Avalanche forecast

Kootenay Boundary

Dec 9 – 10, 2024Avalanche Canada
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Avalanche danger

Wed
Thu
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low

Highlights

Watch for signs of instability as you travel, storm snow may remain triggerable as it sits over a new rain crust.

Greatest reactivity is expected in wind affected terrain.

Avalanche problems

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2

    Storm snow will be most reactive in wind affected terrain. Watch for signs of instability, the crust below may provide a good sliding surface for avalanche activity.

Confidence

Moderate

Avalanche Summary

Reports from Saturday indicated sluffing of the new snow on the rain crust. With further snowfall on Saturday night, we expect avalanche activity to have increased and slabs likely remain reactive to human triggers.

Snowpack Summary

Up to 20 cm of new snow has fallen in the last 2 days. This sits over a hard rain crust in most areas (see below). Surface hoar may remain below the storm snow in areas that did not receive much rain early in the storm.

Below the new storm snow, the snowpack is well-settled, dense, and generally strong. Treeline snow depths range from 100 to 150 cm.

Weather Summary

Sunday Night

Mostly clear skies. 20 to 40 km/h northwest ridgetop wind. Treeline temperatures drop to -8 °C.

Monday

Sunny. 20 to 40 km/h northwest ridgetop wind. Treeline temperatures around -4 °C.

Tuesday

Sunny with increasing afternoon cloud. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -4 °C.

Wednesday

Partly cloudy. 30 to 40 km/h west ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Use small, low consequence slopes to test the bond of the new snow.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.

Regions covered