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Avalanche Forecast

Archived

Nov 24th, 2023–Nov 25th, 2023

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

Regions

Kootenay Boundary, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, South Okanagan, Ymir, Shuswap.

Continually assess the snowpack depth as you move through terrain, especially on wind effected  slopes. If the snow is deep enough to make for good riding than it is deep enough to avalanche.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the past few days. 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, the average depth at treeline is between 30 and 80 cm. Below treeline snowpack depths taper off quickly.

Surface conditions are variable. A sun crust can be found on some steep south and west facing slopes  and wind effect on exposed terrain at treeline and above.

Another crust with facets or depth hoar exists at or near the ground.

Weather Summary

Friday Night

Mostly clear with no new snow expected, northwest ridge wind 10 to 30 km/h, treeline temperatures falling to -8°C.

Saturday

Potential for valley fog in the morning followed by mostly sunny skies and no new snow expected, northwest ridge winds 10 to 20 km/h, treeline temperature -5°C.

Sunday

Mostly sunny skies with no new snow expected, northwest ridge winds 10 to 30 km/h, treeline temperature -6°C.

Monday

A mix of sun and cloud with no new snow expected, west ridge winds 10 to 30 km/h, treeline temperature -7°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for wind slab hazard before you commit to it.
  • Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.

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.