Avalanche forecast

Sea To Sky

Dec 4, 2017Avalanche Canada
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Archived · expired 9 years ago

Avalanche danger

Tue
Wed
Alpine
2 · Moderate
Treeline
1 · Low
Below
1 · Low
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Highlights

Don't let your guard down with the sunny weather and fresh snow. Take a cautious approach towards more aggressive terrain - especially steep, wind-affected terrain.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Wind slabs have been building over a crust layer in specific locations. This layer may slide easily, particularly on steep convex terrain or where the wind has blown it into more cohesive slabs.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

We're into a period of fine weather for the foreseeable future. Monday: Cloudy with sunny periods. Freezing levels around 700 m. Light northwesterly winds.Tuesday: Mainly sunny and becoming warm up high. Freezing levels rising to 1500 m. Light northerly winds.Wednesday: Sunny. Light northerly winds. Freezing levels 2000m. Alpine high temperatures to +1 Celsius.

Avalanche Summary

No new avalanches observed.

Snowpack Summary

Approximately 40-60 cm of snow from late last week now sits on top of a rain crust (or multiple crusts) that formed during the wet weather at the end of November. Strong (southerly) winds have blown snow around in exposed areas creating drifts and scoured areas. The main areas of concern are lee (northerly) and cross-loaded features in the alpine and tree line elevation bands. Snowpack depths are typically around 150 cm in sheltered tree line locations, although deeper (and shallower) spots certainly exist on account of the strong winds.

Regions covered