Bulletin d’avalanche

Jasper

Dec 2 – 5, 2024Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Alpine ridgetops can have small wind slabs and other spots have been stripped of snow. There is good riding to be had in sheltered areas.

Problèmes avalancheux

  • Wind Slabs

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

    Expect windslabs at exposed ridgetop features particularly if winds increase next few days.

  • Deep Persistent Slabs

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

    The Oct 18 crust is found just above the ground with weak facets above and below it. There’s uncertainty around its distribution and triggerability. Activity has been observed to the south of JNP, but limited observations make it hard to predict when and where it may be a problem.

Confidence

Moderate

Avalanche Summary

Saturday's patrol to Beauty creek did not observe any natural activity but visibility was poor. Sunday's patrol to Bald hills did not observe any natural activity and visibility was good. The field team ski cut released a size 1 windslab at ridgetop.

Snowpack Summary

15 cm of low density snow in sheltered areas overlies a faceted midpack. The November 20th surface hoar layer was found down 60 cm in one pit in the alpine. At treeline there is a crust down 30 cm. The October crust is widespread and is found near the base of the snow pack and has facets above and below. Snow depth is roughly 70 cm at treeline and tapers rapidly below.

Weather Summary

Monday will bring sun, cloud, no new snow, -4 °C, light West winds, and 1600m freezing level. Expect for Tuesday clouds, sun, no new snow, -3 °C, light winds, and 1700m freezing level. Wednesday and Thursday are flurries, light winds, and warmer temperatures at -1 °C and 2200m freezing level.

Terrain and Travel Advice

  • Be careful as you transition into wind-affected terrain.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.

Régions couvertes