Avalanche forecast

South Columbia

Feb 25 – 26, 2017Avalanche Canada
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Avalanche danger

Sun
Mon
Alpine
2 · Moderate
Treeline
1 · Low
Below
1 · Low

Highlights

Light flurries the next few days. Remember to use good travel habits and watch for isolated areas with unstable snow.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Watch for wind slabs in the immediate lee of ridges and crossloaded alpine terrain.

Avalanche Summary

Lots of people in the mountains the past few days have reported very little in terms of significant avalanche observations. Isolated size 1 wind slabs have been reported in alpine terrain and widespread sluffing has been reported in steep terrain. A few natural cornice falls in the size 2 range have been reported in the Selkirks. Small avalanches in the new snow remain the primary concern over the weekend.

Confidence

High -

Weather Forecast

SUNDAY: Flurries with 4-8 cm of new snow, light south winds, alpine temperatures around -12 C.MONDAY: Continued light flurries with another 4-8 cm of new snow, light southwest winds, alpine temperatures around -15 C.TUESDAY: Mix of sun and cloud, light west winds with moderate gusts, alpine temperatures around -15 C.

Snowpack Summary

Light flurries over the past few days have delivered 20-40 cm of low density snow. Expect to find isolated pockets with thicker wind deposits at higher elevations as well as sun crusts forming on steep south-facing slopes. The the mid-February interface is now buried 30-50 cm deep, and is composed of a thick rain crust up to about 1800 m, sun crusts on steep solar aspects, and spotty surface hoar on shaded aspects. Recent reports suggest the snow is bonding to this interface, although it has produced some sudden snowpack test results and reactive ski cuts. The mid and lower snowpack are generally well settled and stable in deeper snowpack areas, but may be weak and faceted in shallow start zones.

Regions covered