Bollettino valanghe

Chic-Choc Mountains

Jan 31 – Feb 1, 2023Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 4 years ago

Pericolo valanghe

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

In sintesi

After a day without wind on tuesday (or almost ...), there is still snow available for transport in the mountains. Beware of the new wind slabs, they are more sensitive during their formation.

Don't forget to share your observations on the MIN! https://www.avalanche.ca/fr/mountain-information-network

Problemi valanghivi

  • Wind Slabs

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

    The northwest, then southwest wind will blow the low density snow available for transport, continuing the formation of wind slabs on the leeward slopes and cross-loaded features. The underlying old wind slabs are showing signs of stabilization. However, they may be resting on top of the January 18 ice crust, on which facetted grains are developing, which could be a good favourable slide plane for avalanches. Be careful where the snowpack is thinner on this crust.

Confidence

High

Avalanche Summary

No new avalanches were observed or reported

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

The light density snow that fell over the last few days will be carried by northwest winds to settle on the leeward aspects. It will be added to the 20 to 50 cm of slightly denser snow on the January 18 crust. This snow, which is very pleasant to ski, is found in areas protected from the wind, particularly below the treeline and on the edges of trees at the treeline.A great deal of spatial variability is found in the alpine and treeline, from soft surface slabs, to wind-affected snow, to crust or rock.Facetted grains are developing on the January 18 crust, but no avalanche activity has yet been observed in connection with this interface. Below the January 18 crust is 15-20 cm of snow, generally well packed, overlying facetted grains from the decomposition of the January 2 melt-freeze crust. This interface rests on a mixture of laminated crusts and facetted grains at the base of the snowpack.In general, the height of the snowpack varies from 60 to 80 cm in the valley to 100 to 140 cm in the mid-mountain.

Weather Summary

Forecast for the Chic-Chocs ridges and summits.

Synopsis: Cold weather continues before a small low pressure system moves in on ThursdayTuesday evening and night: Partly cloudy. Wind northwest, 30 to 50 km/h. Low -24. Wednesday: Alternating sun and clouds. Wind 30 to 40 km/h from the southwest. High -16. Thursday: Snow in the evening and night, 5 cm. Wind 30 to 40 km/h from the southwest. High -13. Friday: Sunny. Wind 50 to 70 km/h. High -30.

For more details, check the 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.

Regioni coperte