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Avalanche Forecast

Archived

Dec 21st, 2022–Dec 22nd, 2022

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
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

South Okanagan, Shuswap, North Okanagan.

Assess for wind slabs in steep terrain prior to committing. Any injury or delay could lead to severe consequences during cold weather.

Confidence

Moderate

Avalanche Summary

Riders triggered a few small (size 1) avalanches at treeline and alpine elevations on Tuesday, likely failing within recent snow.

Please consider submitting a MIN report if you head into the backcountry.

Snowpack Summary

Around 10 cm of recent snow may drift into isolated pockets of wind slab with light, variable wind. Soft snow prevails in sheltered terrain. The snowpack is faceted, with roughly 100 cm found at treeline.

Weather Summary

Wednesday Night

Clear skies with no precipitation, 10 km/h northeast wind, treeline temperature -27 °C.

Thursday

Increasing clouds with no precipitation, 20 km/h southeast wind, treeline temperature -22 °C.

Friday

Cloudy with snowfall, accumulation 5 to 10 cm, 40 km/h southwest wind, treeline temperatures -15 °C.

Saturday

Cloudy with snowfall, accumulation 5 to 15 cm, 20 to 40 km/h southwest wind, treeline temperatures -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for wind slab hazard before you commit to it.

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.