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Avalanche Forecast

Archived

Feb 18th, 2025–Feb 19th, 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.

Verify conditions as you travel since the snowpack is highly variable.

Areas sheltered from the wind will be the place to find the best riding.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the past week, but uncertainty remains regarding the early December layer mentioned in the snowpack summary.

If you are traveling in the mountains consider posting to the MIN.

Snowpack Summary

Previous strong wind has created variable snow surfaces in exposed terrain on all aspects and elevations. Ongoing cold temperatures have softened the upper snowpack in sheltered terrain.

A weak layer of facets and a crust from early December is buried 60 to 100 cm deep. This layer exists on all aspects up to 1750 m.

At the highway elevation, the snow is 120 cm deep, and in the alpine exceeds 200 cm.

Weather Summary

Tuesday Night

Cloudy with flurries. 20 to 30 km/h southeast ridgetop wind. Treeline temperature - 8 °C.

Wednesday

Mostly cloudy with flurries. 30 to 40 km/h southwest ridgetop wind. Treeline temperature - 3 °C.

Thursday

Cloudy with up to 5 cm of snow. 20 to 50 km/h south ridgetop wind. Treeline temperature - 6 °C.

Friday

Mix of sun and cloud with up to 5 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature - 2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid shallow snowpack areas, rocky outcrops, and steep terrain where triggering is most likely.

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.