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Avalanche Forecast

Archived

Feb 28th, 2026–Mar 1st, 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.
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, Haines Pass, Chilkat Pass.

Wind slabs may exist on all aspects and elevations due to variable strong winds over the past few days.

Assess your lines for wind slab before committing.

Confidence

Moderate

  • We are uncertain due to the variability of wind effect on the snowpack.
  • We are uncertain due to a limited number of field observations.

Avalanche Summary

Recent reports have been limited to size 1 wind slabs.

Observations in this region are limited. Please post any photos or observations to the MIN if you head out.

Snowpack Summary

Up to 30 cm of recent storm snow has been variably distributed, with wind loading and scouring could be found on any aspect. This snow overlies old wind pressed snow and facets.

A mid-February crust or facet layer may be found 20–60 cm below the surface, and appears more prominent around Haines Pass.

The late January crust is buried 50–100 cm deep below 1350 m. Surface hoar may persist above this layer on sheltered north- to east-facing aspects. This layer is more pronounced on the inland areas of White Pass.

Facets or depth hoar exist at the base of the snowpack and may be a concern in the inland side of the region where the snowpack is shallower.

Weather Summary

Saturday Night
Partly cloudy. 1 cm of snow. 20 km/h northwest ridgetop wind. Treeline temperature -23 °C.

Sunday
Sunny. 20 km/h northwest ridgetop wind. Treeline temperature -27 °C.

Monday
Sunny. 10 km/h southeast ridgetop wind. Treeline temperature -26 °C.

Tuesday
Mix of sun and clouds. 1 cm of snow. 20 km/h southeast ridgetop wind. Treeline temperature -24 °C.

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.
  • Recent strong wind means wind slabs may be found farther downslope than expected.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.

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.