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Avalanche Forecast

Archived

Mar 6th, 2026–Mar 7th, 2026

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Below Threshold.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Below Threshold.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Below Threshold.

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West, Haines Pass, Chilkat Pass.

Reactive wind slabs are forming in areas affected by strong south winds.
Seek out wind-sheltered terrain for the safest riding conditions.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.
  • We are uncertain about how the timing or intensity of warming will affect the snowpack.

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

Variable winds have created hard surfaces, with wind loading and scouring on most aspects. Pockets of wind slab sit over older wind-pressed snow or facets.

Up to 70 cm of light density has been reported in wind sheltered treeline areas and is available for wind transport.

A mid-February crust or facet layer sits 50 to 70 cm deep, and is more prominent on north aspects in White pass and can found on all aspects in the Haines pass. The late January crust is buried 50 to 100 cm deep below 1350 m, with surface hoar above on sheltered north to east aspects.

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 generally shallower.

Weather Summary

Friday Night
Mostly cloudy. 4 to 15 cm of snow. 70 km/h southwest ridgetop wind. Treeline temperature -3 °C.

Saturday
Mostly cloudy. 3 to 5 cm of snow. 50 km/h south ridgetop wind. Treeline temperature -4 °C.

Sunday
Mostly cloudy. 5 to 10 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Monday
Mostly cloudy. 2 to 5 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -11 °C.



More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Strong wind is building wind slabs farther downslope than usual.
  • Approach lee and cross-loaded slopes with caution.
  • 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.

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.