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Avalanche Forecast

Archived

Feb 11th, 2025–Feb 12th, 2025

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

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

Wind slab is lingering in specific locations. Assess conditions as you travel, and seek out wind sheltered terrain.

Confidence

High

Avalanche Summary

An avalanche was reported around Zupjok on Monday, read the full report here

Whumpfing near Zoa peak was reported on Saturday where there was a slab (stiff snow) over the weak layer. Small skier triggered sluffs were also reported in steep terrain on Saturday.

Snowpack Summary

15 cm of new snow fell on Saturday. This snow is wind-redistributed by northeast winds in the alpine extending well into treeline.

40 to 60 cm deep is a weak layer that was buried at the end of January. In many areas, this layer consists of a hard crust. However, on sheltered, upper-elevation slopes, the new snow may be resting on faceted grains or surface hoar. This layer hasn't produced any recent avalanches, but may be a problem when it snows again.

A crust from December is buried 80 to 120 cm deep and may have facets around it in shallow areas. Otherwise, the lower snowpack is well consolidated.

Weather Summary

Tuesday Night

Clear. 25 to 35 km/h northeast ridgetop wind. Treeline temperature -16 °C.

Wednesday

Sunny. 10 to 20 km/h northeast veering to southwest ridgetop wind. Treeline temperatures -8 °C.

Thursday

A mix of sun and cloud. 20 to 40 km/h southeast ridgetop wind. Treeline temperatures -8 °C.

Friday

Mainly sunny. 10 to 20 km/h northwest ridgetop wind. Treeline temperatures -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make observations and continually assess conditions as you travel.
  • The best and safest riding will be on slopes that have soft snow without any slab properties.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.

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.