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Avalanche Forecast

Archived

Apr 23rd, 2025–Apr 24th, 2025

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.

Wind slabs may form with strong southerly wind and new snow.

Confidence

Moderate

Avalanche Summary

We haven't received any recent reports for this region. We suspect that riders could trigger newly formed wind slabs in lee terrain features.

Please consider sharing your observations to the Mountain Information Network.

Snowpack Summary

Strong southerly wind and some new snow are likely forming new wind slabs in lee terrain features. Southerly slopes exposed to the wind are likely hard with a surface melt-freeze crust or wind-pressed snow.

There are no deeper layers of concern at this time. Thin snowpack areas may host various weak layers lower in the snowpack, which are likely dormant with the cool weather trend.

Weather Summary

Wednesday Night

Cloudy with 2 to 5 cm of snow. 30 to 60 km/h south ridgetop wind. Treeline temperature -2 °C. Freezing level 800 m.

Thursday

Cloudy with 5 to 10 cm of snow. 30 to 60 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1100 m.

Friday

Mostly cloudy with 2 to 5 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -1 °C. Freezing level 1000 m.

Saturday

Mostly cloudy with 1 to 3 cm of snow. 10 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1000 m.

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.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

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.