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Avalanche Forecast

Archived

Dec 25th, 2022–Dec 26th, 2022

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

Regions

Cariboos, North Rockies, Clearwater, McBride, Quesnel, Sugarbowl, Kakwa, McGregor, Pine Pass, Renshaw, Robson, Tumbler.

A warming trend is likely to increase the reactivity of fresh storm slabs and wind slabs.

Be aware of 'step down' as avalanche activity may increase.

Confidence

Moderate

Avalanche Summary

Few to no avalanche reports throughout our region. It is expected that with the recent snow, increased winds, and warming temperatures, this will change and avalanche activity to increase with the hazard.

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

Snowpack Summary

Weekend snowfall amounts total of up to 65 cm. Expect to find fresh wind slabs in the alpine and at treeline from strong winds, initially from the southeast, then switching to the southwest. In more sheltered areas, the new snow will have formed a storm slab. Slab properties may increase with Monday's warming trend. New snow may not bond well to previous surfaces that include small surface hoar crystals, sugary faceted grains, and hard wind-packed snow.

The snowpack is still fairly thin and faceted, with roughly 130 cm at treeline.

Weather Summary

Sunday Night

Mostly cloudy, trace to 8 cm cm accumulation, 25 to 35 km/h southwest wind gusting to 65, freezing level to 1700 m.

Monday

Mostly cloudy, 5 to 15 cm accumulation with rain in some areas, 25 to 45 km/h southwest wind with gusts up to 70, freezing level getting up to 1700 m.

Tuesday

Mostly cloudy with a chance of sun, up to 12 cm accumulation in southern areas with less in the north, 25 km/h southeast wind, treeline temperatures -5 to -8 °C.

Wednesday

Mostly cloudy, 3 to 8 cm accumulation, 25 to 2- km/h southwest wind, treeline temperatures -7 °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.
  • Watch for changing conditions today, storm slabs may become increasingly reactive.
  • Storm slabs in motion may step down to deeply buried weak layers resulting in very large avalanches.
  • Be carefull around freshly wind loaded features.
  • Extra caution for areas experiencing rapidly warming temperatures for the first time.

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.