Avalanche forecast

Sea To Sky

Feb 4 – 5, 2026Avalanche Canada
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Avalanche danger

Fri
Sat
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Large, overhanging and, fragile cornices are primed for triggering with high freezing levels and sunny skies.

Stay well back from the edge of ridges, and slopes threatened by cornices.

Avalanche problems

  • Wind Slabs

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

    Extreme wind speeds will continue to redistribute dry snow that may be found above 2000 m, building wind slabs in lee terrain features.

  • Cornices

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

    Cornices are large and overhanging and remain a concern while warm temperatures persist. Cornice growth may continue during forecasted extreme winds at upper elevations.

  • Loose Wet

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

    Elevated freezing levels coupled with sun is keeping the wet loose problem on the table. Keep an eye out for moist or wet surface snow and avoid steep, solar facing slopes during intense solar radiation.

Confidence

Moderate

  • We are uncertain due to variable freezing levels.

Avalanche Summary

On Tuesday, numerous size 1 to 1.5 wet loose avalanches were reported.

On Monday, several natural and human triggered cornice releases were reported.

Numerous human-triggered size 1 to 2 storm slab avalanches were reported on Monday.

Cornices will remain reactive with the continued elevated freezing levels.

Snowpack Summary

Snow and rain from fluctuating freezing levels has buried previously wind affected surfaces.

Above 1800 m roughly 40 cm of moist snow sits over a crust and facets at treeline and above. In open terrain windward features are scoured back to this crust, and a wind slab can be found in lee features.

The mid/lower snowpack is generally well settled and strong.

Cornices are reported to be large and looming. Be mindful of them overhead or when travelling on ridge tops.

Weather Summary

Tuesday Night
Partly cloudy. 10 mm of rain at treeline (highest amounts in the north of the region). 100 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2400 m.

Wednesday
Sunny. 90 km/h southwest ridgetop wind. Treeline temperature 4 °C. Freezing level 2700 m.

Thursday
Sunny. 60 km/h southwest ridgetop wind. Treeline temperature 4 °C. Freezing level 2800 m.

Friday
Sunny. 50 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2400 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.
  • Be careful as you transition into wind-affected terrain.

Regions covered