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Avalanche Forecast

Archived

Apr 21st, 2025–Apr 22nd, 2025

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Sea To Sky, South Coast Inland, Brandywine, Garibaldi, Homathko, Spearhead, Tantalus, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

Manage exposure to cornices and sun-exposed slopes.

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.

Problems

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.