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Avalanche Forecast

Archived

Dec 13th, 2023–Dec 14th, 2023

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

Regions

Sasquatch, Sasquatch, Coquihalla, Harrison-Fraser, Manning, Skagit.

Heightened avalanche conditions exist on wind loaded features in the alpine. Avoid freshly loaded terrain features, especially around ridge crests, roll-overs and steep terrain.

Confidence

High

Avalanche Summary

No recent avalanches have been reported in the region.

If you do head into the backcountry please consider submitting observations and/or photos on the Mountain Information Network.

Snowpack Summary

5 to 10 cm buries a supportive crust that extends well into the alpine. The mid and lower snowpack is made up of a series of crusts and rounded grains. The snowpack is generally well consolidated.

Overall, the snow depth remains relatively shallow, creating challenging travel conditions and numerous hazards at or just below the snow surface across all elevations.

Weather Summary

Wednesday Night

Cloudy with no precipitation, southwest alpine winds 60 to 70 km/h, treeline temperature -2 °C, freezing level drops to 1000 m through the night.

Thursday

Cloudy with isolated scattered 5 to 10 mm accumulation, southwest alpine winds 50 to 60 km/h, treeline temperature -2 °C, freezing level 1000 m.

Friday

Mix of sun and cloud with no precipitation, southwest alpine winds 30 to 50 km/h, treeline temperature +1 °C, freezing level 2000 m.

Saturday

Mix of sun and cloud with no precipitation, west alpine winds 50 to 60 km/h, treeline temperature +4 °C, freezing level 3000 m.

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.
  • Wind slabs may be poorly bonded to the underlying crust.
  • Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.

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.