.

Early season conditions are present with a thin snowpack, lots of variability in snow depth, and plenty of lurking hazards to hit. Some good travel and turns can be found, but options are limited. Travel with care.

Confidence

Low

Avalanche Summary

A few small wind slabs up to size 1.5 reported by the local ski hills during avalanche control with explosives and ski cutting. No new natural avalanches observed.

Snowpack Summary

A couple cm's of new snow on Monday with increasing N and E winds. Light wind transport in the alpine. Small wind slabs are present in the alpine on multiple aspects as a result of the variable winds in the past couple of days. 50-80 cm of total snow at treeline throughout the region, with up to 120 cm in loaded alpine features. Below treeline is generally below the threshold for avalanches.

Weather Summary

Cold, clear weather is starting with the arrival of an arctic ridge of high pressure. Winds should drop down into the light range for Tuesday and remain there. Temperatures are starting off quite cold (-20 to -25°C) but are forecast to slowly increase towards the end of the week.

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.