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Avalanche Forecast

Archived

Nov 15th, 2023–Nov 16th, 2023

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

Brazeau, Cirrus-Wilson, Icefields.

Watch out for rocks and stumps just below the snowpack if out skiing. Watch out for small but high consequence avalanches if out ice climbing.

Confidence

Low

Avalanche Summary

Monday noted one size 1.5 windslab roadside Hilda ridge. Sunday's Icefield patrol noted several size 1.5-2 wind slabs. Several wind slab have been remote triggered around Lake Louise.

Please consider submitting a MIN report.

Snowpack Summary

The Icefields received 20-40cm over the weekend plus gusting winds created wind slabs. It overlies a thin and faceted early season snowpack base. Stability tests fail easy at the base.

Weather Summary

Thursday:

A mix of sun and cloud.

Alpine temperature: High -10 °C.

Ridge wind west: 20 km/h.

Friday

Cloudy with sunny periods.

Alpine temperature: Low -9 °C, High -2 °C.

Ridge wind southwest: 15 km/h.

Freezing level: 2000 metres.

Mountain Weather Forecast https://avalanche.ca/weather/forecast

Terrain and Travel Advice

  • Avoid freshly wind loaded terrain features.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

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.