Bollettino valanghe

Chic-Choc Mountains

Mar 22 – 25, 2024Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 3 years ago

Pericolo valanghe

Sun
Mon
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
Apri la mappa completa

In sintesi

👉 ATTENTION - VALID FROM SATURDAY MARCH 23RD TO MONDAY MARCH 25th 👈

A nice break allows us to enjoy the snow in the mountains on Saturday, but with all this new snow, the danger rating is on the rise. With a little more snow on Saturday night, we recommend conservative itineraries for the weekend.

Problemi valanghivi

  • Wind Slabs

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

    Despite a few periods of calm, the north-westerly wind will continue to create wind slabs throughout the weekend. The addition of 8 to 12 cm of new snow on Sunday will create new, more sensitive wind slabs on the surface, which could be superimposed on slabs that have not yet fully stabilized. Be particularly careful near couloir start zones, under convexities and in laterally loaded areas of the alpine and treeline.

  • Storm Slabs

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

    Following the storm, the snow will take a little longer to stabilize. We can expect a bigger problem on slopes downwind from the northwest. This problem will diminish over the weekend.

Confidence

Moderate

Avalanche Summary

Several size 1 and 1.5 slab avalanche deposits were observed at the beginning of the storm on Thursday at the Madeleine mines, in the bouleaux and couloir en S sectors. https://avalanche.ca/map?panel=mountain-information-network-submissions/34748818-e7e1-11ee-97c1-0a58a9feac02

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

Snowpack Summary

During the storm, the strong to extreme southeasterly wind, then easterly, finally ending in a moderate northwesterly, greatly redistributed the snow, particularly in the alpine and at the treeline.

Mid-mountain, in areas sheltered from the wind, we found 30 to 40 cm of low-density snow resting on a crumbly crust a few centimetres thick. Under this crust, a further twenty centimetres of snow covered the very firm crust of March 10.

The middle of the snowpack is very well consolidated down to the ground. The average snow depth is around 130-140 cm.

Weather Summary

Synopsis: A short break before the snow returns on Saturday night to end the weekend in style.

Friday evening and night: Mostly cloudy. West wind 20 to 40 km/h. Low -18.

Saturday: Alternating sun and clouds. Wind northwest, 10 to 20 km/h. High -11.

Saturday evening and night: Snow, 8 to 12 cm total on Sunday morning. Light south-westerly wind veering north-westerly. Low -12.

Sunday: Clearing. Wind 30 to 50 km/h from the northwest. High -12.

Monday: Sunny. Light northwest wind. High -7. Freezing level at 350 m.

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

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be careful to keep storm day fever from luring you out into bigger terrain features.
  • Wind slabs are most reactive during their formation.
  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • Seek out wind sheltered terrain below treeline where you can avoid wind slabs and find great riding.

Regioni coperte