Bulletin d’avalanche

Chic-Choc Mountains

Feb 20 – 21, 2024Avalanche Canada
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Archivé · expiré 3 years ago

Danger d’avalanche

Thu
Fri
Alpin
1 · Faible
Limite forestière
1 · Faible
Sous la limite
1 · Faible

Points saillants

Even though the danger level is low, there is still a problem with windslabs.

The windslab problem is found in few places, due to the low level of general snow cover and the size of the skiable areas allowed.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    The moderate north-westerly winds of the past 24 hours have favoured the transport of snow to leeward slopes. Although small, the windslabs rest on facets, making them more sensitive to triggering. You're likely to encounter this problem in couloir start zones, under convexities and in cross-loaded depressions.

Confidence

Moderate

Avalanche Summary

No new avalanches reported or observed.

If you go into the backcountry, thanks for sharing your observations on the Mountain Information Network (MIN).

Snowpack Summary

In the alpine and in wind-affected areas, on eastern and southern slopes, there is a succession of windslabs resting on facets.

A rain/solar crust, which formed on February 11, is present on steep solar slopes and below 500m altitude. The crust is covered by 5 to 15 cm of light snow.

The middle of the snowpack is well consolidated, resting on the December 30 combo of facets and crust. Facets and depth hoar are developing at the base of the snowpack.

Weather Summary

Synopsis: Milder weather returns on Wednesday. Mild temperatures, sunshine and light winds, that's what the week has in store for us

Tuesday evening and night: Clear. Wind northwest, 30-40 km/h. Low -22.

Wednesday: Sunny. Wind southwest, 20 to 30 km/h. High -10.

Thursday: Alternating sun and clouds. Wind south, 10 to 20 km/h. High -5.

Friday: Intermittent snow. South wind, 10 to 20 km/h. High -3.

For more details, check out the most recent alpine weather forecast.

Terrain and Travel Advice

  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • Wind slabs may be poorly bonded to the underlying crust.
  • Even a small avalanche can be harmful if it pushes you into an obstacle or a terrain trap.

Régions couvertes