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Avalanche Forecast

Archived

Feb 14th, 2025–Feb 15th, 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, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

Continuously assess for slab properties as you move through terrain

Avalanches are possible where surface snow is stiffer, especially in areas affected by wind or sun

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the past 4 days.

A notable skier-triggered slab avalanche was reported at Zupjok on Monday (see photo below and full report here). It occurred on a wind-loaded slope and failed on the persistent weak layer.

Snowpack Summary

A few cm of new snow is expected to accumulate throughout Saturday, covering a variety of surfaces. In sheltered terrain, it will land on facets and surface hoar, while on exposed slopes it will overlie wind-affected snow and a sun crust.

A weak layer from late January, buried 40 to 60 cm deep, is a hard crust in many areas but consists of facets or surface hoar on sheltered upper-elevation slopes. This layer has become reactive in snowpack tests.

A crust from December is buried 80 to 120 cm deep, with facets around it in shallow snowpack areas. Otherwise, the lower snowpack is strong and bonded.

Weather Summary

Friday Night

Mostly cloudy with 0 to 2 cm of snow. 10 to 30 km/h westerly ridgetop wind. Treeline temperature -9 °C.

Saturday

Cloudy with 1 to 2 cm of snow. 10 to 20 km/h westerly ridgetop wind. Treeline temperature -7 °C.

Sunday

Mostly cloudy with up to 5 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Monday

Clearing sky throughout the day. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The best and safest riding will be on slopes that have soft snow without any slab properties.
  • Be careful as you transition into wind-affected terrain.

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.

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.