Bulletin d’avalanche

Northwest Inland

Apr 15 – 16, 2017Avalanche Canada
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Archivé · expiré 9 years ago

Danger d’avalanche

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

Expect the avalanche danger to increase as the sun comes out and  the temperature rises through the day.

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–3
    Solar radiation and daytime warming are common cornice triggers for cornices.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    The potential for prolonged periods of sunshine on Sunday will weaken surface snow especially on steep rocky solar aspects.

Confidence

Low - Due to the number of field observations

Weather Forecast

SUNDAY: Mix of sun and cloud / Light south wind / Alpine temperature -3 / Freezing level 1300mMONDAY: Mix of sun and cloud / Moderate east wind / Alpine temperature -1 / Freezing level 1500mTUESDAY: Scattered flurries / Light to moderate southeast wind / Alpine temperature -4 / Freezing level 1200m

Avalanche Summary

There have been no recent reports of avalanche activity. That being said there is little to no information being passed on from the region recently. Exposure to large overhanging cornices remains a significant concern. As the sun comes out over the weekend expect to see cornices weaken and loose snow avalanches run from steep sun exposed slopes during the warmest parts of the day.

Snowpack Summary

New snow falling last week has been redistributed by south and east wind at upper elevations. This is likely sitting on a hard wind crust in exposed alpine areas and sun crust on aspects facing the sun. Lower elevations are experiencing a melt-freeze cycle and the snowpack is likely moist or wet throughout its entire thickness. A deep persistent weak layer is still lingering near the bottom of the snowpack in all areas.

Régions couvertes