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Avalanche Forecast

Archived

Jan 21st, 2023–Jan 22nd, 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

Coquihalla, Harrison-Fraser, Manning, Skagit.

Wind sheltered terrain at higher elevations is likely hold the best riding conditions. Watch for changing conditions in the snow surface as you transition through aspects.

Confidence

Moderate

Avalanche Summary

There have been no reports of recent avalanche activity within the last 3 days.

Please continue to share any observations or photos on the Mountain Information Network.

Snowpack Summary

Wind affected snow can be found at higher elevations, with recent storm totals of 10-20 cm sitting over a crust below 2000 m.

The snowpack below is considered settled. Weaker layers exist but with thick crusts sitting above, triggering avalanches on these layers is unlikely.

Snowpack depths are roughly 150 cm cm at treeline and tapers rapidly below 1500 m.

Weather Summary

Saturday Night

Snowfall continues into the evening for the Fraser Canyon and Coquihalla, delivering up to 5 cm. Southwest winds ease. Freezing levels drop to 500 m.

Sunday

Partly cloudy with light to moderate northwest winds. Flurries continue for the Coquihalla. Freezing levels around 500 m. Alpine high of -4 °C.

Monday

Partly cloudy with moderate to strong westerly winds. Flurries continue for the Coquihalla. Freezing levels below 500 m. Alpine high of -5 °C.

Tuesday

Partly cloudy with moderate northwest winds. Flurries continue for the Coquihalla. Freezing levels below 500 m. Alpine high of -5 °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.
  • Carefully evaluate steep lines for wind slabs.
  • Make observations and assess conditions continually as you travel.

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.