Bulletin d’avalanche

Jasper

Apr 30 – May 3, 2024Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Thu
Fri
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
Sans niveau

Points saillants

It may be spring down low but it is still winter-like conditions up high.

Recent snowfall has been variable due to the convective weather. Be aware of how well the new snow is bonding to old crusts. Watch for reverse loading from north winds.

Read the Avalanche Canada Forecasters Blog for resources on how to navigate the switch to spring

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2

    Recent snow and wind has formed isolated windslabs in lee areas at ridgetop in the alpine. The winds have been very variable so assess for loading in the not-so-normal locations.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–1.5

    Recent snowfall has been highly variable throughout the region. Be aware of the potential for loose avalanches in steep terrain where snow hasn't bonded well to old surfaces.

Confidence

Moderate

Avalanche Summary

No new natural avalanche activity reported on Monday. Nearest neighbours have been seeing dry loose & sluffing in the Alpine and wet loose at Treeline and below, all on steep terrain features. All size 1 or less.

Snowpack Summary

Sunday evening brought a good overnight refreeze all the way to valley bottom. Recent snowfall amounts vary with approx 10cm of new snow in the last few days. Recent snow has been redistributed by winds from all directions. A plethora of crusts extend up to at least 2600m, on all aspects, and to ridgetop on solar aspects.

Weather Summary

Mountain Weather Forecast is available at Avalanche Canada

Wednesday

Cloudy with scattered flurries.

Accumulation: 4 cm.

Alpine temperature: High -2 °C.

Ridge wind northeast: 15 km/h gusting to 50 km/h.

Freezing level: 2100m

Thursday

A mix of sun and cloud with isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -4 °C, High 0 °C.

Ridge wind northeast: 10-30 km/h.

Freezing level: 2400m

Terrain and Travel Advice

  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Wind slabs may be poorly bonded to the underlying crust.
  • Be carefull with sluffing in steep terrain, especially above cliffs and terrain traps.

Régions couvertes