Bulletin d’avalanche

Jasper

Jan 21 – 22, 2021
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Archivé · expiré 6 years ago

Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Good quality skiing can be found in sheltered below treeline areas that were not impacted by yesterday's strong winds.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1.5–2.5

    Previous strong winds have resulted in wind slab formation in open terrain at all elevations. Look for wind slabs in non typical places lower in lee start zones and be wary of cross loading.

  • Persistent Slabs

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

    Use caution around thin to thick areas. Keep an eye out for surface hoar in isolated sheltered locations below treeline.

Weather Forecast

A clearing and cooling trend is expected as a result of a high pressure system. Partly cloudy skies, light winds and no precipitation is forecasted.

Snowpack Summary

Strong to extreme winds have stripped snow from exposed terrain and fetch areas and resulted in wind slabs and wind affected snow in open terrain below treeline, at treeline and in the alpine. The midpack is supportive. Surface hoar is found down 40cm to 80cm in isolated sheltered locations.

Avalanche Summary

Numerous size 1 to size 2 wind slabs observed, mostly from west alpine aspects during previous 24h.

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Confidence

Due to the number and quality of field observations

Régions couvertes