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Avalanche Forecast

Archived

Nov 26th, 2023–Nov 27th, 2023

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

North Columbia, South Columbia, Esplanade, Jordan, North Selkirk, West Purcell, Badshot-Battle, Central Selkirk, Goat, Gold, Kokanee, North Okanagan, Retallack, Valhalla, Whatshan.

It's early season conditions with a thinner than usual snowpack. Watch for hazards under the snow like rocks and stumps - and avoid freshly wind loaded slopes around ridgeline.

Confidence

Moderate

Avalanche Summary

On Friday loose dry 'sluffing' was observed in steep terrain.

A few natural size two wind slab avalanches have been reported in the last week at higher elevations.

Observations are limited this time of year, please consider filling out a MIN report.

Snowpack Summary

Expect early season conditions with a shallower than average snowpack, at treeline depths are between 60-100 cm. Below treeline snowpack depths taper off quickly.

Previous southwest winds have pressed the surface or formed small wind slabs in exposed terrain at treeline and above. A sun crust can be on the surface and 10 - 30 cm deep on some steep south and west facing slopes. A layer of small surface hoar exists at this depth in sheltered terrain.

A crust with facets below exists 10 to 20 cm above the ground.

Check out this MIN for a great overview of conditions near Revelstoke.

Weather Summary

Sunday Night

Mostly cloudy overnight with no snowfall expected. Westerly winds, 20-30 km/hr.

Monday

Skies gradually clear over the day. No snowfall expected. Westerly winds, 20-40 km/hr. Treeline temperatures reach -8 °C.

Tuesday

Clear skies with 20-30km/hr southwest winds. No snowfall. Treeline temperatures start cold, at around -12 and reach -6 °C by afternoon.

Wednesday

Mostly clear skies with 20-30km/hr northwest winds. No snowfall. Treeline temperatures around -9 °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.
  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.

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.