Avalanche forecast

Sea To Sky

Apr 14 – 15, 2025Avalanche Canada
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Avalanche danger

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

Cornice falls may trigger large avalanches on slopes below.

Avoid traveling on slopes below cornices and give them a wide berth while traveling on ridetops.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–1.5

    Warm temperatures may increase the likelihood of triggering slabs, especially in steep, rocky, alpine terrain.

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1.5–2.5

    Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.

Confidence

Moderate

Avalanche Summary

On Sunday, several natural and human triggered cornice failures up to size 2 were reported. See MIN

Snowpack Summary

High freezing levels have formed a surface crust everywhere except possibly the highest north facing terrain.

The snowpack is generally well-settled and strong, although dormant weak layers may still exist in shallow inland areas like the Duffey and Chilcotin.

Sustained high freezing levels with poor overnight recovery have the potential to awaken dormant weak layers.

Lower elevations are melting out rapidly.

Weather Summary

Monday Night

Mostly clear. 5 to 10 km/h west ridgetop wind. Treeline temperature 3 °C. Freezing level 2500 m.

Tuesday

Sunny. 5 to 10 km/h west ridgetop wind. Treeline temperature 4 °C. Freezing level 2300 m.

Wednesday

Sunny. 10 to 20 km/h north ridgetop wind. Treeline temperature 0 °C. Freezing level 1900 m.

Thursday

Sunny. 5 to 10 km/h north ridgetop wind. Treeline temperature 5 °C. Freezing level 2400 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Cornice failures could trigger large and destructive avalanches.
  • Avoid travelling on slopes below cornices.
  • Cornices often break further back than expected; give them a wide berth when traveling on ridgetops.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

Regions covered