Bollettino valanghe

Chic-Choc Mountains

Mar 29 – 30, 2023Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 4 years ago

Pericolo valanghe

Fri
Sat
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

With the light winds of the last few days, snow is still available for transport on the summits and alpine plateaus.

This could herald the return of our famous wind slabs as early as Thursday morning, even before the snow arrives on the Chic-Chocs.

So watch for signs of recent loading, especially near alpine peaks and ridges and in cross-loaded areas.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2

    With the near absence of wind over the past few days, there is still plenty of snow available for transport in the mountains. Increasing winds from the south and then northwest could begin to load and form wind slabs on the leeward slopes overnight Wednesday and during the day Thursday. Avalanche danger will increase throughout the day as precipitation arrives and winds increases. It will also depend on the amount of precipitation that actually falls...

Confidence

Moderate

Avalanche Summary

No new avalanche observations reported or observed.

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Snowpack Summary

By Thursday afternoon, a light snow will begin to add to the 10 to 15 cm of new snow received since Saturday. The wind, which has been rather calm for the past few days, will increase in strength with the arrival of the low pressure system and could start to move the snow in the alpine and expose the crust on the windward slopes. This crust, which supports the weight of a skier, is slightly more friable in the south and very firm in the north. At and below the treeline, in areas protected from the wind, the new snow rests on a refreezing crust, followed by 10 to 20 cm of slightly denser snow. The crust is much less noticeable on the polar slopes.The middle of the snowpack is well consolidated, and of increasing density, interspersed with several crusts of refreeze from the last few weeks.

Weather Summary

Forecast for the Chic-Chocs ridges and summits.

Synopsis: Arrival of a low pressure system from the Great Lakes on Thursday bringing snow and increased winds. Wednesday evening and night: Mostly cloudy. Wind 10 to 30 km/h from the south. Low -10. Thursday: Alternating sun and clouds, then cloudiness and snow in the afternoon and evening, 5 to 10 cm total. Wind 10 to 30 km/h from the south veering northwest 20 to 40 km/h in the afternoon. Max -1. Freezing level at 315m.Friday: Alternating sun and clouds. Wind west 10 to 20 km/h. High -3. Freezing level at 30m.Saturday: Snow. Wind southeast 30 to 50 km/h. Maximum -1. Freezing level at 400m.

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

Terrain and Travel Advice

  • Wind slabs are most reactive during their formation.
  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.

Regioni coperte