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Avalanche Forecast

Archived

Dec 19th, 2025–Dec 20th, 2025

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.

It's cold out there!

If you decide to get out, be aware that there are still old and hard wind slabs lurking around.

Confidence

High

  • Uncertainty is due to the limited number of field observations.

Avalanche Summary

One (size 2) natural wind slab avalanches was reported on Tuesday. It failed on a layer of facets. See more from the field team's MIN.

Observations are limited this time of year. Be sure to verify conditions as you go.

If you are getting out in the backcountry, consider sharing your observations on the Mountain Information Network (MIN)!

Snowpack Summary

The upper snowpack is mostly hard and sculpted by the wind at alpine elevations and deep into the treeline, with only the most sheltered areas holding soft snow.

Cold temperatures continue to facet the mid and lower snowpack.

An average snowpack depth of around 100 cm bu this varies significantly in areas affected by the wind.

Weather Summary

Friday Night
Clear skies. 30 km/h northeast ridgetop wind. Treeline temperature -31 °C.

Saturday
Mostly sunny. 30 km/h northeast ridgetop wind. Treeline temperature -32 °C.

Sunday
Mix of sun and clouds. 40 km/h northeast ridgetop wind. Treeline temperature -32 °C.

Monday
Mix of sun and clouds. 30 km/h northeast ridgetop wind. Treeline temperature -32 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Carefully evaluate steep lines for wind slabs.

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.