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Avalanche Forecast

Archived

Dec 24th, 2022–Dec 25th, 2022

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

New snow continues to accumulate but may not bond well to old surfaces.

Assess for slabs prior to committing to steep terrain.

Confidence

Moderate

Avalanche Summary

No avalanches were reported in the last 24 hours. New snow and wind have primed the conditions for rider-triggered avalanches. Warmer temperatures will further increase the hazard.

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

Snowpack Summary

Around 20 to 30 cm of new snow and southwest wind are likely forming wind slabs in lee terrain features at higher elevations. Soft snow prevails in sheltered terrain. This may not bond well to previous surfaces of sugary faceted grains and small surface hoar crystals.

The majority of the snowpack is faceted, with roughly 110 cm found at treeline and less below treeline.

Weather Summary

Saturday Night

Mostly cloudy, up to 10 cm accumulation, 40 km/h southwest wind, treeline temperatures -5 °C.

Sunday

Mostly cloudy with possible sunny periods, 2 to 5 cm accumulation, 15 to 20 km/h southwest wind, treeline temperatures -2 °C.

Monday

Mostly cloudy, 4 to 8 cm with the possibility of rain, 30 to 60 km/h southwest wind, treeline temperature -1 to 1 °C.

Tuesday

Cloudy, 10 cm accumulation, 25 to 35 km/h southwest wind, treeline temperatures -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Closely monitor how the new snow is bonding to the old surface.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.