Bulletin d’avalanche

Northwest Inland

Mar 27 – 28, 2015Avalanche Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Sun
Mon
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Avalanche hazard will likely be on the rise as forecast storm snow begins to stack up.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Any fresh snow will likely be poorly bonded, with particularly deep and weak slabs on the leeward side of ridge crests and terrain features in exposed treeline and alpine terrain.

Confidence

Fair - Intensity of incoming weather systems is uncertain on Sunday

Weather Forecast

Saturday morning is expected to be unsettled with light flurries before another weakened system in the afternoon, with freezing levels remaining around 1200 m. Expect another 5-10 cm by Sunday morning falling under strong southwesterly winds, and additional light amounts on Sunday with freezing levels remaining around 1300 m. Another 5-10 cm is expected for Monday with moderate to strong southerly winds and freezing levels remaining around 1300 m.

Avalanche Summary

Reports from Thursday include continued natural wet loose avalanche activity up to Size 2 on steep rocky slopes.

Snowpack Summary

Another 10 cm of drier snow adds to the 10-25 cm of recent wet snow. Weaknesses buried in the upper snowpack may include hard crusts and/or facet crystals, although not much is known about the reactivity or spatial distribution of these layers. At the base of the snowpack, weak facets may be found. Cornices are large and potentially fragile. Unpredictable, full-depth glide avalanches are also a concern on low elevation slopes with smooth ground cover (grassy slopes, rock slabs, etc.) where large cracks have formed from the snowpack slipping on the ground.

Régions couvertes