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Avalanche Forecast

Archived

Mar 28th, 2023–Mar 29th, 2023

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

Regions

Chic-Choc Mountains, Littoral, Murdochville.

Steady accumulations, light to calm winds and mild temperatures keep the rating low on Wednesday.

Keep in mind that this new snow is resting on a generalized crust that can surprise you both uphill and downhill.

Confidence

High

Avalanche Summary

No new avalanche observations reported or observed.

Thanks for contributing to the collection of this valuable data by sharing with other users on the Mountain Information Network or by writing to us directly at [email protected].

Snowpack Summary

Since Saturday, we have received between 10 and 15 cm of new snow. Although we have had a few episodes of moderate southerly winds, these seem to have had little effect on snow distribution and winds have been light since.In the alpine, this new snow rests directly on a crust that supports the weight of a skier, which is slightly more friable in the south. This new snow adheres relatively well to this crust. At the treeline and below, in areas protected from the wind, the new snow rests on a thin refreezing crust, followed by 10 to 20 cm of slightly denser snow that rests on the March 18 crust. The middle of the snowpack is well consolidated, and of increasing density, interspersed with several refreezing crusts from the last few weeks.

Weather Summary

Forecast for the Chic-Chocs ridges and summits.

Synopsis: Short ridge of high pressure on Wednesday and arrival of a light low pressure system on ThursdayTuesday evening and night: Partly cloudy, light snow. Wind northwest, 5 to 10 km/h. Low -6.Wednesday: Cloudy, light snow. Wind 5 to 10 km/h from the northwest. Max. -2. Freezing at 550 m.Thursday: Cloudy, chance of snow late in the day. Wind 10 to 30 km/h from the southeast. Max -1. Freezing level at 60 m.Friday: Alternating sun and clouds. Wind southwest, 10 to 20 km/h. High -0.5. Freezing level at 600 m.

For more details, see the Chic-Chocs alpine forecast.

Terrain and Travel Advice

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.

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.