Bulletin d’avalanche

Northwest Inland

Apr 8 – 9, 2017Avalanche Canada
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Archivé · expiré 9 years ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Cornices remain the primary concern. Solar radiation is a common cornice trigger. Limit your exposure when it's cloudy and completely avoid cornices when it's sunny.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    New snow and wind on Saturday may create small wind slabs in lee features below alpine ridgetops.

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    Solar radiation is a common cornice trigger. Limit your exposure when it's cloudy and completely avoid cornices when it's sunny.

Confidence

High -

Weather Forecast

SUNDAY: Mix of sun and cloud isolated flurries. Light southerly ridgetop winds. Freezing level around 1500 m.MONDAY: Mostly sunny. Light easterly ridgetop winds. Freezing level around 1600 m.TUESDAY: Mix of sun and cloud with isolated flurries. Light southeasterly ridgetop winds. Freezing level around 1600 m.

Avalanche Summary

No new avalanches were reported on Friday in this region.

Snowpack Summary

5-10 cm of new snow on Saturday with light southerly winds may have created small wind slabs on lee features below alpine ridgetops. The new snow will likely be sitting on hard surfaces created by strong winds earlier in the week. Elevations below roughly 1300 m are experiencing a daily melt-freeze cycle and the snowpack is likely isothermal. The February crust and facet layer is 70-90 cm deep in the Houston Telkwas sled area and a deep persistent faceted weak layer is still lingering near the bottom of the snowpack in all areas.

Régions couvertes