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Avalanche Forecast

Archived

Jan 6th, 2025–Jan 10th, 2025

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

Regions

Waterton Lakes, Waterton.

Good skiing may still exist in sheltered areas near Cameron Lake. The wind is expected to increase Tuesday evening - this will likely form sensitive wind slabs in the alpine and at treeline. Once this happens, stay away from steep lee slopes and change your terrain use to lower angle and wind sheltered areas.

Confidence

Moderate

Avalanche Summary

Over the weekend, a neighboring area observed several size 1 windslabs from ski cuts and explosives.

Snowpack Summary

Up to 35 cm of unconsolidated snow at treeline and below with some wind effect in open areas. In the alpine, windslab 10-20 cm thick exists in lees. The lower snowpack is well settled with no significant weak layers.

Snowpack depths at treeline range from 80 - 120 cm.

Weather Summary

Tues

A mix of sun and cloud, wind west, 20-40 km/hr. Treeline high of -3°C, and low of -5°C.

Wed

Cloudy, wind west 40-70 km/hr. High of -2°C at treeline.

Thurs

Clearing. Wind easing to 10-30 km/hr from the northwest. Treeline high of -3°C.

Check out the Mountain Weather Forecast for the most up to date information.

Terrain and Travel Advice

  • Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.

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.