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Avalanche Forecast

Archived

Apr 1st, 2026–Apr 2nd, 2026

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.

Triggering an avalanche is most likely in shallow, rocky and wind-affected areas where the snowpack transitions from thick to thin.

Confidence

Moderate

  • We are uncertain about how quickly persistent slabs are gaining strength.

Avalanche Summary

Over the past few days there has been evidence of natural activity including;

  • large cornice falls,

  • wind slabs size 1-2 on a variety of aspects,

  • loose wet size 1-1.5 on south through west aspects.

On Saturday, a very large size 3 cornice-triggered slab that may have run on a persistent weak layer also occurred just outside the bulletin area.

Snowpack Summary

Previous strong wind has created hard, pressed surfaces, wind slab, and sustrugi in exposed terrain. That being said, we’ve received reports of good riding on faceted northeast facing slopes and sheltered terrain at lower elevations. A sun crust may exist on or near the surface on sun-exposed slopes.

The lower snowpack is faceted and generally weak, particularly in shallow areas.

Weather Summary

Wednesday Night
Mostly clear skies. 10 km/h east ridgetop wind. Treeline temperature -8 °C.

Thursday
Mix of sun and clouds. 10 km/h south ridgetop wind. Treeline temperature -9 °C.

Friday
Mostly cloudy. 1 cm of snow. 20 km/h southeast ridgetop wind. Treeline temperature -7 °C.

Saturday
Mix of sun and clouds. 2 to 5 cm of snow. 30 km/h south ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be aware of the potential for large avalanches due to buried weak layers.
  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.
  • Carefully evaluate steep lines for wind slabs.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.

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.