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Archived

Avalanche Forecast

Nov 26th, 2024–Nov 27th, 2024
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Bonnington, Crawford, Grohman, Kokanee, Kootenay Boundary, Kootenay Pass, Norns, Rossland, Ymir.

Fresh and reactive wind slabs may form at treeline and above as westerly winds increase on Wednesday.

Start conservative and watch for signs of instability like cracking or whumpfing.

Confidence

Low

Avalanche Summary

No recent avalanche reports.

Fresh wind slabs could be sensitive to human triggering, especially on open slopes and terrain features near ridgelines.

If you head into the backcountry, consider submitting a MIN report.

Snowpack Summary

10 to 20 cm of new snow fell on Sunday and Monday. This brings storm snow accumulations around 40 to 70 cm over the past week.

Stiffer wind-affected snow may be found near ridgelines and on open slopes. The surface snow remains soft in wind protected areas, like the trees.

Below the surface, the upper snowpack is more consolidated and reports indicate it may sit on a layer of surface hoar buried 50-60 cm down.

The bottom of the snowpack has a crust from early November that is just above the ground.

Snowpack depth is 100 - 180 cm at treeline.

Weather Summary

Tuesday Night

Cloudy with clear periods. 10 to 30 km/h west ridgetop wind. Treeline temperature -7 °C. Freezing level valley bottom.

Wednesday

Mostly cloudy. 15 to 35 km/h northwest ridgetop wind. Treeline temperature -7 °C.

Thursday

Cloudy with isolated flurries. 10 to 20 km/h west ridgetop wind. Treeline temperature -8 °C. Freezing level 800 m.

Friday

Cloudy with isolated flurries. 15 to 50 km/h west ridgetop wind. Treeline temperature -10 °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.
  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.

Avalanche Problems

Wind Slabs

Fresh and reactive wind slabs could form on Wednesday. Especially at ridgeline and in exposed terrain features.

Expect sluffing or isolated storm slabs in wind protected areas, like the trees.

Aspects: North, North East, East, South East, South.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2