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Avalanche Forecast

Archived

Apr 12th, 2026–Apr 13th, 2026

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

South Coast, North Shore, Sasquatch, Sky Pilot, Tetrahedron, Coquihalla, Harrison-Fraser, Manning, Skagit.

Wind slabs are expected to develop as freezing levels drop and alpine snow accumulates.

Cornices remain a concern near ridge crests.

Confidence

Moderate

  • We are uncertain due to the timing, track, and intensity of the incoming weather system.

Avalanche Summary

No recent avalanches have been reported.

Observations are starting to taper off in many regions. If you get out into the backcountry, post a MIN!

Snowpack Summary

Cloud cover and light rain continue to limit crust recovery, keeping the snowpack weak and near isothermal as it gradually melts. About 30 cm of snow has been lost over the past week at mid elevations on the North Shore and at Coquihalla Summit. Light rain has likely reached even the highest north-facing slopes.

As freezing levels drop and precipitation transitions to snow, wind slabs will likely begin to form in alpine terrain.

Watch for isothermal snow—this can make travel difficult and increase the likelihood of wet loose avalanches.

Snowpack loss remains most pronounced below 1000 m and on solar aspects.

Weather Summary

Sunday Night

Cloudy. 2 to 5 mm of rain at treeline. 20 km/h west ridgetop wind. Treeline temperature 2 °C. Freezing level 2000 m.

Monday

Cloudy. 2 to 5 mm of precipitation as snow or rain at treeline. 30 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 1600 m.

Tuesday

Cloudy. 15 to 30 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1300 m.

Wednesday

Mix of sun and clouds. 10 to 15 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Cornices often break further back than expected; give them a wide berth when traveling on ridgetops.
  • Watch for signs of slab formation throughout the day.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.

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.