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Avalanche Forecast

Archived

Nov 29th, 2023–Nov 30th, 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

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

As the alpine snowpack gradually builds up, exercise caution on steep slopes, as cohesive wind and storm slabs may be primed for human-triggering.

Confidence

Low

Avalanche Summary

A small slab avalanche was triggered by skiers on Tuesday, just outside the forecast region, detailed in this report.

If you do head out, do so with a cautious and investigative mindset, and let us know what you're seeing by submitting a MIN report.

Snowpack Summary

The snowpack remains shallow at lower elevations with open creeks, esposed rocks, and plenty of early-season hazards.

However, reports suggest that much more snow has accumulated in alpine terrain during the recent warm stormy weather. A crust is buried anywhere from 0 to 50 cm depending on your location's wind exposure. A robust crust has been reported near the base of the snowpack.

Weather Summary

Wednesday Night

Mostly cloudy with no precipitation, south alpine winds 30 to 50km/h, treeline temperature -10 °C.

Thursday

Cloudy with up to 5 cm of snow, south alpine wind 20 to 40 km/h, treeline temperature -8 °C.

Friday

Cloudy with up to 5 cm of snow, south alpine wind 30 to 40 km/h, treeline temperature -12 °C.

Saturday

Cloudy with trace amounts of snow, south alpine wind 30 to 40 km/h, treeline temperature -12 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • Avalanche danger is often elevated in alpine gullies where snow has accumulated.
  • Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.

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.