Bollettino valanghe

Northwest Inland

Dec 24 – 25, 2021Avalanche Canada
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Archiviato · scaduto 5 years ago

Pericolo valanghe

Sun
Mon
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole

In sintesi

Continue to assess for wind slab before committing to a feature. rider triggerable wind slab can still be found near ridge crests and steep roll overs.

Problemi valanghivi

  • Wind Slabs

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

    Wind slab can be found on all aspects. Many west facing slopes are scoured but cross loaded features could be found.

Confidence

High -

Weather Forecast

vvvThursday night: Light north wind in the alpine with some light flurries. Low of -26 at 1600m.

Friday: light east winds in the alpine with no new snow expected. High of -24 at 1600m.

Saturday: moderate winds from the Northeast with no new snow expected. High of -28 at 1600m.

Sunday: sunny with no new snow expected. wind will be moderate to strong from the northeast. High of -29 at 1600m.

Avalanche Summary

One size 2 skier accidental was reported on Wednesday. This avalanche was a wind slab on a north aspect in the alpine with a slab thickness of 40cm. 

Snowpack Summary

Wind slab could be found on all aspects as the winds have varied over the last few days. Cold temps and dry air will likely facet out the snow surface and reduce reactivity of wind slab over the next couple days. The increased winds on Sunday could then redistribute surface facets into new wind slab.

The December 15 surface hoar layer is 10 to 20cm below the surface in sheltered treeline and below . It is likely not a problem yet.

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Snowpack depth at treeline typically ranges from 120-220 cm, with higher values in the western part of the region and tapering to the east. 

Terrain and Travel

  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Carefully evaluate steep lines for wind slabs.
  • Avoid freshly wind loaded features, especially near ridge crests, roll-overs and in steep terrain.

Regioni coperte