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Avalanche Forecast

Archived

Dec 19th, 2023–Dec 20th, 2023

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

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West.

Wind slabs are the main concern as southerly winds continue to promote wind slab formation.

Confidence

Moderate

Avalanche Summary

There is no recent avalanche activity to report.

If you do go into the backcountry, consider submitting a Mountain Information Network report.

Snowpack Summary

Storm snow from last week has been redistributed into alpine and treeline lee terrain by predominantly southerly wind. Below 1200 meter elevation, a thick crust is present approximately 50 cm above the ground. The middle and lower snowpack is reported to be well settled and bonded. Snow depth varies from 75-200 cm depending on the aspect,

Weather Summary

Tuesday Night

Partially cloudy with no precipitation, ridgetop wind southwest 20-40 km/h treeline temperature -12 °C. 

Wednesday

Increasing clouds with 2 to 6 cm of snow, ridgetop wind southwest 30 to 50 km/h, treeline temperature -8 °C. 

Thursday

Cloudy with 3 to 8 cm of snow, ridgetop wind southwest 25 to 45 km/h, treeline temperature -7 °C. 

Friday

Cloudy with snow flurries, ridgetop wind southwest 20-40 km/h, treeline temperature -8 °C. 

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Sheltered slopes at lower elevations will offer the best riding.

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.