Bulletin d’avalanche

Jasper

Dec 13 – 14, 2019Parks Canada
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Archivé · expiré 7 years ago

Danger d’avalanche

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

Delicious skiing can be found where winds have not impacted the snow. Be vigilant for rocks just under the snow surface. JA

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3

    Wind slabs are present on lee slopes and cross-loaded features

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2

    Isolated to very specific sheltered locations at treeline.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2

    Specific to steep terrain. Ice climbers should pay particular attention to this as entrenched loose snow may have the volume to knock climbers off their stance. Solar input has the potential to trigger this problem.

Weather Forecast

Friday will be cloudy with sunny periods and isolated flurries, trace snowfall, high -9, West winds 10-20 km/h. A mix of sun and cloud. Saturday will be similar with colder temperatures.

For More details: Mountain Weather Forecast

Snowpack Summary

The top 30cm remains unconsolidated except where exposed to wind where soft slabs have been formed. The snow depth is variable at all elevations. There is a crust/facet layer distributed through the region in the mid-pack with mixed reactivity and a weak basal facet/depth hoar layer at the base of the pack.

Avalanche Summary

Field day to Parkers Ridge area on Wednesday noted several loose dry up to size 2 out of steep, rocky solar terrain triggered by solar input. The visibility was good and nothing else was observed. Field trip on Thursday noted no new naturals.

Confidence

The weather pattern is stable

Régions couvertes