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Avalanche Forecast

Archived

Apr 25th, 2025–Apr 28th, 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.

Assess for wind slabs before entering high-consequence terrain. Watch for warming-related problems during the heat of the day.

This is the final daily avalanche forecast for the season.

Confidence

Moderate

Avalanche Summary

We haven't received any recent reports for this region. We suspect that riders could trigger small wind slabs in steep lee terrain features. Also use caution near cornices and on sun-exposed slopes during the heat of the day.

Please consider sharing your observations to the Mountain Information Network.

Snowpack Summary

Around 5 to 10 cm of soft dry snow may prevail on northerly alpine slopes. Wind slabs may linger in alpine lee terrain features. Southerly slopes 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

Friday Night

Mostly cloudy with 1 to 3 cm of snow. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -3 °C.

Saturday

Mostly sunny. 10 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1000 m.

Sunday

Mostly cloudy. 20 to 30 km/h southwest ridgetop wind. Treeline temperature +3 °C. Freezing level 1300 m.

Monday

Cloudy with 1 to 3 cm of alpine snow and light rain below. 20 to 40 km/h southwest ridgetop wind. Treeline temperature +2 °C. Freezing level 1200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • 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.
  • Avoid sun-exposed slopes, especially if the snow surface is moist or wet.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.