Bulletin d’avalanche

Jasper

Apr 8 – 9, 2012Parks Canada
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Archivé · expiré 14 years ago

Danger d’avalanche

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

Depending on the degree of overnight freeze, consider a.m. to be reduced hazard and increasing with daytime heating especially with sun. Cornice failures and one size 3 was noted today. Freezing level may spike to 3000m or higher on Tuesday.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–3
    Slabs are present on exposed slopes and steep gully sidewalls. A significant wind slab release was noted Friday off Mt Kitcheners ridge facing the Icefields center. It was 50cm deep, 38 degrees or less in places, and ran a fair distance.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    When the sun comes out expect a higher probability of naturally occurring moist avalanches in and around steep gullies, rocks, and alpine bowls. Recent activity of this nature has initiated deeper instabilities ie. windslabs / deep slabs.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–4
    These deeper layers can wake up unexpectedly. A size 3 was triggered last Sunday at the Icefields from a shallow spot. Investigate for this weakness before committing. Profile Saturday found Feb14 surface hoar buried 80cm, unreactive yet present.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing or intensity of solar radiation is uncertain on Monday

Régions couvertes