Bulletin d’avalanche

Jasper

Apr 7 – 8, 2012Parks Canada
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Archivé · expiré 14 years ago

Danger d’avalanche

Mon
Tue
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Points saillants

Clear skies, intense sun, and freezing levels 1600m+ for Sunday. despite the melt-freeze cycle, do not underestimate solar radiation destabilizing the snowpack. Cornices are huge and with sun, expect some to fall acting as large triggers above you.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    2–3
    Slabs are present on exposed slopes and steep gully sidewalls. A few significant natural wind slab releases were noted Friday one being fairly wide, 38degrees and 50cm deep off Mt Kitcheners ridge facing the Icefields center. Keep this on your radar.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    When the sun comes out expect a higher probability of naturally occurring moist avalanches especially in and around steep gullies, rocks, and alpine bowls. Recent activity of this nature have 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 today found the Feb14 surface hoar buried 80cm, unreactive yet present.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing or intensity of solar radiation is uncertain

Régions couvertes