Bulletin d’avalanche

Jasper

Avalanche Canada
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Danger d’avalanche

Thu
Fri
Alpin
Conditions printanières
Limite forestière
Conditions printanières
Sous la limite
Conditions printanières
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Périmé — ce bulletin a expiré 4 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Natural avalanche activity is expected to taper off with forecasted gradually cooling temperatures.

Be cautious in any steep terrain where the snow feels wet or punchy, or if it's facing into strong sun.

Problèmes avalancheux

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2.5

    Warm temperatures, direct sun, or rain will increase the size and likelihood of this avalanche problem.

Confidence

Avalanche Summary

Numerous natural avalanches were observed during the heat of the day on Tuesday in the icefields area. Loose Wet and Wet Slabs up to size 3 with most initiating in steep tree line and low alpine features. Some were failing in the mid-pack, and some were failing at ground depending on how isothermal the snowpack in that location.

Snowpack Summary

Melt-freeze crusts or wet snow exists on all aspects except North alpine, with many areas in some state of transition toward isothermal. The high alpine is still holding on to a winter snowpack on NW to NE aspects with the Jan 24th PWL down 80 to 120cm.

Weather Summary

Wednesday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: High 1 °C.

Ridge wind north: 15 km/h gusting to 40 km/h.

Freezing level: 2400 metres.

Thursday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -10 °C, High -8 °C.

Ridge wind north: 25 km/h gusting to 55 km/h.

Freezing level at valley bottom.

Friday

A mix of sun and cloud.

Precipitation: Nil.

Alpine temperature: Low -13 °C, High -7 °C.

Ridge wind north: 20 km/h gusting to 55 km/h.

Freezing level at valley bottom.

Terrain and Travel Advice

  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.

Régions couvertes