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Avalanche Forecast

Archived

Mar 10th, 2026–Mar 11th, 2026

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

Regions

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

Wind slabs remain possible to human-trigger.

Actively look for signs of instability and identify wind slabs, listen for drum like sounds and hollow sounding snow.

Confidence

Avalanche Summary

On Sunday, a large naturally triggered size 2 avalanche was reported in the Halcyon area.

Going forward, wind slabs remain possible to human trigger.

Snowpack Summary

Heavily wind affected surfaces in all open terrain features, and soft settling snow in sheltered terrain. Outflow winds forecast for Tuesday may build wind slabs at lower elevations. This MIN describes the surface conditions.

A mid-February crust or facet layer sits 50 to 70 cm deep, and the late January crust/surface hoar layer is buried 50 to 100 cm deep.

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

Tuesday Night
Partly cloudy. 1 cm of snow. 10 km/h east ridgetop wind. Treeline temperature -21 °C.

Wednesday
Mostly sunny. 10 km/h southeast ridgetop wind. Treeline temperature -23 °C.

Thursday
Mostly sunny. 20 km/h south ridgetop wind. Treeline temperature -23 °C.

Friday
Sunny. 10 km/h southeast ridgetop wind. Treeline temperature -23 °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.
  • Seek out wind sheltered terrain below treeline where you can avoid wind slabs and find great riding.
  • Watch for areas of hard wind slab on alpine features.
  • 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.