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Avalanche Forecast

Archived

Mar 14th, 2022–Mar 15th, 2022

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

Regions

South Rockies.

Carefully assess the wind slab hazard before committing to a feature.

Confidence

Moderate - Uncertainty is due to the track & intensity of the incoming weather system.

Weather Forecast

Monday night: up to 10cm of new snow expected with moderate to strong southwest winds and freezing levels between 1400 and 1800 m.

Tuesday: a mix of sun and cloud with up to 10 cm of new snow at higher elevations. Moderate southwest winds and freezing levels rising to 2100m.

Wednesday: a mix of sun and cloud with the possibility of light flurries bringing trace amounts of snow. Light westerly winds and freezing levels around 1800 m.

Thursday: a mix of sun and cloud with no new snow expected. Light to moderate southwest winds and freezing levels rising to 2000 m.

Avalanche Summary

Over the past few days several natural wind slab avalanches up to size 2.5 have been observed in the region. In addition to the natural activity skier triggered wind slab avalanches up to size 2 have bee reported. Avalanche activity has generally been on north and east aspects and at treeline and above.

Snowpack Summary

Wind slab exists on north and east aspects in the treeline and alpine. Some south and west aspects in the alpine are scoured. A crust exists on or near the surface on solar aspects in the alpine and down up to 30cm below 2000m on all aspects.

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Seek out sheltered terrain where new snow hasn't been wind-affected.

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.