Bulletin d’avalanche

Jasper

Jan 8 – 9, 2012Parks Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

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

Warm temperatures, 1600m freezing level, snow at higher elevations with rain lower down is expected starting late Sunday leading into Monday. Anticipate a brief spike in natural activity especially if extensive rain occurs.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    Recent 45cm storm snow, now <30, has melded into the windslab. Trigger spots are shallow snowpack locations which could initiate a deeper release. Windslabs present lee features. Evaluate local wind effect as directions have been variable.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–4
    Explosives on Friday released some size 3's to ground. Midpack strength is bridging this layer but the potential exists for human triggering especially in shallow locations. Consequences would be severe. Natural activity has tapered off.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Monday

Régions couvertes