Bulletin d’avalanche

Jasper

Feb 22 – 23, 2024Avalanche Canada
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Archivé · expiré 3 years ago

Danger d’avalanche

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

With multiple days of positive temperatures the better riding quality may be limited to higher elevation, polar aspects.

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.

Avalanche Summary

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

Confidence

Moderate

Snowpack Summary

A dusting of new snow sits over a sun crust on solar aspects. The Feb 3rd crust is down 15-30cm and is 1-3cm thick in the alpine. On shaded aspects, the Feb 3rd crust exists up to 2500m and it is starting to break down. On solar aspects this crust extends up to 2800m and it is 15-20cm thick at lower elevations. The Persistent and Deep Persistent weak layers continue to produce whumphing and sudden fractures in tests.

Weather Summary

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

Thursday's Weather

Cloudy with sunny periods.

Alpine temperature: High -6 °C.

Ridge wind southwest: 10 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