Bulletin d’avalanche

Jasper

Feb 23 – 24, 2024Avalanche Canada
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Archivé · expiré 3 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

Strong winds and snow are forecasted for tomorrow with accumulations up to 10-20cm by Sunday.

While this will improve riding conditions for the weekend, be weary of new wind slab development.

Problèmes avalancheux

  • Wind Slabs

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

    Wind slabs are starting to develop at ridgetop.

  • Persistent Slabs

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

    This weak layer is buried 20-40cm deep. Human triggering remains possible, particularly in shallow rocky start zones.

  • Deep Persistent Slabs

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

    The base of the snowpack is inherently weak and untrustworthy. Human and natural triggering of these basal facets remains possible.

Confidence

Moderate

Avalanche Summary

No new avalanche activity reported on the Icefields Parkway or Maligne Lake Road today.

Snowpack Summary

The multiple buried crusts within the upper snowpack are starting to lose strength in some areas. The Feb 3rd crust is down 15-30cm in wind protected areas. The Persistent and Deep Persistent weak layers continue to produce sudden fractures in tests.

Weather Summary

The Mountain Weather Forecast is available at Avalanche Canada https://avalanche.ca/weather/forecast

Friday's Weather Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: High -6 °C.

Ridge wind southwest: 25 km/h gusting to 70 km/h.

Terrain and Travel Advice

  • Avoid shallow snowpack areas, rock outcroppings and steep convex terrain where triggering is most likely.
  • Minimize exposure to overhead avalanche terrain, large avalanches may reach the end of runout zones.

Régions couvertes