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Avalanche Forecast

Archived

Apr 15th, 2025–Apr 16th, 2025

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

Regions

Chic-Choc Mountains.

The weather forecast from Tuesday evening to Wednesday remains uncertain, particularly regarding the amount of snow expected. The avalanche danger will directly depend on how much snow accumulates.

Take a cautious approach in the terrain and adjust your routes based on the conditions you encounter in the mountains.

Confidence

Low

Avalanche Summary

No new avalanche observed or reported.

If you are heading into the backcountry, please share your observations on the Mountain Information Network (MIN).

Snowpack Summary

Surfaces softened by Tuesday's sun will refreeze with the passage of the winter storm. The new snow is therefore expected to fall on crusted surfaces. The strong to extreme easterly winds accompanying the snowfall are likely to significantly affect snow distribution. The bonding of the new snow to the crust remains to be determined.

The mid-pack of the snowpack is composed of alternating well-settled snow and refrozen crusts. At mid-elevation, the snowpack depth ranges from 60 to 160 cm.

Weather Summary

WEATHER FOR THE PEAKS AND SUMMITS OF THE CHIC-CHOCS

An April storm will sweep over the Chic-Chocs from Tuesday night into Wednesday.

Tuesday evening and overnight: Snow, sometimes heavy, with 10 to 20 cm expected. East winds at 45 to 65 km/h. Low of -3 °C. Freezing level at 350 m.

Wednesday: Snow continuing. Additional accumulation of 5 to 10 cm. North winds at 10 to 20 km/h. High of -2 °C. Freezing level at 600 m.

Thursday: Cloudy, with snow ending in the morning. Northwest winds at 30 to 50 km/h. High of 0 °C. Freezing level at 450 m.

Friday: Clearing in the morning. Northwest winds at 20 to 30 km/h. High of +4 °C. Freezing level rising to 900 m by late afternoon.

For more details, read the Chic-Chocs alpine weather forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • As the storm slab problem worsens, the easy solution is to choose more conservative terrain.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.