Avalanche forecast

Sea To Sky

Apr 21 – 22, 2025Avalanche Canada
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Avalanche danger

Wed
Thu
Alpine
1 · Low
Treeline
1 · Low
Below
1 · Low
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Highlights

Manage exposure to cornices and sun-exposed slopes.

Avalanche problems

  • Cornices

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

    Large cornices hang over many ridges and are more likely to collapse during warm, sunny weather.

Confidence

High

Avalanche Summary

No significant avalanche activity has been reported since the last warm, sunny day on Friday (see below). Looking ahead, activity remains unlikely, though sunshine could still trigger cornice collapses or small wet loose avalanches.

Snowpack Summary

Dry snow may linger on high shady north slopes.

The snowpack is generally strong, with a typical spring diurnal pattern: daytime warming moistens the upper snowpack, then overnight cooling usually forms a hard crust at higher elevations. Lower elevations may not refreeze and are melting out quickly.

Dormant weak layers may still exist in isolated alpine terrain, but likely require a very heavy trigger, such as a cornice fall.

Weather Summary

Monday Night

Clear. 10 km/h northwest ridgetop wind. Treeline temperature -4 °C.

Tuesday

Mostly sunny. 10 km/h northwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1800 m.

Wednesday

Mostly sunny. 10 km/h northwest ridgetop wind. Treeline temperature +2 °C. Freezing level 2200 m.

Thursday

Sunny. 40 km/h southeast ridgetop wind. Treeline temperature +5 °C. Freezing level 2500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Limit exposure to steep, sun exposed slopes, especially when the solar radiation is strong.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Regions covered